10-Q

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2020

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 000-09439

INTERNATIONAL BANCSHARES CORPORATION

(Exact name of registrant as specified in its charter)

Texas	74-2157138
(State or other jurisdiction of	(I.R.S. Employer Identification No.)
incorporation or organization)

1200 San Bernardo Avenue, Laredo, Texas 78042-1359

(Address of principal executive offices)

(Zip Code)

(956) 722-7611

(Registrant’s telephone number, including area code)

None

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) 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 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 (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit 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,” “smaller reporting company,” and “emerging growth company, in Rule 12b-2 of the Exchange Act.

Large accelerated filer ⌧	Accelerated filer ◻
Non-accelerated filer ◻	Smaller reporting company ☐
Emerging growth 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ⌧

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date

Class	Shares Issued and Outstanding
Common Stock, $1.00 par value	63,270,747 shares outstanding at May 4, 2020

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements

INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Condition (Unaudited)

(Dollars in Thousands)

	March 31,		December 31,
	2020		2019
Assets
Cash and cash equivalents	$	354,708	$	256,820
Investment securities:
Held to maturity debt securities (Market value of $2,400 on March 31, 2020 and 2,400 on December 31, 2019)		2,400		2,400
Available for sale debt securities (Amortized cost of $3,512,611 on March 31, 2020 and $3,376,070 on December 31, 2019)		3,594,514		3,378,923
Equity securities with readily determinable fair values		6,125		6,095
Total investment securities		3,603,039		3,387,418
Loans		7,024,380		6,894,946
Less allowance for credit losses		(85,273)		(60,278)
Net loans		6,939,107		6,834,668
Bank premises and equipment, net		494,697		506,595
Accrued interest receivable		37,070		36,620
Other investments		298,852		318,427
Cash surrender value of life insurance policies		291,485		289,693
Goodwill		282,532		282,532
Other assets		204,919		200,121
Total assets	$	12,506,409	$	12,112,894

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Condition, continued (Unaudited)

(Dollars in Thousands)

	March 31,		December 31,
	2020		2019
Liabilities and Shareholders’ Equity
Liabilities:
Deposits:
Demand—non-interest bearing	$	3,664,839	$	3,545,905
Savings and interest bearing demand		3,289,956		3,267,829
Time		2,055,093		2,012,300
Total deposits		9,009,888		8,826,034
Securities sold under repurchase agreements		266,472		236,536
Other borrowed funds		728,465		626,511
Junior subordinated deferrable interest debentures		134,642		134,642
Other liabilities		224,431		171,118
Total liabilities		10,363,898		9,994,841
Shareholders’ equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,225,516 shares on March 31, 2020 and 96,214,967 shares on December 31, 2019		96,226		96,215
Surplus		148,508		148,075
Retained earnings		2,191,946		2,200,568
Accumulated other comprehensive income		64,352		2,345
		2,501,032		2,447,203
Less cost of shares in treasury, 32,215,675 shares on March 31, 2020 and 31,015,061 on December 31, 2019		(358,521)		(329,150)
Total shareholders’ equity		2,142,511		2,118,053
Total liabilities and shareholders’ equity	$	12,506,409	$	12,112,894

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Income (Unaudited)

(Dollars in Thousands, except per share data)

	Three Months Ended
	March 31,
	2020		2019
Interest income:
Loans, including fees	$	99,230	$	102,805
Investment securities:
Taxable		16,488		19,300
Tax-exempt		766		1,649
Other interest income		128		309
Total interest income		116,612		124,063
Interest expense:
Savings deposits		3,235		4,243
Time deposits		5,970		4,378
Securities sold under repurchase agreements		465		589
Other borrowings		2,826		3,494
Junior subordinated deferrable interest debentures		1,273		1,950
Total interest expense		13,769		14,654
Net interest income		102,843		109,409
Provision for credit losses		16,836		7,420
Net interest income after provision for credit losses		86,007		101,989
Non-interest income:
Service charges on deposit accounts		17,637		17,260
Other service charges, commissions and fees
Banking		11,166		10,876
Non-banking		1,754		1,509
Investment securities transactions, net		(5)		(4)
Other investments, net		(231)		3,948
Other income		4,809		2,540
Total non-interest income	$	35,130	$	36,129

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Income, continued (Unaudited)

(Dollars in Thousands, except per share data)

	Three Months Ended
	March 31,
	2020		2019
Non-interest expense:
Employee compensation and benefits	$	36,330	$	36,409
Occupancy		6,899		6,377
Depreciation of bank premises and equipment		7,109		6,981
Professional fees		3,970		3,592
Deposit insurance assessments		—		783
Net expense, other real estate owned		3,002		995
Advertising		1,984		2,082
Software and software maintenance		4,491		4,497
Other		13,197		11,235
Total non-interest expense		76,982		72,951
Income before income taxes		44,155		65,167
Provision for income taxes		9,317		13,261
Net income	$	34,838	$	51,906
Basic earnings per common share:
Weighted average number of shares outstanding		65,070,589		65,617,977
Net income	$	0.54	$	0.79
Fully diluted earnings per common share:
Weighted average number of shares outstanding		65,228,824		65,831,162
Net income	$	0.53	$	0.79

See accompanying notes to consolidated financial statements

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income (Unaudited)

(Dollars in Thousands)

	Three Months Ended
	March 31,
	2020		2019
Net income	$	34,838	$	51,906
Other comprehensive income, net of tax:
Net unrealized holding gains on securities available for sale arising during period (net of tax effects of $16,482, and $6,706)		62,003		25,226
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $1 and $1)		4		3
		62,007		25,229
Comprehensive income	$	96,845	$	77,135

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Shareholders’ Equity

Three Months ended March 31, 2020 and 2019

(in Thousands, except per share amounts)

	Number							Other
	of	Common				Retained		Comprehensive		Treasury
	Shares	Stock		Surplus		Earnings		Income (Loss)		Stock		Total
Balance at December 31, 2019	96,215	$	96,215	$	148,075	$	2,200,568	$	2,345	$	(329,150)	$	2,118,053
Net income	—		—		—		34,838		—		—		34,838
Dividends:
Payable ($.55 per share)	—		—		—		(35,128)		—		—		(35,128)
Purchase of treasury stock (1,200,614 shares)	—		—		—		—		—		(29,371)		(29,371)
Exercise of stock options	11		11		214		—		—		—		225
Stock compensation expense recognized in earnings	—		—		219		—		—		—		219
Cumulative adjustment for adoption of new accounting standards, net of tax	—		—		—		(8,332)		—		—		(8,332)
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments	—		—		—		—		62,007		—		62,007
Balance at March 31, 2020	96,226	$	96,226	$	148,508	$	2,191,946	$	64,352	$	(358,521)	$	2,142,511

	Number							Other
	of	Common				Retained		Comprehensive		Treasury
	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	—		—		—		51,906		—		—		51,906
Dividends:
Payable ($.50 per share)	—		—		—		(32,822)		—		—		(32,822)
Purchase of treasury (1,305 shares)	—		—		—		—		—		(54)		(54)
Exercise of stock options	33		33		565		—		—		—		598
Stock compensation expense recognized in earnings	—		—		265		—		—		—		265
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments	—		—		—		—		25,229		—		25,229
Balance at March 31, 2019	96,137	$	96,137	$	146,113	$	2,083,218	$	(29,405)	$	(311,359)	$	1,984,704

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows (Unaudited)

(Dollars in Thousands)

	Three Months Ended
	March 31,
	2020		2019
Operating activities:
Net income	$	34,838	$	51,906
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss expenses		16,836		7,420
Specific reserve, other real estate owned		537		8
Depreciation of bank premises and equipment		7,109		6,981
Gain on sale of bank premises and equipment		(358)		(43)
Gain on sale of other real estate owned		(79)		(469)
Accretion of investment securities discounts		(120)		(55)
Amortization of investment securities premiums		7,373		4,024
Investment securities transactions, net		5		4
Unrealized gain on equity securities with readily determinable fair values		(30)		(138)
Stock based compensation expense		219		265
Losses (earnings) from affiliates and other investments		521		(3,444)
Deferred tax expense		(14,123)		(1,435)
Increase in accrued interest receivable		(450)		(603)
Increase in other assets		(228)		(20,685)
Increase in other liabilities		4,571		23,962
Net cash provided by operating activities		56,621		67,698
Investing activities:
Proceeds from maturities of securities		1,075		—
Proceeds from sales and calls of available for sale securities		18,920		41,420
Purchases of available for sale securities		(421,017)		(145,966)
Principal collected on mortgage backed securities		257,223		132,820
Net increase in loans		(120,789)		(147,124)
Purchases of other investments		(6,760)		(13,045)
Distributions from other investments		26,382		46,677
Purchases of bank premises and equipment		(2,769)		(6,130)
Proceeds from sales of bank premises and equipment		370		1,510
Proceeds from sales of other real estate owned		2,034		707
Net cash used in investing activities	$	(245,331)	$	(89,131)

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows, continued (Unaudited)

(Dollars in Thousands)

	Three Months Ended
	March 31,
	2020		2019
Financing activities:
Net increase in non-interest bearing demand deposits	$	118,934	$	103,879
Net decrease (increase) in savings and interest bearing demand deposits		22,127		78,512
Net increase (decrease) in time deposits		42,793		16,994
Net increase (decrease) in securities sold under repurchase agreements		29,936		48,641
Net decrease (increase) in other borrowed funds		101,954		(194,770)
Purchase of treasury stock		(29,371)		(54)
Proceeds from stock transactions		225		598
Net cash (used in) provided by financing activities		286,598		53,800
(Decrease) increase in cash and cash equivalents		97,888		32,367
Cash and cash equivalents at beginning of period		256,820		316,797
Cash and cash equivalents at end of period	$	354,708	$	349,164
Supplemental cash flow information:
Interest paid	$	13,353	$	13,982
Income taxes paid		206		—
Non-cash investing and financing activities:
Net transfers from loans to other real estate owned	$	486	$	704
Dividends declared, not yet paid on common stock		35,128		32,822
Establishment of lease liability and right-of-use asset		—		6,171
Net trasnfers from bank premises and equipment to other assets		7,546		—

See accompanying notes to consolidated financial statements.

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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements

(Unaudited)

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 2 (Management’s Discussion and Analysis of Financial Condition and Results of Operations) of this report. Our website address is www.ibc.com.

Note 1 — Basis of Presentation

Our accounting and reporting policies conform to accounting principles generally accepted in the United States of America and to general practices within the banking industry. Our consolidated financial statements include the accounts of International Bancshares Corporation, and our wholly-owned bank subsidiaries, International Bank of Commerce, Laredo (“IBC”), Commerce Bank, International Bank of Commerce, Zapata, International Bank of Commerce, Brownsville, International Bank of Commerce, Oklahoma (the “Subsidiary Banks”) and our wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, and IBC Capital Corporation. Our consolidated financial statements are unaudited, but include all adjustments, which, in the opinion of management, are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in our latest Annual Report on Form 10-K. Our consolidated statement of condition at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“US GAAP”) for complete financial statements. Certain reclassifications have been made to make prior periods comparable. Operating results for the three months ended March 31, 2020 are not necessarily indicative of the results for the year ending December 31, 2020 or any future period.

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 statements presented in this report. We have five active operating subsidiaries, the Subsidiary Banks. We apply the provisions of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), FASB ASC 280, “Segment Reporting,” in determining our reportable segments and related disclosures.

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.

On January 1, 2019, we adopted the provisions of ASU 2016-02, “Leases.” ASU 2016-02 amends existing standards for accounting for leases by lessees, with accounting for leases by lessors remaining mainly unchanged from current guidance. The update requires that lessees recognize a lease liability and a right of use asset for all leases (with the exception of short-term leases) at the commencement date of the lease and disclose key information about leasing arrangements. The update is to be applied on a modified retrospective basis for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the consolidated financial statements. In January 2018, the FASB issued a proposal that provides an additional transition method that would allow entities to not apply the guidance in the update in the comparative periods presented in the consolidated financial statements, but instead recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. As part of our business model, we primarily own all property we occupy, with the exception of certain branches operating in grocery stores or shopping centers and certain ATM locations that were classified as operating leases under previous guidance. The adoption of the standard did not have a significant impact on our consolidated financial statements. As of the date of adoption, we recorded a right of use asset and a lease liability of approximately $6.4 million. The right of use asset and lease liability are included in other assets and other liabilities, respectively, on our consolidated statement of condition. Amortization of the right of use asset for the three months ended March 31, 2020 and March 31, 2019 was approximately

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$320,000 and $214,000, respectively, and is included as a part of occupancy expense in our consolidated income statement.

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 amends 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 current 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 allowance for credit losses 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.

Note 2 — Fair Value Measurements

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 inputs, 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.

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The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of March 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
	March 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	3,520,332	$	—	$	3,520,332	$	—
States and political subdivisions		74,182		—		74,182		—
Equity Securities		6,125		6,125		—		—
	$	3,600,639	$	6,125	$	3,594,514	$	—

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of December 31, 2019 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, 2019		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,285,548	$	—	$	3,285,548	$	—
States and political subdivisions		93,375		—		93,375		—
Equity Securities		6,095		6,095		—		—
	$	3,385,018	$	6,095	$	3,378,923	$	—

Available-for-sale debt securities are classified within Level 2 of the valuation hierarchy. Equity securities with readily determinable fair values are classified within Level 1. For debt investments 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 assets and financial liabilities are measured at fair value on a non-recurring basis. The instruments 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).

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The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended March 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 for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	March 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	254	$	—	$	—	$	254	$	93
Other real estate owned		2,581		—		—		2,581		537

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2019 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
	2019		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Impaired loans	$	826	$	—	$	—	$	826	$	43
Other real estate owned		21,614		—		—		21,614		322
Equity investments without readily determinable fair values		28,166		—		—		28,166		4,775

Our assets measured at fair value on a non-recurring basis at March 31, 2020 are limited to loans classified as Watch List – Doubtful and other real estate owned. At December 31, 2019, asset measured at fair value on a non-recurring basis also included an equity investment without a readily determinable fair value. 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 allowance for credit losses. 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 March 31, 2020, we had $1,935,000 of doubtful commercial collateral dependent loans, of which $577,000 had an appraisal performed within the immediately preceding twelve months, and of which $812,000 had an evaluation performed within the immediately preceding twelve months. As of December 31, 2019, we had approximately $2,955,000 of impaired commercial collateral dependent loans, of which $1,426,000 had an appraisal performed within the immediately preceding twelve months and of which $847,000 had an evaluation performed within the immediately preceding twelve months.

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Our 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 impaired 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 allowance for credit 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 three months ended March 31, 2020 and the twelve months ended December 31, 2019, we recorded $4,000 and $9,611,000, respectively, in charges to the allowance for credit losses in connection with loans transferred to other real estate owned. For the three months ended March 31, 2020 and the twelve months ended December 31, 2019, we recorded $537,000 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 March 31, 2020 and December 31, 2019 are outlined below.

Cash and Cash Equivalents

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

Time Deposits with Banks

The carrying amounts of time deposits with banks approximate fair value.

Investment Securities Held-to-Maturity

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

Investment Securities

For investment securities, which 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 6.

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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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 March 31, 2020 and December 31, 2019, the carrying amount of fixed-rate performing loans was $1,454,099,000 and $1,503,811,000, respectively, and the estimated fair value was $1,379,125,000 and $1,481,239,000, 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 March 31, 2020 and December 31, 2019. The fair value of time deposits is based on the discounted value of contractual cashflows. The discount rate is based on currently offered rates. Time deposits are within Level 3 of the fair value hierarchy. At March 31, 2020 and December 31, 2019, the carrying amount of time deposits was $2,055,093,000 and $2,012,300,000, respectively, and the estimated fair value was $2,047,202,000 and $2,011,950,000, respectively.

Securities Sold Under Repurchase Agreements

Securities sold under repurchase agreements include short- and long-term maturities. Due to the contractual terms of the short-term instruments, the carrying amounts approximated fair value at March 31, 2020 and December 31, 2019.

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 March 31, 2020 and December 31, 2019.

Other Borrowed Funds

We currently have short- and long-term borrowings issued from the Federal Home Loan Bank (“FHLB”). Due to the contractual terms of the short-term borrowings, the carrying amounts approximated fair value at March 31, 2020 and December 31, 2019. The long-term borrowings outstanding at March 31, 2020 and December 31, 2019 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 March 31, 2020 and December 31, 2019, the carrying amount of the fixed rate long-term FHLB borrowings was $436,465,000 and $436,511,000, respectively, and the estimated fair value was $498,716,000 and $465,017,000, 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

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at one time 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.

Note 3 — Loans

A summary of loans, by loan type at March 31, 2020 and December 31, 2019 is as follows:

	March 31,		December 31,
	2020		2019
	(Dollars in Thousands)
Commercial, financial and agricultural	$	3,504,826	$	3,379,837
Real estate - mortgage		1,118,192		1,140,377
Real estate - construction		2,216,740		2,185,883
Consumer		45,440		47,800
Foreign		139,182		141,049
Total loans	$	7,024,380	$	6,894,946

Note 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 allowance for credit losses (“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

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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

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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.

