10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

☒	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2021
or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to

Commission file number: 0-09439

INTERNATIONAL BANCSHARES CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Texas (State or other Jurisdiction of Incorporation or Organization)	74-2157138 (I.R.S. Employer Identification No.)
1200 San Bernardo Avenue Laredo, Texas 78042 - 1359 (Address of Principal Executive Office and Zip Code)	(956) 722-7611 (Registrant’s telephone number, including area code)

Securities Registered Pursuant to Section 12(g) of the Act:

Title of each class:	Trading Symbol	Name of each exchange on which registered:
Common Stock, $1.00 par value	IBOC	NASDAQ

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ⌧  No ◻

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Act. Yes ◻  No ⌧

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ⌧  No ◻

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ⌧  No ◻

Indicate by check mark if the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “small reporting company,” and “emerging growth company,” in Rule 12b-2 of the Exchange Act.

Large Accelerated filer ⌧ Emerging Growth Company ☐ Accelerated filer ◻ Non-accelerated filer ◻
​ Smaller reporting company ☐ ​

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its

internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐  No ⌧

The aggregate market value of the voting stock held by non-affiliates of the Registrant as of June 30, 2021 was $2,721,106,000 based on the closing sales price per share of the Registrant’s common stock on such date as reported by NASDAQ.

As of February 18, 2022, there were 63,376,041 shares of the Registrant’s Common Stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the following documents are incorporated by reference into the designated parts of this Form 10-K: (a) Annual Report to security holders for the fiscal year ended December 31, 2021 (in Parts I and II) and (b) Proxy Statement relating to the Company’s 2022 Annual Meeting of Shareholders (in Part III).

CONTENTS

		Page
Part I
Item 1.	Business	3
Item 1A.	Risk Factors	22
Item 1B.	Unresolved Staff Comments	29
Item 2.	Properties	29
Item 3.	Legal Proceedings	30
Item 4.	Mine Safety Disclosures	30
Item 4A.	Executive Officers of the Registrant	30
Part II
Item 5.	Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	30
Item 6.	Selected Financial Data	30
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 7A.	Quantitative and Qualitative Disclosures about Market Risk	31
Item 8.	Financial Statements and Supplementary Data	31
Item 9.	Changes In and Disagreements with Accountants on Accounting and Financial Disclosure	31
Item 9A.	Controls and Procedures	31
Item 9B.	Other Information	33
Item 9C.	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	33
Part III
Item 10.	Directors, Executive Officers and Corporate Governance	33
Item 11.	Executive Compensation	33
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	33
Item 13.	Certain Relationships and Related Transactions, and Director Independence	33
Item 14.	Principal Accounting Fees and Services	33
Part IV
Item 15.	Exhibits, Financial Statement Schedules	34
Item 16.	Form 10-K Summary	35

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Part I

As used in this report, the words “Company,” “we,” “us,” and “our” refer to International Bancshares Corporation, a Texas corporation, its five wholly-owned subsidiary banks, and other subsidiaries. The information that follows may contain forward-looking statements, which are qualified as indicated under “Cautionary Notice Regarding Forward-Looking Statements” in Item 7 (Management’s Discussion and Analysis of Financial Condition and Results of Operations) of this report. Our website address is www.ibc.com.

Item 1.  Business

General

We are a registered multibank financial holding company providing a diversified range of commercial and retail banking services in our main banking and branch facilities located in north, south, central and southeast Texas and the State of Oklahoma. We were organized and we operate as a bank holding company within the meaning of the Bank Holding Company Act of 1956, (BHCA).  As a bank holding company, we may own one or more banks and may engage in activities closely related to banking.  In this regard, we are subject to supervision and regulation by the Board of Governors of the Federal Reserve System (FRB). In addition, all of our wholly-owned banking subsidiaries are members of and subject to regulation by the Federal Deposit Insurance Corporation (FDIC).  Our principal corporate offices are located in Laredo, Texas.

Our principal assets at December 31, 2021, consisted of all the outstanding capital stock of four Texas state banking associations and one Oklahoma state banking corporation as follows:

● International Bank of Commerce, located in Laredo, Texas (IBC);

● Commerce Bank, located in Laredo, Texas (Commerce Bank);

● International Bank of Commerce, located in Brownsville, Texas (IBC Brownsville);

● International Bank of Commerce, located in Zapata, Texas (IBC Zapata); and

● International Bank of Commerce, located in Oklahoma City, Oklahoma (IBC-Oklahoma).

These five subsidiary banks are collectively referred to in this report as our “Subsidiary Banks.”

Our philosophy focuses on customer service as represented by the motto, “We Do More.” Our Subsidiary Banks maintain a strong commitment to their local communities by, among other things, appointing selected community members to local advisory boards (local boards). These local advisory boards help to direct the operations of the branches, under the supervision of the Subsidiary Bank’s board of directors.  These local boards also assist in developing or modifying our products and services to meet local customer needs, as well as introducing prospective customers to our many products and services.

We also own five direct non-banking subsidiaries:

● IBC Trading Company, an export trading company which is currently inactive;

● IBC Charitable and Community Development Corporation, a Texas nonprofit corporation formed to conduct charitable and community development activities;

● IBC Capital Corporation, a company incorporated in the State of Delaware for the purpose of holding certain investments; and

● Premier Tierra Holdings, Inc., a liquidating subsidiary formed under the laws of the State of Texas.

● Diamond Beach Holdings, LLC, a merchant banking entity formed under the laws of the State of Texas.

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We also own a fifty percent interest in Gulfstar Group I and II, Ltd. and related entities, which are involved in investment banking activities, a controlling interest in four merchant banking entities, and a majority ownership in a real-estate development partnership.

Available Information

Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports, as well as our Proxy Statements, are available free of charge on or through our website, www.ibc.com.  We have also posted on the website a Code of Ethics that applies to our directors and executive officers, and charters for our Audit Committee, Risk Committee, Compensation Committee, and Nominating Committee.

Services, Human Capital, and Diversity and Inclusion

Our Subsidiary Banks have historically focused on providing commercial banking services to small and medium sized businesses located in their trade areas and select international banking services.  In recent years, however, the Subsidiary Banks have emphasized consumer and retail banking, including mortgage lending, as well as locating branches in retail locations and shopping malls.  Today, we have 170 facilities and 263 ATMs serving 76 communities in Texas and Oklahoma.

Through the Subsidiary Banks, we are engaged in the business of accepting checking and savings deposits and the making of commercial, real estate, personal, home improvement, automobile and other installment and term loans. Some Subsidiary Banks are very active in facilitating international trade along the United States border with Mexico and elsewhere. Our international banking business includes providing letters of credit, making commercial and industrial loans and providing foreign exchange services. Each Subsidiary Bank also offers other related services, such as credit cards, safety deposit boxes, collections, notary public, escrow services, drive up and walk up facilities and other customary banking services.

Each Subsidiary Bank makes available certain securities products through third party providers, as well as banking services during traditional and nontraditional banking hours through their ATM network and retail locations in shopping malls and other convenient places. Additionally, IBC also has introduced IBC Bank Online, an Internet banking product, in order to provide customers online access to banking information and services 24 hours a day, as well as, IBC Mobile Banking with access from mobile devices 24 hours a day.  No material portion of our business may be deemed seasonal.

As of December 31, 2021, we and our Subsidiary Banks employed approximately 2,101 persons full time and 160 persons part time. As of December 31, 2021, over 60% of our approximately 300-person officer management team have been with us for more than 15 years, and approximately 69% of those have been with us for more than 20 years.

Our mission is to develop a banking culture that builds genuine, personal relationships with our customers and the communities we serve. The most significant component of that mission is to attract, develop and maintain employees and officers of the highest quality, who are committed to their job, conduct themselves with the highest level of professionalism, devote themselves to their community, and relentlessly pursue perfection in their performance.

While senior management is certainly expected to lead by example, our objective is to instill our mission and cultural values throughout our entire organization. We are as dedicated to each other as “one team” moving in the same direction as we are to the communities we serve. We teach and train our employees to understand the reality of our customers’ everyday business, and to provide practical solutions based on significant experience, ingenuity, continuity, balance, integrity, intelligence, and very strong work ethic and technical skills, including significant bilingual capabilities. Our team approach allows us to nurture excellence in our staff in order to develop superior valuation skills so that each individual may better understand the risks and returns of transactions better than our competitors. We provide extensive training to our employees in an effort to ensure that our customers receive superior customer service. We seek to develop superior skills at the transaction level, using a bottom-up approach to management. The use of cluster groups, pods, roundtables, and team huddles are fundamental to our approach.

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We use compensation plans coupled with a complete evaluation program to reward and direct the development of our employees. Our compensation systems are reflective of the need to retain and develop a superior workforce, recognizing that unique and innovative programs need to be developed and maintained to retain highly qualified employees. We strive to provide pay, benefits, and services that help meet the varying needs of our employees. Compensation and benefits include market-competitive pay, retirement programs, broad-based bonuses, stock options, health and welfare benefits, financial counseling, paid time off, and family leave.

We are committed to attracting, hiring and retaining a diverse workforce that is representative of the communities in which we live and serve. As of December 31, 2021, over 72% of our workforce self-identified as Latino or Hispanic, and over 67% self-identified as women. We are committed to providing equal opportunity for applicants and employees in all of our employment practices, including but not limited to, hiring, promoting, transferring, and compensating without regard to sex, race, color, national origin, genetic information, citizenship status, age, religion, veteran, disability or any other characteristic protected by law. We also conduct training programs on equal employment opportunities, diversity and inclusion in the workplace, as well as training sessions that coach and develop talent in order to retain a diverse workforce. Our commitment to diversity and inclusion is further underscored by our efforts to reach out to minority and women’s organizations and to educational institutions that serve significant minority or women student populations. We also participate in events to attract minorities and women and recruit them for available employment opportunities. We consider it a significant accomplishment that almost 35% of our employees come from low- or moderate-income geographies and are able to succeed at providing high quality complex financial services to our customers.

We are also committed to maintaining a safe and healthy work environment, free from work-related injuries and illnesses and where every team member is treated with dignity and respect, without the fear of the threat of discrimination and harassment. As stated in our Board approved Code of Ethics and Business Conduct, we expect these same standards apply to all stakeholders, to our interactions with customers, vendors, shareholders, independent contractors and the communities we serve.

None of our employees are represented by any collective bargaining unit or are parties to a collective bargaining agreement. We believe that our relations with our employees are good.

Competition

We are one of the largest independent financial bank holding companies in the State of Texas.  Our primary market area is bordered on the east by the Galveston area, the northwest by Dallas, the southwest by Del Rio and to the southeast by Brownsville.  Our primary market area also includes the State of Oklahoma. We compete for deposits and loans with other commercial banks, savings and loan associations, and credit unions in our primary market area.  We have increased our market share in our primary market area in the past through strategic acquisitions.  

We also compete against non-bank entities, which serve as an alternative to traditional financial institutions. The percentage of bank related services being provided by non-bank entities has increased during the last several years.

We do a large amount of business for customers domiciled in Mexico, with an emphasis in Northern Mexico. Deposits from persons and entities domiciled in Mexico comprise a large and stable portion of the deposit base of the Subsidiary Banks. These deposits comprised approximately 25%, 27% and 29% of the Subsidiary Banks total deposits for the three years ended December 31, 2021, 2020 and 2019, respectively.

Under the Gramm Leach Bliley Financial Services Modernization Act of 1999 (GLBA), banks, securities firms and insurance companies may affiliate under an entity known as a financial holding company, which may then serve its customers’ varied financial needs through a single corporate structure. The GLBA has significantly changed the competitive environment in which we and our Subsidiary Banks conduct business. The financial services industry is also likely to become even more competitive as further technological advances enable more companies to provide financial services. These technological advances may reduce the necessity of depository institutions and other financial intermediaries in the transfer of funds between parties.

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Supervision and Regulation

Banking is a complex, highly regulated industry.  In addition to the generally applicable state and federal laws governing businesses and employers, we and our Subsidiary Banks are further extensively regulated by special federal and state laws governing financial institutions. These laws comprehensively regulate the operations of the Subsidiary Banks and include, among other matters:

● requirements to maintain reserves against deposits;

● restrictions on the nature and amount of loans that may be made and the interest that may be charged thereon;

● restrictions on the amounts, terms and conditions of loans to directors, officers, large shareholders and their affiliates;

● restrictions related to investments in activities other than banking; and

● minimum capital requirements.

Furthermore, Congress, state legislatures and applicable federal and state regulatory agencies are continually reviewing such statutes, regulations and policies.  Any change in such laws or policies applicable to us and our subsidiaries could have a material adverse effect on our business, financial condition or our results of operations.  Recent political developments, including the change in the United States’ administration, have increased uncertainty with respect to the implementation, scope and timing of regulatory reforms.  With few exceptions, state and federal banking laws have as their principal objective either the maintenance of the safety and soundness of the federal deposit insurance system or the protection of consumers, rather than the specific protection of our shareholders or creditors.

Further, our earnings are affected by the fiscal and monetary policies of the FRB, which regulates the national money supply in order to mitigate recessionary and inflationary pressures. These monetary policies significantly influence the overall growth of bank loans, investments and deposits, as well as, the interest rates charged on loans or paid on time and savings deposits. The nature of future monetary policies and the effect of such policies on our future earnings and business cannot be predicted.

The Dodd-Frank Act

On July 21, 2010, sweeping financial regulatory reform legislation entitled the “Dodd-Frank Wall Street Reform and Consumer Protection Act” (Dodd-Frank Act) was signed into law. The Dodd-Frank Act represents a significant overhaul of many aspects of the regulation of the financial services industry, addressing, among other things, systemic risk, capital adequacy, deposit insurance assessments, consumer financial protection, interchange fees, derivatives, lending limits, mortgage lending practices, registration of investment advisors and changes among the bank regulatory agencies.  These far-reaching changes across the financial regulatory landscape include provisions that, among other things, have or will:

● Centralize responsibility for consumer financial protection in a new agency named the Bureau of Consumer Financial Protection (CFPB);

● Restrict the preemption of state law by federal law;

● Apply the same leverage and risk-based capital requirements that apply to insured depository institutions to most bank holding companies;

● Require financial holding companies, to be well capitalized and well managed in order to acquire banks located outside their home state;

● Change the assessment base for federal deposit insurance from the amount of insured deposits to consolidated assets less tangible capital, eliminate the ceiling on the size of the Deposit Insurance Fund (DIF) and increase the floor of the size of the DIF;

● Impose comprehensive regulation of over the counter derivatives market, which would include certain provisions that would effectively prohibit insured depository institutions from conducting certain derivatives businesses in the institution itself;

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● Require publicly traded bank holding companies with at least $10 billion in assets to create a risk committee to be chaired by an independent director, with at least one member with risk management expertise.

● Require annual stress testing of certain financial institutions with consolidated assets greater than $10 billion, but, at this time, none of the Subsidiary Banks meets the $10 billion asset threshold required to conduct the bank stress tests;

● Implement corporate governance revisions, including an advisory shareholder vote on executive compensation and proxy access by shareholders;

● Make permanent the $250,000 limit for federal deposit insurance and increase the cash limit of Securities Investor Protection Corporation protection from $100,000 to $250,000;

● Repeal the federal prohibitions on the payment of interest on demand deposits;

● Amend the Electronic Fund Transfer Act to give the FRB authority to establish rules regarding interchange fees, which must be reasonable and proportional to the actual cost of a transaction to the issuer;

● Increase the authority of the FRB to examine us and our Subsidiary Banks;

● Permit interstate de novo branching without the need to acquire an existing bank;

● Require extensive new restrictions relating to residential mortgage transactions to increase compliance for financial institutions that originate mortgage loans;

● Establish a Whistleblower Incentives and Protection Program for public company employees;

● Require each agency to establish an Office of Minority and Women Inclusion and to develop diversity assessment standards for all the entities regulated by the agencies;

● Require the federal financial regulatory agencies to adopt rules that prohibit banks and their affiliates from engaging in short term proprietary trading and investing in and sponsoring certain unregistered investment companies; and

● Authorize the FRB to adopt enhanced supervision and prudential standards for bank holding companies with total consolidated assets of $250 billion (as modified by EGRRCPA) or more (often referred to as “systemically important financial institutions” or “SIFI”).  

Many provisions of the Dodd-Frank Act became effective upon enactment, while others were subject to further study, SEC rulemaking and discretion afforded to federal regulators.  Some provisions have only recently taken effect or will take effect in the future making it difficult to anticipate the overall financial impact on us, our customers or the financial industry in general. Provisions in the legislation that affect deposit insurance assessments, payment of interest on demand deposits and interchange fees are likely to increase the costs associated with deposits, as well as place limitations on certain revenues those deposits may generate. Provisions that require revisions to our capital requirements could require us to seek other sources of capital in the future.

FRB Approvals

As a registered bank holding company we are subject to supervision by, among others, the FRB. As such, we are required to file with the FRB annual reports and other information regarding our business operations and those of our Subsidiary Banks. We are also subject to periodic examination by the FRB. Under the BHCA, a bank holding company is prohibited from acquiring direct or indirect control of any company that is not a bank or bank holding company, and must engage only in the business of banking, managing, controlling banks and furnishing services to or performing services for its subsidiary banks, except where the FRB has determined the ownership to be so closely related to banking, managing or controlling banks as to be a proper incident thereto.

The BHCA and the Change in Bank Control Act of 1978 require that either FRB approval must be obtained or notice must be furnished to the FRB and not disapproved prior to any person or company acquiring “control” of a bank holding company, subject to exception for certain transactions. Control is conclusively presumed to exist if any person acquires 25% or more of the voting securities of a bank holding company; control is a rebuttable presumption between 10% and 25% ownership.  Ownership by affiliated persons, or persons acting in concert, is typically aggregated for these purposes.  The FRB recently revised its control rules under the BHCA by expanding the number of presumptions used to

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determine whether control exists or not.  Effective April 1, 2020, the FRB’s new rule amends Regulation Y, the implementing regulation for the BHCA, to provide additional transparency regarding control determinations by implementing a tiered framework establishing factors and thresholds that are indicative of control.  We do not anticipate that the rule will have a significant detrimental effect on us given that it is generally consistent with the FRB’s historical practices in making control determinations.

As a bank holding company, we are required to obtain approval prior to merging or consolidating with any other bank holding company, acquiring all or substantially all of the assets of any bank, or acquiring ownership or control of shares of a bank or bank holding company if, after the acquisition, we would directly or indirectly own or control 5% or more of the voting shares of such bank or bank holding company.  In approving acquisitions or the addition of activities, one of the issues the FRB considers is whether the acquisition or the additional activities can reasonably be expected to produce benefits to the public, such as greater convenience, increased competition, or gains in efficiency, that outweigh such possible adverse effects as undue concentration of resources, decreased or unfair competition, conflicts of interest or unsound banking practices.

The USA PATRIOT Act

Combating money laundering and terrorist financing is a major focus of financial institution regulatory policy. The Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (PATRIOT Act), substantially expanded the responsibilities of U.S. financial institutions with respect to countering money laundering and terrorist activities. The implementing regulations impose obligations on financial institutions to maintain appropriate policies, procedures and controls to detect, prevent and report money laundering and terrorist financing and to verify the identity of their customers. Also, the PATRIOT Act requires the bank regulatory agencies to consider the record of a bank or bank holding company in combating money laundering activities in their evaluation of bank and bank holding company merger or acquisition transactions. Anti-money laundering regulations are continually evolving, including new requirements effective May 11, 2018 requiring U.S. financial institutions to ascertain and document the beneficial owners of legal entity customers opening new accounts.

We have a program in place to monitor and enforce our policies on money laundering, corruption and bribery, as well as our policies on prohibiting the use of Company assets to finance or otherwise aid alleged terrorist groups. Failure of a financial institution to maintain and implement adequate programs to combat money laundering and terrorist financing, or to comply with all the relevant laws or regulations, could have serious legal and reputational consequences for the institution.

Nonresident Alien Deposits

In 2013, the IRS published a rule requiring U.S. banks to report on the interest they pay to nonresident alien individuals, and the IRS will share the information with tax authorities in other countries with whom the United States has an agreement regarding the exchange of tax information.

Foreign Account Tax Compliance Act

On July 1, 2014, the Foreign Account Tax Compliance Act (FATCA) became effective. Originally enacted in 2010, FATCA is aimed at curbing offshore tax evasion by foreign financial institutions by requiring such institutions to identify any U.S. account holders.  Moreover, FATCA requires U.S. withholding agents, including U.S. banks, to withhold a tax (30%) on U.S. sourced income payable to foreign financial institutions that do not agree to report certain information to the IRS regarding their U.S. accounts, as well as on payments to nonfinancial foreign entities that do not provide information on their U.S. account owners to withholding agents.

Office of Foreign Assets Control Regulation

The United States has imposed economic sanctions that affect transactions with designated foreign countries, nationals and others. The Office of Foreign Assets Control of the U.S. Department of the Treasury (OFAC) publishes lists of specially designated countries and enforces economic and trade sanctions based on U.S. foreign policy and national

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security goals against targeted foreign countries and regimes, terrorists, international narcotics traffickers, those engaged in activities related to the proliferation of weapons of mass destruction, and other threats to the national security, foreign policy or economy of the United States. The OFAC administered sanctions take many forms, including restrictions on trade or investment and the blocking of certain assets related to the designated foreign countries and nationals. Blocked assets, which may include bank deposits, cannot be paid out, withdrawn, set off or transferred in any manner without a license from OFAC. Failure to comply with the OFAC sanctions could have serious legal and reputational consequences.

Gramm Leach Bliley

The GLBA eliminates the barriers to affiliations among banks, securities firms, insurance companies and other financial service providers. The GLBA provides for a new type of financial holding company structure under which affiliations among these entities may occur. Under the GLBA, a financial holding company may engage in a broad list of financial activities and any non-financial activity that the FRB determines is complementary to a financial activity and poses no substantial risk to the safety and soundness of depository institutions or the financial system. In addition, the GLBA permitted certain non-banking financial and financially related activities to be conducted by financial subsidiaries of banks.

Under the GLBA, a bank holding company may become certified as a financial holding company by filing a declaration with the FRB, together with a certification that each of its subsidiary banks is well capitalized, is well managed, and has at least a satisfactory rating under the Community Reinvestment Act of 1977 (CRA). We elected and were approved by the FRB to become a financial holding company under the GLBA in 2000 and the election was made effective by the FRB as of March 13, 2000. During the second quarter of 2000, IBC established an insurance agency subsidiary and acquired two insurance agencies.

The investments that may be made under the GLBA are substantially broader in scope than the investment activities otherwise permissible for bank holding companies and are referred to as “merchant banking investments” in “portfolio companies.” The FRB and the Secretary of the Treasury have regulations governing the scope of permissible merchant banking investments.  Before making a merchant banking investment, a financial holding company must either be or have a registered securities firm or a qualified insurance affiliate. The merchant banking investments may be made by the financial holding company or any of its subsidiaries, other than a depository institution or a subsidiary of a depository institution. The regulations place restrictions on the ability of a financial holding company to become involved in the routine management or operation of any portfolio company. The regulation also generally limits the ownership period of merchant banking investments to no more than ten years.

The FRB, the Office of the Comptroller of the Currency (OCC), and the FDIC have rules governing the regulatory capital treatment of equity investments in non-financial companies held by banks, bank holding companies and financial holding companies. The rules apply a graduated capital charge on covered equity investments, which would increase as the proportion of such investments to Tier 1 capital increases.

On September 8, 2016, the FRB published a report to Congress in which it recommended the repeal of the merchant banking authority granted to financial holding companies under the GLBA.  Specifically, the FRB recommended that Congress repeal the statutory merchant banking authority and the grandfathering exemption for certain companies that became financial holding companies after 1999.  The FRB also noted in its report that it is considering regulatory measures that would limit what it termed “safety and soundness risks of merchant banking investments.”  Following this report, on September 30, 2016, the FRB published a Notice of Proposed Rulemaking (NPR) proposing to, among other things, amend the risk-based capital requirements to increase the requirements associated with a subset of merchant banking investments;  specifically, merchant banking investments in companies engaged in physical commodities activities.  The changes proposed in the NPR were significantly narrower than the FRB’s recommendations regarding merchant banking investments in its report to Congress.  To date, a final rule implementing the changes put forth in the NPR has not been issued and it is uncertain what action, if any, will be taken regarding the FRB’s report.

State Law Preemption

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At the beginning of 2004, the OCC issued final rules clarifying when federal law overrides state law for national banks and their operating subsidiaries and confirming that only the OCC has the right to examine and take enforcement action against those institutions. The Dodd-Frank Act, however, limits the applicability of the preemption doctrine so that state laws affecting national banks are preempted only in certain circumstances. In this regard, the OCC has concluded that the Dodd-Frank Act did not create a new, standalone preemption standard, but rather, existing OCC regulations are “preserved,” including federal preemption over state consumer protection laws. The OCC also clarified that a state attorney general or chief law enforcement officer may enforce any applicable law against a national bank (as opposed to a non-preempted state law), and to seek relief if, and as, authorized by that law.

Financial Privacy

In accordance with the GLBA, the federal banking regulators adopted rules that limit the ability of banks and other financial institutions to disclose nonpublic information about consumers to nonaffiliated third parties. Pursuant to these rules, financial institutions must provide disclosure of privacy policies to consumers and allow consumers to prevent disclosure of certain personal information to a nonaffiliated third party in some instances.

Additional regulations were adopted to implement the provisions of the Fair Access to Credit Transactions Act (FACTA), which requires certain disclosures and consents to share certain information among bank affiliates. These privacy provisions affect how customer information is transmitted through diversified financial companies and conveyed to outside vendors. These privacy provisions also have the effect of increasing the length of the waiting period, after privacy disclosures are provided to new customers, before information can be shared among different affiliated companies for the purpose of cross-selling products and services between those affiliated companies.  On December 4, 2015, the Fixing America’s Surface Transportation Act (FAST Act) was signed into law.  Part of the FAST Act amended the GLBA by providing financial institutions with an exception to the general requirement that those institutions deliver annual privacy notices.  

NASDAQ Listing Standards

Shares of our common stock are listed and trade on the NASDAQ Stock Market under the symbol “IBOC”. As such, we must comply with the quantitative and qualitative listing standards of the NASDAQ Stock Market. In addition to other matters, the listing standards address disclosure requirements and standards relating to board independence and other corporate governance matters.

Interstate Banking

The Riegle-Neal Interstate Banking and Branching Efficiency Act of 1994 (Interstate Banking Act), rewrote federal law governing the interstate expansion of banks in the United States. Under the Interstate Banking Act, adequately capitalized, well managed bank holding companies with FRB approval may acquire banks located in any state in the United States, provided that the target bank meets the minimum age established by the host state (maximum of five years in Texas). Under the Interstate Banking Act, an anti-concentration limit will bar interstate acquisitions that would give a bank holding company control of more than ten percent of all deposits nationwide or thirty percent of any one state’s deposits, or such higher or lower percentage established by the host state. The anti-concentration limit in each of Texas and Oklahoma has been set at twenty percent of all federally insured deposits in Texas and Oklahoma, respectively. The Dodd-Frank Act changes the requirements for interstate branching by permitting de novo interstate branching if, under the laws of the state where the new branch is to be established, a state bank chartered in that state would be permitted to establish a branch.

FRB Enforcement Powers

The FRB has certain divestiture and other powers over bank holding companies and non-banking subsidiaries where their actions would constitute a serious threat to the safety, soundness or stability of a subsidiary bank. These powers may be exercised through the issuance of cease and desist orders or other actions. In the event a Subsidiary Bank experiences either a significant loan loss or rapid growth of loans or deposits, we may be compelled by the FRB to invest

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additional capital in the Subsidiary Bank. Further, we would be required to guarantee performance of the capital restoration plan of any undercapitalized Subsidiary Bank.

The FRB is also empowered to assess civil money penalties against companies or individuals who violate the BHCA in amounts up to $1,000,000 per day, order termination of non-banking activities of non-banking subsidiaries and order termination of ownership and control of a non-banking subsidiary. Under certain circumstances the Texas Banking Commissioner may bring enforcement proceedings against a bank holding company in Texas.

Company Dividends

Our holding company is regarded as a legal entity separate and distinct from our Subsidiary Banks and is subject to regulatory policies and requirements relating to the payment of dividends, including requirements to maintain adequate capital above regulatory minimums. The ability of our holding company to pay dividends is largely dependent on the amount of cash derived from dividends declared by our Subsidiary Banks.  The payment of dividends by any bank or bank holding company is affected by the requirement to maintain adequate capital.  Under FRB policy, bank holding companies should pay cash dividends on common stock only out of income available over the past year and only if the prospective rate of earnings retention is consistent with the organization’s expected capital needs and financial condition.  The policy provides that bank holding companies should not maintain a level of cash dividends that undermines the bank holding company’s ability to serve as a source of strength to its banking subsidiaries.  The FRB has historically discouraged dividend payment ratios that are at the maximum allowable levels unless both asset quality and capital are very strong.

The ability of the Subsidiary Banks to pay dividends is also restricted under Texas and Oklahoma law.  A Texas bank generally may not pay a dividend reducing its capital and surplus without the prior approval of the Texas Banking Commissioner.  An Oklahoma bank generally may not pay a dividend reducing its capital and surplus without the prior approval of the Oklahoma Department of Banking.  The FDIC has the right to prohibit the payment of dividends by a bank where the payment is deemed to be an unsafe and unsound banking practice.

At December 31, 2021, there was an aggregate of approximately $1,066,000,000 available for the payment of dividends to our holding company by our Subsidiary Banks under the capital rules applicable as of December 31, 2021, assuming that each of such banks continues to be classified as “well-capitalized.”  Further, we could expend the entire $1,066,000,000 and continue to be classified as “well-capitalized” under the capital rules applicable as of December 31, 2021.

Source of Strength Doctrine

FRB policy has historically required bank holding companies to act as a source of financial and managerial strength to their subsidiary banks. The Dodd-Frank Act codified this policy as a statutory requirement. Under this requirement, we are expected to commit resources to support our Subsidiary Banks, including at times when we may not be in a financial position to provide such resources. Any capital loans by a bank holding company to any of its subsidiary banks are subordinate in right of payment to deposits and to certain other indebtedness of such subsidiary banks. In the event of a bank holding company’s bankruptcy, any commitment by the bank holding company to a federal bank regulatory agency to maintain the capital of a subsidiary bank will be assumed by the bankruptcy trustee and entitled to priority of payment. In addition to the foregoing requirements, the Dodd-Frank Act’s provisions authorize the FRB and other federal banking regulators to require a company that directly or indirectly controls a bank to submit reports that are designed both to assess the ability of such company to comply with its “source of strength” obligations and to enforce the company’s compliance with these obligations.  

The Dodd-Frank Act requires the federal banking agencies to jointly issue rules implementing the “source of strength” doctrine, but as of December 31, 2021, the FRB and other federal banking regulators have not yet issued such rules.  

Deposit Insurance

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All of the Subsidiary Banks are examined by the FDIC, which currently insures the deposits of each member bank up to applicable limits. The FDIC may terminate deposit insurance upon a finding that an institution has engaged in unsafe and unsound practices, is in an unsafe or uninsured condition to continue operations, or has violated any applicable law, regulation, rule or order of condition imposed by the FDIC.  

Deposits of each of the Subsidiary Banks are insured by the FDIC through the DIF to the extent provided by law. The FDIC uses a risk-based assessment system that imposes premiums based upon a matrix that takes into account a bank’s capital level and supervisory rating.

Our FDIC deposit insurance expense totaled $4,389,000, $1,870,000 and $1,416,000 in 2021, 2020 and 2019, respectively.

The FDIC proposed new requirements, which became effective in 2017, for insured depository institutions with at least 2 million deposit accounts to impose new recordkeeping standards and deposit insurance calculation requirements for these institutions.  The institutions also are required to ensure that their information technology (IT) systems are capable of calculating the amount of insured money for most depositors within 24 hours of a failure.

Capital Adequacy

Our holding company and our Subsidiary Banks are required to meet certain minimum regulatory capital guidelines.  The FRB has historically utilized a system based upon risk-based capital guidelines under a two-tier capital framework to evaluate the capital adequacy of bank holding companies.  Tier 1 capital generally consists of common stockholders’ equity, retained earnings, a limited amount of qualifying perpetual preferred stock, qualifying trust preferred securities and non-controlling interests in the equity accounts of consolidated subsidiaries, less goodwill and certain intangibles.  Tier 2 capital generally consists of certain hybrid capital instruments and perpetual debt, mandatory convertible debt securities and a limited amount of subordinated debt, qualifying preferred stock, loan loss allowance, and unrealized holding gains on certain equity securities.  

The federal authorities’ risk based capital guidelines utilize total capital to risk weighted assets and Tier 1 capital elements.  In this way, the guidelines make regulatory capital requirements more sensitive to differences in risk profiles among banking organizations, consider off balance sheet exposure in assessing capital adequacy and encourage the holding of liquid, low risk assets.  At least one half of the minimum total capital is required to be comprised of Core Capital or Tier 1 capital elements.  Our Tier 1 capital is comprised of common shareholders’ equity and permissible amounts related to the trust preferred securities. The deductible core deposit intangibles and goodwill booked in connection with all our financial institution acquisitions after February 1992 are deducted from the sum of core capital elements when determining our capital ratios.

In addition, the FRB has established minimum leverage ratio guidelines for bank holding companies.  These guidelines provide for a minimum leverage ratio of Tier 1 capital to adjusted average quarterly assets (“leverage ratio”) equal to three percent for bank holding companies that meet certain specified criteria, including having the highest regulatory rating.  All other bank holding companies will generally be required to maintain a leverage ratio of at least four to five percent.  Our leverage ratio at December 31, 2021 was 13.94%.  

The guidelines also provide that bank holding companies experiencing internal growth or making acquisitions will be expected to maintain strong capital positions substantially above the minimum supervisory levels without significant reliance on intangible assets.  Each of our Subsidiary Banks is subject to similar capital requirements adopted by the FDIC and had a leverage ratio in excess of five percent as of December 31, 2021.

The federal bank regulatory agencies have adopted regulations which mandate a five-tier scheme of capital requirements and corresponding supervisory actions to implement the prompt corrective action provisions of FDICIA. The regulations include requirements for the capital categories that will serve as benchmarks for mandatory supervisory actions. Under the regulations, the highest of the five categories would be a well- capitalized institution with a total risk-based capital ratio of 10%, a Tier 1 risk-based capital ratio of 6% and a Tier 1 leverage ratio of 5%. An institution would be prohibited from declaring any dividends, making any other capital distribution or paying a management fee if the capital

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ratios drop below the levels for an adequately capitalized institution, which are 8%, 4% and 4%, respectively. The corresponding provisions of the Federal Deposit Insurance Improvement Act (FDICIA) mandate corrective actions are taken if a bank is undercapitalized. Based on our capital ratios as of December 31, 2021, our holding company and each of the Subsidiary Banks were classified as “well-capitalized” under the applicable regulations.

The risk-based standards that apply to bank holding companies and banks incorporate market and interest rate risk components. Applicable banking institutions are required to adjust their risk-based capital ratio to reflect market risk. Under the market risk capital guidelines, capital is allocated to support the amount of market risk related to a financial institution’s ongoing trading activities. Financial institutions are allowed to issue qualifying unsecured subordinated debt (Tier 3 capital) to meet a part of their market risks. We do not have any Tier 3 capital and did not need Tier 3 capital to offset market risks. In 2010, the federal bank regulators issued a final risk-based capital rule related to new accounting standards that make substantive changes in how banking organizations account for more items, including securitized assets that previously had been taken off banks’ balance sheets. The Dodd-Frank Act directed the banking agencies to issue capital requirements for banking institutions that are countercyclical. These will require a higher level of capital to be maintained in times of economic expansion and a lower level of capital during times of economic contraction.

Basel III

In July 2013, the FRB and the FDIC published the Basel III Capital Rules establishing a new comprehensive capital framework for U.S. banking organizations.  The rules implemented the Basel Committee on Banking Supervision’s -- a college of central bankers and other financial regulators from the United States and other advanced economies -- December 2010 framework known as “Basel III” for strengthening international capital standards, as well as certain provisions of the Dodd-Frank Act.  Basel III requires bank holding companies and their subsidiary banks to maintain substantially more capital, with a greater emphasis on common equity.

The Basel III final capital framework, among other things, (i) introduces as a new capital measure “Common Equity Tier 1” (CET1), (ii) specifies that Tier 1 capital consists of CET1 and “Additional Tier 1 capital” instruments meeting specified requirements, (iii) defines CET1 narrowly by requiring that most adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iv) expands the scope of the adjustments as compared to existing regulations.

Basel III also provides for a “countercyclical capital buffer,” generally to be imposed when national regulators determine that excess aggregate credit growth becomes associated with a buildup of systemic risk. The capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of CET1 to risk weighted assets above the minimum, but below the conservation buffer, will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall and the institution’s “eligible retained income” (meaning, four quarter trailing income, net of distributions and tax effects not reflected in net income).

The Basel III capital rules include the new components of “Accumulated Other Comprehensive Income (Loss)” (AOCI) that factors into the calculation of CET1 all net unrealized gains (losses) on available for sale securities. The definition also establishes the expectation that the majority of Common Equity Tier 1 should be voting shares. Basel III creates a category referred to as “High Volatility CRE,” which has a risk weight of 150% and generally includes nonresidential real estate acquisition development or construction financing. Basel III requires the phase-out from Tier 1 capital of trust preferred securities and cumulative preferred stock over a ten-year time period.

Further, the Basel III capital rules establish calculations for risk-weighted assets using alternatives to credit ratings that would be based on either the weighted average of the underlying collateral or a formula based on subordination position and delinquencies or the use of a 1,250% risk rating, which would be the default rating if requisite standards of a comprehensive understanding and levels of the due diligence are not met. Securitized structures, such as private label mortgage backed securities, may be risk weighted based on a gross up approach considering underlying assets, otherwise they default to the 1,250% risk weight.

On the quality of capital side, the final Basel III capital rule emphasized Common Equity Tier 1 capital, the most loss absorbing form of capital, and implements strict eligibility criteria for regulatory capital instruments. The final rule

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also improved the methodology for calculating risk-weighted assets to enhance risk sensitivity. The banking agencies made a number of changes in the final rule, in particular, to address concerns about regulatory burden on community banks. For example, the final rule is significantly different from the proposal in terms of risk weighting for residential mortgages and the regulatory capital treatment of certain unrealized gains and losses on trust preferred securities for common banking organizations.

Our phase-in period for mandatory compliance with the final Basel III rule was January 1, 2015.  A key provision of the rules permitted us to make a one-time irrevocable election to determine how most items reported in AOCI will be handled for regulatory capital purposes. For institutions that opt out, most AOCI items will not be included in the calculation of Common Equity Tier 1 capital; institutions that do not opt out will have most AOCI items included in the calculation of Common Equity Tier 1 capital, which affects the institution’s legal lending limit calculation. If a top tier banking organization makes the AOCI opt out election, all consolidated banking subsidiary organizations under it must make the same election. We made the AOCI opt out election in 2015.

Since fully phased-in on January 1, 2019, the Basel III capital rules require the following minimum capital ratios:

● 4.5% CET1 to risk-weighted assets, plus a capital conservation buffer of at least 2.5% (resulting in a minimum ratio of CET1 to risk-weighted assets of at least 7.0%);

● 6.0% Tier 1 capital to risk-weighted assets, plus a capital conservation buffer (resulting in a Tier 1 capital to risk-weighted assets ratio of at least 8.5%);

● 8.0% Total capital (Tier 1 capital plus Tier 2 capital) to risk-weighted assets, plus the capital conservation buffer (resulting in a minimum total capital ratio of 10.5%); and

● 4.0% minimum leverage ratio, calculated as the ratio of Tier 1 capital to average assets.

Implementation of the deductions and other adjustments to CET1 began on January 1, 2015 and was phased-in over a four-year period (beginning at 40% on January 1, 2015 and an additional 20% per year thereafter). The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and was phased-in over a four-year period (increasing by that amount on each subsequent January 1), until it reached 2.5% on January 1, 2019.

The Basel III capital rules prescribe a standardized approach for risk weightings that expand the risk weighting categories from four categories (0%, 20%, 50% and 100%), to a much larger and more risk sensitive number of categories, depending on the nature of the assets, generally ranging from 0% for U.S. government and agency securities to 600% for certain equity exposures, resulting in higher risk weights for a variety of asset categories. Specific changes to the rules impacting our determination of risk-weighted assets include, among other things:

● Applying a 150% risk weight instead of a 100% risk weight for certain high volatility commercial real estate acquisition, development and construction loans;

● Assigning a 150% risk weight to exposures (other than residential mortgage exposures) that are 90 days past due;

● Providing for a 20% credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancellable (currently set at 0%);

● Providing for a risk weight, generally not less than 20% with certain exceptions, for securities lending transactions based on the risk weight category of the underlying collateral securing the transaction;

● Providing for a 100% risk weight for claims on securities firms; and

● Eliminating the current 50% cap on the risk weight for OTC derivatives.

In addition, the Basel III capital rules provide more advantageous risk weights for derivatives and repurchase-style transactions cleared through a qualifying central counterparty and increase the scope of eligible guarantors and eligible collateral for purposes of credit risk mitigation.

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On November 21, 2017, the OCC, the Federal Reserve and the FDIC finalized a proposed rule that extends the current treatment under the regulatory capital rules for certain regulatory capital deductions and risk weights and certain minority interest requirements, as they apply to banking organizations that are not subject to the advanced approaches capital rules.  Effective January 1, 2018, the rule also pauses the full transition to the Basel III treatment of mortgage servicing assets, certain deferred tax assets, investments in the capital of unconsolidated financial institutions and minority interests.  

On December 7, 2017, the Basel Committee on Banking Supervision unveiled the latest round of its regulatory capital framework, commonly called “Basel IV.”  The framework makes changes to the capital framework first introduced as “Basel III” in 2010.  The committee targeted 2022-2027 as the timeframe for implementation by regulators in individual countries, including the U.S. federal bank regulatory agencies (after notice and comment).

Basel III Prompt Corrective Action

The Federal Deposit Insurance Act, as amended (FDIA), requires the federal banking agencies to take “prompt corrective action” in respect of depository institutions that do not meet minimum capital requirements. The FDIA includes the following five capital tiers: (i) “well-capitalized;” (ii) “adequately capitalized;” (iii) “undercapitalized;” (iv) “significantly undercapitalized;” and (v) “critically undercapitalized.” A depository institution’s capital tier will depend upon how its capital levels compare with various relevant capital measures and certain other factors, as established by regulation. The relevant capital measures which reflect changes under the Basel III capital rules that became effective on January 1, 2015, are the total capital ratio, the CET1 capital ratio, the Tier 1 capital ratio and the leverage ratio.  A bank will be considered:

● “well-capitalized” if the institution has a total risk-based capital ratio of 10.0% or greater, a CET1 capital ratio of 6.5% or greater, a Tier 1 risk-based capital ratio of 8.0% or greater, and a leverage ratio of 5.0% or greater, and is not subject to any order or written directive by an such regulatory authority to meet and maintain a specific capital level for any capital measure;

● “adequately capitalized” if the institution has a total risk-based capital ratio of 8.0% or greater, a CET1 capital ratio of 4.5% or greater, a Tier 1 risk-based capital ratio of 6.0% or greater, and a leverage ratio of 4.0% or greater and is not “well capitalized”;

● “undercapitalized” if the institution has a total risk-based capital ratio that is less than 8.0%, a CET1 capital ratio less than 4.5%, a Tier 1 risk-based capital ratio of less than 6.0% or a leverage ratio of less than 4.0%;

● “significantly undercapitalized” if the institution has a total risk-based capital ratio of less than 6.0%, a CET1 capital ratio less than 3%, a Tier 1 risk-based capital ratio of less than 4.0% or a leverage ratio of less than 3.0%; and

● “critically undercapitalized” if the institution’s tangible equity is equal to or less than 2.0% of average quarterly tangible assets.

An institution may be downgraded to, or deemed to be in, a capital category that is lower than indicated by its capital ratios if it is determined to be in an unsafe or unsound condition or if it receives an unsatisfactory examination rating with respect to certain matters. A bank’s capital category is determined solely for the purpose of applying prompt corrective action regulations, and the capital category may not constitute an accurate representation of the bank’s overall financial condition or prospects for other purposes.

The FDIA generally prohibits a depository institution from making any capital distributions (including payment of a dividend) or paying any management fee to its parent holding company if the depository institution would thereafter be “undercapitalized.” “Undercapitalized” institutions are subject to growth limitations and are required to submit a capital restoration plan. The agencies may not accept such a plan without determining, among other things, that the plan is based on realistic assumptions and is likely to succeed in restoring the depository institution’s capital. In addition, for a capital restoration plan to be acceptable, the depository institution’s parent holding company must guarantee that the institution will comply with such capital restoration plan. The bank holding company must also provide appropriate assurances of performance. The aggregate liability of the parent holding company is limited to the lesser of (i) an amount equal to 5.0%

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of the depository institution’s total assets at the time it became undercapitalized, and (ii) the amount which is necessary (or would have been necessary) to bring the institution into compliance with all capital standards applicable with respect to such institution as of the time it fails to comply with the plan. If a depository institution fails to submit an acceptable plan, it is treated as if it is “significantly undercapitalized.”

The appropriate federal banking agency may, under certain circumstances, reclassify a well-capitalized insured depository institution as adequately capitalized. The FDIA provides that an institution may be reclassified if the appropriate federal banking agency determines (after notice and opportunity for hearing) that the institution is in an unsafe or unsound condition or deems the institution to be engaging in an unsafe or unsound practice.

As of December 31, 2021, each of our Subsidiary Banks are “well-capitalized” based on the aforementioned ratios pursuant to the Basel III capital rules.

Liquidity Requirements

Historically, regulation and monitoring of bank and bank holding company liquidity has been addressed as a supervisory matter, without required formulaic measures. The Basel III final framework requires banks and bank holding companies to measure their liquidity against specific liquidity tests that, although similar in some respects to liquidity measures historically applied by banks and regulators for management and supervisory purposes, going forward will be required by regulation.

The Basel III liquidity coverage ratio was published in 2013 and uses international liquidity standards that serve to reconcile the differences of the liquidity standards of countries. The Basel Committee is expected to address the net stable funding ratio in the future. These new standards are subject to further rulemaking and their terms may well change before implementation. The federal bank regulatory agencies also issued a proposed rule that would implement qualitative liquidity requirements, including a liquidity coverage ratio (LCR), consistent with liquidity standards adopted by the Basel Committee, for certain banking organizations with more than $250 billion in total assets or subsidiary depository institutions of internationally active banking organizations with $10 billion or more in total consolidated assets. The FRB issued a separate proposed rule at the same time to apply a modified version of the LCR to certain depository institution holding companies with assets greater than $50 billion. The final version of the rule defines banks with between $50 billion and $250 billion in assets as “modified LCR companies,” which will be subjected to less rigorous requirements regarding the high-quality liquid assets calculations.

In July 2018, following the enactment of the Economic Growth, Regulatory Relief and Consumer Protection Act of 2018 (“EGRRCPA”), the Federal Reserve Board stated that it would no longer require bank holding companies with less than $100 billion in total consolidated assets to comply with the modified version of the LCR.  In October 2018, the federal banking regulators further proposed to revise their liquidity requirements so that banking organizations that are not globally systemic important banks and have less than $250 billion in total consolidated assets and less than $75 billion in each of off-balance sheet exposures, nonbank assets, cross-jurisdictional activity and short-term wholesale funding would not be subject to any LCR or net stable funding ratio requirements.

FASB CECL Accounting Standard

In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” (CECL).  The update amended existing standards for accounting for credit losses for financial assets.  The update required that the expected credit losses on the financial instruments held as of the end of the period being reported be measured based on historical experience, current conditions, and reasonable and supportable forecasts.  The update also expanded the required disclosures related to significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s financial assets.  The update also amended the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration.  The impact of the adoption of the update’s standard was to be recorded as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance was adopted.  The accounting standard was effective for us on January 1, 2020.  The task force we formed, which included key members of the teams that worked with the allowance for probable loan losses plus members representing the corporate

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accounting and risk management areas, worked with the implementation of the update and validation to complete our model/tool.  Based on the composition of the portfolio as of December 31, 2019 and after finalizing the methodology, the adoption of the update increased our allowance for probable loan losses (referred to as the allowance for credit losses under ASU 2016-13), by approximately 17.2%, resulting in a one-time cumulative-effect adjustment to retained earnings of approximately $8.3 million, net of tax, upon adoption.  In December 2018, the FRB and the other federal banking regulators issued a final rule that modified their regulatory capital rules and provided an option for banks to phase-in the increased reserves required pursuant to the adoption of CECL over a period of three years to mitigate the effects on their regulatory capital requirements.  We did not elect this phase-in option and instead immediately recognized the capital impact.    

State Enforcement Powers

The Banking Commissioners of Texas and Oklahoma may determine to close a Texas or Oklahoma state bank, respectively, when such Commissioner finds that the interests of depositors and creditors of a state bank are jeopardized through its insolvency or imminent insolvency and that it is in the best interest of such depositors and creditors that the bank be closed. The Texas Department of Banking and Oklahoma State Banking Department also have broad enforcement powers over the Subsidiary Banks, as applicable, including the power to impose orders, remove officers and directors, impose fines and appoint supervisors and conservators.

Depositor Preference

Because our holding company is a legal entity separate and distinct from our Subsidiary Banks, it’s our holding company’s right to participate in the distribution of assets of any subsidiary upon the subsidiary’s liquidation or reorganization will be subject to the prior claims of the subsidiary’s creditors. In the event of a liquidation or other resolution of a Subsidiary Bank, the claims of depositors and other general or subordinated creditors of the bank are entitled to a priority of payment over the claims of holders of any obligation of the institution to its shareholders, including any depository institution holding company or any shareholder or creditor.

Community Reinvestment Act

Under the CRA, the FDIC is required to assess the record of each Subsidiary Bank to determine if the bank meets the credit needs of its entire community, including low and moderate-income neighborhoods served by the institution, and to take that record into account in its evaluation of any application made by the bank for, among other things, approval of the acquisition or establishment of a branch or other deposit facility, an office relocation, a merger, or the acquisition of shares of capital stock of another financial institution. The FDIC prepares a written evaluation of an institution’s record of meeting the credit needs of its entire community and assigns a rating. Federal banking agencies make public a rating of a bank’s performance under the CRA. The Subsidiary Banks conduct an award winning financial literacy program in their communities as part of their community outreach.

Three of our Subsidiary Banks received an “Outstanding” CRA rating, and the rest received a “Satisfactory” CRA rating in their most recently completed examinations. Financial institutions are evaluated under different CRA examinations procedures based upon their asset size classification, which asset thresholds are updated annually and were updated as of January 1, 2022. “Large institution” now means a bank with total assets equal to or greater than  $1.384 billion for December 31 of both of the prior two calendar years, “small institution” means an institution with assets less than $1.384 billion as of December 31 of either of the prior two calendar years, and “intermediate small institution” means an institution with assets of at least $346 million as of December 31 of both of the prior two calendar years and less than $1.384 billion as of December 31 of either of the prior two calendar years. Three of our Subsidiary Banks are considered “intermediate small institutions” and IBC and IBC Oklahoma are considered “large institutions” under the new asset thresholds.  

Consumer Laws  

In addition to the laws and regulations discussed herein, the Subsidiary Banks are also subject to numerous consumer laws and regulations that are designed to protect consumers in transactions with banks. These laws and regulations mandate certain disclosure requirements and regulate the manner in which financial institutions must deal with

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customers when taking deposits or making loans to such customers. The Subsidiary Banks must comply with the applicable provisions of these consumer finance protection laws and regulations as part of their ongoing customer relations. The Dodd-Frank Act established comprehensive new rules regulating mortgage activities and created the CFPB with direct supervisory authority to enforce certain consumer finance protection laws over banks with assets of $10 billion or more and certain nonbank entities.  The CFPB will also have direct supervisory authority over the Subsidiary Banks under Section 1025 of the Dodd-Frank Act until the lead Subsidiary Bank reports assets of less than $10 billion for four consecutive quarters. The CFPB will take over from the FDIC as our primary regulator to oversee and enforce certain express consumer finance protection laws.

The CFPB’s broad authority to issue, interpret, and enforce almost all federal consumer protection laws, and its issuance of applicable disclosure forms, may impact each of the Subsidiary Banks’ consumer compliance programs. The applicable consumer financial protection laws include, in part, the Equal Credit Opportunity Act, the Fair Credit Reporting Act, the Fair Debt Collection Procedures Act, the Truth in Lending Act, the Home Mortgage Disclosure Act, the Real Estate Settlement Practices Act, various state law counterparts, and the Consumer Financial Protection Act of 2010, which is part of Dodd-Frank. The CFPB also has broad authority, among other matters, to declare acts or practices to be “unfair, deceptive, or abusive,” and to develop and require new consumer disclosures. The CFPB has issued and continues to issue numerous regulations under which IBC and the Subsidiary Banks will continue to incur additional expense in connection with ongoing compliance obligations. Significant recent CFPB developments that may affect operations and compliance costs include:

● positions taken by the CFPB on fair lending, including applying the disparate impact theory which could make it more difficult for lenders to charge different rates or to apply different terms to loans to different customers;

● the CFPB's final rule amending Regulation C, which implements the Home Mortgage Disclosure Act, requiring most lenders to report expanded information in order for the CFPB to more effectively monitor fair lending concerns and other information shortcomings identified by the CFPB;

● positions taken by the CFPB regarding the Electronic Fund Transfer Act and Regulation E, which require companies to obtain consumer authorizations before automatically debiting a consumer’s account for pre-authorized electronic funds transfers; and

● focused efforts on enforcing certain compliance obligations the CFPB deems a priority, such as automobile loan servicing, debt collection, mortgage origination and servicing, remittances, and fair lending, among others.

In light of the current political climate in Washington, DC and changes in CFPB leadership in recent years, we cannot predict what additional actions may be taken by the CFPB with respect to its previous regulations, rulings and decisions and any impact on our operations.

Military Lending Act

In 2015, the Department of Defense issued final amendments to the rule that implements the federal Military Lending Act.  Under the amended rule, the Department of Defense expanded the definition of “consumer credit” to include a much broader range of credit products, including some credit products offered by depository institutions.  The rule requires lenders to provide certain protections to borrowers who are covered under the rule.  For instance, lenders must cap the Military Annual Percentage Rule for covered credit products provided to covered borrowers at 36%.  Lenders must also provide certain disclosures and other protections to covered borrowers.  Although a lender can use any method to determine a borrower’s military status, the lender can obtain a safe harbor by verifying the borrower’s military status either through the Department of Defense Manpower Data Center or by using a consumer credit report that contains military status.

Electronic Banking and Cyber Security

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The Federal Financial Institutions Examination Council (FFIEC) issued guidance in 2005 entitled “Authentication in an Internet Banking Environment” (2005 Guidance), which provided a risk management framework for financial institutions offering Internet-based products and services to their customers. The 2005 Guidance required that institutions use effective methods to authenticate the identity of customers and that the techniques employed be commensurate with the risks associated with the products and services offered and the protection of sensitive customer information. The FDIC and other FFIEC agencies supplemented the 2005 Guidance by specifying the FDIC’s supervisory expectations regarding customer authentication, layered security, and other controls in an increasingly hostile online environment. The FDIC indicated that layered security controls should include processes to detect and respond to suspicious or anomalous activity and, for business accounts, administrative controls. In 2011, the Texas Banking Commissioner and the U.S. Secret Service formed the Bankers Electronic Crimes Task Force and issued guidance entitled “Best Practices: Reducing the Risks of Corporate Account Takeovers.” This guidance sets forth nineteen best practices to reduce the risk of corporate account takeover thefts. Our Subsidiary Banks are required to comply with these guidelines and best practices.

The National Institute of Standards and Technology (NIST) released a preliminary Framework for Approving Critical Infrastructure Cybersecurity in 2014. Our Subsidiary Banks are expected to incorporate the NIST Cybersecurity Framework into their security frameworks, which are also governed by FFIEC guidelines.  In 2016, the federal banking agencies proposed enhanced cyber risk management standards for large interconnected entities and their service providers.  The proposal establishes enhanced standards to increase the operational resilience of these entities and reduce the impact on the financial system in case of a cyber event experienced by one of these entities.  The standards address cyber risk governance, cyber risk management, internal dependency management, external dependency management, incident response, cyber resilience and situational awareness.  The enhanced standards would be implemented in a tiered manner, imposing more stringent standards on the systems of those entities that are critical to the functioning of the financial sector.  In 2021, the federal banking agencies adopted a rule governing computer security incidents and, in part, the rule requires notification by a regulated institution to its primary federal regulator in the event of certain cybersecurity-related incidents.

Increasingly, state regulators are implementing additional privacy and cybersecurity standards and regulations.  Recently, several states adopted regulations requiring certain financial institutions to implement cybersecurity programs and providing detailed requirements for such programs, including data encryption requirements.  Many states have also recently implemented or modified their data breach notification and data privacy requirements.  Effective January 1, 2020, Texas amended its data breach notification law, limiting the time frame for notifying individuals whose data has been compromised and requiring notice to the Texas Attorney General in certain circumstances.  We expect state-level activity to continue in this area and will monitor legislative developments in Texas and Oklahoma.

Affiliate Transactions

Our holding company and Subsidiary Banks are “affiliates” within the meaning of Section 23A of the Federal Reserve Act, which sets forth certain restrictions on (i) loans and extensions of credit between a bank subsidiary and affiliates, (ii) on investments in an affiliate’s stock or other securities, and (iii) on acceptance of such stock or other securities as collateral for loans. These restrictions prevent a bank holding company from borrowing from any of its bank subsidiaries, unless the loans are secured by specific obligations. Further, such secured loans and investments by a bank subsidiary are limited in amount, as to a bank holding company or any other affiliate, to 10% of such bank subsidiary’s capital and surplus and, as to the bank holding company and its affiliates, to an aggregate of 20% of such bank subsidiary’s capital and surplus. Certain restrictions do not apply to 80% or more owned sister banks of bank holding companies. Each Subsidiary Bank is wholly-owned by our holding company.

Section 23B of the Federal Reserve Act requires that the terms of affiliate transactions be comparable to terms of similar non-affiliate transactions. Among other things, the Dodd-Frank Act expands the limitations on affiliate transactions by expanding the definitions of “affiliate” and “covered transactions,” including debt obligations of an affiliate utilized as collateral.  The Dodd-Frank Act also requires that the 10% of capital limit on covered transactions begin to apply to non-bank financial subsidiaries. “Covered transactions” are defined to include a loan or extension of credit, as well as a purchase of securities issued by an affiliate, a purchase of assets (unless otherwise exempted by the FRB) from the affiliate, the acceptance of securities issued by the affiliate as collateral for a loan, and the issuance of a guarantee, acceptance or letter of credit on behalf of an affiliate. While the Dodd-Frank Act changes became effective in 2012, the FRB has not

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issued any guidance nor has it amended Regulation W.  Regulation W predates the Dodd-Frank Act and is expected to remain under any deregulation under the current administration.

Insider Loans

The restrictions on loans to directors, executive officers, principal shareholders and their related interests contained in the Federal Reserve Act and Regulation O apply to all insured institutions and their subsidiaries and holding companies. In general, any such extensions of credit must (i) not exceed certain dollar limitations, (ii) be made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with third parties, and (iii) not involve more than the normal risk of repayment or present other unfavorable features.  Additional restrictions are imposed on extensions of credit to executive officers.  Certain extensions of credit also require the approval of a bank’s board of directors. There is also an aggregate limitation on all loans to insiders and their related interests.  These loans cannot exceed the institution’s total unimpaired capital and surplus, and the FDIC may determine that a lesser amount is appropriate.  Insiders are subject to enforcement actions for knowingly accepting loans in violation of applicable restrictions.

Mortgage Lending

In 2016, the CFPB amended certain mortgage rules issued in 2013.  This final rule clarifies, revises, or amends provisions regarding force-placed insurance notices, policies and procedures, early intervention, and loss mitigation requirements under Regulation X’s servicing provisions; and prompt crediting and periodic statement requirements under Regulation Z’s servicing provisions.  The final rule also addresses compliance when a consumer is in bankruptcy and makes technical corrections to several other provisions.    

Also in October 2016, the CFPB also issued a final rule amending the mortgage servicing rules, most of which became effective on October 19, 2017, and the remainder of which became effective on April 19, 2018.  The CFPB issued this interpretive rule under the Fair Debt Collection Practices Act (FDCPA) to clarify the interaction of the FDCPA and mortgage servicing rules.  This interpretive rule constitutes an advisory opinion under FDCPA section 813(e) and provides a safe harbor from liability for actions done or omitted in good faith in conformity with the opinion.  The CFPB’s final rules also addresses insufficiency of hazard insurance which may lead to new requirements for lender-placed insurance, and early intervention with delinquent buyers will be governed by new contract obligations.  

On November 30, 2016, the CFPB, FRB, and OCC finalized amendments to the official interpretations that implement special appraisal requirements for “higher-risk mortgages” or “higher-priced mortgages.”  Under the interpretations when there is no annual percentage increase in the Consumer Price Index, the OCC, FRB and CFPB will not adjust the exemption threshold from the prior year.  

On July 7, 2017, the CFPB modified the TILA/RESPA Integrated Disclosure Rule implemented in Regulations X and Z. The amendments created tolerances for the total of payments and provided guidance on sharing the integrated disclosures with various parties involved in the mortgage origination process.  The TILA-RESPA Rule was amended again in 2018 to make amendments regarding when a creditor may use a Closing Disclosure to reset tolerances.