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A summary of the transactions in the allowance for credit loan losses by loan class is as follows:

	Three Months Ended March 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 charged to allowance		(2,819)		—		(55)		—		(36)		—		(70)		—		(2,980)
Recoveries credited to allowance		671		—		9		—		1		103		8		—		792
Net (losses) recoveries charged to allowance		(2,148)		—		(46)		—		(35)		103		(62)		—		(2,188)
Credit loss expense		5,823		5,878		2,809		327		635		1,243		68		53		16,836
Balance at March 31,	$	19,067	$	37,421	$	15,004	$	1,758	$	2,782	$	8,452	$	323	$	466	$	85,273

	Three Months Ended March 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,	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charged to allowance		(2,764)		—		(1)		—		(1)		(6)		(63)		—		(2,835)
Recoveries credited to allowance		638		20		283		—		1		102		17		—		1,061
Net (losses) recoveries charged to allowance		(2,126)		20		282		—		—		96		(46)		—		(1,774)
Provision charged to operations		942		(354)		6,245		537		79		(70)		61		(20)		7,420
Balance at March 31,	$	11,412	$	14,789	$	25,880	$	2,345	$	3,546	$	7,745	$	462	$	851	$	67,030

The increase in credit loss expense for the three months ended March 31, 2020 can be primarily attributed to the economic changes that occurred in the first quarter as a result of COVID-19 and the impact of those changes on our first quarter ACL calculation. 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. Impacting the provision for loan loss for the three months ended March 31, 2019 is 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 court approved debtor in possession plan sponsor 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.

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The table below provides additional information on the balance of loans individually or collectively evaluated for impairment and their related allowance, by loan class as of March 31, 2020 and December 31, 2019:

	March 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	342	$	1,367,362	$	18,725
Commercial real estate: other construction & land development		936		116		2,215,804		37,305
Commercial real estate: farmland & commercial		517		—		1,932,848		15,004
Commercial real estate: multifamily		152		—		202,298		1,758
Residential: first lien		92		—		431,496		2,782
Residential: junior lien		—		—		686,604		8,452
Consumer		3		—		45,437		323
Foreign		—		—		139,182		466
Total	$	3,349	$	458	$	7,021,031	$	84,815

	December 31, 2019
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,935	$	249	$	1,290,725	$	10,895
Commercial real estate: other construction & land development		938		116		2,184,945		18,037
Commercial real estate: farmland & commercial		1,208		—		1,895,539		16,533
Commercial real estate: multifamily		165		—		190,265		1,786
Residential: first lien		6,278		—		427,623		3,762
Residential: junior lien		692		—		705,784		7,535
Consumer		1,195		—		46,605		542
Foreign		264		—		140,785		823
Total	$	12,675	$	365	$	6,882,271	$	59,913

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The table below provides additional information on loans accounted for on a non-accrual basis by loan class at March 31, 2020 and December 31, 2019:

	March 31, 2020		December 31, 2019
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	1,901
Commercial real estate: other construction & land development		936		938
Commercial real estate: farmland & commercial		517		1,208
Commercial real estate: multifamily		152		165
Residential: first lien		624		670
Residential: junior lien		—		—
Consumer		3		4
Total non-accrual loans	$	3,881	$	4,886

Watch—List 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. Watch—List 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 tables detail key information regarding our impaired loans by loan class at December 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	December 31, 2019
			Unpaid				Average
	Recorded		Principal		Related		Recorded		Interest
	Investment		Balance		Allowance		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	510	$	516	$	249	$	514	$	—
Commercial real estate: other construction & land development		126		169		116		131		—
Total impaired loans with related allowance	$	636	$	685	$	365	$	645	$	—

	December 31, 2019
			Unpaid		Average
	Recorded		Principal		Recorded		Interest
	Investment		Balance		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	1,425	$	1,516	$	18,794	$	2
Commercial real estate: other construction & land development		812		1,133		1,737		—
Commercial real estate: farmland & commercial		1,208		1,841		22,357		—
Commercial real estate: multifamily		165		168		651		—
Residential: first lien		6,278		6,445		6,988		309
Residential: junior lien		692		692		1,023		42
Consumer		1,195		1,196		1,117		—
Foreign		264		264		278		12
Total impaired loans with no related allowance	$	12,039	$	13,255	$	52,945	$	365

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The following table details key information regarding our impaired loans by loan class at March 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	1,325	$	1,908
Commercial real estate: other construction & land development		134		169
Commercial real estate: farmland & commercial		24,463		24,774
Total impaired loans with related allowance	$	25,922	$	26,851

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	17,370	$	1
Commercial real estate: other construction & land development		1,924		—
Commercial real estate: farmland & commercial		2,305		—
Commercial real estate: multifamily		506		—
Residential: first lien		6,239		75
Residential: junior lien		912		11
Consumer		1,075		—
Foreign		288		3
Total impaired loans with no related allowance	$	30,619	$	90

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 Watch List—Doubtful loans.

	March 31, 2020		December 31, 2019
		(Dollars in Thousands)
Domestic
Commercial	$	—	$	32
Residential: first lien		3,857		5,608
Residential: junior lien		680		692
Consumer		1,217		1,192
Foreign		256		264
Total troubled debt restructuring	$	6,010	$	7,788

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. To date, we have approximately $1,270,763,000 in loans with some degree of payment deferrals in our system. In accordance with interagency guidance issued in March 2020, these short-term deferrals are not considered troubled debt restructurings.

With the passage of the Paycheck Protection Program (“PPP”), administered by the Small Business Association (“SBA”), we are actively assisting our customers with applications for loans through the PPP. PPP loans have a two-year term and earn interest at 1%; however, the loans also include some forgiveness provisions that we expect most customers will utilize. These loans are intended to support eight weeks of payroll and other costs to help those businesses remain viable and allow their employees to pay their bills. As of May 5, 2020, we had approved and closed with the SBA 4,528 PPP loans totaling approximately $461,133,000. The PPP loans are fully guaranteed by the U.S. government through the SBA.

21

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 our management believes 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 can be made only on a subjective basis. It is the judgment of our management that the ACL at March 31, 2020 was adequate to absorb probable losses from loans in the portfolio at that date.

The following tables present information regarding the aging of past due loans by loan class at March 31, 2020 and December 31, 2019:

	March 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	$	4,226	$	776	$	1,949	$	997	$	6,951	$	1,362,060	$	1,369,011
Commercial real estate: other construction & land development		8,953		1,479		145		145		10,577		2,206,163		2,216,740
Commercial real estate: farmland & commercial		22,566		1,543		47,658		47,658		71,767		1,861,598		1,933,365
Commercial real estate: multifamily		124		—		11		—		135		202,315		202,450
Residential: first lien		4,726		1,326		3,624		3,164		9,676		421,912		431,588
Residential: junior lien		1,509		513		1,173		1,173		3,195		683,409		686,604
Consumer		717		166		60		60		943		44,497		45,440
Foreign		3,466		482		1		1		3,949		135,233		139,182
Total past due loans	$	46,287	$	6,285	$	54,621	$	53,198	$	107,193	$	6,917,187	$	7,024,380

	December 31, 2019
							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	$	3,134	$	626	$	1,292	$	421	$	5,052	$	1,287,608	$	1,292,660
Commercial real estate: other construction & land development		509		55		—		—		564		2,185,319		2,185,883
Commercial real estate: farmland & commercial		8,058		2,031		54,928		54,878		65,017		1,831,730		1,896,747
Commercial real estate: multifamily		313		—		165		—		478		189,952		190,430
Residential: first lien		3,229		1,670		3,660		3,107		8,559		425,342		433,901
Residential: junior lien		1,112		477		1,200		1,200		2,789		703,687		706,476
Consumer		467		75		88		88		630		47,170		47,800
Foreign		1,347		3		11		11		1,361		139,688		141,049
Total past due loans	$	18,169	$	4,937	$	61,344	$	59,705	$	84,450	$	6,810,496	$	6,894,946

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A summary of the loan portfolio by credit quality indicator by loan class by year of origination at March 31, 2020 is presented below. A summary of the loan portfolio by credit quality indicator presented at December 31, 2019 is based on guidance prior to the adoption of ASU 2016-13 is also presented below:

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at March 31, 2020
Domestic
Commercial
Pass	$	245,351	$	533,082	$	270,142	$	145,268	$	22,269	$	13,917	$	1,230,029
Special Review		—		71,700		—		—		—		—		71,700
Watch List - Pass		—		11		—		—		—		26		37
Watch List - Substandard		62,569		2,517		504		6		—		—		65,596
Watch List - Doubtful		353		608		455		229		4		—		1,649
Total Commercial	$	308,273	$	607,918	$	271,101	$	145,503	$	22,273	$	13,943	$	1,369,011
Commercial real estate: other construction & land development
Pass	$	136,898	$	1,064,250	$	624,498	$	238,744	$	41,536	$	17,556	$	2,123,482
Special Review		—		16,106		—		—		—		—		16,106
Watch List - Pass		8,000		35,622		370		—		—		—		43,992
Watch List - Substandard		275		31,804		—		—		145		—		32,224
Watch List - Doubtful		—		812		124		—		—		—		936
Total Commercial real estate: other construction & land development	$	145,173	$	1,148,594	$	624,992	$	238,744	$	41,681	$	17,556	$	2,216,740
Commercial real estate: farmland & commercial
Pass	$	139,114	$	675,730	$	385,302	$	203,811	$	132,509	$	215,389	$	1,751,855
Special Review		938		—		4,649		175		3,205		421		9,388
Watch List - Pass		16,713		5,956		2,648		124		587		1		26,029
Watch List - Substandard		1,668		52,471		—		2,348		85,594		3,495		145,576
Watch List - Doubtful		—		243		—		41		—		233		517
Total Commercial real estate: farmland & commercial	$	158,433	$	734,400	$	392,599	$	206,499	$	221,895	$	219,539	$	1,933,365
Commercial real estate: multifamily
Pass	$	10,623	$	58,886	$	38,954	$	64,640	$	14,660	$	14,535	$	202,298
Watch List - Doubtful		141		—		—		—		—		11		152
Total Commercial real estate: multifamily	$	10,764	$	58,886	$	38,954	$	64,640	$	14,660	$	14,546	$	202,450
Residential: first lien
Pass	$	27,821	$	75,150	$	88,482	$	65,513	$	40,903	$	132,027	$	429,896
Special Review		—		—		—		—		249		—		249
Watch List - Pass		—		—		144		—		—		—		144
Watch List - Substandard		—		—		624		—		51		—		675
Watch List - Doubtful		92		—		—		—		—		532		624
Total Residential: first lien	$	27,913	$	75,150	$	89,250	$	65,513	$	41,203	$	132,559	$	431,588
Residential: junior lien
Pass	$	33,344	$	161,204	$	105,315	$	127,651	$	100,080	$	158,201	$	685,795
Special Review		—		—		—		809		—		—		809
Total Residential: junior lien	$	33,344	$	161,204	$	105,315	$	128,460	$	100,080	$	158,201	$	686,604
Consumer
Pass	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,008	$	45,437
Watch List - Doubtful		—		—		—		—		—		3		3
Total Consumer	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,011	$	45,440
Foreign
Pass	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Foreign	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Loans	$	717,547	$	2,893,624	$	1,543,032	$	857,320	$	446,578	$	566,279	$	7,024,380

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			December 31, 2019
			Special		Watch		Watch List—		Watch List—
	Pass		Review		List—Pass		Substandard		Impaired
			(Dollars in Thousands)
Domestic
Commercial	$	1,228,110	$	569	$	39	$	62,007	$	1,935
Commercial real estate: other construction & land development		2,090,370		18,721		41,949		33,905		938
Commercial real estate: farmland & commercial		1,710,446		13,184		20,183		151,726		1,208
Commercial real estate: multifamily		190,265		—		—		—		165
Residential: first lien		426,546		253		144		680		6,278
Residential: junior lien		704,958		826		—		—		692
Consumer		46,605		—		—		—		1,195
Foreign		140,785		—		—		—		264
Total	$	6,538,085	$	33,553	$	62,315	$	248,318	$	12,675

The increase in Special Review Commercial loans at March 31, 2020 can be attributed to the movement of a relationship in the oil and gas production business from the Pass category.

Note 5 — 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 of common stock available for stock option grants under the 2012 Plan, which may be qualified incentive stock options (“ISOs”) or non-qualified stock options. 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 March 31, 2020, 9,414 shares were available for future grants under the 2012 Plan.

A summary of option activity under the stock option plan for the nine months ended March 31, 2020 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, 2019	658,588	$	27.55
Plus: Options granted	26,500		16.84
Less:
Options exercised	10,549		21.37
Options expired	—		—
Options forfeited	7,263		29.55
Options outstanding at March 31, 2020	667,276		27.20	5.71	$	2,131
Options fully vested and exercisable at March 31, 2020	393,999	$	22.02	4.10	$	1,825

Stock-based compensation expense included in the consolidated statements of income for the three months ended March 31, 2020 and March 31, 2019 is $219,000 and $265,000, respectively. As of March 31, 2020, there was approximately $1,704,000 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 1.8 years.

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Note 6 — Investment Securities and Equity Securities with Readily Determinable Fair Values

We classify debt securities into one of three categories: held-to maturity, available-for-sale, or trading. Such debt securities are reassessed for appropriate classification at each reporting date. Securities classified as “held-to-maturity” are carried at amortized cost for financial statement reporting, while securities classified as “available-for-sale” and “trading” 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 accumulated other comprehensive income (loss) until realized, or in the case of losses, when deemed other than temporary. 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 should 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 must be recognized in earnings. We have evaluated the debt securities classified as available-for-sale and held-to-maturity at March 31, 2020 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 March 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	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

	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	$	3,441,216	$	79,298	$	(182)	$	3,520,332	$	3,520,332
Obligations of states and political subdivisions		71,395		2,796		(9)		74,182		74,182
Total investment securities	$	3,512,611	$	82,094	$	(191)	$	3,594,514	$	3,594,514

(1) Included in the carrying value of residential mortgage-backed securities are $548,581 of mortgage-backed securities issued by Ginnie Mae and $2,971,751 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, 2019 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

25

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,285,623	$	16,534	$	(16,609)	$	3,285,548	$	3,285,548
Obligations of states and political subdivisions		90,447		2,933		(5)		93,375		93,375
Total investment securities	$	3,376,070	$	19,467	$	(16,614)	$	3,378,923	$	3,378,923

(1) Included in the carrying value of residential mortgage-backed securities are $521,247 of mortgage-backed securities issued by Ginnie Mae and $2,714,301 of mortgage-backed securities issued by Fannie Mae and Freddie.

The amortized cost and estimated fair value of investment securities at March 31, 2020, 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	$	1,200	$	1,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		355		356
Due after ten years		—		—		71,040		73,826
Residential mortgage-backed securities		—		—		3,441,216		3,520,332
Total investment securities	$	2,400	$	2,400	$	3,512,611	$	3,594,514

Residential mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), Federal National Mortgage Association (“Fannie Mae”), or 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 early September 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.

The amortized cost and fair value of available-for-sale debt investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $997,342,000 and $1,020,890,000, respectively, at March 31, 2020.

Proceeds from the sale and calls of debt securities available-for-sale were $18,920,000 for the three months ended March 31, 2020, which included $0 of mortgage-backed securities. Gross gains of $0 and gross losses of $5 were realized on the sales and calls for the three months ended March 31, 2020. Proceeds from the sale and call of debt securities available-for-sale were $41,420,000 for the three months ended March 31, 2019, which included $0 of mortgage-backed securities. Gross gains of $2 and gross losses of $6 were realized on the sales and calls for the three months ended March 31, 2019, respectively.

26

Gross unrealized losses on debt investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual debt securities have been in a continuous unrealized loss position at March 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	$	7,144	$	(179)	$	361	$	(3)	$	7,505	$	(182)
Obligations of states and political subdivisions		762		(9)		—		—		762		(9)
	$	7,906	$	(188)	$	361	$	(3)	$	8,267	$	(191)

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, 2019 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	$	523,031	$	(2,269)	$	1,448,109	$	(14,340)	$	1,971,140	$	(16,609)
Obligations of states and political subdivisions		766		(5)		—		—		766		(5)
	$	523,797	$	(2,274)	$	1,448,109	$	(14,340)	$	1,971,906	$	(16,614)

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 will more than likely 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 March 31, 2020 and December 31, 2019, the balance in equity securities with readily determinable fair values recorded at fair value were $6,125,000 and $6,095,000, respectively. The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three months ended March 31, 2020 and the three months ended March 31, 2019:

	Three Months Ended
	March 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	30
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	30

27

	Three Months Ended
	March 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	138
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	138

Note 7 — Other Borrowed Funds

Other borrowed funds include FHLB borrowings, which are short-term and 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 mortgage-backed investment securities and a portion of our loan portfolio. At March 31, 2020, other borrowed funds totaled $728,465,000, an increase of 16.3% from $626,511,000 at December 31, 2019. The increase in borrowings can be primarily attributed to increased liquidity needs to fund operations, loan activity, and purchases of available-for-sale securities.

Note 8 — Junior Subordinated Interest Deferrable Debentures

As of March 31, 2020, we have five statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. The five statutory business trusts we formed (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (“Debentures”) that we issued. As of March 31, 2020 and December 31, 2019, the principal amount of Debentures outstanding totaled $134,642,000.

The Debentures are subordinated and junior in right of payment to all 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 our investments and not consolidated in our consolidated financial statements. Although the Capital and Common Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital and Common Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital and Common 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 March 31, 2020 and December 31, 2019, the total $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital.