On October 4, 2017, the CFPB issued an interim final rule and a proposed rule to provide mortgage servicers more flexibility and certainty around requirements to communicate with certain borrowers under the CFPB’s 2016 mortgage servicing amendments. The interim final rule gives servicers more flexibility regarding when to communicate about foreclosure prevention options with borrowers who have requested a cease in communication under federal debt collection law. The interim final rule became effective on October 19, 2017, the same date that the related 2016 rule provisions become effective. The proposed rule was finalized and became effective on April 19, 2018. It imposes mortgage servicing requirements which are complex. All servicers must ensure they have comprehensive practices for responding to potential successors in interest and for confirming and communicating with them. Additionally, servicers need to determine which of the CFPB’s three options to adopt for communicating with confirmed successors in interest, in a manner that ensures clarity and does not indicate an obligation to repay a mortgage. The CFPB also removed the blanket exemption from the periodic statement requirement for borrowers in bankruptcy, making it necessary to provide modified

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periodic statements – which will require significant system configurations and testing to ensure the new requirements are met.

Powers

As a result of FDICIA, the authority of the FDIC over state-chartered banks was expanded. The FDICIA limits state chartered banks to only those principal activities permissible for national banks, except for other activities specifically approved by the FDIC. The Texas Banking Act includes a parity provision which establishes procedures for state banks to notify the Texas Banking Commissioner if the bank intends to conduct any activity permitted for a national bank that is otherwise denied to a state bank. The Texas Banking Commissioner has 30 days to prohibit the activity. Also, the Texas Finance Code includes a “super parity” provision with procedures for state banks to notify the Texas Banking Commissioner if the bank intends to conduct any activity permitted for any depository institution in the United States.   Texas Banking Commissioner has 30 days after receiving such notice to prohibit the activity.  Similarly, under the Oklahoma Banking Code, Oklahoma state banks have the authority to exercise such incidental powers as may be necessary or desirable to carry on the banking business including, but not limited to, powers conferred upon national banks, unless otherwise prohibited or limited by the Oklahoma Banking Commissioner or the Oklahoma State Banking Board.  Additionally, upon approval of the Oklahoma Banking Commissioner, and subject to all applicable federal and state laws, the operating subsidiaries or financial subsidiaries of an Oklahoma state bank may exercise any power and engage in any activity that is permitted for an operating subsidiary or financial subsidiary of a national bank, unless otherwise prohibited or limited by the Oklahoma Banking Commissioner or Oklahoma State Banking Board.  

Incentive Compensation

In June 2010, the FRB, OCC and FDIC issued the Interagency Guidance on Sound Incentive Compensation Policies, a comprehensive final guidance on incentive compensation policies intended to ensure that the incentive compensation policies of banking organizations do not undermine the safety and soundness of such organizations by encouraging excessive risk taking. The guidance, which covers all employees that have the ability to materially affect the risk profile of an organization, either individually or as part of a group, is based upon the key principles that a banking organization’s incentive compensation arrangements should (i) provide incentives that do not encourage risk-taking beyond the organization’s ability to effectively identify and manage risks, (ii) be compatible with effective internal controls and risk management, and (iii) be supported by strong corporate governance, including active and effective oversight by the organization’s board of directors.

The FRB will review, as part of the regular, risk focused examination process, the incentive compensation arrangements of banking organizations. These reviews will be tailored to each organization based on the scope and complexity of the organization’s activities and the prevalence of incentive compensation arrangements. The findings of the supervisory initiatives will be included in reports of examination. Deficiencies will be incorporated into the organization’s supervisory ratings, which can affect the organization’s ability to make acquisitions and take other actions. Enforcement actions may be taken against a banking organization if its incentive compensation arrangements, or related risk-management control or governance processes, pose a risk to the organization’s safety and soundness and the organization is not taking prompt and effective measures to correct the deficiencies.

The Dodd-Frank Act requires the federal banking agencies and the SEC to jointly prescribe regulations or guidelines that require financial institutions with $1 billion or more in assets to disclose to the appropriate federal regulator, the structure of all incentive-based compensation arrangements sufficient to determine whether the compensation structure provides an executive officer, employee, director, or principal shareholder with excessive compensation, fees, or benefits, or could lead to material financial loss to the financial institutions. On February 7, 2011, the FDIC issued a notice of proposed rulemaking that would prohibit bank incentive-based compensation arrangements that encourage inappropriate risk taking, are deemed excessive, or may lead to material losses. The proposal would apply to financial institutions with more than $1 billion in assets.  The rule also includes heightened standards for financial institutions with $50 billion or more in total consolidated assets that requires at least 50 percent of incentive based payments for designated executives to be deferred for a minimum of three years. The interagency rule must be approved by all of the five federal members of the FFIEC, the SEC and the Federal Housing Finance Agency before comments on the rule are sought. Comments on the proposed interagency rule were due to the agencies by May 31, 2011. A definitive final rule has not been issued.

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Regulation Z was amended in 2011 to restrict incentive compensation programs with regard to residential mortgage programs. Such limitations affect mortgage brokers as well as loan officers in the subsidiary banks. Compensation may be tied to volume, but not to terms or conditions of the transaction other than the amount of credit extended. Further amendments to Regulation Z relating to mortgage loan originator compensation were adopted on January 20, 2013, by the CFPB in accordance with the Dodd-Frank Act.

The scope and content of the U.S. banking regulators’ policies on executive compensation are continuing to develop and are likely to continue evolving. It cannot be determined at this time whether compliance with such policies will adversely affect our ability to hire, retain and motivate our key employees.

Legislative and Regulatory Initiatives

From time to time, various legislative and regulatory initiatives are introduced in Congress and state legislatures, as well as by regulatory agencies. Such initiatives may include proposals to expand or contract the powers of bank holding companies and depository institutions or proposals to substantially change the financial institution regulatory system. Such legislation could change banking statutes and our operating environment in substantial and unpredictable ways. Such changes could have a material effect on our business, including increasing our cost of doing business, affecting our compensation structure, or limiting or expanding permissible activities. We cannot predict whether any such changes will be adopted and we cannot determine the ultimate effect that potential legislation, if enacted, or implementing regulations with respect thereto, would have upon our financial condition or results of our operations. The same uncertainty exists with respect to regulations authorized or required under the Dodd-Frank Act, but that have not yet been proposed or finalized. There is also the possibility that the Dodd-Frank Act or other federal laws may be revised by Congress in the future because certain bills have been introduced into Congress from time to time that would amend certain provisions of the Dodd-Frank Act, or other federal legislation relating to financial institutions.  Similarly, it is possible that the legislatures of the State of Texas or the State of Oklahoma would amend applicable state laws relating to us or our Subsidiary Banks.  

Item 1A.  Risk Factors

Risk Factors

An investment in the Company’s common stock involves risks.  The following is a description of the material risks and uncertainties that the Company believes affect its business and an investment in its common stock.  If any of the risks described below were to occur, our financial condition, results of operations and cash flows could be materially and adversely affected.  If this were to happen, the value of the common stock could decline significantly and all or part of an investment could be lost.

Risks Related to Our Business

Our allowance for probable loan losses may be insufficient.

The determination of an appropriate level of loan loss allowance is an inherently difficult process and is based on numerous assumptions.  This allowance represents management’s best estimate of probable losses that may exist within our existing loan portfolio.  The determination of the appropriate level of the allowance for probable loan losses inherently involves a high degree of subjectivity and requires management to make significant estimates and assumptions regarding current credit risks and future trends, all of which may undergo material changes.  In addition, if future charge-offs exceed the allowance for probable loan losses, we may need to increase the allowance for probable loan losses.  Any increases in the allowance for probable loan losses will result in a decrease in net income and capital and may have a material adverse effect on our financial condition and results of operations.

The adoption of ASU 2016-13, as amended, on January 1, 2020 impacted our methodology for estimating the allowance for credit losses.  The update requires that the expected credit losses on the financial instruments held as of the end of the period being reported be measured based on historical experience, current conditions, and reasonable and supportable forecasts.  The update also expanded the required disclosures related to significant estimates and judgements

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used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s financial assets.  The update also amended the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration.  The adoption of the update increased our allowance for probable loan losses (referred to as the allowance for credit losses under ASU 2016-13), by approximately 17.2%, resulting in a one-time cumulative-effect adjustment to retained earnings of approximately $8.3 million, net of tax, upon adoption.  

If real estate values in our target markets decline, the loan portfolio would be impaired.

A significant portion of our loan portfolio consists of loans secured by real estate located in the markets we serve.  An adverse change in the economy affecting real estate values generally or in our target markets could significantly impair the value of collateral underlying certain of our loans and our ability to sell the collateral at a profit or at all upon foreclosure.  

We operate in a highly competitive industry and market area.

We face substantial competition from a variety of different competitors in our market areas, many of which are larger and may have more financial resources.  These competitors include national, regional and community banks within the various markets we serve.  We also face competition from many other types of financial institutions, including credit unions, finance companies, brokerage firms, insurance companies, factoring companies and other financial intermediaries.  Many of our competitors have fewer regulatory constraints and lower cost structures, which may allow them to offer better pricing on a broader range of products and services.  Also, technology and other changes are allowing parties to complete financial transactions that historically have involved banks through alternative methods.  The process of eliminating banks as intermediaries could result in the loss of fee income, as well as the loss of customer deposits and related income.  Technology and other changes have lowered barriers to entry and made it possible for non-banks to offer products and traditionally offered by banks.  In particular, the activity of financial technology companies (“fintechs”) has grown significantly over recent years and is expected to continue to grow.  Fintechs have and may continue to offer bank or bank-like products and a number of fintechs have applied to bank or industrial loan charters.  In addition, other fintechs have partnered with existing banks to allow them to offer deposit products to their customers.  The loss of revenue streams and the reduction of lower cost deposits as a source of funds could have a material adverse effect on our financial condition and results of operations.

External funding which we rely on, in part, to provide liquidity may not be available to us on favorable terms or at all.

Liquidity is the ability to meet cash flow needs on a timely basis at a reasonable cost. We rely on deposits, repurchase agreements, advances from the Federal Home Loan Bank (FHLB) of Dallas, the FHLB of Topeka and other borrowings to meet our liquidity demands. If we were unable to access any of these funding sources when needed, we might be unable to meet customers’ needs, which could adversely impact our financial condition, results of operations, cash flows and liquidity, and level of regulatory-qualifying capital. Our ability to borrow could also be impaired by factors that are not specific to us, such as a disruption in the financial markets or negative views and expectations about the prospects for the financial services industry.

Our earnings are subject to interest rate risk.

Interest rates are highly sensitive to many factors that are beyond our control, including general economic conditions and policies of various governmental and regulatory agencies and, in particular, the FRB.  Changes in monetary policy, interest rates, the yield curve, or market risk spreads, a prolonged inverted yield curve or instability in domestic or foreign financial markets could negatively influence the interest we receive on loans and securities, as well as the amount of interest we pay on deposits and borrowings.  If the interest rates paid on deposits and other borrowings increase at a faster rate than the interest rates received on loans and other investments, our net interest income, and therefore earnings, could be adversely affected.  Earnings could also be adversely affected if the interest rates received on loans and other investments fall more quickly than the interest rates paid on deposits and other borrowings.  Any substantial, unexpected or prolonged change in market interest rates could have a material adverse effect on our financial condition and results of operations.

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We may be adversely impacted by the transition from LIBOR as a reference rate

The United Kingdom’s Financial Conduct Authority announced that after 2021 it will no longer compel banks to submit the rates required to calculate the London Interbank Offered Rate (“LIBOR”).  This means that the continuation of LIBOR on the current basis cannot and will not be guaranteed after 2021, however, certain USD LIBOR rates will continue to be published until June 30, 2023.  Consequently, it is not currently possible to predict whether and to what extent banks will continue to provide submissions for the calculation of LIBOR.  It is equally impossible to predict whether LIBOR will continue to be an acceptable market benchmark, what alternative rate or rates may become acceptable, or what the effect of any such changes may be on the markets for LIBOR-indexed financial instruments.  

Specifically, regulators, industry groups and certain committees, like the Alternative Reference Rates Committee, have published recommended fallback language for LIBOR-linked financial instruments, identified recommended alternatives for certain LIBOR rates, such as the Secured Overnight Financing Rate as the recommended alternative to U.S. Dollar LIBOR, and proposed implementations of such alternatives in floating rate instruments.  Currently, it is not possible to predict whether these specific recommendations and proposals will be broadly accepted, whether they will continue to evolve, and what the effect of their implementation may be on the markets for floating-rate financial instruments.  

We have various loans, derivative contracts, borrowings and other financial instruments with attributes that are either directly or indirectly dependent on LIBOR.  The transition from LIBOR could create considerable costs and additional risk, even though our loan documents contain mitigating language around rates in the event LIBOR is phased out.  Since proposed alternative rates are calculated differently, payments under contracts referencing new rates will differ from those referencing LIBOR.  The transition will change our market risk profiles, requiring changes to risk and pricing models, valuation tools, product design and hedging strategies.  Furthermore, failure to adequately manage this transition process with our customers could adversely impact our reputation.  Although we are currently unable to assess what the ultimate impact of the transition from LIBOR will be, failure to adequately manage the transition could have a material adverse effect on our business, financial condition and results of operations.

We are subject to or may become subject to extensive government regulation and supervision.

Our operations are subject to extensive regulation by federal, state and local governmental authorities and are subject to various laws and judicial and administrative decisions imposing requirements and restrictions on part or all of our operations.  These regulations affect our lending practices, capital structure, investment practices, dividend policy, data and privacy protection policies and growth, among other things.  The statutory and regulatory framework under which we operate has changed substantially over the years, and will likely continue to do so.  These changes and other changes to statutes and regulations, including changes in the interpretation or implementation of statutes, regulations or policies, could affect our operations in substantial and unpredictable ways.  Such changes could subject us to additional costs, limit the types of financial services and products we may offer and/or increase the ability of non-banks to offer competing financial services and products.  Failure to comply with laws, regulations or policies could result in sanctions by regulatory agencies, civil money penalties and/or reputation damage, which could have a material adverse effect on our business, financial condition and results of operations.

Our potential future acquisitions and branch expansion could be adversely affected by a number of factors.

Acquisitions of other financial institutions and branch expansion have been a key element of our growth in the past.  There are a number of factors that may impact our ability to continue to grow through acquisition transactions, including strong competition from other financial institutions who are active or potential acquirers of financial institutions in our existing or future markets.  Acquisitions of other financial institutions and new branches must be approved by bank regulators and such approvals are dependent on many factors, including the results of regulatory examinations and CRA ratings.

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We rely heavily on our chief executive officer.

We have experienced substantial growth in assets and deposits, particularly since Dennis E. Nixon became our President in 1979. We do not have an employment agreement with Mr. Nixon and the loss of his services could have a material adverse effect on our business and prospects.

Our information systems may experience an interruption or breach in security.

We rely heavily on communications and information systems to conduct our business.  Our products and services involve the gathering, storage and transition of sensitive information regarding our customers and their accounts.  While we conduct our own data processing, we are reliant on certain external vendors to provide products and services necessary to maintain our day to day operations. As a financial institution we are also subject to and examined for compliance with an array of data protection laws, regulations and guidance, as well as our own internal privacy and information security policies and programs. If our information systems or infrastructure experience a significant disruption or breach, it could lead to unauthorized access to personal or confidential information of our customers in our possession and unauthorized access to our proprietary information, methodologies and business secrets. Any failure, interruption, or breach in security of these systems could result in failures or disruptions in our customer relationship management, general ledger, deposit, loan and other systems.  In addition, if our partners, vendors, or other market participants experience a disruption or breach, it could lead to unauthorized transactions on our or our customer accounts, or unauthorized access to personal or confidential information maintained by those entities.  The occurrence of any failures, interruptions or security breaches of these information systems could damage our reputation, result in a loss of customer business, subject us to additional regulatory scrutiny, or expose us to civil litigation and possible financial liability, any of which could have a material adverse effect on our financial condition and results of operations.

Additional capital or funding to increase liquidity levels may not be available when needed or at all.

Our ability to raise additional capital, if needed, will depend on, among other things, conditions in the capital markets at that time, which are outside our control, and our financial performance.  We have historically had access to a number of alternative sources of liquidity, but if there is an increase in volatility in the credit and liquidity markets, there is no assurance that we will be able to obtain such liquidity on terms that are favorable to us, or at all.  If we were unable to access any of these funding sources when needed, we might be unable to meet customers’ needs, which could adversely impact our financial condition, results of operations, cash flows and liquidity, and level of regulatory-qualifying capital.

Our holding company relies on dividends from our Subsidiary Banks for most of our revenue.

Our holding company receives substantially all of our revenue from dividends from our Subsidiary Banks.  These dividends are the principal source of funds to pay dividends on our common stock to shareholders of our holding company, as well as interest and principal on our holding company’s debt.  Various federal and/or state laws and regulations limit the amount of dividends that our Subsidiary Banks may pay to our holding company.  Our Subsidiary Banks’ ability to pay dividends to us is subject to, among other thing, their earnings, financial condition and need for funds, as well as federal and state governmental policies and regulations applicable to our holding company and Subsidiary Banks which limit the amount that may be paid as dividends without prior regulatory approval, including a statutory requirement that our holding company serve as a source of financial strength for our Subsidiary Banks.  Although our holding company has historically declared semi-annual cash dividends on our common stock, we are not required to do so and may reduce or cease to pay common stock dividends in the future.  If we reduce or cease to pay common stock dividends, the market price of our common stock could be adversely affected.

Severe weather, natural disasters, pandemics, acts of war or terrorism and other external events could significantly impact our business.

Severe weather, natural disasters, acts of war or terrorism and other adverse external events could have a significant impact on our ability to conduct business. These events could affect the stability of our deposit base, impair the ability of borrowers to repay outstanding loans, impair the value of collateral securing loans, cause significant property damage, result in loss of revenue and cause us to incur additional expenses. Although we have established disaster recovery

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policies and procedures, a severe weather event, natural disaster or other external event in or near the markets we serve could have a material adverse effect on our business.

In addition to the external events discussed above, we have and may continue to be adversely affected by the world-wide COVID-19 pandemic. The COVID-19 outbreak has had and may continue to have a direct or indirect adverse impact on certain parts of our customer base. Entire industries within our loan portfolio such as hospitality, restaurants and retail developments have been impacted due to reduced demand related to quarantines, travel restrictions, and other restrictions on business operations. Other industries within our loan portfolio or the communities we serve have experienced and are likely to continue to experience similar disruptions and economic hardships as the COVID-19 pandemic persists. In addition, COVID-19 and the related response/effects have affected and could continue to affect our deposit base, lead to mass layoffs and furloughs, which could impair the ability of our borrowers to repay outstanding loans, impair the value of collateral securing loans, result in loss of revenue, or cause us to incur additional expenses. We will continue to monitor and evaluate the effects and risks presented by the COVID-19 pandemic and work to mitigate negative effects on our customer base and various portfolios.

Additionally, the FRB has reduced interest rates substantially in an attempt to boost business and consumer spending and borrowing, which could have a sustained negative impact on our operations. The Coronavirus Aid, Relief and Economic Security (“CARES”) Act, as well as any subsequent legislative or executive action, intended to provide relief to consumers and small businesses, may be less effective than planned as it may be disrupted by operational challenges in successfully implementing all of its provisions in a timely manner and could ultimately prove to be

inadequate in scale.

Although we maintain contingency and disaster recovery plans for pandemic outbreaks, we created a dedicated response team to closely monitor developments and provide guidance to management to make decisions. We have taken actions to ensure that infection will not spread in our branches and administrative buildings, including increasing disinfecting of facilities, discontinuing travel, and following national, state and local government recommended safety protocols, including promoting social distancing, frequent hand washing, and the wearing of masks. Our branch facilities have remained open where allowed, while still observing safety protocols. Our electronic services such as ATMs and mobile banking have remained fully operational.

Even with these and future precautions, the continued spread and impact of COVID-19 could negatively impact the availability of key personnel or significant numbers of our staff, who are necessary to conduct our business. Such continued spread and impact could also affect the business and operations of third-party vendors and service providers who perform critical services for our business. If the COVID-19 pandemic continues and mitigation is unsuccessful for a prolonged period of time, we could experience a material adverse effect on our business, financial condition, and results of operation.

An impairment in the carrying value of our goodwill could negatively impact our earnings and capital.

Goodwill is initially recorded at fair value and is not amortized, but is reviewed for impairment at least annually or more frequently if events or changes in circumstances indicate that the carrying value may not be recoverable. If we experience disruption in our business, unexpected significant declines in our operating results, or sustained market capitalization declines, it could result in goodwill impairment charges in the future, which would be recorded as charges against earnings. We performed an annual goodwill impairment assessment as of October 1, 2021. Based on our analyses, we concluded that the fair value of our reporting units exceeded the carrying value of our assets and liabilities and, therefore, goodwill was not considered impaired. Depending on the response of the financial industry to the legal, regulatory and competitive changes related to interchange fees, overdraft services and interest on demand deposit accounts, financial institutions may need to change their policies, procedures and operating plans in the future to compete more effectively.  Such changes may require certain financial institutions to take a goodwill impairment charge to account for anticipated reduction in revenue related to such changes, which could have a material adverse effect on our financial condition and results of operation.

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We are subject to environmental liability risks as a result of certain lending activities.

A significant portion of our loan portfolio is secured by real property. During the ordinary course of business, we may foreclose on and take title to properties securing certain loans. There is a risk that hazardous or toxic substances could be found on these properties. If hazardous or toxic substances are found, we may be liable for remediation costs, as well as for personal injury and property damage. Environmental remediation may require us to incur substantial expenses and may materially reduce the affected property’s value or limit our ability to use or sell the affected property. In addition, future laws or more stringent interpretations or enforcement policies with respect to existing laws may increase our exposure to environmental liability. The remediation costs and any other financial liabilities associated with an environmental hazard could have a material adverse effect on our financial condition and results of operations.

Our controls and procedures may fail or be circumvented.

Our management is responsible for establishing and maintaining adequate internal control over financial reporting and for evaluating and reporting on its system of internal controls.  While management regularly reviews and updates our internal controls, disclosure controls and procedures, and corporate governance policies and procedures, any failure or circumvention of our controls and procedures or failure to comply with regulations related to controls and procedures could have a material adverse effect on our business, results of operations and financial condition.

New lines of business or new products and services may subject us to additional risks.

From time to time, we may implement new lines of business or offer new products and services within existing lines of business. In developing and marketing new lines of business and/or new products and services, we may invest significant time and resources. Initial timetables for the introduction and development of new lines of business and/or new products may not be achieved and price and profitability targets may not prove feasible. Compliance with regulations, competitive alternatives, and shifting market preferences, may also impact the successful implementation of a new line of business or a new product or service. Failure to successfully manage these risks in the development and implementation of new lines of business or new products or services could have a material adverse effect on our business, results of operations and financial condition.

Our accounting estimates and risk management processes rely on analytical and forecasting tools and models.

The processes we use to estimate probable loan losses and to measure the fair value of financial instruments, as well as the processes used to estimate the effects of changing interest rates and other market measures on our financial condition and results of operations, depends upon the use of analytical tools and forecasting models. These tools and models reflect assumptions that may not be accurate, particularly in times of market stress or other unforeseen circumstances. Even if these assumptions are adequate, the tools or models may prove to be inadequate or inaccurate because of other flaws in their design or their implementation. Any such failure in our analytical or forecasting tools or models could have a material adverse effect on our business, financial condition and results of operations.

We may be adversely affected by declining crude oil prices.

Decreased market oil prices compress margins for many U.S., Texas and Oklahoma-based oil producers, particularly those that utilize higher-cost production technologies such as hydraulic fracking and horizontal drilling, as well as oilfield service providers, energy equipment manufacturers and transportation suppliers, among others. Energy production and related industries represent a large part of the economies in some of our primary markets. Furthermore, a prolonged period of low oil prices could also have a negative impact on the U.S. economy and, in particular, the economies of energy dominant states such as Texas and Oklahoma. Accordingly, a prolonged period of low oil prices could have a material adverse effect on our business, financial condition and results of operation.

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Risks Related to the Company’s Industry

Our success depends significantly on economic conditions in the local markets in which we operate.

Our success depends, to a certain extent, on local, national and international economic and political conditions and local, as well as governmental monetary policies. We are particularly affected by conditions in our primary market areas of south, central and southeast Texas, including Austin, Dallas and Houston, the State of Oklahoma and Mexico. If economic conditions in these market areas weaken or worsen due to a decline in oil prices or other factors, or fail to improve or to continue to improve, we could experience an increase in loan delinquencies and non-performing assets, decreases in loan collateral values and a decrease in demand for our products and services, any of which could have a material adverse impact on our financial condition and results of operations.

We depend on the accuracy and completeness of information about customers and counterparties as well as the soundness of other financial institutions.

In deciding whether to extend credit or enter into other transactions, we may rely on information furnished by or on behalf of customers and counterparties, including financial statements, credit reports and other financial information. We also rely on representations of those customers, counterparties, financial institutions or other third parties, such as independent auditors, as to the accuracy and completeness of that information. Reliance on inaccurate or misleading financial statements, credit reports or other financial information or problems with the soundness of other financial institutions with which we interact could have a material adverse impact on our business and our financial condition and results of operations.

If we do not adjust to rapid changes in the financial services industry, our financial performance may suffer.

Our ability to deliver strong financial performance and returns on investment to shareholders will depend in part on our ability to expand the scope of available financial services to meet the needs and demands of our customers and our ability to stay abreast of technological innovations and evaluate those technologies that will enable us to compete on a cost-effective basis.  In addition to traditional banks, our competitors also include securities dealers, brokers, mortgage bankers, investment advisors, specialty finance and insurance companies who seek to offer one-stop financial services that may include services that banks have not been able or allowed to offer to their customers in the past. The continued competitive environment in our industry is primarily a result of changes in regulation, technology and product delivery systems, and the accelerating pace of consolidation among financial service providers. Changes in the financial industry may result in the loss of fee income, as well as the loss of customer deposits and the related income generated from those deposits. The loss of these revenue streams and the lower cost deposits as a source of funds could have a material adverse effect on our financial condition and results of operations.  Further, the costs of new technology, including personnel, can be high in both absolute and relative terms. There can be no assurance, given the fast pace of change and innovation, that our technology will meet or continue to meet our operational needs and the needs of our customers.

We are subject to claims and litigation pertaining to intellectual property.

Banking and other financial services companies, including us and our Subsidiary Banks, rely on technology companies to provide information technology products and services necessary to support our day-to-day operations. Technology companies frequently enter into litigation based on allegations of patent infringement or other violations of intellectual property rights. Such claims may increase in the future as the financial services sector becomes more reliant on information technology vendors. The plaintiffs in these actions frequently seek injunctions and substantial damages.

Regardless of the scope or validity of such patents or other intellectual property rights, or the merits of any claims by potential or actual litigants, we may have to engage in protracted litigation. Such litigation is often expensive, time-consuming, disruptive to our operations, and distracting to management. If legal matters related to intellectual property claims were resolved against us, we could be required to make payments in amounts that could have a material adverse effect on its business, financial condition and results of operations.

28

The Dodd-Frank Act, the powers of the CFPB, and the FDIC Overdraft Payment Supervisory Guidance may increase the likelihood of lawsuits against financial institutions.

The Dodd-Frank Act provides that courts must make preemption determinations on a case-by-case basis with the respect to particular state laws and can no longer rely on blanket preemption determinations. Also, the CFPB is authorized to protect consumers from “unfair,” “deceptive” and “abusive” acts and practices. Depending on the future actions of the CFPB, the likelihood of lawsuits against financial institutions related to allegedly “unfair,” “deceptive” and “abusive” acts and practices could increase. Moreover, the costs related to such lawsuits would be significantly increased if the CFPB restricts the use of arbitration and/or class action waivers in consumer banking contracts.

Risks Related to the Company’s Stock

The trading price of our common stock may be volatile.

The trading price of our common stock has fluctuated over time due in part to actual or anticipated variations in our earnings, changes in government regulations, policies and guidance, news reports of trends, concerns and other issues related to the financial services industry, operating and stock performance of our peer companies, new technology used or services offered by traditional and non-traditional competitors, continued low trading volume in our common stock, the impact of short selling activity in our common stock and reports of trends, concerns and other issues related to the financial services industry.  Moreover, general market price declines or market volatility in the future could adversely affect the trading price of our common stock.

The holders of our junior subordinated debentures have rights that are senior to those of our shareholders.

As of December 31, 2021, we had approximately $134 million in junior subordinated debentures outstanding that were purchased by our statutory trusts using the proceeds from the sale of trust preferred securities to third party investors. The junior subordinated debentures are senior to our shares of common stock.  Payments of the principal and interest on the trust preferred securities are conditionally guaranteed by us to the extent not paid or made by each trust.  We must make payments on the junior subordinated debentures (and the related trust preferred securities) before any dividends can be paid on our common stock. While we have the right to defer interest payments on the junior subordinated debentures at any time no dividends may be paid to holders of our common stock during any such deferral, which could cause the trading price of our stock to decline.  

Item 1B.  Unresolved Staff Comments

N/A

Item 2.  Properties

Our principal offices are located at 1200 San Bernardo Avenue, Laredo, Texas and 2418 Jacaman Road, Laredo, Texas in buildings we own and completely occupy and containing approximately 147,000 square feet. The Subsidiary Banks have main banking and branch facilities. All the facilities are customary to the banking industry. The Subsidiary Banks own most of their banking facilities and the remainder are leased. The facilities are located in the regions of Laredo, San Antonio, Austin, Dallas, Houston, Zapata, Eagle Pass, the Rio Grande Valley of Texas, the Coastal Bend area of Texas, and throughout the State of Oklahoma.

None of our Texas state chartered Subsidiary Banks, without the prior written consent of the Texas Banking Commissioner, may invest in an amount in excess of its Tier 1 capital in bank facilities, furniture, fixtures and equipment.  Our Oklahoma state chartered Subsidiary Bank, without the prior written consent of the Oklahoma Banking Commissioner, may not invest in an amount in excess of its Tier 1 and Tier 2 capital in bank facilities, furniture, fixtures and equipment.  None of the Subsidiary Banks exceeds such applicable limitation.  

29

Item 3.  Legal Proceedings

We and our subsidiaries are involved in various legal proceedings that are in various stages of litigation. We and our subsidiaries have determined, based on discussions with our counsel that any material loss in such actions, individually or in the aggregate, is remote or the damages sought, even if fully recovered, would not be considered material to our consolidated financial position or results of operations. Many of these matters are in various stages of proceedings and further developments could cause management to revise our assessment of these matters. Further information regarding legal proceedings has been provided in Note 16 of the Notes to consolidated financial statements located on page 66 of the 2021 Annual Report to Shareholders which is Exhibit 13 hereto and incorporated herein by reference.

Item 4.  Mine Safety Disclosures

None

Item 4A.  Executive Officers of the Registrant

Certain information is set forth in the following table concerning the executive officers of the Company, each of whom has been elected to serve until the 2021 Annual Meeting of Shareholders and until his or her successor is duly elected and qualified.

Name	Age	Position of Office	Officer of the Company Since
Dennis E. Nixon	79	Chairman of the Board of the Company since 1992, President of the Company since 1979, Chief Executive Officer and Director of IBC	1979
Dalia F. Martinez	61	Vice President of the Company since 2021, Executive Vice President of IBC	2021
Judith I. Wawroski	47	Treasurer of the Company since 2017, Principal Financial Officer of the Company since 2017, Executive Vice President of IBC	2017

There are no family relationships among any of the named persons. Each executive officer has held the same position or another executive position with our holding company, or our lead Subsidiary Bank IBC Laredo during the past five years.

Part II

Item 5.  Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

The information set forth under the caption “Preferred Stock, Common Stock and Dividends,” “Stock Repurchase Program,” and “Equity Compensation Plan Information” located on pages 24 through 25 of our 2021 Annual Report is incorporated herein by reference.

Item 6.  Selected Financial Data

The information set forth under the caption “Selected Financial Data” located on page 1 of our 2021 Annual Report is incorporated herein by reference.

30

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

The information set forth under the caption “Management’s Discussion and Analysis of Financial Condition and Results of Operations” located on pages 2 through 26 of our 2021 Annual Report is incorporated herein by reference.

Item 7A.  Quantitative and Qualitative Disclosures about Market Risk

The information set forth under the caption “Liquidity and Capital Resources” located on pages 17 through 21 of our 2021 Annual Report is incorporated herein by reference.

Item 8.  Financial Statements and Supplementary Data

The consolidated financial statements located on pages 29 through 78 of our 2021 Annual Report are incorporated herein by reference.

The condensed quarterly income statements located on pages 79 and 80 of our 2021 Annual Report are incorporated herein by reference.

Item 9.  Changes In and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.  Controls and Procedures

As of the end of the period covered by this Annual Report on Form 10-K, an evaluation was carried out by our management with the participation of our Chief Executive Officer and Chief Accounting Officer,  of the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Chief Executive Officer and Chief Accounting Officer concluded that the disclosure controls and procedures were effective as of the end of the period covered by this report.  Additionally, there were no changes in our internal control over financial reporting (as defined in Rule 13a15(f) under the Securities Exchange Act of 1934) that occurred during the quarter ended December 31, 2021 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal controls over financial reporting, as defined under Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934. Our internal control over financial reporting is a process designed under the supervision of our Chief Executive Officer and Chief Accounting Officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our financial statements for external purposes in accordance with generally accepted accounting principles.

As of December 31, 2021, management assessed the effectiveness of the design and operation of our internal controls over financial reporting based on the criteria for effective internal control over financial reporting established in “Internal Control—Integrated Framework,” issued by the Committee of Sponsoring Organizations (COSO) of the Treadway Commission in 2013. Based on the assessment, management determined that we maintained effective internal control over financial reporting as of December 31, 2021, based on those criteria.

RSM US LLP, the independent registered public accounting firm that audited our 2021 consolidated financial statements included in this Annual Report on Form 10-K, has audited the effectiveness of our internal controls over financial reporting as of December 31, 2021.  Their report, which expresses an unqualified opinion, on the effectiveness of our internal controls over financial reporting as of December 31, 2021 is included in this Item under the heading “Report of Independent Registered Public Accounting Firm.”

31

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders

International Bancshares Corporation:

Opinion on the Internal Control Over Financial Reporting

We have audited International Bancshares Corporation and its subsidiaries' (the Company) internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated statements of condition as of December 31, 2021 and 2020, the related consolidated statements of income, comprehensive income, shareholders' equity and cash flows for each of the three years in the period ended December 31, 2021, and the related notes to the consolidated financial statements of the Company and our report dated February 24, 2022 expressed an unqualified opinion.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

 We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements.

 Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ RSM US LLP

Austin, Texas

February 24, 2022 

32

Item 9B.  Other Information

None.

Item 9C.  Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

Part III

Item 10.  Directors, Executive Officers and Corporate Governance

There is incorporated in this Item 10 by reference to our definitive proxy statement relating to our 2022 Annual Meeting of Shareholders (i) that portion entitled “ELECTION OF DIRECTORS,” (ii) that portion entitled “Audit Committee” in the portion entitled “MEETINGS AND COMMITTEES OF THE BOARD OF DIRECTORS,” (iii) that portion entitled “Code of Ethics,” in the portion entitled “CORPORATE GOVERNANCE,” and (iv) that portion entitled “DELINQUENT SECTION 16(a) REPORTS.” There is also incorporated in this Item 10 by reference Item 4A of this report entitled “Executive Officers of the Registrant.”

Item 11.  Executive Compensation

There is incorporated in this Item 11 by reference to our definitive proxy statement relating to our 2022 Annual Meeting of Shareholders (i) that portion entitled “EXECUTIVE COMPENSATION,” and (ii) that portion entitled “Compensation Committee and Stock Option Plan Committee Interlocks and Insider Participation” in the portion entitled “MEETINGS AND COMMITTEES OF THE BOARD OF DIRECTORS.”

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

There are incorporated in this Item 12 by reference those portions of our definitive proxy statement relating to the Company’s 2022 Annual Meeting of Shareholders entitled “PRINCIPAL SHAREHOLDERS,” “SECURITY OWNERSHIP OF MANAGEMENT,” and “Equity Compensation Plan Information” in the portion entitled “EXECUTIVE COMPENSATION.”

Item 13.  Certain Relationships and Related Transactions, and Director Independence

There is incorporated in this Item 13 by reference to our definitive proxy statement relating to our 2022 Annual Meeting of Shareholders (i) that portion entitled “INTEREST OF MANAGEMENT IN CERTAIN TRANSACTIONS” and (ii) that portion entitled “Director Independence” in the portion entitled “CORPORATE GOVERNANCE.”

Item 14.  Principal Accounting Fees and Services

There is incorporated in this Item 14 by reference that portion of our definitive proxy statement relating to our 2022 Annual Meeting of Shareholders entitled “PRINCIPAL ACCOUNTANT FEES AND SERVICES.”

33

Part IV

Item 15.  Exhibits, Financial Statement Schedules

(a) Documents

1. Our consolidated financial statements are incorporated into Item 8 of this report by reference from the 2021 Annual Report to Shareholders filed as an exhibit hereto and they include:

Reports of Independent Registered Public Accounting Firm (PCAOB ID: 49)

Consolidated:
Statements of Condition as of December 31, 2021 and 2020

Statements of Income for the years ended December 31, 2021, 2020 and 2019
Statements of Comprehensive Income for the years ended December 31, 2021, 2020 and 2019
Statements of Shareholders’ Equity for the years ended December 31, 2021, 2020 and 2019
Statements of Cash Flows for the years ended December 31, 2021, 2020 and 2019
Notes to Consolidated Financial Statements

2. All Financial Statement Schedules are omitted as the required information is inapplicable or the information is presented in the consolidated financial statements or related notes.

3. The following exhibits have previously been filed or are included in this report following the Index to Exhibits:

(3a)*	—Articles of Incorporation of International Bancshares Corporation.
(3b)*	—Articles of Amendment to the Articles of Incorporation of International Bancshares Corporation dated May 22, 1998.
(3c)*	—Articles of Amendment to the Articles of Incorporation of International Bancshares Corporation dated May 21, 2002.
(3d)*	—Articles of Amendment to the Articles of Incorporation of International Bancshares Corporation filed with the Secretary of State of the State of Texas on May 17, 2005.
(3e)*	—Articles of Amendment to the Articles of Incorporation of International Bancshares Corporation filed with the Secretary of State of the State of Texas on December 22, 2008.
(3f)*	—Amended and Restated By-Laws of International Bancshares Corporation.
(3g)*	—Certificate of Amendment to Articles of Incorporation of International Bancshares Corporation filed with the Secretary of State of Texas on May 21, 2013.
(4)	—Description of the Registrant’s Securities.
(10a)*+	—The 1996 International Bancshares Corporation Stock Option Plan.
(10b)*+	—2005 International Bancshares Corporation Stock Option Plan.
(10c)*+	—International Bancshares Corporation 2006 Executive Incentive Compensation Plan.
(10d)*+	—International Bancshares Corporation Long-Term Restricted Stock Unit Plan.
(10e)*+	—2012 International Bancshares Corporation Stock Option Plan.
(10f)*+	—International Bancshares Corporation 2013 Management Incentive Plan.
(13)**	—International Bancshares Corporation 2021 Annual Report
(21)	—List of Subsidiaries of International Bancshares Corporation as of February 18, 2022
(23)	—Consent of Independent Registered Public Accounting Firm
(31a)	—Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
(31b)	—Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

34

(32a)	—Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(32b)	—Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101++	—Interactive Data File
104++	—Cover Page Interactive Data File

* Previously filed

+ Executive Compensation Plans and Arrangements

** Deemed filed only with respect to those portions thereof incorporated herein by reference

++ Attached as Exhibit 101 to this report are the following documents formatted in Inline XBRL (Extensible Business Reporting Language): (i) the Condensed Consolidated Statement of Earnings for the years ended December 31, 2021, 2020 and 2019 (ii) the Condensed Consolidated Balance Sheet as of December 31, 2021 and 2020, (iii) the Condensed Consolidated Statement of Cash Flows for the years ended December 31, 2021, 2020 and 2019, and (iv) Cover Page interactive data.

Item 16. Form 10-K Summary

None

Exhibit Index

Exhibit 4—	Description of Registrant’s Securities
Exhibit 13—	International Bancshares Corporation 2021 Annual Report, Exhibit 13, page 1
Exhibit 21—	List of Subsidiaries of International Bancshares Corporation as of February 18, 2022
Exhibit 23—	Consent of Independent Registered Public Accounting Firm
Exhibit 31a—	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
Exhibit 31b—	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
Exhibit 32a—	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Exhibit 32b—	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Exhibit 101—	Interactive Inline Data File
Exhibit 104—	Cover Page Inline Interactive Data File

35

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

INTERNATIONAL BANCSHARES CORPORATION (Registrant)
By:	/s/ Dennis E. Nixon Dennis E. Nixon President
Date: February 24, 2022

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the capacities and on the date indicated.

	Signatures		Title		Date
/s/ Dennis E. Nixon Dennis E. Nixon		President and Director (Principal Executive Officer)		February 24, 2022
/s/ Judith I. Wawroski Judith I. Wawroski		Treasurer (Principal Financial Officer)		February 24, 2022
/s/ Javier de anda Javier de Anda		Director		February 24, 2022
/s/ Doug Howland Doug Howland		Director		February 24, 2022
/s/ Rudolph M. Miles Rudolph M. Miles		Director		February 24, 2022
/s/ Larry Norton Larry Norton		Director		February 24, 2022
/s/ Roberto resendez Roberto Resendez		Director		February 24, 2022
/s/ Antonio R. Sanchez, Jr. Antonio R. Sanchez, Jr.		Director		February 24, 2022
/s/ Diana G. Zuniga Diana G. Zuniga		Director		February 24, 2022

36

EX-4

Exhibit 4

DESCRIPTION OF SECURITIES
REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

The following is a summary of International Bancshares Corporation’s (“IBC”, “we”, “us”, or “our”) classes of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”).  We have two classes of securities registered under the Exchange Act:  (i) our common stock, par value $1.00 per share (the “Common Stock”); and  (ii) 216,000 shares of preferred stock designated as Series A preferred stock and 24,784,000 unissued shares of preferred stock referred to as “Blank Check” preferred stock (collectively, the “Preferred Stock”).

DESCRIPTION OF COMMON STOCK

The following description of our Common Stock is a summary and does not describe every right, term, or condition of owning our Common Stock.  It is subject to and qualified in its entirety by reference to our amended articles of incorporation (the “Articles of Incorporation”) and amended and restated by-laws (the “By-laws”).  For a complete description, refer to the Articles of Incorporation and the By-laws and any applicable provisions of relevant law, including the applicable provisions of the Texas Business Organizations Code and federal law governing bank holding companies.

General

Pursuant to the Articles of Incorporation, we are authorized to issue 275,000,000 shares of our Common Stock, par value $1.00 per share.  Our Common Stock is listed on the NASDAQ Stock Market under the ticker symbol “IBOC.”  Outstanding shares of our Common Stock are validly issued, fully paid, and non-assessable.  Holders of our Common Stock are not, and will not be, subject to any liability as shareholders.

Dividends

Holders of our Common Stock are entitled to receive dividends if, as, and when declared by our board of directors out of any funds legally available for the payment of dividends.  We will pay dividends on our Common Stock only if we have paid or provided for the payment of all dividends on our then outstanding series of Preferred Stock entitled to preference in the receipt of dividends, for the then current period and, in the case of any cumulative Preferred Stock, all prior periods.  Our Preferred Stock also has such other preferences over our Common Stock as currently, or as may be, fixed by our board of directors.  We are subject to various regulatory policies and requirements relating to the payment of dividends, including requirements to maintain adequate capital above regulatory minimums.  The Board of Governors of the Federal Reserve System, which is also referred to as the Federal Reserve Board, is authorized under applicable law and regulations to determine, under certain circumstances relating to the financial condition of a bank holding company that the payment of dividends would be an unsafe or unsound practice and to prohibit payment thereof.  In addition, we are subject to Texas state laws relating to the payment of dividends.

Voting Rights

Holders of our Common Stock are entitled to one vote for each share held of record on all matters submitted to a vote of shareholders.  Holders of shares of Common Stock are not entitled to cumulative voting rights in the election of directors.

Preemptive Rights

Holders of our Common Stock have no subscription, conversion, or preemptive rights to acquire any additional shares of Common Stock and the Common Stock is not redeemable.

Liquidation Rights

Holders of our Common Stock are also entitled, upon our liquidation, and after payment of all valid claims of creditors and the preferences of Preferred Stock outstanding at the time of liquidation, to receive pro rata distributions of our net assets.  

Classification of the Board

Our board of directors is not classified.

DESCRIPTION OF THE PREFERRED STOCK

The following description of the Preferred Stock is a summary and does not describe every right, term, or condition of owning the Preferred Stock.  It is subject to and qualified in its entirety by reference to the pertinent sections of our Articles of Incorporation and By-Laws, including the certificate of designations creating the Preferred Stock, and any applicable provisions of relevant law, including the applicable provisions of the Texas Business Organizations Code and federal law governing bank holding companies.

General

Our Articles of Incorporation authorize us to issue 216,000 shares of Series A Preferred Stock and 24,784,000 shares of preferred stock typically referred to as “Blank Check” preferred stock.  The Blank Check preferred stock refers to stock for which the rights and restrictions are determined by our board of directors.  We currently have no Series A Preferred Stock outstanding.  In limited circumstances, our Articles of Incorporation authorize our board of directors to issue new shares of Common Stock or Preferred Stock without further shareholder action.

Dividend Rights

The issuance of Preferred Stock may be viewed as having adverse effects upon the dividend rights of holders of our Common Stock.

Preemptive and Conversion Rights

Holders of our Common Stock do not have any preemptive rights with respect to any newly issued Preferred Stock  Our board of directors could adversely affect the voting power of holders of our Common Stock by issuing shares of Preferred Stock with certain voting, conversion, and/or redemption rights.

Certain Anti-Takeover Matters

In the event of a proposed merger, tender offer, or other attempt to gain control of the Company, which the board of directors does not believe to be in the best interests of its shareholders, the board of directors can issue Preferred Stock which could make any such takeover attempt more difficult to complete.  Blank Check Preferred Stock may also be used in connection with the issuance of a shareholder rights plan, sometimes called a poison pill.  Our board of directors has not approved any plan to issue Preferred Stock for this purpose.  Our board of directors does not intend to issue any Preferred Stock except on terms that the board deems to be in the best interests of IBC and its shareholders.

DESCRIPTION OF THE ANTI-TAKEOVER PROVISIONS

General

The provisions of our Articles of Incorporation and By-Laws,which we summarize below, may have an anti-takeover effect and may delay, defer, or prevent a tender offer or takeover attempt that a shareholder might consider in his or her best interest, including those attempts that might result in a premium over the market price for the Common Stock.

Advance Notice Procedure for Shareholder Proposals.

Our By-laws establish an advance notice procedure for the nomination of candidates for election as directors as well as for shareholder proposals to be considered at annual meetings of shareholders.  In general, notice of intent to nominate a director must contain specific information concerning the person to be nominated and must be delivered to or mailed and received at our principal executive offices as follows:

With respect to an election to be held at a special meeting of shareholders for the election of directors, not earlier than the 90th day prior to the special meeting and not later than the close of business on the later of the 60th day prior to the special meeting or the 10th day following the day on which public disclosure is first made of the date of the special meeting and of the nominees proposed by the board of directors to be elected at such meeting.  Shareholders may not nominate persons for election to the board of directors at any special meeting of shareholders unless the business to be transacted at the special meeting, as set forth in the notice of the special meeting, includes the election of directors.

Notice of shareholders’ intent to raise business at an annual meeting, including a nomination of candidate for election as director, must be delivered to or mailed and received at our principal executive offices not later than 60 days nor more than 90 days prior to the first anniversary of the date of the preceding year’s annual meeting.  Proposals from shareholders which are intended to be included in the proxy statement relating to an annual meeting of shareholders must comply with Rule 14a-8 under the Exchange Act, which requires that the proposal be received not less than 120 calendar days before the date of IBC’s proxy statement released to shareholders in connection with the previous year’s annual meeting.  These procedures may operate to limit the ability of shareholders to bring business before a shareholders meeting, including with respect to the nomination of directors or considering any transaction that could result in a change of control.

Limitation of Liability of Directors.

Our Articles of Incorporation and By-laws provide for indemnification of our directors to the fullest extent permitted by applicable law.  Article 2.02-1 of the Texas Business Organizations Code provides that a Texas corporation may indemnify its directors and officers against expenses, judgments, fines, and amounts paid in settlement actually and reasonably incurred by them in connection with any suit or proceeding, whether civil, criminal, administrative or investigative if, in connection with the matters in issue, they acted in good faith and in a manner they reasonably believed to be in, or not opposed to, the best interests of the corporation and, in connection with any criminal suit or proceeding, if in connection with the matters in issue, they had no reasonable cause to believe their conduct was unlawful.  These provisions may have the practical effect in certain cases of eliminating the ability of our shareholders to collect monetary damages from directors and executive officers.  We believe that the provisions in our Articles of Incorporation and By-laws are necessary to attract and retain qualified persons as directors and executive officers.

Regulatory Restrictions on Ownership

The Bank Holding Company Act requires any “bank holding company,” as defined in the Bank Holding Company Act, to obtain the approval of the Federal Reserve Board prior to the acquisition of 5% or more of our Common Stock.  Any person, other than a bank holding company, is required to obtain prior approval of the Federal Reserve Board to acquire 10% or more of our Common Stock under the Change in Bank Control Act.  Any holder of 25% or more of our Common Stock, or a holder of 5% or more if such holder otherwise exercises a “controlling influence” over us, may be subject to regulation as a bank holding company under the Bank Holding Company Act.

EX-13

Exhibit 13

As used in this report, the words “Company,” “we,” “us,” and “our” refer to International Bancshares Corporation, a Texas corporation, its five wholly-owned subsidiary banks (“Subsidiary Banks”), and other subsidiaries.  The information that follows may contain forward-looking statements, which are qualified as indicated under “Cautionary Notice Regarding Forward-Looking Statements” in Item 7 (Management’s Discussion and Analysis of Financial Condition and Results of Operations) of this report.  Our website address is www.ibc.com.

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

(Consolidated)

The following consolidated selected financial data is derived from our audited financial statements as of and for the five years ended December 31, 2021. The following consolidated financial data should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and the Consolidated Financial Statements and related notes in this report.

SELECTED FINANCIAL DATA

	AS OF OR FOR THE YEARS ENDED DECEMBER 31,
	2021		2020		2019		2018		2017
	(Dollars in Thousands, Except Per Share Data)
STATEMENT OF CONDITION
Assets	$	16,046,236	$	14,029,467	$	12,112,894	$	11,871,952	$	12,184,698
Investment securities available-for-sale		4,213,920		3,080,768		3,378,923		3,411,350		4,154,470
Net loans		7,098,777		7,432,695		6,834,668		6,499,905		6,280,485
Deposits		12,617,877		10,721,860		8,826,034		8,696,545		8,544,892
Other borrowed funds		436,138		436,327		626,511		705,665		1,195,225
Junior subordinated deferrable interest debentures		134,642		134,642		134,642		160,416		160,416
Shareholders’ equity		2,308,481		2,177,998		2,118,053		1,939,582		1,838,980
INCOME STATEMENT
Interest income	$	398,103	$	427,008	$	492,401	$	465,822	$	415,136
Interest expense		26,831		39,119		58,629		52,668		38,931
Net interest income		371,272		387,889		433,772		413,154		376,205
Provision for credit losses		7,955		45,379		18,843		6,112		11,221
Non-interest income		222,326		150,579		154,826		165,042		150,406
Non-interest expense		263,316		281,331		309,801		299,501		293,748
Income before income taxes		322,327		211,758		259,954		272,583		221,642
Income taxes		68,405		44,439		54,850		56,652		64,206
Net income		253,922		167,319		205,104		215,931		157,436
Net income available to common shareholders	$	253,922	$	167,319	$	205,104	$	215,931	$	157,436
Per common share:
Basic	$	4.01	$	2.63	$	3.13	$	3.27	$	2.38
Diluted	$	4.00	$	2.62	$	3.12	$	3.24	$	2.36

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management’s discussion and analysis represents an explanation of significant changes in our financial position and results of our operations on a consolidated basis for the three-year period ended December 31, 2021. The following discussion should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021, and the Selected Financial Data and Consolidated Financial Statements included elsewhere herein.

Special Cautionary Notice Regarding Forward Looking Information

Certain matters discussed in this report, excluding historical information, include forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and are subject to the safe harbor created by these sections. Although we believe such forward-looking statements are based on reasonable assumptions, no assurance can be given that every objective will be reached. The words “estimate,” “expect,” “intend,” “believe” and “project,” as well as other words or expressions of a similar meaning, are intended to identify forward-looking statements. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date of this report. Such statements are based on current expectations, are inherently uncertain, are subject to risks and should be viewed with caution. Actual results and experience may differ materially from the forward-looking statements as a result of many factors.

Risk factors that could cause actual results to differ materially from any results that we project, forecast, estimate or budget in forward-looking statements include, among others, the following possibilities:

● Local, regional, national and international economic business conditions and the impact they may have on us, our customers, and such customers’ ability to transact profitable business with us, including the ability of our borrowers to repay their loans according to their terms or a change in the value of the related collateral.

● Volatility and disruption in national and international financial markets.

● Government intervention in the U.S. financial system.

● The unavailability of funding from the FHLB, the Fed or other sources in the future could adversely impact our growth strategy, prospects and performance.

● Changes in consumer spending, borrowing and saving habits.

● Changes in interest rates and market prices, including, changes in federal regulations on the payment of interest on demand deposits.

● Changes in the capital markets we utilize, including changes in the interest rate environment that may reduce margins.

● Changes in state and/or federal laws and regulations, including, the impact of the Consumer Financial Protection Bureau (“CFPB”) as a regulator of financial institutions, changes in the accounting, tax and regulatory treatment of trust preferred securities, as well as changes in banking, tax, securities, insurance, employment, environmental and immigration laws and regulations and the risk of litigation that may follow.

● Changes in U.S.—Mexico trade, including, reductions in border crossings and commerce, integration and implementation of the United States-Mexico-Canada Agreement and the possible imposition of tariffs on imported goods.

● The reduction of deposits from nonresident alien individuals due to the IRS rules requiring U.S. financial institutions to report deposit interest payments made to such individuals.

● The loss of senior management or operating personnel.

● The timing, impact and other uncertainties of the potential future acquisitions, as well as our ability to maintain our current branch network and enter new markets to capitalize on growth opportunities.

● Changes in estimates of future reserve requirements based upon periodic review thereof under relevant regulatory and accounting requirements.

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● Additions to our allowance for credit loss as a result of changes in local, national or international conditions which adversely affect our customers.

● Greater than expected costs or difficulties related to the development and integration of new products and lines of business.

● Increased labor costs and effects related to health care reform and other laws, regulations and legal developments impacting labor costs.

● Impairment of carrying value of goodwill could negatively impact our earnings and capital.

● Changes in the soundness of other financial institutions with which we interact.

● Political instability in the United States or Mexico.

● Technological changes or system failures or breaches of our network security, as well as other cyber security risks, could subject us to increased operating costs, litigation and other liabilities.

● Acts of war or terrorism.

● Natural disasters.

● Reduced earnings resulting from the write down of the carrying value of securities held in our securities available-for-sale portfolios.

● The effect of changes in accounting policies and practices by the Public Company Accounting Oversight Board, the Financial Accounting Standards Board and other accounting standards setters.

● The costs and effects of regulatory developments or regulatory or other governmental inquiries and the results of regulatory examinations or reviews and obtaining regulatory approvals.

● The effect of final rules amending Regulation E that prohibit financial institutions from charging consumer fees for paying overdrafts on ATM and one-time debit card transactions, as well as the effect of any other regulatory or legal developments that limit overdraft services.

● The reduction of income and possible increase in required capital levels related to the adoption of legislation, including and the implementing rules and regulations, including those that establish debit card interchange fee standards and prohibit network exclusivity arrangements and routing restrictions.

● The increase in required capital levels related to the implementation of capital and liquidity rules of the federal banking agencies that address or are impacted by the Basel III capital and liquidity standards.

● The enhanced due diligence burden imposed on banks related to the banks’ inability to rely on credit ratings under Dodd-Frank.

● Our failure or circumvention of our internal controls and risk management, policies and procedures.

● Potential direct and indirect impacts, risks, and uncertainties associated with the novel Coronavirus Disease 2019 (“COVID-19”) or similar global pandemics.

Forward-looking statements speak only as of the date on which such statements are made. It is not possible to foresee or identify all such factors. We make no commitment to update any forward-looking statement, or to disclose any facts, events or circumstances after the date hereof that may affect the accuracy of any forward-looking statement, unless required by law.

Overview

We are headquartered in Laredo, Texas, with 170 facilities and 263 ATMs, providing banking services for commercial, consumer and international customers of north, south, central and southeast Texas and the State of Oklahoma. We are one of the largest independent commercial bank holding companies headquartered in Texas. We, through our Subsidiary Banks, are in the business of gathering funds from various sources and investing those funds in order to earn a return. We, either directly or through a Subsidiary Bank, own one insurance agency, a liquidating subsidiary, a fifty percent interest in an investment banking unit that owns a broker/dealer, a controlling interest in four merchant banking entities, and a majority ownership in a real-estate development partnership. Our primary earnings come from the spread between the interest earned on interest-bearing assets and the interest paid on interest-bearing liabilities. In addition, we generate

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income from fees on products offered to commercial, consumer and international customers.  The sales team of each of our Subsidiary Banks aims to match the right mix of products and services to each customer to best serve the customer’s needs.  That process entails spending time with customers to assess those needs and servicing the sales arising from those discussions on a long-term basis.  Our Subsidiary Banks have various compensation plans, including incentive-based compensation, for fairly compensating employees.  Our Subsidiary Banks also have a robust process in place to review sales that support the incentive-based compensation plan to monitor the quality of the sales and identify any significant irregularities, a process that has been in place for many years.

One of our primary goals is to grow net interest income and non-interest income while adequately managing credit risk, interest rate risk and expenses. Effective management of capital is one of our critical objectives. A key measure of the performance of a banking institution is the return on average common equity (“ROE”). Our ROE for the year ended December 31, 2021 was 11.28% as compared to 7.86% for the year ended December 31, 2020.

We are very active in facilitating trade along the United States border with Mexico. We do a large amount of business with customers domiciled in Mexico and deposits from persons and entities domiciled in Mexico comprise a large and stable portion of the deposit base of our Subsidiary Banks. We also serve the growing Hispanic population through our facilities located throughout north, south, central and southeast Texas and the State of Oklahoma.

Expense control is an essential element of our long-term profitability.  It has been a constant focus of ours for many years and is especially critical during periods of economic uncertainty.  At the onset of the COVID-19 pandemic, management, though a variety of tools, immediately took action and introduced cost-savings measures across our Company, recognizing that the COVID-19 pandemic and the impact it had on market interest rates and other business activities potentially could have severely impacted our business.  As a result, we have achieved a decrease of approximately 15% or $46.5 million, before tax, in non-interest expense over the two-year period ended December 31, 2021, primarily driven by decreases in our employee compensation and benefit plan expenses, professional fees and other general operating expenses with the ultimate goal of ensuring that we align our workforce and operating expenses with our revenue streams.  

In March 2020, the World Health Organization recognized the outbreak of COVID-19 as a pandemic.  The spread of COVID-19 and resulting global health crisis has created extreme negative consequences and disruption in global financial markets and curtailed activity in the governmental, commercial and consumer sectors in 2020 and 2021.  Government responses at all levels have included ordering non-essential businesses be closed, mandating that individuals not working in essential businesses restrict their movement, observe social distancing and shelter in place.  Although some of the governmental mandates have been lifted with the development of several vaccines for COVID-19, the long-term consequences of those actions, and the responses by individuals and businesses affected, remain to be seen.  The rapid decreases in consumer and commercial activity, rapid increases in unemployment, disruption in global supply chains, market downturns and volatility, drastic changes in consumer behavior, new legislation in response to the emergency and decreases in interest rates seen throughout 2020 continued to impact 2021.  

We have continued to work with our customers to assist them through these difficult times and we are continuing to capitalize on our strong capital position and strong liquidity to ensure that we are correctly positioned and have the financial strength to navigate the crisis to protect our Company, our employees, our customers and our shareholders.  In order to protect the health of our employees and customers, while still filling the needs in the communities we serve as an essential business, we have taken steps to ensure proper safety protocols are in place, including enforcing local ordinances, discontinuing significant travel, ensuring social distancing, increasing disinfecting of our facilities, establishing a human resources hotline to address employee concerns and establishing a task force to ensure we are making good decisions.  For our customers, we are also working with them on a case-by-case basis on temporary deferrals of interest and/or principal payments on loans and responding to other individual needs of those customers that continue to experience financial distress.  

On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (“CARES”) Act was signed into law.  It contains substantial tax and spending provisions intended to address the impact of the COVID-19 pandemic.  The CARES Act includes the Paycheck Protection Program (“PPP”), originally a nearly $350 billion program designed to aid small businesses through federally guaranteed loans distributed through banks.  These loans were originally intended to support eight weeks of payroll and certain other costs to help those businesses remain viable and allow their employees to pay

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their bills.  Subsequently, on April 24, 2020, the Paycheck Protection Program and Health Care Enhancement Act (“CARES Part II”) was signed into law.  CARES Part II provided an additional funding of $320 billion for the PPP program.  Then, on June 5, 2020, the Paycheck Protection Program Flexibility Act (“PPPFA”) was signed into law.  The PPPFA, among other things, extended the period of time that businesses could spend PPP loan proceeds on payroll and other eligible costs from eight weeks to the earlier of 24 weeks or December 31, 2020.  On December 27, 2020, the Economic Aid to Hard-Hit Small Businesses, Nonprofits and Venues Act (the “Economic Aid Act”) was enacted, which among other things, reauthorized lending under the PPP to first-time borrowers and for second draws by certain borrowers who have previously received PPP loans.  The Economic Aid Act made available an additional $147 billion for PPP loans requested by March 31, 2021.  We have been active participants in helping our customers obtain PPP loans under all the PPP programs, and as of February 18, 2022, have approximately 968 loans with an approximate value of $71,149,000 outstanding.

Future economic conditions remain uncertain and the impact of those conditions on our business also remains uncertain.  Our business depends on the willingness and ability of our customers to conduct banking and other financial transactions.  Our revenue streams including service charges on deposits and banking and non-banking service charges and fees (ATM and interchange income) have been impacted and may continue to be impacted in the future if economic conditions do not improve.  Expense control has been a long-time focus and essential element to our long-term profitability.  We have kept that focus in mind as we continue to look at operations and create efficiencies and institute cost-control protocols at all levels.  We will continue to monitor our efficiency ratio, a measure of non-interest expense to net interest income plus non-interest income and our overhead burden ratio, a ratio of our operating expenses against total assets, closely.  We use these measures in determining if we are accomplishing our long-term goals of controlling our costs in order to provide superior returns to our shareholders.

Results of Operations

Summary

Consolidated Statements of Condition Information

	December 31, 2021		December 31, 2020		Percent Increase (Decrease)
	(Dollars in Thousands)
Assets	$	16,046,236	$	14,029,467	14.4	%
Net loans		7,098,777		7,432,695	(4.5)
Deposits		12,617,877		10,721,860	17.7
Securities sold under repurchase agreements		439,672		428,148	2.7
Other borrowed funds		436,138		436,327	(0.0)
Junior subordinated deferrable interest debentures		134,642		134,642	—
Shareholders’ equity		2,308,481		2,177,998	6.0

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Consolidated Statements of Income Information

					Percent				Percent
	Year Ended		Year Ended		Increase		Year Ended		Increase
	December 31,		December 31,		(Decrease)		December 31,		(Decrease)
	2021		2020		2021 vs. 2020		2019		2020 vs. 2019
	(Dollars in Thousands, Except Per Share Data)
Interest income	$	398,103	$	427,008	(6.8)	%	$	492,401	(13.3)	%
Interest expense		26,831		39,119	(31.4)			58,629	(33.3)
Net interest income		371,272		387,889	(4.3)			433,772	(10.6)
Provision for credit losses		7,955		45,379	(82.5)			18,843	140.8
Non-interest income		222,326		150,579	47.6			154,826	(2.7)
Non-interest expense		263,316		281,331	(6.4)			309,801	(9.2)
Net income		253,922		167,319	51.8			205,104	(18.4)
Per common share:
Basic	$	4.01	$	2.63	52.5	%	$	3.13	(16.0)	%
Diluted		4.00		2.62	52.7			3.12	(16.0)

Net Income

Net income for the year ended December 31, 2021 increased by 51.8% compared to the same period of 2020.  Net income for 2021 was positively impacted by the sale of an equity interest in a merchant banking investment held by one of our non-bank subsidiaries totaling $42.8 million, net of tax, in the second quarter of 2021.  Net income for 2021 was positively impacted by a decrease in the provision for credit losses compared to the same period of 2020.   We adopted the provisions of Accounting Standards Update No. 2016-13, “Financial Instruments – Credit Losses: (“ASU 2016-13”) on January 1, 2020, resulting in a transition from the long-standing incurred loss model to an expected credit loss model, which recognizes credit losses over the life of a financial asset.  Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions.  The impact of the adoption resulted in a one-time charge to capital of $8.3 million, net of tax.  The credit loss expense charged to operations increased throughout 2020 as a result of increases in the allowance for credit losses (“ACL”) due to deteriorating economic conditions as a result of COVID-19 and the impact of those conditions on certain segments of our loan portfolio.  Economic conditions during 2021 stabilized or improved in certain segments.  The pool specific qualitative loss factors management deemed appropriate for the ACL calculation at December 31, 2020 remained constant in the December 31, 2021 ACL calculation, which positively impacted the calculation and resulted in a decrease of $29.6 million, net of tax, in the credit loss expense charged to operations for the year ended December 31, 2021 compared to the same period of 2020.  

Net Interest Income

Net interest income is the spread between income on interest-earning assets, such as loans and securities, and the interest expense on liabilities used to fund those assets, such as deposits, repurchase agreements and funds borrowed. Net interest income is our largest source of revenue. Net interest income is affected by both changes in the level of interest

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rates and changes in the amount and composition of interest-earning assets and interest-bearing liabilities. Tax-exempt yields have not been adjusted to a tax-equivalent basis.

	For the years ended December 31,
	2021		2020		2019
	Average		Average		Average
	Rate/Cost		Rate/Cost		Rate/Cost
Assets
Interest earning assets:
Loan, net of unearned discounts:
Domestic	4.85	%	5.12	%	6.07	%
Foreign	3.31		3.73		4.15
Investment securities:
Taxable	0.95		1.43		2.23
Tax-exempt	3.38		3.61		3.85
Other	0.13		0.12		1.29
Total interest-earning assets	2.94	%	3.72	%	4.77	%
Liabilities
Interest bearing liabilities:
Savings and interest bearing demand deposits	0.10	%	0.18	%	0.50	%
Time deposits:
Domestic	0.71		1.06		1.09
Foreign	0.37		0.81		1.02
Securities sold under repurchase agreements	0.15		0.28		0.91
Other borrowings	1.75		1.60		1.98
Junior subordinated deferrable interest debentures	2.07		2.85		4.43
Total interest bearing liabilities	0.36	%	0.59	%	0.93	%

The level of interest rates and the volume and mix of earning assets and interest-bearing liabilities impact net income and net interest margin. The yield on average interest-earning assets decreased 21% from 3.72% in 2020 to 2.94% in 2021, and the rates paid on average interest-bearing liabilities decreased 39.0% from 0.59% in 2020 to 0.36% in 2021. The yield on average interest-earning assets decreased 22.0% from 4.77% in 2019 to 3.72% in 2020, and the rates paid on average interest-bearing liabilities decreased 36.6% from .93% in 2019 to .59% in 2020. The majority of our taxable investment securities are invested in mortgage backed securities and, during rapid increases or reduction in interest rates, the yield on these securities do not re-price as quickly as the loans.

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The following table analyzes the changes in net interest income during 2021, 2020 and 2019 and the relative effect of changes in interest rates and volumes for each major classification of interest-earning assets and interest-bearing liabilities. Non-accrual loans have been included in assets for the purpose of this analysis, which reduces the resulting yields:

	2021 compared to 2020						2020 compared to 2019
	Net increase (decrease) due to						Net increase (decrease) due to
	Volume(1)		Rate(1)		Total		Volume(1)		Rate(1)		Total
	(Dollars in Thousands)						(Dollars in Thousands)
Interest earned on:
Loans, net of unearned discounts:
Domestic	$	1,459		(19,237)	$	(17,778)	$	34,585	$	(69,848)	$	(35,263)
Foreign		(64)		(522)		(586)		(254)		(515)		(769)
Investment securities:
Taxable		5,909		(17,673)		(11,764)		(692)		(25,698)		(26,390)
Tax-exempt		(850)		(101)		(951)		(2,285)		(166)		(2,451)
Other		1,971		203		2,174		8,495		(9,015)		(520)
Total interest income	$	8,425	$	(37,330)	$	(28,905)	$	39,849	$	(105,242)	$	(65,393)
Interest incurred on:
Savings and interest bearing demand deposits	$	1,367		(3,615)	$	(2,248)	$	1,287	$	(11,308)	$	(10,021)
Time deposits:
Domestic		784		(3,756)		(2,972)		955		(383)		572
Foreign		121		(4,724)		(4,603)		33		(2,345)		(2,312)
Securities sold under repurchase agreements		210		(515)		(305)		626		(2,132)		(1,506)
Other borrowings		(1,780)		661		(1,119)		(1,549)		(2,091)		(3,640)
Junior subordinated deferrable interest debentures		—		(1,041)		(1,041)		(453)		(2,150)		(2,603)
Total interest expense	$	702	$	(12,990)	$	(12,288)	$	899	$	(20,409)	$	(19,510)
Net interest income	$	7,723	$	(24,340)	$	(16,617)	$	38,950	$	(84,833)	$	(45,883)

(1)  The change in interest due to both rate and volume has been allocated to volume and rate changes in proportion to the relationship of the absolute dollar amounts of the change in each.

As part of our strategy to manage interest rate risk, we strive to manage both assets and liabilities so that interest sensitivities match. One method of calculating interest rate sensitivity is through gap analysis. A gap is the difference between the amount of interest rate sensitive assets and interest rate sensitive liabilities that re-price or mature in a given time period. Positive gaps occur when interest rate sensitive assets exceed interest rate sensitive liabilities, and negative gaps occur when interest rate sensitive liabilities exceed interest rate sensitive assets. A positive gap position in a period of rising interest rates should have a positive effect on net interest income as assets will re-price faster than liabilities. Conversely, net interest income should contract somewhat in a period of falling interest rates. Our management can quickly change our interest rate position at any given point in time as market conditions dictate. Additionally, interest rate changes do not affect all categories of assets and liabilities equally or at the same time. Analytical techniques we employ to supplement gap analysis include simulation analysis to quantify interest rate risk exposure. The gap analysis prepared by management is reviewed by our Investment Committee at least twice a year. The Investment Committee is comprised of certain members of the board of directors and senior managers of the various Subsidiary Banks. Management currently believes that we are properly positioned for interest rate changes; however, if management determines at any time that we are not properly positioned, we will strive to adjust the interest rate sensitive assets and liabilities in order to manage the effect of interest rate changes.

We have established guidelines for acceptable volatility of projected net interest income on the income simulation analysis and the guidelines are reviewed at least annually. As of December 31, 2021, in rising rate scenarios of +100, +200, +300 and +400 basis points, the guidelines established by management require that the net interest income not vary

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by more than minus 15%, 15%, 15%, and 20%, respectively, for the first 12-month period projected. Given the current low interest rate environment, no downward rate shifts were modeled in our income simulations.  At December 31, 2021, the income simulations show that a rate shift of +100, +200, +300 and +400 basis points in interest rates up will vary projected net interest income for the coming 12-month period by +15.6%, +30.47%, +45.95%, and +61.42%, respectively. The basis point shift in interest rates is a hypothetical rate scenario used to calibrate risk and does not necessarily represent management’s current view of future market developments. We believe that we are properly positioned for a potential interest rate increase or decrease.

Allowance for Credit Losses

The ACL increased 1.2% to $110,374,000 at December 31, 2021 from $109,059,000 at December 31, 2020.  The provision for credit losses charged to expense decreased $37,424,000 to $7,955,000 for the year ended December 31, 2021 from $45,379,000 for the same period in 2020.  We adopted the provisions of ASU 2016-13 on January 1, 2020, resulting in a transition from the long-standing incurred loss model to an expected credit loss model, which recognizes credit losses over the life of a financial asset.  The change in methodology combined with deteriorating economic conditions occurring in 2020 as a result of COVID-19 and the impact of those conditions on certain segments of our calculation, resulted in an increase in credit loss expense in 2020.      

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The following table summarizes loan balances at the end of each year and average loans outstanding during the year and the following ratios:  nonaccrual loans to total loans, nonaccrual loans to the ACL, charge-offs to average loans, by loan type, and total charge-off to average total loans.:

	2021			2020			2019
	(Dollars in Thousands)
Allowance for credit losses to total loans outstanding		1.53	%		1.47	%		0.87	%
Allowance for credit losses	$	110,374		$	109,059		$	60,278
Loans, net of unearned discounts	$	7,209,151		$	7,415,464		$	6,894,946
Nonaccrual loans to total loans outstanding		0.03	%		0.27	%		0.07	%
Nonaccrual loans	$	1,921		$	19,822		$	4,886
Loans, net of unearned discounts	$	7,209,151		$	7,415,464		$	6,894,946
Allowance for credit losses to nonaccrual loans		5,745.65	%		550.19	%		1,233.69	%
Allowance for credit losses	$	110,374		$	109,059		$	60,278
Nonaccrual loans	$	1,921		$	19,822		$	4,886
Net charge-offs during the period to average loans outstanding:
Commercial		0.48	%		0.53	%		1.16	%
Net charge-offs during the period	$	8,083		$	8,936		$	14,412
Average amount outstanding	$	1,669,233		$	1,680,502		$	1,245,184
Commercial real estate: other construction and land development		—	%		—	%		—	%
Net charge-offs during the period	$	2		$	19		$	39
Average amount outstanding	$	1,700,220		$	2,186,779		$	2,073,738
Commercial real estate: farmland and commercial		0.01	%		—	%		0.38	%
Net charge-offs during the period	$	364		$	55		$	7,353
Average amount outstanding	$	2,573,151		$	2,010,666		$	1,936,867
Commercial real estate: multifamily		—	%		—	%		—	%
Net charge-offs during the period	$	—		$	—		$	—
Average amount outstanding	$	401,551		$	277,416		$	236,151
Residential: first lien		0.09	%		0.04	%		0.04	%
Net charge-offs during the period	$	373		$	160		$	201
Average amount outstanding	$	433,262		$	433,586		$	460,779
Residential: junior lien		—	%		0.02	%		0.06	%
Net charge-offs during the period	$	25		$	124		$	435
Average amount outstanding	$	501,451		$	658,723		$	722,207
Consumer		0.44	%		0.66	%		1.06	%
Net charge-offs during the period	$	176		$	280		$	487
Average amount outstanding	$	39,890		$	42,558		$	45,839
Foreign		—	%		—	%		—	%
Net charge-offs during the period	$	1		$	—		$	1
Average amount outstanding	$	123,524		$	125,234		$	131,356
Total loans		0.12	%		0.13	%		0.33	%
Net charge-offs during the period	$	9,024		$	9,574		$	22,928
Average amount outstanding	$	7,442,282		$	7,415,464		$	6,852,121

(1)  The average balances for purposes of the above table are calculated on the basis of daily balances.

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The ACL has been allocated based on the amount management has deemed to be reasonably necessary to provide for the credit losses incurred within the following categories of loans at the dates indicated and the percentage of loans to total loans in each category:

	At December 31,
	2021				2020				2019
			Percent				Percent				Percent
	Allowance		of total		Allowance		of total		Allowance		of total
	(Dollars in Thousands)
Commercial	$	23,178	20.8	%	$	21,908	23.7	%	$	11,145	18.7	%
Commercial real estate: other construction and land development		35,390	23.1			37,612	24.5			18,152	31.7
Commercial real estate: farmland & commercial		35,654	37.6			30,000	30.4			16,533	27.5
Commercial real estate: multifamily		3,291	4.0			5,051	5.8			1,786	2.8
Residential : first lien		4,073	5.6			3,874	5.4			3,762	6.3
Residential: junior lien		7,754	6.4			9,570	7.9			7,535	10.3
Consumer		272	0.6			291	0.5			542	0.7
Foreign		762	1.9			753	1.8			823	2.0
	$	110,374	100.0	%	$	109,059	100.0	%	$	60,278	100.0	%

The ACL primarily consists of the aggregate ACL’s of the Subsidiary Banks. The ACL’s are established through charges to operations in the form of provisions for credit losses.

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial, financial and agricultural or real estate loans are generally considered by management to represent a loss, in whole or part, (i) when an exposure beyond any collateral coverage is apparent, (ii) when no further collection of the portion of the loan so exposed is anticipated based on actual results, (iii) when the credit enhancements, if any, are not adequate, and (iv) when the borrower’s financial condition would so indicate. Generally, unsecured consumer loans are charged-off when 90 days past due.

The ACL is a reserve established through a provision for credit losses charged to expense, which represents management’s best estimate of credit losses within the existing portfolio of loans based on our internal ACL calculation. While our management considers that it is generally able to identify borrowers with financial problems reasonably early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting credit losses. The determination that a loan is likely to be uncollectible and that it should be wholly or partially charged-off as a loss is an exercise of judgment. Similarly, the determination of the adequacy of the ACL can be made only on a subjective basis. Our management believes that the ACL at December 31, 2021 was adequate to absorb expected losses from loans and other financial instruments in the portfolio at that date. See Critical Accounting Policies on page 21.

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Non-Interest Income

					Percent				Percent
	Year Ended		Year Ended		Increase		Year Ended		Increase
	December 31,		December 31,		(Decrease)		December 31,		(Decrease)
	2021		2020		2021 vs. 2020		2019		2020 vs. 2019
	(Dollars in Thousands)
Service charges on deposit accounts	$	66,205	$	61,983	6.8	%	$	72,502	(14.5)	%
Other service charges, commissions and fees
Banking		54,280		48,986	10.8			50,996	(3.9)
Non-banking		8,007		7,822	2.4			7,832	(0.1)
Investment securities transactions, net		(16)		(5)	220.0			(12)	(58.3)
Other investments, net		68,807		4,920	1,298.5			5,985	(17.8)
Other income		25,043		26,873	(6.8)			17,523	53.4
Total non-interest income	$	222,326	$	150,579	47.6	%	$	154,826	(2.7)	%

Total non-interest income for the year ended December 31, 2021 increased by 47.6% compared to the same period of 2020.  Income from service charges on deposits increased for the year ended December 31, 2021 compared to the same period of 2020 due to an increase in customer activity as a result of the current economic environment and a decrease in the impact of the COVID-19 pandemic on day-to day activities.  Non-interest income from other investments for the year ended December 31, 2021 was positively impacted by the sale of an equity interest in a merchant banking investment held by one of our non-bank subsidiaries.  Income from service charges on deposit accounts for the year ended December 31, 2020 were negatively impacted due to a decrease in customer activity as a result of the current economic environment and the continued impact of the COVID-19 pandemic on day-to-day activities.      

Non-Interest Expense

					Percent				Percent
	Year Ended		Year Ended		Increase		Year Ended		Increase
	December 31,		December 31,		(Decrease)		December 31,		(Decrease)
	2021		2020		2021 vs. 2020		2019		2020 vs. 2019
	(Dollars in Thousands)
Employee compensation and benefits	$	123,480	$	130,039	(5.0)	%	$	145,929	(10.9)	%
Occupancy		26,176		24,909	5.1			28,635	(13.0)
Depreciation of bank premises and equipment		25,028		28,318	(11.6)			28,270	0.2
Professional fees		7,890		12,546	(37.1)			17,661	(29.0)
Deposit insurance assessments		4,389		1,870	134.7			1,416	32.1
Net expense, other real estate owned		5,073		9,808	(48.3)			6,377	53.8
Advertising		4,037		4,284	(5.8)			7,748	(44.7)
Software and software maintenance		17,794		19,238	(7.5)			19,850	(3.1)
Other		49,449		50,319	53.4			53,915	(6.7)
Total non-interest expense	$	263,316	$	281,331	(6.4)	%	$	309,801	(9.2)	%

Non-interest expense for the year ended December 31, 2021 decreased by 6.4% compared to the same period of 2020.  The decrease is primarily due to our continued employee compensation and benefits expense reductions, and is primarily being driven by efforts to right-size and closely manage our workforce commensurate with decreased activities in our branches arising from the COVID-19 pandemic while ensuring that we are able to continue to serve our customers.  We continue to actively monitor and manage our controllable non-interest expenses and continue to develop operating efficiencies through a variety of methods, with the ultimate goal of ensuring we align non-interest expenses with our operations and revenue streams.  Total non-interest expense has decreased by approximately 15.0% or $46.5 million, over the two-year period ending December 31, 2021, primarily driven by decreases in our employee compensation and benefit plans expenses, professional fees and other general operating expenses.  Non-interest expense for the year ended December 31, 2020 decreased by 9.2% compared to the same period of 2019 for similar reasons.  These expense reductions have

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occurred because management acted quickly and precisely at the onset of the pandemic to mitigate the impact of reduced interest rates and business activities.      

Effects of Inflation

The principal component of earnings is net interest income, which is affected by changes in the level of interest rates. Changes in rates of inflation affect interest rates. It is difficult to precisely measure the impact of inflation on net interest income because it is not possible to accurately differentiate between increases in net interest income resulting from inflation and increases resulting from increased business activity. Inflation also raises costs of operations, primarily those of employment and services.

Financial Condition

Investment Securities

The following tables set forth the average yield, by contractual maturities of debt investment securities, at December 31, 2021, except for the totals, which reflect the weighted average yields. Actual maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	Available for Sale Maturing
	Within one			After one but			After five but
	year			within five years			within ten years			After ten years
	Adjusted			Adjusted			Adjusted			Adjusted
	Yield			Yield			Yield			Yield
	(Dollars in Thousands)
Residential mortgage-backed securities		2.00	%		3.35	%		2.45	%		1.65	%
Obligations of states and political subdivisions		—			—			—			4.00
Total		2.00	%		3.35	%		2.45	%		1.68	%

	Held to Maturity Maturing
	Within one			After one but			After five but
	year			within five years			within ten years			After ten years
	Adjusted			Adjusted			Adjusted			Adjusted
	Yield			Yield			Yield			Yield
	(Dollars in Thousands)
Other securities		1.65	%		0.62	%		—	%		—	%
Total		1.65	%		0.62	%		—	%		—	%

Residential mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), Federal National Mortgage Association (“Fannie Mae”), and the Government National Mortgage Association (“Ginnie Mae”). Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities.

Loans

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The following table shows the amounts of loans  outstanding as of December 31, 2021, which based on remaining scheduled repayments of principal are due in the years indicated. Also, the amounts due after one year are classified according to the sensitivity to changes in interest rates:

	Maturing
			After one but		After five but
	Within one		within five		within fifteen			After fifteen
	year		years		years			years	Total
	(Dollars in Thousands)
Commercial	$	437,317	$	811,006	$	223,063	$	30,466	$	1,501,852
Commercial real estate: other construction & land development		577,872		1,046,914		43,174		153		1,668,113
Commercial real estate: farmland & commercial		626,083		1,797,784		287,074		115		2,711,056
Commercial real estate: multifamily		76,680		200,335		6,538		983		284,536
Residential: first lien		21,242		117,921		63,556		200,939		403,658
Residential: junior lien		14,290		15,969		350,686		83,228		464,173
Consumer		27,339		13,232		361		34		40,966
Foreign		81,471		39,485		5,407		8,434		134,797
Total	$	1,862,294	$	4,042,646	$	979,859	$	324,352	$	7,209,151

	Interest sensitivity
	Fixed Rate		Variable Rate
	(Dollars in Thousands)
Amount due after one year:
Commercial	$	336,773	$	727,762
Commercial real estate: other construction & land development		4,292		1,085,949
Commercial real estate: farmland & commercial		49,548		2,035,425
Commercial real estate: multifamily		26,642		181,214
Residential: first lien		236,348		146,068
Residential: junior lien		440,112		9,771
Consumer		13,602		25
Foreign		15,040		38,286
Total	$	1,122,357	$	4,224,500

International Operations

On December 31, 2021, we had $134,797,000 (.8% of total assets) in loans outstanding to borrowers domiciled in foreign countries, which included primarily borrowers domiciled in Mexico. The loan policies of our Subsidiary Banks generally require that loans to borrowers domiciled in foreign countries be primarily secured by assets located in the United

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States or have credit enhancements in the form of guarantees from significant United States corporations. The composition of such loans as of December 31, 2021 and 2020 is presented below.

	For the year ended December 31,
	2021		2020
	Amount of		Amount of
	Loans		Loans
	(Dollars in Thousands)
Secured by certificates of deposit in United States banks	$	85,532	$	85,085
Secured by United States real estate		29,436		33,135
Secured by other United States collateral (securities, gold, silver, etc.)		5,676		7,888
Unsecured		10,224		8,008
Other (principally Mexico real estate)		3,929		4,854
	$	134,797	$	138,970

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Deposits

The following table illustrates the average amounts of deposits for the twelve months ended December 31, 2021 and December 31, 2020.  Included in the table is our estimate of the amount of total uninsured deposits as of December 31, 2021 and December 31, 2020.

	2021		2020
	Average Balance		Average Balance
	(Dollars in Thousands)
Deposits:
Demand—non-interest bearing
Domestic	$	4,370,929	$	3,396,406
Foreign		984,175		815,582
Total demand non-interest bearing		5,355,104		4,211,988
Savings and interest bearing demand
Domestic		3,315,831		2,696,298
Foreign		981,730		840,716
Total savings and interest bearing demand		4,297,561		3,537,014
Time certificates of deposit
Domestic		1,077,371		1,003,221
Foreign		1,083,866		1,068,907
Total time, certificates of deposit		2,161,237		2,072,128
Total deposits	$	11,813,902	$	9,821,130
Uninsured Deposits:	$	4,904,469	$	3,749,104

Scheduled maturities of time deposits in amounts of $250,000 or more at December 31, 2021 and an estimate of uninsured time deposits, were as follows:

Due within 3 months or less	$	440,408
Due after 3 months and within 6 months		270,819
Due after 6 months and within 12 months		352,627
Due after 12 months		28,714
	$	1,092,568
Portion of time deposits that are uninsured	$	689,845

We offer a variety of deposit accounts having a wide range of interest rates and terms. We rely primarily on our high-quality customer service, sales programs, customer referrals and advertising to attract and retain these deposits. Deposits provide the primary source of funding for our lending and investment activities, and the interest paid for deposits must be managed carefully to control the level of interest expense. Deposits at December 31, 2021 were $12,617,877,000, an increase of 17.7% from $10,721,860,000 at December 31, 2020.  Deposits during the current economic environment have increased as customers have received proceeds from CARES Act programs, such as stimulus payments and PPP loan proceeds, and presumably decided to save and preserve cash instead of spending during these uncertain times.  

Other Borrowed Funds

Other borrowed funds include FHLB borrowings which are long-term borrowings issued by the FHLB of Dallas and the FHLB of Topeka at the market price offered at the time of funding.  These borrowings are secured by residential

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mortgage-backed investment securities and a portion of our loan portfolio.  At December 31, 2021, other borrowed funds totaled $436,138,000, a slight decrease from $436,327,000 at December 31, 2020.  

Return on Equity and Assets

Certain key ratios for the years ended December 31, 2021, 2020 and 2019 follow ⁽¹⁾:

	Years ended
	December 31,
	2021		2020		2019
Percentage of net income to:
Average shareholders’ equity	11.28	%	7.86	%	9.97	%
Average total assets	1.68		1.27		1.71
Percentage of average shareholders’ equity to average total assets	14.88		16.20		17.17
Percentage of cash dividends per share to net income per share	28.70		41.60		33.38

⁽¹⁾  The average balances for purposes of the above table are calculated on the basis of daily balances.

Liquidity and Capital Resources

Liquidity

The maintenance of adequate liquidity provides our Subsidiary Banks with the ability to meet potential depositor withdrawals, provide for customer credit needs, maintain adequate statutory reserve levels and take full advantage of high-yield investment opportunities as they arise. Liquidity is afforded by access to financial markets and by holding appropriate amounts of liquid assets. Our Subsidiary Banks derive their liquidity largely from deposits of individuals and business entities. Other important funding sources for our Subsidiary Banks during 2021 and 2020 were borrowings from the FHLB, securities sold under repurchase agreements and large certificates of deposit, requiring management to closely monitor its asset/liability mix in terms of both rate sensitivity and maturity distribution. Our Subsidiary Banks have had a long-standing relationship with the FHLB and keep open, unused, lines of credit in order to fund liquidity needs. In the event that the FHLB indebtedness is not renewed, the repayment of the outstanding indebtedness would more than likely be repaid through proceeds generated from the sales of unpledged available-for-sale securities. We maintain a sizable, high quality investment portfolio to provide significant liquidity. These securities can be sold or sold under agreements to repurchase, to provide immediate liquidity. As in the past, we will continue to monitor the volatility and cost of funds in an attempt to match maturities of rate-sensitive assets and liabilities and respond accordingly to anticipated fluctuations in interest rates over reasonable periods of time.

Asset/Liability Management

Our funds management policy has as its primary focus the measurement and management of the Subsidiary Banks’ earnings at risk in the face of rising or falling interest rate forecasts. The earliest and most simplistic concept of earnings at risk measurement is the gap report, which is used to generate a rough estimate of the vulnerability of net interest income to changes in market rates as implied by the relative re-pricings of assets and liabilities. The gap report calculates the difference between the amounts of assets and liabilities re-pricing across a series of intervals in time, with emphasis typically placed on the one-year period. This difference, or gap, is usually expressed as a percentage of total assets.

If an excess of liabilities over assets matures or re-prices within the one-year period, the statement of condition is said to be negatively gapped. This condition is sometimes interpreted to suggest that an institution is liability-sensitive, indicating that earnings would suffer from rising rates and benefit from falling rates. If a surplus of assets over liabilities occurs in the one-year time frame, the statement of condition is said to be positively gapped, suggesting a condition of asset sensitivity in which earnings would benefit from rising rates and suffer from falling rates.

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The gap report thus consists of an inventory of dollar amounts of assets and liabilities that have the potential to mature or re-price within a particular period. The flaw in drawing conclusions about interest rate risk from the gap report is that it takes no account of the probability that potential maturities or re-pricings of interest-rate-sensitive accounts will occur, or at what relative magnitudes. Because simplicity, rather than utility, is the only virtue of gap analysis, financial institutions increasingly have either abandoned gap analysis or accorded it a distinctly secondary role in managing their interest-rate risk exposure.

The net interest rate sensitivity at December 31, 2021, is illustrated in the following table. This information reflects the balances of assets and liabilities whose rates are subject to change. As indicated in the table below, we are asset sensitive through all of the time periods illustrated. The table shows the sensitivity of the statement of condition at one point in time and is not necessarily indicative of the position at future dates.

INTEREST RATE SENSITIVITY

(Dollars in Thousands)

	Rate/Maturity
			Over 3		Over 1
	3 Months		Months to		Year to 5		Over 5
December 31, 2021	or Less		1 Year		Years		Years		Total
	(Dollars in Thousands)
Rate sensitive assets
Investment securities	$	507,013	$	1,370,489	$	2,301,340	$	44,557	$	4,223,399
Loans, net of non-accruals		5,715,221		161,237		466,044		864,728		7,207,230
Total earning assets	$	6,222,234	$	1,531,726	$	2,767,384	$	909,285	$	11,430,629
Cumulative earning assets	$	6,222,234	$	7,753,960	$	10,521,344	$	11,430,629
Rate sensitive liabilities
Time deposits	$	938,941	$	1,132,743	$	117,107	$	12	$	2,188,803
Other interest bearing deposits		4,590,548		—		—		—		4,590,548
Securities sold under repurchase agreements		428,235		11,437		—		—		439,672
Other borrowed funds		—		—		—		436,138		436,138
Junior subordinated deferrable interest debentures		134,642		—		—		—		134,642
Total interest bearing liabilities	$	6,092,366	$	1,144,180	$	117,107	$	436,150	$	7,789,803
Cumulative sensitive liabilities	$	6,092,366	$	7,236,546	$	7,353,653	$	7,789,803
Repricing gap	$	129,868	$	387,546	$	2,650,277	$	473,135	$	3,640,826
Cumulative repricing gap		129,868		517,414		3,167,691		3,640,826
Ratio of interest-sensitive assets to liabilities		1.02		1.34		23.63		2.08		1.47
Ratio of cumulative, interest-sensitive assets to liabilities		1.02		1.07		1.43		1.47

The detailed inventory of statement of condition items contained in gap reports is the starting point of income simulation analysis. Income simulation analysis also focuses on the variability of net interest income and net income, but without the limitations of gap analysis. In particular, the fundamental, but often unstated, assumption of the gap approach that every statement of condition item that can re-price will do so to the full extent of any movement in market interest rates is taken into consideration in income simulation analysis.

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Accordingly, income simulation analysis captures not only the potential of assets and liabilities to mature or re-price, but also the probability that they will do so. Moreover, income simulation analysis focuses on the relative sensitivities of these balance sheet items and projects their behavior over an extended period of time in a motion picture rather than snapshot fashion. Finally, income simulation analysis permits management to assess the probable effects on balance sheet items not only of changes in market interest rates, but also of proposed strategies for responding to such changes. We and many other institutions rely primarily upon income simulation analysis in measuring and managing exposure to interest rate risk.

We have established guidelines for acceptable volatility of projected net interest income on the income simulation analysis and the guidelines are reviewed at least annually. As of December 31, 2021, in rising rate scenarios of +100, +200, +300 and +400 basis points, the guidelines established by management require that the net interest income not vary by more than minus 15%, 15%, 15%, and 20%, respectively, for the first 12-month period projected. Given the current low interest rate environment, no downward rate shifts were modeled in our income simulations.  At December 31, 2021, the income simulations show that a rate shift of +100, +200, +300 and +400 basis points in interest rates up will vary projected net interest income for the coming 12-month period by +15.6%, +30.47%, +45.95%, and +61.42%, respectively. The basis point shift in interest rates is a hypothetical rate scenario used to calibrate risk and does not necessarily represent management’s current view of future market developments. We believe that we are properly positioned for a potential interest rate increase or decrease.

All the measurements of risk described above are made based upon our business mix and interest rate exposures at the particular point in time. The exposure changes continuously as a result of our ongoing business and our risk management initiatives. While management believes these measures provide a meaningful representation of our interest rate sensitivity, they do not necessarily take into account all business developments that have an effect on net income, such as changes in credit quality or the size and composition of the statement of condition.

Our principal sources of liquidity and funding dividends from subsidiaries and borrowed funds, with such funds being used to finance our cash flow requirements. We closely monitor the dividend restrictions and availability from our Subsidiary Banks as disclosed in Note 20 to the Consolidated Financial Statements. At December 31, 2021, the aggregate amount legally available to be distributed to us from our Subsidiary Banks as dividends was approximately $1,066,000,000, assuming that each Subsidiary Bank continues to be classified as “well-capitalized” under the applicable regulations in effect at December 31, 2021. The restricted capital (capital and surplus) of our Subsidiary Banks was approximately $1,225,260,000 as of December 31, 2021. The undivided profits of our Subsidiary Banks were approximately $1,394,877,000 as of December 31, 2021.

At December 31, 2021, we had outstanding $436,138,000 in other borrowed funds and $134,642,000 in junior subordinated deferrable interest debentures. In addition to borrowed funds and dividends, we have a number of other available alternatives to finance the growth of our Subsidiary Banks as well as future growth and expansion.

Capital

We maintain an adequate level of capital as a margin of safety for our depositors and shareholders. At December 31, 2021, shareholders’ equity was $2,308,481,000 compared to $2,177,998,000 at December 31, 2020, an increase of $130,483,000, or 6.2%. Shareholders’ equity increased primarily due to the retention of earnings, offset by the payment of cash dividends to shareholders and repurchases of our common stock in the form of treasury stock. The accumulated other comprehensive income is not included in the calculation of regulatory capital ratios.

During 1990, the FRB adopted a minimum leverage ratio of 3% for the most highly rated bank holding companies and at least 4% to 5% for all other bank holding companies. Our leverage ratio (defined as shareholders’ equity plus eligible trust preferred securities issued and outstanding less goodwill and certain other intangibles divided by average quarterly assets) was 13.94% at December 31, 2021 and 14.92% at December 31, 2020. The core deposit intangibles and goodwill of $282,532,000 as of December 31, 2021, are deducted from the sum of core capital elements when determining our capital ratios.

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The FRB has adopted risk-based capital guidelines which assign risk weightings to assets and off-balance sheet items. The guidelines also define and set minimum capital requirements (risk-based capital ratios). Under the final 1992 rules, all banks are required to have Tier 1 capital of at least 4.0% of risk-weighted assets and total capital of 8.0% of risk-weighted assets. Tier 1 capital consists principally of shareholders’ equity plus trust preferred securities issued and outstanding less goodwill and certain other intangibles, while total capital consists of Tier 1 capital, certain debt instruments and a portion of the reserve for loan losses. In order to be deemed well-capitalized pursuant to the regulations, an institution must have a total risk-weighted capital ratio of 10%, a Tier 1 risk-weighted ratio of 8% and a Tier 1 leverage ratio of 5%. We had risk-weighted Tier 1 capital ratios of 21.59% and 20.25% and risk weighted total capital ratios of 22.73% and 21.4% as of December 31, 2021 and 2020, respectively, which are well above the minimum regulatory requirements and exceed the well-capitalized ratios (see Note 19 to Notes to Consolidated Financial Statements).

In July 2013, the Federal Deposit Insurance Corporation (“FDIC”) and other regulatory bodies established a new, comprehensive capital framework for U.S. banking organizations, consisting of minimum requirements that increase both the quantity and quality of capital held by banking organizations. The final rules are a result of the implementation of the BASEL III capital reforms and various Dodd-Frank related capital provisions. Consistent with the Basel international framework, the rules include a minimum ratio of Common Equity Tier 1 (“CET1”) to risk-weighted assets of 4.5% and a CET1 capital conservation buffer of 2.5% of risk-weighted assets.  The capital conservation buffer began phasing-in on January 1, 2016 at .625% and increased each year until January 1, 2019, when we were required to have a 2.5% capital conservation buffer, effectively resulting in a minimum ratio of CET1 capital to risk-weighted assets of at least 7% upon full implementation. The rules also raised the minimum ratio of Tier 1 capital to risk-weighted assets from 4% to 6% and include a minimum leverage ratio of 4% for all banking organizations. Regarding the quality of capital, the rules emphasize CET1 capital and implements strict eligibility criteria for regulatory capital instruments. The rules also improve the methodology for calculating risk-weighted assets to enhance risk sensitivity. The rules were subject to a four-year phase in period for mandatory compliance and we were required to begin to phase in the rules beginning on January 1, 2015.  We believe that as of December 31, 2021, we meet all fully phased-in capital adequacy requirements.

On November 21, 2017, the OCC, the Federal Reserve and the FDIC finalized a proposed rule that extends the current treatment under the regulatory capital rules for certain regulatory capital deductions and risk weights and certain minority interest requirements, as they apply to banking organizations that are not subject to the advanced approaches capital rules.  Effective January 1, 2018, the rule also pauses the full transition to the Basel III treatment of mortgage servicing assets, certain deferred tax assets, investments in the capital of unconsolidated financial institutions and minority interests.  The agencies are also considering whether to make adjustments to the capital rules in response to CECL (the FASB Standard relating to current expected credit loss) and its potential impact on regulatory capital.

On December 7, 2017, the Basel Committee on Banking Supervision unveiled the latest round of its regulatory capital framework, commonly called “Basel IV.”  The framework makes changes to the capital framework first introduced as “Basel III” in 2010.  The committee targeted 2022-2027 as the timeframe for implementation by regulators in individual countries, including the U.S. federal bank regulatory agencies (after notice and comment).

Junior Subordinated Deferrable Interest Debentures

We have formed five statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. These statutory business trusts (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (the “Debentures”) that we issued. As of December 31, 2021 and December 31, 2020, the principal amount of debentures outstanding totaled $134,642,000.

The Debentures are subordinated and junior in right of payment to all of our present and future senior indebtedness (as defined in the respective indentures), and are pari passu with one another. The interest rate payable on, and the payment terms of the Debentures are the same as the distribution rate and payment terms of the respective issues of Capital and Common Securities issued by the Trusts. We have fully and unconditionally guaranteed the obligations of each of the Trusts with respect to the Capital and Common Securities. We have the right, unless an Event of Default (as defined in the Indentures) has occurred and is continuing, to defer payment of interest on the Debentures for up to twenty consecutive quarterly periods on Trusts VIII, IX, X, XI and XII. If interest payments on any of the Debentures are deferred, distributions

20

on both the Capital and Common Securities related to that Debenture would also be deferred. The redemption prior to maturity of any of the Debentures may require the prior approval of the Federal Reserve and/or other regulatory bodies.

For financial reporting purposes, the Trusts are treated as investments and not consolidated in the consolidated financial statements. Although the Capital Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold would qualify as Tier 2 capital. At December 31, 2021 and December 31, 2020, the total $134,642,000 of the Capital Securities outstanding qualified as Tier 1 capital.

The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2021:

	Junior
	Subordinated
	Deferrable
	Interest		Repricing			Interest Rate		Optional
	Debentures		Frequency	Interest Rate		Index	Maturity Date	Redemption Date(1)
	(in thousands)
Trust VIII		25,774	Quarterly	3.17	%	LIBOR + 3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	1.75	%	LIBOR + 1.62	October 2036	October 2011
Trust X		21,021	Quarterly	1.78	%	LIBOR + 1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	1.75	%	LIBOR + 1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	1.62	%	LIBOR + 1.45	September 2037	September 2012
	$	134,642

(1) The Capital Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

Critical Accounting Policies

We have established various accounting policies which govern the application of accounting principles in the preparation of our consolidated financial statements. The significant accounting policies are described in the Notes to the Consolidated Financial Statements. Certain accounting policies involve significant subjective judgments and assumptions by management which have a material impact on the carrying value of certain assets and liabilities; management considers such accounting policies to be critical accounting policies.

We consider our estimated ACL as a policy critical to the sound operations of our Subsidiary Banks. We adopted the provisions of Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” on January 1, 2020.  ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset.  Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions.  The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset.  Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense.  Loan losses or recoveries are charged or credited directly to the ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.

The estimation of the ACL is based on a loss-rate methodology that measures lifetime losses on loan pools that have similar risk characteristics. Loans that do not have similar risk characteristics are evaluated on an individual basis. The segmentation of the loan portfolio into pools requires a balancing process between capturing similar risk characteristics and containing sufficient loss history to provide meaningful results.  Our segmentation starts at the general loan category with further sub-segmentation based on collateral types that may be of meaningful size and/or may contain

21

sufficient differences in risk characteristics based on management’s judgement that would warrant further segmentation. The general loan categories along with primary risk characteristics used in our calculation are as follows:

Commercial and industrial loans. This category includes loans extended to a diverse array of businesses for working capital or equipment purchases. These loans are mostly secured by the collateral pledged by the borrower that is directly related to the business activities of the company such as equipment, accounts receivable and inventory. The borrower’s abilities to generate revenues from equipment purchases, collect accounts receivable, and to turn inventory into sales are risk factors in the repayment of the loan. A small portion of this loan category is related to loans secured by oil & gas production and loans secured by aircraft.

Construction and land development loans. This category includes the development of land from unimproved land to lot development for both residential and commercial use and vertical construction across residential and commercial real estate classes. These loans carry risk of repayment when projects incur cost overruns, have an increase in the price of construction materials, encounter zoning, entitlement and environmental issues, or encounter other factors that may affect the completion of a project on time and on budget. Additionally, repayment risk may be negatively impacted when the market experiences a deterioration in the value of real estate. Risks specifically related to 1-4 family development loans also include mortgage rate risk and the practice by the mortgage industry of more restrictive underwriting standards, which inhibits the buyer from obtaining long term financing creating excessive housing and lot inventory in the market.

Commercial real estate loans. This category includes loans secured by farmland, multifamily properties, owner occupied commercial properties, and non-owner occupied commercial properties.  Owner occupied commercial properties include warehouses often along the border for import/export operations, office space where the borrower is the primary tenant, restaurants and other single-tenant retail. Non-owner occupied commercial properties include hotels, retail centers, office and professional buildings, and leased warehouses. These loans carry risk of repayment when market values deteriorate, the business experiences turnover in key management, the business has an inability to attract or keep occupancy levels stable, or when the market experiences an exit of a specific business type that is significant to the local economy, such as a manufacturing plant.

1-4 family mortgages. This category includes both first and second lien mortgages for the purpose of home purchases or refinancing of existing mortgage loans. A small portion of this loan category is related to home equity lines of credits, lots purchases, and home construction.  Loan repayments may be affected by unemployment or underemployment and deteriorating market values of real estate.

Consumer loans. This category includes deposit secured, vehicle secured, and unsecured loans, including overdrafts, made to individuals. Repayment is primarily affected by unemployment or underemployment.

The loan pools are further broken down using a risk-based segmentation based on internal classifications for commercial loans and past due status for consumer mortgage loans.  Non-mortgage consumer loans are evaluated as one segment.  On a weekly basis, commercial loan past due reports are reviewed by the credit quality committee to determine if a loan has any potential problems and if a loan should be placed on our internal Watch List report. Additionally, our credit department reviews the majority of our loans for proper internal classification purposes regardless of whether they are past due and segregates any loans with potential problems for further review. The credit department will discuss the potential problem loans with the servicing loan officers to determine any relevant issues that were not discovered in the evaluation. Also, an analysis of loans that is provided through examinations by regulatory authorities is considered in the review process. After the above analysis is completed, we will determine if a loan should be placed on an internal Watch List report because of issues related to the analysis of the credit, credit documents, collateral and/or payment history.

Our internal Watch List report is segregated into the following categories: (i) Pass, (ii) Economic Monitoring, (iii) Special Review, (iv) Watch List—Pass, or (v) Watch List—Substandard, and (vi) Watch List—Doubtful.  The loans placed in the Special Review category and lower rated credits reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. Credits in those categories are reviewed and discussed on a regular basis, no less frequently than quarterly, with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Pass category and lower rated credits reflect our opinion that the credit

22

contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” Credits in this category are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Substandard category are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we may sustain some future loss if such weaknesses are not corrected. The loans placed in the Watch List—Doubtful category have shown defined weaknesses and it is likely, based on current information and events, that we will be unable to collect all principal and/or interest amounts contractually due.  Watch List—Doubtful loans are placed on non-accrual when they are moved to that category.  

For the purposes of the ACL, in order to maintain segments with sufficient history for meaningful results, the credits in the Pass and Economic Monitoring categories are aggregated, the credits in the Special Review and Watch List—Pass credits are aggregated, and the credits in the Watch List—Substandard category remain in their own segment.  For loans that are classified as Watch List—Doubtful, management evaluates these credits in accordance with ASC 310-10, “Receivables,” and, if deemed necessary, a specific reserve is allocated to the loan. The specific reserve allocated under ASC 310-10, is based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) net realizable value of the fair value of the collateral if the loan is collateral dependent. Substantially all of our loans evaluated as Watch List—Doubtful under ASC 310-10 are measured using the fair value of collateral method. In rare cases, we may use other methods to determine the specific reserve of a loan under ASC 310-10 if such loan is not collateral dependent.

Within each collectively evaluated pool, the robustness of the lifetime historical loss-rate is evaluated and, if needed, is supplemented with peer loss rates through a model risk adjustment.  Certain qualitative loss factors are then evaluated to incorporate management’s two-year reasonable and supportable forecast period followed by a reversion to the pool’s average lifetime loss-rate. Those qualitative loss factors are: (i) trends in portfolio volume and composition, (ii) volume and trends in classified loans, delinquencies, non-accruals and TDR’s, (iii) concentration risk, (iv) trends in underlying collateral value, (v) changes in policies, procedures, and strategies, and (vi) economic conditions.  Qualitative factors also include potential losses stemming from operational risk factors arising from fraud, natural disasters, pandemics and geopolitical events.  Should any of the factors considered by management in evaluating the adequacy of the ACL change, our estimate could also change, which could affect the level of future credit loss expense.

We have elected to not measure an ACL for accrued interest receivable given our timely approach in identifying and writing off uncollectible accrued interest.  An ACL for off-balance sheet exposure is derived from a projected usage rate of any unfunded commitment multiplied by the historical loss rate, plus model risk adjustment, if any, of the on-balance sheet loan pools.

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control, including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.

Recent Accounting Standards Issued

See Note 1—Summary of Significant Accounting Policies in the accompanying Notes to the Consolidated Financial Statements for details of recently issued and recently adopted accounting standards and their impact on our consolidated financial statements.

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Preferred Stock, Common Stock and Dividends

We have issued and outstanding 63,376,041 shares of $1.00 par value common stock held by approximately 1,830 holders of record at February 18, 2022. The book value of the common stock at December 31, 2021 was $38.17 per share compared with $36.14 per share at December 31, 2020.

Our common stock is traded on the NASDAQ National Market under the symbol “IBOC.” The following table sets forth the approximate high and low bid prices in our common stock during 2021 and 2020, as quoted on the NASDAQ National Market for each of the quarters in the two-year period ended December 31, 2021. Some of the quotations reflect inter-dealer prices, without retail mark-up, mark-down or commission and may not necessarily represent actual transactions. The closing sales price of our common stock was $42.45 per share at February 18, 2022.

		High		Low
2021:	First quarter	$	53.06	$	35.92
	Second quarter		50.40		42.86
	Third quarter		43.88		37.72
	Fourth quarter		46.67		39.26

		High		Low
2020:	First quarter	$	43.60	$	43.11
	Second quarter		35.22		23.35
	Third quarter		35.60		25.21
	Fourth quarter		38.73		25.44

We paid cash dividends of $.60 and $.55 per share on February 17 and September 3, 2021, respectively, to record holders of our common stock on February 5 and August 20, 2021, respectively.  We paid cash dividends of $0.55 per share on April 3 and October 5, 2020 to record holders of our common stock on April 1 and September 21, 2020.      

Our principal source of funds to pay cash dividends on our common stock is cash dividends from our Subsidiary Banks. For a discussion of the limitations, please see Note 19 of Notes to Consolidated Financial Statements.

Stock Repurchase Program

In April 2009, the Board of Directors re-established a formal stock repurchase program that authorized the repurchase of up to $40 million of common stock within the following 12 months. Annually since then, including on March 2, 2021, the Board of Directors extended the repurchase program to purchase up to $50 million of common stock during the 12 month period commencing on March 17, 2021. Shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. Shares purchased under this program will be held in treasury for reissue for various corporate purposes, including employee compensation plans. During the fourth quarter of 2021, the Board of Directors adopted a Rule 10b5-1 trading plan, and intends to adopt additional Rule 10b5-1 trading plans, that will allow us to purchase shares of our common stock during certain trading blackout periods when we ordinarily would not be in the market due to trading restrictions in our insider trading policy. During the term of a Rule 10b5-1 trading plan, purchases of common stock are automatic to the extent the conditions of the plan’s trading instructions are met. Shares purchased under the Rule 10b5-1 trading plan will be held in treasury for reissue for various corporate purposes, including employee stock compensation plans. As of February 18, 2022, a total of 12,285,386 shares had been repurchased under all programs at a cost of $357,771,000. We are not obligated to purchase shares under our stock repurchase program outside of its Rule 10b5-1 trading plan.

Except for repurchases in connection with the administration of an employee benefit plan in the ordinary course of business and consistent with past practices, common stock repurchases are only conducted under publicly announced repurchase programs approved by the Board of Directors. The following table includes information about common stock share repurchases for the quarter ended December 31, 2021.

24

				Total Number of
				Shares
				Purchased as	Approximate
		Average		Part of a	Dollar Value of
	Total Number	Price Paid		Publicly-	Shares Available
	of Shares	Per		Announced	for
	Purchased	Share		Program	Repurchase(1)
October 1 – October 31, 2021	—	$	—	—	$	49,343,000
November 1 – November 30, 2021	—		—	—		49,343,000
December 1 – December 31, 2021	272		42.21	—		49,332,000
Total	272	$	42.21	—

(1) The repurchase program was extended on March 2, 2021 and allows for the repurchase of up to an additional $50,000,000 of treasury stock through March 17, 2022.

Equity Compensation Plan Information

The following table sets forth information as of December 31, 2021, with respect to our equity compensation plans:

				(C)
				Number of securities
				remaining available for
	(A)	(B)		future issuance under
	Number of securities to	Weighted average		equity compensation
	be issued upon exercise	exercise price of		plans (excluding
	of outstanding options,	outstanding options,		securities reflected in
Plan Category	warrants and rights	warrants and rights		column A)
Equity Compensation plans approved by security holders	520,551	$	28.28	30,678	`
Total	520,551	$	28.28	30,678

25

Stock Performance

COMPARISON OF CUMULATIVE FIVE YEAR TOTAL RETURN

Total Return To Shareholders

(Includes reinvestment of dividends)

	Base	INDEXED RETURNS
	Period	December 31,
Company / Index	2016	2017	2018	2019	2020	2021
International Bancshares Corporation	100	99.04	87.37	112.42	101.73	118.53
S&P 400 Index	100	116.24	103.36	130.44	148.26	184.97
S&P 400 Banks	100	105.20	82.69	103.04	94.18	133.43

26

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors

of International Bancshares Corporation:

Opinion on the Financial Statements

We have audited the accompanying consolidated statements of condition of International Bancshares Corporation and its subsidiaries (the Company) as of December 31, 2021 and 2020, the related consolidated statements of income, comprehensive income, shareholders' equity and cash flows for each of the three years in the period ended December 31, 2021, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2021, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013, and our report dated February 24, 2022 expressed an unqualified opinion on the effectiveness of the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Allowance for Credit Losses

As described in Note 4 of the consolidated financial statements, the Company established an allowance for credit losses totaling $110,374,000 as of December 31, 2021. The allowance for credit losses is derived from a loss-rate methodology that measures lifetime losses on loan pools that have similar risk characteristics. Loans that do not have

27

similar risk characteristics are evaluated on an individual basis. The segmentation of the loan portfolio into pools requires a balancing process between capturing similar risk characteristics and sufficient loss history to provide relevant results. Loan pools are further broken down using a risk-based segmentation based on internal classifications of credit quality. Within each loan pool, the lifetime historical loss-rate is evaluated and, if needed, is supplemented with peer loss rates through a model risk adjustment. Certain qualitative factors are applied at the loan pool level to incorporate management’s two-year forecast period followed by a reversion to the pool’s average lifetime loss-rate. Those qualitative factors include: (i) trends in portfolio volume and composition, (ii) volume and trends in classified loans, delinquencies, non-accruals and troubled debt restructurings (TDR’s), (iii) concentration risk, (iv) trends in underlying collateral value, (v) changes in policies, procedures, and strategies, (vi) economic conditions, and (vii) operational and other risk factors to capture potential losses arising from fraud, natural disasters, pandemics, and geopolitical events.

We identified the qualitative factor component of the allowance for credit losses as a critical audit matter. Auditing management’s estimate of the qualitative factors required a high degree of auditor judgment due to the nature of the adjustments and the subjectivity in judgments applied by management in forming them.

Our audit procedures related to the Company’s qualitative factors included, the following, among others:

We obtained an understanding of the relevant controls related to the allowance for credit losses, including the qualitative factors, and tested such controls for design and operating effectiveness, including controls related to management’s review of the qualitative factors and approval of the allowance for credit losses calculation.

We evaluated the appropriateness and consistency of management’s methods and assumptions used to determine qualitative factors by (1) evaluating management’s identification and quantification of qualitative factors; (2) testing the completeness and accuracy of data and information used in calculating the components of the qualitative factors; (3) evaluating the reasonableness, directional consistency, and magnitude of the quantification of the qualitative factors; and (4) reviewing subsequent events and considering their impact on judgments applied in forming the qualitative factor component of the allowance for credit losses as of the consolidated balance sheet date.

/s/ RSM US LLP

We have served as the Company's auditor since 2007.

Austin, Texas

February 24, 2022

28

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Condition

December 31, 2021 and 2020

(Dollars in Thousands, Except Per Share Amounts)

	December 31,		December 31,
	2021		2020
Assets
Cash and cash equivalents	$	3,209,242	$	1,997,238
Investment securities:
Held to maturity debt securities (Market value of $3,400 on December 31, 2021 and $3,400 on December 31, 2020)		3,400		3,400
Available for sale debt securities (Amortized cost of $4,254,960 on December 31, 2021 and $3,054,289 on December 31, 2020)		4,213,920		3,080,768
Equity securities with readily determinable fair values		6,079		6,202
Total investment securities		4,223,399		3,090,370
Loans		7,209,151		7,541,754
Less allowance for credit losses		(110,374)		(109,059)
Net loans		7,098,777		7,432,695
Bank premises and equipment, net		447,082		479,878
Accrued interest receivable		30,593		37,881
Other investments		296,882		254,413
Cash surrender value of life insurance policies		297,218		292,381
Goodwill		282,532		282,532
Other assets		160,511		162,079
Total assets	$	16,046,236	$	14,029,467

See accompanying notes to consolidated financial statements.

29

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Condition Continued

December 31, 2021 and 2020

(Dollars in Thousands, Except Per Share Amounts)

	December 31,		December 31,
	2021		2020
Liabilities and Shareholders’ Equity
Liabilities:
Deposits:
Demand—non-interest bearing	$	5,838,526	$	4,715,814
Savings and interest bearing demand		4,590,548		3,852,505
Time		2,188,803		2,153,541
Total deposits		12,617,877		10,721,860
Securities sold under repurchase agreements		439,672		428,148
Other borrowed funds		436,138		436,327
Junior subordinated deferrable interest debentures		134,642		134,642
Other liabilities		109,426		130,492
Total liabilities		13,737,755		11,851,469
Shareholders’ equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,350,977 shares on December 31, 2021 and 96,240,977 shares on December 31, 2020		96,351		96,241
Surplus		152,144		149,334
Retained earnings		2,470,710		2,289,626
Accumulated other comprehensive (loss) income		(31,980)		20,825
		2,687,225		2,556,026
Less cost of shares in treasury, 32,979,273 shares on December 31, 2021 and 32,961,289 on December 31, 2020		(378,744)		(378,028)
Total shareholders’ equity		2,308,481		2,177,998
Total liabilities and shareholders’ equity	$	16,046,236	$	14,029,467

See accompanying notes to consolidated financial statements.

30

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Income

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands, Except Per Share Amounts)

	2021		2020		2019
Interest income:
Loans, including fees	$	359,215	$	377,579	$	413,611
Investment securities:
Taxable		34,331		46,095		72,485
Tax-exempt		1,483		2,434		4,885
Other interest income		3,074		900		1,420
Total interest income		398,103		427,008		492,401
Interest expense:
Savings deposits		4,110		6,358		16,379
Time deposits		11,655		19,230		20,970
Securities sold under repurchase agreements		621		926		2,432
Other borrowings		7,654		8,773		12,413
Junior subordinated deferrable interest debentures		2,791		3,832		6,435
Total interest expense		26,831		39,119		58,629
Net interest income		371,272		387,889		433,772
Provision for credit losses		7,955		45,379		18,843
Net interest income after provision for credit losses		363,317		342,510		414,929
Non-interest income:
Service charges on deposit accounts		66,205		61,983		72,502
Other service charges, commissions and fees
Banking		54,280		48,986		50,996
Non-banking		8,007		7,822		7,832
Investment securities transactions, net		(16)		(5)		(12)
Other investments, net		68,807		4,920		5,985
Other income		25,043		26,873		17,523
Total non-interest income	$	222,326	$	150,579	$	154,826

See accompanying notes to consolidated financial statements.

31

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Income, continued

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands, Except Per Share Amounts)

	2021		2020		2019
Non-interest expense:
Employee compensation and benefits	$	123,480	$	130,039	$	145,929
Occupancy		26,176		24,909		28,635
Depreciation of bank premises and equipment		25,028		28,318		28,270
Professional fees		7,890		12,546		17,661
Deposit insurance assessments		4,389		1,870		1,416
Net expense, other real estate owned		5,073		9,808		6,377
Advertising		4,037		4,284		7,748
Software and software maintenance		17,794		19,238		19,850
Other		49,449		50,319		53,915
Total non-interest expense		263,316		281,331		309,801
Income before income taxes		322,327		211,758		259,954
Provision for income taxes		68,405		44,439		54,850
Net income	$	253,922	$	167,319	$	205,104
Basic earnings per common share:
Weighted average number of shares outstanding		63,352,737		63,725,819		65,476,606
Net income	$	4.01	$	2.63	$	3.13
Fully diluted earnings per common share:
Weighted average number of shares outstanding		63,486,366		63,853,135		65,685,684
Net income	$	4.00	$	2.62	$	3.12

See accompanying notes to consolidated financial statements.