28

The following table illustrates key information about each of the Capital and Common Securities and their interest rate at March 31, 2020:

	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	4.88	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	3.53	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	3.41	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	3.53	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	3.03	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

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

Note 9 — Common Stock and Dividends

We paid cash dividends of $0.55 per share on April 3, 2020 to record holders of our common stock on April 1, 2020. We paid cash dividends of $0.50 and $0.55 per share on April 15 and October 15, 2019 to record holders of our common stock on April 1 and September 30, 2019, respectively.

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 12, 2020, the Board of Directors extended the repurchase program and for the second year authorized an increase to purchase up to $50 million of common stock during the 12 month period commencing on March 16, 2020 (previous annual stock repurchase programs began on April 9). Shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. Shares purchased in this program will be held in treasury for reissue for various corporate purposes, including employee compensation plans. During the first quarter of 2020, 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 May 5, 2020, a total of 12,261,282 shares had been repurchased under all programs at a cost of $356,883,000. We are not obligated to purchase shares under our stock repurchase program outside of its Rule 10b5-1 trading plan.

Note 10 — Commitments and Contingent Liabilities and Other Tax Matters

We are involved in various legal proceedings that are in various stages of litigation. We have determined, based on discussions with its 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. However, many of these matters are in various stages of proceedings and further developments could cause management to revise its assessment of these matters.

Note 11 — Capital Ratios

Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under

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regulatory accounting practices. Capital amount and classifications are also subject to qualitative judgements by regulators about components, risk-weighting and other factors.

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 Wall Street Reform and Consumer Protection Act (“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 March 31, 2020, 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).

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 March 31, 2020, our capital levels 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”)

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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.

We had a CET1 to risk-weighted assets ratio of 18.23% on March 31, 2020 and 18.58% on December 31, 2019. We had a Tier 1 capital-to-average-total-asset (leverage) ratio of 16.03% and 16.65%, risk-weighted Tier 1 capital ratio of 19.45% and 19.80% and risk-weighted total capital ratio of 20.36% and 20.46% at March 31, 2020 and December 31, 2019, respectively. Our CET1 capital consists of common stock and related surplus, net of treasury stock, and retained earnings. We and our Subsidiary Banks elected to opt-out of the requirement to include most components of accumulated other comprehensive income (loss) in the calculation of CET1 capital. CET1 is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Tier 1 capital includes CET1 capital and additional Tier 1 capital. Additional Tier 1 capital includes the Capital and Common Securities issued by the Trusts (see Note 8 above) up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold qualifies as Tier 2 capital. As of March 31, 2020, the total of $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital. We actively monitor the regulatory capital ratios to ensure that our Subsidiary Banks are well-capitalized under the regulatory framework.

The CET1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk-weight category, and certain off-balance-sheet items, among other things. The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets, among other things.

We and our Subsidiary Banks are subject to the regulatory capital requirements administered by the Federal Reserve, and, for our Subsidiary Banks, the FDIC. Regulatory authorities can initiate certain mandatory actions if we or any of our Subsidiary Banks fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of March 31, 2020, that we and each of our Subsidiary Banks meet all capital adequacy requirements to which we are subject.

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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 2 (Management’s Discussion and Analysis of Financial Condition and Results of Operations) of this report.  Our website address is www.ibc.com.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2019, included in our 2019 Form 10-K. Operating results for the three months ended March 31, 2020 are not necessarily indicative of the results for the year ending December 31, 2020, or any future period.

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, 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, the repeal of federal prohibitions 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, renegotiation and recent changes made to the North American Free Trade Agreement, set to be replaced by the 2018 United States-Mexico-Canada Agreement or 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 potential future acquisitions as well as our ability to maintain our current branch network and enter new markets to capitalize on growth opportunities.

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

● Additions to our allowance for credit losses 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 required 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 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 impacts of the 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 187 facilities and 284 ATMs, and provide 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 an insurance agency, a liquidating subsidiary, a broker/dealer and a fifty percent interest in an investment banking unit that owns a broker/dealer. 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 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. The Subsidiary Banks have various compensation plans, including incentive based compensation, for fairly compensating employees. The

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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.

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. 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 South, Central and Southeast Texas and the State of Oklahoma.

In March 2020, the World Health Organization recognized the outbreak of the novel Coronavirus Disease 2019 (“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 has curtailed activity in the governmental, commercial and consumer sectors. 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, and, in many communities, cancelling what remained of the school year. The consequence of these actions, and the responses by individuals and businesses affected, has resulted in 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.

We have continued to work with our customers to assist them through these difficult times and we are capitalizing 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 need 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 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 in 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”), a nearly $350 billion program designed to aid small businesses through federally guaranteed loans distributed through banks. These loans are intended to support eight weeks of payroll and other costs to help those businesses remain viable and allow their employees to pay their bills. The $350 billion program was fully exhausted on April 16, 2020, though some businesses have now begun refunding amounts received under the PPP due to the United States Treasury Department’s guidance that recipients who do not apply in “good faith” and who had “sources of liquidity sufficient to support their ongoing operations in a manner that is not significantly detrimental to the business,” could face repercussions. Subsequently, on April 24, 2020, the Paycheck Protection Program and Health Care Enhancement Act (“CARES Part II”) was signed into law. CARES Part II provides an additional funding of $320 billion for the PPP program. We have been active participants in helping our customers obtain PPP loans and have underwritten approximately 4,528 loans with an approximate value of $461,133,000.

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.

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Results of Operations

Summary

Consolidated Statements of Condition Information

	March 31, 2020		December 31, 2019		Percent Increase (Decrease)
	(Dollars in Thousands)
Assets	$	12,506,409	$	12,112,894	3.2	%
Net loans		6,939,107		6,834,668	1.5
Deposits		9,009,888		8,826,034	2.1
Securities sold under repurchase agreements		266,472		236,536	12.7
Other borrowed funds		728,465		626,511	16.3
Junior subordinated deferrable interest debentures		134,642		134,642	—
Shareholders’ equity		2,142,511		2,118,053	1.2

Consolidated Statements of Income Information

	Three Months Ended
	March 31,				Percent
	(Dollars in Thousands)				Increase
	2020		2019		(Decrease)
Interest income	$	116,612	$	124,063	(6.0)	%
Interest expense		13,769		14,654	(6.0)
Net interest income		102,843		109,409	(6.0)
Provision for credit losses		16,836		7,420	126.9
Non-interest income		35,130		36,129	(2.8)
Non-interest expense		76,982		72,951	5.5
Net income		34,838		51,906	(32.9)	%
Per common share:
Basic	$	.54	$	.79	(31.6)	%
Diluted		.53		.79	(32.9)

Net Income

Net income for the three months ended March 31, 2020 decreased by 32.9% compared to the same period of 2019. Net income for the three months ended March 31, 2020 was primarily impacted by an increase in the provision for credit losses due to the economic changes that occurred in the first quarter as a result of COVID-19 and the impact of those changes on our first quarter ACL calculation. 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. Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions. Under the new model, our provision for credit losses increased to $13.3 million, net of tax. Net interest income was negatively impacted by the Federal Reserve Board (“FRB”) action to decrease interest rates in March 2020. Net income for the three months ended March 31, 2019 was positively affected by an increase in net interest income due to a higher volume of loans and an increase in the overall yield of the loan portfolio. Interest expense for the three months ended March 31, 2019 increased primarily due to an increase in the cost of borrowings expense, and an increase in the interest paid on savings and time deposit accounts, which had increased because the FRB had been raising interest rates during that period. Net income for 2019 was negatively impacted by an increase in the provision for probable loan losses due to a charge-off of $7.5 million, net of tax, on a relationship that was secured by real property on which car dealerships are operated.

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Net Interest Income

	Three Months Ended
	March 31,				Percent
	(Dollars in Thousands)				Increase
	2020		2019		(Decrease)
Interest Income:
Loans, including fees	$	99,230	$	102,805	(3.5)	%
Investment securities:
Taxable		16,488		19,300	(14.6)
Tax-exempt		766		1,649	(53.5)
Other interest income		128		309	(58.6)
Total interest income		116,612		124,063	(6.0)
Interest expense:
Savings deposits		3,235		4,243	(23.8)
Time deposits		5,970		4,378	36.4
Securities sold under Repurchase agreements		465		589	(21.1)
Other borrowings		2,826		3,494	(19.1)
Junior subordinated interest deferrable debentures		1,273		1,950	(34.7)
Total interest expense		13,769		14,654	(6.0)
Net interest income	$	102,843	$	109,409	(6.0)	%

The decrease in net interest income for the three months ended March 31, 2020 can be attributed to a decrease in interest income on loans and investment securities arising from the recent Federal Reserve Board actions to lower interest rates and a decrease in the average size of the available-for-sale securities portfolio. Net interest income for the three months ended March 31, 2019 was positively impacted by increased levels of interest income arising from an increase in loans outstanding. Interest expense on other borrowings consists of interest expense on FHLB borrowings and has decreased as the level of borrowings outstanding has decreased. Interest expense on savings and time deposits for the same periods also increased in line with internal rate increases paid on such deposits in line with market interest rates as a result of Federal Reserve Board actions and to remain competitive with competitors in the markets we serve. 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. 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 twice a year (see table on page 45 for the March 31, 2020 gap analysis). Our management currently believes that we are properly positioned for interest rate changes; however if our management determines at any time that the 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.

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Non-Interest Income

	Three Months Ended
	March 31,				Percent
	(Dollars in Thousands)				Increase
	2020		2019		(Decrease)
Service charges on deposit accounts	$	17,637	$	17,260	2.2	%
Other service charges, commissions and fees
Banking		11,166		10,876	2.7
Non-banking		1,754		1,509	16.2
Investment securities transactions, net		(5)		(4)	25.0
Other investments, net		(231)		3,948	(105.9)
Other income		4,809		2,540	89.3
Total non-interest income	$	35,130	$	36,129	(2.8)	%

Total non-interest income for the three months ended March 31, 2020 decrease by 2.8% compared to the same period of 2019. Net income for the three months ended 2020 was negatively impacted by our share of losses from an equity method investment in which we hold an interest. Non-interest income from other investments for the three months ended March 31, 2019 was positively impacted by our share of income from a real estate development partnership in which it holds a majority interest.

Non-Interest Expense

	Three Months Ended
	March 31,				Percent
	(Dollars in Thousands)				Increase
	2020		2019		(Decrease)
Employee compensation and benefits	$	36,330	$	36,409	(0.2)	%
Occupancy		6,899		6,377	8.2
Depreciation of bank premises and equipment		7,109		6,981	1.8
Professional fees		3,970		3,592	10.5
Deposit insurance assessments		—		783	(100.0)
Net expense, other real estate owned		3,002		995	201.7
Advertising		1,984		2,082	(4.7)
Software and software maintenance		4,491		4,497	(0.1)
Other		13,197		11,235	17.5
Total non-interest expense	$	76,982	$	72,951	5.5	%

Non-interest expense for the three months ended March 31, 2020 increased by 5.5% compared to the same period of 2019. The increase can be primarily attributed to an increase in the net cost of operations on other real estate owned due to the ongoing carrying costs. Non-interest expense for the three months ended March 31, 2019 was impacted by an increase in costs on our compensation and benefit plans as a result of our continued review of those plans and necessary increases, remain competitive and compensate our staff based on their performance, as well as an increase in depreciation expense as we continue to invest in our network infrastructure, equipment and facilities.

Financial Condition

Allowance for Credit Losses

The allowance for credit losses increased 41.5% to $85,273,000 at March 31, 2020 from $60,278,000 at December 31, 2019. The provision for credit losses charged to expense increased 126.9% for the three months ended March 31, 2020 to $16,836,000, compared to $7,420,000 for the same period of 2019. The increase in the allowance for

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credit losses can be primarily attributed to the economic changes that occurred in the first quarter as a result of COVID-19 and the impact of those changes on our first quarter ACL calculation. 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. Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions. Expected credit losses capture historical information, current conditions, and reasonable and supportable forecasts of future conditions. The allowance for credit losses was 1.21% and .87% of total loans at March 31, 2020 and December 31, 2019, respectively.

Investment Securities

Residential mortgage-backed debt securities are securities primarily issued by Freddie Mac, Fannie Mae, or Ginnie Mae. Investments in debt residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. Government. Investments in debt 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 early September 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

Net loans increased by 1.5% to $6,939,107,000 at March 31, 2020, from $6,834,668,000 at December 31, 2019.

Deposits

Deposits increased by 2.1% to $9,009,888,000 at March 31, 2020, compared to $8,826,034,000 at December 31, 2019. Although deposits at March 31, 2020 increased from December 31, 2019, and we have experienced some growth in deposits over the last few years, we are still experiencing a substantial amount of competition for deposits at higher than market rates. As a result, we have attempted to maintain certain deposit relationships but have allowed certain deposits to leave as the result of aggressive pricing by competitors.

Foreign Operations

On March 31, 2020, we had $12,506,409,000 of consolidated assets, of which approximately $139,182,000, or 1.1%, was related to loans outstanding to borrowers domiciled in foreign countries, compared to $141,049,000, or 1.2%, at December 31, 2019. Of the $139,182,000, 87.8% is directly or indirectly secured by U.S. assets, certificates of deposits and real estate; 12.1% is secured by foreign real estate or other assets; and 0.1% is unsecured.

Critical Accounting Policies

We have established various accounting policies that 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 that 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

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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

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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,

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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.

Liquidity and Capital Resources

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. Deposits from persons and entities domiciled in Mexico comprise a stable portion of the deposit base of our Subsidiary Banks. Other important funding sources for our Subsidiary Banks during 2020 and 2019 were borrowings from the FHLB, securities sold under repurchase agreements and large certificates of deposit, requiring management to closely monitor our asset/liability mix in terms of both rate sensitivity and maturity distribution. The borrowings from FHLB are primarily short-term in nature and are renewed at maturity. 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 bank 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. 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.

We maintain an adequate level of capital as a margin of safety for our depositors and shareholders. At March 31, 2020, shareholders’ equity was $2,142,511,000 compared to $2,118,053,000 at December 31, 2019. The increase in shareholders’ equity can be primarily attributed to the retention of earnings offset by the payment of dividends to shareholders’ and other comprehensive income.

Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amount and classifications are also subject to qualitative judgements by regulators about components, risk-weighting and other factors.

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 Act 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.  Management believes, as of March 31, 2020, that we and each of our Subsidiary Banks meet all fully phased-in capital adequacy requirements.

On November 21, 2017, the Office of the Comptroller of the Currency (“OCC”), the FRB 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

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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).

In December 2018, the federal banking 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 Accounting Standards Update (“ASU”) 2016-13 to ASC 326, “Financial Instruments – Credit Losses,” as amended, on January 1, 2020.

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.

We had a CET1 to risk-weighted assets ratio of 17.61% on March 31, 2020 and 18.58% on December 31, 2019. We had a Tier 1 capital-to-average-total-asset (leverage) ratio of 11.75% and 16.65%, risk-weighted Tier 1 capital ratio of 18.84% and 19.80% and risk-weighted total capital ratio of 19.75% and 20.46% at March 31, 2020 and December 31, 2019, respectively. Our CET1 capital consists of common stock and related surplus, net of treasury stock, and retained earnings. We and our Subsidiary Banks elected to opt-out of the requirement to include most components of accumulated other comprehensive income (loss) in the calculation of CET1 capital. CET1 is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Tier 1 capital includes CET1 capital and additional Tier 1 capital. Additional Tier 1 capital includes the Capital and Common Securities issued by the Trusts (see Note 8 above) up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold qualifies as Tier 2 capital. As of March 31, 2020, the total of $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital. We actively monitor the regulatory capital ratios to ensure that our Subsidiary Banks are well-capitalized under the regulatory framework.

The CET1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk-weight category, and certain off-balance-sheet items, among other things. The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets, among other things.

We and our Subsidiary Banks are subject to the regulatory capital requirements administered by the Federal Reserve, and, for our Subsidiary Banks, the FDIC. Regulatory authorities can initiate certain mandatory actions if we or any of our Subsidiary Banks fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of March 31, 2020, that we and each of our Subsidiary Banks meet all capital adequacy requirements to which we are subject.

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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 anticipate fluctuations in interest rates by adjusting the balance between sources and uses of funds as deemed appropriate. The net-interest rate sensitivity as of March 31, 2020 is illustrated in the table entitled “Interest Rate Sensitivity,” below. This information reflects the balances of assets and liabilities for which rates are subject to change. A mix of assets and liabilities that are roughly equal in volume and re-pricing characteristics represents a matched interest rate sensitivity position. Any excess of assets or liabilities results in an interest rate sensitivity gap.

We undertake an interest rate sensitivity analysis to monitor the potential risk on future earnings resulting from the impact of possible future changes in interest rates on currently existing net asset or net liability positions. However, this type of analysis is as of a point-in-time position, when in fact that position can quickly change as market conditions, customer needs, and management strategies change. Thus, interest rate changes do not affect all categories of assets and liabilities equally or at the same time. As indicated in the table, we are asset sensitive in both the short and long term scenarios. Our Asset and Liability Committee semi-annually reviews the consolidated position along with simulation and duration models, and makes adjustments as needed to control our interest rate risk position. We use modeling of future events as a primary tool for monitoring interest rate risk.

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Interest Rate Sensitivity

(Dollars in Thousands)

	Rate/Maturity
			Over 3		Over 1
	3 Months		Months to		Year to 5		Over 5
March 31, 2020	or Less		1 Year		Years		Years		Total
	(Dollars in Thousands)
Rate sensitive assets
Investment securities	$	272,694	$	848,964	$	2,407,199	$	74,182	$	3,603,039
Loans, net of non-accruals		5,546,141		168,568		182,214		1,123,576		7,020,499
Total earning assets	$	5,818,835	$	1,017,532	$	2,589,413	$	1,197,758	$	10,623,538
Cumulative earning assets	$	5,818,835	$	6,836,367	$	9,425,780	$	10,623,538
Rate sensitive liabilities
Time deposits	$	833,616	$	1,033,923	$	187,526	$	28	$	2,055,093
Other interest bearing deposits		3,289,956		—		—		—		3,289,956
Securities sold under repurchase agreements		266,472		—		—		—		266,472
Other borrowed funds		292,000		—		—		436,465		728,465
Junior subordinated deferrable interest debentures		134,642		—		—		—		134,642
Total interest bearing liabilities	$	4,816,686	$	1,033,923	$	187,526	$	436,493	$	6,474,628
Cumulative sensitive liabilities	$	4,816,686	$	5,850,609	$	6,038,135	$	6,474,628
Repricing gap	$	1,002,149	$	(16,391)	$	2,401,887	$	761,265	$	4,148,910
Cumulative repricing gap		1,002,149		985,758		3,387,645		4,148,910
Ratio of interest-sensitive assets to liabilities		1.21		0.98		13.81		2.74		1.64
Ratio of cumulative, interest-sensitive assets to liabilities		1.21		1.17		1.56		1.64

Item 3. Quantitative and Qualitative Disclosures about Market Risk

During the three months ended March 31, 2020, there were no material changes in market risk exposures that affected the quantitative and qualitative disclosures regarding market risk presented under the caption “Liquidity and Capital Resources” located on pages 17 through 22 of our 2019 Annual Report as filed as Exhibit 13 to our Form 10-K for the year ended December 31, 2019.

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Item 4. Controls and Procedures

Disclosure Controls and Procedures

We maintain disclosure controls and procedures designed to ensure that information required to be disclosed in reports filed under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within specified time periods. As of the end of the period covered by this Quarterly Report on Form 10-Q, our principal executive officer and principal financial officer evaluated, with the participation of our management, the effectiveness of our disclosure controls and procedures (as defined in Exchange Act rules 13a-15(e) and 15d-15(e)). Based on the evaluation, which disclosed no material weaknesses, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

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 any current legal proceedings, 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. However, many of these matters are in various stages of proceedings and further developments could cause management to revise its assessment of these matters.

1A. Risk Factors

We have made the following addition to our risk factors as previously disclosed in Item 1A to Part I of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

We may be adversely affected by the world-wide COVID-19 pandemic.

The COVID-19 outbreak may have a direct or indirect adverse impact on certain of our customers. 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 are likely to experience similar disruptions and economic hardships as the COVID-19 pandemic persists. In addition, COVID-19 and the related response/effects could 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 the 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 CARES Act, 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

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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.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

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 12, 2020, the Board of Directors extended the repurchase program and for the second year authorized an increase to purchase up to $50 million of common stock during the 12 month period commencing on March 16, 2020 (previous annual stock repurchase programs began on April 9). Shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. Shares purchased in this program will be held in treasury for reissue for various corporate purposes, including employee compensation plans. During the first quarter of 2020, 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 May 5, 2020, a total of 12,261,282 shares had been repurchased under all programs at a cost of $356,883,000. 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 March 31, 2020.

				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)
January 1 – January 31, 2020	—	$	—	—	$	32,209,000
February 1 – February 29, 2020	—		—	—		32,209,000
March 1 – March 31, 2020	1,200,614		24.46	—		39,818,000
Total	1,200,614	$	24.46	—

(1) The repurchase program was extended and increased on March 12, 2020 and allows for the purchase of up to an additional $50,000,000 of common stock through March 16, 2021.

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Item 6. Exhibits

The following exhibits are filed as a part of this Report:

31(a) —Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

31(b) —Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32(a) —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

32(b) —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 (included in Exhibit 101)

++ Attached as Exhibit 101 to this report are the following documents formatted in Inline XBRL (Extensible Business Reporting Language): (i) the Cover Page to this Form 10-Q; (ii) the Condensed Consolidated Statement of Earnings for the three months ended March 31, 2020 and 2019; (iii) the Condensed Consolidated Balance Sheet as of March 31, 2020 and December 31, 2019; and (iv) the Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2020 and March 31, 2019.

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SIGNATURES

Pursuant to the requirements 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
Date:	May 7, 2020	/s/ Dennis E. Nixon
		Dennis E. Nixon
		President
Date:	May 7, 2020	/s/ Judith I. Wawroski
		Judith I. Wawroski
		Treasurer

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EX-31.(A)

Exhibit 31(a)

Certification of Chief Executive Officer

pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Dennis E. Nixon, certify that:

1.I have reviewed this report on form 10-Q 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 the 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:  May 7, 2020

/s/  Dennis E. Nixon

Dennis E. Nixon

President (Chief Executive Officer)

EX-31.(B)

Exhibit 31(b)

Certification of Chief Financial Officer

pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Judith I. Wawroski, certify that:

1.I have reviewed this report on form 10-Q 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: May 7, 2020

/s/ Judith I. Wawroski

Judith I. Wawroski

Treasurer (Principal Financial Officer)

EX-32.(A)

Exhibit 32(a)

CERTIFICATION PURSUANT TO

18 U.S.C. 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of International Bancshares Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dennis E. Nixon, Chief 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(a) 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.

By:	/s/ Dennis E. Nixon
	Dennis E. Nixon
	President
Date:	May 7, 2020

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. 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, 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 32(b)

CERTIFICATION PURSUANT TO

18 U.S.C. 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of International Bancshares Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Judith I. Wawroski, 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(a) 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.

Ay 9
	By:	/s/ Judith I. Wawroski
		Judith I. Wawroski
		Treasurer
	Date:	May 7, 2020

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. 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, 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.

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Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Consolidated Statements of Condition
Held to maturity, Market value (in dollars)	$ 2,400	$ 2,400
Available for sale, Amortized cost (in dollars)	$ 3,512,611	$ 3,376,070
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	96,225,516	96,214,967
Treasury, shares	32,215,675	31,015,061

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Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Surplus	Retained Earnings	Other Comprehensive Income (Loss)	Treasury Stock	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			51,906			51,906
Dividends:
Dividends			(32,822)			(32,822)
Purchase of treasury stock					(54)	(54)
Exercise of stock options	$ 33	565				598
Exercise of stock options (in shares)	33
Stock compensation expense recognized in earnings		265				265
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments				25,229		25,229
Balance at Mar. 31, 2019	$ 96,137	146,113	2,083,218	(29,405)	(311,359)	1,984,704
Balance (in shares) at Mar. 31, 2019	96,137
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			34,838			34,838
Dividends:
Dividends			(35,128)			(35,128)
Purchase of treasury stock					(29,371)	(29,371)
Exercise of stock options	$ 11	214				225
Exercise of stock options (in shares)	11
Stock compensation expense recognized in earnings		219				219
Other comprehensive income, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments				62,007		62,007
Balance at Mar. 31, 2020	$ 96,226	$ 148,508	2,191,946	$ 64,352	$ (358,521)	2,142,511
Balance (in shares) at Mar. 31, 2020	96,226
Dividends:
Cumulative adjustment for adoption of new accounting standards, net of tax			$ (8,332)			$ (8,332)

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Common Stock and Dividends

3 Months Ended

Mar. 31, 2020

Common Stock and Dividends

Common Stock and Dividends

Note 9 — Common Stock and Dividends

We paid cash dividends of $0.55 per share on April 3, 2020 to record holders of our common stock on April 1, 2020. We paid cash dividends of $0.50 and $0.55 per share on April 15 and October 15, 2019 to record holders of our common stock on April 1 and September 30, 2019, respectively.

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 12, 2020, the Board of Directors extended the repurchase program and for the second year authorized an increase to purchase up to $50 million of common stock during the 12 month period commencing on March 16, 2020 (previous annual stock repurchase programs began on April 9). Shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. Shares purchased in this program will be held in treasury for reissue for various corporate purposes, including employee compensation plans. During the first quarter of 2020, 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 May 5, 2020, a total of 12,261,282 shares had been repurchased under all programs at a cost of $356,883,000. We are not obligated to purchase shares under our stock repurchase program outside of its Rule 10b5-1 trading plan.

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Stock Options

3 Months Ended

Mar. 31, 2020

Stock Options

Stock Options

Note 5 — 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 of common stock available for stock option grants under the 2012 Plan, which may be qualified incentive stock options (“ISOs”) or non-qualified stock options. 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 March 31, 2020, 9,414 shares were available for future grants under the 2012 Plan.

A summary of option activity under the stock option plan for the nine months ended March 31, 2020 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, 2019	658,588	$	27.55
Plus: Options granted	26,500		16.84
Less:
Options exercised	10,549		21.37
Options expired	—		—
Options forfeited	7,263		29.55
Options outstanding at March 31, 2020	667,276		27.20	5.71	$	2,131
Options fully vested and exercisable at March 31, 2020	393,999	$	22.02	4.10	$	1,825

Stock-based compensation expense included in the consolidated statements of income for the three months ended March 31, 2020 and March 31, 2019 is $219,000 and $265,000, respectively. As of March 31, 2020, there was approximately $1,704,000 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 1.8 years.

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Basis of Presentation

3 Months Ended

Mar. 31, 2020

Basis of Presentation

Basis of Presentation

Note 1 — Basis of Presentation

Our accounting and reporting policies conform to accounting principles generally accepted in the United States of America and to general practices within the banking industry. Our consolidated financial statements include the accounts of International Bancshares Corporation, and our wholly-owned bank subsidiaries, International Bank of Commerce, Laredo (“IBC”), Commerce Bank, International Bank of Commerce, Zapata, International Bank of Commerce, Brownsville, International Bank of Commerce, Oklahoma (the “Subsidiary Banks”) and our wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, and IBC Capital Corporation. Our consolidated financial statements are unaudited, but include all adjustments, which, in the opinion of management, are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in our latest Annual Report on Form 10-K. Our consolidated statement of condition at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“US GAAP”) for complete financial statements. Certain reclassifications have been made to make prior periods comparable. Operating results for the three months ended March 31, 2020 are not necessarily indicative of the results for the year ending December 31, 2020 or any future period.

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 statements presented in this report. We have five active operating subsidiaries, the Subsidiary Banks. We apply the provisions of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), FASB ASC 280, “Segment Reporting,” in determining our reportable segments and related disclosures.

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.

On January 1, 2019, we adopted the provisions of ASU 2016-02, “Leases.” ASU 2016-02 amends existing standards for accounting for leases by lessees, with accounting for leases by lessors remaining mainly unchanged from current guidance. The update requires that lessees recognize a lease liability and a right of use asset for all leases (with the exception of short-term leases) at the commencement date of the lease and disclose key information about leasing arrangements. The update is to be applied on a modified retrospective basis for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the consolidated financial statements. In January 2018, the FASB issued a proposal that provides an additional transition method that would allow entities to not apply the guidance in the update in the comparative periods presented in the consolidated financial statements, but instead recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. As part of our business model, we primarily own all property we occupy, with the exception of certain branches operating in grocery stores or shopping centers and certain ATM locations that were classified as operating leases under previous guidance. The adoption of the standard did not have a significant impact on our consolidated financial statements. As of the date of adoption, we recorded a right of use asset and a lease liability of approximately $6.4 million. The right of use asset and lease liability are included in other assets and other liabilities, respectively, on our consolidated statement of condition. Amortization of the right of use asset for the three months ended March 31, 2020 and March 31, 2019 was approximately

$320,000 and $214,000, respectively, and is included as a part of occupancy expense in our consolidated income statement.

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 amends 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 current 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 allowance for credit losses 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.

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Allowance for Credit Losses (Impairment By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	$ 3,349	$ 12,675
Loans Individually Evaluated for Impairment, Allowance	458	365
Loans Collectively Evaluated for Impairment, Recorded Investment	7,021,031	6,882,271
Loans Collectively Evaluated for Impairment, Allowance	84,815	59,913
Commercial
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	1,649	1,935
Loans Individually Evaluated for Impairment, Allowance	342	249
Loans Collectively Evaluated for Impairment, Recorded Investment	1,367,362	1,290,725
Loans Collectively Evaluated for Impairment, Allowance	18,725	10,895
Real estate - construction
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	936	938
Loans Individually Evaluated for Impairment, Allowance	116	116
Loans Collectively Evaluated for Impairment, Recorded Investment	2,215,804	2,184,945
Loans Collectively Evaluated for Impairment, Allowance	37,305	18,037
Commercial Real Estate: Farmland and Commercial
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	517	1,208
Loans Collectively Evaluated for Impairment, Recorded Investment	1,932,848	1,895,539
Loans Collectively Evaluated for Impairment, Allowance	15,004	16,533
Commercial Real Estate: Multifamily
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	152	165
Loans Collectively Evaluated for Impairment, Recorded Investment	202,298	190,265
Loans Collectively Evaluated for Impairment, Allowance	1,758	1,786
Residential First Lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	92	6,278
Loans Collectively Evaluated for Impairment, Recorded Investment	431,496	427,623
Loans Collectively Evaluated for Impairment, Allowance	2,782	3,762
Residential Junior Lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment		692
Loans Collectively Evaluated for Impairment, Recorded Investment	686,604	705,784
Loans Collectively Evaluated for Impairment, Allowance	8,452	7,535
Consumer
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	3	1,195
Loans Collectively Evaluated for Impairment, Recorded Investment	45,437	46,605
Loans Collectively Evaluated for Impairment, Allowance	323	542
Foreign
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment		264
Loans Collectively Evaluated for Impairment, Recorded Investment	139,182	140,785
Loans Collectively Evaluated for Impairment, Allowance	$ 466	$ 823

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Allowance for Credit Losses (Portfolio Credit Quality) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loan portfolio by credit quality indicator
2020	$ 717,547
2019	2,893,624
2018	1,543,032
2017	857,320
2016	446,578
Prior	566,279
Total loans	7,024,380	$ 6,894,946
Pass
Loan portfolio by credit quality indicator
Total loans		6,538,085
Special Review
Loan portfolio by credit quality indicator
Total loans		33,553
Watch List - Pass
Loan portfolio by credit quality indicator
Total loans		62,315
Watch List - Substandard
Loan portfolio by credit quality indicator
Total loans		248,318
Commercial
Loan portfolio by credit quality indicator
2020	308,273
2019	607,918
2018	271,101
2017	145,503
2016	22,273
Prior	13,943
Total loans	1,369,011	1,292,660
Commercial | Pass
Loan portfolio by credit quality indicator
2020	245,351
2019	533,082
2018	270,142
2017	145,268
2016	22,269
Prior	13,917
Total loans	1,230,029	1,228,110
Commercial | Special Review
Loan portfolio by credit quality indicator
2019	71,700
Total loans	71,700	569
Commercial | Watch List - Pass
Loan portfolio by credit quality indicator
2019	11
Prior	26
Total loans	37	39
Commercial | Watch List - Substandard
Loan portfolio by credit quality indicator
2020	62,569
2019	2,517
2018	504
2017	6
Total loans	65,596	62,007
Commercial | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	353
2019	608
2018	455
2017	229
2016	4
Total loans	1,649
Real estate - construction
Loan portfolio by credit quality indicator
2020	145,173
2019	1,148,594
2018	624,992
2017	238,744
2016	41,681
Prior	17,556
Total loans	2,216,740	2,185,883
Real estate - construction | Pass
Loan portfolio by credit quality indicator
2020	136,898
2019	1,064,250
2018	624,498
2017	238,744
2016	41,536
Prior	17,556
Total loans	2,123,482	2,090,370
Real estate - construction | Special Review
Loan portfolio by credit quality indicator
2019	16,106
Total loans	16,106	18,721
Real estate - construction | Watch List - Pass
Loan portfolio by credit quality indicator
2020	8,000
2019	35,622
2018	370
Total loans	43,992	41,949
Real estate - construction | Watch List - Substandard
Loan portfolio by credit quality indicator
2020	275
2019	31,804
2016	145
Total loans	32,224	33,905
Real estate - construction | Watch List - Doubtful
Loan portfolio by credit quality indicator
2019	812
2018	124
Total loans	936
Commercial Real Estate: Farmland and Commercial
Loan portfolio by credit quality indicator
2020	158,433
2019	734,400
2018	392,599
2017	206,499
2016	221,895
Prior	219,539
Total loans	1,933,365	1,896,747
Commercial Real Estate: Farmland and Commercial | Pass
Loan portfolio by credit quality indicator
2020	139,114
2019	675,730
2018	385,302
2017	203,811
2016	132,509
Prior	215,389
Total loans	1,751,855	1,710,446
Commercial Real Estate: Farmland and Commercial | Special Review
Loan portfolio by credit quality indicator
2020	938
2018	4,649
2017	175
2016	3,205
Prior	421
Total loans	9,388	13,184
Commercial Real Estate: Farmland and Commercial | Watch List - Pass
Loan portfolio by credit quality indicator
2020	16,713
2019	5,956
2018	2,648
2017	124
2016	587
Prior	1
Total loans	26,029	20,183
Commercial Real Estate: Farmland and Commercial | Watch List - Substandard
Loan portfolio by credit quality indicator
2020	1,668
2019	52,471
2017	2,348
2016	85,594
Prior	3,495
Total loans	145,576	151,726
Commercial Real Estate: Farmland and Commercial | Watch List - Doubtful
Loan portfolio by credit quality indicator
2019	243
2017	41
Prior	233
Total loans	517
Commercial Real Estate: Multifamily
Loan portfolio by credit quality indicator
2020	10,764
2019	58,886
2018	38,954
2017	64,640
2016	14,660
Prior	14,546
Total loans	202,450	190,430
Commercial Real Estate: Multifamily | Pass
Loan portfolio by credit quality indicator
2020	10,623
2019	58,886
2018	38,954
2017	64,640
2016	14,660
Prior	14,535
Total loans	202,298	190,265
Commercial Real Estate: Multifamily | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	141
Prior	11
Total loans	152
Residential First Lien
Loan portfolio by credit quality indicator
2020	27,913
2019	75,150
2018	89,250
2017	65,513
2016	41,203
Prior	132,559
Total loans	431,588	433,901
Residential First Lien | Pass
Loan portfolio by credit quality indicator
2020	27,821
2019	75,150
2018	88,482
2017	65,513
2016	40,903
Prior	132,027
Total loans	429,896	426,546
Residential First Lien | Special Review
Loan portfolio by credit quality indicator
2016	249
Total loans	249	253
Residential First Lien | Watch List - Pass
Loan portfolio by credit quality indicator
2018	144
Total loans	144	144
Residential First Lien | Watch List - Substandard
Loan portfolio by credit quality indicator
2018	624
2016	51
Total loans	675	680
Residential First Lien | Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	92
Prior	532
Total loans	624
Residential Junior Lien
Loan portfolio by credit quality indicator
2020	33,344
2019	161,204
2018	105,315
2017	128,460
2016	100,080
Prior	158,201
Total loans	686,604	706,476
Residential Junior Lien | Pass
Loan portfolio by credit quality indicator
2020	33,344
2019	161,204
2018	105,315
2017	127,651
2016	100,080
Prior	158,201
Total loans	685,795	704,958
Residential Junior Lien | Special Review
Loan portfolio by credit quality indicator
2017	809
Total loans	809	826
Consumer
Loan portfolio by credit quality indicator
2020	10,732
2019	28,354
2018	3,613
2017	558
2016	172
Prior	2,011
Total loans	45,440	47,800
Consumer | Pass
Loan portfolio by credit quality indicator
2020	10,732
2019	28,354
2018	3,613
2017	558
2016	172
Prior	2,008
Total loans	45,437	46,605
Consumer | Watch List - Doubtful
Loan portfolio by credit quality indicator
Prior	3
Total loans	3
Foreign
Loan portfolio by credit quality indicator
2020	22,915
2019	79,118
2018	17,208
2017	7,403
2016	4,614
Prior	7,924
Total loans	139,182	141,049
Foreign | Pass
Loan portfolio by credit quality indicator
2020	22,915
2019	79,118
2018	17,208
2017	7,403
2016	4,614
Prior	7,924
Total loans	$ 139,182	$ 140,785