32

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

Years ended December 31, 2021, 2020, and 2019

(Dollars in Thousands)

	2021		2020		2019
Net income	$	253,922	$	167,319	$	205,104
Other comprehensive (loss) income, net of tax:
Net unrealized holding (losses) gains on securities available for sale arising during period (net of tax effects of $(14,040), $4,911 and $15,144)		(52,818)		18,476		56,970
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $3, $1 and $3)		13		4		9
		(52,805)		18,480		56,979
Comprehensive (loss) income	$	201,117	$	185,799	$	262,083

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Shareholders’ Equity

Years ended December 31, 2021, 2020 and 2019

(in Thousands, except per share amounts)

			Number							Other
	Preferred		of	Common				Retained		Comprehensive		Treasury
	Stock		Shares	Stock		Surplus		Earnings		Income (Loss)		Stock		Total
Balance at December 31, 2018	$	—	96,104		96,104		145,283		2,064,134		(54,634)		(311,305)	$	1,939,582
Net Income		—	—		—		—		205,104		—		—		205,104
Dividends:
Cash ($1.05 per share)		—	—		—		—		(68,670)		—		—		(68,670)
Purchase of treasury (468,918 shares)		—	—		—		—		—		—		(17,845)		(17,845)
Exercise of stock options		—	111		111		1,812		—		—		—		1,923
Stock compensation expense recognized in earnings		—	—		—		980		—		—		—		980
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustment		—	—		—		—		—		56,979		—		56,979
Balance at December 31, 2019		—	96,215		96,215		148,075		2,200,568		2,345		(329,150)		2,118,053
Net Income		—	—		—		—		167,319		—		—		167,319
Dividends:
Cash ($1.10 per share)		—	—		—		—		(69,928)		—		—		(69,928)
Purchase of treasury (1,946,228 shares)		—	—		—		—		—		—		(48,878)		(48,878)
Exercise of stock options		—	26		26		516		—		—		—		542
Stock compensation expense recognized in earnings		—	—		—		743		—		—		—		743
Cumulative adjustment for adoption of new accounting standards		—	—		—		—		(8,333)		—		—		(8,333)
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments		—	—		—		—		—		18,480		—		18,480
Balance at December 31, 2020		—	96,241	$	96,241	$	149,334	$	2,289,626	$	20,825	$	(378,028)	$	2,177,998
Net Income		—	—		—		—		253,922		—		—		253,922
Dividends:
Cash ($1.15 per share)		—	—		—		—		(72,838)		—		—		(72,838)
Purchase of treasury (17,984 shares)		—	—		—		—		—		—		(716)		(716)
Exercise of stock options		—	110		110		2,304		—		—		—		2,414
Stock compensation expense recognized in earnings		—	—		—		506		—		—		—		506
Other comprehensive loss, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments		—	—		—		—		—		(52,805)		—		(52,805)
Balance at December 31, 2021		—	96,351	$	96,351	$	152,144	$	2,470,710	$	(31,980)	$	(378,744)	$	2,308,481

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Operating activities:
Net income	$	253,922	$	167,319	$	205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss		7,955		45,379		18,843
Specific reserve, other real estate owned		2,655		1,539		322
Depreciation of bank premises and equipment		25,028		28,318		28,270
Loss (gain) on sale of bank premises and equipment		601		(40)		(237)
Gain on sale of other real estate owned		(170)		(892)		(1,470)
Accretion of investment securities discounts		(702)		(500)		(428)
Amortization of investment securities premiums		36,380		39,039		20,549
Investment securities transactions, net		16		5		12
Unrealized loss (gain) on equity securities with readily determinable fair values		123		(107)		(158)
Proceeds from settlements of claims		2,870		—		—
Stock based compensation expense		506		743		980
(Earnings) losses from affiliates and other investments		(68,034)		74		(3,914)
Deferred income taxes		3,542		(3,122)		3,309
Decrease (increase) in accrued interest receivable		7,288		(1,261)		183
Decrease in other assets		25,220		42,571		8,043
Increase in other liabilities		(5,519)		(13,932)		32,157
Net cash provided by operating activities		291,681		305,133		311,565
Investing activities:
Proceeds from maturities of securities		1,200		1,075		—
Proceeds from sales and calls of available for sale securities		5,890		42,350		94,585
Purchases of available for sale securities		(2,856,135)		(1,819,814)		(893,301)
Principal collected on mortgage backed securities		1,612,679		2,058,626		882,479
Net decrease (increase) in loans		309,575		(647,213)		(375,621)
Purchases of other investments		(61,783)		(44,447)		(52,795)
Distributions from other investments		63,356		64,860		44,919
Purchases of bank premises and equipment		(10,390)		(6,725)		(29,590)
Proceeds from sales of bank premises and equipment		11,446		904		1,861
Proceeds from sales of other real estate owned		8,273		6,679		9,405
Net cash used in investing activities	$	(915,889)	$	(343,705)	$	(318,058)

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows (Continued)

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Financing activities:
Net increase in non-interest bearing demand deposits	$	1,122,712	$	1,169,909	$	91,065
Net increase (decrease) in savings and interest bearing demand deposits		738,043		584,676		(408)
Net increase in time deposits		35,262		141,241		38,832
Net increase in securities sold under repurchase agreements		11,524		191,612		6,547
Net decrease in other borrowed funds		(189)		(190,184)		(79,154)
Redemption of long-term debt		—		—		(25,774)
Purchase of treasury stock		(716)		(48,878)		(17,845)
Proceeds from stock transactions		2,414		542		1,923
Payments of cash dividends		(72,838)		(69,928)		(68,670)
Net cash provided by (used in) financing activities		1,836,212		1,778,990		(53,484)
Increase (decrease) in cash and cash equivalents		1,212,004		1,740,418		(59,977)
Cash and cash equivalents at beginning of period		1,997,238		256,820		316,797
Cash and cash equivalents at end of period	$	3,209,242	$	1,997,238	$	256,820
Supplemental cash flow information:
Interest paid	$	29,007	$	41,975	$	56,728
Income taxes paid		47,394		34,826		44,089
Non-cash investing and financing activities:
Net transfers from loans to other real estate owned	$	16,388	$	4,526	$	22,015
Establishment of lease liability and right-of-use asset		—		—		6,171
Net transfers from bank premises and equipment to other assets		—		4,260		—

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements

(1) Summary of Significant Accounting Policies

Our accounting and reporting policies conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The following is a description of the more significant of those policies.

Consolidation and Basis of Presentation

Our consolidated financial statements include the accounts of the International Bancshares Corporation, its wholly-owned Subsidiary Banks and its wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, IBC Capital Corporation and Diamond Beach Holdings, LLC.  All significant inter-company balances and transactions have been eliminated in consolidation.

We, through our Subsidiary Banks, are primarily engaged in the business of banking, including the acceptance of checking and savings deposits and the making of commercial, real estate, personal, home improvement, automobile and other installment and term loans. Our primary markets are north, south, central, and southeast Texas and the state of Oklahoma. Each of our Subsidiary Banks is very active in facilitating international trade along the United States border with Mexico and elsewhere. Although our loan portfolio is diversified, the ability of our debtors to honor their contracts is primarily dependent upon the economic conditions in our trade area. In addition, the investment portfolio is directly impacted by fluctuations in market interest rates. We are subject to the regulations of certain federal agencies as well as the Texas Department of Banking and the Oklahoma Department of Banking and undergo periodic examinations by those regulatory authorities. Such agencies may require certain standards or impose certain limitations based on their judgments or changes in law and regulations.

We own one insurance-related subsidiary, IBC Insurance Agency, Inc., a wholly owned subsidiary of our Subsidiary Bank, International Bank of Commerce, Laredo. The insurance-related subsidiary does not conduct underwriting activities.

The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the statement of condition and income and expenses for the periods. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the allowance for credit losses (“ACL”).

Subsequent Events

We have evaluated all events or transactions that occurred through the date we issued these financial statements. During this period, we did not have any material recognizable or non-recognizable subsequent events.

Investment Securities

We classify debt securities into one of these categories: held-to-maturity, available-for-sale, or trading. Such classifications are reassessed for appropriate classification at each reporting date. Securities that are intended and expected to be held until maturity are classified as “held-to-maturity” and are carried at amortized cost for financial statement reporting. Securities that are not positively expected to be held until maturity, but are intended to be held for an indefinite period of time are classified as “available-for-sale” or “trading” and are carried at their fair value. Unrealized holding gains and losses are included in net income for those securities classified as “trading”, while unrealized holding gains and losses related to those securities classified as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income (loss) and in shareholders’ equity as accumulated other comprehensive income (loss) until realized. Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income.  In accordance with ASU 2016-13, which we adopted on January 1, 2020, available-for-sale and held-to-maturity debt securities in an unrealized loss position must be evaluated for the underlying cause of the loss.  In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment would be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

our ACL.  The exception to this process will occur if we intend to sell an impaired available-for-sale debt security or if we will more likely than not be required to sell a credit impaired available-for-sale debt security prior to the value recovering to the security’s amortized cost.  In those situations, the entire credit-related impairment amount would be required to be recognized in earnings.  We have evaluated the debt securities classified as available-for-sale and held-to-maturity at December 31, 2021 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the periods.  We did not maintain any trading securities during the three-year period ended December 31, 2021.

Mortgage-backed securities held at December 31, 2021 and 2020 represent participating interests in pools of long-term first mortgage loans originated and serviced by the issuers of the securities. Mortgage-backed securities are either issued or guaranteed by the U.S. government or its agencies including Freddie Mac, Fannie Mae, Ginnie Mae or other non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U. S. government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities. Market interest rate fluctuations can affect the prepayment speed of principal and the yield on the security.

Premiums and discounts are amortized using the level yield or “interest method” over the terms of the securities. Declines in the fair value of held-to-maturity and available-for sale-securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In determining whether other-than-temporary impairment exists, management considers many factors, including (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) our intent to hold and our determination of whether we will more likely than not be required to sell the security prior to a recovery in fair value. If we determine that (i) we intend to sell the security or (ii) it is more likely than not that we will be required to sell the security before it’s anticipated recovery, the other-than-temporary impairment that is recognized in earnings is equal to the difference between the fair value of the security and our amortized cost of the security. If we determine that we (i) do not intend to sell the security and (ii) we will not be more likely than not required to sell the security before it’s anticipated recovery, the other-than-temporary impairment is segregated into its two components (i) the amount of impairment related to credit loss and (ii) the amount of impairment related to other factors. The difference between the present value of the cash flows expected to be collected and the amortized cost is the credit loss recognized through earnings and an adjustment to the cost basis of the security. The amount of impairment related to other factors is included in other comprehensive income (loss). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.

Equity Securities

Equity securities with readily determinable fair values at December 31, 2021 and December 31, 2020 consist primarily of Community Reinvestment Act funds.  Unrealized gains and losses on the equity securities are recognized in net income.

Provision and Allowance for Credit Losses

We adopted the provisions of Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” on January 1, 2020.  ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset.  Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions.  The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset.  Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense.  Loan losses or recoveries are charged or credited directly to the ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.  

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control, including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.  We believe that the allowance for probable loan losses is adequate.

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial, financial and agricultural or real estate loans are generally considered by management to represent a loss, in whole or part, (i) when an exposure beyond any collateral coverage is apparent, (ii) when no further collection of the portion of the loan so exposed is anticipated based on actual results, (iii) when the credit enhancements, if any, are not adequate, and (iv) when the borrower’s financial condition would indicate so. Generally, unsecured consumer loans are charged-off when 90 days past due.

Loans

Loans are reported at the principal balance outstanding, net of unearned discounts. Interest income on loans is reported on an accrual basis. Loan fees and costs associated with originating the loans are accreted or amortized over the life of the loan using the interest method. We originate mortgage loans that may subsequently be sold to an unaffiliated third party. The loans are not securitized and if sold, are sold without recourse. Loans held for sale are carried at cost and the principal amount outstanding is not significant to the consolidated financial statements.

Doubtful Loans

Doubtful loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. Doubtful loans are measured based on (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price; or (3) the fair value of the collateral if the loan is collateral dependent. Substantially all our doubtful loans are measured at the fair value of the collateral. In limited cases, we may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

39

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Troubled Debt Restructured Loans

Troubled debt restructured loans (“TDR”) are those loans where, for reasons related to a borrower’s difficulty to repay a loan, we grant a concession to the borrower that we would not normally consider in the normal course of business. In accordance with interagency guidance issued in March 2020, certain short-term deferrals are not considered troubled debt restructurings. The original terms of the loan are modified or restructured. The terms that may be modified include a reduction in the original stated interest rate, an extension of the original maturity of the loan, a renewal of the loan at an interest rate below current market rates, a reduction in the principal amount of debt outstanding, a reduction in accrued interest or deferral of interest payments. A loan classified as a TDR is classified as a doubtful loan and included in the doubtful loan totals. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the restructured terms for a reasonable period of time, is at the current market rate, and the ultimate collectability of the outstanding principal and interest is no longer questionable, however, although those loans may be placed back on accrual status, they will continue to be classified as doubtful. Consistent with regulatory guidance, a TDR loan that is subsequently modified, but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

Non-Accrual Loans

The non-accrual loan policy of our Subsidiary Banks is to discontinue the accrual of interest on loans when management determines that it is probable that future interest accruals will be un-collectible. As it relates to consumer loans, management charges-off those loans when the loan is contractually 90 days past due. Under special circumstances, a consumer or non-consumer loan may be more than 90 days delinquent as to interest or principal and not be placed on non-accrual status. This situation generally results when a Subsidiary Bank has a borrower who is experiencing financial difficulties, but not to the extent that requires a restructuring of indebtedness. The majority of this category is composed of loans that are considered to be adequately secured and/or for which there are expected future payments. When a loan is placed on non-accrual status, any interest accrued, not paid is reversed and charged to operations against interest income. As it relates to non-consumer loans that are not 90 days past due, management will evaluate each of these loans to determine if placing the loan on non-accrual status is warranted. Interest income on non-accrual loans is recognized only to the extent payments are received or when, in management’s opinion, the debtor’s financial condition warrants reestablishment of interest accruals.

Other Real Estate Owned and Repossessed Assets

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal). Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL, if necessary. Any subsequent write-downs are charged against other non-interest expense through a valuation allowance. Other real estate owned totaled approximately $35,332,000 and $60,487,000 at December 31, 2021 and 2020, respectively. Other real estate owned is included in other assets.  Repossessed assets consist primarily of non-real estate assets acquired by foreclosure.  Prior to foreclosure, the value of the underlying loan is written down to the fair value of the asset to be repossessed by a charge to the ACL, if necessary.  Repossessed assets are included in other assets on the consolidated financial statements and totaled approximately $4,798,000 and $5,779,000 at December 31, 2021 and 2020, respectively.

Bank Premises and Equipment

Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on straight-line and accelerated methods over the estimated useful lives of the assets. Repairs and maintenance are charged to operations as incurred and expenditures for renewals and betterments are capitalized.   We primarily own all the property we occupy, with the exception of certain branches operating in grocery store or retail shopping centers and certain ATM locations, which are all under operating leases as classified under guidance prior to the issuance of ASU 2016-02, “Leases.”  

40

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Other Investments

Other investments include equity investments in non-financial companies, as well as equity securities with no readily determinable fair market value. Equity investments are accounted for using the equity method of accounting. Equity securities with no readily determinable fair value are accounted for using the cost method.

Revenue Recognition

Our revenue is primarily comprised of net interest income on financial assets and liabilities, which are excluded from the scope of ASU No. 2014-09 to ASC 606, “Revenue from Contracts with Customers.” The remaining non-interest revenue streams were identified and then analyzed under the provisions of the update, to:  (i) identify the contract, (ii) identify the performance obligation, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations, and (v) recognize revenue when the performance obligation was satisfied.  Our non-interest revenue contracts with customers are primarily short term and our performance obligation is satisfied at a single point in time, typically within a single period.  No changes to our existing methods for recognizing revenue were made as a result of the accounting standards update.

Income Taxes

Deferred income tax assets and liabilities are determined using the asset and liability method. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the differences between the book and tax basis of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. We file a consolidated federal income tax return with our subsidiaries.

Recognition of deferred tax assets is based on management’s assessment that the benefit related to certain temporary differences, tax operating loss carry forwards, and tax credits are more likely than not to be realized. A valuation allowance is recorded for the amount of the deferred tax items for which it is more likely than not that the tax benefits will not be realized.

We evaluate uncertain tax positions at the end of each reporting period. We may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. As of December 31, 2021 and 2020, respectively, after evaluating all uncertain tax positions, we have recorded no liability for unrecognized tax benefits at the end of the reporting period. We would recognize any interest accrued on unrecognized tax benefits as other interest expense and penalties as other non-interest expense. During the years ended December 31, 2021, 2020 and 2019, we recognized no interest expense or penalties related to uncertain tax positions.

We file consolidated tax returns in the U.S. Federal jurisdiction and various state jurisdictions. We are no longer subject to U.S. federal or state income tax examinations by tax authorities for years before 2018.

Stock Options

Compensation expense for stock awards is based on the market price of the stock on the measurement date, which is generally the date of grant, and is recognized ratably over the service period of the award. The fair value of stock options granted was estimated using the Black-Sholes-Merton option-pricing model. This model was developed for use in estimating the fair value of publicly traded options that have no vesting restrictions and are fully transferable. Additionally, the model requires the input of highly subjective assumptions. Because our employee stock options have characteristics significantly different from those of publicly traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the Black-Scholes-Merton option-pricing model does not necessarily provide a reliable single measure of the fair value of our stock options.

41

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Net Income Per Share

Basic Earnings Per Share (“EPS”) is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares outstanding during the reporting period. The dilutive effect of stock options is considered in earnings per share calculations, if dilutive, using the treasury stock method.

Goodwill and Identified Intangible Assets

Goodwill represents the excess of costs over fair value of assets of businesses acquired. Goodwill is tested for impairment at least annually or on an interim basis if an event triggering impairment may have occurred. As of October 1, 2021, after completing goodwill testing, we have determined that no goodwill impairment exists.

Identified intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Our identified intangible assets relate to core deposits and contract rights. As of December 31, 2021, we have determined that no impairment of identified intangibles exists. Identified intangible assets with definite useful lives are amortized on an accelerated basis over their estimated life. See Note 6—Goodwill and Other Intangible Assets.

Impairment of Long-Lived Assets

Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the statement of condition and reported at the lower of the carrying value or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the statement of condition.

Consolidated Statements of Cash Flows

For purposes of the consolidated statements of cash flows, we consider all short-term investments with a maturity at date of purchase of three months or less to be cash equivalents. Also, we report transactions related to deposits and loans to customers on a net basis.

Accounting for Transfers and Servicing of Financial Assets

We account for transfers and servicing of financial assets and extinguishments of liabilities based on the application of a financial-components approach that focuses on control. After a transfer of financial assets, we recognize the financial and servicing assets we control and liabilities we have incurred, derecognize financial assets when control has been surrendered and derecognize liabilities when extinguished. We have retained mortgage servicing rights in connection with the sale of mortgage loans. Because we may not initially identify loans as originated for resale, all loans are initially treated as held for investment. The value of the mortgage servicing rights are reviewed periodically for impairment and are amortized in proportion to, and over the period of estimated net servicing income or net servicing losses. The value of the mortgage servicing rights is not significant to the consolidated statements of condition.

Segments of an Enterprise and Related Information

We operate as one segment. The operating information used by our chief executive officer for purposes of assessing performance and making operating decisions is the consolidated financial statements presented in this report.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

We have five active operating subsidiaries, namely, the Subsidiary Banks. We apply the provisions of ASC Topic 280, “Segment Reporting,” in determining our reportable segments and related disclosures.

Comprehensive Income (Loss)

Comprehensive income (loss) consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale.

Advertising

Advertising costs are expensed as incurred.

Reclassifications

Certain amounts in the prior year’s presentations have been reclassified to conform to the current presentation. These reclassifications had no effect on previously reported net income or shareholders’ equity.

New Accounting Standards

In June 2016, the FASB issued Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses.” The update amends existing standards for accounting for credit losses for financial assets. The update requires that the expected credit losses on the financial instruments held as of the end of the period being reported be measured based on historical experience, current conditions, and reasonable and supportable forecasts. The update also expands the required disclosures related to significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s financial assets. The update also amended the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The impact of the adoption of the standard is to be recorded as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The accounting standard was effective for us on January 1, 2020. The task force formed last year, which includes key members of the teams that work with the calculation of the allowance for probable loan losses plus members representing the corporate accounting and risk management areas, has worked with the implementation of the update and validation to complete our model/tool. Based on the composition of the portfolio at December 31, 2019 and after finalizing the methodology, the adoption of the update increased our allowance for probable loan losses (referred to as the ACL under ASU 2016-13), by approximately 17.2%, resulting in a cumulative-effect adjustment to retained earnings of approximately $8.3 million, net of tax.  Please refer to Note 4 – Allowance for Credit Losses and the Critical Accounting Policies discussion in Management’s Discussion and Analysis.  

In December 2019, the FASB issued Accounting Standards Update No. 2019-12, to ASC 740, “Income Taxes.”  The update amends existing guidance with the intention of simplifying the accounting for income taxes.  Specifically, the update removes some exceptions in existing guidance around intraperiod tax allocations, recognition of deferred tax liabilities for certain changes in investments in foreign subsidiaries and to the general methodology for calculating taxes on interim periods when year to date losses exceed the anticipated loss for the year.  Additionally, the update clarifies and provides more guidance with respect to the classification of franchise or similar taxes, requirements to evaluate when a step up in the tax basis of goodwill should be considered, eliminates the requirement that a consolidated entity allocate a portion of current and deferred tax expense to a legal entity that is not subject to tax, requires that an entity reflect the effect of changes in tax laws and tax rates in the effective tax rate computed in the interim period that includes the enactment date and makes minor changes for taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method.  The update is effective for fiscal years beginning after December 15, 2020.  The adoption of the update did not have a significant impact on our consolidated financial statements.  

In March 2020, the FASB issued Accounting Standards Update No. 2020-04, “Reference Rate Reform (Topic 848):  Facilitation of the Effects of Reference Rate Reform on Financial Reporting.”  The update provides optional guidance for a limited period of time to ease the potential burden in accounting for and recognizing the effects of reference

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

rate reform on financial reporting.  The practical expedients and exceptions in the update apply only to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met.  The update does not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022 that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.  

In January 2021, the FASB issued Accounting Standards Update No. 2021-01, “Reference Rate Reform (Topic 848): Scope.”  The update clarifies the applicability of the practical expedients and exceptions issued in ASU 2020-04 to derivative instruments that use an interest rate for margining, discounting or contract price alignment that is modified as a result of reference rate reform.  The update is intended to capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.    

(2) Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments

In accordance with ASU 2016-13, which we adopted on January 1, 2020, available-for-sale and held-to-maturity debt securities in an unrealized loss position must be evaluated for the underlying cause of the loss.  In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment would be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through our ACL.  The exception to this process will occur if we intend to sell an impaired available-for-sale debt security or if we will more likely than not be required to sell a credit impaired available-for-sale debt security prior to the value recovering to the security’s amortized cost.  In those situations, the entire credit-related impairment amount would be required to be recognized in earnings.  We have evaluated the debt securities classified as available-for-sale and held-to-maturity at December 31, 2021 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the period.  Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income.

The amortized cost and estimated fair value by type of investment security at December 31, 2021 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale Debt Securities
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	4,213,441	$	14,159	$	(58,237)	$	4,169,363	$	4,169,363
Obligations of states and political subdivisions		41,519		3,038		—		44,557		44,557
Total investment securities	$	4,254,960	$	17,197	$	(58,237)	$	4,213,920	$	4,213,920

(1) Included in the carrying value of residential mortgage- backed securities are $824,474 of mortgage-backed securities issued by Ginnie Mae and $3,344,889 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

44

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

The amortized cost and estimated fair value of investment securities at December 31, 2021, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	Held to Maturity				Available for Sale
	Amortized		Estimated		Amortized		Estimated
	Cost		fair value		Cost		fair value
	(Dollars in Thousands)
Due in one year or less	$	2,200	$	2,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		—		—
Due after ten years		—		—		41,519		44,557
Residential mortgage-backed securities		—		—		4,213,441		4,169,363
Total investment securities	$	3,400	$	3,400	$	4,254,960	$	4,213,920

The amortized cost and estimated fair value by type of investment security at December 31, 2020 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,006,592	$	32,701	$	(9,339)	$	3,029,954	$	3,029,954
Obligations of states and political subdivisions		47,697		3,131		(14)		50,814		50,814
Total investment securities	$	3,054,289	$	35,832	$	(9,353)	$	3,080,768	$	3,080,768

(1) Included in the carrying value of residential mortgage- backed securities are $371,407 of mortgage-backed securities issued by Ginnie Mae, $2,658,247 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

Residential mortgage-backed securities are securities issued by Freddie Mac, Fannie Mae, Ginnie Mae or non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. government. Investments in mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in early September 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae and Freddie Mac are rated consistently as AAA rated securities.

The amortized cost and fair value of available for sale investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $1,519,652,000 and $1,497,929,000, respectively, at December 31, 2021.

Proceeds from the sale and call of securities available-for-sale were $5,890,000, $42,350,000 and $94,585,000 during 2021, 2020 and 2019, respectively, which amounts included $0, $0 and $0 of mortgage-backed securities. Gross gains of $0, $1,000 and $3,000, and gross losses of $16,000, $6,000 and $15,000 were realized on the sales and calls in 2021, 2020 and 2019, respectively.

45

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)
	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous loss position, at December 31, 2020 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	1,462,232	$	(9,339)	$	—	$	—	$	1,462,232	$	(9,339)
Obligations of states and political subdivisions		—		—		757		(14)		757		(14)
	$	1,462,232	$	(9,339)	$	757	$	(14)	$	1,462,989	$	(9,353)

The unrealized losses on investments in residential mortgage-backed securities are primarily caused by changes in market interest rates. We have no intent to sell and more likely than not be required to sell before a market price recovery or maturity of the securities; therefore, it is our conclusion that the investments in residential mortgage-backed securities issued by Freddie Mac, Fannie Mae and Ginnie Mae are not considered other-than-temporarily impaired.

Equity securities with readily determinable fair values consist primarily of Community Reinvestment Act funds. At December 31, 2021 and December 31, 2020, the balance in equity securities with readily determinable fair values recorded at fair value were $6,079,000 and $6,202,000, respectively. The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities for the twelve months ended December 31, 2021, 2020 and 2019:

	Year Ended
	December 31, 2021
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	(123)
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	(123)

46

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

	Year Ended
	December 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	107
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	107

	Year Ended
	December 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	158
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	158

Other investments include equity and merchant banking investments held by our subsidiary banks and non-banking entities. During the second quarter of 2021, one of our non-bank subsidiaries sold an equity interest in a merchant banking investment resulting in a gain on sale included in other investment income on the consolidated statements of income.

(3) Loans

A summary of loans, by loan type at December 31, 2021 and 2020 is as follows:

	December 31,		December 31,
	2021		2020
	(Dollars in Thousands)
Commercial, financial and agricultural	$	4,497,444	$	4,516,288
Real estate - mortgage		867,831		999,144
Real estate - construction		1,668,113		1,846,757
Consumer		40,966		40,595
Foreign		134,797		138,970
Total loans	$	7,209,151	$	7,541,754

(4) Allowance for Credit Losses

We adopted the provisions of ASU 2016-13 on January 1, 2020 on a modified retrospective basis. Results and information regarding our ACL included in this Note are calculated and presented in accordance with that accounting standards update. Results and information prior to January 1, 2020 are calculated and presented in accordance with previously applicable U.S. GAAP.

ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset. Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions. The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset. Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense. Loan losses or recoveries are charged or credited directly to the

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.

The estimation of the ACL is based on a loss-rate methodology that measures lifetime losses on loan pools that have similar risk characteristics. Loans that do not have similar risk characteristics are evaluated on an individual basis. The segmentation of the loan portfolio into pools requires a balancing process between capturing similar risk characteristics and containing sufficient loss history to provide meaningful results.  Our segmentation starts at the general loan category with further sub-segmentation based on collateral types that may be of meaningful size and/or may contain sufficient differences in risk characteristics based on management’s judgement that would warrant further segmentation. The general loan categories along with primary risk characteristics used in our calculation are as follows:

Commercial and industrial loans. This category includes loans extended to a diverse array of businesses for working capital or equipment purchases. These loans are mostly secured by the collateral pledged by the borrower that is directly related to the business activities of the company such as equipment, accounts receivable and inventory. The borrower’s abilities to generate revenues from equipment purchases, collect accounts receivable, and to turn inventory into sales are risk factors in the repayment of the loan. A small portion of this loan category is related to loans secured by oil & gas production and loans secured by aircraft.

Construction and land development loans. This category includes the development of land from unimproved land to lot development for both residential and commercial use and vertical construction across residential and commercial real estate classes. These loans carry risk of repayment when projects incur cost overruns, have an increase in the price of construction materials, encounter zoning, entitlement and environmental issues, or encounter other factors that may affect the completion of a project on time and on budget. Additionally, repayment risk may be negatively impacted when the market experiences a deterioration in the value of real estate. Risks specifically related to 1-4 family development loans also include mortgage rate risk and the practice by the mortgage industry of more restrictive underwriting standards, which inhibits the buyer from obtaining long term financing creating excessive housing and lot inventory in the market.

Commercial real estate loans. This category includes loans secured by farmland, multifamily properties, owner occupied commercial properties, and non-owner occupied commercial properties.  Owner occupied commercial properties include warehouses often along the border for import/export operations, office space where the borrower is the primary tenant, restaurants and other single-tenant retail. Non-owner occupied commercial properties include hotels, retail centers, office and professional buildings, and leased warehouses. These loans carry risk of repayment when market values deteriorate, the business experiences turnover in key management, the business has an inability to attract or keep occupancy levels stable, or when the market experiences an exit of a specific business type that is significant to the local economy, such as a manufacturing plant.

1-4 family mortgages. This category includes both first and second lien mortgages for the purpose of home purchases or refinancing of existing mortgage loans. A small portion of this loan category is related to home equity lines of credits, lots purchases, and home construction.  Loan repayments may be affected by unemployment or underemployment and deteriorating market values of real estate.

Consumer loans. This category includes deposit secured, vehicle secured, and unsecured loans, including overdrafts, made to individuals. Repayment is primarily affected by unemployment or underemployment.

The loan pools are further broken down using a risk-based segmentation based on internal classifications for commercial loans and past due status for consumer mortgage loans.  Non-mortgage consumer loans are evaluated as one segment.  On a weekly basis, commercial loan past due reports are reviewed by the credit quality committee to determine if a loan has any potential problems and if a loan should be placed on our internal Watch List report. Additionally, our credit department reviews the majority of our loans for proper internal classification purposes regardless of whether they are past due and segregates any loans with potential problems for further review. The credit department will discuss the potential problem loans with the servicing loan officers to determine any relevant issues that were not discovered in the evaluation. Also, an analysis of loans that is provided through examinations by regulatory authorities is considered in the

48

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

review process. After the above analysis is completed, we will determine if a loan should be placed on an internal Watch List report because of issues related to the analysis of the credit, credit documents, collateral and/or payment history.

Our internal Watch List report is segregated into the following categories: (i) Pass, (ii) Economic Monitoring, (iii) Special Review, (iv) Watch List—Pass, or (v) Watch List—Substandard, and (vi) Watch List—Doubtful.  The loans placed in the Special Review category and lower rated credits reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. Credits in those categories are reviewed and discussed on a regular basis, no less frequently than quarterly, with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Pass category and lower rated credits reflect our opinion that the credit contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” Credits in this category are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Substandard category are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we may sustain some future loss if such weaknesses are not corrected. The loans placed in the Watch List—Doubtful category have shown defined weaknesses and it is likely, based on current information and events, that we will be unable to collect all principal and/or interest amounts contractually due.  Watch List—Doubtful loans are placed on non-accrual when they are moved to that category.  

For the purposes of the ACL, in order to maintain segments with sufficient history for meaningful results, the credits in the Pass and Economic Monitoring categories are aggregated, the credits in the Special Review and Watch List—Pass credits are aggregated, and the credits in the Watch List—Substandard category remain in their own segment.  For loans that are classified as Watch List—Doubtful, management evaluates these credits in accordance with ASC 310-10, “Receivables,” and, if deemed necessary, a specific reserve is allocated to the loan. The specific reserve allocated under ASC 310-10, is based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) net realizable value of the fair value of the collateral if the loan is collateral dependent. Substantially all of our loans evaluated as Watch List—Doubtful under ASC 310-10 are measured using the fair value of collateral method. In rare cases, we may use other methods to determine the specific reserve of a loan under ASC 310-10 if such loan is not collateral dependent.

Within each collectively evaluated pool, the robustness of the lifetime historical loss-rate is evaluated and, if needed, is supplemented with peer loss rates through a model risk adjustment.  Certain qualitative loss factors are then evaluated to incorporate management’s two-year reasonable and supportable forecast period followed by a reversion to the pool’s average lifetime loss-rate. Those qualitative loss factors are: (i) trends in portfolio volume and composition, (ii) volume and trends in classified loans, delinquencies, non-accruals and TDR’s, (iii) concentration risk, (iv) trends in underlying collateral value, (v) changes in policies, procedures, and strategies, and (vi) economic conditions.  Qualitative factors also include potential losses stemming from operational risk factors arising from fraud, natural disasters, pandemics and geopolitical events.  Should any of the factors considered by management in evaluating the adequacy of the ACL change, our estimate could also change, which could affect the level of future credit loss expense.

We have elected to not measure an ACL for accrued interest receivable given our timely approach in identifying and writing off uncollectible accrued interest.  An ACL for off-balance sheet exposure is derived from a projected usage rate of any unfunded commitment multiplied by the historical loss rate, plus model risk adjustment, if any, of the on-balance sheet loan pools.

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control,

49

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.

A summary of the changes in the allowance for probable loan losses by loan class is as follows:

	December 31, 2021
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059
Losses charge to allowance		(8,083)		(2)		(364)		—		(373)		(25)		(176)		(1)		(9,024)
Recoveries credited to allowance		1,943		—		171		—		60		164		46		—		2,384
Net losses charged to allowance		(6,140)		(2)		(193)		—		(313)		139		(130)		(1)		(6,640)
Provision (credit) charged to operations		7,410		(2,220)		5,847		(1,760)		512		(1,955)		111		10		7,955
Balance at December 31, 2021	$	23,178	$	35,390	$	35,654	$	3,291	$	4,073	$	7,754	$	272	$	762	$	110,374

	December 31, 2020
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278
Adoption of ASU 2016-13		4,247		13,391		(4,292)		(355)		(1,580)		(429)		(225)		(410)		10,347
Losses charge to allowance		(8,936)		(19)		(55)		—		(160)		(124)		(280)		—		(9,574)
Recoveries credited to allowance		2,191		35		117		—		21		186		69		10		2,629
Net losses charged to allowance		(6,745)		16		62		—		(139)		62		(211)		10		(6,945)
Provision (credit) charged to operations		13,261		6,053		17,697		3,620		1,831		2,402		185		330		45,379
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059

	December 31, 2019
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2018	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charge to allowance		(14,412)		(39)		(7,353)		—		(201)		(435)		(487)		(1)		(22,928)
Recoveries credited to allowance		2,196		113		318		—		26		286		40		—		2,979
Net losses charged to allowance		(12,216)		74		(7,035)		—		(175)		(149)		(447)		(1)		(19,949)
Provision (credit) charged to operations		10,765		2,955		4,215		(22)		470		(35)		542		(47)		18,843
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278

The allowance for credit losses is a reserve established through a provision for credit losses charged to expense, which represents management’s best estimate of probable loan losses when evaluating loans (i) individually or (ii) collectively. The credit loss expense charged to operations for the twelve months ended December 31, 2021 has decreased from the same period of 2020 as economic conditions in 2021 stabilized and in some cases, improved, impacting certain segments of our loan portfolio.  The stabilization and improvement means that the pool specific qualitative loss factors used in the December 31, 2020 ACL calculation have remained constant in the December 31, 2021 ACL calculation,

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

which positively impacted the calculation and resulted in a decrease in the credit loss expense for 2021.  The credit loss expense charged to operations increased  for the year ended December 31, 2020 and can be primarily attributed to the deteriorating economic conditions occurring in those periods as a result of COVID-19 and the impact of those conditions on certain segments of our ACL calculation for those periods.  We adopted the provisions of ASU 2016-13 on January 1, 2020, resulting in a transition from the long-standing incurred loss model to an expected credit loss model. The increase in provision for probable loan losses charged to expense and charge-offs charged to the allowance for probable loan losses for the year ended December 31, 2019 can be primarily attributed to a relationship that is secured by multiple pieces of real property on which car dealerships are operated.  The relationship began deteriorating in the fourth quarter of 2018, triggered by significant fraud by a high level insider of the car dealership resulting in the dealerships unexpectedly filing for bankruptcy and creating an exposure for potential loss since the operations of the dealerships were the source of repayment from the borrower.  The relationship further deteriorated in the first quarter of 2019 after the sponsor of the court approved debtor in possession plan discontinued its role in the process and thus did not fulfill its obligation to assume full responsibility of the accrued and unpaid interest.  Although the relationship is secured by real property (the dealerships’ real estate), the real property has specialized use, contributing to the potential exposure for probable loss.  During the first quarter of 2019, in light of the circumstances and management’s evaluation of the relationship, the decision was made to place the relationship on impaired, non-accrual status and place a specific reserve on the relationship in the amount of $9.5 million.  During the second quarter of 2019, management continued to evaluate the relationship and decided to foreclose on the underlying real estate collateral, resulting in a charge-off of approximately $9.5 million, reflected in the tables above as part of the Commercial and commercial real estate: farmland and commercial categories.  

The table below provides additional information on the balance of loans individually or collectively evaluated for impairment and their related allowance, by loan class:

	December 31, 2021
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	29	$	1,501,554	$	23,149
Commercial real estate: other construction & land development		589		70		1,667,524		35,320
Commercial real estate: farmland & commercial		562		—		2,710,494		35,654
Commercial real estate: multifamily		131		—		284,405		3,291
Residential: first lien		87		—		403,571		4,073
Residential: junior lien		—		—		464,173		7,754
Consumer		—		—		40,966		272
Foreign		—		—		134,797		762
Total	$	1,667	$	99	$	7,207,484	$	110,275

51

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

	December 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,189	$	209	$	1,784,747	$	21,699
Commercial real estate: other construction & land development		17,496		70		1,829,261		37,542
Commercial real estate: farmland & commercial		439		—		2,288,869		30,000
Commercial real estate: multifamily		134		—		440,910		5,051
Residential: first lien		151		—		404,968		3,874
Residential: junior lien		38		—		593,987		9,570
Consumer		—		—		40,595		291
Foreign		—		—		138,970		753
Total	$	19,447	$	279	$	7,522,307	$	108,780

Loans accounted for on a non-accrual basis at December 31, 2021, 2020 and 2019 amounted to $1,921,000, $19,822,000 and $4,886,000, respectively.  The decrease in non-accrual Commercial loans at December 31, 2021 compared to December 31, 2020 can be attributed to a relationship secured by commercial property that was placed on non-accrual in the fourth quarter of 2020 and foreclosed upon in the first quarter of 2021.  The effect of such non-accrual loans reduced interest income by approximately $169,000, $694,000 and $340,000 for the years ended December 31, 2021, 2020 and 2019, respectively. Amounts received on non-accruals are applied, for financial accounting purposes, first to principal and then to interest after all principal has been collected. Accruing loans contractually past due 90 days or more as to principal or interest payments at December 31, 2021, 2020 and 2019 amounted to approximately $8,642,000, $8,238,000 and $59,705,000, respectively.  

The table below provides additional information on loans accounted for on a non-accrual basis by loan class:

	December 31, 2021		December 31, 2020
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	1,189
Commercial real estate: other construction & land development		589		17,496
Commercial real estate: farmland & commercial		562		439
Commercial real estate: multifamily		131		134
Residential: first lien		341		526
Residential: junior lien		—		38
Total non-accrual loans	$	1,921	$	19,822

Doubtful loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. We have identified these loans through our normal loan review procedures. Doubtful loans are measured based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) the fair value of the collateral if the loan is collateral dependent. Substantially all of our doubtful loans are measured at the fair value of the collateral. In limited cases, we may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

The following table details loans accounted for as “troubled debt restructuring,” segregated by loan class.  Loans accounted for as troubled debt restructuring are included in impaired loans.

52

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

	December 31, 2021		December 31, 2020
		(Dollars in Thousands)
Domestic
Residential: first lien	$	2,254	$	4,078
Residential: junior lien		105		521
Consumer		878		989
Foreign		16		233
Total troubled debt restructuring	$	3,253	$	5,821

We are actively working with our customers affected by the current economic crisis arising from COVID-19.  We have been offering and are prepared to continue to offer assistance in accordance with current regulatory guidance.  That includes continuously reaching out to our customers and, in some cases, offering short-term payment deferral plans.  In accordance with the Coronavirus Aid, Relief and Economic Security (“CARES”) Act or interagency regulatory guidance, these short-term deferrals are not considered troubled debt restructurings.  As of February 18, 2022, approximately $123,194,000 in loans with some degree of payment deferrals were in our system. In accordance with interagency regulatory guidance these short-term deferrals are not considered troubled debt restructurings. The $123,194,000 is comprised primarily of loans related to industries that have been significantly impacted by the COVID-19 pandemic, including the hospitality sector, special use facilities, including child-care centers, and retail developments.  

With the passage of the Paycheck Protection Program (“PPP”), administered by the Small Business Association (“SBA”), we assisted our customers with applications for loans through the PPP.  PPP loans earn interest at 1% and PPP loans made prior to June 5, 2020 have a two-year term, while those made after June 5, 2020 have a five-year term;  however, PPP loans also include forgiveness provisions that we expect most customers will utilize.  Customers began submitting applications for the forgiveness program in the third quarter of 2020.  PPP loans were intended to support up to 24 weeks of payroll and certain other costs to help those businesses remain viable and allow their employees to pay their bills.  As of February 18, 2022, we had 968 PPP loans totaling approximately $71,149,000 outstanding.  The PPP loans are fully guaranteed by the U.S. government through the SBA.      

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial and industrial or real estate loans are generally considered by management to represent a loss, in whole or part, when an exposure beyond any collateral coverage is apparent and when no further collection of the loss portion is anticipated based on the borrower’s financial condition and general economic conditions in the borrower’s industry. Generally, unsecured consumer loans are charged-off when 90 days past due.

While management considers that it is generally able to identify borrowers with financial problems reasonably early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting loan losses. The determination that a loan is likely to be uncollectible and that it should be wholly or partially charged-off as a loss is an exercise of judgment. Similarly, the determination of the adequacy of the ACL (formerly allowance for probable loan losses) can be made only on a subjective basis. It is the judgment of our management that the ACL at December 31, 2021 and December 31, 2020, was adequate to absorb expected losses from loans in the portfolio at that date.

53

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

The following table presents information regarding the aging of past due loans by loan class:

	December 31, 2021
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
	(Dollars in Thousands)
Domestic
Commercial	$	2,534	$	303	$	577	$	577	$	3,414	$	1,498,438	$	1,501,852
Commercial real estate: other construction & land development		499		334		188		188		1,021		1,667,092		1,668,113
Commercial real estate: farmland & commercial		18,164		172		644		307		18,980		2,692,076		2,711,056
Commercial real estate: multifamily		—		—		—		—		—		284,536		284,536
Residential: first lien		2,342		1,212		5,129		4,937		8,683		394,975		403,658
Residential: junior lien		747		115		1,055		1,055		1,917		462,256		464,173
Consumer		231		88		4		4		323		40,643		40,966
Foreign		1,319		232		1,574		1,574		3,125		131,672		134,797
Total past due loans	$	25,836	$	2,456	$	9,171	$	8,642	$	37,463	$	7,171,688	$	7,209,151

	December 31, 2020
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
		(Dollars in Thousands)
Domestic
Commercial	$	1,931	$	1,109	$	563	$	318	$	3,603	$	1,782,333	$	1,785,936
Commercial real estate: other construction & land development		1,059		854		16,587		—		18,500		1,828,257		1,846,757
Commercial real estate: farmland & commercial		2,435		219		186		186		2,840		2,286,468		2,289,308
Commercial real estate: multifamily		126		—		—		—		126		440,918		441,044
Residential: first lien		2,399		926		6,165		5,890		9,490		395,629		405,119
Residential: junior lien		561		247		1,197		1,197		2,005		592,020		594,025
Consumer		318		71		79		79		468		40,127		40,595
Foreign		478		180		568		568		1,226		137,744		138,970
Total past due loans	$	9,307	$	3,606	$	25,345	$	8,238	$	38,258	$	7,503,496	$	7,541,754

The increase in commercial real estate:  farmland and commercial loans past due 30 – 59 days can be attributed to a relationship secured by a retail center.  The decrease in commercial real estate:  other construction & land development loans past due 90 days or greater at December 31, 2021 compared to December 31, 2020 can be primarily attributed to a relationship secured by commercial property which was foreclosed upon in the first quarter of 2021.  Our internal classified report is segregated into the following categories: (i) “Special Review Credits,” (ii) “Watch List—Pass Credits,” or (iii) “Watch List—Substandard Credits.” The loans placed in the “Special Review Credits” category reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. The “Special Review Credits” are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the “Watch List—Pass Credits” category reflect our opinion that the credit contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” The “Watch List—Pass Credits” are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the “Watch List—Substandard Credits” classification are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we could sustain some future loss if such weaknesses are not corrected.

A summary of the loan portfolio by credit quality indicator by loan class is as follows:

54

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

		2021	2020		2019		2018		2017		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2021
Domestic
Commercial
Pass	$	1,041,763	$	167,691	$	77,579	$	58,439	$	37,104	$	5,144	$	1,387,720
Special Review		74,559		497		139		81		—		—		75,276
Watch List - Pass		33,920		—		—		—		—		10		33,930
Watch List - Substandard		3,581		273		716		57		—		1		4,628
Watch List - Doubtful		224		—		—		—		74		—		298
Total Commercial	$	1,154,047	$	168,461	$	78,434	$	58,577	$	37,178	$	5,155	$	1,501,852
Commercial real estate: other construction & land development
Pass	$	966,946	$	312,389	$	308,673	$	37,124	$	16,642	$	2,439	$	1,644,213
Special Review		—		—		211		—		—		—		211
Watch List - Pass		—		23,100		—		—		—		—		23,100
Watch List - Doubtful		485		104		—		—		—		—		589
Total Commercial real estate: other construction & land development	$	967,431	$	335,593	$	308,884	$	37,124	$	16,642	$	2,439	$	1,668,113
Commercial real estate: farmland & commercial
Pass	$	1,001,335	$	680,777	$	288,333	$	417,353	$	96,096	$	97,119	$	2,581,013
Special Review		929		1,292		—		3,448		61		—		5,730
Watch List - Pass		18,790		44,059		—		—		94		1		62,944
Watch List - Substandard		—		54,097		3,899		—		2,355		456		60,807
Watch List - Doubtful		—		224		337		—		—		1		562
Total Commercial real estate: farmland & commercial	$	1,021,054	$	780,449	$	292,569	$	420,801	$	98,606	$	97,577	$	2,711,056
Commercial real estate: multifamily
Pass	$	133,152	$	40,766	$	78,609	$	10,632	$	14,217	$	7,029	$	284,405
Watch List - Doubtful		—		131		—		—		—		—		131
Total Commercial real estate: multifamily	$	133,152	$	40,897	$	78,609	$	10,632	$	14,217	$	7,029	$	284,536
Residential: first lien
Pass	$	128,742	$	52,725	$	57,249	$	49,259	$	29,477	$	85,838	$	403,290
Watch List - Substandard		56		—		103		—		122		—		281
Watch List - Doubtful		—		87		—		—		—		—		87
Total Residential: first lien	$	128,798	$	52,812	$	57,352	$	49,259	$	29,599	$	85,838	$	403,658
Residential: junior lien
Pass	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Total Residential: junior lien	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Residential: junior lien
Consumer
Pass	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Total Consumer	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Foreign
Pass	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Foreign	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Loans	$	3,641,975	$	1,540,327	$	885,554	$	616,037	$	241,896	$	283,362	$	7,209,151

55

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2020
Domestic
Commercial
Pass	$	1,168,671	$	240,869	$	145,670	$	85,434	$	13,901	$	10,000	$	1,664,545
Special Review		75,638		—		—		—		—		—		75,638
Watch List - Pass		39,886		11		—		3		—		17		39,917
Watch List - Substandard		3,360		683		289		—		315		—		4,647
Watch List - Doubtful		777		161		92		159		—		—		1,189
Total Commercial	$	1,288,332	$	241,724	$	146,051	$	85,596	$	14,216	$	10,017	$	1,785,936
Commercial
Commercial real estate: other construction & land development
Pass	$	773,165	$	576,707	$	320,308	$	78,174	$	10,534	$	3,343	$	1,762,231
Special Review		20,828		21,650		—		—		—		—		42,478
Watch List - Pass		23,101		1,451		—		—		—		—		24,552
Watch List - Doubtful		16,702		794		—		—		—		—		17,496
Total Commercial real estate: other construction & land development	$	833,796	$	600,602	$	320,308	$	78,174	$	10,534	$	3,343	$	1,846,757
Commercial real estate: farmland & commercial
Pass	$	884,070	$	373,993	$	386,268	$	189,639	$	202,500	$	116,729	$	2,153,199
Special Review		3,041		—		4,758		177		3,218		—		11,194
Watch List - Pass		61,637		942		277		80		—		—		62,936
Watch List - Substandard		53,809		4,986		—		2,269		475		1		61,540
Watch List - Doubtful		—		202		—		—		—		237		439
Total Commercial real estate: farmland & commercial	$	1,002,557	$	380,123	$	391,303	$	192,165	$	206,193	$	116,967	$	2,289,308
Commercial real estate: multifamily
Pass	$	74,577	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	440,910
Watch List - Doubtful		134		—		—		—		—		—		134
Total Commercial real estate: multifamily	$	74,711	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	441,044
Residential: first lien
Pass	$	81,004	$	62,165	$	72,299	$	54,593	$	29,250	$	105,463	$	404,774
Watch List - Pass		—		14		131		—		—		—		145
Watch List - Substandard		—		—		—		—		49		—		49
Watch List - Doubtful		86		—		—		—		—		65		151
Total Residential: first lien	$	81,090	$	62,179	$	72,430	$	54,593	$	29,299	$	105,528	$	405,119
Residential: junior lien
Pass	$	196,308	$	108,276	$	61,636	$	75,056	$	56,705	$	94,454	$	592,435
Special Review		740		—		—		812		—		—		1,552
Watch List- Doubtful		—		—		38		—		—		—		38
Total Residential: junior lien	$	197,048	$	108,276	$	61,674	$	75,868	$	56,705	$	94,454	$	594,025
Consumer
Pass	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Total Consumer	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Foreign
Pass	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Foreign	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Loans	$	3,601,680	$	1,627,511	$	1,087,031	$	556,923	$	327,336	$	341,273	$	7,541,754

The decrease in Commercial Real Estate:  Other Construction and Land Development loans in the Special Review category at December 31, 2021 compared to December 31, 2020 can be attributed to the upgrade of a relationship secured by real estate planned for lot development to Pass.  Also impacting the Special Review category was the payoff of a loan secured by commercial lots in the first quarter of 2021.  The decrease in Commercial Real Estate:  Farmland and Commercial Watch-List Doubtful loans at December 31, 2021 compared to December 31, 2020 can be attributed to a relationship secured by commercial property that was foreclosed upon in the first quarter of 2021.    

56

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

(5) Bank Premises and Equipment

A summary of bank premises and equipment, by asset classification, at December 31, 2021 and 2020 were as follows:

	Estimated
	useful lives				2021		2020
					(Dollars in Thousands)
Bank buildings and improvements	5	-	39	years	$	573,276	$	577,656
Furniture, equipment and vehicles	1	-	20	years		302,847		311,313
Land						113,118		117,848
Less: accumulated depreciation						(542,159)		(526,939)
Bank premises and equipment, net					$	447,082	$	479,878

(6) Goodwill and Other Intangible Assets

The majority of our identified intangibles are in the form of amortizable core deposit premium.  A small portion of the fully amortized identified intangibles represent identified intangibles in the acquisition of the rights to the insurance agency contracts of InsCorp, Inc., acquired in 2008. Information on our identified intangible assets follows:

	Carrying		Accumulated
	Amount		Amortization		Net
	(Dollars in Thousands)
December 31, 2021:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—
December 31, 2020:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—

Amortization expense of intangible assets was $0, $0 and $0 for the years ended December 31, 2021, 2020 and 2019.

There were no changes in the carrying amount of goodwill for the years ended December 31, 2021 and 2020.

57

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

(7) Deposits

Deposits as of December 31, 2021 and 2020 and related interest expense for the years ended December 31, 2021, 2020 and 2019 were as follows:

	2021		2020
	(Dollars in Thousands)
Deposits:
Demand - non-interest bearing
Domestic	$	4,805,999	$	3,781,277
Foreign		1,032,527		934,537
Total demand non-interest bearing		5,838,526		4,715,814
Savings and interest bearing demand
Domestic		3,555,279		2,919,314
Foreign		1,035,269		933,191
Total savings and interest bearing demand		4,590,548		3,852,505
Time, certificates of deposit $100,000 or more
Domestic		794,757		797,692
Foreign		866,160		822,387
Less than $100,000
Domestic		286,499		291,473
Foreign		241,387		241,989
Total time, certificates of deposit		2,188,803		2,153,541
Total deposits	$	12,617,877	$	10,721,860

	2021		2020		2019
	(Dollars in Thousands)
Interest expense:
Savings and interest bearing demand
Domestic	$	3,268	$	5,098	$	13,462
Foreign		842		1,260		2,917
Total savings and interest bearing demand		4,110		6,358		16,379
Time, certificates of deposit $100,000 or more
Domestic		6,652		8,827		7,804
Foreign		3,452		7,536		9,407
Less than $100,000
Domestic		984		1,781		2,232
Foreign		567		1,086		1,527
Total time, certificates of deposit		11,655		19,230		20,970
Total interest expense on deposits	$	15,765	$	25,588	$	37,349

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Scheduled maturities of time deposits as of December 31, 2021 were as follows:

	Total
	(in thousands)
2022	$	2,071,684
2023		86,480
2024		20,788
2025		9,608
2026		231
Thereafter		12
Total	$	2,188,803

Scheduled maturities of time deposits in amounts of $100,000 or more at December 31, 2021, were as follows:

	Total
	(in thousands)
Due within 3 months or less	$	677,946
Due after 3 months and within 6 months		407,731
Due after 6 months and within 12 months		506,392
Due after 12 months		68,848
	$	1,660,917

Time deposits that meet or exceed the FDIC insurance limit of $250,000 at December 31, 2021 and December 31, 2020 were $1,125,318 and $1,085,404, in thousands, respectively.

(8) Securities Sold Under Repurchase Agreements

Our Subsidiary Banks have entered into repurchase agreements with individual customers of the Subsidiary Banks. The purchasers have agreed to resell to the Subsidiary Banks identical securities upon the maturities of the agreements. Securities sold under repurchase agreements were mortgage-backed securities and averaged $411,611,000 and $335,392,000 during 2021 and 2020, respectively, and the maximum amount outstanding at any month end during 2021 and 2020 was $443,980,000 and $428,148,000 respectively.

Further information related to repurchase agreements at December 31, 2021 and 2020 is set forth in the following table:

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

	Collateral Securities				Repurchase Borrowing
	Book Value of		Fair Value of		Balance of		Weighted Average
	Securities Sold		Securities Sold		Liability		Interest Rate
	(Dollars in Thousands)
December 31, 2021 term:
Overnight agreements	$	500,495	$	492,026	$	428,235	0.16	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,452		11,229		11,437	0.48
Total	$	511,947	$	503,255	$	439,672	0.17	%
December 31, 2020 term:
Overnight agreements	$	506,020	$	507,164	$	416,757	0.13	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,684		11,641		11,391	0.43
Total	$	517,704	$	518,805	$	428,148	0.14	%

The book value and fair value of securities sold includes the entire book value and fair value of securities partially or fully pledged under repurchase agreements.

(9) Other Borrowed Funds

Other borrowed funds include Federal Home Loan Bank borrowings, which may be short and long-term fixed borrowings issued by the Federal Home Loan Bank of Dallas and the Federal Home Loan Bank of Topeka at the market price offered at the time of funding. These borrowings are secured by mortgage-backed investment securities and a portion of our loan portfolio.

Further information regarding our other borrowed funds at December 31, 2021 and 2020 is set forth in the following table:

	December 31,
	2021			2020
	(Dollars in Thousands)
Federal Home Loan Bank advances—short-term
Balance at year end	$	—		$	—
Rate on balance outstanding at year end		—	%		—	%
Average daily balance	$	—		$	110,776
Average rate		—	%		1.19	%
Maximum amount outstanding at any month end	$	—		$	292,000
Federal Home Loan Bank advances—long-term(1)
Balance at year end	$	436,138		$	436,327
Rate on balance outstanding at year end		1.73	%		1.73	%
Average daily balance	$	436,225		$	436,411
Average rate		1.71	%		1.71	%
Maximum amount outstanding at any month end	$	436,311		$	436,495

(1) Long-term advances at December 31, 2021 and December 31, 2020 consisted of both amortizing and non-amortizing advances.  The non-amortizing advances mature in the following increments:  $75,000,000 in July 2028, $100,000,000 in March 2033 and $250,000,000 in August 2033 and are callable by the FHLB on a quarterly basis.  Two amortizing advances are outstanding at December 31, 2021 in the amounts of $3,033,000 and $8,104,000 and mature in December 2033 and November 2033, respectively.  The amortization on the amortizing long-term advances totals approximately $194,000, $199,000, $204,000, $210,000 and $2215,000 for the years ending December 31, 2022, 2023, 2024, 2025 and December 31, 2026, respectively.      

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

(10) Junior Subordinated Deferrable Interest Debentures

We have formed five statutory business trusts under the laws of the State of Delaware for the purpose of issuing trust preferred securities. These statutory business trusts (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (the “Debentures”) we issued. As of December 31, 2021 and December 31, 2020, the principal amount of debentures outstanding totaled $134,642,000.

The Debentures are subordinated and junior in right of payment to all our present and future senior indebtedness (as defined in the respective indentures) and are pari passu with one another. The interest rate payable on, and the payment terms of the Debentures are the same as the distribution rate and payment terms of the respective issues of Capital and Common Securities issued by the Trusts. We have fully and unconditionally guaranteed the obligations of each of the Trusts with respect to the Capital and Common Securities. We have the right, unless an Event of Default (as defined in the Indentures) has occurred and is continuing, to defer payment of interest on the Debentures for up to twenty consecutive quarterly periods on Trusts VIII, IX, X, XI and XII. If interest payments on any of the Debentures are deferred, distributions on both the Capital and Common Securities related to that Debenture would also be deferred. The redemption prior to maturity of any of the Debentures may require the prior approval of the Federal Reserve and/or other regulatory bodies.

For financial reporting purposes, the Trusts are treated as investments and not consolidated in the consolidated financial statements. Although the Capital Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold would qualify as Tier 2 capital. At December 31, 2021 and December 31, 2020, the total $134,642,000 of the Capital Securities outstanding qualified as Tier 1 capital.

The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2021:

	Junior
	Subordinated
	Deferrable
	Interest		Repricing	Interest		Interest				Optional
	Debentures		Frequency	Rate		Rate Index(1)			Maturity Date	Redemption Date(1)
	(Dollars in Thousands)
Trust VIII	$	25,774	Quarterly	3.17	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	1.75	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	1.78	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	1.75	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	1.62	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

(1) The Capital Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

(11) Earnings per Share (“EPS”)

Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

outstanding during the reporting period. The calculation of the basic EPS and the diluted EPS for the years ended December 31, 2021, 2020, and 2019 is set forth in the following table:

	Net Income		Shares	Per Share
	(Numerator)		(Denominator)	Amount
	(Dollars in Thousands,
	Except Per Share Amounts)
December 31, 2021:
Basic EPS
Net income available to common shareholders	$	253,922	63,352,737	$	4.01
Potential dilutive common shares and warrants		—	133,629
Diluted EPS	$	253,922	63,486,366	$	4.00
December 31, 2020:
Basic EPS
Net income available to common shareholders	$	167,319	63,725,819	$	2.63
Potential dilutive common shares and warrants		—	127,316
Diluted EPS	$	167,319	63,853,135	$	2.62
December 31, 2019:
Basic EPS
Net income available to common shareholders	$	205,104	65,476,606	$	3.13
Potential dilutive common shares		—	209,078
Diluted EPS	$	205,104	65,685,684	$	3.12

(12) Employees’ Profit Sharing Plan

We have a deferred profit sharing plan for full-time employees with a minimum of one year of continuous employment. Our annual contribution to the plan is based on a percentage, as determined by our Board of Directors, of income before income taxes, as defined, for the year. Allocation of the contribution among officers and employees’ accounts is based on length of service and amount of salary earned. Profit sharing costs of $3,550,000, $4,000,000 and $4,200,000 were charged to income for the years ended December 31, 2021, 2020, and 2019, respectively.

(13) International Operations

We provide international banking services for our customers through our Subsidiary Banks. Neither we nor our Subsidiary Banks have facilities located outside the United States. International operations are distinguished from domestic operations based upon the domicile of the customer.

Because the resources we employ are common to both international and domestic operations, it is not practical to determine net income generated exclusively from international activities.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

A summary of assets attributable to international operations at December 31, 2021 and 2020 are as follows:

	2021		2020
	(Dollars in Thousands)
Loans:
Commercial	$	91,861	$	90,177
Others		42,936		48,793
		134,797		138,970
Less allowance for probable loan losses		(762)		(753)
Net loans	$	134,035	$	138,217
Accrued interest receivable	$	449	$	605

At December 31, 2021, we had $111,955,000 in outstanding standby and commercial letters of credit to facilitate trade activities.

Revenues directly attributable to international operations were approximately $4,090,000, $4,676,000 and $5,445,000 for the years ended December 31, 2021, 2020 and 2019, respectively.

(14) Income Taxes

We file a consolidated U.S. Federal and State income tax return. The current and deferred portions of net income tax expense included in the consolidated statements of income are presented below for the years ended December 31:

	2021		2020		2019
	(Dollars in Thousands)
Current
U.S.	$	59,591	$	43,794	$	48,559
State		5,272		3,709		2,944
Foreign		—		58		38
Total current taxes		64,863		47,561		51,541
Deferred
U.S.		3,794		(2,733)		2,979
State		(252)		(389)		330
Total deferred taxes		3,542		(3,122)		3,309
Total income taxes	$	68,405	$	44,439	$	54,850

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Total income tax expense differs from the amount computed by applying the U.S. Federal income tax rate of 21%for 2021, 2020 and 2019 to income before income taxes. The reasons for the differences for the years ended December 31 are as follows:

	2021		2020		2019
	(Dollars in Thousands)
Computed expected tax expense	$	68,011	$	45,218	$	55,086
Change in taxes resulting from:
Tax-exempt interest income		(2,970)		(2,709)		(2,550)
State tax, net of federal income taxes, tax credit and refunds		3,966		2,622		2,587
Other investment income		(1,753)		(2,205)		(1,480)
Net investment in low income housing investments		203		1,990		623
Other		948		(477)		584
Actual tax expense	$	68,405	$	44,439	$	54,850

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2021 and 2020 are reflected below:

	2021		2020
	(Dollars in Thousands)
Deferred tax assets:
Loans receivable, principally due to the allowance for probable loan losses	$	22,773	$	21,921
Other real estate owned		1,227		1,183
Accrued expenses		81		81
Net unrealized losses on available for sale investment securities		9,062		—
Other		4,842		5,649
Total deferred tax assets		37,985		28,834
Deferred tax liabilities:
Bank premises and equipment, principally due to differences on depreciation		(12,163)		(12,350)
Net unrealized gains on available for sale investment securities		—		(5,679)
Impairment charges on available-for-sale securities		(19)		(19)
Identified intangible assets and goodwill		(13,966)		(13,807)
Other		(24,235)		(20,551)
Total deferred tax liabilities		(50,383)		(52,406)
Net deferred tax liability	$	(12,398)	$	(23,572)

The net deferred tax liability of $12,398,000 at December 31, 2021 and $23,572,000 at December 31, 2020 is included in other liabilities in the consolidated statements of condition.