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Junior Subordinated Deferrable Interest Debentures (Tables)

3 Months Ended

Mar. 31, 2020

Junior Subordinated Deferrable Interest Debentures

Junior subordinated deferrable interest 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	4.88	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	3.53	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	3.41	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	3.53	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	3.03	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

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

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Loans (Tables)

3 Months Ended

Mar. 31, 2020

Loans

Summary of loans, by loan type

	March 31,		December 31,
	2020		2019
	(Dollars in Thousands)
Commercial, financial and agricultural	$	3,504,826	$	3,379,837
Real estate - mortgage		1,118,192		1,140,377
Real estate - construction		2,216,740		2,185,883
Consumer		45,440		47,800
Foreign		139,182		141,049
Total loans	$	7,024,380	$	6,894,946

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Investment Securities and Equity Securities with Readily Determinable Fair Values (Unrealized and realized gains and losses recognized in net income on equity securities ) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Investment Securities and Equity Securities with Readily Determinable Fair Values
Equity Securities	$ 6,125		$ 6,095
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	30	$ 138
Unrealized gain on equity securities with readily determinable fair values	$ 30	$ 138

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Common Stock and Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended	133 Months Ended
	Apr. 03, 2020	Mar. 12, 2020	Oct. 15, 2019	Apr. 15, 2019	Apr. 30, 2009	May 05, 2020
Common Stock and Dividends
Cash dividends paid to common shareholders (in dollars per share)	$ 0.55		$ 0.55	$ 0.50
Repurchase of common stock, authorized amount		$ 50,000			$ 40,000
Period of repurchase of common stock		12 months			12 months
Cumulative number of shares repurchased under all stock repurchase programs						12,261,282
Cumulative cost of shares repurchased under all stock repurchase programs						$ 356,883

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Basis of Presentation (Details) $ in Thousands		3 Months Ended
	Jan. 01, 2020 USD ($)	Mar. 31, 2020 USD ($) segment subsidiary	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Basis of presentation
Number of operating segments | segment		1
Number of active operating bank subsidiaries | subsidiary		5
Right-of-use asset amortization		$ 320	$ 214
Retained earnings		$ 2,191,946		$ 2,200,568
ASU 2016-02
Basis of presentation
Right-of-use asset					$ 6,400
Statement of Financial Position Location					us-gaap:OtherAssets
Lease liability					$ 6,400
Statement of Financial Position Location					us-gaap:OtherLiabilities
ASU 2016-13 | Restatement Adjustment
Basis of presentation
Percentage of allowance for loan losses	17.20%
Retained earnings	$ (8,300)

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Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2020

Allowance for Credit Losses

Loans individually or collectively evaluated for their impairment and related allowance, by loan class

	Three Months Ended March 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 charged to allowance		(2,819)		—		(55)		—		(36)		—		(70)		—		(2,980)
Recoveries credited to allowance		671		—		9		—		1		103		8		—		792
Net (losses) recoveries charged to allowance		(2,148)		—		(46)		—		(35)		103		(62)		—		(2,188)
Credit loss expense		5,823		5,878		2,809		327		635		1,243		68		53		16,836
Balance at March 31,	$	19,067	$	37,421	$	15,004	$	1,758	$	2,782	$	8,452	$	323	$	466	$	85,273

	Three Months Ended March 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,	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charged to allowance		(2,764)		—		(1)		—		(1)		(6)		(63)		—		(2,835)
Recoveries credited to allowance		638		20		283		—		1		102		17		—		1,061
Net (losses) recoveries charged to allowance		(2,126)		20		282		—		—		96		(46)		—		(1,774)
Provision charged to operations		942		(354)		6,245		537		79		(70)		61		(20)		7,420
Balance at March 31,	$	11,412	$	14,789	$	25,880	$	2,345	$	3,546	$	7,745	$	462	$	851	$	67,030

	March 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	342	$	1,367,362	$	18,725
Commercial real estate: other construction & land development		936		116		2,215,804		37,305
Commercial real estate: farmland & commercial		517		—		1,932,848		15,004
Commercial real estate: multifamily		152		—		202,298		1,758
Residential: first lien		92		—		431,496		2,782
Residential: junior lien		—		—		686,604		8,452
Consumer		3		—		45,437		323
Foreign		—		—		139,182		466
Total	$	3,349	$	458	$	7,021,031	$	84,815

	December 31, 2019
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,935	$	249	$	1,290,725	$	10,895
Commercial real estate: other construction & land development		938		116		2,184,945		18,037
Commercial real estate: farmland & commercial		1,208		—		1,895,539		16,533
Commercial real estate: multifamily		165		—		190,265		1,786
Residential: first lien		6,278		—		427,623		3,762
Residential: junior lien		692		—		705,784		7,535
Consumer		1,195		—		46,605		542
Foreign		264		—		140,785		823
Total	$	12,675	$	365	$	6,882,271	$	59,913

Loans accounted on non-accrual basis, by loan class

	March 31, 2020		December 31, 2019
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	1,901
Commercial real estate: other construction & land development		936		938
Commercial real estate: farmland & commercial		517		1,208
Commercial real estate: multifamily		152		165
Residential: first lien		624		670
Residential: junior lien		—		—
Consumer		3		4
Total non-accrual loans	$	3,881	$	4,886

Impaired loans, by loan class

The following tables detail key information regarding our impaired loans by loan class at December 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	December 31, 2019
			Unpaid				Average
	Recorded		Principal		Related		Recorded		Interest
	Investment		Balance		Allowance		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	510	$	516	$	249	$	514	$	—
Commercial real estate: other construction & land development		126		169		116		131		—
Total impaired loans with related allowance	$	636	$	685	$	365	$	645	$	—

	December 31, 2019
			Unpaid		Average
	Recorded		Principal		Recorded		Interest
	Investment		Balance		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	1,425	$	1,516	$	18,794	$	2
Commercial real estate: other construction & land development		812		1,133		1,737		—
Commercial real estate: farmland & commercial		1,208		1,841		22,357		—
Commercial real estate: multifamily		165		168		651		—
Residential: first lien		6,278		6,445		6,988		309
Residential: junior lien		692		692		1,023		42
Consumer		1,195		1,196		1,117		—
Foreign		264		264		278		12
Total impaired loans with no related allowance	$	12,039	$	13,255	$	52,945	$	365

The following table details key information regarding our impaired loans by loan class at March 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	1,325	$	1,908
Commercial real estate: other construction & land development		134		169
Commercial real estate: farmland & commercial		24,463		24,774
Total impaired loans with related allowance	$	25,922	$	26,851

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	17,370	$	1
Commercial real estate: other construction & land development		1,924		—
Commercial real estate: farmland & commercial		2,305		—
Commercial real estate: multifamily		506		—
Residential: first lien		6,239		75
Residential: junior lien		912		11
Consumer		1,075		—
Foreign		288		3
Total impaired loans with no related allowance	$	30,619	$	90

Loans accounted for as trouble debt restructuring, by Watch List Doubtful loans

	March 31, 2020		December 31, 2019
		(Dollars in Thousands)
Domestic
Commercial	$	—	$	32
Residential: first lien		3,857		5,608
Residential: junior lien		680		692
Consumer		1,217		1,192
Foreign		256		264
Total troubled debt restructuring	$	6,010	$	7,788

Information regarding the aging of past due loans, by loan class

	March 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	$	4,226	$	776	$	1,949	$	997	$	6,951	$	1,362,060	$	1,369,011
Commercial real estate: other construction & land development		8,953		1,479		145		145		10,577		2,206,163		2,216,740
Commercial real estate: farmland & commercial		22,566		1,543		47,658		47,658		71,767		1,861,598		1,933,365
Commercial real estate: multifamily		124		—		11		—		135		202,315		202,450
Residential: first lien		4,726		1,326		3,624		3,164		9,676		421,912		431,588
Residential: junior lien		1,509		513		1,173		1,173		3,195		683,409		686,604
Consumer		717		166		60		60		943		44,497		45,440
Foreign		3,466		482		1		1		3,949		135,233		139,182
Total past due loans	$	46,287	$	6,285	$	54,621	$	53,198	$	107,193	$	6,917,187	$	7,024,380

	December 31, 2019
							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	$	3,134	$	626	$	1,292	$	421	$	5,052	$	1,287,608	$	1,292,660
Commercial real estate: other construction & land development		509		55		—		—		564		2,185,319		2,185,883
Commercial real estate: farmland & commercial		8,058		2,031		54,928		54,878		65,017		1,831,730		1,896,747
Commercial real estate: multifamily		313		—		165		—		478		189,952		190,430
Residential: first lien		3,229		1,670		3,660		3,107		8,559		425,342		433,901
Residential: junior lien		1,112		477		1,200		1,200		2,789		703,687		706,476
Consumer		467		75		88		88		630		47,170		47,800
Foreign		1,347		3		11		11		1,361		139,688		141,049
Total past due loans	$	18,169	$	4,937	$	61,344	$	59,705	$	84,450	$	6,810,496	$	6,894,946

Summary of the loan portfolio by credit quality indicator, by loan class

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at March 31, 2020
Domestic
Commercial
Pass	$	245,351	$	533,082	$	270,142	$	145,268	$	22,269	$	13,917	$	1,230,029
Special Review		—		71,700		—		—		—		—		71,700
Watch List - Pass		—		11		—		—		—		26		37
Watch List - Substandard		62,569		2,517		504		6		—		—		65,596
Watch List - Doubtful		353		608		455		229		4		—		1,649
Total Commercial	$	308,273	$	607,918	$	271,101	$	145,503	$	22,273	$	13,943	$	1,369,011
Commercial real estate: other construction & land development
Pass	$	136,898	$	1,064,250	$	624,498	$	238,744	$	41,536	$	17,556	$	2,123,482
Special Review		—		16,106		—		—		—		—		16,106
Watch List - Pass		8,000		35,622		370		—		—		—		43,992
Watch List - Substandard		275		31,804		—		—		145		—		32,224
Watch List - Doubtful		—		812		124		—		—		—		936
Total Commercial real estate: other construction & land development	$	145,173	$	1,148,594	$	624,992	$	238,744	$	41,681	$	17,556	$	2,216,740
Commercial real estate: farmland & commercial
Pass	$	139,114	$	675,730	$	385,302	$	203,811	$	132,509	$	215,389	$	1,751,855
Special Review		938		—		4,649		175		3,205		421		9,388
Watch List - Pass		16,713		5,956		2,648		124		587		1		26,029
Watch List - Substandard		1,668		52,471		—		2,348		85,594		3,495		145,576
Watch List - Doubtful		—		243		—		41		—		233		517
Total Commercial real estate: farmland & commercial	$	158,433	$	734,400	$	392,599	$	206,499	$	221,895	$	219,539	$	1,933,365
Commercial real estate: multifamily
Pass	$	10,623	$	58,886	$	38,954	$	64,640	$	14,660	$	14,535	$	202,298
Watch List - Doubtful		141		—		—		—		—		11		152
Total Commercial real estate: multifamily	$	10,764	$	58,886	$	38,954	$	64,640	$	14,660	$	14,546	$	202,450
Residential: first lien
Pass	$	27,821	$	75,150	$	88,482	$	65,513	$	40,903	$	132,027	$	429,896
Special Review		—		—		—		—		249		—		249
Watch List - Pass		—		—		144		—		—		—		144
Watch List - Substandard		—		—		624		—		51		—		675
Watch List - Doubtful		92		—		—		—		—		532		624
Total Residential: first lien	$	27,913	$	75,150	$	89,250	$	65,513	$	41,203	$	132,559	$	431,588
Residential: junior lien
Pass	$	33,344	$	161,204	$	105,315	$	127,651	$	100,080	$	158,201	$	685,795
Special Review		—		—		—		809		—		—		809
Total Residential: junior lien	$	33,344	$	161,204	$	105,315	$	128,460	$	100,080	$	158,201	$	686,604
Consumer
Pass	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,008	$	45,437
Watch List - Doubtful		—		—		—		—		—		3		3
Total Consumer	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,011	$	45,440
Foreign
Pass	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Foreign	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Loans	$	717,547	$	2,893,624	$	1,543,032	$	857,320	$	446,578	$	566,279	$	7,024,380

			December 31, 2019
			Special		Watch		Watch List—		Watch List—
	Pass		Review		List—Pass		Substandard		Impaired
			(Dollars in Thousands)
Domestic
Commercial	$	1,228,110	$	569	$	39	$	62,007	$	1,935
Commercial real estate: other construction & land development		2,090,370		18,721		41,949		33,905		938
Commercial real estate: farmland & commercial		1,710,446		13,184		20,183		151,726		1,208
Commercial real estate: multifamily		190,265		—		—		—		165
Residential: first lien		426,546		253		144		680		6,278
Residential: junior lien		704,958		826		—		—		692
Consumer		46,605		—		—		—		1,195
Foreign		140,785		—		—		—		264
Total	$	6,538,085	$	33,553	$	62,315	$	248,318	$	12,675

The increase in Special Review Commercial loans at March 31, 2020 can be attributed to the movement of a relationship in the oil and gas production business from the Pass category.