(15) Stock Options

On April 5, 2012, the Board of Directors adopted the 2012 International Bancshares Corporation Stock Option Plan (the “2012 Plan”). There are 800,000 shares available for stock option grants under the 2012 Plan. Under the 2012 Plan, both qualified incentive stock options (“ISOs”) and non-qualified stock options (“NQSOs”) may be granted. Options granted may be exercisable for a period of up to 10 years from the date of grant, excluding ISOs granted to 10% shareholders, which may be exercisable for a period of up to only five years. As of December 31, 2021, 30,678 shares were available for future grants under the 2012 Plan.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

The fair value of each option award granted under the plan is estimated on the date of grant using a Black-Scholes-Merton option valuation model that uses the assumptions noted in the following table. Expected volatility is based on the historical volatility of the price of our stock. We use historical data to estimate the expected dividend yield and employee termination rates within the valuation model. The expected term of options is derived from historical exercise behavior. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.

	2021		2020
Expected Life (Years)	7.00		7.00
Dividend yield	3.18	%	6.04	%
Interest rate	1.02	%	0.74	%
Volatility	37.84	%	29.04	%

A summary of option activity under the stock option plans for the twelve months ended December 31, 2021 is as follows:

				Weighted
		Weighted		average
		average		remaining	Aggregate
	Number of	exercise		contractual	intrinsic
	options	price		term (years)	value ($)
					(in Thousands)
Options outstanding at December 31, 2020	651,127	$	27.24
Plus: Options granted	18,000		37.76
Less:
Options exercised	110,000		21.94
Options expired	—		—
Options forfeited	38,576		33.19
Options outstanding at December 31, 2021	520,551		28.28	4.49	$	7,344
Options fully vested and exercisable at December 31, 2021	290,914	$	23.29	2.71	$	5,557

Stock-based compensation expense included in the consolidated statements of income for the years ended December 31, 2021, 2020 and 2019 was approximately $506,000, $743,000 and $980,000, respectively. As of December 31, 2021, there was approximately $907,000 of total unrecognized stock-based compensation cost related to non-vested options granted under our plans that will be recognized over a weighted average period of 1.6 years.

Other information pertaining to option activity during the twelve months ended December 31, 2021, 2020 and 2019 is as follows:

	Twelve Months Ended December 31,
	2021		2020		2019
Weighted average grant date fair value of stock options granted	$	10.20	$	2.46	$	7.38
Total fair value of stock options vested	$	1,308,000	$	1,218,000	$	1,333,000
Total intrinsic value of stock options exercised	$	2,536,000	$	356,000	$	2,373,000

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

(16) Commitments, Contingent Liabilities and Other Matters

On March 15, 2020, the FRB announced that it had reduced regulatory reserve requirements to zero percent effective on March 26, 2020; therefore no cash is required to be maintained to satisfy regulatory reserve requirements.

We are involved in various legal proceedings that are in various stages of litigation. We have determined, based on discussions with our counsel that any material loss in such actions, individually or in the aggregate, is remote or the damages sought, even if fully recovered, would not be considered material to our consolidated statements of condition and related statements of income, comprehensive income, shareholders’ equity and cash flows. However, many of these matters are in various stages of proceedings and further developments could cause management to revise its assessment of these matters.

(17) Transactions with Related Parties

In the ordinary course of business, the Subsidiary Banks make loans to our directors and executive officers, including their affiliates, families and companies in which they are principal owners. In the opinion of management, these loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons and do not involve more than normal risk of collectability or present other unfavorable features. The aggregate amounts receivable from such related parties amounted to approximately $18,881,000 and $30,398,000 at December 31, 2021 and 2020, respectively.

(18) Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk

In the normal course of business, the Subsidiary Banks are party to financial instruments with off-statement of condition risk to meet the financing needs of their customers. These financial instruments include commitments to their customers. These financial instruments involve, to varying degrees, elements of credit risk in excess of the amounts recognized in the consolidated statement of condition. The contract amounts of these instruments reflect the extent of involvement the Subsidiary Banks have in particular classes of financial instruments. At December 31, 2021, the following financial amounts of instruments, whose contract amounts represent credit risks, were outstanding:

Commitments to extend credit	$	2,679,462,000
Credit card lines		13,702,000
Standby letters of credit		111,955,000
Commercial letters of credit		594,000

We enter into a standby letter of credit to guarantee performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved is represented by the contractual amounts of those instruments. Under the standby letters of credit, we are required to make payments to the beneficiary of the letters of credit upon request by the beneficiary so long as all performance criteria have been met. At December 31, 2021, the maximum potential amount of future payments is approximately $111,955,000. At December 31, 2021, the fair value of these guarantees is not significant. Unsecured letters of credit totaled approximately $29,254,000 and $39,487,000 at December 31, 2021 and 2020, respectively.

We enter into commercial letters of credit on behalf of our customers which authorize a third party to draw drafts upon us up to a stipulated amount and with specific terms and conditions. A commercial letter of credit is a conditional commitment on our part to provide payment on drafts drawn in accordance with the terms of the commercial letter of credit.

The Subsidiary Banks’ exposure to credit loss in the event of nonperformance by the other party to the above financial instruments is represented by the contractual amounts of the instruments. The Subsidiary Banks use the same credit policies in making commitments and conditional obligations as they do for on-statement of condition instruments. The Subsidiary Banks control the credit risk of these transactions through credit approvals, limits and monitoring procedures. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

condition established in the contract. Commitments generally have fixed expiration dates normally less than one year or other termination clauses and may require the payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Subsidiary Banks evaluate each customer’s credit-worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Subsidiary Banks upon extension of credit, is based on management’s credit evaluation of the customer. Collateral held varies, but may include residential and commercial real estate, bank certificates of deposit, accounts receivable and inventory.

The Subsidiary Banks make commercial, real estate and consumer loans to customers principally located in South, Central and Southeast Texas and the State of Oklahoma. Although the loan portfolio is diversified, a substantial portion of its debtors’ ability to honor their contracts is dependent upon the economic conditions in these areas, especially in the real estate and commercial business sectors.

(19) Capital Requirements

Bank regulatory agencies limit the amount of dividends, which the Subsidiary Banks can pay, without obtaining prior approval from such agencies. At December 31, 2021, the Subsidiary Banks could pay dividends of up to $1,066,000,000 without prior regulatory approval and without adversely affecting their “well-capitalized” status under regulatory capital rules in effect at December 31, 2021. In addition to legal requirements, regulatory authorities also consider the adequacy of the Subsidiary Banks’ total capital in relation to their deposits and other factors. These capital adequacy considerations also limit amounts available for payment of dividends. We historically have not allowed any Subsidiary Bank to pay dividends in such a manner as to impair its capital adequacy.

We and the Subsidiary Banks are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on our consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, we must meet specific capital guidelines that involve quantitative measures of our assets, liabilities, and certain off-statement of condition items as calculated under regulatory accounting practices. Our capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.

Current quantitative measures established by regulation to ensure capital adequacy require us to maintain minimum amounts and ratios (set forth in the table on the following page) of Total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets. Management believes, as of December 31, 2021, that we met all capital adequacy requirements to which we are subject.

       In July 2013, the FDIC and other regulatory bodies established a new, comprehensive capital framework for U.S. banking organizations, consisting of minimum requirements that increase both the quantity and quality of capital held by banking organizations. The final rules are a result of the implementation of the BASEL III capital reforms and various Dodd-Frank related capital provisions. Consistent with the Basel international framework, the rules include a new minimum ratio of Common Equity Tier 1 (“CET1”) to risk-weighted assets of 4.5% and a CET1 capital conservation buffer of 2.5% of risk-weighted assets.  The capital conservation buffer began phasing-in on January 1, 2016 at .625% and increased each year until January 1, 2019, when we were required to have a 2.5% capital conservation buffer, effectively resulting in a minimum ratio of CET1 capital to risk-weighted assets of at least 7% upon full implementation. The rules also raised the minimum ratio of Tier 1 capital to risk-weighted assets from 4% to 6% and include a minimum leverage ratio of 4% for all banking organizations. Regarding the quality of capital, the rules emphasize CET1 capital and implements strict eligibility criteria for regulatory capital instruments. The rules also improve the methodology for calculating risk-weighted assets to enhance risk sensitivity. The rules were subject to a four-year phase-in period for mandatory compliance and we were required to begin to phase-in the new rules beginning on January 1, 2015.  We believe that as of December 31, 2021, we meet all fully phased-in capital adequacy requirements.

On November 21, 2017, the OCC, the Federal Reserve and the FDIC finalized a proposed rule that extends the current treatment under the regulatory capital rules for certain regulatory capital deductions and risk weights and certain minority interest requirements, as they apply to banking organizations that are not subject to the advanced approaches

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

capital rules.  Effective January 1, 2018, the rule also paused the full transition to the Basel III treatment of mortgage servicing assets, certain deferred tax assets, investments in the capital of unconsolidated financial institutions and minority interests.  The agencies are also considering whether to make adjustments to the capital rules in response to CECL (the FASB Standard relating to current expected credit loss) and its potential impact on regulatory capital.

On December 7, 2017, the Basel Committee on Banking Supervision unveiled the latest round of its regulatory capital framework, commonly called “Basel IV.”  The framework makes changes to the capital framework first introduced as “Basel III” in 2010.  The committee targeted 2022-2027 as the timeframe for implementation by regulators in individual countries, including the U.S. federal bank regulatory agencies (after notice and comment).

The aforementioned capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of CET1 capital to risk-weighted assets above the minimum but below the conservation buffer will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall.

As of December 31, 2021, our capital levels continue to exceed all capital adequacy requirements under the Basel III Capital Rules as currently applicable to us.    

On May 24, 2018, the EGRRCPA was enacted and, among other things, it includes a simplified capital rule change which effectively exempts banks with assets of less than $10 billion that exceed the “community bank leverage ratio,” from all risk-based capital requirements, including Basel III and its predecessors. The federal banking agencies must establish the “community bank leverage ratio” (a ratio of tangible equity to average consolidated assets) between 8% and 10% before community banks can begin to take advantage of this regulatory relief provision. Some of the Subsidiary Banks, with assets of less than $10 billion, may qualify for this exemption. Additionally, under the EGRRCPA, qualified bank holding companies with assets of up to $3 billion (currently $1 billion) will be eligible for the Federal Reserve’s Small Bank Holding Company Policy Statement, which eases limitations on the issuance of debt by holding companies. On August 28, 2018, the Federal Reserve issued an interim final rule expanding the applicability of its Small Bank Holding Company Policy Statement. While holding companies that meet the conditions of the policy statement are excluded from consolidated capital requirements, their depository institutions continue to be subject to minimum capital requirements. Finally, for banks that continue to be subject to the risk-based capital rules of Basel III (e.g., 150%), certain commercial real estate loans that were formally classified as high volatility commercial real estate 31 (“HVCRE”) will not be subject to heightened risk weights if they meet certain criteria. Also, while acquisition, development, and construction (“ADC”) loans will generally be subject to heightened risk weights, certain exceptions will apply. On September 18, 2018, the federal banking agencies issued a proposed rule modifying the agencies’ capital rules for HVCRE.

As of December 31, 2021, the most recent notification from the FDIC categorized all the Subsidiary Banks as well-capitalized under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized,” we must maintain minimum Total risk-based, Tier 1 risk based, and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed our categorization as well-capitalized.

In December 2018, the federal bank regulators issued a final rule that would provide an optional three-year phase-in period for the day-one regulatory capital effects of the adoption of ASU 2016-13 to ASC 326 “Financial Instruments – Credit Losses,” as amended, on January 1, 2020. We did not elect to use the optional three-year phase-in period when we adopted ASU 2016-13 to ASC 326 “Financial Instruments – Credit Losses,” as amended, on January 1, 2020.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

Our actual capital amounts and ratios for 2021 under current guidelines are presented in the following table:

					For Capital Adequacy				To Be Well-Capitalized
					Purposes				Under Prompt Corrective
	Actual				Phase In Schedule				Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2021:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	2,057,928	20.47	%	$	703,710	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			456,544	7.000		$	423,934	6.50	%
International Bank of Commerce, Brownsville		315,957	19.80			111,690	7.000			103,712	6.50
International Bank of Commerce, Oklahoma		221,567	18.59			83,452	7.000			77,491	6.50
Commerce Bank		102,375	46.06			15,559	7.000			14,448	6.50
International Bank of Commerce, Zapata		75,303	42.25			12,475	7.000			11,584	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,284,579	22.73	%	$	1,055,565	10.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,367,487	20.97			684,816	10.500		$	652,206	10.00	%
International Bank of Commerce, Brownsville		334,495	20.96			167,535	10.500			159,557	10.00
International Bank of Commerce, Oklahoma		232,454	19.50			125,178	10.500			119,217	10.00
Commerce Bank		104,996	47.24			23,339	10.500			22,227	10.00
International Bank of Commerce, Zapata		77,354	43.40			18,713	10.500			17,822	10.00
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	2,170,682	21.59	%	$	854,505	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			554,375	8.500		$	521,764	8.00	%
International Bank of Commerce, Brownsville		315,957	19.80			135,623	8.500			127,645	8.00
International Bank of Commerce, Oklahoma		221,567	18.59			101,334	8.500			95,374	8.00
Commerce Bank		102,375	46.06			18,893	8.500			17,782	8.00
International Bank of Commerce, Zapata		75,303	42.25			15,149	8.500			14,258	8.00
Tier 1 Capital (to Average Assets):
Consolidated	$	2,170,682	13.94	%	$	622,671	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,287,687	11.14			462,225	4.00			577,781	5.00	%
International Bank of Commerce, Brownsville		315,957	20.17			62,663	4.00			78,329	5.00
International Bank of Commerce, Oklahoma		221,567	11.49			77,164	4.00			96,455	5.00
Commerce Bank		102,375	16.10			25,441	4.00			31,801	5.00
International Bank of Commerce, Zapata		75,303	16.15			18,651	4.00			23,314	5.00

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Notes to Consolidated Financial Statements (Continued)

Our actual capital amounts and ratios for 2020 are also presented in the following table:

										To Be Well-Capitalized
					For Capital Adequacy					Under Prompt Corrective
	Actual				Purposes					Action Provisions
	Amount		Ratio		Amount		Ratio			Amount	Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2020:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	1,874,641	19.05	%	$	688,678	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			498,492	7.000		$	462,885	6.50	%
International Bank of Commerce, Oklahoma		207,339	17.45			83,150	7.000			77,211	6.50
International Bank of Commerce, Brownsville		189,575	22.18			59,843	7.000			55,569	6.50
International Bank of Commerce, Zapata		71,369	34.51			14,476	7.000			13,442	6.50
Commerce Bank		93,426	35.64			18,347	7.000			17,037	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,105,360	21.40	%	$	1,033,017	10.500	%		N/A	N/A	%
International Bank of Commerce, Laredo		1,380,685	19.39			747,737	10.500		$	712,131	10.00
International Bank of Commerce, Oklahoma		218,657	18.41			124,725	10.500			118,786	10.00
International Bank of Commerce, Brownsville		200,269	23.43			89,765	10.500			85,490	10.00
International Bank of Commerce, Zapata		73,510	35.55			21,714	10.500			20,680	10.00
Commerce Bank		96,240	36.72			27,521	10.500			26,210	10.00
Tier 1 Capital (to Risk Weighted Assets):												%
Consolidated	$	1,992,403	20.25	%	$	836,252	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			605,311	8.500		$	569,705	8.00
International Bank of Commerce, Oklahoma		207,339	17.45			100,968	8.500			95,029	8.00
International Bank of Commerce, Brownsville		189,575	22.18			72,667	8.500			68,392	8.00
International Bank of Commerce, Zapata		71,369	34.51			17,578	8.500			16,544	8.00
Commerce Bank		93,426	35.64			22,279	8.500			20,968	8.00	%
Tier 1 Capital (to Average Assets):
Consolidated	$	1,992,403	14.92	%	$	534,228	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,295,437	13.11			395,289	4.00			494,112	5.00
International Bank of Commerce, Oklahoma		207,339	12.98			63,879	4.00			79,848	5.00
International Bank of Commerce, Brownsville		189,575	14.55			52,101	4.00			65,127	5.00
International Bank of Commerce, Zapata		71,369	16.52			17,277	4.00			21,596	5.00
Commerce Bank		93,426	16.69			22,394	4.00			27,993	5.00

(20) Fair Value

ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. ASC 820 applies to all financial instruments that are being measured and reported on a fair value basis. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date; it also establishes a fair value hierarchy that prioritizes the inputs used in valuation methodologies into the following three levels:

● Level 1 Inputs—Unadjusted quoted prices in active markets for identical assets or liabilities.

● Level 2 Inputs—Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

● Level 3 Inputs—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or other valuation techniques,

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

as well as instruments for which the determination of fair value requires significant management judgment or estimation.

A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy is set forth below.

The following table represents financial instruments reported on the consolidated statements of condition at their fair value as of December 31, 2021 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2021		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	4,169,363	$	—	$	4,169,363	$	—
States and political subdivisions		44,557		—		44,557		—
Equity Securities		6,079		6,079		—		—
	$	4,219,999	$	6,079	$	4,213,920	$	—

The following table represents financial instruments reported on the consolidated balance sheets at their fair value as of December 31, 2020 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,029,954	$	—	$	3,029,954	$	—
States and political subdivisions		50,814		—		50,814		—
Equity Securities		6,202		6,202		—		—
	$	3,086,970	$	6,202	$	3,080,768	$	—

For the years ended December 31, 2021 and December 31, 2020, debt investment securities available-for-sale are classified within Level 2 of the valuation hierarchy.  Equity securities with readily determinable fair values are classified within Level 1. For debt securities classified as Level 2 in the fair value hierarchy, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things.

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Notes to Consolidated Financial Statements (Continued)

Certain financial instruments are measured at fair value on a nonrecurring basis. They are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2021 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	December 31,		Assets		Inputs		Inputs		During
	2021		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	55	$	—	$	—	$	55	$	209
Other real estate owned	$	18,095	$	—	$	—	$	18,095	$	2,655

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the year ended December 31, 2020 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets		Other		Significant		Net (Credit)
	Year ended		for Identical		Observable		Unobservable		Provision
	December 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	393	$	—	$	—	$	393	$	(86)
Other real estate owned		6,241		—		—		6,241		1,539

Our assets measured at fair value on a non-recurring basis are limited to loans classified as Watch List – Doubtful and other real estate owned.  The fair value of Watch-List Doubtful loans is derived in accordance with FASB ASC 310, “Receivables”.  They are primarily comprised of collateral-dependent commercial loans.   As the primary sources of loan repayments decline, the secondary repayment source, the collateral, takes on greater significance.  Correctly evaluating the fair value becomes even more important.  Re-measurement of the loan to fair value is done through a specific valuation allowance included in the ACL.  The fair value of the loan is based on the fair value of the collateral, as determined through either an appraisal or evaluation process.  The basis for our appraisal and appraisal review process is based on regulatory guidelines and strives to comply with all regulatory appraisal laws, regulations, and the Uniform Standards of Professional Appraisal Practice. All appraisals and evaluations are “as is” (the property’s highest and best use) valuations based on the current conditions of the property/project at that point in time.  The determination of the fair value of the collateral is based on the net realizable value, which is the appraised value less any closing costs, when applicable.  As of December 31, 2021, we had approximately $993,000 of doubtful commercial collateral dependent loans, of which approximately $0 had an appraisal performed within the immediately preceding twelve months and of which approximately $896,000 had an evaluation performed within the immediately preceding twelve months. As of December 31, 2020, we had approximately $18,361,000 of doubtful commercial collateral dependent loans, of which approximately $16,587,000 had an appraisal

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Notes to Consolidated Financial Statements (Continued)

performed within the immediately preceding twelve months and of which approximately $1,283,000 had an evaluation performed within the immediately preceding twelve months.

The determination to either seek an appraisal or to perform an evaluation begins in weekly credit quality meetings, where the committee analyzes the existing collateral values of the doubtful loans and where obsolete appraisals are identified.  In order to determine whether we would obtain a new appraisal or perform an internal evaluation to determine the fair value of the collateral, the credit committee reviews the existing appraisal to determine if the collateral value is reasonable in view of the current use of the collateral and the economic environment related to the collateral.  If the analysis of the existing appraisal does not find that the collateral value is reasonable under the current circumstances, we would obtain a new appraisal on the collateral or perform an internal evaluation of the collateral.  The ultimate decision to get a new appraisal rests with the independent credit administration group.  A new appraisal is not required if an internal evaluation, as performed by in-house experts, is able to appropriately update the original appraisal assumptions to reflect current market conditions and provide an estimate of the collateral’s market value for impairment analysis.  The internal evaluations must be in writing and contain sufficient information detailing the analysis, assumptions and conclusions and they must support performing an evaluation in lieu of ordering a new appraisal.

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate owned is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal) within Level 3 of the fair value hierarchy. Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL (formerly allowance for probable loan losses), if necessary. The fair value is reviewed periodically and subsequent write downs are made accordingly through a charge to operations. Other real estate owned is included in other assets on the consolidated financial statements. For the twelve months ended December 31, 2021, 2020 and 2019, we recorded approximately $2,000, $22,000 and $9,611,000, respectively, in charges to the ACL in connection with loans transferred to other real estate owned. For the twelve months ended December 31, 2021, 2020 and 2019, we recorded approximately $2,655,000, $1,539,000 and $322,000, respectively, in adjustments to fair value in connection with other real estate owned.

The fair value estimates, methods, and assumptions for our financial instruments at December 31, 2021 and December 31, 2020 are outlined below.

Cash and Cash Equivalents

For these short-term instruments, the carrying amount is a reasonable estimate of fair value.

Investment securities held-to-maturity

The carrying amounts of investments held-to-maturity approximate fair value.

Investment Securities

For debt investment securities, which may include U.S. Treasury securities, obligations of other U.S. government agencies, obligations of states and political subdivisions and mortgage pass through and related securities, fair values are from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. See disclosures of fair value of investment securities in Note 2.

Loans

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, real estate and consumer loans as outlined by regulatory reporting guidelines. Each category is segmented into fixed and variable interest rate terms and by performing and non-performing categories.

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Notes to Consolidated Financial Statements (Continued)

For variable rate performing loans, the carrying amount approximates the fair value. For fixed rate performing loans, except residential mortgage loans, the fair value is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk inherent in the loan. For performing residential mortgage loans, fair value is estimated by discounting contractual cash flows adjusted for prepayment estimates using discount rates based on secondary market sources or the primary origination market. Fixed rate performing loans are within Level 3 of the fair value hierarchy. At December 31, 2021 and December 31, 2020, the carrying amount of fixed rate performing loans was $1,363,313,000 and $1,812,413,000, respectively, and the estimated fair value was $1,323,223,000 and $1,747,257,000, respectively.

Accrued Interest

The carrying amounts of accrued interest approximate fair value.

Deposits

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposit accounts, savings accounts and interest-bearing demand deposit accounts, was equal to the amount payable on demand as of December 31, 2021 and December 31, 2020. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is based on currently offered rates. Time deposits are within Level 3 of the fair value hierarchy. At December 31, 2021 and December 31, 2020, the carrying amount of time deposits was $2,188,803,000 and $2,153,541,000, respectively, and the estimated fair value was $2,186,547,000 and $2,148,976,000, respectively.

Securities Sold Under Repurchase Agreements

Securities sold under repurchase agreements are short-term maturities. Due to the contractual terms of the instruments, the carrying amounts approximated fair value at December 31, 2021 and December 31, 2020.  

Junior Subordinated Deferrable Interest Debentures

We currently have floating rate junior subordinated deferrable interest debentures outstanding. Due to the contractual terms of the floating rate junior subordinated deferrable interest debentures, the carrying amounts approximated fair value at December 31, 2021 and December 31, 2020.

Other Borrowed Funds

We currently have long-term borrowings issued from the Federal Home Loan Bank (“FHLB”).  The long-term borrowings outstanding at December 31, 2021 and December 31, 2020 are fixed-rate borrowings and the fair value is based on established market spreads for similar types of borrowings.  The fixed-rate long-term borrowings are included in Level 2 of the fair value hierarchy.  At December 31, 2021 and December 31, 2020 the carrying amount of the fixed-rate long-term FHLB borrowings was $436,138,000 and $436,372,000, respectively, and the estimated fair value was $455,187,000 and $480,475,000 respectively.  

Commitments to Extend Credit and Letters of Credit

Commitments to extend credit and fund letters of credit are principally at current interest rates and therefore the carrying amount approximates fair value.

Limitations

Fair value estimates are made at a point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time of our entire holdings of a particular financial instrument. Because no market exists for a significant portion of our financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

economic conditions, risk characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Fair value estimates are based on existing on-and off-statement of condition financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial assets or liabilities include the bank premises and equipment and core deposit value. In addition, the tax ramifications related to the effect of fair value estimates have not been considered in the above estimates.

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Notes to Consolidated Financial Statements (Continued)

(21) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Condition

(Parent Company Only)

December 31, 2021 and 2020

(Dollars in Thousands)

	2021		2020
ASSETS
Cash	$	62,564	$	66,252
Other investments		90,555		77,661
Net loans		10,401		11,950
Investment in subsidiaries		2,281,597		2,167,516
Goodwill		3,365		3,365
Other assets		1,644		—
Total assets	$	2,450,126	$	2,326,744
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Junior subordinated deferrable interest debentures	$	134,642	$	134,642
Due to IBC Trading		21		21
Other liabilities		6,982		14,083
Total liabilities		141,645		148,746
Shareholders’ equity:
Common shares		96,351		96,241
Surplus		152,144		149,334
Retained earnings		2,470,710		2,289,626
Accumulated other comprehensive (loss) income		(31,980)		20,825
		2,687,225		2,556,026
Less cost of shares in treasury		(378,744)		(378,028)
Total shareholders’ equity		2,308,481		2,177,998
Total liabilities and shareholders’ equity	$	2,450,126	$	2,326,744

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements (Continued)

(22) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Income

(Parent Company Only)

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Income:
Dividends from subsidiaries	$	80,882	$	130,950	$	127,750
Interest income on notes receivable		1,139		357		922
Interest income (loss) on other investments		9,662		(1,126)		(514)
Other		58		5		18
Total income		91,741		130,186		128,176
Expenses:
Interest expense (Debentures)		2,792		3,832		6,435
Provision for credit loss		—		27		—
Other		2,272		1,988		2,749
Total expenses		5,064		5,847		9,184
Income before federal income taxes and equity in undistributed net income of subsidiaries		86,677		124,339		118,992
Income tax expense (benefit)		1,358		(1,339)		(1,878)
Income before equity in undistributed net income of subsidiaries		85,319		125,678		120,870
Equity in undistributed net income of subsidiaries		168,603		41,641		84,234
Net income	$	253,922	$	167,319	$	205,104

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Notes to Consolidated Financial Statements (Continued)

(23) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Cash Flows

(Parent Company Only)

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Operating activities:
Net income	$	253,922	$	167,319	$	205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss		—		27		—
Unrealized (gain) loss on equity securities with readily determinable fair values		(51)		22		(16)
Stock compensation expense		506		743		980
(Decrease) increase in other liabilities		(8,084)		2,467		(58)
Equity in undistributed net income of subsidiaries		(168,603)		(41,641)		(84,234)
Net cash provided by operating activities		77,690		128,937		121,776
Investing activities:
Net decrease (increase) in notes receivable		1,549		—		(12,100)
(Decrease) increase in other assets and other investments		(11,787)		31,289		5,915
Net cash (used in) provided by investing activities		(10,238)		31,289		(6,185)
Financing activities:
Redemption of long-term debt		—		—		(25,774)
Proceeds from stock transactions		2,414		542		1,923
Payments of cash dividends - common		(72,838)		(69,928)		(68,670)
Purchase of treasury stock		(716)		(48,878)		(17,845)
Net cash used in financing activities		(71,140)		(118,264)		(110,366)
(Decrease) increase in cash		(3,688)		41,962		5,225
Cash at beginning of year		66,252		24,290		19,065
Cash at end of year	$	62,564	$	66,252	$	24,290

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Condensed Quarterly Income Statements

(Dollars in Thousands, Except Per Share Amounts)

(Unaudited)

	Fourth		Third		Second		First
	Quarter		Quarter		Quarter		Quarter
2021
Interest income	$	101,058		101,192		97,979		97,874
Interest expense		6,613		6,682		6,671		6,865
Net interest income		94,445		94,510		91,308		91,009
Provision for probable loan losses		2,818		2,801		1,144		1,192
Non-interest income		40,974		47,209		97,906		36,237
Non-interest expense		61,450		69,727		69,954		62,185
Income before income taxes		71,151		69,191		118,116		63,869
Income taxes		14,625		14,592		26,090		13,098
Net income	$	56,526	$	54,599	$	92,026	$	50,771
Per common share:
Basic
Net income	$	0.90	$	0.86	$	1.45	$	0.80
Diluted
Net income	$	0.89	$	0.86	$	1.45	$	0.80

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Condensed Quarterly Income Statements

(Dollars in Thousands, Except Per Share Amounts)
(Unaudited)

		Fourth		Third		Second		First
		Quarter		Quarter		Quarter		Quarter
2020
Interest income	$	96,763		99,983		113,650		116,612
Interest expense		7,384		8,170		9,796		13,769
Net interest income		89,379		91,813		103,854		102,843
Provision for probable loan losses		8,784		8,770		10,989		16,836
Non-interest income		41,736		40,117		33,596		35,130
Non-interest expense		60,388		70,053		73,908		76,982
Income before income taxes		61,943		53,107		52,553		44,155
Income taxes		13,713		10,365		11,044		9,317
Net income	$	48,230	$	42,742	$	41,509	$	34,838
Per common share:
Basic
Net income	$	0.75	$	0.68	$	0.66	$	0.54
Diluted
Net income	$	0.77	$	0.67	$	0.65	$	0.53

80

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Condensed Average Statements of Condition

(Dollars in Thousands)

(Unaudited)

Distribution of Assets, Liabilities and Shareholders’ Equity

The following table sets forth a comparative summary of average interest earning assets and average interest bearing liabilities and related interest yields for the years ended December 31, 2021, 2020, and 2019. Tax-exempt income has not been adjusted to a tax-equivalent basis:

	2021						2020						2019
	Average				Average		Average				Average		Average				Average
	Balance		Interest		Rate/Cost		Balance		Interest		Rate/Cost		Balance		Interest		Rate/Cost
	(Dollars in Thousands)
Assets
Interest earning assets:
Loan, net of unearned discounts:
Domestic	$	7,318,756		355,125	4.85	%	$	7,290,230		372,903	5.12	%	$	6,720,765	$	408,166	6.07	%
Foreign		123,524		4,090	3.31			125,234		4,676	3.73			131,356		5,445	4.15
Investment securities:
Taxable		3,624,903		34,331	0.95			3,213,039		46,095	1.43			3,244,021		72,485	2.23
Tax-exempt		43,906		1,483	3.38			67,487		2,434	3.61			126,792		4,885	3.85
Other		2,449,193		3,074	0.13			767,837		900	0.12			109,965		1,420	1.29
Total interest-earning assets		13,560,282		398,103	2.94	%		11,463,827		427,008	3.72	%		10,332,899		492,401	4.77	%
Non-interest earning assets:
Cash and cash equivalents		204,747						174,557						168,224
Bank premises and equipment, net		442,281						465,267						478,159
Other assets		1,021,644						1,118,561						1,120,706
Less allowance for probable loan losses		(111,791)						(89,558)						(63,328)
Total	$	15,117,163					$	13,132,654					$	12,036,660
Liabilities and Shareholders’ Equity
Interest bearing liabilities:
Savings and interest bearing demand deposits	$	4,297,561		4,110	0.10	%	$	3,537,014		6,358	0.18	%	$	3,288,376	$	16,379	0.50	%
Time deposits:
Domestic		1,077,371		7,636	0.71			1,003,221		10,608	1.06			918,545		10,036	1.09
Foreign		1,083,866		4,019	0.37			1,068,907		8,622	0.81			1,068,653		10,934	1.02
Securities sold under repurchase agreements		411,661		621	0.15			335,392		926	0.28			267,439		2,432	0.91
Other borrowings		436,226		7,654	1.75			547,283		8,773	1.60			627,024		12,413	1.98
Junior subordinated interest deferrable debentures		134,642		2,791	2.07			134,642		3,832	2.85			145,234		6,435	4.43
Total interest bearing liabilities		7,441,327		26,831	0.36	%		6,626,459		39,119	0.59	%		6,315,271		58,629	0.93	%
Non-interest bearing liabilities:
Demand Deposits		5,202,107						4,211,988						3,517,455
Other liabilities		223,599						166,213						147,604
Shareholders’ equity		2,250,130						2,127,994						2,056,330
Total	$	15,117,163					$	13,132,654					$	12,036,660
Net interest income			$	371,272					$	387,889					$	433,772
Net yield on interest earning assets					2.74	%					3.38	%					4.15	%

81

INTERNATIONAL BANCSHARES CORPORATION

OFFICERS AND DIRECTORS

OFFICERS	DIRECTORS
DENNIS E. NIXON	DENNIS E. NIXON
Chairman of the Board and President	Chairman of the Board
	International Bank of Commerce
DALIA F. MARTINEZ
Vice President	JAVIER DE ANDA
	Senior Vice President
JUDITH I. WAWROSKI	B.P. Newman Investment Company
Chief Accounting Officer and Treasurer
	DOUG HOWLAND
MIRTA SALCEDO	Investments
Auditor
	RUDOLPH M. MILES
MARISA V. SANTOS	Investments
Secretary
	LARRY NORTON
HILDA V. TORRES	Investments
Assistant Secretary
	ROBERTO R. RESENDEZ
	Investments
	ANTONIO R. SANCHEZ, JR.
	Chairman of the Board
	Sanchez Oil & Gas Corporation
	Investments
	DIANA G. ZUNIGA
	President and Owner
	Investors Alliance, Inc.

82

EX-21

Exhibit 21

List of Subsidiaries

Subsidiaries of International Bancshares Corporation

Name	State of Incorporation or Organization	Business	% of Ownership
IBC Trading Company	Texas	Export Trading	100	%
IBC Capital Corporation	Texas	Investments	100	%
IBC Charitable and Community Development Corporation	Texas	Community Development	100	%
Premier Tierra Holdings, Inc.	Texas	Liquidating Subsidiary	100	%
International Bank of Commerce	Texas	State Bank	100	%
Commerce Bank	Texas	State Bank	100	%
International Bank of Commerce, Zapata	Texas	State Bank	100	%
International Bank of Commerce, Brownsville	Texas	State Bank	100	%
International Bank of Commerce, Oklahoma	Oklahoma	State Bank	100	%
Diamond Beach Holdings, LLC	Texas	Merchant Banking	100	%
Gulfstar Merchant Banking I, Ltd.	Texas	Merchant Banking	70	%
Gulfstar Merchant Banking II, Ltd.	Texas	Merchant Banking	70	%
Gulfstar Merchant Banking III, Ltd.	Texas	Merchant Banking	50	%
Gulfstar Merchant Banking IV, Ltd.	Texas	Merchant Banking	50	%

EX-23

EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement (No. 333-183958) on Form S-8 of International Bancshares Corporation of our reports dated February 24, 2022, relating to the consolidated financial statements and and to the effectiveness of internal control over financial reporting, appearing in this Annual Report on Form 10-K of International Bancshares Corporation for the year ended December 31, 2021.

/s/ RSM US LLP

Austin, Texas

February 24, 2022

EX-31.A

Exhibit 31a

Certification

I, Dennis E. Nixon, certify that:

1. I have reviewed this Annual Report on Form 10-K of International Bancshares Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 24, 2022
By:	/s/ Dennis E. Nixon Dennis E. Nixon President (Chief Executive Officer)

EX-31.B

Exhibit 31b

Certification

I, Judith I. Wawroski, certify that:

1. I have reviewed this Annual Report on Form 10-K of International Bancshares Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 24, 2022
By:	/s/ Judith I. Wawroski Judith I. Wawroski Treasurer (Principal Financial Officer)

EX-32.A

Exhibit 32a

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of International Bancshares Corporation (the “Company”) on Form 10-K for the year ended December 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dennis E. Nixon, President and Principal Executive Officer of the Company, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)), as applicable; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	President
By:	/s/ Dennis E. Nixon Dennis E. Nixon President
Date: February 24, 2022

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. Section 1350, and not being filed for purposes of Section 18 of the Securities Exchange Act, as amended, and is not to be incorporated by reference into any filing of the Company, whether on and before or after the date hereof, regardless of any general incorporation language in such filing.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.B

Exhibit 32b

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of International Bancshares Corporation (the “Company”) on Form 10-K for the year ended December 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Judith I. Wawroski, Treasurer and Principal Financial Officer of the Company, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)), as applicable; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	Treasurer
By:	/s/ Judith I. Wawroski Judith I. Wawroski Treasurer
Date: February 24, 2022

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. Section 1350, and not being filed for purposes of Section 18 of the Securities Exchange Act, as amended, and is not to be incorporated by reference into any filing of the Company, whether on and before or after the date hereof, regardless of any general incorporation language in such filing.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Document and Entity Information
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	0-09439
Entity Registrant Name	INTERNATIONAL BANCSHARES CORPORATION
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	74-2157138
Entity Address, Address Line One	1200 San Bernardo Avenue
Entity Address, City or Town	Laredo
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78042 - 1359
City Area Code	956
Local Phone Number	722-7611
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	IBOC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Auditor Name	RSM US LLP
Auditor Firm ID	49
Auditor Location	Austin, Texas
Entity Public Float			$ 2,721,106
Entity Common Stock, Shares Outstanding		63,376,041
Entity Central Index Key	0000315709
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false

XML

Consolidated Statements of Condition - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 3,209,242,000	$ 1,997,238,000
Investment securities:
Held to maturity debt securities (Market value of $3,400 on December 31, 2021 and $3,400 on December 31, 2020)	3,400,000	3,400,000
Available for sale debt securities (Amortized cost of $4,254,960 on December 31, 2021 and $3,054,289 on December 31, 2020)	4,213,920,000	3,080,768,000
Equity securities with readily determinable fair values	6,079,000	6,202,000
Total investment securities	4,223,399,000	3,090,370,000
Loans	7,209,151,000	7,541,754,000
Less allowance for credit losses	(110,374,000)	(109,059,000)
Net loans	7,098,777,000	7,432,695,000
Bank premises and equipment, net	447,082,000	479,878,000
Accrued interest receivable	30,593,000	37,881,000
Other investments	296,882,000	254,413,000
Cash surrender value of life insurance policies	297,218,000	292,381,000
Goodwill	282,532,000	282,532,000
Other assets	160,511,000	162,079,000
Total assets	16,046,236,000	14,029,467,000
Deposits:
Demand-non-interest bearing	5,838,526,000	4,715,814,000
Savings and interest bearing demand	4,590,548,000	3,852,505,000
Time	2,188,803,000	2,153,541,000
Total deposits	12,617,877,000	10,721,860,000
Securities sold under repurchase agreements	439,672,000	428,148,000
Other borrowed funds	436,138,000	436,327,000
Junior subordinated deferrable interest debentures	134,642,000	134,642,000
Other liabilities	109,426,000	130,492,000
Total liabilities	13,737,755,000	11,851,469,000
Shareholders' equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,350,977 shares on December 31, 2021 and 96,240,977 shares on December 31, 2020	96,351,000	96,241,000
Surplus	152,144,000	149,334,000
Retained earnings	2,470,710,000	2,289,626,000
Accumulated other comprehensive (loss) income	(31,980,000)	20,825,000
Total shareholders' equity before treasury stock	2,687,225,000	2,556,026,000
Less cost of shares in treasury, 32,979,273 shares on December 31, 2021 and 32,961,289 on December 31, 2020	(378,744,000)	(378,028,000)
Total shareholders' equity	2,308,481,000	2,177,998,000
Total liabilities and shareholders' equity	$ 16,046,236,000	$ 14,029,467,000

XML

Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Held to maturity, Market value (in dollars)	$ 3,400	$ 3,400
Available for sale, Amortized cost (in dollars)	$ 4,254,960	$ 3,054,289
Common shares, par value (in dollars per share)	$ 1.00	$ 1.00
Common shares, Authorized shares	275,000,000	275,000,000
Common shares, issued shares	96,350,977	96,240,977
Treasury, shares	32,979,273	32,961,289

XML

Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans, including fees	$ 359,215,000	$ 377,579,000	$ 413,611,000
Investment securities:
Taxable	34,331,000	46,095,000	72,485,000
Tax-exempt	1,483,000	2,434,000	4,885,000
Other interest income	3,074,000	900,000	1,420,000
Total interest income	398,103,000	427,008,000	492,401,000
Interest expense:
Savings deposits	4,110,000	6,358,000	16,379,000
Time deposits	11,655,000	19,230,000	20,970,000
Securities sold under repurchase agreements	621,000	926,000	2,432,000
Other borrowings	7,654,000	8,773,000	12,413,000
Junior subordinated deferrable interest debentures	2,791,000	3,832,000	6,435,000
Total interest expense	26,831,000	39,119,000	58,629,000
Net interest income	371,272,000	387,889,000	433,772,000
Provision for credit losses	7,955,000	45,379,000	18,843,000
Net interest income after provision for credit losses	363,317,000	342,510,000	414,929,000
Other service charges, commissions and fees
Investment securities transactions, net	(16,000)	(5,000)	(12,000)
Other investments, net	68,807,000	4,920,000	5,985,000
Other income	25,043,000	26,873,000	17,523,000
Total non-interest income	222,326,000	150,579,000	154,826,000
Non-interest expense:
Employee compensation and benefits	123,480,000	130,039,000	145,929,000
Occupancy	26,176,000	24,909,000	28,635,000
Depreciation of bank premises and equipment	25,028,000	28,318,000	28,270,000
Professional fees	7,890,000	12,546,000	17,661,000
Deposit insurance assessments	4,389,000	1,870,000	1,416,000
Net expense, other real estate owned	5,073,000	9,808,000	6,377,000
Amortization of identified intangible assets	0	0	0
Advertising	4,037,000	4,284,000	7,748,000
Software and software maintenance	17,794,000	19,238,000	19,850,000
Other	49,449,000	50,319,000	53,915,000
Total non-interest expense	263,316,000	281,331,000	309,801,000
Income before income taxes	322,327,000	211,758,000	259,954,000
Provision for income taxes	68,405,000	44,439,000	54,850,000
Net income	$ 253,922,000	$ 167,319,000	$ 205,104,000
Basic earnings per common share:
Weighted average number of shares outstanding (in shares)	63,352,737	63,725,819	65,476,606
Net income (in dollars per share)	$ 4.01	$ 2.63	$ 3.13
Fully diluted earnings per common share:
Weighted average number of shares outstanding (in shares)	63,486,366	63,853,135	65,685,684
Net income (in dollars per share)	$ 4.00	$ 2.62	$ 3.12
Services charges on deposit accounts
Non-interest income:
Service charges	$ 66,205,000	$ 61,983,000	$ 72,502,000
Other service charges, commissions and fees, Banking
Non-interest income:
Service charges	54,280,000	48,986,000	50,996,000
Other service charges, commissions and fees, Non-banking
Non-interest income:
Service charges	$ 8,007,000	$ 7,822,000	$ 7,832,000

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 253,922	$ 167,319	$ 205,104
Other comprehensive (loss) income, net of tax:
Net unrealized holding (losses) gains on securities available for sale arising during period (net of tax effects of $(14,040), $4,911 and $15,144)	(52,818)	18,476	56,970
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $3, $1 and $3)	13	4	9
Other comprehensive income, net of tax	(52,805)	18,480	56,979
Comprehensive (loss) income	$ 201,117	$ 185,799	$ 262,083

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net unrealized holding gains (losses) on securities available for sale arising during period, tax effects	$ (14,040)	$ 4,911	$ 15,144
Reclassification adjustment for losses on securities available for sale included in net income, tax effects	$ 3	$ 1	$ 3

XML

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Adjustment	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Adjustment	Total
Balance at Dec. 31, 2018		$ 96,104	$ 145,283		$ 2,064,134	$ (54,634)	$ (311,305)		$ 1,939,582
Balance (in shares) at Dec. 31, 2018	96,104
Increase (decrease) in shareholders' equity
Net income					205,104				205,104
Dividends:
Cash					(68,670)				(68,670)
Purchase of treasury stock							(17,845)		(17,845)
Exercise of stock options		111	1,812						1,923
Exercise of stock options (in shares)	111
Stock compensation expense recognized in earnings			980						980
Other comprehensive (loss) income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments						56,979			56,979
Balance at Dec. 31, 2019		96,215	148,075		2,200,568	2,345	(329,150)		2,118,053
Balance (in shares) at Dec. 31, 2019	96,215
Increase (decrease) in shareholders' equity
Net income					167,319				167,319
Dividends:
Cash					(69,928)				(69,928)
Purchase of treasury stock							(48,878)		(48,878)
Exercise of stock options		26	516						542
Exercise of stock options (in shares)	26
Stock compensation expense recognized in earnings			743						743
Other comprehensive (loss) income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments						18,480			18,480
Balance at Dec. 31, 2020		96,241	149,334	$ (8,333)	2,289,626	20,825	(378,028)	$ (8,333)	2,177,998
Balance (in shares) at Dec. 31, 2020	96,241
Increase (decrease) in shareholders' equity
Net income					253,922				253,922
Dividends:
Cash					(72,838)				(72,838)
Purchase of treasury stock							(716)		(716)
Exercise of stock options		110	2,304						2,414
Exercise of stock options (in shares)	110
Stock compensation expense recognized in earnings			506						506
Other comprehensive (loss) income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments						(52,805)			(52,805)
Balance at Dec. 31, 2021		$ 96,351	$ 152,144		$ 2,470,710	$ (31,980)	$ (378,744)		$ 2,308,481
Balance (in shares) at Dec. 31, 2021	96,351

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Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Dividends (in dollars per share)	$ 1.15	$ 1.10	$ 1.05
Purchase of treasury stock (in shares)	17,984	1,946,228	468,918

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income	$ 253,922	$ 167,319	$ 205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss	7,955	45,379	18,843
Specific reserve, other real estate owned	2,655	1,539	322
Depreciation of bank premises and equipment	25,028	28,318	28,270
Loss (gain) on sale of bank premises and equipment	601	(40)	(237)
Gain on sale of other real estate owned	(170)	(892)	(1,470)
Accretion of investment securities discounts	(702)	(500)	(428)
Amortization of investment securities premiums	36,380	39,039	20,549
Investment securities transactions, net	16	5	12
Unrealized loss (gain) on equity securities with readily determinable fair values	123	(107)	(158)
Proceeds from settlements of claims	2,870
Stock based compensation expense	506	743	980
(Earnings) losses from affiliates and other investments	(68,034)	74	(3,914)
Deferred income taxes	3,542	(3,122)	3,309
Decrease (increase) in accrued interest receivable	7,288	(1,261)	183
Decrease in other assets	25,220	42,571	8,043
(Decrease) increase in other liabilities	(5,519)	(13,932)	32,157
Net cash provided by operating activities	291,681	305,133	311,565
Investing activities:
Proceeds from maturities of securities	1,200	1,075
Proceeds from sales and calls of available for sale securities	5,890	42,350	94,585
Purchases of available for sale securities	(2,856,135)	(1,819,814)	(893,301)
Principal collected on mortgage backed securities	1,612,679	2,058,626	882,479
Net decrease (increase) in loans	309,575	(647,213)	(375,621)
Purchases of other investments	(61,783)	(44,447)	(52,795)
Distributions from other investments	63,356	64,860	44,919
Purchases of bank premises and equipment	(10,390)	(6,725)	(29,590)
Proceeds from sales of bank premises and equipment	11,446	904	1,861
Proceeds from sales of other real estate owned	8,273	6,679	9,405
Net cash used in investing activities	(915,889)	(343,705)	(318,058)
Financing activities:
Net increase in non-interest bearing demand deposits	1,122,712	1,169,909	91,065
Net increase (decrease) in savings and interest bearing demand deposits	738,043	584,676	(408)
Net increase in time deposits	35,262	141,241	38,832
Net increase in securities sold under repurchase agreements	11,524	191,612	6,547
Net decrease in other borrowed funds	(189)	(190,184)	(79,154)
Redemption of long-term debt			(25,774)
Purchase of treasury stock	(716)	(48,878)	(17,845)
Proceeds from stock transactions	2,414	542	1,923
Payments of cash dividends	(72,838)	(69,928)	(68,670)
Net cash provided by (used in) financing activities	1,836,212	1,778,990	(53,484)
Increase (decrease) in cash and cash equivalents	1,212,004	1,740,418	(59,977)
Cash and cash equivalents at beginning of period	1,997,238	256,820	316,797
Cash and cash equivalents at end of period	3,209,242	1,997,238	256,820
Supplemental cash flow information:
Interest paid	29,007	41,975	56,728
Income taxes paid	47,394	34,826	44,089
Non-cash investing and financing activities:
Net transfers from loans to other real estate owned	$ 16,388	4,526	22,015
Establishment of lease liability and right-of-use asset			$ 6,171
Net transfers from bank premises and equipment to other assets		$ 4,260

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2021

Summary of Significant Accounting Policies

(1) Summary of Significant Accounting Policies

Our accounting and reporting policies conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The following is a description of the more significant of those policies.

Consolidation and Basis of Presentation

Our consolidated financial statements include the accounts of the International Bancshares Corporation, its wholly-owned Subsidiary Banks and its wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, IBC Capital Corporation and Diamond Beach Holdings, LLC.  All significant inter-company balances and transactions have been eliminated in consolidation.

We, through our Subsidiary Banks, are primarily engaged in the business of banking, including the acceptance of checking and savings deposits and the making of commercial, real estate, personal, home improvement, automobile and other installment and term loans. Our primary markets are north, south, central, and southeast Texas and the state of Oklahoma. Each of our Subsidiary Banks is very active in facilitating international trade along the United States border with Mexico and elsewhere. Although our loan portfolio is diversified, the ability of our debtors to honor their contracts is primarily dependent upon the economic conditions in our trade area. In addition, the investment portfolio is directly impacted by fluctuations in market interest rates. We are subject to the regulations of certain federal agencies as well as the Texas Department of Banking and the Oklahoma Department of Banking and undergo periodic examinations by those regulatory authorities. Such agencies may require certain standards or impose certain limitations based on their judgments or changes in law and regulations.

We own one insurance-related subsidiary, IBC Insurance Agency, Inc., a wholly owned subsidiary of our Subsidiary Bank, International Bank of Commerce, Laredo. The insurance-related subsidiary does not conduct underwriting activities.

The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the statement of condition and income and expenses for the periods. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the allowance for credit losses (“ACL”).

Subsequent Events

We have evaluated all events or transactions that occurred through the date we issued these financial statements. During this period, we did not have any material recognizable or non-recognizable subsequent events.

Investment Securities

We classify debt securities into one of these categories: held-to-maturity, available-for-sale, or trading. Such classifications are reassessed for appropriate classification at each reporting date. Securities that are intended and expected to be held until maturity are classified as “held-to-maturity” and are carried at amortized cost for financial statement reporting. Securities that are not positively expected to be held until maturity, but are intended to be held for an indefinite period of time are classified as “available-for-sale” or “trading” and are carried at their fair value. Unrealized holding gains and losses are included in net income for those securities classified as “trading”, while unrealized holding gains and losses related to those securities classified as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income (loss) and in shareholders’ equity as accumulated other comprehensive income (loss) until realized. Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income.  In accordance with ASU 2016-13, which we adopted on January 1, 2020, available-for-sale and held-to-maturity debt securities in an unrealized loss position must be evaluated for the underlying cause of the loss.  In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment would be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through

our ACL.  The exception to this process will occur if we intend to sell an impaired available-for-sale debt security or if we will more likely than not be required to sell a credit impaired available-for-sale debt security prior to the value recovering to the security’s amortized cost.  In those situations, the entire credit-related impairment amount would be required to be recognized in earnings.  We have evaluated the debt securities classified as available-for-sale and held-to-maturity at December 31, 2021 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the periods.  We did not maintain any trading securities during the three-year period ended December 31, 2021.

Mortgage-backed securities held at December 31, 2021 and 2020 represent participating interests in pools of long-term first mortgage loans originated and serviced by the issuers of the securities. Mortgage-backed securities are either issued or guaranteed by the U.S. government or its agencies including Freddie Mac, Fannie Mae, Ginnie Mae or other non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U. S. government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities. Market interest rate fluctuations can affect the prepayment speed of principal and the yield on the security.

Premiums and discounts are amortized using the level yield or “interest method” over the terms of the securities. Declines in the fair value of held-to-maturity and available-for sale-securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In determining whether other-than-temporary impairment exists, management considers many factors, including (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) our intent to hold and our determination of whether we will more likely than not be required to sell the security prior to a recovery in fair value. If we determine that (i) we intend to sell the security or (ii) it is more likely than not that we will be required to sell the security before it’s anticipated recovery, the other-than-temporary impairment that is recognized in earnings is equal to the difference between the fair value of the security and our amortized cost of the security. If we determine that we (i) do not intend to sell the security and (ii) we will not be more likely than not required to sell the security before it’s anticipated recovery, the other-than-temporary impairment is segregated into its two components (i) the amount of impairment related to credit loss and (ii) the amount of impairment related to other factors. The difference between the present value of the cash flows expected to be collected and the amortized cost is the credit loss recognized through earnings and an adjustment to the cost basis of the security. The amount of impairment related to other factors is included in other comprehensive income (loss). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.

Equity Securities

Equity securities with readily determinable fair values at December 31, 2021 and December 31, 2020 consist primarily of Community Reinvestment Act funds.  Unrealized gains and losses on the equity securities are recognized in net income.

Provision and Allowance for Credit Losses

We adopted the provisions of Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” on January 1, 2020.  ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset.  Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions.  The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset.  Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense.  Loan losses or recoveries are charged or credited directly to the ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.  

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control, including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.  We believe that the allowance for probable loan losses is adequate.

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial, financial and agricultural or real estate loans are generally considered by management to represent a loss, in whole or part, (i) when an exposure beyond any collateral coverage is apparent, (ii) when no further collection of the portion of the loan so exposed is anticipated based on actual results, (iii) when the credit enhancements, if any, are not adequate, and (iv) when the borrower’s financial condition would indicate so. Generally, unsecured consumer loans are charged-off when 90 days past due.

Loans

Loans are reported at the principal balance outstanding, net of unearned discounts. Interest income on loans is reported on an accrual basis. Loan fees and costs associated with originating the loans are accreted or amortized over the life of the loan using the interest method. We originate mortgage loans that may subsequently be sold to an unaffiliated third party. The loans are not securitized and if sold, are sold without recourse. Loans held for sale are carried at cost and the principal amount outstanding is not significant to the consolidated financial statements.

Doubtful Loans

Doubtful loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. Doubtful loans are measured based on (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price; or (3) the fair value of the collateral if the loan is collateral dependent. Substantially all our doubtful loans are measured at the fair value of the collateral. In limited cases, we may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

Troubled Debt Restructured Loans

Troubled debt restructured loans (“TDR”) are those loans where, for reasons related to a borrower’s difficulty to repay a loan, we grant a concession to the borrower that we would not normally consider in the normal course of business. In accordance with interagency guidance issued in March 2020, certain short-term deferrals are not considered troubled debt restructurings. The original terms of the loan are modified or restructured. The terms that may be modified include a reduction in the original stated interest rate, an extension of the original maturity of the loan, a renewal of the loan at an interest rate below current market rates, a reduction in the principal amount of debt outstanding, a reduction in accrued interest or deferral of interest payments. A loan classified as a TDR is classified as a doubtful loan and included in the doubtful loan totals. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the restructured terms for a reasonable period of time, is at the current market rate, and the ultimate collectability of the outstanding principal and interest is no longer questionable, however, although those loans may be placed back on accrual status, they will continue to be classified as doubtful. Consistent with regulatory guidance, a TDR loan that is subsequently modified, but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

Non-Accrual Loans

The non-accrual loan policy of our Subsidiary Banks is to discontinue the accrual of interest on loans when management determines that it is probable that future interest accruals will be un-collectible. As it relates to consumer loans, management charges-off those loans when the loan is contractually 90 days past due. Under special circumstances, a consumer or non-consumer loan may be more than 90 days delinquent as to interest or principal and not be placed on non-accrual status. This situation generally results when a Subsidiary Bank has a borrower who is experiencing financial difficulties, but not to the extent that requires a restructuring of indebtedness. The majority of this category is composed of loans that are considered to be adequately secured and/or for which there are expected future payments. When a loan is placed on non-accrual status, any interest accrued, not paid is reversed and charged to operations against interest income. As it relates to non-consumer loans that are not 90 days past due, management will evaluate each of these loans to determine if placing the loan on non-accrual status is warranted. Interest income on non-accrual loans is recognized only to the extent payments are received or when, in management’s opinion, the debtor’s financial condition warrants reestablishment of interest accruals.

Other Real Estate Owned and Repossessed Assets

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal). Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL, if necessary. Any subsequent write-downs are charged against other non-interest expense through a valuation allowance. Other real estate owned totaled approximately $35,332,000 and $60,487,000 at December 31, 2021 and 2020, respectively. Other real estate owned is included in other assets.  Repossessed assets consist primarily of non-real estate assets acquired by foreclosure.  Prior to foreclosure, the value of the underlying loan is written down to the fair value of the asset to be repossessed by a charge to the ACL, if necessary.  Repossessed assets are included in other assets on the consolidated financial statements and totaled approximately $4,798,000 and $5,779,000 at December 31, 2021 and 2020, respectively.

Bank Premises and Equipment

Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on straight-line and accelerated methods over the estimated useful lives of the assets. Repairs and maintenance are charged to operations as incurred and expenditures for renewals and betterments are capitalized.   We primarily own all the property we occupy, with the exception of certain branches operating in grocery store or retail shopping centers and certain ATM locations, which are all under operating leases as classified under guidance prior to the issuance of ASU 2016-02, “Leases.”  

Other Investments

Other investments include equity investments in non-financial companies, as well as equity securities with no readily determinable fair market value. Equity investments are accounted for using the equity method of accounting. Equity securities with no readily determinable fair value are accounted for using the cost method.

Revenue Recognition

Our revenue is primarily comprised of net interest income on financial assets and liabilities, which are excluded from the scope of ASU No. 2014-09 to ASC 606, “Revenue from Contracts with Customers.” The remaining non-interest revenue streams were identified and then analyzed under the provisions of the update, to:  (i) identify the contract, (ii) identify the performance obligation, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations, and (v) recognize revenue when the performance obligation was satisfied.  Our non-interest revenue contracts with customers are primarily short term and our performance obligation is satisfied at a single point in time, typically within a single period.  No changes to our existing methods for recognizing revenue were made as a result of the accounting standards update.

Income Taxes

Deferred income tax assets and liabilities are determined using the asset and liability method. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the differences between the book and tax basis of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. We file a consolidated federal income tax return with our subsidiaries.

Recognition of deferred tax assets is based on management’s assessment that the benefit related to certain temporary differences, tax operating loss carry forwards, and tax credits are more likely than not to be realized. A valuation allowance is recorded for the amount of the deferred tax items for which it is more likely than not that the tax benefits will not be realized.

We evaluate uncertain tax positions at the end of each reporting period. We may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. As of December 31, 2021 and 2020, respectively, after evaluating all uncertain tax positions, we have recorded no liability for unrecognized tax benefits at the end of the reporting period. We would recognize any interest accrued on unrecognized tax benefits as other interest expense and penalties as other non-interest expense. During the years ended December 31, 2021, 2020 and 2019, we recognized no interest expense or penalties related to uncertain tax positions.

We file consolidated tax returns in the U.S. Federal jurisdiction and various state jurisdictions. We are no longer subject to U.S. federal or state income tax examinations by tax authorities for years before 2018.

Stock Options

Compensation expense for stock awards is based on the market price of the stock on the measurement date, which is generally the date of grant, and is recognized ratably over the service period of the award. The fair value of stock options granted was estimated using the Black-Sholes-Merton option-pricing model. This model was developed for use in estimating the fair value of publicly traded options that have no vesting restrictions and are fully transferable. Additionally, the model requires the input of highly subjective assumptions. Because our employee stock options have characteristics significantly different from those of publicly traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the Black-Scholes-Merton option-pricing model does not necessarily provide a reliable single measure of the fair value of our stock options.

Net Income Per Share

Basic Earnings Per Share (“EPS”) is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares outstanding during the reporting period. The dilutive effect of stock options is considered in earnings per share calculations, if dilutive, using the treasury stock method.

Goodwill and Identified Intangible Assets

Goodwill represents the excess of costs over fair value of assets of businesses acquired. Goodwill is tested for impairment at least annually or on an interim basis if an event triggering impairment may have occurred. As of October 1, 2021, after completing goodwill testing, we have determined that no goodwill impairment exists.

Identified intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Our identified intangible assets relate to core deposits and contract rights. As of December 31, 2021, we have determined that no impairment of identified intangibles exists. Identified intangible assets with definite useful lives are amortized on an accelerated basis over their estimated life. See Note 6—Goodwill and Other Intangible Assets.

Impairment of Long-Lived Assets

Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the statement of condition and reported at the lower of the carrying value or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the statement of condition.

Consolidated Statements of Cash Flows

For purposes of the consolidated statements of cash flows, we consider all short-term investments with a maturity at date of purchase of three months or less to be cash equivalents. Also, we report transactions related to deposits and loans to customers on a net basis.

Accounting for Transfers and Servicing of Financial Assets

We account for transfers and servicing of financial assets and extinguishments of liabilities based on the application of a financial-components approach that focuses on control. After a transfer of financial assets, we recognize the financial and servicing assets we control and liabilities we have incurred, derecognize financial assets when control has been surrendered and derecognize liabilities when extinguished. We have retained mortgage servicing rights in connection with the sale of mortgage loans. Because we may not initially identify loans as originated for resale, all loans are initially treated as held for investment. The value of the mortgage servicing rights are reviewed periodically for impairment and are amortized in proportion to, and over the period of estimated net servicing income or net servicing losses. The value of the mortgage servicing rights is not significant to the consolidated statements of condition.

Segments of an Enterprise and Related Information

We operate as one segment. The operating information used by our chief executive officer for purposes of assessing performance and making operating decisions is the consolidated financial statements presented in this report.

We have five active operating subsidiaries, namely, the Subsidiary Banks. We apply the provisions of ASC Topic 280, “Segment Reporting,” in determining our reportable segments and related disclosures.