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Investment Securities and Equity Securities with Readily Determinable Fair Values (Fair Value and Gross Unrealized Loss) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available for sale:
Fair value, less than 12 months	$ 7,906	$ 523,797
Unrealized losses, less than 12 Months	(188)	(2,274)
Fair value, 12 months or more	361	1,448,109
Unrealized losses, 12 Months or More	(3)	(14,340)
Fair value, Total	8,267	1,971,906
Unrealized losses, Total	(191)	(16,614)
Residential mortgage-backed securities
Available for sale:
Fair value, less than 12 months	7,144	523,031
Unrealized losses, less than 12 Months	(179)	(2,269)
Fair value, 12 months or more	361	1,448,109
Unrealized losses, 12 Months or More	(3)	(14,340)
Fair value, Total	7,505	1,971,140
Unrealized losses, Total	(182)	(16,609)
Obligations of states and political subdivisions
Available for sale:
Fair value, less than 12 months	762	766
Unrealized losses, less than 12 Months	(9)	(5)
Fair value, Total	762	766
Unrealized losses, Total	$ (9)	$ (5)

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Junior Subordinated Deferrable Interest Debentures (Key Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 134,642	$ 134,642
Trust VIII
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,774
Interest rate (as a percent)	4.88%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	3.05%
Trust IX
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 41,238
Interest rate (as a percent)	3.53%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust X
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 21,021
Interest rate (as a percent)	3.41%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.65%
Trust XI
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,990
Interest rate (as a percent)	3.53%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust XII
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 20,619
Interest rate (as a percent)	3.03%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.45%

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Consolidated Statements of Condition - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 354,708	$ 256,820
Investment securities:
Held to maturity debt securities (Market value of $2,400 on March 31, 2020 and 2,400 on December 31, 2019)	2,400	2,400
Available for sale debt securities (Amortized cost of $3,512,611 on March 31, 2020 and $3,376,070 on December 31, 2019)	3,594,514	3,378,923
Equity securities with readily determinable fair values	6,125	6,095
Total investment securities	3,603,039	3,387,418
Loans	7,024,380	6,894,946
Less allowance for credit losses	(85,273)	(60,278)
Net loans	6,939,107	6,834,668
Bank premises and equipment, net	494,697	506,595
Accrued interest receivable	37,070	36,620
Other investments	298,852	318,427
Cash surrender value of life insurance policies	291,485	289,693
Goodwill	282,532	282,532
Other assets	204,919	200,121
Total assets	12,506,409	12,112,894
Deposits:
Demand-non-interest bearing	3,664,839	3,545,905
Savings and interest bearing demand	3,289,956	3,267,829
Time	2,055,093	2,012,300
Total deposits	9,009,888	8,826,034
Securities sold under repurchase agreements	266,472	236,536
Other borrowed funds	728,465	626,511
Junior subordinated deferrable interest debentures	134,642	134,642
Other liabilities	224,431	171,118
Total liabilities	10,363,898	9,994,841
Shareholders' equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,225,516 shares on March 31, 2020 and 96,214,9679 shares on December 31, 2019	96,226	96,215
Surplus	148,508	148,075
Retained earnings	2,191,946	2,200,568
Accumulated other comprehensive income	64,352	2,345
Total shareholders' equity before treasury stock	2,501,032	2,447,203
Less cost of shares in treasury, 32,215,675 shares on March 31, 2020 and 31,015,061 on December 31, 2019	(358,521)	(329,150)
Total shareholders' equity	2,142,511	2,118,053
Total liabilities and shareholders' equity	$ 12,506,409	$ 12,112,894

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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Consolidated Statements of Comprehensive Income
Net unrealized holding gains (losses) on securities available for sale arising during period, tax effects	$ 16,482	$ 6,706
Reclassification adjustment for losses on securities available for sale included in net income, tax effects	$ 1	$ 1

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Investment Securities and Equity Securities with Readily Determinable Fair Values

3 Months Ended

Mar. 31, 2020

Investment Securities and Equity Securities with Readily Determinable Fair Values

Investment Securities and Equity Securities with Readily Determinable Fair Values

Note 6 — Investment Securities and Equity Securities with Readily Determinable Fair Values

We classify debt securities into one of three categories: held-to maturity, available-for-sale, or trading. Such debt securities are reassessed for appropriate classification at each reporting date. Securities classified as “held-to-maturity” are carried at amortized cost for financial statement reporting, while securities classified as “available-for-sale” and “trading” 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 accumulated other comprehensive income (loss) until realized, or in the case of losses, when deemed other than temporary. 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 should 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 must be recognized in earnings. We have evaluated the debt securities classified as available-for-sale and held-to-maturity at March 31, 2020 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 March 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	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

	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	$	3,441,216	$	79,298	$	(182)	$	3,520,332	$	3,520,332
Obligations of states and political subdivisions		71,395		2,796		(9)		74,182		74,182
Total investment securities	$	3,512,611	$	82,094	$	(191)	$	3,594,514	$	3,594,514

(1) Included in the carrying value of residential mortgage-backed securities are $548,581 of mortgage-backed securities issued by Ginnie Mae and $2,971,751 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, 2019 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,285,623	$	16,534	$	(16,609)	$	3,285,548	$	3,285,548
Obligations of states and political subdivisions		90,447		2,933		(5)		93,375		93,375
Total investment securities	$	3,376,070	$	19,467	$	(16,614)	$	3,378,923	$	3,378,923

(1) Included in the carrying value of residential mortgage-backed securities are $521,247 of mortgage-backed securities issued by Ginnie Mae and $2,714,301 of mortgage-backed securities issued by Fannie Mae and Freddie.

The amortized cost and estimated fair value of investment securities at March 31, 2020, 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	$	1,200	$	1,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		355		356
Due after ten years		—		—		71,040		73,826
Residential mortgage-backed securities		—		—		3,441,216		3,520,332
Total investment securities	$	2,400	$	2,400	$	3,512,611	$	3,594,514

Residential mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), Federal National Mortgage Association (“Fannie Mae”), or 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 early September 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.

The amortized cost and fair value of available-for-sale debt investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $997,342,000 and $1,020,890,000, respectively, at March 31, 2020.

Proceeds from the sale and calls of debt securities available-for-sale were $18,920,000 for the three months ended March 31, 2020, which included $0 of mortgage-backed securities. Gross gains of $0 and gross losses of $5 were realized on the sales and calls for the three months ended March 31, 2020. Proceeds from the sale and call of debt securities available-for-sale were $41,420,000 for the three months ended March 31, 2019, which included $0 of mortgage-backed securities. Gross gains of $2 and gross losses of $6 were realized on the sales and calls for the three months ended March 31, 2019, respectively.

Gross unrealized losses on debt investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual debt securities have been in a continuous unrealized loss position at March 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	$	7,144	$	(179)	$	361	$	(3)	$	7,505	$	(182)
Obligations of states and political subdivisions		762		(9)		—		—		762		(9)
	$	7,906	$	(188)	$	361	$	(3)	$	8,267	$	(191)

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, 2019 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	$	523,031	$	(2,269)	$	1,448,109	$	(14,340)	$	1,971,140	$	(16,609)
Obligations of states and political subdivisions		766		(5)		—		—		766		(5)
	$	523,797	$	(2,274)	$	1,448,109	$	(14,340)	$	1,971,906	$	(16,614)

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 will more than likely 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 March 31, 2020 and December 31, 2019, the balance in equity securities with readily determinable fair values recorded at fair value were $6,125,000 and $6,095,000, respectively. The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three months ended March 31, 2020 and the three months ended March 31, 2019:

	Three Months Ended
	March 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	30
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	30

	Three Months Ended
	March 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	138
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	138

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Fair Value Measurements

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Fair Value Measurements

Note 2 — Fair Value Measurements

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 inputs, 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 assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of March 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
	March 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	3,520,332	$	—	$	3,520,332	$	—
States and political subdivisions		74,182		—		74,182		—
Equity Securities		6,125		6,125		—		—
	$	3,600,639	$	6,125	$	3,594,514	$	—

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of December 31, 2019 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, 2019		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,285,548	$	—	$	3,285,548	$	—
States and political subdivisions		93,375		—		93,375		—
Equity Securities		6,095		6,095		—		—
	$	3,385,018	$	6,095	$	3,378,923	$	—

Available-for-sale debt securities are classified within Level 2 of the valuation hierarchy. Equity securities with readily determinable fair values are classified within Level 1. For debt investments 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 assets and financial liabilities are measured at fair value on a non-recurring basis. The instruments 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 March 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 for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	March 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	254	$	—	$	—	$	254	$	93
Other real estate owned		2,581		—		—		2,581		537

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2019 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
	2019		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Impaired loans	$	826	$	—	$	—	$	826	$	43
Other real estate owned		21,614		—		—		21,614		322
Equity investments without readily determinable fair values		28,166		—		—		28,166		4,775

Our assets measured at fair value on a non-recurring basis at March 31, 2020 are limited to loans classified as Watch List – Doubtful and other real estate owned. At December 31, 2019, asset measured at fair value on a non-recurring basis also included an equity investment without a readily determinable fair value. 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 allowance for credit losses. 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 March 31, 2020, we had $1,935,000 of doubtful commercial collateral dependent loans, of which $577,000 had an appraisal performed within the immediately preceding twelve months, and of which $812,000 had an evaluation performed within the immediately preceding twelve months. As of December 31, 2019, we had approximately $2,955,000 of impaired commercial collateral dependent loans, of which $1,426,000 had an appraisal performed within the immediately preceding twelve months and of which $847,000 had an evaluation performed within the immediately preceding twelve months.

Our 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 impaired 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 allowance for credit 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 three months ended March 31, 2020 and the twelve months ended December 31, 2019, we recorded $4,000 and $9,611,000, respectively, in charges to the allowance for credit losses in connection with loans transferred to other real estate owned. For the three months ended March 31, 2020 and the twelve months ended December 31, 2019, we recorded $537,000 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 March 31, 2020 and December 31, 2019 are outlined below.

Cash and Cash Equivalents

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

Time Deposits with Banks

The carrying amounts of time deposits with banks approximate fair value.

Investment Securities Held-to-Maturity

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

Investment Securities

For investment securities, which 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 6.

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 March 31, 2020 and December 31, 2019, the carrying amount of fixed-rate performing loans was $1,454,099,000 and $1,503,811,000, respectively, and the estimated fair value was $1,379,125,000 and $1,481,239,000, 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 March 31, 2020 and December 31, 2019. The fair value of time deposits is based on the discounted value of contractual cashflows. The discount rate is based on currently offered rates. Time deposits are within Level 3 of the fair value hierarchy. At March 31, 2020 and December 31, 2019, the carrying amount of time deposits was $2,055,093,000 and $2,012,300,000, respectively, and the estimated fair value was $2,047,202,000 and $2,011,950,000, respectively.

Securities Sold Under Repurchase Agreements

Securities sold under repurchase agreements include short- and long-term maturities. Due to the contractual terms of the short-term instruments, the carrying amounts approximated fair value at March 31, 2020 and December 31, 2019.

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 March 31, 2020 and December 31, 2019.

Other Borrowed Funds

We currently have short- and long-term borrowings issued from the Federal Home Loan Bank (“FHLB”). Due to the contractual terms of the short-term borrowings, the carrying amounts approximated fair value at March 31, 2020 and December 31, 2019. The long-term borrowings outstanding at March 31, 2020 and December 31, 2019 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 March 31, 2020 and December 31, 2019, the carrying amount of the fixed rate long-term FHLB borrowings was $436,465,000 and $436,511,000, respectively, and the estimated fair value was $498,716,000 and $465,017,000, 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 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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Commitments, Contingent Liabilities and Other Tax Matters

3 Months Ended

Mar. 31, 2020

Commitments, Contingent Liabilities and Other Tax Matters

Commitments, Contingent Liabilities and Other Tax Matters

Note 10 — Commitments and Contingent Liabilities and Other Tax Matters

We are involved in various legal proceedings that are in various stages of litigation. We have determined, based on discussions with its 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. 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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Allowance for Credit Losses (By Loan Class) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Allowance for probable loan losses
Balance at the beginning of the period	$ 60,278	$ 61,384
Losses charged to allowance	(2,980)	(2,835)
Recoveries credited to allowance	792	1,061
Net losses (recoveries) charged to allowance	(2,188)	(1,774)
Provision for credit loss expenses	16,836	7,420
Balance at the end of the period	85,273	67,030
Watch - List Impaired
Allowance for probable loan losses
Losses charged to allowance		(9,500)
Commercial
Allowance for probable loan losses
Balance at the beginning of the period	11,145	12,596
Losses charged to allowance	(2,819)	(2,764)
Recoveries credited to allowance	671	638
Net losses (recoveries) charged to allowance	(2,148)	(2,126)
Provision for credit loss expenses	5,823	942
Balance at the end of the period	19,067	11,412
Real estate - construction
Allowance for probable loan losses
Balance at the beginning of the period	18,152	15,123
Recoveries credited to allowance		20
Net losses (recoveries) charged to allowance		20
Provision for credit loss expenses	5,878	(354)
Balance at the end of the period	37,421	14,789
Commercial Real Estate: Farmland and Commercial
Allowance for probable loan losses
Balance at the beginning of the period	16,533	19,353
Losses charged to allowance	(55)	(1)
Recoveries credited to allowance	9	283
Net losses (recoveries) charged to allowance	(46)	282
Provision for credit loss expenses	2,809	6,245
Balance at the end of the period	15,004	25,880
Commercial Real Estate: Multifamily
Allowance for probable loan losses
Balance at the beginning of the period	1,786	1,808
Provision for credit loss expenses	327	537
Balance at the end of the period	1,758	2,345
Residential First Lien
Allowance for probable loan losses
Balance at the beginning of the period	3,762	3,467
Losses charged to allowance	(36)	(1)
Recoveries credited to allowance	1	1
Net losses (recoveries) charged to allowance	(35)
Provision for credit loss expenses	635	79
Balance at the end of the period	2,782	3,546
Residential Junior Lien
Allowance for probable loan losses
Balance at the beginning of the period	7,535	7,719
Losses charged to allowance		(6)
Recoveries credited to allowance	103	102
Net losses (recoveries) charged to allowance	103	96
Provision for credit loss expenses	1,243	(70)
Balance at the end of the period	8,452	7,745
Consumer
Allowance for probable loan losses
Balance at the beginning of the period	542	447
Losses charged to allowance	(70)	(63)
Recoveries credited to allowance	8	17
Net losses (recoveries) charged to allowance	(62)	(46)
Provision for credit loss expenses	68	61
Balance at the end of the period	323	462
Foreign
Allowance for probable loan losses
Balance at the beginning of the period	823	871
Provision for credit loss expenses	53	(20)
Balance at the end of the period	466	$ 851
ASU 2016-13 | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	10,347
ASU 2016-13 | Commercial | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	4,247
ASU 2016-13 | Real estate - construction | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	13,391
ASU 2016-13 | Commercial Real Estate: Farmland and Commercial | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	(4,292)
ASU 2016-13 | Commercial Real Estate: Multifamily | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	(355)
ASU 2016-13 | Residential First Lien | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	(1,580)
ASU 2016-13 | Residential Junior Lien | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	(429)
ASU 2016-13 | Consumer | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	(225)
ASU 2016-13 | Foreign | Restatement Adjustment
Allowance for probable loan losses
Balance at the beginning of the period	$ (410)

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Allowance for Credit Losses (Aging By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	$ 53,198	$ 59,705
Past due	107,193	84,450
Loans, current	6,917,187	6,810,496
Total loans	7,024,380	6,894,946
30 to 59 Days
Financing receivable recorded investment
Past due	46,287	18,169
60 to 89 Days
Financing receivable recorded investment
Past due	6,285	4,937
90 Days or Greater
Financing receivable recorded investment
Past due	54,621	61,344
Commercial
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	997	421
Past due	6,951	5,052
Loans, current	1,362,060	1,287,608
Total loans	1,369,011	1,292,660
Commercial | 30 to 59 Days
Financing receivable recorded investment
Past due	4,226	3,134
Commercial | 60 to 89 Days
Financing receivable recorded investment
Past due	776	626
Commercial | 90 Days or Greater
Financing receivable recorded investment
Past due	1,949	1,292
Real estate - construction
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	145
Past due	10,577	564
Loans, current	2,206,163	2,185,319
Total loans	2,216,740	2,185,883
Real estate - construction | 30 to 59 Days
Financing receivable recorded investment
Past due	8,953	509
Real estate - construction | 60 to 89 Days
Financing receivable recorded investment
Past due	1,479	55
Real estate - construction | 90 Days or Greater
Financing receivable recorded investment
Past due	145
Commercial Real Estate: Farmland and Commercial
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	47,658	54,878
Past due	71,767	65,017
Loans, current	1,861,598	1,831,730
Total loans	1,933,365	1,896,747
Commercial Real Estate: Farmland and Commercial | 30 to 59 Days
Financing receivable recorded investment
Past due	22,566	8,058
Commercial Real Estate: Farmland and Commercial | 60 to 89 Days
Financing receivable recorded investment
Past due	1,543	2,031
Commercial Real Estate: Farmland and Commercial | 90 Days or Greater
Financing receivable recorded investment
Past due	47,658	54,928
Commercial Real Estate: Multifamily
Financing receivable recorded investment
Past due	135	478
Loans, current	202,315	189,952
Total loans	202,450	190,430
Commercial Real Estate: Multifamily | 30 to 59 Days
Financing receivable recorded investment
Past due	124	313
Commercial Real Estate: Multifamily | 90 Days or Greater
Financing receivable recorded investment
Past due	11	165
Residential First Lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	3,164	3,107
Past due	9,676	8,559
Loans, current	421,912	425,342
Total loans	431,588	433,901
Residential First Lien | 30 to 59 Days
Financing receivable recorded investment
Past due	4,726	3,229
Residential First Lien | 60 to 89 Days
Financing receivable recorded investment
Past due	1,326	1,670
Residential First Lien | 90 Days or Greater
Financing receivable recorded investment
Past due	3,624	3,660
Residential Junior Lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	1,173	1,200
Past due	3,195	2,789
Loans, current	683,409	703,687
Total loans	686,604	706,476
Residential Junior Lien | 30 to 59 Days
Financing receivable recorded investment
Past due	1,509	1,112
Residential Junior Lien | 60 to 89 Days
Financing receivable recorded investment
Past due	513	477
Residential Junior Lien | 90 Days or Greater
Financing receivable recorded investment
Past due	1,173	1,200
Consumer
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	60	88
Past due	943	630
Loans, current	44,497	47,170
Total loans	45,440	47,800
Consumer | 30 to 59 Days
Financing receivable recorded investment
Past due	717	467
Consumer | 60 to 89 Days
Financing receivable recorded investment
Past due	166	75
Consumer | 90 Days or Greater
Financing receivable recorded investment
Past due	60	88
Foreign
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	1	11
Past due	3,949	1,361
Loans, current	135,233	139,688
Total loans	139,182	141,049
Foreign | 30 to 59 Days
Financing receivable recorded investment
Past due	3,466	1,347
Foreign | 60 to 89 Days
Financing receivable recorded investment
Past due	482	3
Foreign | 90 Days or Greater
Financing receivable recorded investment
Past due	$ 1	$ 11