Comprehensive Income (Loss)

Comprehensive income (loss) consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale.

Advertising

Advertising costs are expensed as incurred.

Reclassifications

Certain amounts in the prior year’s presentations have been reclassified to conform to the current presentation. These reclassifications had no effect on previously reported net income or shareholders’ equity.

New Accounting Standards

In June 2016, the FASB issued Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses.” The update amends existing standards for accounting for credit losses for financial assets. The update requires that the expected credit losses on the financial instruments held as of the end of the period being reported be measured based on historical experience, current conditions, and reasonable and supportable forecasts. The update also expands the required disclosures related to significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s financial assets. The update also amended the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The impact of the adoption of the standard is to be recorded as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The accounting standard was effective for us on January 1, 2020. The task force formed last year, which includes key members of the teams that work with the calculation of the allowance for probable loan losses plus members representing the corporate accounting and risk management areas, has worked with the implementation of the update and validation to complete our model/tool. Based on the composition of the portfolio at December 31, 2019 and after finalizing the methodology, the adoption of the update increased our allowance for probable loan losses (referred to as the ACL under ASU 2016-13), by approximately 17.2%, resulting in a cumulative-effect adjustment to retained earnings of approximately $8.3 million, net of tax.  Please refer to Note 4 – Allowance for Credit Losses and the Critical Accounting Policies discussion in Management’s Discussion and Analysis.  

In December 2019, the FASB issued Accounting Standards Update No. 2019-12, to ASC 740, “Income Taxes.”  The update amends existing guidance with the intention of simplifying the accounting for income taxes.  Specifically, the update removes some exceptions in existing guidance around intraperiod tax allocations, recognition of deferred tax liabilities for certain changes in investments in foreign subsidiaries and to the general methodology for calculating taxes on interim periods when year to date losses exceed the anticipated loss for the year.  Additionally, the update clarifies and provides more guidance with respect to the classification of franchise or similar taxes, requirements to evaluate when a step up in the tax basis of goodwill should be considered, eliminates the requirement that a consolidated entity allocate a portion of current and deferred tax expense to a legal entity that is not subject to tax, requires that an entity reflect the effect of changes in tax laws and tax rates in the effective tax rate computed in the interim period that includes the enactment date and makes minor changes for taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method.  The update is effective for fiscal years beginning after December 15, 2020.  The adoption of the update did not have a significant impact on our consolidated financial statements.  

In March 2020, the FASB issued Accounting Standards Update No. 2020-04, “Reference Rate Reform (Topic 848):  Facilitation of the Effects of Reference Rate Reform on Financial Reporting.”  The update provides optional guidance for a limited period of time to ease the potential burden in accounting for and recognizing the effects of reference

rate reform on financial reporting.  The practical expedients and exceptions in the update apply only to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met.  The update does not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022 that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.  

In January 2021, the FASB issued Accounting Standards Update No. 2021-01, “Reference Rate Reform (Topic 848): Scope.”  The update clarifies the applicability of the practical expedients and exceptions issued in ASU 2020-04 to derivative instruments that use an interest rate for margining, discounting or contract price alignment that is modified as a result of reference rate reform.  The update is intended to capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.    

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments

12 Months Ended

Dec. 31, 2021

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments

(2) Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments

In accordance with ASU 2016-13, which we adopted on January 1, 2020, available-for-sale and held-to-maturity debt securities in an unrealized loss position must be evaluated for the underlying cause of the loss.  In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment would be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through our ACL.  The exception to this process will occur if we intend to sell an impaired available-for-sale debt security or if we will more likely than not be required to sell a credit impaired available-for-sale debt security prior to the value recovering to the security’s amortized cost.  In those situations, the entire credit-related impairment amount would be required to be recognized in earnings.  We have evaluated the debt securities classified as available-for-sale and held-to-maturity at December 31, 2021 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the period.  Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income.

The amortized cost and estimated fair value by type of investment security at December 31, 2021 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale Debt Securities
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	4,213,441	$	14,159	$	(58,237)	$	4,169,363	$	4,169,363
Obligations of states and political subdivisions		41,519		3,038		—		44,557		44,557
Total investment securities	$	4,254,960	$	17,197	$	(58,237)	$	4,213,920	$	4,213,920

(1) Included in the carrying value of residential mortgage- backed securities are $824,474 of mortgage-backed securities issued by Ginnie Mae and $3,344,889 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

The amortized cost and estimated fair value of investment securities at December 31, 2021, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	Held to Maturity				Available for Sale
	Amortized		Estimated		Amortized		Estimated
	Cost		fair value		Cost		fair value
	(Dollars in Thousands)
Due in one year or less	$	2,200	$	2,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		—		—
Due after ten years		—		—		41,519		44,557
Residential mortgage-backed securities		—		—		4,213,441		4,169,363
Total investment securities	$	3,400	$	3,400	$	4,254,960	$	4,213,920

The amortized cost and estimated fair value by type of investment security at December 31, 2020 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,006,592	$	32,701	$	(9,339)	$	3,029,954	$	3,029,954
Obligations of states and political subdivisions		47,697		3,131		(14)		50,814		50,814
Total investment securities	$	3,054,289	$	35,832	$	(9,353)	$	3,080,768	$	3,080,768

(1) Included in the carrying value of residential mortgage- backed securities are $371,407 of mortgage-backed securities issued by Ginnie Mae, $2,658,247 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

Residential mortgage-backed securities are securities issued by Freddie Mac, Fannie Mae, Ginnie Mae or non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. government. Investments in mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in early September 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae and Freddie Mac are rated consistently as AAA rated securities.

The amortized cost and fair value of available for sale investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $1,519,652,000 and $1,497,929,000, respectively, at December 31, 2021.

Proceeds from the sale and call of securities available-for-sale were $5,890,000, $42,350,000 and $94,585,000 during 2021, 2020 and 2019, respectively, which amounts included $0, $0 and $0 of mortgage-backed securities. Gross gains of $0, $1,000 and $3,000, and gross losses of $16,000, $6,000 and $15,000 were realized on the sales and calls in 2021, 2020 and 2019, respectively.

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)
	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous loss position, at December 31, 2020 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	1,462,232	$	(9,339)	$	—	$	—	$	1,462,232	$	(9,339)
Obligations of states and political subdivisions		—		—		757		(14)		757		(14)
	$	1,462,232	$	(9,339)	$	757	$	(14)	$	1,462,989	$	(9,353)

The unrealized losses on investments in residential mortgage-backed securities are primarily caused by changes in market interest rates. We have no intent to sell and more likely than not be required to sell before a market price recovery or maturity of the securities; therefore, it is our conclusion that the investments in residential mortgage-backed securities issued by Freddie Mac, Fannie Mae and Ginnie Mae are not considered other-than-temporarily impaired.

Equity securities with readily determinable fair values consist primarily of Community Reinvestment Act funds. At December 31, 2021 and December 31, 2020, the balance in equity securities with readily determinable fair values recorded at fair value were $6,079,000 and $6,202,000, respectively. The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities for the twelve months ended December 31, 2021, 2020 and 2019:

	Year Ended
	December 31, 2021
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	(123)
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	(123)

	Year Ended
	December 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	107
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	107

	Year Ended
	December 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	158
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	158

Other investments include equity and merchant banking investments held by our subsidiary banks and non-banking entities. During the second quarter of 2021, one of our non-bank subsidiaries sold an equity interest in a merchant banking investment resulting in a gain on sale included in other investment income on the consolidated statements of income.

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Loans

12 Months Ended

Dec. 31, 2021

Loans

(3) Loans

A summary of loans, by loan type at December 31, 2021 and 2020 is as follows:

	December 31,		December 31,
	2021		2020
	(Dollars in Thousands)
Commercial, financial and agricultural	$	4,497,444	$	4,516,288
Real estate - mortgage		867,831		999,144
Real estate - construction		1,668,113		1,846,757
Consumer		40,966		40,595
Foreign		134,797		138,970
Total loans	$	7,209,151	$	7,541,754

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Allowance for Credit Losses

12 Months Ended

Dec. 31, 2021

Allowance for Credit Losses

(4) Allowance for Credit Losses

We adopted the provisions of ASU 2016-13 on January 1, 2020 on a modified retrospective basis. Results and information regarding our ACL included in this Note are calculated and presented in accordance with that accounting standards update. Results and information prior to January 1, 2020 are calculated and presented in accordance with previously applicable U.S. GAAP.

ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset. Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions. The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset. Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense. Loan losses or recoveries are charged or credited directly to the

ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.

The estimation of the ACL is based on a loss-rate methodology that measures lifetime losses on loan pools that have similar risk characteristics. Loans that do not have similar risk characteristics are evaluated on an individual basis. The segmentation of the loan portfolio into pools requires a balancing process between capturing similar risk characteristics and containing sufficient loss history to provide meaningful results.  Our segmentation starts at the general loan category with further sub-segmentation based on collateral types that may be of meaningful size and/or may contain sufficient differences in risk characteristics based on management’s judgement that would warrant further segmentation. The general loan categories along with primary risk characteristics used in our calculation are as follows:

Commercial and industrial loans. This category includes loans extended to a diverse array of businesses for working capital or equipment purchases. These loans are mostly secured by the collateral pledged by the borrower that is directly related to the business activities of the company such as equipment, accounts receivable and inventory. The borrower’s abilities to generate revenues from equipment purchases, collect accounts receivable, and to turn inventory into sales are risk factors in the repayment of the loan. A small portion of this loan category is related to loans secured by oil & gas production and loans secured by aircraft.

Construction and land development loans. This category includes the development of land from unimproved land to lot development for both residential and commercial use and vertical construction across residential and commercial real estate classes. These loans carry risk of repayment when projects incur cost overruns, have an increase in the price of construction materials, encounter zoning, entitlement and environmental issues, or encounter other factors that may affect the completion of a project on time and on budget. Additionally, repayment risk may be negatively impacted when the market experiences a deterioration in the value of real estate. Risks specifically related to 1-4 family development loans also include mortgage rate risk and the practice by the mortgage industry of more restrictive underwriting standards, which inhibits the buyer from obtaining long term financing creating excessive housing and lot inventory in the market.

Commercial real estate loans. This category includes loans secured by farmland, multifamily properties, owner occupied commercial properties, and non-owner occupied commercial properties.  Owner occupied commercial properties include warehouses often along the border for import/export operations, office space where the borrower is the primary tenant, restaurants and other single-tenant retail. Non-owner occupied commercial properties include hotels, retail centers, office and professional buildings, and leased warehouses. These loans carry risk of repayment when market values deteriorate, the business experiences turnover in key management, the business has an inability to attract or keep occupancy levels stable, or when the market experiences an exit of a specific business type that is significant to the local economy, such as a manufacturing plant.

1-4 family mortgages. This category includes both first and second lien mortgages for the purpose of home purchases or refinancing of existing mortgage loans. A small portion of this loan category is related to home equity lines of credits, lots purchases, and home construction.  Loan repayments may be affected by unemployment or underemployment and deteriorating market values of real estate.

Consumer loans. This category includes deposit secured, vehicle secured, and unsecured loans, including overdrafts, made to individuals. Repayment is primarily affected by unemployment or underemployment.

The loan pools are further broken down using a risk-based segmentation based on internal classifications for commercial loans and past due status for consumer mortgage loans.  Non-mortgage consumer loans are evaluated as one segment.  On a weekly basis, commercial loan past due reports are reviewed by the credit quality committee to determine if a loan has any potential problems and if a loan should be placed on our internal Watch List report. Additionally, our credit department reviews the majority of our loans for proper internal classification purposes regardless of whether they are past due and segregates any loans with potential problems for further review. The credit department will discuss the potential problem loans with the servicing loan officers to determine any relevant issues that were not discovered in the evaluation. Also, an analysis of loans that is provided through examinations by regulatory authorities is considered in the

review process. After the above analysis is completed, we will determine if a loan should be placed on an internal Watch List report because of issues related to the analysis of the credit, credit documents, collateral and/or payment history.

Our internal Watch List report is segregated into the following categories: (i) Pass, (ii) Economic Monitoring, (iii) Special Review, (iv) Watch List—Pass, or (v) Watch List—Substandard, and (vi) Watch List—Doubtful.  The loans placed in the Special Review category and lower rated credits reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. Credits in those categories are reviewed and discussed on a regular basis, no less frequently than quarterly, with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Pass category and lower rated credits reflect our opinion that the credit contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” Credits in this category are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Substandard category are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we may sustain some future loss if such weaknesses are not corrected. The loans placed in the Watch List—Doubtful category have shown defined weaknesses and it is likely, based on current information and events, that we will be unable to collect all principal and/or interest amounts contractually due.  Watch List—Doubtful loans are placed on non-accrual when they are moved to that category.  

For the purposes of the ACL, in order to maintain segments with sufficient history for meaningful results, the credits in the Pass and Economic Monitoring categories are aggregated, the credits in the Special Review and Watch List—Pass credits are aggregated, and the credits in the Watch List—Substandard category remain in their own segment.  For loans that are classified as Watch List—Doubtful, management evaluates these credits in accordance with ASC 310-10, “Receivables,” and, if deemed necessary, a specific reserve is allocated to the loan. The specific reserve allocated under ASC 310-10, is based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) net realizable value of the fair value of the collateral if the loan is collateral dependent. Substantially all of our loans evaluated as Watch List—Doubtful under ASC 310-10 are measured using the fair value of collateral method. In rare cases, we may use other methods to determine the specific reserve of a loan under ASC 310-10 if such loan is not collateral dependent.

Within each collectively evaluated pool, the robustness of the lifetime historical loss-rate is evaluated and, if needed, is supplemented with peer loss rates through a model risk adjustment.  Certain qualitative loss factors are then evaluated to incorporate management’s two-year reasonable and supportable forecast period followed by a reversion to the pool’s average lifetime loss-rate. Those qualitative loss factors are: (i) trends in portfolio volume and composition, (ii) volume and trends in classified loans, delinquencies, non-accruals and TDR’s, (iii) concentration risk, (iv) trends in underlying collateral value, (v) changes in policies, procedures, and strategies, and (vi) economic conditions.  Qualitative factors also include potential losses stemming from operational risk factors arising from fraud, natural disasters, pandemics and geopolitical events.  Should any of the factors considered by management in evaluating the adequacy of the ACL change, our estimate could also change, which could affect the level of future credit loss expense.

We have elected to not measure an ACL for accrued interest receivable given our timely approach in identifying and writing off uncollectible accrued interest.  An ACL for off-balance sheet exposure is derived from a projected usage rate of any unfunded commitment multiplied by the historical loss rate, plus model risk adjustment, if any, of the on-balance sheet loan pools.

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control,

including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.

A summary of the changes in the allowance for probable loan losses by loan class is as follows:

	December 31, 2021
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059
Losses charge to allowance		(8,083)		(2)		(364)		—		(373)		(25)		(176)		(1)		(9,024)
Recoveries credited to allowance		1,943		—		171		—		60		164		46		—		2,384
Net losses charged to allowance		(6,140)		(2)		(193)		—		(313)		139		(130)		(1)		(6,640)
Provision (credit) charged to operations		7,410		(2,220)		5,847		(1,760)		512		(1,955)		111		10		7,955
Balance at December 31, 2021	$	23,178	$	35,390	$	35,654	$	3,291	$	4,073	$	7,754	$	272	$	762	$	110,374

	December 31, 2020
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278
Adoption of ASU 2016-13		4,247		13,391		(4,292)		(355)		(1,580)		(429)		(225)		(410)		10,347
Losses charge to allowance		(8,936)		(19)		(55)		—		(160)		(124)		(280)		—		(9,574)
Recoveries credited to allowance		2,191		35		117		—		21		186		69		10		2,629
Net losses charged to allowance		(6,745)		16		62		—		(139)		62		(211)		10		(6,945)
Provision (credit) charged to operations		13,261		6,053		17,697		3,620		1,831		2,402		185		330		45,379
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059

	December 31, 2019
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2018	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charge to allowance		(14,412)		(39)		(7,353)		—		(201)		(435)		(487)		(1)		(22,928)
Recoveries credited to allowance		2,196		113		318		—		26		286		40		—		2,979
Net losses charged to allowance		(12,216)		74		(7,035)		—		(175)		(149)		(447)		(1)		(19,949)
Provision (credit) charged to operations		10,765		2,955		4,215		(22)		470		(35)		542		(47)		18,843
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278

The allowance for credit losses is a reserve established through a provision for credit losses charged to expense, which represents management’s best estimate of probable loan losses when evaluating loans (i) individually or (ii) collectively. The credit loss expense charged to operations for the twelve months ended December 31, 2021 has decreased from the same period of 2020 as economic conditions in 2021 stabilized and in some cases, improved, impacting certain segments of our loan portfolio.  The stabilization and improvement means that the pool specific qualitative loss factors used in the December 31, 2020 ACL calculation have remained constant in the December 31, 2021 ACL calculation,

which positively impacted the calculation and resulted in a decrease in the credit loss expense for 2021.  The credit loss expense charged to operations increased  for the year ended December 31, 2020 and can be primarily attributed to the deteriorating economic conditions occurring in those periods as a result of COVID-19 and the impact of those conditions on certain segments of our ACL calculation for those periods.  We adopted the provisions of ASU 2016-13 on January 1, 2020, resulting in a transition from the long-standing incurred loss model to an expected credit loss model. The increase in provision for probable loan losses charged to expense and charge-offs charged to the allowance for probable loan losses for the year ended December 31, 2019 can be primarily attributed to a relationship that is secured by multiple pieces of real property on which car dealerships are operated.  The relationship began deteriorating in the fourth quarter of 2018, triggered by significant fraud by a high level insider of the car dealership resulting in the dealerships unexpectedly filing for bankruptcy and creating an exposure for potential loss since the operations of the dealerships were the source of repayment from the borrower.  The relationship further deteriorated in the first quarter of 2019 after the sponsor of the court approved debtor in possession plan discontinued its role in the process and thus did not fulfill its obligation to assume full responsibility of the accrued and unpaid interest.  Although the relationship is secured by real property (the dealerships’ real estate), the real property has specialized use, contributing to the potential exposure for probable loss.  During the first quarter of 2019, in light of the circumstances and management’s evaluation of the relationship, the decision was made to place the relationship on impaired, non-accrual status and place a specific reserve on the relationship in the amount of $9.5 million.  During the second quarter of 2019, management continued to evaluate the relationship and decided to foreclose on the underlying real estate collateral, resulting in a charge-off of approximately $9.5 million, reflected in the tables above as part of the Commercial and commercial real estate: farmland and commercial categories.  

The table below provides additional information on the balance of loans individually or collectively evaluated for impairment and their related allowance, by loan class:

	December 31, 2021
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	29	$	1,501,554	$	23,149
Commercial real estate: other construction & land development		589		70		1,667,524		35,320
Commercial real estate: farmland & commercial		562		—		2,710,494		35,654
Commercial real estate: multifamily		131		—		284,405		3,291
Residential: first lien		87		—		403,571		4,073
Residential: junior lien		—		—		464,173		7,754
Consumer		—		—		40,966		272
Foreign		—		—		134,797		762
Total	$	1,667	$	99	$	7,207,484	$	110,275

	December 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,189	$	209	$	1,784,747	$	21,699
Commercial real estate: other construction & land development		17,496		70		1,829,261		37,542
Commercial real estate: farmland & commercial		439		—		2,288,869		30,000
Commercial real estate: multifamily		134		—		440,910		5,051
Residential: first lien		151		—		404,968		3,874
Residential: junior lien		38		—		593,987		9,570
Consumer		—		—		40,595		291
Foreign		—		—		138,970		753
Total	$	19,447	$	279	$	7,522,307	$	108,780

Loans accounted for on a non-accrual basis at December 31, 2021, 2020 and 2019 amounted to $1,921,000, $19,822,000 and $4,886,000, respectively.  The decrease in non-accrual Commercial loans at December 31, 2021 compared to December 31, 2020 can be attributed to a relationship secured by commercial property that was placed on non-accrual in the fourth quarter of 2020 and foreclosed upon in the first quarter of 2021.  The effect of such non-accrual loans reduced interest income by approximately $169,000, $694,000 and $340,000 for the years ended December 31, 2021, 2020 and 2019, respectively. Amounts received on non-accruals are applied, for financial accounting purposes, first to principal and then to interest after all principal has been collected. Accruing loans contractually past due 90 days or more as to principal or interest payments at December 31, 2021, 2020 and 2019 amounted to approximately $8,642,000, $8,238,000 and $59,705,000, respectively.  

The table below provides additional information on loans accounted for on a non-accrual basis by loan class:

	December 31, 2021		December 31, 2020
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	1,189
Commercial real estate: other construction & land development		589		17,496
Commercial real estate: farmland & commercial		562		439
Commercial real estate: multifamily		131		134
Residential: first lien		341		526
Residential: junior lien		—		38
Total non-accrual loans	$	1,921	$	19,822

Doubtful loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. We have identified these loans through our normal loan review procedures. Doubtful loans are measured based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) the fair value of the collateral if the loan is collateral dependent. Substantially all of our doubtful loans are measured at the fair value of the collateral. In limited cases, we may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

The following table details loans accounted for as “troubled debt restructuring,” segregated by loan class.  Loans accounted for as troubled debt restructuring are included in impaired loans.

	December 31, 2021		December 31, 2020
		(Dollars in Thousands)
Domestic
Residential: first lien	$	2,254	$	4,078
Residential: junior lien		105		521
Consumer		878		989
Foreign		16		233
Total troubled debt restructuring	$	3,253	$	5,821

We are actively working with our customers affected by the current economic crisis arising from COVID-19.  We have been offering and are prepared to continue to offer assistance in accordance with current regulatory guidance.  That includes continuously reaching out to our customers and, in some cases, offering short-term payment deferral plans.  In accordance with the Coronavirus Aid, Relief and Economic Security (“CARES”) Act or interagency regulatory guidance, these short-term deferrals are not considered troubled debt restructurings.  As of February 18, 2022, approximately $123,194,000 in loans with some degree of payment deferrals were in our system. In accordance with interagency regulatory guidance these short-term deferrals are not considered troubled debt restructurings. The $123,194,000 is comprised primarily of loans related to industries that have been significantly impacted by the COVID-19 pandemic, including the hospitality sector, special use facilities, including child-care centers, and retail developments.  

With the passage of the Paycheck Protection Program (“PPP”), administered by the Small Business Association (“SBA”), we assisted our customers with applications for loans through the PPP.  PPP loans earn interest at 1% and PPP loans made prior to June 5, 2020 have a two-year term, while those made after June 5, 2020 have a five-year term;  however, PPP loans also include forgiveness provisions that we expect most customers will utilize.  Customers began submitting applications for the forgiveness program in the third quarter of 2020.  PPP loans were intended to support up to 24 weeks of payroll and certain other costs to help those businesses remain viable and allow their employees to pay their bills.  As of February 18, 2022, we had 968 PPP loans totaling approximately $71,149,000 outstanding.  The PPP loans are fully guaranteed by the U.S. government through the SBA.      

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial and industrial or real estate loans are generally considered by management to represent a loss, in whole or part, when an exposure beyond any collateral coverage is apparent and when no further collection of the loss portion is anticipated based on the borrower’s financial condition and general economic conditions in the borrower’s industry. Generally, unsecured consumer loans are charged-off when 90 days past due.

While management considers that it is generally able to identify borrowers with financial problems reasonably early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting loan losses. The determination that a loan is likely to be uncollectible and that it should be wholly or partially charged-off as a loss is an exercise of judgment. Similarly, the determination of the adequacy of the ACL (formerly allowance for probable loan losses) can be made only on a subjective basis. It is the judgment of our management that the ACL at December 31, 2021 and December 31, 2020, was adequate to absorb expected losses from loans in the portfolio at that date.

The following table presents information regarding the aging of past due loans by loan class:

	December 31, 2021
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
	(Dollars in Thousands)
Domestic
Commercial	$	2,534	$	303	$	577	$	577	$	3,414	$	1,498,438	$	1,501,852
Commercial real estate: other construction & land development		499		334		188		188		1,021		1,667,092		1,668,113
Commercial real estate: farmland & commercial		18,164		172		644		307		18,980		2,692,076		2,711,056
Commercial real estate: multifamily		—		—		—		—		—		284,536		284,536
Residential: first lien		2,342		1,212		5,129		4,937		8,683		394,975		403,658
Residential: junior lien		747		115		1,055		1,055		1,917		462,256		464,173
Consumer		231		88		4		4		323		40,643		40,966
Foreign		1,319		232		1,574		1,574		3,125		131,672		134,797
Total past due loans	$	25,836	$	2,456	$	9,171	$	8,642	$	37,463	$	7,171,688	$	7,209,151

	December 31, 2020
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
		(Dollars in Thousands)
Domestic
Commercial	$	1,931	$	1,109	$	563	$	318	$	3,603	$	1,782,333	$	1,785,936
Commercial real estate: other construction & land development		1,059		854		16,587		—		18,500		1,828,257		1,846,757
Commercial real estate: farmland & commercial		2,435		219		186		186		2,840		2,286,468		2,289,308
Commercial real estate: multifamily		126		—		—		—		126		440,918		441,044
Residential: first lien		2,399		926		6,165		5,890		9,490		395,629		405,119
Residential: junior lien		561		247		1,197		1,197		2,005		592,020		594,025
Consumer		318		71		79		79		468		40,127		40,595
Foreign		478		180		568		568		1,226		137,744		138,970
Total past due loans	$	9,307	$	3,606	$	25,345	$	8,238	$	38,258	$	7,503,496	$	7,541,754

The increase in commercial real estate:  farmland and commercial loans past due 30 – 59 days can be attributed to a relationship secured by a retail center.  The decrease in commercial real estate:  other construction & land development loans past due 90 days or greater at December 31, 2021 compared to December 31, 2020 can be primarily attributed to a relationship secured by commercial property which was foreclosed upon in the first quarter of 2021.  Our internal classified report is segregated into the following categories: (i) “Special Review Credits,” (ii) “Watch List—Pass Credits,” or (iii) “Watch List—Substandard Credits.” The loans placed in the “Special Review Credits” category reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. The “Special Review Credits” are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the “Watch List—Pass Credits” category reflect our opinion that the credit contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” The “Watch List—Pass Credits” are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the “Watch List—Substandard Credits” classification are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we could sustain some future loss if such weaknesses are not corrected.

A summary of the loan portfolio by credit quality indicator by loan class is as follows:

		2021	2020		2019		2018		2017		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2021
Domestic
Commercial
Pass	$	1,041,763	$	167,691	$	77,579	$	58,439	$	37,104	$	5,144	$	1,387,720
Special Review		74,559		497		139		81		—		—		75,276
Watch List - Pass		33,920		—		—		—		—		10		33,930
Watch List - Substandard		3,581		273		716		57		—		1		4,628
Watch List - Doubtful		224		—		—		—		74		—		298
Total Commercial	$	1,154,047	$	168,461	$	78,434	$	58,577	$	37,178	$	5,155	$	1,501,852
Commercial real estate: other construction & land development
Pass	$	966,946	$	312,389	$	308,673	$	37,124	$	16,642	$	2,439	$	1,644,213
Special Review		—		—		211		—		—		—		211
Watch List - Pass		—		23,100		—		—		—		—		23,100
Watch List - Doubtful		485		104		—		—		—		—		589
Total Commercial real estate: other construction & land development	$	967,431	$	335,593	$	308,884	$	37,124	$	16,642	$	2,439	$	1,668,113
Commercial real estate: farmland & commercial
Pass	$	1,001,335	$	680,777	$	288,333	$	417,353	$	96,096	$	97,119	$	2,581,013
Special Review		929		1,292		—		3,448		61		—		5,730
Watch List - Pass		18,790		44,059		—		—		94		1		62,944
Watch List - Substandard		—		54,097		3,899		—		2,355		456		60,807
Watch List - Doubtful		—		224		337		—		—		1		562
Total Commercial real estate: farmland & commercial	$	1,021,054	$	780,449	$	292,569	$	420,801	$	98,606	$	97,577	$	2,711,056
Commercial real estate: multifamily
Pass	$	133,152	$	40,766	$	78,609	$	10,632	$	14,217	$	7,029	$	284,405
Watch List - Doubtful		—		131		—		—		—		—		131
Total Commercial real estate: multifamily	$	133,152	$	40,897	$	78,609	$	10,632	$	14,217	$	7,029	$	284,536
Residential: first lien
Pass	$	128,742	$	52,725	$	57,249	$	49,259	$	29,477	$	85,838	$	403,290
Watch List - Substandard		56		—		103		—		122		—		281
Watch List - Doubtful		—		87		—		—		—		—		87
Total Residential: first lien	$	128,798	$	52,812	$	57,352	$	49,259	$	29,599	$	85,838	$	403,658
Residential: junior lien
Pass	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Total Residential: junior lien	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Residential: junior lien
Consumer
Pass	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Total Consumer	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Foreign
Pass	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Foreign	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Loans	$	3,641,975	$	1,540,327	$	885,554	$	616,037	$	241,896	$	283,362	$	7,209,151

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2020
Domestic
Commercial
Pass	$	1,168,671	$	240,869	$	145,670	$	85,434	$	13,901	$	10,000	$	1,664,545
Special Review		75,638		—		—		—		—		—		75,638
Watch List - Pass		39,886		11		—		3		—		17		39,917
Watch List - Substandard		3,360		683		289		—		315		—		4,647
Watch List - Doubtful		777		161		92		159		—		—		1,189
Total Commercial	$	1,288,332	$	241,724	$	146,051	$	85,596	$	14,216	$	10,017	$	1,785,936
Commercial
Commercial real estate: other construction & land development
Pass	$	773,165	$	576,707	$	320,308	$	78,174	$	10,534	$	3,343	$	1,762,231
Special Review		20,828		21,650		—		—		—		—		42,478
Watch List - Pass		23,101		1,451		—		—		—		—		24,552
Watch List - Doubtful		16,702		794		—		—		—		—		17,496
Total Commercial real estate: other construction & land development	$	833,796	$	600,602	$	320,308	$	78,174	$	10,534	$	3,343	$	1,846,757
Commercial real estate: farmland & commercial
Pass	$	884,070	$	373,993	$	386,268	$	189,639	$	202,500	$	116,729	$	2,153,199
Special Review		3,041		—		4,758		177		3,218		—		11,194
Watch List - Pass		61,637		942		277		80		—		—		62,936
Watch List - Substandard		53,809		4,986		—		2,269		475		1		61,540
Watch List - Doubtful		—		202		—		—		—		237		439
Total Commercial real estate: farmland & commercial	$	1,002,557	$	380,123	$	391,303	$	192,165	$	206,193	$	116,967	$	2,289,308
Commercial real estate: multifamily
Pass	$	74,577	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	440,910
Watch List - Doubtful		134		—		—		—		—		—		134
Total Commercial real estate: multifamily	$	74,711	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	441,044
Residential: first lien
Pass	$	81,004	$	62,165	$	72,299	$	54,593	$	29,250	$	105,463	$	404,774
Watch List - Pass		—		14		131		—		—		—		145
Watch List - Substandard		—		—		—		—		49		—		49
Watch List - Doubtful		86		—		—		—		—		65		151
Total Residential: first lien	$	81,090	$	62,179	$	72,430	$	54,593	$	29,299	$	105,528	$	405,119
Residential: junior lien
Pass	$	196,308	$	108,276	$	61,636	$	75,056	$	56,705	$	94,454	$	592,435
Special Review		740		—		—		812		—		—		1,552
Watch List- Doubtful		—		—		38		—		—		—		38
Total Residential: junior lien	$	197,048	$	108,276	$	61,674	$	75,868	$	56,705	$	94,454	$	594,025
Consumer
Pass	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Total Consumer	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Foreign
Pass	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Foreign	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Loans	$	3,601,680	$	1,627,511	$	1,087,031	$	556,923	$	327,336	$	341,273	$	7,541,754

The decrease in Commercial Real Estate:  Other Construction and Land Development loans in the Special Review category at December 31, 2021 compared to December 31, 2020 can be attributed to the upgrade of a relationship secured by real estate planned for lot development to Pass.  Also impacting the Special Review category was the payoff of a loan secured by commercial lots in the first quarter of 2021.  The decrease in Commercial Real Estate:  Farmland and Commercial Watch-List Doubtful loans at December 31, 2021 compared to December 31, 2020 can be attributed to a relationship secured by commercial property that was foreclosed upon in the first quarter of 2021.    

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Bank Premises and Equipment

12 Months Ended

Dec. 31, 2021

Bank Premises and Equipment

(5) Bank Premises and Equipment

A summary of bank premises and equipment, by asset classification, at December 31, 2021 and 2020 were as follows:

	Estimated
	useful lives				2021		2020
					(Dollars in Thousands)
Bank buildings and improvements	5	-	39	years	$	573,276	$	577,656
Furniture, equipment and vehicles	1	-	20	years		302,847		311,313
Land						113,118		117,848
Less: accumulated depreciation						(542,159)		(526,939)
Bank premises and equipment, net					$	447,082	$	479,878

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Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Other Intangible Assets

(6) Goodwill and Other Intangible Assets

The majority of our identified intangibles are in the form of amortizable core deposit premium.  A small portion of the fully amortized identified intangibles represent identified intangibles in the acquisition of the rights to the insurance agency contracts of InsCorp, Inc., acquired in 2008. Information on our identified intangible assets follows:

	Carrying		Accumulated
	Amount		Amortization		Net
	(Dollars in Thousands)
December 31, 2021:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—
December 31, 2020:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—

Amortization expense of intangible assets was $0, $0 and $0 for the years ended December 31, 2021, 2020 and 2019.

There were no changes in the carrying amount of goodwill for the years ended December 31, 2021 and 2020.

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Deposits

12 Months Ended

Dec. 31, 2021

Deposits

(7) Deposits

Deposits as of December 31, 2021 and 2020 and related interest expense for the years ended December 31, 2021, 2020 and 2019 were as follows:

	2021		2020
	(Dollars in Thousands)
Deposits:
Demand - non-interest bearing
Domestic	$	4,805,999	$	3,781,277
Foreign		1,032,527		934,537
Total demand non-interest bearing		5,838,526		4,715,814
Savings and interest bearing demand
Domestic		3,555,279		2,919,314
Foreign		1,035,269		933,191
Total savings and interest bearing demand		4,590,548		3,852,505
Time, certificates of deposit $100,000 or more
Domestic		794,757		797,692
Foreign		866,160		822,387
Less than $100,000
Domestic		286,499		291,473
Foreign		241,387		241,989
Total time, certificates of deposit		2,188,803		2,153,541
Total deposits	$	12,617,877	$	10,721,860

	2021		2020		2019
	(Dollars in Thousands)
Interest expense:
Savings and interest bearing demand
Domestic	$	3,268	$	5,098	$	13,462
Foreign		842		1,260		2,917
Total savings and interest bearing demand		4,110		6,358		16,379
Time, certificates of deposit $100,000 or more
Domestic		6,652		8,827		7,804
Foreign		3,452		7,536		9,407
Less than $100,000
Domestic		984		1,781		2,232
Foreign		567		1,086		1,527
Total time, certificates of deposit		11,655		19,230		20,970
Total interest expense on deposits	$	15,765	$	25,588	$	37,349

Scheduled maturities of time deposits as of December 31, 2021 were as follows:

	Total
	(in thousands)
2022	$	2,071,684
2023		86,480
2024		20,788
2025		9,608
2026		231
Thereafter		12
Total	$	2,188,803

Scheduled maturities of time deposits in amounts of $100,000 or more at December 31, 2021, were as follows:

	Total
	(in thousands)
Due within 3 months or less	$	677,946
Due after 3 months and within 6 months		407,731
Due after 6 months and within 12 months		506,392
Due after 12 months		68,848
	$	1,660,917

Time deposits that meet or exceed the FDIC insurance limit of $250,000 at December 31, 2021 and December 31, 2020 were $1,125,318 and $1,085,404, in thousands, respectively.

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Securities Sold Under Repurchase Agreements

12 Months Ended

Dec. 31, 2021

Securities Sold Under Repurchase Agreements

(8) Securities Sold Under Repurchase Agreements

Our Subsidiary Banks have entered into repurchase agreements with individual customers of the Subsidiary Banks. The purchasers have agreed to resell to the Subsidiary Banks identical securities upon the maturities of the agreements. Securities sold under repurchase agreements were mortgage-backed securities and averaged $411,611,000 and $335,392,000 during 2021 and 2020, respectively, and the maximum amount outstanding at any month end during 2021 and 2020 was $443,980,000 and $428,148,000 respectively.

Further information related to repurchase agreements at December 31, 2021 and 2020 is set forth in the following table:

	Collateral Securities				Repurchase Borrowing
	Book Value of		Fair Value of		Balance of		Weighted Average
	Securities Sold		Securities Sold		Liability		Interest Rate
	(Dollars in Thousands)
December 31, 2021 term:
Overnight agreements	$	500,495	$	492,026	$	428,235	0.16	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,452		11,229		11,437	0.48
Total	$	511,947	$	503,255	$	439,672	0.17	%
December 31, 2020 term:
Overnight agreements	$	506,020	$	507,164	$	416,757	0.13	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,684		11,641		11,391	0.43
Total	$	517,704	$	518,805	$	428,148	0.14	%

The book value and fair value of securities sold includes the entire book value and fair value of securities partially or fully pledged under repurchase agreements.

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Other Borrowed Funds

12 Months Ended

Dec. 31, 2021

Other Borrowed Funds

(9) Other Borrowed Funds

Other borrowed funds include Federal Home Loan Bank borrowings, which may be short and long-term fixed borrowings issued by the Federal Home Loan Bank of Dallas and the Federal Home Loan Bank of Topeka at the market price offered at the time of funding. These borrowings are secured by mortgage-backed investment securities and a portion of our loan portfolio.

Further information regarding our other borrowed funds at December 31, 2021 and 2020 is set forth in the following table:

	December 31,
	2021			2020
	(Dollars in Thousands)
Federal Home Loan Bank advances—short-term
Balance at year end	$	—		$	—
Rate on balance outstanding at year end		—	%		—	%
Average daily balance	$	—		$	110,776
Average rate		—	%		1.19	%
Maximum amount outstanding at any month end	$	—		$	292,000
Federal Home Loan Bank advances—long-term(1)
Balance at year end	$	436,138		$	436,327
Rate on balance outstanding at year end		1.73	%		1.73	%
Average daily balance	$	436,225		$	436,411
Average rate		1.71	%		1.71	%
Maximum amount outstanding at any month end	$	436,311		$	436,495

(1) Long-term advances at December 31, 2021 and December 31, 2020 consisted of both amortizing and non-amortizing advances.  The non-amortizing advances mature in the following increments:  $75,000,000 in July 2028, $100,000,000 in March 2033 and $250,000,000 in August 2033 and are callable by the FHLB on a quarterly basis.  Two amortizing advances are outstanding at December 31, 2021 in the amounts of $3,033,000 and $8,104,000 and mature in December 2033 and November 2033, respectively.  The amortization on the amortizing long-term advances totals approximately $194,000, $199,000, $204,000, $210,000 and $2215,000 for the years ending December 31, 2022, 2023, 2024, 2025 and December 31, 2026, respectively.      

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Junior Subordinated Deferrable Interest Debentures

12 Months Ended

Dec. 31, 2021

Junior Subordinated Interest Deferrable Debentures

(10) Junior Subordinated Deferrable Interest Debentures

We have formed five statutory business trusts under the laws of the State of Delaware for the purpose of issuing trust preferred securities. These statutory business trusts (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (the “Debentures”) we issued. As of December 31, 2021 and December 31, 2020, the principal amount of debentures outstanding totaled $134,642,000.

The Debentures are subordinated and junior in right of payment to all our present and future senior indebtedness (as defined in the respective indentures) and are pari passu with one another. The interest rate payable on, and the payment terms of the Debentures are the same as the distribution rate and payment terms of the respective issues of Capital and Common Securities issued by the Trusts. We have fully and unconditionally guaranteed the obligations of each of the Trusts with respect to the Capital and Common Securities. We have the right, unless an Event of Default (as defined in the Indentures) has occurred and is continuing, to defer payment of interest on the Debentures for up to twenty consecutive quarterly periods on Trusts VIII, IX, X, XI and XII. If interest payments on any of the Debentures are deferred, distributions on both the Capital and Common Securities related to that Debenture would also be deferred. The redemption prior to maturity of any of the Debentures may require the prior approval of the Federal Reserve and/or other regulatory bodies.

For financial reporting purposes, the Trusts are treated as investments and not consolidated in the consolidated financial statements. Although the Capital Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold would qualify as Tier 2 capital. At December 31, 2021 and December 31, 2020, the total $134,642,000 of the Capital Securities outstanding qualified as Tier 1 capital.

The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2021:

	Junior
	Subordinated
	Deferrable
	Interest		Repricing	Interest		Interest				Optional
	Debentures		Frequency	Rate		Rate Index(1)			Maturity Date	Redemption Date(1)
	(Dollars in Thousands)
Trust VIII	$	25,774	Quarterly	3.17	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	1.75	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	1.78	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	1.75	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	1.62	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

(1) The Capital Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

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Earnings per Share ("EPS")

12 Months Ended

Dec. 31, 2021

Earnings per Share ("EPS")

(11) Earnings per Share (“EPS”)

Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares

outstanding during the reporting period. The calculation of the basic EPS and the diluted EPS for the years ended December 31, 2021, 2020, and 2019 is set forth in the following table:

	Net Income		Shares	Per Share
	(Numerator)		(Denominator)	Amount
	(Dollars in Thousands,
	Except Per Share Amounts)
December 31, 2021:
Basic EPS
Net income available to common shareholders	$	253,922	63,352,737	$	4.01
Potential dilutive common shares and warrants		—	133,629
Diluted EPS	$	253,922	63,486,366	$	4.00
December 31, 2020:
Basic EPS
Net income available to common shareholders	$	167,319	63,725,819	$	2.63
Potential dilutive common shares and warrants		—	127,316
Diluted EPS	$	167,319	63,853,135	$	2.62
December 31, 2019:
Basic EPS
Net income available to common shareholders	$	205,104	65,476,606	$	3.13
Potential dilutive common shares		—	209,078
Diluted EPS	$	205,104	65,685,684	$	3.12

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Employees' Profit Sharing Plan

12 Months Ended

Dec. 31, 2021

Employees' Profit Sharing Plan

(12) Employees’ Profit Sharing Plan

We have a deferred profit sharing plan for full-time employees with a minimum of one year of continuous employment. Our annual contribution to the plan is based on a percentage, as determined by our Board of Directors, of income before income taxes, as defined, for the year. Allocation of the contribution among officers and employees’ accounts is based on length of service and amount of salary earned. Profit sharing costs of $3,550,000, $4,000,000 and $4,200,000 were charged to income for the years ended December 31, 2021, 2020, and 2019, respectively.

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International Operations

12 Months Ended

Dec. 31, 2021

International Operations

(13) International Operations

We provide international banking services for our customers through our Subsidiary Banks. Neither we nor our Subsidiary Banks have facilities located outside the United States. International operations are distinguished from domestic operations based upon the domicile of the customer.

Because the resources we employ are common to both international and domestic operations, it is not practical to determine net income generated exclusively from international activities.

A summary of assets attributable to international operations at December 31, 2021 and 2020 are as follows:

	2021		2020
	(Dollars in Thousands)
Loans:
Commercial	$	91,861	$	90,177
Others		42,936		48,793
		134,797		138,970
Less allowance for probable loan losses		(762)		(753)
Net loans	$	134,035	$	138,217
Accrued interest receivable	$	449	$	605

At December 31, 2021, we had $111,955,000 in outstanding standby and commercial letters of credit to facilitate trade activities.

Revenues directly attributable to international operations were approximately $4,090,000, $4,676,000 and $5,445,000 for the years ended December 31, 2021, 2020 and 2019, respectively.

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Income Taxes

12 Months Ended

Dec. 31, 2021

Income Taxes

(14) Income Taxes

We file a consolidated U.S. Federal and State income tax return. The current and deferred portions of net income tax expense included in the consolidated statements of income are presented below for the years ended December 31:

	2021		2020		2019
	(Dollars in Thousands)
Current
U.S.	$	59,591	$	43,794	$	48,559
State		5,272		3,709		2,944
Foreign		—		58		38
Total current taxes		64,863		47,561		51,541
Deferred
U.S.		3,794		(2,733)		2,979
State		(252)		(389)		330
Total deferred taxes		3,542		(3,122)		3,309
Total income taxes	$	68,405	$	44,439	$	54,850

Total income tax expense differs from the amount computed by applying the U.S. Federal income tax rate of 21%for 2021, 2020 and 2019 to income before income taxes. The reasons for the differences for the years ended December 31 are as follows:

	2021		2020		2019
	(Dollars in Thousands)
Computed expected tax expense	$	68,011	$	45,218	$	55,086
Change in taxes resulting from:
Tax-exempt interest income		(2,970)		(2,709)		(2,550)
State tax, net of federal income taxes, tax credit and refunds		3,966		2,622		2,587
Other investment income		(1,753)		(2,205)		(1,480)
Net investment in low income housing investments		203		1,990		623
Other		948		(477)		584
Actual tax expense	$	68,405	$	44,439	$	54,850

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2021 and 2020 are reflected below:

	2021		2020
	(Dollars in Thousands)
Deferred tax assets:
Loans receivable, principally due to the allowance for probable loan losses	$	22,773	$	21,921
Other real estate owned		1,227		1,183
Accrued expenses		81		81
Net unrealized losses on available for sale investment securities		9,062		—
Other		4,842		5,649
Total deferred tax assets		37,985		28,834
Deferred tax liabilities:
Bank premises and equipment, principally due to differences on depreciation		(12,163)		(12,350)
Net unrealized gains on available for sale investment securities		—		(5,679)
Impairment charges on available-for-sale securities		(19)		(19)
Identified intangible assets and goodwill		(13,966)		(13,807)
Other		(24,235)		(20,551)
Total deferred tax liabilities		(50,383)		(52,406)
Net deferred tax liability	$	(12,398)	$	(23,572)

The net deferred tax liability of $12,398,000 at December 31, 2021 and $23,572,000 at December 31, 2020 is included in other liabilities in the consolidated statements of condition.

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Stock Options

12 Months Ended

Dec. 31, 2021

Stock Options

(15) Stock Options

On April 5, 2012, the Board of Directors adopted the 2012 International Bancshares Corporation Stock Option Plan (the “2012 Plan”). There are 800,000 shares available for stock option grants under the 2012 Plan. Under the 2012 Plan, both qualified incentive stock options (“ISOs”) and non-qualified stock options (“NQSOs”) may be granted. Options granted may be exercisable for a period of up to 10 years from the date of grant, excluding ISOs granted to 10% shareholders, which may be exercisable for a period of up to only five years. As of December 31, 2021, 30,678 shares were available for future grants under the 2012 Plan.

The fair value of each option award granted under the plan is estimated on the date of grant using a Black-Scholes-Merton option valuation model that uses the assumptions noted in the following table. Expected volatility is based on the historical volatility of the price of our stock. We use historical data to estimate the expected dividend yield and employee termination rates within the valuation model. The expected term of options is derived from historical exercise behavior. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.

	2021		2020
Expected Life (Years)	7.00		7.00
Dividend yield	3.18	%	6.04	%
Interest rate	1.02	%	0.74	%
Volatility	37.84	%	29.04	%

A summary of option activity under the stock option plans for the twelve months ended December 31, 2021 is as follows:

				Weighted
		Weighted		average
		average		remaining	Aggregate
	Number of	exercise		contractual	intrinsic
	options	price		term (years)	value ($)
					(in Thousands)
Options outstanding at December 31, 2020	651,127	$	27.24
Plus: Options granted	18,000		37.76
Less:
Options exercised	110,000		21.94
Options expired	—		—
Options forfeited	38,576		33.19
Options outstanding at December 31, 2021	520,551		28.28	4.49	$	7,344
Options fully vested and exercisable at December 31, 2021	290,914	$	23.29	2.71	$	5,557

Stock-based compensation expense included in the consolidated statements of income for the years ended December 31, 2021, 2020 and 2019 was approximately $506,000, $743,000 and $980,000, respectively. As of December 31, 2021, there was approximately $907,000 of total unrecognized stock-based compensation cost related to non-vested options granted under our plans that will be recognized over a weighted average period of 1.6 years.

Other information pertaining to option activity during the twelve months ended December 31, 2021, 2020 and 2019 is as follows:

	Twelve Months Ended December 31,
	2021		2020		2019
Weighted average grant date fair value of stock options granted	$	10.20	$	2.46	$	7.38
Total fair value of stock options vested	$	1,308,000	$	1,218,000	$	1,333,000
Total intrinsic value of stock options exercised	$	2,536,000	$	356,000	$	2,373,000

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Commitments and Contingent Liabilities and Other Matters

12 Months Ended

Dec. 31, 2021

Commitments, Contingent Liabilities and Other Matters

(16) Commitments, Contingent Liabilities and Other Matters

On March 15, 2020, the FRB announced that it had reduced regulatory reserve requirements to zero percent effective on March 26, 2020; therefore no cash is required to be maintained to satisfy regulatory reserve requirements.

We are involved in various legal proceedings that are in various stages of litigation. We have determined, based on discussions with our counsel that any material loss in such actions, individually or in the aggregate, is remote or the damages sought, even if fully recovered, would not be considered material to our consolidated statements of condition and related statements of income, comprehensive income, shareholders’ equity and cash flows. However, many of these matters are in various stages of proceedings and further developments could cause management to revise its assessment of these matters.

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Transactions with Related Parties

12 Months Ended

Dec. 31, 2021

Transactions with Related Parties

(17) Transactions with Related Parties

In the ordinary course of business, the Subsidiary Banks make loans to our directors and executive officers, including their affiliates, families and companies in which they are principal owners. In the opinion of management, these loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons and do not involve more than normal risk of collectability or present other unfavorable features. The aggregate amounts receivable from such related parties amounted to approximately $18,881,000 and $30,398,000 at December 31, 2021 and 2020, respectively.

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Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk

12 Months Ended

Dec. 31, 2021

Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk

(18) Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk

In the normal course of business, the Subsidiary Banks are party to financial instruments with off-statement of condition risk to meet the financing needs of their customers. These financial instruments include commitments to their customers. These financial instruments involve, to varying degrees, elements of credit risk in excess of the amounts recognized in the consolidated statement of condition. The contract amounts of these instruments reflect the extent of involvement the Subsidiary Banks have in particular classes of financial instruments. At December 31, 2021, the following financial amounts of instruments, whose contract amounts represent credit risks, were outstanding:

Commitments to extend credit	$	2,679,462,000
Credit card lines		13,702,000
Standby letters of credit		111,955,000
Commercial letters of credit		594,000

We enter into a standby letter of credit to guarantee performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved is represented by the contractual amounts of those instruments. Under the standby letters of credit, we are required to make payments to the beneficiary of the letters of credit upon request by the beneficiary so long as all performance criteria have been met. At December 31, 2021, the maximum potential amount of future payments is approximately $111,955,000. At December 31, 2021, the fair value of these guarantees is not significant. Unsecured letters of credit totaled approximately $29,254,000 and $39,487,000 at December 31, 2021 and 2020, respectively.

We enter into commercial letters of credit on behalf of our customers which authorize a third party to draw drafts upon us up to a stipulated amount and with specific terms and conditions. A commercial letter of credit is a conditional commitment on our part to provide payment on drafts drawn in accordance with the terms of the commercial letter of credit.

The Subsidiary Banks’ exposure to credit loss in the event of nonperformance by the other party to the above financial instruments is represented by the contractual amounts of the instruments. The Subsidiary Banks use the same credit policies in making commitments and conditional obligations as they do for on-statement of condition instruments. The Subsidiary Banks control the credit risk of these transactions through credit approvals, limits and monitoring procedures. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any

condition established in the contract. Commitments generally have fixed expiration dates normally less than one year or other termination clauses and may require the payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Subsidiary Banks evaluate each customer’s credit-worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Subsidiary Banks upon extension of credit, is based on management’s credit evaluation of the customer. Collateral held varies, but may include residential and commercial real estate, bank certificates of deposit, accounts receivable and inventory.

The Subsidiary Banks make commercial, real estate and consumer loans to customers principally located in South, Central and Southeast Texas and the State of Oklahoma. Although the loan portfolio is diversified, a substantial portion of its debtors’ ability to honor their contracts is dependent upon the economic conditions in these areas, especially in the real estate and commercial business sectors.

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Capital Requirements

12 Months Ended

Dec. 31, 2021

Capital Requirements

(19) Capital Requirements

Bank regulatory agencies limit the amount of dividends, which the Subsidiary Banks can pay, without obtaining prior approval from such agencies. At December 31, 2021, the Subsidiary Banks could pay dividends of up to $1,066,000,000 without prior regulatory approval and without adversely affecting their “well-capitalized” status under regulatory capital rules in effect at December 31, 2021. In addition to legal requirements, regulatory authorities also consider the adequacy of the Subsidiary Banks’ total capital in relation to their deposits and other factors. These capital adequacy considerations also limit amounts available for payment of dividends. We historically have not allowed any Subsidiary Bank to pay dividends in such a manner as to impair its capital adequacy.

We and the Subsidiary Banks are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on our consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, we must meet specific capital guidelines that involve quantitative measures of our assets, liabilities, and certain off-statement of condition items as calculated under regulatory accounting practices. Our capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.

Current quantitative measures established by regulation to ensure capital adequacy require us to maintain minimum amounts and ratios (set forth in the table on the following page) of Total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets. Management believes, as of December 31, 2021, that we met all capital adequacy requirements to which we are subject.

       In July 2013, the FDIC and other regulatory bodies established a new, comprehensive capital framework for U.S. banking organizations, consisting of minimum requirements that increase both the quantity and quality of capital held by banking organizations. The final rules are a result of the implementation of the BASEL III capital reforms and various Dodd-Frank related capital provisions. Consistent with the Basel international framework, the rules include a new minimum ratio of Common Equity Tier 1 (“CET1”) to risk-weighted assets of 4.5% and a CET1 capital conservation buffer of 2.5% of risk-weighted assets.  The capital conservation buffer began phasing-in on January 1, 2016 at .625% and increased each year until January 1, 2019, when we were required to have a 2.5% capital conservation buffer, effectively resulting in a minimum ratio of CET1 capital to risk-weighted assets of at least 7% upon full implementation. The rules also raised the minimum ratio of Tier 1 capital to risk-weighted assets from 4% to 6% and include a minimum leverage ratio of 4% for all banking organizations. Regarding the quality of capital, the rules emphasize CET1 capital and implements strict eligibility criteria for regulatory capital instruments. The rules also improve the methodology for calculating risk-weighted assets to enhance risk sensitivity. The rules were subject to a four-year phase-in period for mandatory compliance and we were required to begin to phase-in the new rules beginning on January 1, 2015.  We believe that as of December 31, 2021, we meet all fully phased-in capital adequacy requirements.

On November 21, 2017, the OCC, the Federal Reserve and the FDIC finalized a proposed rule that extends the current treatment under the regulatory capital rules for certain regulatory capital deductions and risk weights and certain minority interest requirements, as they apply to banking organizations that are not subject to the advanced approaches

capital rules.  Effective January 1, 2018, the rule also paused the full transition to the Basel III treatment of mortgage servicing assets, certain deferred tax assets, investments in the capital of unconsolidated financial institutions and minority interests.  The agencies are also considering whether to make adjustments to the capital rules in response to CECL (the FASB Standard relating to current expected credit loss) and its potential impact on regulatory capital.

On December 7, 2017, the Basel Committee on Banking Supervision unveiled the latest round of its regulatory capital framework, commonly called “Basel IV.”  The framework makes changes to the capital framework first introduced as “Basel III” in 2010.  The committee targeted 2022-2027 as the timeframe for implementation by regulators in individual countries, including the U.S. federal bank regulatory agencies (after notice and comment).

The aforementioned capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of CET1 capital to risk-weighted assets above the minimum but below the conservation buffer will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall.

As of December 31, 2021, our capital levels continue to exceed all capital adequacy requirements under the Basel III Capital Rules as currently applicable to us.    

On May 24, 2018, the EGRRCPA was enacted and, among other things, it includes a simplified capital rule change which effectively exempts banks with assets of less than $10 billion that exceed the “community bank leverage ratio,” from all risk-based capital requirements, including Basel III and its predecessors. The federal banking agencies must establish the “community bank leverage ratio” (a ratio of tangible equity to average consolidated assets) between 8% and 10% before community banks can begin to take advantage of this regulatory relief provision. Some of the Subsidiary Banks, with assets of less than $10 billion, may qualify for this exemption. Additionally, under the EGRRCPA, qualified bank holding companies with assets of up to $3 billion (currently $1 billion) will be eligible for the Federal Reserve’s Small Bank Holding Company Policy Statement, which eases limitations on the issuance of debt by holding companies. On August 28, 2018, the Federal Reserve issued an interim final rule expanding the applicability of its Small Bank Holding Company Policy Statement. While holding companies that meet the conditions of the policy statement are excluded from consolidated capital requirements, their depository institutions continue to be subject to minimum capital requirements. Finally, for banks that continue to be subject to the risk-based capital rules of Basel III (e.g., 150%), certain commercial real estate loans that were formally classified as high volatility commercial real estate 31 (“HVCRE”) will not be subject to heightened risk weights if they meet certain criteria. Also, while acquisition, development, and construction (“ADC”) loans will generally be subject to heightened risk weights, certain exceptions will apply. On September 18, 2018, the federal banking agencies issued a proposed rule modifying the agencies’ capital rules for HVCRE.

As of December 31, 2021, the most recent notification from the FDIC categorized all the Subsidiary Banks as well-capitalized under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized,” we must maintain minimum Total risk-based, Tier 1 risk based, and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed our categorization as well-capitalized.

In December 2018, the federal bank regulators issued a final rule that would provide an optional three-year phase-in period for the day-one regulatory capital effects of the adoption of ASU 2016-13 to ASC 326 “Financial Instruments – Credit Losses,” as amended, on January 1, 2020. We did not elect to use the optional three-year phase-in period when we adopted ASU 2016-13 to ASC 326 “Financial Instruments – Credit Losses,” as amended, on January 1, 2020.

Our actual capital amounts and ratios for 2021 under current guidelines are presented in the following table:

					For Capital Adequacy				To Be Well-Capitalized
					Purposes				Under Prompt Corrective
	Actual				Phase In Schedule				Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2021:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	2,057,928	20.47	%	$	703,710	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			456,544	7.000		$	423,934	6.50	%
International Bank of Commerce, Brownsville		315,957	19.80			111,690	7.000			103,712	6.50
International Bank of Commerce, Oklahoma		221,567	18.59			83,452	7.000			77,491	6.50
Commerce Bank		102,375	46.06			15,559	7.000			14,448	6.50
International Bank of Commerce, Zapata		75,303	42.25			12,475	7.000			11,584	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,284,579	22.73	%	$	1,055,565	10.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,367,487	20.97			684,816	10.500		$	652,206	10.00	%
International Bank of Commerce, Brownsville		334,495	20.96			167,535	10.500			159,557	10.00
International Bank of Commerce, Oklahoma		232,454	19.50			125,178	10.500			119,217	10.00
Commerce Bank		104,996	47.24			23,339	10.500			22,227	10.00
International Bank of Commerce, Zapata		77,354	43.40			18,713	10.500			17,822	10.00
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	2,170,682	21.59	%	$	854,505	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			554,375	8.500		$	521,764	8.00	%
International Bank of Commerce, Brownsville		315,957	19.80			135,623	8.500			127,645	8.00
International Bank of Commerce, Oklahoma		221,567	18.59			101,334	8.500			95,374	8.00
Commerce Bank		102,375	46.06			18,893	8.500			17,782	8.00
International Bank of Commerce, Zapata		75,303	42.25			15,149	8.500			14,258	8.00
Tier 1 Capital (to Average Assets):
Consolidated	$	2,170,682	13.94	%	$	622,671	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,287,687	11.14			462,225	4.00			577,781	5.00	%
International Bank of Commerce, Brownsville		315,957	20.17			62,663	4.00			78,329	5.00
International Bank of Commerce, Oklahoma		221,567	11.49			77,164	4.00			96,455	5.00
Commerce Bank		102,375	16.10			25,441	4.00			31,801	5.00
International Bank of Commerce, Zapata		75,303	16.15			18,651	4.00			23,314	5.00

Our actual capital amounts and ratios for 2020 are also presented in the following table:

										To Be Well-Capitalized
					For Capital Adequacy					Under Prompt Corrective
	Actual				Purposes					Action Provisions
	Amount		Ratio		Amount		Ratio			Amount	Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2020:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	1,874,641	19.05	%	$	688,678	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			498,492	7.000		$	462,885	6.50	%
International Bank of Commerce, Oklahoma		207,339	17.45			83,150	7.000			77,211	6.50
International Bank of Commerce, Brownsville		189,575	22.18			59,843	7.000			55,569	6.50
International Bank of Commerce, Zapata		71,369	34.51			14,476	7.000			13,442	6.50
Commerce Bank		93,426	35.64			18,347	7.000			17,037	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,105,360	21.40	%	$	1,033,017	10.500	%		N/A	N/A	%
International Bank of Commerce, Laredo		1,380,685	19.39			747,737	10.500		$	712,131	10.00
International Bank of Commerce, Oklahoma		218,657	18.41			124,725	10.500			118,786	10.00
International Bank of Commerce, Brownsville		200,269	23.43			89,765	10.500			85,490	10.00
International Bank of Commerce, Zapata		73,510	35.55			21,714	10.500			20,680	10.00
Commerce Bank		96,240	36.72			27,521	10.500			26,210	10.00
Tier 1 Capital (to Risk Weighted Assets):												%
Consolidated	$	1,992,403	20.25	%	$	836,252	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			605,311	8.500		$	569,705	8.00
International Bank of Commerce, Oklahoma		207,339	17.45			100,968	8.500			95,029	8.00
International Bank of Commerce, Brownsville		189,575	22.18			72,667	8.500			68,392	8.00
International Bank of Commerce, Zapata		71,369	34.51			17,578	8.500			16,544	8.00
Commerce Bank		93,426	35.64			22,279	8.500			20,968	8.00	%
Tier 1 Capital (to Average Assets):
Consolidated	$	1,992,403	14.92	%	$	534,228	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,295,437	13.11			395,289	4.00			494,112	5.00
International Bank of Commerce, Oklahoma		207,339	12.98			63,879	4.00			79,848	5.00
International Bank of Commerce, Brownsville		189,575	14.55			52,101	4.00			65,127	5.00
International Bank of Commerce, Zapata		71,369	16.52			17,277	4.00			21,596	5.00
Commerce Bank		93,426	16.69			22,394	4.00			27,993	5.00

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Fair Value

12 Months Ended

Dec. 31, 2021

Fair Value

(20) Fair Value

ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. ASC 820 applies to all financial instruments that are being measured and reported on a fair value basis. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date; it also establishes a fair value hierarchy that prioritizes the inputs used in valuation methodologies into the following three levels:

● Level 1 Inputs—Unadjusted quoted prices in active markets for identical assets or liabilities.

● Level 2 Inputs—Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

● Level 3 Inputs—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or other valuation techniques,

as well as instruments for which the determination of fair value requires significant management judgment or estimation.

A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy is set forth below.

The following table represents financial instruments reported on the consolidated statements of condition at their fair value as of December 31, 2021 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2021		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	4,169,363	$	—	$	4,169,363	$	—
States and political subdivisions		44,557		—		44,557		—
Equity Securities		6,079		6,079		—		—
	$	4,219,999	$	6,079	$	4,213,920	$	—

The following table represents financial instruments reported on the consolidated balance sheets at their fair value as of December 31, 2020 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,029,954	$	—	$	3,029,954	$	—
States and political subdivisions		50,814		—		50,814		—
Equity Securities		6,202		6,202		—		—
	$	3,086,970	$	6,202	$	3,080,768	$	—

For the years ended December 31, 2021 and December 31, 2020, debt investment securities available-for-sale are classified within Level 2 of the valuation hierarchy.  Equity securities with readily determinable fair values are classified within Level 1. For debt securities classified as Level 2 in the fair value hierarchy, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things.

Certain financial instruments are measured at fair value on a nonrecurring basis. They are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2021 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	December 31,		Assets		Inputs		Inputs		During
	2021		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	55	$	—	$	—	$	55	$	209
Other real estate owned	$	18,095	$	—	$	—	$	18,095	$	2,655

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the year ended December 31, 2020 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets		Other		Significant		Net (Credit)
	Year ended		for Identical		Observable		Unobservable		Provision
	December 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	393	$	—	$	—	$	393	$	(86)
Other real estate owned		6,241		—		—		6,241		1,539

Our assets measured at fair value on a non-recurring basis are limited to loans classified as Watch List – Doubtful and other real estate owned.  The fair value of Watch-List Doubtful loans is derived in accordance with FASB ASC 310, “Receivables”.  They are primarily comprised of collateral-dependent commercial loans.   As the primary sources of loan repayments decline, the secondary repayment source, the collateral, takes on greater significance.  Correctly evaluating the fair value becomes even more important.  Re-measurement of the loan to fair value is done through a specific valuation allowance included in the ACL.  The fair value of the loan is based on the fair value of the collateral, as determined through either an appraisal or evaluation process.  The basis for our appraisal and appraisal review process is based on regulatory guidelines and strives to comply with all regulatory appraisal laws, regulations, and the Uniform Standards of Professional Appraisal Practice. All appraisals and evaluations are “as is” (the property’s highest and best use) valuations based on the current conditions of the property/project at that point in time.  The determination of the fair value of the collateral is based on the net realizable value, which is the appraised value less any closing costs, when applicable.  As of December 31, 2021, we had approximately $993,000 of doubtful commercial collateral dependent loans, of which approximately $0 had an appraisal performed within the immediately preceding twelve months and of which approximately $896,000 had an evaluation performed within the immediately preceding twelve months. As of December 31, 2020, we had approximately $18,361,000 of doubtful commercial collateral dependent loans, of which approximately $16,587,000 had an appraisal

performed within the immediately preceding twelve months and of which approximately $1,283,000 had an evaluation performed within the immediately preceding twelve months.

The determination to either seek an appraisal or to perform an evaluation begins in weekly credit quality meetings, where the committee analyzes the existing collateral values of the doubtful loans and where obsolete appraisals are identified.  In order to determine whether we would obtain a new appraisal or perform an internal evaluation to determine the fair value of the collateral, the credit committee reviews the existing appraisal to determine if the collateral value is reasonable in view of the current use of the collateral and the economic environment related to the collateral.  If the analysis of the existing appraisal does not find that the collateral value is reasonable under the current circumstances, we would obtain a new appraisal on the collateral or perform an internal evaluation of the collateral.  The ultimate decision to get a new appraisal rests with the independent credit administration group.  A new appraisal is not required if an internal evaluation, as performed by in-house experts, is able to appropriately update the original appraisal assumptions to reflect current market conditions and provide an estimate of the collateral’s market value for impairment analysis.  The internal evaluations must be in writing and contain sufficient information detailing the analysis, assumptions and conclusions and they must support performing an evaluation in lieu of ordering a new appraisal.

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate owned is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal) within Level 3 of the fair value hierarchy. Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL (formerly allowance for probable loan losses), if necessary. The fair value is reviewed periodically and subsequent write downs are made accordingly through a charge to operations. Other real estate owned is included in other assets on the consolidated financial statements. For the twelve months ended December 31, 2021, 2020 and 2019, we recorded approximately $2,000, $22,000 and $9,611,000, respectively, in charges to the ACL in connection with loans transferred to other real estate owned. For the twelve months ended December 31, 2021, 2020 and 2019, we recorded approximately $2,655,000, $1,539,000 and $322,000, respectively, in adjustments to fair value in connection with other real estate owned.

The fair value estimates, methods, and assumptions for our financial instruments at December 31, 2021 and December 31, 2020 are outlined below.

Cash and Cash Equivalents

For these short-term instruments, the carrying amount is a reasonable estimate of fair value.

Investment securities held-to-maturity

The carrying amounts of investments held-to-maturity approximate fair value.

Investment Securities

For debt investment securities, which may include U.S. Treasury securities, obligations of other U.S. government agencies, obligations of states and political subdivisions and mortgage pass through and related securities, fair values are from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. See disclosures of fair value of investment securities in Note 2.

Loans

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, real estate and consumer loans as outlined by regulatory reporting guidelines. Each category is segmented into fixed and variable interest rate terms and by performing and non-performing categories.

For variable rate performing loans, the carrying amount approximates the fair value. For fixed rate performing loans, except residential mortgage loans, the fair value is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk inherent in the loan. For performing residential mortgage loans, fair value is estimated by discounting contractual cash flows adjusted for prepayment estimates using discount rates based on secondary market sources or the primary origination market. Fixed rate performing loans are within Level 3 of the fair value hierarchy. At December 31, 2021 and December 31, 2020, the carrying amount of fixed rate performing loans was $1,363,313,000 and $1,812,413,000, respectively, and the estimated fair value was $1,323,223,000 and $1,747,257,000, respectively.

Accrued Interest

The carrying amounts of accrued interest approximate fair value.

Deposits

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposit accounts, savings accounts and interest-bearing demand deposit accounts, was equal to the amount payable on demand as of December 31, 2021 and December 31, 2020. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is based on currently offered rates. Time deposits are within Level 3 of the fair value hierarchy. At December 31, 2021 and December 31, 2020, the carrying amount of time deposits was $2,188,803,000 and $2,153,541,000, respectively, and the estimated fair value was $2,186,547,000 and $2,148,976,000, respectively.

Securities Sold Under Repurchase Agreements

Securities sold under repurchase agreements are short-term maturities. Due to the contractual terms of the instruments, the carrying amounts approximated fair value at December 31, 2021 and December 31, 2020.  

Junior Subordinated Deferrable Interest Debentures

We currently have floating rate junior subordinated deferrable interest debentures outstanding. Due to the contractual terms of the floating rate junior subordinated deferrable interest debentures, the carrying amounts approximated fair value at December 31, 2021 and December 31, 2020.

Other Borrowed Funds

We currently have long-term borrowings issued from the Federal Home Loan Bank (“FHLB”).  The long-term borrowings outstanding at December 31, 2021 and December 31, 2020 are fixed-rate borrowings and the fair value is based on established market spreads for similar types of borrowings.  The fixed-rate long-term borrowings are included in Level 2 of the fair value hierarchy.  At December 31, 2021 and December 31, 2020 the carrying amount of the fixed-rate long-term FHLB borrowings was $436,138,000 and $436,372,000, respectively, and the estimated fair value was $455,187,000 and $480,475,000 respectively.  

Commitments to Extend Credit and Letters of Credit

Commitments to extend credit and fund letters of credit are principally at current interest rates and therefore the carrying amount approximates fair value.

Limitations

Fair value estimates are made at a point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time of our entire holdings of a particular financial instrument. Because no market exists for a significant portion of our financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current

economic conditions, risk characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Fair value estimates are based on existing on-and off-statement of condition financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial assets or liabilities include the bank premises and equipment and core deposit value. In addition, the tax ramifications related to the effect of fair value estimates have not been considered in the above estimates.

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Condition

12 Months Ended

Dec. 31, 2021

International Bancshares Corporation (Parent Company Only) Financial Information Statements of Condition

(21) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Condition

(Parent Company Only)

December 31, 2021 and 2020

(Dollars in Thousands)

	2021		2020
ASSETS
Cash	$	62,564	$	66,252
Other investments		90,555		77,661
Net loans		10,401		11,950
Investment in subsidiaries		2,281,597		2,167,516
Goodwill		3,365		3,365
Other assets		1,644		—
Total assets	$	2,450,126	$	2,326,744
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Junior subordinated deferrable interest debentures	$	134,642	$	134,642
Due to IBC Trading		21		21
Other liabilities		6,982		14,083
Total liabilities		141,645		148,746
Shareholders’ equity:
Common shares		96,351		96,241
Surplus		152,144		149,334
Retained earnings		2,470,710		2,289,626
Accumulated other comprehensive (loss) income		(31,980)		20,825
		2,687,225		2,556,026
Less cost of shares in treasury		(378,744)		(378,028)
Total shareholders’ equity		2,308,481		2,177,998
Total liabilities and shareholders’ equity	$	2,450,126	$	2,326,744

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Income

12 Months Ended

Dec. 31, 2021

International Bancshares Corporation (Parent Company Only) Financial Information Statements of Income

(22) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Income

(Parent Company Only)

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Income:
Dividends from subsidiaries	$	80,882	$	130,950	$	127,750
Interest income on notes receivable		1,139		357		922
Interest income (loss) on other investments		9,662		(1,126)		(514)
Other		58		5		18
Total income		91,741		130,186		128,176
Expenses:
Interest expense (Debentures)		2,792		3,832		6,435
Provision for credit loss		—		27		—
Other		2,272		1,988		2,749
Total expenses		5,064		5,847		9,184
Income before federal income taxes and equity in undistributed net income of subsidiaries		86,677		124,339		118,992
Income tax expense (benefit)		1,358		(1,339)		(1,878)
Income before equity in undistributed net income of subsidiaries		85,319		125,678		120,870
Equity in undistributed net income of subsidiaries		168,603		41,641		84,234
Net income	$	253,922	$	167,319	$	205,104

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Cash Flows

12 Months Ended

Dec. 31, 2021

International Bancshares Corporation (Parent Company Only) Financial Information Statements of Cash Flows

(23) International Bancshares Corporation (Parent Company Only) Financial Information

Statements of Cash Flows

(Parent Company Only)

Years ended December 31, 2021, 2020 and 2019

(Dollars in Thousands)

	2021		2020		2019
Operating activities:
Net income	$	253,922	$	167,319	$	205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss		—		27		—
Unrealized (gain) loss on equity securities with readily determinable fair values		(51)		22		(16)
Stock compensation expense		506		743		980
(Decrease) increase in other liabilities		(8,084)		2,467		(58)
Equity in undistributed net income of subsidiaries		(168,603)		(41,641)		(84,234)
Net cash provided by operating activities		77,690		128,937		121,776
Investing activities:
Net decrease (increase) in notes receivable		1,549		—		(12,100)
(Decrease) increase in other assets and other investments		(11,787)		31,289		5,915
Net cash (used in) provided by investing activities		(10,238)		31,289		(6,185)
Financing activities:
Redemption of long-term debt		—		—		(25,774)
Proceeds from stock transactions		2,414		542		1,923
Payments of cash dividends - common		(72,838)		(69,928)		(68,670)
Purchase of treasury stock		(716)		(48,878)		(17,845)
Net cash used in financing activities		(71,140)		(118,264)		(110,366)
(Decrease) increase in cash		(3,688)		41,962		5,225
Cash at beginning of year		66,252		24,290		19,065
Cash at end of year	$	62,564	$	66,252	$	24,290

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2021

Consolidation and Basis of Presentation

Consolidation and Basis of Presentation

Our consolidated financial statements include the accounts of the International Bancshares Corporation, its wholly-owned Subsidiary Banks and its wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, IBC Capital Corporation and Diamond Beach Holdings, LLC.  All significant inter-company balances and transactions have been eliminated in consolidation.

We, through our Subsidiary Banks, are primarily engaged in the business of banking, including the acceptance of checking and savings deposits and the making of commercial, real estate, personal, home improvement, automobile and other installment and term loans. Our primary markets are north, south, central, and southeast Texas and the state of Oklahoma. Each of our Subsidiary Banks is very active in facilitating international trade along the United States border with Mexico and elsewhere. Although our loan portfolio is diversified, the ability of our debtors to honor their contracts is primarily dependent upon the economic conditions in our trade area. In addition, the investment portfolio is directly impacted by fluctuations in market interest rates. We are subject to the regulations of certain federal agencies as well as the Texas Department of Banking and the Oklahoma Department of Banking and undergo periodic examinations by those regulatory authorities. Such agencies may require certain standards or impose certain limitations based on their judgments or changes in law and regulations.

We own one insurance-related subsidiary, IBC Insurance Agency, Inc., a wholly owned subsidiary of our Subsidiary Bank, International Bank of Commerce, Laredo. The insurance-related subsidiary does not conduct underwriting activities.

The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the statement of condition and income and expenses for the periods. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the allowance for credit losses (“ACL”).

Subsequent Events

Subsequent Events

We have evaluated all events or transactions that occurred through the date we issued these financial statements. During this period, we did not have any material recognizable or non-recognizable subsequent events.

Investment Securities

Investment Securities

We classify debt securities into one of these categories: held-to-maturity, available-for-sale, or trading. Such classifications are reassessed for appropriate classification at each reporting date. Securities that are intended and expected to be held until maturity are classified as “held-to-maturity” and are carried at amortized cost for financial statement reporting. Securities that are not positively expected to be held until maturity, but are intended to be held for an indefinite period of time are classified as “available-for-sale” or “trading” and are carried at their fair value. Unrealized holding gains and losses are included in net income for those securities classified as “trading”, while unrealized holding gains and losses related to those securities classified as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income (loss) and in shareholders’ equity as accumulated other comprehensive income (loss) until realized. Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income.  In accordance with ASU 2016-13, which we adopted on January 1, 2020, available-for-sale and held-to-maturity debt securities in an unrealized loss position must be evaluated for the underlying cause of the loss.  In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment would be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through

our ACL.  The exception to this process will occur if we intend to sell an impaired available-for-sale debt security or if we will more likely than not be required to sell a credit impaired available-for-sale debt security prior to the value recovering to the security’s amortized cost.  In those situations, the entire credit-related impairment amount would be required to be recognized in earnings.  We have evaluated the debt securities classified as available-for-sale and held-to-maturity at December 31, 2021 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the periods.  We did not maintain any trading securities during the three-year period ended December 31, 2021.

Mortgage-backed securities held at December 31, 2021 and 2020 represent participating interests in pools of long-term first mortgage loans originated and serviced by the issuers of the securities. Mortgage-backed securities are either issued or guaranteed by the U.S. government or its agencies including Freddie Mac, Fannie Mae, Ginnie Mae or other non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U. S. government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. government; however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities. Market interest rate fluctuations can affect the prepayment speed of principal and the yield on the security.

Premiums and discounts are amortized using the level yield or “interest method” over the terms of the securities. Declines in the fair value of held-to-maturity and available-for sale-securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In determining whether other-than-temporary impairment exists, management considers many factors, including (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) our intent to hold and our determination of whether we will more likely than not be required to sell the security prior to a recovery in fair value. If we determine that (i) we intend to sell the security or (ii) it is more likely than not that we will be required to sell the security before it’s anticipated recovery, the other-than-temporary impairment that is recognized in earnings is equal to the difference between the fair value of the security and our amortized cost of the security. If we determine that we (i) do not intend to sell the security and (ii) we will not be more likely than not required to sell the security before it’s anticipated recovery, the other-than-temporary impairment is segregated into its two components (i) the amount of impairment related to credit loss and (ii) the amount of impairment related to other factors. The difference between the present value of the cash flows expected to be collected and the amortized cost is the credit loss recognized through earnings and an adjustment to the cost basis of the security. The amount of impairment related to other factors is included in other comprehensive income (loss). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.

Equity Securities

Equity Securities

Equity securities with readily determinable fair values at December 31, 2021 and December 31, 2020 consist primarily of Community Reinvestment Act funds.  Unrealized gains and losses on the equity securities are recognized in net income.

Provision and Allowance for Credit Losses

Provision and Allowance for Credit Losses

We adopted the provisions of Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” on January 1, 2020.  ASU 2016-13 replaces the long-standing incurred loss model with an expected credit loss model that recognizes credit losses over the life of a financial asset.  Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions.  The ACL is deducted from the amortized cost of an instrument to present the net amount expected to be collected on the financial asset.  Our ACL primarily consists of the aggregate ACL estimates of our Subsidiary Banks. The estimates are established through charges to operations in the form of charges to provisions for credit loss expense.  Loan losses or recoveries are charged or credited directly to the ACL. The ACL of each Subsidiary Bank is maintained at a level considered appropriate by management, based on estimated current expected credit losses in the current loan portfolio, including information about past events, current conditions and reasonable and supportable forecasts.  

Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts.  Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control, including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications.  We believe that the allowance for probable loan losses is adequate.

The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial, financial and agricultural or real estate loans are generally considered by management to represent a loss, in whole or part, (i) when an exposure beyond any collateral coverage is apparent, (ii) when no further collection of the portion of the loan so exposed is anticipated based on actual results, (iii) when the credit enhancements, if any, are not adequate, and (iv) when the borrower’s financial condition would indicate so. Generally, unsecured consumer loans are charged-off when 90 days past due.

Loans

Loans

Loans are reported at the principal balance outstanding, net of unearned discounts. Interest income on loans is reported on an accrual basis. Loan fees and costs associated with originating the loans are accreted or amortized over the life of the loan using the interest method. We originate mortgage loans that may subsequently be sold to an unaffiliated third party. The loans are not securitized and if sold, are sold without recourse. Loans held for sale are carried at cost and the principal amount outstanding is not significant to the consolidated financial statements.

Doubtful Loans

Doubtful Loans

Doubtful loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. Doubtful loans are measured based on (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price; or (3) the fair value of the collateral if the loan is collateral dependent. Substantially all our doubtful loans are measured at the fair value of the collateral. In limited cases, we may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

Troubled Debt Restructured Loans

Troubled Debt Restructured Loans

Troubled debt restructured loans (“TDR”) are those loans where, for reasons related to a borrower’s difficulty to repay a loan, we grant a concession to the borrower that we would not normally consider in the normal course of business. In accordance with interagency guidance issued in March 2020, certain short-term deferrals are not considered troubled debt restructurings. The original terms of the loan are modified or restructured. The terms that may be modified include a reduction in the original stated interest rate, an extension of the original maturity of the loan, a renewal of the loan at an interest rate below current market rates, a reduction in the principal amount of debt outstanding, a reduction in accrued interest or deferral of interest payments. A loan classified as a TDR is classified as a doubtful loan and included in the doubtful loan totals. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the restructured terms for a reasonable period of time, is at the current market rate, and the ultimate collectability of the outstanding principal and interest is no longer questionable, however, although those loans may be placed back on accrual status, they will continue to be classified as doubtful. Consistent with regulatory guidance, a TDR loan that is subsequently modified, but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

Non-Accrual Loans

Non-Accrual Loans

The non-accrual loan policy of our Subsidiary Banks is to discontinue the accrual of interest on loans when management determines that it is probable that future interest accruals will be un-collectible. As it relates to consumer loans, management charges-off those loans when the loan is contractually 90 days past due. Under special circumstances, a consumer or non-consumer loan may be more than 90 days delinquent as to interest or principal and not be placed on non-accrual status. This situation generally results when a Subsidiary Bank has a borrower who is experiencing financial difficulties, but not to the extent that requires a restructuring of indebtedness. The majority of this category is composed of loans that are considered to be adequately secured and/or for which there are expected future payments. When a loan is placed on non-accrual status, any interest accrued, not paid is reversed and charged to operations against interest income. As it relates to non-consumer loans that are not 90 days past due, management will evaluate each of these loans to determine if placing the loan on non-accrual status is warranted. Interest income on non-accrual loans is recognized only to the extent payments are received or when, in management’s opinion, the debtor’s financial condition warrants reestablishment of interest accruals.

Other Real Estate Owned and Repossessed Assets

Other Real Estate Owned and Repossessed Assets

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal). Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL, if necessary. Any subsequent write-downs are charged against other non-interest expense through a valuation allowance. Other real estate owned totaled approximately $35,332,000 and $60,487,000 at December 31, 2021 and 2020, respectively. Other real estate owned is included in other assets.  Repossessed assets consist primarily of non-real estate assets acquired by foreclosure.  Prior to foreclosure, the value of the underlying loan is written down to the fair value of the asset to be repossessed by a charge to the ACL, if necessary.  Repossessed assets are included in other assets on the consolidated financial statements and totaled approximately $4,798,000 and $5,779,000 at December 31, 2021 and 2020, respectively.

Bank Premises and Equipment

Bank Premises and Equipment

Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on straight-line and accelerated methods over the estimated useful lives of the assets. Repairs and maintenance are charged to operations as incurred and expenditures for renewals and betterments are capitalized.   We primarily own all the property we occupy, with the exception of certain branches operating in grocery store or retail shopping centers and certain ATM locations, which are all under operating leases as classified under guidance prior to the issuance of ASU 2016-02, “Leases.”  

Other Investments

Other Investments

Other investments include equity investments in non-financial companies, as well as equity securities with no readily determinable fair market value. Equity investments are accounted for using the equity method of accounting. Equity securities with no readily determinable fair value are accounted for using the cost method.

Revenue recognition

Revenue Recognition

Our revenue is primarily comprised of net interest income on financial assets and liabilities, which are excluded from the scope of ASU No. 2014-09 to ASC 606, “Revenue from Contracts with Customers.” The remaining non-interest revenue streams were identified and then analyzed under the provisions of the update, to:  (i) identify the contract, (ii) identify the performance obligation, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations, and (v) recognize revenue when the performance obligation was satisfied.  Our non-interest revenue contracts with customers are primarily short term and our performance obligation is satisfied at a single point in time, typically within a single period.  No changes to our existing methods for recognizing revenue were made as a result of the accounting standards update.

Income Taxes

Income Taxes

Deferred income tax assets and liabilities are determined using the asset and liability method. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the differences between the book and tax basis of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. We file a consolidated federal income tax return with our subsidiaries.

Recognition of deferred tax assets is based on management’s assessment that the benefit related to certain temporary differences, tax operating loss carry forwards, and tax credits are more likely than not to be realized. A valuation allowance is recorded for the amount of the deferred tax items for which it is more likely than not that the tax benefits will not be realized.

We evaluate uncertain tax positions at the end of each reporting period. We may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. As of December 31, 2021 and 2020, respectively, after evaluating all uncertain tax positions, we have recorded no liability for unrecognized tax benefits at the end of the reporting period. We would recognize any interest accrued on unrecognized tax benefits as other interest expense and penalties as other non-interest expense. During the years ended December 31, 2021, 2020 and 2019, we recognized no interest expense or penalties related to uncertain tax positions.

We file consolidated tax returns in the U.S. Federal jurisdiction and various state jurisdictions. We are no longer subject to U.S. federal or state income tax examinations by tax authorities for years before 2018.

Stock Options

Stock Options

Compensation expense for stock awards is based on the market price of the stock on the measurement date, which is generally the date of grant, and is recognized ratably over the service period of the award. The fair value of stock options granted was estimated using the Black-Sholes-Merton option-pricing model. This model was developed for use in estimating the fair value of publicly traded options that have no vesting restrictions and are fully transferable. Additionally, the model requires the input of highly subjective assumptions. Because our employee stock options have characteristics significantly different from those of publicly traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the Black-Scholes-Merton option-pricing model does not necessarily provide a reliable single measure of the fair value of our stock options.

Net Income Per Share

Net Income Per Share

Basic Earnings Per Share (“EPS”) is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares outstanding during the reporting period. The dilutive effect of stock options is considered in earnings per share calculations, if dilutive, using the treasury stock method.

Goodwill and Identified Intangible Assets

Goodwill and Identified Intangible Assets

Goodwill represents the excess of costs over fair value of assets of businesses acquired. Goodwill is tested for impairment at least annually or on an interim basis if an event triggering impairment may have occurred. As of October 1, 2021, after completing goodwill testing, we have determined that no goodwill impairment exists.

Identified intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Our identified intangible assets relate to core deposits and contract rights. As of December 31, 2021, we have determined that no impairment of identified intangibles exists. Identified intangible assets with definite useful lives are amortized on an accelerated basis over their estimated life. See Note 6—Goodwill and Other Intangible Assets.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets

Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the statement of condition and reported at the lower of the carrying value or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the statement of condition.

Consolidated Statements of Cash Flows

Consolidated Statements of Cash Flows

For purposes of the consolidated statements of cash flows, we consider all short-term investments with a maturity at date of purchase of three months or less to be cash equivalents. Also, we report transactions related to deposits and loans to customers on a net basis.

Accounting for Transfers and Servicing of Financial Assets

Accounting for Transfers and Servicing of Financial Assets

We account for transfers and servicing of financial assets and extinguishments of liabilities based on the application of a financial-components approach that focuses on control. After a transfer of financial assets, we recognize the financial and servicing assets we control and liabilities we have incurred, derecognize financial assets when control has been surrendered and derecognize liabilities when extinguished. We have retained mortgage servicing rights in connection with the sale of mortgage loans. Because we may not initially identify loans as originated for resale, all loans are initially treated as held for investment. The value of the mortgage servicing rights are reviewed periodically for impairment and are amortized in proportion to, and over the period of estimated net servicing income or net servicing losses. The value of the mortgage servicing rights is not significant to the consolidated statements of condition.

Segments of an Enterprise and Related Information

Segments of an Enterprise and Related Information

We operate as one segment. The operating information used by our chief executive officer for purposes of assessing performance and making operating decisions is the consolidated financial statements presented in this report.

We have five active operating subsidiaries, namely, the Subsidiary Banks. We apply the provisions of ASC Topic 280, “Segment Reporting,” in determining our reportable segments and related disclosures.

Comprehensive Income (Loss)

Comprehensive Income (Loss)

Comprehensive income (loss) consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale.

Advertising

Advertising

Advertising costs are expensed as incurred.

Reclassifications

Reclassifications

Certain amounts in the prior year’s presentations have been reclassified to conform to the current presentation. These reclassifications had no effect on previously reported net income or shareholders’ equity.

New Accounting Standards

New Accounting Standards

In June 2016, the FASB issued Accounting Standards Update No. 2016-13 to ASC 326, “Financial Instruments – Credit Losses.” The update amends existing standards for accounting for credit losses for financial assets. The update requires that the expected credit losses on the financial instruments held as of the end of the period being reported be measured based on historical experience, current conditions, and reasonable and supportable forecasts. The update also expands the required disclosures related to significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s financial assets. The update also amended the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The impact of the adoption of the standard is to be recorded as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The accounting standard was effective for us on January 1, 2020. The task force formed last year, which includes key members of the teams that work with the calculation of the allowance for probable loan losses plus members representing the corporate accounting and risk management areas, has worked with the implementation of the update and validation to complete our model/tool. Based on the composition of the portfolio at December 31, 2019 and after finalizing the methodology, the adoption of the update increased our allowance for probable loan losses (referred to as the ACL under ASU 2016-13), by approximately 17.2%, resulting in a cumulative-effect adjustment to retained earnings of approximately $8.3 million, net of tax.  Please refer to Note 4 – Allowance for Credit Losses and the Critical Accounting Policies discussion in Management’s Discussion and Analysis.  

In December 2019, the FASB issued Accounting Standards Update No. 2019-12, to ASC 740, “Income Taxes.”  The update amends existing guidance with the intention of simplifying the accounting for income taxes.  Specifically, the update removes some exceptions in existing guidance around intraperiod tax allocations, recognition of deferred tax liabilities for certain changes in investments in foreign subsidiaries and to the general methodology for calculating taxes on interim periods when year to date losses exceed the anticipated loss for the year.  Additionally, the update clarifies and provides more guidance with respect to the classification of franchise or similar taxes, requirements to evaluate when a step up in the tax basis of goodwill should be considered, eliminates the requirement that a consolidated entity allocate a portion of current and deferred tax expense to a legal entity that is not subject to tax, requires that an entity reflect the effect of changes in tax laws and tax rates in the effective tax rate computed in the interim period that includes the enactment date and makes minor changes for taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method.  The update is effective for fiscal years beginning after December 15, 2020.  The adoption of the update did not have a significant impact on our consolidated financial statements.  

In March 2020, the FASB issued Accounting Standards Update No. 2020-04, “Reference Rate Reform (Topic 848):  Facilitation of the Effects of Reference Rate Reform on Financial Reporting.”  The update provides optional guidance for a limited period of time to ease the potential burden in accounting for and recognizing the effects of reference

rate reform on financial reporting.  The practical expedients and exceptions in the update apply only to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met.  The update does not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022 that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.  

In January 2021, the FASB issued Accounting Standards Update No. 2021-01, “Reference Rate Reform (Topic 848): Scope.”  The update clarifies the applicability of the practical expedients and exceptions issued in ASU 2020-04 to derivative instruments that use an interest rate for margining, discounting or contract price alignment that is modified as a result of reference rate reform.  The update is intended to capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition.  The update was effective as of the date of issuance and can be applied through December 31, 2022.  We have not adopted the provisions of the update and do not anticipate that the adoption of the update will have a significant impact on our consolidated financial statements.    

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Tables)

12 Months Ended

Dec. 31, 2021

Amortized cost and estimated fair value by type of investment security

The amortized cost and estimated fair value by type of investment security at December 31, 2021 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale Debt Securities
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	4,213,441	$	14,159	$	(58,237)	$	4,169,363	$	4,169,363
Obligations of states and political subdivisions		41,519		3,038		—		44,557		44,557
Total investment securities	$	4,254,960	$	17,197	$	(58,237)	$	4,213,920	$	4,213,920

(1) Included in the carrying value of residential mortgage- backed securities are $824,474 of mortgage-backed securities issued by Ginnie Mae and $3,344,889 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

The amortized cost and estimated fair value by type of investment security at December 31, 2020 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	3,400	$	—	$	—	$	3,400	$	3,400
Total investment securities	$	3,400	$	—	$	—	$	3,400	$	3,400

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,006,592	$	32,701	$	(9,339)	$	3,029,954	$	3,029,954
Obligations of states and political subdivisions		47,697		3,131		(14)		50,814		50,814
Total investment securities	$	3,054,289	$	35,832	$	(9,353)	$	3,080,768	$	3,080,768

(1) Included in the carrying value of residential mortgage- backed securities are $371,407 of mortgage-backed securities issued by Ginnie Mae, $2,658,247 of mortgage-backed securities issued by Fannie Mae and Freddie Mac

Amortized cost and fair value of investment securities, by contractual maturity

	Held to Maturity				Available for Sale
	Amortized		Estimated		Amortized		Estimated
	Cost		fair value		Cost		fair value
	(Dollars in Thousands)
Due in one year or less	$	2,200	$	2,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		—		—
Due after ten years		—		—		41,519		44,557
Residential mortgage-backed securities		—		—		4,213,441		4,169,363
Total investment securities	$	3,400	$	3,400	$	4,254,960	$	4,213,920

Gross unrealized losses on investment securities and the related fair value

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)
	$	3,037,188	$	(53,060)	$	423,733	$	(5,177)	$	3,460,921	$	(58,237)

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous loss position, at December 31, 2020 were as follows:

	Less than 12 months				12 months or more				Total
			Unrealized				Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
	(Dollars in Thousands)
Available for sale:
Residential mortgage-backed securities	$	1,462,232	$	(9,339)	$	—	$	—	$	1,462,232	$	(9,339)
Obligations of states and political subdivisions		—		—		757		(14)		757		(14)
	$	1,462,232	$	(9,339)	$	757	$	(14)	$	1,462,989	$	(9,353)

Summary of unrealized and realized gains and losses recognized in net income on equity securities

	Year Ended
	December 31, 2021
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	(123)
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	(123)

	Year Ended
	December 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	107
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	107

	Year Ended
	December 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	158
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$	158

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Loans (Tables)

12 Months Ended

Dec. 31, 2021

Summary of loans, by loan type

	December 31,		December 31,
	2021		2020
	(Dollars in Thousands)
Commercial, financial and agricultural	$	4,497,444	$	4,516,288
Real estate - mortgage		867,831		999,144
Real estate - construction		1,668,113		1,846,757
Consumer		40,966		40,595
Foreign		134,797		138,970
Total loans	$	7,209,151	$	7,541,754

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Allowance for Credit Losses (Tables)

12 Months Ended

Dec. 31, 2021

Loans individually or collectively evaluated for their impairment and related allowance, by loan class

	December 31, 2021
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059
Losses charge to allowance		(8,083)		(2)		(364)		—		(373)		(25)		(176)		(1)		(9,024)
Recoveries credited to allowance		1,943		—		171		—		60		164		46		—		2,384
Net losses charged to allowance		(6,140)		(2)		(193)		—		(313)		139		(130)		(1)		(6,640)
Provision (credit) charged to operations		7,410		(2,220)		5,847		(1,760)		512		(1,955)		111		10		7,955
Balance at December 31, 2021	$	23,178	$	35,390	$	35,654	$	3,291	$	4,073	$	7,754	$	272	$	762	$	110,374

	December 31, 2020
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278
Adoption of ASU 2016-13		4,247		13,391		(4,292)		(355)		(1,580)		(429)		(225)		(410)		10,347
Losses charge to allowance		(8,936)		(19)		(55)		—		(160)		(124)		(280)		—		(9,574)
Recoveries credited to allowance		2,191		35		117		—		21		186		69		10		2,629
Net losses charged to allowance		(6,745)		16		62		—		(139)		62		(211)		10		(6,945)
Provision (credit) charged to operations		13,261		6,053		17,697		3,620		1,831		2,402		185		330		45,379
Balance at December 31, 2020	$	21,908	$	37,612	$	30,000	$	5,051	$	3,874	$	9,570	$	291	$	753	$	109,059

	December 31, 2019
	Domestic														Foreign
			Commercial
			real estate:
			other		Commercial
			construction &		real estate:		Commercial
			land		farmland &		real estate:		Residential:		Residential:
	Commercial		development		commercial		multifamily		first lien		junior lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31, 2018	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charge to allowance		(14,412)		(39)		(7,353)		—		(201)		(435)		(487)		(1)		(22,928)
Recoveries credited to allowance		2,196		113		318		—		26		286		40		—		2,979
Net losses charged to allowance		(12,216)		74		(7,035)		—		(175)		(149)		(447)		(1)		(19,949)
Provision (credit) charged to operations		10,765		2,955		4,215		(22)		470		(35)		542		(47)		18,843
Balance at December 31, 2019	$	11,145	$	18,152	$	16,533	$	1,786	$	3,762	$	7,535	$	542	$	823	$	60,278

	December 31, 2021
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	29	$	1,501,554	$	23,149
Commercial real estate: other construction & land development		589		70		1,667,524		35,320
Commercial real estate: farmland & commercial		562		—		2,710,494		35,654
Commercial real estate: multifamily		131		—		284,405		3,291
Residential: first lien		87		—		403,571		4,073
Residential: junior lien		—		—		464,173		7,754
Consumer		—		—		40,966		272
Foreign		—		—		134,797		762
Total	$	1,667	$	99	$	7,207,484	$	110,275

	December 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,189	$	209	$	1,784,747	$	21,699
Commercial real estate: other construction & land development		17,496		70		1,829,261		37,542
Commercial real estate: farmland & commercial		439		—		2,288,869		30,000
Commercial real estate: multifamily		134		—		440,910		5,051
Residential: first lien		151		—		404,968		3,874
Residential: junior lien		38		—		593,987		9,570
Consumer		—		—		40,595		291
Foreign		—		—		138,970		753
Total	$	19,447	$	279	$	7,522,307	$	108,780

Loans accounted on non-accrual basis, by loan class

	December 31, 2021		December 31, 2020
	(Dollars in Thousands)
Domestic
Commercial	$	298	$	1,189
Commercial real estate: other construction & land development		589		17,496
Commercial real estate: farmland & commercial		562		439
Commercial real estate: multifamily		131		134
Residential: first lien		341		526
Residential: junior lien		—		38
Total non-accrual loans	$	1,921	$	19,822

Loans accounted for as trouble debt restructuring, by loan class

	December 31, 2021		December 31, 2020
		(Dollars in Thousands)
Domestic
Residential: first lien	$	2,254	$	4,078
Residential: junior lien		105		521
Consumer		878		989
Foreign		16		233
Total troubled debt restructuring	$	3,253	$	5,821

Information regarding the aging of past due loans, by loan class

	December 31, 2021
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
	(Dollars in Thousands)
Domestic
Commercial	$	2,534	$	303	$	577	$	577	$	3,414	$	1,498,438	$	1,501,852
Commercial real estate: other construction & land development		499		334		188		188		1,021		1,667,092		1,668,113
Commercial real estate: farmland & commercial		18,164		172		644		307		18,980		2,692,076		2,711,056
Commercial real estate: multifamily		—		—		—		—		—		284,536		284,536
Residential: first lien		2,342		1,212		5,129		4,937		8,683		394,975		403,658
Residential: junior lien		747		115		1,055		1,055		1,917		462,256		464,173
Consumer		231		88		4		4		323		40,643		40,966
Foreign		1,319		232		1,574		1,574		3,125		131,672		134,797
Total past due loans	$	25,836	$	2,456	$	9,171	$	8,642	$	37,463	$	7,171,688	$	7,209,151

	December 31, 2020
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
		(Dollars in Thousands)
Domestic
Commercial	$	1,931	$	1,109	$	563	$	318	$	3,603	$	1,782,333	$	1,785,936
Commercial real estate: other construction & land development		1,059		854		16,587		—		18,500		1,828,257		1,846,757
Commercial real estate: farmland & commercial		2,435		219		186		186		2,840		2,286,468		2,289,308
Commercial real estate: multifamily		126		—		—		—		126		440,918		441,044
Residential: first lien		2,399		926		6,165		5,890		9,490		395,629		405,119
Residential: junior lien		561		247		1,197		1,197		2,005		592,020		594,025
Consumer		318		71		79		79		468		40,127		40,595
Foreign		478		180		568		568		1,226		137,744		138,970
Total past due loans	$	9,307	$	3,606	$	25,345	$	8,238	$	38,258	$	7,503,496	$	7,541,754

Summary of the loan portfolio by credit quality indicator, by loan class

		2021	2020		2019		2018		2017		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2021
Domestic
Commercial
Pass	$	1,041,763	$	167,691	$	77,579	$	58,439	$	37,104	$	5,144	$	1,387,720
Special Review		74,559		497		139		81		—		—		75,276
Watch List - Pass		33,920		—		—		—		—		10		33,930
Watch List - Substandard		3,581		273		716		57		—		1		4,628
Watch List - Doubtful		224		—		—		—		74		—		298
Total Commercial	$	1,154,047	$	168,461	$	78,434	$	58,577	$	37,178	$	5,155	$	1,501,852
Commercial real estate: other construction & land development
Pass	$	966,946	$	312,389	$	308,673	$	37,124	$	16,642	$	2,439	$	1,644,213
Special Review		—		—		211		—		—		—		211
Watch List - Pass		—		23,100		—		—		—		—		23,100
Watch List - Doubtful		485		104		—		—		—		—		589
Total Commercial real estate: other construction & land development	$	967,431	$	335,593	$	308,884	$	37,124	$	16,642	$	2,439	$	1,668,113
Commercial real estate: farmland & commercial
Pass	$	1,001,335	$	680,777	$	288,333	$	417,353	$	96,096	$	97,119	$	2,581,013
Special Review		929		1,292		—		3,448		61		—		5,730
Watch List - Pass		18,790		44,059		—		—		94		1		62,944
Watch List - Substandard		—		54,097		3,899		—		2,355		456		60,807
Watch List - Doubtful		—		224		337		—		—		1		562
Total Commercial real estate: farmland & commercial	$	1,021,054	$	780,449	$	292,569	$	420,801	$	98,606	$	97,577	$	2,711,056
Commercial real estate: multifamily
Pass	$	133,152	$	40,766	$	78,609	$	10,632	$	14,217	$	7,029	$	284,405
Watch List - Doubtful		—		131		—		—		—		—		131
Total Commercial real estate: multifamily	$	133,152	$	40,897	$	78,609	$	10,632	$	14,217	$	7,029	$	284,536
Residential: first lien
Pass	$	128,742	$	52,725	$	57,249	$	49,259	$	29,477	$	85,838	$	403,290
Watch List - Substandard		56		—		103		—		122		—		281
Watch List - Doubtful		—		87		—		—		—		—		87
Total Residential: first lien	$	128,798	$	52,812	$	57,352	$	49,259	$	29,599	$	85,838	$	403,658
Residential: junior lien
Pass	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Total Residential: junior lien	$	130,629	$	123,062	$	59,113	$	30,603	$	40,855	$	79,911	$	464,173
Residential: junior lien
Consumer
Pass	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Total Consumer	$	32,053	$	5,693	$	1,370	$	189	$	9	$	1,652	$	40,966
Foreign
Pass	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Foreign	$	74,811	$	33,360	$	9,223	$	8,852	$	4,790	$	3,761	$	134,797
Total Loans	$	3,641,975	$	1,540,327	$	885,554	$	616,037	$	241,896	$	283,362	$	7,209,151

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at December 31, 2020
Domestic
Commercial
Pass	$	1,168,671	$	240,869	$	145,670	$	85,434	$	13,901	$	10,000	$	1,664,545
Special Review		75,638		—		—		—		—		—		75,638
Watch List - Pass		39,886		11		—		3		—		17		39,917
Watch List - Substandard		3,360		683		289		—		315		—		4,647
Watch List - Doubtful		777		161		92		159		—		—		1,189
Total Commercial	$	1,288,332	$	241,724	$	146,051	$	85,596	$	14,216	$	10,017	$	1,785,936
Commercial
Commercial real estate: other construction & land development
Pass	$	773,165	$	576,707	$	320,308	$	78,174	$	10,534	$	3,343	$	1,762,231
Special Review		20,828		21,650		—		—		—		—		42,478
Watch List - Pass		23,101		1,451		—		—		—		—		24,552
Watch List - Doubtful		16,702		794		—		—		—		—		17,496
Total Commercial real estate: other construction & land development	$	833,796	$	600,602	$	320,308	$	78,174	$	10,534	$	3,343	$	1,846,757
Commercial real estate: farmland & commercial
Pass	$	884,070	$	373,993	$	386,268	$	189,639	$	202,500	$	116,729	$	2,153,199
Special Review		3,041		—		4,758		177		3,218		—		11,194
Watch List - Pass		61,637		942		277		80		—		—		62,936
Watch List - Substandard		53,809		4,986		—		2,269		475		1		61,540
Watch List - Doubtful		—		202		—		—		—		237		439
Total Commercial real estate: farmland & commercial	$	1,002,557	$	380,123	$	391,303	$	192,165	$	206,193	$	116,967	$	2,289,308
Commercial real estate: multifamily
Pass	$	74,577	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	440,910
Watch List - Doubtful		134		—		—		—		—		—		134
Total Commercial real estate: multifamily	$	74,711	$	208,356	$	82,818	$	64,110	$	6,801	$	4,248	$	441,044
Residential: first lien
Pass	$	81,004	$	62,165	$	72,299	$	54,593	$	29,250	$	105,463	$	404,774
Watch List - Pass		—		14		131		—		—		—		145
Watch List - Substandard		—		—		—		—		49		—		49
Watch List - Doubtful		86		—		—		—		—		65		151
Total Residential: first lien	$	81,090	$	62,179	$	72,430	$	54,593	$	29,299	$	105,528	$	405,119
Residential: junior lien
Pass	$	196,308	$	108,276	$	61,636	$	75,056	$	56,705	$	94,454	$	592,435
Special Review		740		—		—		812		—		—		1,552
Watch List- Doubtful		—		—		38		—		—		—		38
Total Residential: junior lien	$	197,048	$	108,276	$	61,674	$	75,868	$	56,705	$	94,454	$	594,025
Consumer
Pass	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Total Consumer	$	30,910	$	7,159	$	875	$	225	$	55	$	1,371	$	40,595
Foreign
Pass	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Foreign	$	93,236	$	19,092	$	11,572	$	6,192	$	3,533	$	5,345	$	138,970
Total Loans	$	3,601,680	$	1,627,511	$	1,087,031	$	556,923	$	327,336	$	341,273	$	7,541,754

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Bank Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Summary of bank premises and equipment, by asset classification

	Estimated
	useful lives				2021		2020
					(Dollars in Thousands)
Bank buildings and improvements	5	-	39	years	$	573,276	$	577,656
Furniture, equipment and vehicles	1	-	20	years		302,847		311,313
Land						113,118		117,848
Less: accumulated depreciation						(542,159)		(526,939)
Bank premises and equipment, net					$	447,082	$	479,878

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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of the entity's identified intangible assets

	Carrying		Accumulated
	Amount		Amortization		Net
	(Dollars in Thousands)
December 31, 2021:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—
December 31, 2020:
Core deposit premium	$	58,675	$	58,675	$	—
Identified intangible (contract rights)		2,022		2,022		—
Total identified intangibles	$	60,697	$	60,697	$	—

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Deposits (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of deposits and related interest expense

	2021		2020
	(Dollars in Thousands)
Deposits:
Demand - non-interest bearing
Domestic	$	4,805,999	$	3,781,277
Foreign		1,032,527		934,537
Total demand non-interest bearing		5,838,526		4,715,814
Savings and interest bearing demand
Domestic		3,555,279		2,919,314
Foreign		1,035,269		933,191
Total savings and interest bearing demand		4,590,548		3,852,505
Time, certificates of deposit $100,000 or more
Domestic		794,757		797,692
Foreign		866,160		822,387
Less than $100,000
Domestic		286,499		291,473
Foreign		241,387		241,989
Total time, certificates of deposit		2,188,803		2,153,541
Total deposits	$	12,617,877	$	10,721,860

	2021		2020		2019
	(Dollars in Thousands)
Interest expense:
Savings and interest bearing demand
Domestic	$	3,268	$	5,098	$	13,462
Foreign		842		1,260		2,917
Total savings and interest bearing demand		4,110		6,358		16,379
Time, certificates of deposit $100,000 or more
Domestic		6,652		8,827		7,804
Foreign		3,452		7,536		9,407
Less than $100,000
Domestic		984		1,781		2,232
Foreign		567		1,086		1,527
Total time, certificates of deposit		11,655		19,230		20,970
Total interest expense on deposits	$	15,765	$	25,588	$	37,349

Scheduled maturities of time deposits

Scheduled maturities of time deposits as of December 31, 2021 were as follows:

	Total
	(in thousands)
2022	$	2,071,684
2023		86,480
2024		20,788
2025		9,608
2026		231
Thereafter		12
Total	$	2,188,803

Scheduled maturities of time deposits in amounts of $100,000 or more

	Total
	(in thousands)
Due within 3 months or less	$	677,946
Due after 3 months and within 6 months		407,731
Due after 6 months and within 12 months		506,392
Due after 12 months		68,848
	$	1,660,917

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Securities Sold Under Repurchase Agreements (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of repurchase agreements

	Collateral Securities				Repurchase Borrowing
	Book Value of		Fair Value of		Balance of		Weighted Average
	Securities Sold		Securities Sold		Liability		Interest Rate
	(Dollars in Thousands)
December 31, 2021 term:
Overnight agreements	$	500,495	$	492,026	$	428,235	0.16	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,452		11,229		11,437	0.48
Total	$	511,947	$	503,255	$	439,672	0.17	%
December 31, 2020 term:
Overnight agreements	$	506,020	$	507,164	$	416,757	0.13	%
1 to 29 days		—		—		—	—
30 to 90 days		—		—		—	—
Over 90 days		11,684		11,641		11,391	0.43
Total	$	517,704	$	518,805	$	428,148	0.14	%

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Other Borrowed Funds (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of other borrowed funds

	December 31,
	2021			2020
	(Dollars in Thousands)
Federal Home Loan Bank advances—short-term
Balance at year end	$	—		$	—
Rate on balance outstanding at year end		—	%		—	%
Average daily balance	$	—		$	110,776
Average rate		—	%		1.19	%
Maximum amount outstanding at any month end	$	—		$	292,000
Federal Home Loan Bank advances—long-term(1)
Balance at year end	$	436,138		$	436,327
Rate on balance outstanding at year end		1.73	%		1.73	%
Average daily balance	$	436,225		$	436,411
Average rate		1.71	%		1.71	%
Maximum amount outstanding at any month end	$	436,311		$	436,495

(1) Long-term advances at December 31, 2021 and December 31, 2020 consisted of both amortizing and non-amortizing advances.  The non-amortizing advances mature in the following increments:  $75,000,000 in July 2028, $100,000,000 in March 2033 and $250,000,000 in August 2033 and are callable by the FHLB on a quarterly basis.  Two amortizing advances are outstanding at December 31, 2021 in the amounts of $3,033,000 and $8,104,000 and mature in December 2033 and November 2033, respectively.  The amortization on the amortizing long-term advances totals approximately $194,000, $199,000, $204,000, $210,000 and $2215,000 for the years ending December 31, 2022, 2023, 2024, 2025 and December 31, 2026, respectively.      

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Junior Subordinated Deferrable Interest Debentures (Tables)

12 Months Ended

Dec. 31, 2021

Junior subordinated interest deferrable debentures, major types of business trusts

	Junior
	Subordinated
	Deferrable
	Interest		Repricing	Interest		Interest				Optional
	Debentures		Frequency	Rate		Rate Index(1)			Maturity Date	Redemption Date(1)
	(Dollars in Thousands)
Trust VIII	$	25,774	Quarterly	3.17	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	1.75	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	1.78	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	1.75	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	1.62	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

(1) The Capital Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

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Earnings per Share ("EPS") (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of calculation of the basic EPS and the diluted EPS

	Net Income		Shares	Per Share
	(Numerator)		(Denominator)	Amount
	(Dollars in Thousands,
	Except Per Share Amounts)
December 31, 2021:
Basic EPS
Net income available to common shareholders	$	253,922	63,352,737	$	4.01
Potential dilutive common shares and warrants		—	133,629
Diluted EPS	$	253,922	63,486,366	$	4.00
December 31, 2020:
Basic EPS
Net income available to common shareholders	$	167,319	63,725,819	$	2.63
Potential dilutive common shares and warrants		—	127,316
Diluted EPS	$	167,319	63,853,135	$	2.62
December 31, 2019:
Basic EPS
Net income available to common shareholders	$	205,104	65,476,606	$	3.13
Potential dilutive common shares		—	209,078
Diluted EPS	$	205,104	65,685,684	$	3.12

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International Operations (Tables)

12 Months Ended

Dec. 31, 2021

Summary of assets attributable to international operations

	2021		2020
	(Dollars in Thousands)
Loans:
Commercial	$	91,861	$	90,177
Others		42,936		48,793
		134,797		138,970
Less allowance for probable loan losses		(762)		(753)
Net loans	$	134,035	$	138,217
Accrued interest receivable	$	449	$	605

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of current and deferred portions of net income tax expense

	2021		2020		2019
	(Dollars in Thousands)
Current
U.S.	$	59,591	$	43,794	$	48,559
State		5,272		3,709		2,944
Foreign		—		58		38
Total current taxes		64,863		47,561		51,541
Deferred
U.S.		3,794		(2,733)		2,979
State		(252)		(389)		330
Total deferred taxes		3,542		(3,122)		3,309
Total income taxes	$	68,405	$	44,439	$	54,850

Schedule of income tax expense differences from the amount computed by applying the U.S. Federal income tax rate to income before income taxes

	2021		2020		2019
	(Dollars in Thousands)
Computed expected tax expense	$	68,011	$	45,218	$	55,086
Change in taxes resulting from:
Tax-exempt interest income		(2,970)		(2,709)		(2,550)
State tax, net of federal income taxes, tax credit and refunds		3,966		2,622		2,587
Other investment income		(1,753)		(2,205)		(1,480)
Net investment in low income housing investments		203		1,990		623
Other		948		(477)		584
Actual tax expense	$	68,405	$	44,439	$	54,850

Schedule of tax effects of temporary difference that give rise to significant portions of the deferred tax assets and deferred tax liabilities

	2021		2020
	(Dollars in Thousands)
Deferred tax assets:
Loans receivable, principally due to the allowance for probable loan losses	$	22,773	$	21,921
Other real estate owned		1,227		1,183
Accrued expenses		81		81
Net unrealized losses on available for sale investment securities		9,062		—
Other		4,842		5,649
Total deferred tax assets		37,985		28,834
Deferred tax liabilities:
Bank premises and equipment, principally due to differences on depreciation		(12,163)		(12,350)
Net unrealized gains on available for sale investment securities		—		(5,679)
Impairment charges on available-for-sale securities		(19)		(19)
Identified intangible assets and goodwill		(13,966)		(13,807)
Other		(24,235)		(20,551)
Total deferred tax liabilities		(50,383)		(52,406)
Net deferred tax liability	$	(12,398)	$	(23,572)

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Stock Options (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Black-Scholes-Merton option valuation model assumptions

	2021		2020
Expected Life (Years)	7.00		7.00
Dividend yield	3.18	%	6.04	%
Interest rate	1.02	%	0.74	%
Volatility	37.84	%	29.04	%

Summary of option activity under stock option plans

				Weighted
		Weighted		average
		average		remaining	Aggregate
	Number of	exercise		contractual	intrinsic
	options	price		term (years)	value ($)
					(in Thousands)
Options outstanding at December 31, 2020	651,127	$	27.24
Plus: Options granted	18,000		37.76
Less:
Options exercised	110,000		21.94
Options expired	—		—
Options forfeited	38,576		33.19
Options outstanding at December 31, 2021	520,551		28.28	4.49	$	7,344
Options fully vested and exercisable at December 31, 2021	290,914	$	23.29	2.71	$	5,557

Schedule of other information pertaining to option activity

	Twelve Months Ended December 31,
	2021		2020		2019
Weighted average grant date fair value of stock options granted	$	10.20	$	2.46	$	7.38
Total fair value of stock options vested	$	1,308,000	$	1,218,000	$	1,333,000
Total intrinsic value of stock options exercised	$	2,536,000	$	356,000	$	2,373,000

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Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of financial amounts of instruments, whose contract amounts represent credit risks

Commitments to extend credit	$	2,679,462,000
Credit card lines		13,702,000
Standby letters of credit		111,955,000
Commercial letters of credit		594,000

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Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of the Company's and the bank subsidiaries' actual capital amounts and ratios

					For Capital Adequacy				To Be Well-Capitalized
					Purposes				Under Prompt Corrective
	Actual				Phase In Schedule				Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2021:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	2,057,928	20.47	%	$	703,710	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			456,544	7.000		$	423,934	6.50	%
International Bank of Commerce, Brownsville		315,957	19.80			111,690	7.000			103,712	6.50
International Bank of Commerce, Oklahoma		221,567	18.59			83,452	7.000			77,491	6.50
Commerce Bank		102,375	46.06			15,559	7.000			14,448	6.50
International Bank of Commerce, Zapata		75,303	42.25			12,475	7.000			11,584	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,284,579	22.73	%	$	1,055,565	10.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,367,487	20.97			684,816	10.500		$	652,206	10.00	%
International Bank of Commerce, Brownsville		334,495	20.96			167,535	10.500			159,557	10.00
International Bank of Commerce, Oklahoma		232,454	19.50			125,178	10.500			119,217	10.00
Commerce Bank		104,996	47.24			23,339	10.500			22,227	10.00
International Bank of Commerce, Zapata		77,354	43.40			18,713	10.500			17,822	10.00
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	2,170,682	21.59	%	$	854,505	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,287,687	19.74			554,375	8.500		$	521,764	8.00	%
International Bank of Commerce, Brownsville		315,957	19.80			135,623	8.500			127,645	8.00
International Bank of Commerce, Oklahoma		221,567	18.59			101,334	8.500			95,374	8.00
Commerce Bank		102,375	46.06			18,893	8.500			17,782	8.00
International Bank of Commerce, Zapata		75,303	42.25			15,149	8.500			14,258	8.00
Tier 1 Capital (to Average Assets):
Consolidated	$	2,170,682	13.94	%	$	622,671	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,287,687	11.14			462,225	4.00			577,781	5.00	%
International Bank of Commerce, Brownsville		315,957	20.17			62,663	4.00			78,329	5.00
International Bank of Commerce, Oklahoma		221,567	11.49			77,164	4.00			96,455	5.00
Commerce Bank		102,375	16.10			25,441	4.00			31,801	5.00
International Bank of Commerce, Zapata		75,303	16.15			18,651	4.00			23,314	5.00

										To Be Well-Capitalized
					For Capital Adequacy					Under Prompt Corrective
	Actual				Purposes					Action Provisions
	Amount		Ratio		Amount		Ratio			Amount	Ratio
					(greater than		(greater than		(greater than		(greater than
					or equal to)		or equal to)		or equal to)		or equal to)
	(Dollars in Thousands)
As of December 31, 2020:
Common Equity Tier 1 (to Risk Weighted Assets):
Consolidated	$	1,874,641	19.05	%	$	688,678	7.000	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			498,492	7.000		$	462,885	6.50	%
International Bank of Commerce, Oklahoma		207,339	17.45			83,150	7.000			77,211	6.50
International Bank of Commerce, Brownsville		189,575	22.18			59,843	7.000			55,569	6.50
International Bank of Commerce, Zapata		71,369	34.51			14,476	7.000			13,442	6.50
Commerce Bank		93,426	35.64			18,347	7.000			17,037	6.50
Total Capital (to Risk Weighted Assets):
Consolidated	$	2,105,360	21.40	%	$	1,033,017	10.500	%		N/A	N/A	%
International Bank of Commerce, Laredo		1,380,685	19.39			747,737	10.500		$	712,131	10.00
International Bank of Commerce, Oklahoma		218,657	18.41			124,725	10.500			118,786	10.00
International Bank of Commerce, Brownsville		200,269	23.43			89,765	10.500			85,490	10.00
International Bank of Commerce, Zapata		73,510	35.55			21,714	10.500			20,680	10.00
Commerce Bank		96,240	36.72			27,521	10.500			26,210	10.00
Tier 1 Capital (to Risk Weighted Assets):												%
Consolidated	$	1,992,403	20.25	%	$	836,252	8.500	%		N/A	N/A
International Bank of Commerce, Laredo		1,295,437	18.19			605,311	8.500		$	569,705	8.00
International Bank of Commerce, Oklahoma		207,339	17.45			100,968	8.500			95,029	8.00
International Bank of Commerce, Brownsville		189,575	22.18			72,667	8.500			68,392	8.00
International Bank of Commerce, Zapata		71,369	34.51			17,578	8.500			16,544	8.00
Commerce Bank		93,426	35.64			22,279	8.500			20,968	8.00	%
Tier 1 Capital (to Average Assets):
Consolidated	$	1,992,403	14.92	%	$	534,228	4.00	%	$	N/A	N/A
International Bank of Commerce, Laredo		1,295,437	13.11			395,289	4.00			494,112	5.00
International Bank of Commerce, Oklahoma		207,339	12.98			63,879	4.00			79,848	5.00
International Bank of Commerce, Brownsville		189,575	14.55			52,101	4.00			65,127	5.00
International Bank of Commerce, Zapata		71,369	16.52			17,277	4.00			21,596	5.00
Commerce Bank		93,426	16.69			22,394	4.00			27,993	5.00

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Fair Value (Tables)

12 Months Ended

Dec. 31, 2021

Assets and liabilities measured at fair value on a recurring basis

The following table represents financial instruments reported on the consolidated statements of condition at their fair value as of December 31, 2021 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2021		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	4,169,363	$	—	$	4,169,363	$	—
States and political subdivisions		44,557		—		44,557		—
Equity Securities		6,079		6,079		—		—
	$	4,219,999	$	6,079	$	4,213,920	$	—

The following table represents financial instruments reported on the consolidated balance sheets at their fair value as of December 31, 2020 by level within the fair value measurement hierarchy.