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Fair Value Measurements (Fair Value Measurement and Assumptions) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Assets:
Impaired Loans	$ 1,935	$ 2,955
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Impaired commercial collateral dependent receivables appraisals to determine fair value within immediately preceding twelve months	577	1,426
Impaired collateral dependent commercial loans with internal evaluation completed within last twelve months	812	847
Charges to allowance for probable loan losses in connection with other real estate owned	4	9,611
Adjustment to fair value in connection with other real estate owned	537	322
Measured on a non-recurring basis
Non-financial assets:
Equity investments without readily determinable fair values		4,775
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Change in net provision, impaired loans		43
Change in net provision, other real estate owned	537	322
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Impaired Loans		826
Non-financial assets:
Other real estate owned	2,581	21,614
Equity investments without readily determinable fair values		28,166
Measured on a non-recurring basis | Assets/liabilities measured at fair value
Assets:
Impaired Loans		826
Non-financial assets:
Other real estate owned	2,581	21,614
Equity investments without readily determinable fair values		$ 28,166
Watch List - Doubtful | Measured on a non-recurring basis
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Change in net provision, impaired loans	93
Watch List - Doubtful | Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Impaired Loans	254
Watch List - Doubtful | Measured on a non-recurring basis | Assets/liabilities measured at fair value
Assets:
Impaired Loans	$ 254

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Investment Securities and Equity Securities with Readily Determinable Fair Values (Tables)

3 Months Ended

Mar. 31, 2020

Investment Securities and Equity Securities with Readily Determinable Fair Values

Amortized cost and estimated fair value by type of investment security

The amortized cost and estimated fair value by type of investment security at March 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	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

	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	$	3,441,216	$	79,298	$	(182)	$	3,520,332	$	3,520,332
Obligations of states and political subdivisions		71,395		2,796		(9)		74,182		74,182
Total investment securities	$	3,512,611	$	82,094	$	(191)	$	3,594,514	$	3,594,514

(1) Included in the carrying value of residential mortgage-backed securities are $548,581 of mortgage-backed securities issued by Ginnie Mae and $2,971,751 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, 2019 are as follows:

	Held to Maturity
			Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Carrying
	cost		gains		losses		fair value		value
	(Dollars in Thousands)
Other securities	$	2,400	$	—	$	—	$	2,400	$	2,400
Total investment securities	$	2,400	$	—	$	—	$	2,400	$	2,400

	Available for Sale
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair		Carrying
	cost		gains		losses		value		value(1)
	(Dollars in Thousands)
Residential mortgage-backed securities	$	3,285,623	$	16,534	$	(16,609)	$	3,285,548	$	3,285,548
Obligations of states and political subdivisions		90,447		2,933		(5)		93,375		93,375
Total investment securities	$	3,376,070	$	19,467	$	(16,614)	$	3,378,923	$	3,378,923

(1) Included in the carrying value of residential mortgage-backed securities are $521,247 of mortgage-backed securities issued by Ginnie Mae and $2,714,301 of mortgage-backed securities issued by Fannie Mae and Freddie.

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	$	1,200	$	1,200	$	—	$	—
Due after one year through five years		1,200		1,200		—		—
Due after five years through ten years		—		—		355		356
Due after ten years		—		—		71,040		73,826
Residential mortgage-backed securities		—		—		3,441,216		3,520,332
Total investment securities	$	2,400	$	2,400	$	3,512,611	$	3,594,514

Gross unrealized losses on investment securities and the related fair value

Gross unrealized losses on debt investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual debt securities have been in a continuous unrealized loss position at March 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	$	7,144	$	(179)	$	361	$	(3)	$	7,505	$	(182)
Obligations of states and political subdivisions		762		(9)		—		—		762		(9)
	$	7,906	$	(188)	$	361	$	(3)	$	8,267	$	(191)

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, 2019 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	$	523,031	$	(2,269)	$	1,448,109	$	(14,340)	$	1,971,140	$	(16,609)
Obligations of states and political subdivisions		766		(5)		—		—		766		(5)
	$	523,797	$	(2,274)	$	1,448,109	$	(14,340)	$	1,971,906	$	(16,614)

Summary of unrealized and realized gains and losses recognized in net income on equity securities

	Three Months Ended
	March 31, 2020
	(Dollars in Thousands)
Net gains recognized during the period on equity securities	$	30
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	30

	Three Months Ended
	March 31, 2019
	(Dollars in Thousands)
Net losses recognized during the period on equity securities	$	138
Less: Net gains and (losses) recognized during the period on equity securities sold during the period		—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	138

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of March 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
	March 31, 2020		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale debt securities
Residential mortgage-backed securities	$	3,520,332	$	—	$	3,520,332	$	—
States and political subdivisions		74,182		—		74,182		—
Equity Securities		6,125		6,125		—		—
	$	3,600,639	$	6,125	$	3,594,514	$	—

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of December 31, 2019 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, 2019		(Level 1)		(Level 2)		(Level 3)
Measured on a recurring basis:
Assets:
Available for sale securities
Residential mortgage - backed securities	$	3,285,548	$	—	$	3,285,548	$	—
States and political subdivisions		93,375		—		93,375		—
Equity Securities		6,095		6,095		—		—
	$	3,385,018	$	6,095	$	3,378,923	$	—

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 March 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 for		Other		Significant		Net Provision
	Period ended		Identical		Observable		Unobservable		(Credit)
	March 31,		Assets		Inputs		Inputs		During
	2020		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Watch-List doubtful loans	$	254	$	—	$	—	$	254	$	93
Other real estate owned		2,581		—		—		2,581		537

The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2019 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
	2019		(Level 1)		(Level 2)		(Level 3)		Period
Measured on a non-recurring basis:
Assets:
Impaired loans	$	826	$	—	$	—	$	826	$	43
Other real estate owned		21,614		—		—		21,614		322
Equity investments without readily determinable fair values		28,166		—		—		28,166		4,775

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Investment Securities and Equity Securities with Readily Determinable Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Held-to-maturity securities
Amortized cost	$ 2,400	$ 2,400
Estimated fair value	2,400	2,400
Carrying Value	2,400	2,400
Available-for-sale securities
Amortized cost	3,512,611	3,376,070
Available for sale debt securities	3,594,514	3,378,923
Total Amortized cost	3,512,611	3,376,070
Total Gross unrealized gains	82,094	19,467
Total Gross unrealized losses	191	16,614
Assets/liabilities measured at fair value
Available-for-sale securities
Available for sale debt securities and equity securities	3,594,514	3,378,923
Carrying Value
Available-for-sale securities
Available for sale debt securities and equity securities	3,594,514	3,378,923
Residential mortgage-backed securities
Available-for-sale securities
Amortized cost	3,441,216	3,285,623
Gross unrealized gains	79,298	16,534
Gross unrealized losses	(182)	(16,609)
Residential mortgage-backed securities | Assets/liabilities measured at fair value
Available-for-sale securities
Available for sale debt securities	3,520,332	3,285,548
Residential mortgage-backed securities | Carrying Value
Available-for-sale securities
Available for sale debt securities	3,520,332	3,285,548
Mortgage-backed securities by Ginnie Mae
Available-for-sale securities
Available for sale debt securities	548,581	521,247
Mortgage-backed securities by Fannie Mae and Freddie Mac
Available-for-sale securities
Available for sale debt securities	2,971,751	2,714,301
Obligations of states and political subdivisions
Available-for-sale securities
Amortized cost	71,395	90,447
Gross unrealized gains	2,796	2,933
Gross unrealized losses	(9)	(5)
Obligations of states and political subdivisions | Assets/liabilities measured at fair value
Available-for-sale securities
Available for sale debt securities	74,182	93,375
Obligations of states and political subdivisions | Carrying Value
Available-for-sale securities
Available for sale debt securities	74,182	93,375
Other securities
Held-to-maturity securities
Amortized cost	2,400	2,400
Estimated fair value	2,400	2,400
Carrying Value	$ 2,400	$ 2,400

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Other Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank advances
Other borrowed funds	$ 728,465	$ 626,511
Percentage of increase in other borrowed funds	(16.30%)

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Capital Ratio (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Capital Requirements
CET 1 ratio	18.23%	18.58%
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	20.36%	20.46%
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.45%	19.80%
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	16.03%	16.65%
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

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Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Consolidated Statements of Shareholders' Equity
Cash Dividends (in dollars per share)	$ 0.55	$ 0.50
Purchase of treasury stock (in shares)	1,200,614	1,305

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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income:
Loans, including fees	$ 99,230	$ 102,805
Investment securities:
Taxable	16,488	19,300
Tax-exempt	766	1,649
Other interest income	128	309
Total interest income	116,612	124,063
Interest expense:
Savings deposits	3,235	4,243
Time deposits	5,970	4,378
Securities sold under repurchase agreements	465	589
Other borrowings	2,826	3,494
Junior subordinated deferrable interest debentures	1,273	1,950
Total interest expense	13,769	14,654
Net interest income	102,843	109,409
Provision for credit loss expenses	16,836	7,420
Net interest income after provision for credit losses	86,007	101,989
Non-interest income:
Investment securities transactions, net	(5)	(4)
Other investments, net	(231)	3,948
Other income	4,809	2,540
Total non-interest income	35,130	36,129
Non-interest expense:
Employee compensation and benefits	36,330	36,409
Occupancy	6,899	6,377
Depreciation of bank premises and equipment	7,109	6,981
Professional fees	3,970	3,592
Deposit insurance assessments		783
Net expense, other real estate owned	3,002	995
Advertising	1,984	2,082
Software and software maintenance	4,491	4,497
Other	13,197	11,235
Total non-interest expense	76,982	72,951
Income before income taxes	44,155	65,167
Provision for income taxes	9,317	13,261
Net income	$ 34,838	$ 51,906
Basic earnings per common share:
Weighted average number of shares outstanding (in shares)	65,070,589	65,617,977
Net income (in dollars per share)	$ 0.54	$ 0.79
Fully diluted earnings per common share:
Weighted average number of shares outstanding (in shares)	65,228,824	65,831,162
Net income (in dollars per share)	$ 0.53	$ 0.79
Services charges on deposit accounts
Non-interest income:
Service charges	$ 17,637	$ 17,260
Other service charges, commissions and fees, Banking
Non-interest income:
Service charges	11,166	10,876
Other service charges, commissions and fees, Non-banking
Non-interest income:
Service charges	$ 1,754	$ 1,509

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Fair Value Measurements (Other Assumptions) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deposits
Carrying amount of time deposits	$ 2,055,093	$ 2,012,300
Significant Unobservable Inputs (Level 3)
Loans
Carrying amount of fixed rate performing loans	1,454,099	1,503,811
Estimated fair value of fixed rate performing loans	1,379,125	1,481,239
Deposits
Carrying amount of time deposits	2,055,093	2,012,300
Estimated fair value of time deposits	2,047,202	2,011,950
Significant Other Observable Inputs (Level 2)
Other borrowed funds
Carrying amount of the long-term FHLB borrowings	436,465	436,511
Estimated fair value of long-term FHLB borrowings	$ 498,716	$ 465,017

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Allowance for Credit Losses (Non-accrual Basis By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 3,881	$ 4,886
Commercial
Loan loss allowances, financing receivable past due
Non-accrual loans, total	1,649	1,901
Real estate - construction
Loan loss allowances, financing receivable past due
Non-accrual loans, total	936	938
Commercial Real Estate: Farmland and Commercial
Loan loss allowances, financing receivable past due
Non-accrual loans, total	517	1,208
Commercial Real Estate: Multifamily
Loan loss allowances, financing receivable past due
Non-accrual loans, total	152	165
Residential First Lien
Loan loss allowances, financing receivable past due
Non-accrual loans, total	624	670
Consumer
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 3	$ 4

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Allowance for Credit Losses (Portfolio Credit Quality By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loan portfolio by credit quality indicator
Portfolio, total	$ 7,024,380	$ 6,894,946
Pass
Loan portfolio by credit quality indicator
Portfolio, total		6,538,085
Special Review
Loan portfolio by credit quality indicator
Portfolio, total		33,553
Watch List - Pass
Loan portfolio by credit quality indicator
Portfolio, total		62,315
Watch List - Substandard
Loan portfolio by credit quality indicator
Portfolio, total		248,318
Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		12,675
Commercial
Loan portfolio by credit quality indicator
Portfolio, total	1,369,011	1,292,660
Commercial | Pass
Loan portfolio by credit quality indicator
Portfolio, total	1,230,029	1,228,110
Commercial | Special Review
Loan portfolio by credit quality indicator
Portfolio, total	71,700	569
Commercial | Watch List - Pass
Loan portfolio by credit quality indicator
Portfolio, total	37	39
Commercial | Watch List - Substandard
Loan portfolio by credit quality indicator
Portfolio, total	65,596	62,007
Commercial | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		1,935
Real estate - construction
Loan portfolio by credit quality indicator
Portfolio, total	2,216,740	2,185,883
Real estate - construction | Pass
Loan portfolio by credit quality indicator
Portfolio, total	2,123,482	2,090,370
Real estate - construction | Special Review
Loan portfolio by credit quality indicator
Portfolio, total	16,106	18,721
Real estate - construction | Watch List - Pass
Loan portfolio by credit quality indicator
Portfolio, total	43,992	41,949
Real estate - construction | Watch List - Substandard
Loan portfolio by credit quality indicator
Portfolio, total	32,224	33,905
Real estate - construction | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		938
Commercial Real Estate: Farmland and Commercial
Loan portfolio by credit quality indicator
Portfolio, total	1,933,365	1,896,747
Commercial Real Estate: Farmland and Commercial | Pass
Loan portfolio by credit quality indicator
Portfolio, total	1,751,855	1,710,446
Commercial Real Estate: Farmland and Commercial | Special Review
Loan portfolio by credit quality indicator
Portfolio, total	9,388	13,184
Commercial Real Estate: Farmland and Commercial | Watch List - Pass
Loan portfolio by credit quality indicator
Portfolio, total	26,029	20,183
Commercial Real Estate: Farmland and Commercial | Watch List - Substandard
Loan portfolio by credit quality indicator
Portfolio, total	145,576	151,726
Commercial Real Estate: Farmland and Commercial | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		1,208
Commercial Real Estate: Multifamily
Loan portfolio by credit quality indicator
Portfolio, total	202,450	190,430
Commercial Real Estate: Multifamily | Pass
Loan portfolio by credit quality indicator
Portfolio, total	202,298	190,265
Commercial Real Estate: Multifamily | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		165
Residential First Lien
Loan portfolio by credit quality indicator
Portfolio, total	431,588	433,901
Residential First Lien | Pass
Loan portfolio by credit quality indicator
Portfolio, total	429,896	426,546
Residential First Lien | Special Review
Loan portfolio by credit quality indicator
Portfolio, total	249	253
Residential First Lien | Watch List - Pass
Loan portfolio by credit quality indicator
Portfolio, total	144	144
Residential First Lien | Watch List - Substandard
Loan portfolio by credit quality indicator
Portfolio, total	675	680
Residential First Lien | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		6,278
Residential Junior Lien
Loan portfolio by credit quality indicator
Portfolio, total	686,604	706,476
Residential Junior Lien | Pass
Loan portfolio by credit quality indicator
Portfolio, total	685,795	704,958
Residential Junior Lien | Special Review
Loan portfolio by credit quality indicator
Portfolio, total	809	826
Residential Junior Lien | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		692
Consumer
Loan portfolio by credit quality indicator
Portfolio, total	45,440	47,800
Consumer | Pass
Loan portfolio by credit quality indicator
Portfolio, total	45,437	46,605
Consumer | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		1,195
Foreign
Loan portfolio by credit quality indicator
Portfolio, total	139,182	141,049
Foreign | Pass
Loan portfolio by credit quality indicator
Portfolio, total	$ 139,182	140,785
Foreign | Watch - List Impaired
Loan portfolio by credit quality indicator
Portfolio, total		$ 264

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Junior Subordinated Deferrable Interest Debentures

3 Months Ended

Mar. 31, 2020

Junior Subordinated Deferrable Interest Debentures

Junior Subordinated Interest Deferrable Debentures

Note 8 — Junior Subordinated Interest Deferrable Debentures

As of March 31, 2020, we have five statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. The five statutory business trusts we formed (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (“Debentures”) that we issued. As of March 31, 2020 and December 31, 2019, the principal amount of Debentures outstanding totaled $134,642,000.

The Debentures are subordinated and junior in right of payment to all 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 our investments and not consolidated in our consolidated financial statements. Although the Capital and Common Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital and Common Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital and Common 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 March 31, 2020 and December 31, 2019, the total $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital.