			Fair Value Measurements at
			Reporting Date Using
			(in Thousands)
			Quoted
			Prices in
			Active		Significant
	Assets/Liabilities		Markets for		Other		Significant
	Measured at		Identical		Observable		Unobservable
	Fair Value		Assets		Inputs		Inputs
	December 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,029,954	$	—	$	3,029,954	$	—
States and political subdivisions		50,814		—		50,814		—
Equity Securities		6,202		6,202		—		—
	$	3,086,970	$	6,202	$	3,080,768	$	—

Assets measured at fair value on a non-recurring basis

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2021 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	December 31,		Assets		Inputs		Inputs		During
	2021		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	55	$	—	$	—	$	55	$	209
Other real estate owned	$	18,095	$	—	$	—	$	18,095	$	2,655

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the year ended December 31, 2020 by level within the fair value measurement hierarchy:

			Fair Value Measurements at Reporting
			Date Using
			(in thousands)
			Quoted
	Assets/Liabilities		Prices in
	Measured at		Active		Significant
	Fair Value		Markets		Other		Significant		Net (Credit)
	Year ended		for Identical		Observable		Unobservable		Provision
	December 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	393	$	—	$	—	$	393	$	(86)
Other real estate owned		6,241		—		—		6,241		1,539

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Condition (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of condensed statements of condition of Parent Company

(Dollars in Thousands)

	2021		2020
ASSETS
Cash	$	62,564	$	66,252
Other investments		90,555		77,661
Net loans		10,401		11,950
Investment in subsidiaries		2,281,597		2,167,516
Goodwill		3,365		3,365
Other assets		1,644		—
Total assets	$	2,450,126	$	2,326,744
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Junior subordinated deferrable interest debentures	$	134,642	$	134,642
Due to IBC Trading		21		21
Other liabilities		6,982		14,083
Total liabilities		141,645		148,746
Shareholders’ equity:
Common shares		96,351		96,241
Surplus		152,144		149,334
Retained earnings		2,470,710		2,289,626
Accumulated other comprehensive (loss) income		(31,980)		20,825
		2,687,225		2,556,026
Less cost of shares in treasury		(378,744)		(378,028)
Total shareholders’ equity		2,308,481		2,177,998
Total liabilities and shareholders’ equity	$	2,450,126	$	2,326,744

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Income (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of condensed statements of income of Parent Company

(Dollars in Thousands)

	2021		2020		2019
Income:
Dividends from subsidiaries	$	80,882	$	130,950	$	127,750
Interest income on notes receivable		1,139		357		922
Interest income (loss) on other investments		9,662		(1,126)		(514)
Other		58		5		18
Total income		91,741		130,186		128,176
Expenses:
Interest expense (Debentures)		2,792		3,832		6,435
Provision for credit loss		—		27		—
Other		2,272		1,988		2,749
Total expenses		5,064		5,847		9,184
Income before federal income taxes and equity in undistributed net income of subsidiaries		86,677		124,339		118,992
Income tax expense (benefit)		1,358		(1,339)		(1,878)
Income before equity in undistributed net income of subsidiaries		85,319		125,678		120,870
Equity in undistributed net income of subsidiaries		168,603		41,641		84,234
Net income	$	253,922	$	167,319	$	205,104

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of condensed statements of cash flows of Parent Company

(Dollars in Thousands)

	2021		2020		2019
Operating activities:
Net income	$	253,922	$	167,319	$	205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss		—		27		—
Unrealized (gain) loss on equity securities with readily determinable fair values		(51)		22		(16)
Stock compensation expense		506		743		980
(Decrease) increase in other liabilities		(8,084)		2,467		(58)
Equity in undistributed net income of subsidiaries		(168,603)		(41,641)		(84,234)
Net cash provided by operating activities		77,690		128,937		121,776
Investing activities:
Net decrease (increase) in notes receivable		1,549		—		(12,100)
(Decrease) increase in other assets and other investments		(11,787)		31,289		5,915
Net cash (used in) provided by investing activities		(10,238)		31,289		(6,185)
Financing activities:
Redemption of long-term debt		—		—		(25,774)
Proceeds from stock transactions		2,414		542		1,923
Payments of cash dividends - common		(72,838)		(69,928)		(68,670)
Purchase of treasury stock		(716)		(48,878)		(17,845)
Net cash used in financing activities		(71,140)		(118,264)		(110,366)
(Decrease) increase in cash		(3,688)		41,962		5,225
Cash at beginning of year		66,252		24,290		19,065
Cash at end of year	$	62,564	$	66,252	$	24,290

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Summary of Significant Accounting Policies (Details)			12 Months Ended
	Jan. 01, 2020 USD ($)	Oct. 01, 2019 USD ($)	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Number of insurance-related subsidiaries | item			1
Investment Securities
Number of components in which other-than-temporary impairment is segregated | item			2
Non-Accrual Loans
Period of charge off for past due unsecured consumer loans			90 days
Minimum period that past due unsecured loans outstanding may not be placed on nonaccrual status under special circumstances			90 days
Maximum period of non-consumer loans outstanding that is used to evaluate whether loans should be placed on non-accrual status			90 days
Other Real Estate Owned and Repossessed Assets
Other real estate owned			$ 35,332,000	$ 60,487,000
Repossessed assets			$ 4,798,000	5,779,000
Income Taxes
Percentage of likelihood of realization of recognized tax benefit			50.00%
Liability for unrecognized tax benefits			$ 0	0
Interest expense related to uncertain tax positions			0	0	$ 0
Penalties related to uncertain tax positions			0	0	$ 0
Goodwill and Identified Intangible Assets
Goodwill impairment loss		$ 0
Impairment of identified intangible assets			$ 0
Segments of an Enterprise and Related Information
Number of operating segments | item			1
Number of active operating bank subsidiaries | item			5
New Accounting Standards
Retained Earnings (Accumulated Deficit)			$ 2,470,710,000	$ 2,289,626,000
ASU 2016-13 | Adjustment
New Accounting Standards
Percentage of Increase in Allowance for Loan Losses	17.20%
Retained Earnings (Accumulated Deficit)	$ 8,300,000

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Held-to-maturity securities
Amortized cost	$ 3,400,000	$ 3,400,000
Estimated fair value	3,400,000	3,400,000
Carrying Value	3,400,000	3,400,000
Available-for-sale securities
Amortized cost	4,254,960,000	3,054,289,000
Gross unrealized gains	17,197,000	35,832,000
Gross unrealized losses	(58,237,000)	(9,353,000)
Available for sale debt securities	4,213,920,000	3,080,768,000
Total Amortized cost	4,254,960,000	3,054,289,000
Available for sale debt securities and equity securities	4,213,920,000
Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities and equity securities	4,213,920,000	3,080,768,000
Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities and equity securities	4,213,920,000	3,080,768,000
Residential mortgage-backed securities
Available-for-sale securities
Amortized cost	4,213,441,000	3,006,592,000
Gross unrealized gains	14,159,000	32,701,000
Gross unrealized losses	(58,237,000)	(9,339,000)
Residential mortgage-backed securities | Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	4,169,363,000	3,029,954,000
Residential mortgage-backed securities | Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	4,169,363,000	3,029,954,000
US Government Corporations and Agencies Securities [Member]
Available-for-sale securities
Available for sale debt securities	824,474,000	371,407
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Available-for-sale securities
Available for sale debt securities	3,344,889,000	2,658,247
States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities
Amortized cost	41,519,000	47,697,000
Gross unrealized gains	3,038,000	3,131,000
Gross unrealized losses		(14,000)
States and Political Subdivisions Debt Securities [Member] | Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	44,557,000	50,814,000
States and Political Subdivisions Debt Securities [Member] | Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	44,557,000	50,814,000
Other Debt Obligations [Member]
Held-to-maturity securities
Amortized cost	3,400,000	3,400,000
Estimated fair value	3,400,000	3,400,000
Carrying Value	$ 3,400,000	$ 3,400,000

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Contractual Maturities and Estimated Fair Values) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less, held-to-maturity debt securities amortized cost	$ 2,200,000
Due after one year through five years, held-to-maturity debt securities amortized cost	1,200,000
Amortized cost, held-to-maturity debt securities	3,400,000	$ 3,400,000
Fair Value
Due in one year or less, held-to-maturity debt securities, Estimated fair value	2,200,000
Due after one year through five years, held-to-maturity debt securities, Estimated fair value	1,200,000
Estimated fair value	3,400,000	3,400,000
Available-for-sale debt securities amortized cost disclosures
Due after ten years, available-for-sale debt securities amortized cost	41,519,000
Residential mortgage-backed securities, amortized cost	4,213,441,000
Amortized cost, Available-for-sale securities	4,254,960,000	3,054,289,000
Available for sale debt securities, Estimated Fair Value Disclosures
Due after ten years, available-for-sale debt securities, Estimated Fair Value	44,557,000
Residential mortgage-backed securities, Estimated Fair Value	4,169,363,000
Estimated fair value, Available for sale securities	4,213,920,000	3,080,768,000
Available for sale debt securities, Estimated Fair Value Disclosures
Proceeds from sales and calls of available for sale securities	5,890,000	42,350,000	$ 94,585,000
Proceeds from sales and calls of available for sale securities	5,890,000	42,350,000	94,585,000
Proceeds from sales of mortgage-backed securities	0	0	0
Gross gains realized on sales	0	1,000	3,000
Gross losses realized on sales	16,000	$ 6,000	$ 15,000
Collateral Pledged
Available-for-sale debt securities amortized cost disclosures
Amortized cost, Available-for-sale securities	1,519,652,000
Available for sale debt securities, Estimated Fair Value Disclosures
Fair value of available for sale investment securities pledged	$ 1,497,929,000

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Unrealized Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Available for sale:
Fair value, less than 12 months	$ 3,037,188	$ 1,462,232
Unrealized losses, less than 12 Months	(53,060)	(9,339)
Fair value, 12 months or more	423,733	757
Unrealized losses, 12 Months or More	(5,177)	(14)
Fair value, Total	3,460,921	1,462,989
Unrealized losses, Total	(58,237)	(9,353)
Residential Mortgage Backed Securities [Member]
Available for sale:
Fair value, less than 12 months	3,037,188	1,462,232
Unrealized losses, less than 12 Months	(53,060)	(9,339)
Fair value, 12 months or more	423,733
Unrealized losses, 12 Months or More	(5,177)
Fair value, Total	3,460,921	1,462,232
Unrealized losses, Total	$ (58,237)	(9,339)
States and Political Subdivisions Debt Securities [Member]
Available for sale:
Fair value, 12 months or more		757
Unrealized losses, 12 Months or More		(14)
Fair value, Total		757
Unrealized losses, Total		$ (14)

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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Unrealized and realized gains and losses recognized in net income on equity securities ) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments
Equity Securities	$ 6,079,000	$ 6,202,000
Summary of unrealized and realized gains and losses recognized in net income on equity securities
Net gains (losses) recognized during the period on equity securities	(123,000)	107,000	$ 158,000
Unrealized gain on equity securities with readily determinable fair values	$ (123,000)	$ 107,000	$ 158,000

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Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Summary of loans, by loan type
Total loans	$ 7,209,151	$ 7,541,754
Commercial, financial and agricultural
Summary of loans, by loan type
Total loans	4,497,444	4,516,288
Real estate - mortgage
Summary of loans, by loan type
Total loans	867,831	999,144
Obligations of states and political subdivisions
Summary of loans, by loan type
Total loans	1,668,113	1,846,757
Consumer
Summary of loans, by loan type
Total loans	40,966	40,595
Foreign.
Summary of loans, by loan type
Total loans	$ 134,797	$ 138,970

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Allowance for Credit Losses (By Loan Class) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for Credit Losses
Balance at the beginning of the period		$ 61,384	$ 109,059	$ 60,278	$ 61,384
Losses charged to allowance			(9,024)	(9,574)	(22,928)
Recoveries credited to allowance			2,384	2,629	2,979
Net (losses) recoveries charged to allowance			(6,640)	(6,945)	(19,949)
Credit loss expense			7,955	45,379	18,843
Balance at the end of the period			110,374	109,059	60,278
Nonperforming Financing Receivable [Member]
Allowance for Credit Losses
Credit loss expense	$ (9,500)	(9,500)
ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				10,347
Balance at the end of the period					10,347
Commercial, financial and agricultural | Domestic | Commercial.
Allowance for Credit Losses
Balance at the beginning of the period		12,596	21,908	11,145	12,596
Losses charged to allowance			(8,083)	(8,936)	(14,412)
Recoveries credited to allowance			1,943	2,191	2,196
Net (losses) recoveries charged to allowance			(6,140)	(6,745)	(12,216)
Credit loss expense			7,410	13,261	10,765
Balance at the end of the period			23,178	21,908	11,145
Commercial, financial and agricultural | Domestic | Commercial. | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				4,247
Balance at the end of the period					4,247
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial
Allowance for Credit Losses
Balance at the beginning of the period		19,353	30,000	16,533	19,353
Losses charged to allowance			(364)		(7,353)
Recoveries credited to allowance			171		318
Net (losses) recoveries charged to allowance			(193)		(7,035)
Credit loss expense			5,847		4,215
Balance at the end of the period			35,654	30,000	16,533
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily
Allowance for Credit Losses
Balance at the beginning of the period		1,808	5,051	1,786	1,808
Credit loss expense			(1,760)	3,620	(22)
Balance at the end of the period			3,291	5,051	1,786
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				(355)
Balance at the end of the period					(355)
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development
Allowance for Credit Losses
Balance at the beginning of the period		15,123	37,612	18,152	15,123
Losses charged to allowance			(2)	(19)	(39)
Recoveries credited to allowance				35	113
Net (losses) recoveries charged to allowance			(2)	16	74
Credit loss expense			(2,220)	6,053	2,955
Balance at the end of the period			35,390	37,612	18,152
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				13,391
Balance at the end of the period					13,391
Obligations of states and political subdivisions | Domestic | Commercial real estate: farmland & commercial
Allowance for Credit Losses
Balance at the beginning of the period			30,000	16,533
Losses charged to allowance				(55)
Recoveries credited to allowance				117
Net (losses) recoveries charged to allowance				62
Credit loss expense				17,697
Balance at the end of the period				30,000	16,533
Obligations of states and political subdivisions | Domestic | Commercial real estate: farmland & commercial | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				(4,292)
Balance at the end of the period					(4,292)
Real estate - mortgage | Domestic | Residential: first lien
Allowance for Credit Losses
Balance at the beginning of the period		3,467	3,874	3,762	3,467
Losses charged to allowance			(373)	(160)	(201)
Recoveries credited to allowance			60	21	26
Net (losses) recoveries charged to allowance			(313)	(139)	(175)
Credit loss expense			512	1,831	470
Balance at the end of the period			4,073	3,874	3,762
Real estate - mortgage | Domestic | Residential: first lien | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				(1,580)
Balance at the end of the period					(1,580)
Real estate - mortgage | Domestic | Residential Junior Lien
Allowance for Credit Losses
Balance at the beginning of the period		7,719	9,570	7,535	7,719
Losses charged to allowance			(25)	(124)	(435)
Recoveries credited to allowance			164	186	286
Net (losses) recoveries charged to allowance			139	62	(149)
Credit loss expense			(1,955)	2,402	(35)
Balance at the end of the period			7,754	9,570	7,535
Real estate - mortgage | Domestic | Residential Junior Lien | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				(429)
Balance at the end of the period					(429)
Consumer | Domestic
Allowance for Credit Losses
Balance at the beginning of the period		447	291	542	447
Losses charged to allowance			(176)	(280)	(487)
Recoveries credited to allowance			46	69	40
Net (losses) recoveries charged to allowance			(130)	(211)	(447)
Credit loss expense			111	185	542
Balance at the end of the period			272	291	542
Consumer | Domestic | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				(225)
Balance at the end of the period					(225)
Foreign. | Foreign
Allowance for Credit Losses
Balance at the beginning of the period		$ 871	753	823	871
Losses charged to allowance			(1)		(1)
Recoveries credited to allowance				10
Net (losses) recoveries charged to allowance			(1)	10	(1)
Credit loss expense			10	330	(47)
Balance at the end of the period			$ 762	753	823
Foreign. | Foreign | ASU 2016-13 | Adjustment
Allowance for Credit Losses
Balance at the beginning of the period				$ (410)
Balance at the end of the period					$ (410)

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Allowance for Credit Losses (Impairment By Loan Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	$ 1,667	$ 19,447
Loans Individually Evaluated for Impairment, Allowance	99	279
Loans Collectively Evaluated for Impairment, Recorded Investment	7,207,484	7,522,307
Loans Collectively Evaluated for Impairment, Allowance	110,275	108,780
Commercial, financial and agricultural | Domestic | Commercial.
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	298	1,189
Loans Individually Evaluated for Impairment, Allowance	29	209
Loans Collectively Evaluated for Impairment, Recorded Investment	1,501,554	1,784,747
Loans Collectively Evaluated for Impairment, Allowance	23,149	21,699
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	562	439
Loans Collectively Evaluated for Impairment, Recorded Investment	2,710,494	2,288,869
Loans Collectively Evaluated for Impairment, Allowance	35,654	30,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	131	134
Loans Collectively Evaluated for Impairment, Recorded Investment	284,405	440,910
Loans Collectively Evaluated for Impairment, Allowance	3,291	5,051
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	589	17,496
Loans Individually Evaluated for Impairment, Allowance	70	70
Loans Collectively Evaluated for Impairment, Recorded Investment	1,667,524	1,829,261
Loans Collectively Evaluated for Impairment, Allowance	35,320	37,542
Real estate - mortgage | Domestic | Residential: first lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	87	151
Loans Collectively Evaluated for Impairment, Recorded Investment	403,571	404,968
Loans Collectively Evaluated for Impairment, Allowance	4,073	3,874
Real estate - mortgage | Domestic | Residential Junior Lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment		38
Loans Collectively Evaluated for Impairment, Recorded Investment	464,173	593,987
Loans Collectively Evaluated for Impairment, Allowance	7,754	9,570
Consumer | Domestic
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Collectively Evaluated for Impairment, Recorded Investment	40,966	40,595
Loans Collectively Evaluated for Impairment, Allowance	272	291
Foreign. | Foreign
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Collectively Evaluated for Impairment, Recorded Investment	134,797	138,970
Loans Collectively Evaluated for Impairment, Allowance	$ 762	$ 753

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Allowance for Credit Losses (Non-accrual Basis By Loan Class) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 1,921,000	$ 19,822,000	$ 4,886,000
Reduced interest income on non-accrual loans	169,000	694,000	$ 340,000
Commercial, financial and agricultural | Domestic | Commercial.
Loan loss allowances, financing receivable past due
Non-accrual loans, total	298,000	1,189,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial
Loan loss allowances, financing receivable past due
Non-accrual loans, total	562,000	439,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily
Loan loss allowances, financing receivable past due
Non-accrual loans, total	131,000	134,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development
Loan loss allowances, financing receivable past due
Non-accrual loans, total	589,000	17,496,000
Real estate - mortgage | Domestic | Residential: first lien
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 341,000	526,000
Real estate - mortgage | Domestic | Residential Junior Lien
Loan loss allowances, financing receivable past due
Non-accrual loans, total		$ 38,000

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Allowance for Credit Losses (Impaired Loans) (Details)	12 Months Ended
	Dec. 31, 2021 USD ($)	Feb. 18, 2022 USD ($) loan	Dec. 31, 2020 USD ($)
Interest Recognized
Total troubled debt restructuring	$ 3,253,000		$ 5,821,000
Period of charge off for past due unsecured commercial loans	90 days
Subsequent Event
Interest Recognized
Amount of loans with some degree of payment deferral		$ 123,194,000
Paycheck protection program loans (COVID-19 program)
Interest Recognized
Period of time PPP loans cover payroll and certain other costs	168 days
Interest rate on receivable	1.00%
Paycheck protection program loans (COVID-19 program) | Subsequent Event
Interest Recognized
Number of loans | loan		968
Amount of loans outstanding		$ 71,149,000
Paycheck protection program loans (COVID-19 program) | Loans made prior to June 5, 2020
Interest Recognized
Term of receivable (in years)	2 years
Paycheck protection program loans (COVID-19 program) | Loans made after June 5, 2020
Interest Recognized
Term of receivable (in years)	5 years
Domestic | Residential: first lien
Interest Recognized
Total troubled debt restructuring	$ 2,254,000		4,078,000
Domestic | Residential Junior Lien
Interest Recognized
Total troubled debt restructuring	105,000		521,000
Consumer | Domestic
Interest Recognized
Total troubled debt restructuring	878,000		989,000
Foreign. | Foreign
Interest Recognized
Total troubled debt restructuring	$ 16,000		$ 233,000

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Allowance for Credit Losses (Aging By Loan Class) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	$ 8,642,000	$ 8,238,000	$ 59,705,000
Loans	7,209,151,000	7,541,754,000
Current
Financing receivable recorded investment
Loans	7,171,688,000	7,503,496,000
Total Past Due
Financing receivable recorded investment
Loans	37,463,000	38,258,000
30 to 59 Days
Financing receivable recorded investment
Loans	25,836,000	9,307,000
60 to 89 Days
Financing receivable recorded investment
Loans	2,456,000	3,606,000
90 Days or Greater
Financing receivable recorded investment
Loans	9,171,000	25,345,000
Commercial, financial and agricultural
Financing receivable recorded investment
Loans	4,497,444,000	4,516,288,000
Commercial, financial and agricultural | Domestic | Commercial.
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	577,000	318,000
Loans	1,501,852,000	1,785,936,000
Commercial, financial and agricultural | Domestic | Commercial. | Current
Financing receivable recorded investment
Loans	1,498,438,000	1,782,333,000
Commercial, financial and agricultural | Domestic | Commercial. | Total Past Due
Financing receivable recorded investment
Loans	3,414,000	3,603,000
Commercial, financial and agricultural | Domestic | Commercial. | 30 to 59 Days
Financing receivable recorded investment
Loans	2,534,000	1,931,000
Commercial, financial and agricultural | Domestic | Commercial. | 60 to 89 Days
Financing receivable recorded investment
Loans	303,000	1,109,000
Commercial, financial and agricultural | Domestic | Commercial. | 90 Days or Greater
Financing receivable recorded investment
Loans	577,000	563,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	307,000	186,000
Loans	2,711,056,000	2,289,308,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Current
Financing receivable recorded investment
Loans	2,692,076,000	2,286,468,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Total Past Due
Financing receivable recorded investment
Loans	18,980,000	2,840,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 30 to 59 Days
Financing receivable recorded investment
Loans	18,164,000	2,435,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 60 to 89 Days
Financing receivable recorded investment
Loans	172,000	219,000
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | 90 Days or Greater
Financing receivable recorded investment
Loans	644,000	186,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily
Financing receivable recorded investment
Loans	284,536,000	441,044,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Current
Financing receivable recorded investment
Loans	284,536,000	440,918,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Total Past Due
Financing receivable recorded investment
Loans		126,000
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | 30 to 59 Days
Financing receivable recorded investment
Loans		126,000
Obligations of states and political subdivisions
Financing receivable recorded investment
Loans	1,668,113,000	1,846,757,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	188,000
Loans	1,668,113,000	1,846,757,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Current
Financing receivable recorded investment
Loans	1,667,092,000	1,828,257,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Total Past Due
Financing receivable recorded investment
Loans	1,021,000	18,500,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | 30 to 59 Days
Financing receivable recorded investment
Loans	499,000	1,059,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | 60 to 89 Days
Financing receivable recorded investment
Loans	334,000	854,000
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | 90 Days or Greater
Financing receivable recorded investment
Loans	188,000	16,587,000
Real estate - mortgage
Financing receivable recorded investment
Loans	867,831,000	999,144,000
Real estate - mortgage | Domestic | Residential: first lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	4,937,000	5,890,000
Loans	403,658,000	405,119,000
Real estate - mortgage | Domestic | Residential: first lien | Current
Financing receivable recorded investment
Loans	394,975,000	395,629,000
Real estate - mortgage | Domestic | Residential: first lien | Total Past Due
Financing receivable recorded investment
Loans	8,683,000	9,490,000
Real estate - mortgage | Domestic | Residential: first lien | 30 to 59 Days
Financing receivable recorded investment
Loans	2,342,000	2,399,000
Real estate - mortgage | Domestic | Residential: first lien | 60 to 89 Days
Financing receivable recorded investment
Loans	1,212,000	926,000
Real estate - mortgage | Domestic | Residential: first lien | 90 Days or Greater
Financing receivable recorded investment
Loans	5,129,000	6,165,000
Real estate - mortgage | Domestic | Residential Junior Lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	1,055,000	1,197,000
Loans	464,173,000	594,025,000
Real estate - mortgage | Domestic | Residential Junior Lien | Current
Financing receivable recorded investment
Loans	462,256,000	592,020,000
Real estate - mortgage | Domestic | Residential Junior Lien | Total Past Due
Financing receivable recorded investment
Loans	1,917,000	2,005,000
Real estate - mortgage | Domestic | Residential Junior Lien | 30 to 59 Days
Financing receivable recorded investment
Loans	747,000	561,000
Real estate - mortgage | Domestic | Residential Junior Lien | 60 to 89 Days
Financing receivable recorded investment
Loans	115,000	247,000
Real estate - mortgage | Domestic | Residential Junior Lien | 90 Days or Greater
Financing receivable recorded investment
Loans	1,055,000	1,197,000
Consumer
Financing receivable recorded investment
Loans	40,966,000	40,595,000
Consumer | Domestic
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	4,000	79,000
Loans	40,966,000	40,595,000
Consumer | Domestic | Current
Financing receivable recorded investment
Loans	40,643,000	40,127,000
Consumer | Domestic | Total Past Due
Financing receivable recorded investment
Loans	323,000	468,000
Consumer | Domestic | 30 to 59 Days
Financing receivable recorded investment
Loans	231,000	318,000
Consumer | Domestic | 60 to 89 Days
Financing receivable recorded investment
Loans	88,000	71,000
Consumer | Domestic | 90 Days or Greater
Financing receivable recorded investment
Loans	4,000	79,000
Foreign.
Financing receivable recorded investment
Loans	134,797,000	138,970,000
Foreign. | Foreign
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	1,574,000	568,000
Loans	134,797,000	138,970,000
Foreign. | Foreign | Current
Financing receivable recorded investment
Loans	131,672,000	137,744,000
Foreign. | Foreign | Total Past Due
Financing receivable recorded investment
Loans	3,125,000	1,226,000
Foreign. | Foreign | 30 to 59 Days
Financing receivable recorded investment
Loans	1,319,000	478,000
Foreign. | Foreign | 60 to 89 Days
Financing receivable recorded investment
Loans	232,000	180,000
Foreign. | Foreign | 90 Days or Greater
Financing receivable recorded investment
Loans	$ 1,574,000	$ 568,000

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Allowance for Credit Losses (Portfolio Credit Quality) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loan portfolio by credit quality indicator
2021	$ 3,641,975
2020	1,540,327	$ 3,601,680
2019	885,554	1,627,511
2018	616,037	1,087,031
2017	241,896	556,923
2016/Prior	283,362	327,336
Prior		341,273
Total loans	7,209,151	7,541,754
Commercial, financial and agricultural
Loan portfolio by credit quality indicator
Total loans	4,497,444	4,516,288
Commercial, financial and agricultural | Domestic | Commercial.
Loan portfolio by credit quality indicator
2021	1,154,047
2020	168,461	1,288,332
2019	78,434	241,724
2018	58,577	146,051
2017	37,178	85,596
2016/Prior	5,155	14,216
Prior		10,017
Total loans	1,501,852	1,785,936
Commercial, financial and agricultural | Domestic | Commercial. | Pass
Loan portfolio by credit quality indicator
2021	1,041,763
2020	167,691	1,168,671
2019	77,579	240,869
2018	58,439	145,670
2017	37,104	85,434
2016/Prior	5,144	13,901
Prior		10,000
Total loans	1,387,720	1,664,545
Commercial, financial and agricultural | Domestic | Commercial. | Special Review
Loan portfolio by credit quality indicator
2021	74,559
2020	497	75,638
2019	139
2018	81
Total loans	75,276	75,638
Commercial, financial and agricultural | Domestic | Commercial. | Watch List - Pass
Loan portfolio by credit quality indicator
2021	33,920
2020		39,886
2019		11
2017		3
2016/Prior	10
Prior		17
Total loans	33,930	39,917
Commercial, financial and agricultural | Domestic | Commercial. | Watch List - Substandard
Loan portfolio by credit quality indicator
2021	3,581
2020	273	3,360
2019	716	683
2018	57	289
2016/Prior	1	315
Total loans	4,628	4,647
Commercial, financial and agricultural | Domestic | Commercial. | Watch List - Doubtful
Loan portfolio by credit quality indicator
2021	224
2020		777
2019		161
2018		92
2017	74	159
Total loans	298	1,189
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial
Loan portfolio by credit quality indicator
2021	1,021,054
2020	780,449	1,002,557
2019	292,569	380,123
2018	420,801	391,303
2017	98,606	192,165
2016/Prior	97,577	206,193
Prior		116,967
Total loans	2,711,056	2,289,308
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Pass
Loan portfolio by credit quality indicator
2021	1,001,335
2020	680,777	884,070
2019	288,333	373,993
2018	417,353	386,268
2017	96,096	189,639
2016/Prior	97,119	202,500
Prior		116,729
Total loans	2,581,013	2,153,199
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Special Review
Loan portfolio by credit quality indicator
2021	929
2020	1,292	3,041
2018	3,448	4,758
2017	61	177
2016/Prior		3,218
Total loans	5,730	11,194
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Watch List - Pass
Loan portfolio by credit quality indicator
2021	18,790
2020	44,059	61,637
2019		942
2018		277
2017	94	80
2016/Prior	1
Total loans	62,944	62,936
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Watch List - Substandard
Loan portfolio by credit quality indicator
2020	54,097	53,809
2019	3,899	4,986
2017	2,355	2,269
2016/Prior	456	475
Prior		1
Total loans	60,807	61,540
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	224
2019	337	202
2016/Prior	1
Prior		237
Total loans	562	439
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily
Loan portfolio by credit quality indicator
2021	133,152
2020	40,897	74,711
2019	78,609	208,356
2018	10,632	82,818
2017	14,217	64,110
2016/Prior	7,029	6,801
Prior		4,248
Total loans	284,536	441,044
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Pass
Loan portfolio by credit quality indicator
2021	133,152
2020	40,766	74,577
2019	78,609	208,356
2018	10,632	82,818
2017	14,217	64,110
2016/Prior	7,029	6,801
Prior		4,248
Total loans	284,405	440,910
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	131	134
2019
2018
2017
2016/Prior
Prior
Total loans	131	134
Obligations of states and political subdivisions
Loan portfolio by credit quality indicator
Total loans	1,668,113	1,846,757
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development
Loan portfolio by credit quality indicator
2021	967,431
2020	335,593	833,796
2019	308,884	600,602
2018	37,124	320,308
2017	16,642	78,174
2016/Prior	2,439	10,534
Prior		3,343
Total loans	1,668,113	1,846,757
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Pass
Loan portfolio by credit quality indicator
2021	966,946
2020	312,389	773,165
2019	308,673	576,707
2018	37,124	320,308
2017	16,642	78,174
2016/Prior	2,439	10,534
Prior		3,343
Total loans	1,644,213	1,762,231
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Special Review
Loan portfolio by credit quality indicator
2020		20,828
2019	211	21,650
2018
2017
2016/Prior
Prior
Total loans	211	42,478
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Watch List - Pass
Loan portfolio by credit quality indicator
2020	23,100	23,101
2019		1,451
Total loans	23,100	24,552
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development | Watch List - Doubtful
Loan portfolio by credit quality indicator
2021	485
2020	104	16,702
2019		794
Total loans	589	17,496
Real estate - mortgage
Loan portfolio by credit quality indicator
Total loans	867,831	999,144
Real estate - mortgage | Domestic | Residential: first lien
Loan portfolio by credit quality indicator
2021	128,798
2020	52,812	81,090
2019	57,352	62,179
2018	49,259	72,430
2017	29,599	54,593
2016/Prior	85,838	29,299
Prior		105,528
Total loans	403,658	405,119
Real estate - mortgage | Domestic | Residential: first lien | Pass
Loan portfolio by credit quality indicator
2021	128,742
2020	52,725	81,004
2019	57,249	62,165
2018	49,259	72,299
2017	29,477	54,593
2016/Prior	85,838	29,250
Prior		105,463
Total loans	403,290	404,774
Real estate - mortgage | Domestic | Residential: first lien | Watch List - Pass
Loan portfolio by credit quality indicator
2019		14
2018		131
Total loans		145
Real estate - mortgage | Domestic | Residential: first lien | Watch List - Substandard
Loan portfolio by credit quality indicator
2021	56
2019	103
2017	122
2016/Prior		49
Total loans	281	49
Real estate - mortgage | Domestic | Residential: first lien | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	87	86
Prior		65
Total loans	87	151
Real estate - mortgage | Domestic | Residential Junior Lien
Loan portfolio by credit quality indicator
2021	130,629
2020	123,062	197,048
2019	59,113	108,276
2018	30,603	61,674
2017	40,855	75,868
2016/Prior	79,911	56,705
Prior		94,454
Total loans	464,173	594,025
Real estate - mortgage | Domestic | Residential Junior Lien | Pass
Loan portfolio by credit quality indicator
2021	130,629
2020	123,062	196,308
2019	59,113	108,276
2018	30,603	61,636
2017	40,855	75,056
2016/Prior	79,911	56,705
Prior		94,454
Total loans	464,173	592,435
Real estate - mortgage | Domestic | Residential Junior Lien | Special Review
Loan portfolio by credit quality indicator
2020		740
2019
2018
2017		812
2016/Prior
Prior
Total loans		1,552
Real estate - mortgage | Domestic | Residential Junior Lien | Watch List - Doubtful
Loan portfolio by credit quality indicator
2018		38
Total loans		38
Consumer
Loan portfolio by credit quality indicator
Total loans	40,966	40,595
Consumer | Domestic
Loan portfolio by credit quality indicator
2021	32,053
2020	5,693	30,910
2019	1,370	7,159
2018	189	875
2017	9	225
2016/Prior	1,652	55
Prior		1,371
Total loans	40,966	40,595
Consumer | Domestic | Pass
Loan portfolio by credit quality indicator
2021	32,053
2020	5,693	30,910
2019	1,370	7,159
2018	189	875
2017	9	225
2016/Prior	1,652	55
Prior		1,371
Total loans	40,966	40,595
Foreign.
Loan portfolio by credit quality indicator
Total loans	134,797	138,970
Foreign. | Foreign
Loan portfolio by credit quality indicator
2021	74,811
2020	33,360	93,236
2019	9,223	19,092
2018	8,852	11,572
2017	4,790	6,192
2016/Prior	3,761	3,533
Prior		5,345
Total loans	134,797	138,970
Foreign. | Foreign | Pass
Loan portfolio by credit quality indicator
2021	74,811
2020	33,360	93,236
2019	9,223	19,092
2018	8,852	11,572
2017	4,790	6,192
2016/Prior	3,761	3,533
Prior		5,345
Total loans	$ 134,797	$ 138,970

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Bank Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Bank premises and equipment
Less: accumulated depreciation	$ (542,159)	$ (526,939)
Bank premises and equipment, net	447,082	479,878
Bank buildings and improvements [Member]
Bank premises and equipment
Bank premises and equipment, gross	$ 573,276	577,656
Bank buildings and improvements [Member] | Minimum
Bank premises and equipment
Estimated useful lives	5 years
Bank buildings and improvements [Member] | Maximum [Member]
Bank premises and equipment
Estimated useful lives	39 years
Furniture equipment and Vehicles [Member]
Bank premises and equipment
Bank premises and equipment, gross	$ 302,847	311,313
Furniture equipment and Vehicles [Member] | Minimum
Bank premises and equipment
Estimated useful lives	1 year
Furniture equipment and Vehicles [Member] | Maximum [Member]
Bank premises and equipment
Estimated useful lives	20 years
Land [Member]
Bank premises and equipment
Bank premises and equipment, gross	$ 113,118	$ 117,848

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Goodwill and Other Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Identified intangible assets
Carrying Amount	$ 60,697,000	$ 60,697,000
Accumulated Amortization	60,697,000	60,697,000
Amortization expense	0	0	$ 0
Changes in carrying amount of goodwill	0	0
Core Deposits [Member]
Identified intangible assets
Carrying Amount	58,675,000	58,675,000
Accumulated Amortization	58,675,000	58,675,000
Contractual Rights [Member]
Identified intangible assets
Carrying Amount	2,022,000	2,022,000
Accumulated Amortization	$ 2,022,000	$ 2,022,000

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Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Demand non-interest bearing
Domestic	$ 4,805,999	$ 3,781,277
Foreign	1,032,527	934,537
Total demand non-interest bearing	5,838,526	4,715,814
Savings and interest bearing demand
Domestic	3,555,279	2,919,314
Foreign	1,035,269	933,191
Total savings and interest bearing demand	4,590,548	3,852,505
$100,000 or more
Time, certificate of deposit	1,660,917
Less than $100,000
Domestic	286,499	291,473
Foreign	241,387	241,989
Total time, certificates of deposit	2,188,803	2,153,541
Total deposits	12,617,877	10,721,860
Savings and interest bearing demand
Domestic	3,268	5,098	$ 13,462
Foreign	842	1,260	2,917
Total savings and interest bearing demand	4,110	6,358	16,379
$100,000 or more
Domestic	6,652	8,827	7,804
Foreign	3,452	7,536	9,407
Less than $100,000
Domestic	984	1,781	2,232
Foreign	567	1,086	1,527
Total time, certificates of deposit	11,655	19,230	20,970
Total interest expense on deposits	15,765	25,588	$ 37,349
Domestic
$100,000 or more
Time, certificate of deposit	794,757	797,692
Foreign
$100,000 or more
Time, certificate of deposit	$ 866,160	$ 822,387

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Deposits (Scheduled Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Scheduled maturities of time deposits
2022	$ 2,071,684
2023	86,480
2024	20,788
2025	9,608
2026	231
Thereafter	12
Total time, certificates of deposit	2,188,803	$ 2,153,541
Time Deposits 250,000 or exceed	1,125,318	$ 1,085,404
Scheduled maturities of time deposits in amounts of $100,000 or more
Due within 3 months or less	677,946
Due after 3 months and within 6 months	407,731
Due after 6 months and within 12 months	506,392
Due after 12 months	68,848
Total	$ 1,660,917

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Securities Sold Under Repurchase Agreements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Collateral Securities and Repurchase Borrowing agreements
Average outstanding amount	$ 411,611,000	$ 335,392,000
Maximum amount outstanding at any month end	443,980,000	428,148,000
Collateralized Securities, Book Value of Securities Sold	511,947,000	517,704,000
Collateralized securities, Fair Value of Securities Sold	503,255,000	518,805,000
Repurchase Borrowing, Balance of Liability	$ 439,672,000	$ 428,148,000
Repurchase Borrowing, Weighted Average Interest Rate (as a percent)	0.17%	0.14%
Maturity Overnight [Member]
Collateral Securities and Repurchase Borrowing agreements
Collateralized Securities, Book Value of Securities Sold	$ 500,495,000	$ 506,020,000
Collateralized securities, Fair Value of Securities Sold	492,026,000	507,164,000
Repurchase Borrowing, Balance of Liability	$ 428,235,000	$ 416,757,000
Repurchase Borrowing, Weighted Average Interest Rate (as a percent)	0.16%	0.13%
Maturity over 90 days [Member]
Collateral Securities and Repurchase Borrowing agreements
Collateralized Securities, Book Value of Securities Sold	$ 11,452,000	$ 11,684,000
Collateralized securities, Fair Value of Securities Sold	11,229,000	11,641,000
Repurchase Borrowing, Balance of Liability	$ 11,437,000	$ 11,391,000
Repurchase Borrowing, Weighted Average Interest Rate (as a percent)	0.48%	0.43%

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Other Borrowed Funds (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($)
Federal Home Loan Bank advances
Other borrowed funds	$ 436,138,000	$ 436,327,000
Short-term Debt [Member]
Federal Home Loan Bank advances
Average daily balance		$ 110,776,000
Average rate (as a percent)		1.19%
Maximum amount outstanding at any month end		$ 292,000,000
Long-term Debt [Member]
Federal Home Loan Bank advances
Other borrowed funds	$ 436,138,000	$ 436,327,000
Rate on balance outstanding at year end (as a percent)	1.73%	1.73%
Average daily balance	$ 436,225,000	$ 436,411,000
Average rate (as a percent)	1.71%	1.71%
Maximum amount outstanding at any month end	$ 436,311,000	$ 436,495,000
Long-term Debt [Member] | Federal Home Loan Bank advances maturing July 2028
Federal Home Loan Bank advances
Other borrowed funds	75,000,000
Long-term Debt [Member] | Federal Home Loan Bank advances maturing March 2033
Federal Home Loan Bank advances
Other borrowed funds	100,000,000
Long-term Debt [Member] | Federal Home Loan Bank advances maturing August 2033
Federal Home Loan Bank advances
Other borrowed funds	$ 250,000,000
Long-term Debt [Member] | Federal Home Loan Bank amortizing advances
Federal Home Loan Bank advances
Number of amortizing advances | loan	2
Amortizing in 2022	$ 194,000
Amortizing in 2023	199,000
Amortizing in 2024	204,000
Amortizing in 2025	210,000
Amortizing in 2026	2,215,000
Long-term Debt [Member] | Federal Home Loan Bank advances maturing December 2033
Federal Home Loan Bank advances
Other borrowed funds	3,033,000
Long-term Debt [Member] | Federal Home Loan Bank advances maturing November 2033
Federal Home Loan Bank advances
Other borrowed funds	$ 8,104,000

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Junior Subordinated Deferrable Interest Debentures (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)
Junior subordinated interest deferrable debentures, major types of business trusts
Number of statutory business trusts issuing trust preferred securities | item	5
Junior subordinated deferrable interest debentures | $	$ 134,642,000	$ 134,642,000
Maximum number of consecutive quarterly period available for deferral of interest payment on Trusts VIII, IX, X, XI and XII | item	20
Percentage of capital securities issued by trust qualifying as Tier I capital, maximum	25.00%
Percentage of capital securities issued by trust qualifying as Tier II capital, minimum	25.00%
Capital securities issued by the trust, qualifying as Tier I capital | $	$ 134,642,000	$ 134,642,000

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Junior Subordinated Deferrable Interest Debentures (Key Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 134,642,000	$ 134,642,000
Trust VIII
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,774,000
Interest rate (as a percent)	3.17%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	3.05%
Trust IX
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 41,238,000
Interest rate (as a percent)	1.75%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust X
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 21,021,000
Interest rate (as a percent)	1.78%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.65%
Trust XI
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,990,000
Interest rate (as a percent)	1.75%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust XII
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 20,619,000
Interest rate (as a percent)	1.62%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.45%

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Earnings per Share ("EPS") (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic EPS
Net income available to common shareholders	$ 253,922	$ 167,319	$ 205,104
Shares (Denominator)	63,352,737	63,725,819	65,476,606
Per Share Amount	$ 4.01	$ 2.63	$ 3.13
Diluted EPS
Net income available to common shareholders	$ 253,922	$ 167,319	$ 205,104
Potential dilutive common shares and warrants	133,629	127,316	209,078
Shares (Denominator)	63,486,366	63,853,135	65,685,684
Per Share Amount (in dollars per share)	$ 4.00	$ 2.62	$ 3.12

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Employees' Profit Sharing Plan (Details) - Deferred Profit Sharing [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employees' profit sharing plan
Minimum period of continuous employment to be fully vested	1 year
Profit sharing costs	$ 3,550	$ 4,000	$ 4,200

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International Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans
Loans	$ 7,209,151	$ 7,541,754
Less allowance for credit losses	(110,374)	(109,059)	$ (60,278)	$ (61,384)
Net loans	7,098,777	7,432,695
Accrued interest receivable	30,593	37,881
International Banking Services [Member]
Loans
Accrued interest receivable	449	605
Outstanding standby and commercial letters of credit	111,955
Revenues	4,090	4,676	$ 5,445
International Banking Services [Member] | Foreign
Loans
Loans	134,797	138,970
Less allowance for credit losses	(762)	(753)
Net loans	134,035	138,217
International Banking Services [Member] | Foreign | Commercial
Loans
Loans	91,861	90,177
International Banking Services [Member] | Foreign | Others
Loans
Loans	$ 42,936	$ 48,793

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Income Taxes (Current and Deferred Portions of Net Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
U.S.	$ 59,591	$ 43,794	$ 48,559
State	5,272	3,709	2,944
Foreign		58	38
Total current taxes	64,863	47,561	51,541
Deferred
U.S.	3,794	(2,733)	2,979
State	(252)	(389)	330
Total deferred taxes	3,542	(3,122)	3,309
Total income taxes	$ 68,405	$ 44,439	$ 54,850

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Income Taxes (Income Tax Expense Differences from the Amount Computed by Applying the U.S. Federal Income Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. Federal income tax rate (as a percent)	21.00%	21.00%	21.00%
Reasons for the difference of income tax expense
Computed expected tax expense	$ 68,011	$ 45,218	$ 55,086
Change in taxes resulting from:
Tax-exempt interest income	(2,970)	(2,709)	(2,550)
State tax, net of federal income taxes and tax credit and refunds	3,966	2,622	2,587
Other investment income	(1,753)	(2,205)	(1,480)
Net investment expense, low income housing investment	203	1,990	623
Other	948	(477)	584
Total income taxes	$ 68,405	$ 44,439	$ 54,850

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Income Taxes (Deferred Tax Assets and Deferred Tax Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Loans receivable, principally due to the allowance for probable loan losses	$ 22,773	$ 21,921
Other real estate owned	1,227	1,183
Accrued expenses	81	81
Net unrealized losses on available for sale investment securities	9,062
Other	4,842	5,649
Total deferred tax assets	37,985	28,834
Deferred tax liabilities:
Bank premises and equipment, principally due to differences on depreciation	(12,163)	(12,350)
Net unrealized gains on available for sale investment securities		(5,679)
Impairment charges on available-for-securities	(19)	(19)
Identified intangible assets and goodwill	(13,966)	(13,807)
Other	(24,235)	(20,551)
Total deferred tax liabilities	50,383	52,406
Net deferred tax liability	$ (12,398)	$ (23,572)
U.S. Federal income tax rate (as a percent)	21.00%	21.00%	21.00%

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Stock Options (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 05, 2012
Employee Stock Option [Member]
Stock option details
Shares available for future grants	30,678			800,000
Maximum exercisable period for options granted	10 years
Black-Scholes-Merton option valuation model assumptions
Expected Life (Years)	7 years	7 years
Dividend yield (as a percent)	3.18%	6.04%
Interest rate (as a percent)	1.02%	0.74%
Volatility (as a percent)	37.84%	29.04%
Number of options granted (in shares)	18,000
Stock option activity
Options outstanding at the beginning of the period (in shares)	651,127
Plus: Options granted (in shares)	18,000
Less:
Exercise of stock options (in shares)	110,000
Options forfeited (in shares)	38,576
Options outstanding at the end of the period (in shares)	520,551	651,127
Options fully vested and exercisable at the end of the period (in shares)	290,914
Stock Options, Weighted average exercise price
Options outstanding at the beginning, weighted average exercise price (in dollars per share)	$ 27.24
Plus: Options granted, weighted average exercise price (in dollars per share)	37.76
Less:
Options exercised, weighted average exercise price (in dollars per share)	21.94
Options forfeited, weighted average exercise price (in dollars per share)	33.19
Options outstanding at the end, weighted average exercise price (in dollars per share)	28.28	$ 27.24
Options fully vested and exercisable at the end, weighted average exercise price (in dollars per share)	$ 23.29
Stock Options, Weighted average remaining contractual term (years)
Options outstanding at the end, weighted average remaining contractual term (years)	4 years 5 months 26 days
Options fully vested and exercisable at the end, weighted average remaining contractual term (years)	2 years 8 months 15 days
Stock Options, Aggregate intrinsic value
Options outstanding at the end, aggregate intrinsic value	$ 7,344,000
Options fully vested and exercisable at the end, aggregate intrinsic value	5,557,000
Stock-based compensation expense	506,000	$ 743,000	$ 980,000
Stock-based compensation cost, unrecognized, related to non-vested options	$ 907,000
Stock-based compensation cost, unrecognized, related to non-vested options, weighted-average period of recognition	1 year 7 months 6 days
Other information pertaining to option activity
Weighted average grant date fair value of stock options granted (in dollars per share)	$ 10.20	$ 2.46	$ 7.38
Total fair value of stock options vested	$ 1,308,000	$ 1,218,000	$ 1,333,000
Total intrinsic value of stock options exercised	$ 2,536,000	$ 356,000	$ 2,373,000
Incentive Stock Options to 10 Percent Shareholders [Member]
Stock option details
Maximum exercisable period for options granted	5 years

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Transactions with Related Parties (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Aggregate amount receivable from related parties	$ 18,881,000	$ 30,398,000

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Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Maximum [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Credit risk commitment, maximum expiration date	1 year
Commitments to Extend Credit [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Outstanding amount of financial instruments whose, contract amounts represent credit risks	$ 2,679,462,000
Credit card lines [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Outstanding amount of financial instruments whose, contract amounts represent credit risks	13,702,000
Standby Letters of Credit [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Outstanding amount of financial instruments whose, contract amounts represent credit risks	111,955,000
Guarantee obligations, maximum exposure	111,955,000
Commercial Letters of Credit [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Outstanding amount of financial instruments whose, contract amounts represent credit risks	594,000
Unsecured Letters of Credit [Member]
Financial amounts of instruments, whose contract amounts represent credit risks
Unsecured letters of credit	$ 29,254,000	$ 39,487,000

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Capital Requirements (Details)	12 Months Ended
	Dec. 31, 2021 USD ($)
Dividend payable by subsidiaries, maximum	$ 1,066,000,000

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Capital Requirements (Capital Amounts and Ratios) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Parent Company
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 2,057,928	$ 1,874,641
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	20.47%	19.05%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 2,284,579	$ 2,105,360
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	22.73	21.40
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 2,170,682	$ 1,992,403
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	21.59	20.25
Tier 1 Capital (to Average Assets), Actual Amount	$ 2,170,682	$ 1,992,403
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	13.94	14.92
Parent Company | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 703,710	$ 688,678
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 1,055,565	$ 1,033,017
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 854,505	$ 836,252
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 622,671	$ 534,228
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
International Bank of Commerce Laredo
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 1,287,687	$ 1,295,437
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.74%	18.19%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 1,367,487	$ 1,380,685
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	20.97	19.39
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 1,287,687	$ 1,295,437
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.74	18.19
Tier 1 Capital (to Average Assets), Actual Amount	$ 1,287,687	$ 1,295,437
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	11.14	13.11
International Bank of Commerce Laredo | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 456,544	$ 498,492
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 423,934	$ 462,885
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 684,816	$ 747,737
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 652,206	$ 712,131
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00	10.00
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 554,375	$ 605,311
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 521,764	$ 569,705
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00	8.00
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 462,225	$ 395,289
Tier 1 Capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 577,781	$ 494,112
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
Tier 1 Capital (to Average Assets), To Be well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00	5.00
International Bank of Commerce Brownsville
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 315,957	$ 189,575
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.80%	22.18%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 334,495	$ 200,269
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	20.96	23.43
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 315,957	$ 189,575
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.80	22.18
Tier 1 Capital (to Average Assets), Actual Amount	$ 315,957	$ 189,575
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	20.17	14.55
International Bank of Commerce Brownsville | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 111,690	$ 59,843
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 103,712	$ 55,569
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 167,535	$ 89,765
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 159,557	$ 85,490
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00	10.00
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 135,623	$ 72,667
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 127,645	$ 68,392
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00	8.00
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 62,663	$ 52,101
Tier 1 Capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 78,329	$ 65,127
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
Tier 1 Capital (to Average Assets), To Be well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00	5.00
International Bank Of Commerce Oklahoma
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 221,567	$ 207,339
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	18.59%	17.45%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 232,454	$ 218,657
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.50	18.41
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 221,567	$ 207,339
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	18.59	17.45
Tier 1 Capital (to Average Assets), Actual Amount	$ 221,567	$ 207,339
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	11.49	12.98
International Bank Of Commerce Oklahoma | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 83,452	$ 83,150
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 77,491	$ 77,211
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 125,178	$ 124,725
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 119,217	$ 118,786
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00	10.00
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 101,334	$ 100,968
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 95,374	$ 95,029
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00	8.00
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 77,164	$ 63,879
Tier 1 Capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 96,455	$ 79,848
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
Tier 1 Capital (to Average Assets), To Be well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00	5.00
Commerce Bank
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 102,375	$ 93,426
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	46.06%	35.64%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 104,996
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	47.24	36.72
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 102,375	$ 96,240
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	46.06	35.64
Tier 1 Capital (to Average Assets), Actual Amount	$ 102,375	$ 93,426
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	16.10	16.69
Commerce Bank | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 15,559	$ 18,347
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 14,448	$ 17,037
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 23,339	$ 27,521
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 22,227	$ 26,210
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00	10.00
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 18,893	$ 22,279
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 17,782	$ 20,968
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00	8.00
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 25,441	$ 22,394
Tier 1 Capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 31,801	$ 27,993
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
Tier 1 Capital (to Average Assets), To Be well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00	5.00
International Bank of Commerce Zapata
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 75,303	$ 71,369
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	42.25%	34.51%
Total Capital (to Risk Weighted Assets), Actual Amount	$ 77,354	$ 73,510
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	43.40	35.55
Tier 1 Capital (to Risk Weighted Assets), Actual Amount	$ 75,303	$ 71,369
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	42.25	34.51
Tier 1 Capital (to Average Assets), Actual Amount	$ 75,303	$ 71,369
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	16.15	16.52
International Bank of Commerce Zapata | Minimum
Capital Requirements
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 12,475	$ 14,476
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 11,584	$ 13,442
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	7.00%	7.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 18,713	$ 21,714
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 17,822	$ 20,680
Total Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	10.500	10.500
Total Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00	10.00
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Amount	$ 15,149	$ 17,578
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 14,258	$ 16,544
Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Ratio (as a percent)	8.500	8.500
Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00	8.00
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Amount	$ 18,651	$ 17,277
Tier 1 Capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 23,314	$ 21,596
Tier 1 Capital (to Average Assets), For Capital Adequacy Purposes Ratio (as a percent)	4.00	4.00
Tier 1 Capital (to Average Assets), To Be well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00	5.00

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Fair Value (Fair Value By Level) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Assets:
Available for sale debt securities	$ 4,213,920,000	$ 3,080,768,000
Equity Securities	6,079,000	6,202,000
Estimate of Fair Value Measurement [Member] | Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,169,363,000	3,029,954,000
Estimate of Fair Value Measurement [Member] | States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	44,557,000	50,814,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Equity Securities	6,079,000	6,202,000
Marketable Securities	6,079,000	6,202,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Marketable Securities	4,213,920,000	3,080,768,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,169,363,000	3,029,954,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	44,557,000	50,814,000
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Assets:
Equity Securities	6,079,000	6,202,000
Marketable Securities	4,219,999,000	3,086,970,000
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,169,363,000	3,029,954,000
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	$ 44,557,000	$ 50,814,000

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Fair Value (Fair Value Measurement and Assumptions) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Non-financial assets:
Other real estate owned	$ 35,332,000	$ 60,487,000
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Doubtful and Impaired commercial collateral dependent loans	993,000	18,361,000
Impaired commercial collateral dependent receivables appraisals to determine fair value within immediately preceding twelve months	0	16,587,000
Impaired collateral dependent commercial loans with internal evaluation completed within last twelve months	896,000	1,283,000
Charges to allowance for probable loan losses in connection with other real estate owned	2,000	22,000	$ 9,611,000
Adjustment to fair value in connection with other real estate owned	2,655,000	1,539,000	$ 322,000
Fair Value, Measurements, Nonrecurring [Member]
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Change in net provision, impaired loans	209,000	(86,000)
Change in net provision, other real estate owned	2,655,000	1,539,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Watch-List doubtful loans		393,000
Non-financial assets:
Other real estate owned	18,095,000	6,241,000
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Doubtful and Impaired commercial collateral dependent loans	55,000
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member]
Assets:
Watch-List doubtful loans		393,000
Non-financial assets:
Other real estate owned	18,095,000	$ 6,241,000
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Doubtful and Impaired commercial collateral dependent loans	$ 55,000

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Fair Value (Other Assumptions) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Deposits
Carrying amount of time deposits	$ 2,188,803,000	$ 2,153,541,000
Fair Value, Inputs, Level 3 [Member]
Loans
Carrying amount of fixed rate performing loans	1,363,313,000	1,812,413,000
Estimated fair value of fixed rate performing loans	1,323,223,000	1,747,257,000
Deposits
Carrying amount of time deposits	2,188,803,000	2,153,541,000
Estimated fair value of time deposits	2,186,547,000	2,148,976,000
Fair Value, Inputs, Level 2 [Member]
Other borrowed funds
Carrying amount of the long-term FHLB borrowings	436,138,000	436,372,000
Estimated fair value of long-term FHLB borrowings	$ 455,187,000	$ 480,475,000

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Condition (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Other investments	$ 296,882,000	$ 254,413,000
Notes loans	7,098,777,000	7,432,695,000
Goodwill	282,532,000	282,532,000
Other assets	160,511,000	162,079,000
Total assets	16,046,236,000	14,029,467,000
Liabilities:
Junior subordinated deferrable interest debentures	134,642,000	134,642,000
Other liabilities	109,426,000	130,492,000
Total liabilities	13,737,755,000	11,851,469,000
Shareholders' equity:
Common shares	96,351,000	96,241,000
Surplus	152,144,000	149,334,000
Retained earnings	2,470,710,000	2,289,626,000
Accumulated other comprehensive (loss) income	(31,980,000)	20,825,000
Total shareholders' equity before treasury stock	2,687,225,000	2,556,026,000
Less cost of shares in treasury	(378,744,000)	(378,028,000)
Total shareholders' equity	2,308,481,000	2,177,998,000	$ 2,118,053,000	$ 1,939,582,000
Total liabilities and shareholders' equity	16,046,236,000	14,029,467,000
Parent Company | Reportable Legal Entities
ASSETS
Cash	62,564,000	66,252,000
Other investments	90,555,000	77,661,000
Notes loans	10,401,000	11,950,000
Investment in subsidiaries	2,281,597,000	2,167,516,000
Goodwill	3,365,000	3,365,000
Other assets	1,644,000
Total assets	2,450,126,000	2,326,744,000
Liabilities:
Junior subordinated deferrable interest debentures	134,642,000	134,642,000
Due to IBC Trading	21,000	21,000
Other liabilities	6,982,000	14,083,000
Total liabilities	141,645,000	148,746,000
Shareholders' equity:
Common shares	96,351,000	96,241,000
Surplus	152,144,000	149,334,000
Retained earnings	2,470,710,000	2,289,626,000
Accumulated other comprehensive (loss) income	(31,980,000)	20,825,000
Total shareholders' equity before treasury stock	2,687,225,000	2,556,026,000
Less cost of shares in treasury	(378,744,000)	(378,028,000)
Total shareholders' equity	2,308,481,000	2,177,998,000
Total liabilities and shareholders' equity	$ 2,450,126,000	$ 2,326,744,000

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Expenses:
Interest expense (Debentures)	$ 2,791	$ 3,832	$ 6,435
Provision for credit loss	7,955	45,379	18,843
Income before federal income taxes and equity in undistributed net income of subsidiaries	322,327	211,758	259,954
Income tax expense (benefit)	68,405	44,439	54,850
Net income	253,922	167,319	205,104
Parent Company | Reportable Legal Entities
Income:
Dividends from subsidiaries	80,882	130,950	127,750
Interest income on notes receivable	1,139	357	922
Interest income (loss) on other investments	9,662	(1,126)	(514)
Other	58	5	18
Total income	91,741	130,186	128,176
Expenses:
Interest expense (Debentures)	2,792	3,832	6,435
Provision for credit loss		27
Other	2,272	1,988	2,749
Total expenses	5,064	5,847	9,184
Income before federal income taxes and equity in undistributed net income of subsidiaries	86,677	124,339	118,992
Income tax expense (benefit)	1,358	(1,339)	(1,878)
Income before equity in undistributed net income of subsidiaries	85,319	125,678	120,870
Equity in undistributed net income of subsidiaries	168,603	41,641	84,234
Net income	$ 253,922	$ 167,319	$ 205,104

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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income	$ 253,922	$ 167,319	$ 205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss	7,955	45,379	18,843
Unrealized (gain) loss on equity securities with readily determinable fair values	123	(107)	(158)
Stock compensation expense	506	743	980
(Decrease) increase in other liabilities	(5,519)	(13,932)	32,157
Net cash provided by operating activities	291,681	305,133	311,565
Investing activities:
Net cash used in investing activities	(915,889)	(343,705)	(318,058)
Financing activities:
Redemption of long-term debt			(25,774)
Proceeds from stock transactions	2,414	542	1,923
Payments of cash dividends - common	(72,838)	(69,928)	(68,670)
Purchase of treasury stock	(716)	(48,878)	(17,845)
Net cash provided by (used in) financing activities	1,836,212	1,778,990	(53,484)
Increase (decrease) in cash and cash equivalents	1,212,004	1,740,418	(59,977)
Cash and cash equivalents at beginning of period	1,997,238	256,820	316,797
Cash and cash equivalents at end of period	3,209,242	1,997,238	256,820
Parent Company | Reportable Legal Entities
Operating activities:
Net income	253,922	167,319	205,104
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss		27
Unrealized (gain) loss on equity securities with readily determinable fair values	(51)	22	(16)
Stock compensation expense	506	743	980
(Decrease) increase in other liabilities	(8,084)	2,467	(58)
Equity in undistributed net income of subsidiaries	(168,603)	(41,641)	(84,234)
Net cash provided by operating activities	77,690	128,937	121,776
Investing activities:
Net decrease (increase) in notes receivable	1,549		(12,100)
(Decrease) increase in other assets and other investments	(11,787)	31,289	5,915
Net cash used in investing activities	(10,238)	31,289	(6,185)
Financing activities:
Redemption of long-term debt			(25,774)
Proceeds from stock transactions	2,414	542	1,923
Payments of cash dividends - common	(72,838)	(69,928)	(68,670)
Purchase of treasury stock	(716)	(48,878)	(17,845)
Net cash provided by (used in) financing activities	(71,140)	(118,264)	(110,366)
Increase (decrease) in cash and cash equivalents	(3,688)	41,962	5,225
Cash and cash equivalents at beginning of period	66,252	24,290	19,065
Cash and cash equivalents at end of period	$ 62,564	$ 66,252	$ 24,290