The following table illustrates key information about each of the Capital and Common Securities and their interest rate at March 31, 2020:

	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	4.88	%	LIBOR	+	3.05	October 2033	October 2008
Trust IX		41,238	Quarterly	3.53	%	LIBOR	+	1.62	October 2036	October 2011
Trust X		21,021	Quarterly	3.41	%	LIBOR	+	1.65	February 2037	February 2012
Trust XI		25,990	Quarterly	3.53	%	LIBOR	+	1.62	July 2037	July 2012
Trust XII		20,619	Quarterly	3.03	%	LIBOR	+	1.45	September 2037	September 2012
	$	134,642

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

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Allowance for Credit Losses

3 Months Ended

Mar. 31, 2020

Allowance for Credit Losses

Allowance for Credit Losses

Note 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 allowance for credit losses (“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 transactions in the allowance for credit loan losses by loan class is as follows:

	Three Months Ended March 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 charged to allowance		(2,819)		—		(55)		—		(36)		—		(70)		—		(2,980)
Recoveries credited to allowance		671		—		9		—		1		103		8		—		792
Net (losses) recoveries charged to allowance		(2,148)		—		(46)		—		(35)		103		(62)		—		(2,188)
Credit loss expense		5,823		5,878		2,809		327		635		1,243		68		53		16,836
Balance at March 31,	$	19,067	$	37,421	$	15,004	$	1,758	$	2,782	$	8,452	$	323	$	466	$	85,273

	Three Months Ended March 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,	$	12,596	$	15,123	$	19,353	$	1,808	$	3,467	$	7,719	$	447	$	871	$	61,384
Losses charged to allowance		(2,764)		—		(1)		—		(1)		(6)		(63)		—		(2,835)
Recoveries credited to allowance		638		20		283		—		1		102		17		—		1,061
Net (losses) recoveries charged to allowance		(2,126)		20		282		—		—		96		(46)		—		(1,774)
Provision charged to operations		942		(354)		6,245		537		79		(70)		61		(20)		7,420
Balance at March 31,	$	11,412	$	14,789	$	25,880	$	2,345	$	3,546	$	7,745	$	462	$	851	$	67,030

The increase in credit loss expense for the three months ended March 31, 2020 can be primarily attributed to the economic changes that occurred in the first quarter as a result of COVID-19 and the impact of those changes on our first quarter ACL calculation. 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. Impacting the provision for loan loss for the three months ended March 31, 2019 is 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 court approved debtor in possession plan sponsor 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.

The table below provides additional information on the balance of loans individually or collectively evaluated for impairment and their related allowance, by loan class as of March 31, 2020 and December 31, 2019:

	March 31, 2020
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	342	$	1,367,362	$	18,725
Commercial real estate: other construction & land development		936		116		2,215,804		37,305
Commercial real estate: farmland & commercial		517		—		1,932,848		15,004
Commercial real estate: multifamily		152		—		202,298		1,758
Residential: first lien		92		—		431,496		2,782
Residential: junior lien		—		—		686,604		8,452
Consumer		3		—		45,437		323
Foreign		—		—		139,182		466
Total	$	3,349	$	458	$	7,021,031	$	84,815

	December 31, 2019
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	1,935	$	249	$	1,290,725	$	10,895
Commercial real estate: other construction & land development		938		116		2,184,945		18,037
Commercial real estate: farmland & commercial		1,208		—		1,895,539		16,533
Commercial real estate: multifamily		165		—		190,265		1,786
Residential: first lien		6,278		—		427,623		3,762
Residential: junior lien		692		—		705,784		7,535
Consumer		1,195		—		46,605		542
Foreign		264		—		140,785		823
Total	$	12,675	$	365	$	6,882,271	$	59,913

The table below provides additional information on loans accounted for on a non-accrual basis by loan class at March 31, 2020 and December 31, 2019:

	March 31, 2020		December 31, 2019
	(Dollars in Thousands)
Domestic
Commercial	$	1,649	$	1,901
Commercial real estate: other construction & land development		936		938
Commercial real estate: farmland & commercial		517		1,208
Commercial real estate: multifamily		152		165
Residential: first lien		624		670
Residential: junior lien		—		—
Consumer		3		4
Total non-accrual loans	$	3,881	$	4,886

Watch—List 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. Watch—List 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 tables detail key information regarding our impaired loans by loan class at December 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	December 31, 2019
			Unpaid				Average
	Recorded		Principal		Related		Recorded		Interest
	Investment		Balance		Allowance		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	510	$	516	$	249	$	514	$	—
Commercial real estate: other construction & land development		126		169		116		131		—
Total impaired loans with related allowance	$	636	$	685	$	365	$	645	$	—

	December 31, 2019
			Unpaid		Average
	Recorded		Principal		Recorded		Interest
	Investment		Balance		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	1,425	$	1,516	$	18,794	$	2
Commercial real estate: other construction & land development		812		1,133		1,737		—
Commercial real estate: farmland & commercial		1,208		1,841		22,357		—
Commercial real estate: multifamily		165		168		651		—
Residential: first lien		6,278		6,445		6,988		309
Residential: junior lien		692		692		1,023		42
Consumer		1,195		1,196		1,117		—
Foreign		264		264		278		12
Total impaired loans with no related allowance	$	12,039	$	13,255	$	52,945	$	365

The following table details key information regarding our impaired loans by loan class at March 31, 2019, in accordance with ASC 310 prior to the adoption of ASU 2016-13:

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	1,325	$	1,908
Commercial real estate: other construction & land development		134		169
Commercial real estate: farmland & commercial		24,463		24,774
Total impaired loans with related allowance	$	25,922	$	26,851

	March 31, 2019
	Quarter to Date
	Average
	Recorded		Interest
	Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	17,370	$	1
Commercial real estate: other construction & land development		1,924		—
Commercial real estate: farmland & commercial		2,305		—
Commercial real estate: multifamily		506		—
Residential: first lien		6,239		75
Residential: junior lien		912		11
Consumer		1,075		—
Foreign		288		3
Total impaired loans with no related allowance	$	30,619	$	90

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 Watch List—Doubtful loans.

	March 31, 2020		December 31, 2019
		(Dollars in Thousands)
Domestic
Commercial	$	—	$	32
Residential: first lien		3,857		5,608
Residential: junior lien		680		692
Consumer		1,217		1,192
Foreign		256		264
Total troubled debt restructuring	$	6,010	$	7,788

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. To date, we have approximately $1,270,763,000 in loans with some degree of payment deferrals in our system. In accordance with interagency guidance issued in March 2020, these short-term deferrals are not considered troubled debt restructurings.

With the passage of the Paycheck Protection Program (“PPP”), administered by the Small Business Association (“SBA”), we are actively assisting our customers with applications for loans through the PPP. PPP loans have a two-year term and earn interest at 1%; however, the loans also include some forgiveness provisions that we expect most customers will utilize. These loans are intended to support eight weeks of payroll and other costs to help those businesses remain viable and allow their employees to pay their bills. As of May 5, 2020, we had approved and closed with the SBA 4,528 PPP loans totaling approximately $461,133,000. 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 our management believes 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 can be made only on a subjective basis. It is the judgment of our management that the ACL at March 31, 2020 was adequate to absorb probable losses from loans in the portfolio at that date.

The following tables present information regarding the aging of past due loans by loan class at March 31, 2020 and December 31, 2019:

	March 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	$	4,226	$	776	$	1,949	$	997	$	6,951	$	1,362,060	$	1,369,011
Commercial real estate: other construction & land development		8,953		1,479		145		145		10,577		2,206,163		2,216,740
Commercial real estate: farmland & commercial		22,566		1,543		47,658		47,658		71,767		1,861,598		1,933,365
Commercial real estate: multifamily		124		—		11		—		135		202,315		202,450
Residential: first lien		4,726		1,326		3,624		3,164		9,676		421,912		431,588
Residential: junior lien		1,509		513		1,173		1,173		3,195		683,409		686,604
Consumer		717		166		60		60		943		44,497		45,440
Foreign		3,466		482		1		1		3,949		135,233		139,182
Total past due loans	$	46,287	$	6,285	$	54,621	$	53,198	$	107,193	$	6,917,187	$	7,024,380

	December 31, 2019
							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	$	3,134	$	626	$	1,292	$	421	$	5,052	$	1,287,608	$	1,292,660
Commercial real estate: other construction & land development		509		55		—		—		564		2,185,319		2,185,883
Commercial real estate: farmland & commercial		8,058		2,031		54,928		54,878		65,017		1,831,730		1,896,747
Commercial real estate: multifamily		313		—		165		—		478		189,952		190,430
Residential: first lien		3,229		1,670		3,660		3,107		8,559		425,342		433,901
Residential: junior lien		1,112		477		1,200		1,200		2,789		703,687		706,476
Consumer		467		75		88		88		630		47,170		47,800
Foreign		1,347		3		11		11		1,361		139,688		141,049
Total past due loans	$	18,169	$	4,937	$	61,344	$	59,705	$	84,450	$	6,810,496	$	6,894,946

A summary of the loan portfolio by credit quality indicator by loan class by year of origination at March 31, 2020 is presented below. A summary of the loan portfolio by credit quality indicator presented at December 31, 2019 is based on guidance prior to the adoption of ASU 2016-13 is also presented below:

		2020	2019		2018		2017		2016		Prior		Total
	(Dollars in Thousands)
Balance at March 31, 2020
Domestic
Commercial
Pass	$	245,351	$	533,082	$	270,142	$	145,268	$	22,269	$	13,917	$	1,230,029
Special Review		—		71,700		—		—		—		—		71,700
Watch List - Pass		—		11		—		—		—		26		37
Watch List - Substandard		62,569		2,517		504		6		—		—		65,596
Watch List - Doubtful		353		608		455		229		4		—		1,649
Total Commercial	$	308,273	$	607,918	$	271,101	$	145,503	$	22,273	$	13,943	$	1,369,011
Commercial real estate: other construction & land development
Pass	$	136,898	$	1,064,250	$	624,498	$	238,744	$	41,536	$	17,556	$	2,123,482
Special Review		—		16,106		—		—		—		—		16,106
Watch List - Pass		8,000		35,622		370		—		—		—		43,992
Watch List - Substandard		275		31,804		—		—		145		—		32,224
Watch List - Doubtful		—		812		124		—		—		—		936
Total Commercial real estate: other construction & land development	$	145,173	$	1,148,594	$	624,992	$	238,744	$	41,681	$	17,556	$	2,216,740
Commercial real estate: farmland & commercial
Pass	$	139,114	$	675,730	$	385,302	$	203,811	$	132,509	$	215,389	$	1,751,855
Special Review		938		—		4,649		175		3,205		421		9,388
Watch List - Pass		16,713		5,956		2,648		124		587		1		26,029
Watch List - Substandard		1,668		52,471		—		2,348		85,594		3,495		145,576
Watch List - Doubtful		—		243		—		41		—		233		517
Total Commercial real estate: farmland & commercial	$	158,433	$	734,400	$	392,599	$	206,499	$	221,895	$	219,539	$	1,933,365
Commercial real estate: multifamily
Pass	$	10,623	$	58,886	$	38,954	$	64,640	$	14,660	$	14,535	$	202,298
Watch List - Doubtful		141		—		—		—		—		11		152
Total Commercial real estate: multifamily	$	10,764	$	58,886	$	38,954	$	64,640	$	14,660	$	14,546	$	202,450
Residential: first lien
Pass	$	27,821	$	75,150	$	88,482	$	65,513	$	40,903	$	132,027	$	429,896
Special Review		—		—		—		—		249		—		249
Watch List - Pass		—		—		144		—		—		—		144
Watch List - Substandard		—		—		624		—		51		—		675
Watch List - Doubtful		92		—		—		—		—		532		624
Total Residential: first lien	$	27,913	$	75,150	$	89,250	$	65,513	$	41,203	$	132,559	$	431,588
Residential: junior lien
Pass	$	33,344	$	161,204	$	105,315	$	127,651	$	100,080	$	158,201	$	685,795
Special Review		—		—		—		809		—		—		809
Total Residential: junior lien	$	33,344	$	161,204	$	105,315	$	128,460	$	100,080	$	158,201	$	686,604
Consumer
Pass	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,008	$	45,437
Watch List - Doubtful		—		—		—		—		—		3		3
Total Consumer	$	10,732	$	28,354	$	3,613	$	558	$	172	$	2,011	$	45,440
Foreign
Pass	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Foreign	$	22,915	$	79,118	$	17,208	$	7,403	$	4,614	$	7,924	$	139,182
Total Loans	$	717,547	$	2,893,624	$	1,543,032	$	857,320	$	446,578	$	566,279	$	7,024,380

			December 31, 2019
			Special		Watch		Watch List—		Watch List—
	Pass		Review		List—Pass		Substandard		Impaired
			(Dollars in Thousands)
Domestic
Commercial	$	1,228,110	$	569	$	39	$	62,007	$	1,935
Commercial real estate: other construction & land development		2,090,370		18,721		41,949		33,905		938
Commercial real estate: farmland & commercial		1,710,446		13,184		20,183		151,726		1,208
Commercial real estate: multifamily		190,265		—		—		—		165
Residential: first lien		426,546		253		144		680		6,278
Residential: junior lien		704,958		826		—		—		692
Consumer		46,605		—		—		—		1,195
Foreign		140,785		—		—		—		264
Total	$	6,538,085	$	33,553	$	62,315	$	248,318	$	12,675

The increase in Special Review Commercial loans at March 31, 2020 can be attributed to the movement of a relationship in the oil and gas production business from the Pass category.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 04, 2020
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	000-09439
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
Trading Symbol	IBOC
Security Exchange Name	NASDAQ
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
Entity Common Stock, Shares Outstanding		63,270,747
Entity Central Index Key	0000315709
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Consolidated Statements of Comprehensive Income
Net income	$ 34,838	$ 51,906
Other comprehensive income, net of tax:
Net unrealized holding gains on securities available for sale arising during period (net of tax effects of $16,482, and $6,706)	62,003	25,226
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $1 and $1)	4	3
Other comprehensive income, net of tax	62,007	25,229
Comprehensive income	$ 96,845	$ 77,135

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net income	$ 34,838	$ 51,906
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss expenses	16,836	7,420
Specific reserve, other real estate owned	537	8
Depreciation of bank premises and equipment	7,109	6,981
Gain on sale of bank premises and equipment	(358)	(43)
Gain on sale of other real estate owned	(79)	(469)
Accretion of investment securities discounts	(120)	(55)
Amortization of investment securities premiums	7,373	4,024
Investment securities transactions, net	5	4
Unrealized gain on equity securities with readily determinable fair values	(30)	(138)
Stock based compensation expense	219	265
Losses (earnings) from affiliates and other investments	521	(3,444)
Deferred tax expense	(14,123)	(1,435)
Increase in accrued interest receivable	(450)	(603)
Increase in other assets	(228)	(20,685)
Increase in other liabilities	4,571	23,962
Net cash provided by operating activities	56,621	67,698
Investing activities:
Proceeds from maturities of securities	1,075
Proceeds from sales and calls of available for sale securities	18,920	41,420
Purchases of available for sale securities	(421,017)	(145,966)
Principal collected on mortgage backed securities	257,223	132,820
Net increase in loans	(120,789)	(147,124)
Purchases of other investments	(6,760)	(13,045)
Distributions from other investments	26,382	46,677
Purchases of bank premises and equipment	(2,769)	(6,130)
Proceeds from sales of bank premises and equipment	370	1,510
Proceeds from sales of other real estate owned	2,034	707
Net cash used in investing activities	(245,331)	(89,131)
Financing activities:
Net increase in non-interest bearing demand deposits	118,934	103,879
Net decrease (increase) in savings and interest-bearing demand deposits	22,127	78,512
Net increase (decrease) in time deposits	42,793	16,994
Net increase (decrease) in securities sold under repurchase agreements	29,936	48,641
Net decrease (increase) in other borrowed funds	101,954	(194,770)
Purchase of treasury stock	(29,371)	(54)
Proceeds from stock transactions	225	598
Net cash (used in) provided by financing activities	286,598	53,800
(Decrease) increase in cash and cash equivalents	97,888	32,367
Cash and cash equivalents at beginning of period	256,820	316,797
Cash and cash equivalents at end of period	354,708	349,164
Supplemental cash flow information:
Interest paid	13,353	13,982
Income taxes paid	206
Non-cash investing and financing activities:
Net transfers from loans to other real estate owned	486	704
Dividends declared, not yet paid on common stock	35,128	32,822
Establishment of lease liability and right-of-use asset		$ 6,171
Net transfers from bank premises and equipment to other assets	$ 7,546

XML

Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Apr. 05, 2012
Stock options under 2012 Plan
Stock option details
Shares available for future grants	9,414		800,000
Maximum exercisable period for options granted	10 years
Number of options granted (in shares)	26,500
Stock option activity
Options outstanding at the beginning of the period (in shares)	658,588
Plus: Options granted (in shares)	26,500
Less:
Options exercised (in shares)	10,549
Options forfeited (in shares)	7,263
Options outstanding at the end of the period (in shares)	667,276
Options fully vested and exercisable at the end of the period (in shares)	393,999
Stock Options, Weighted average exercise price
Options outstanding at the beginning, weighted average exercise price (in dollars per share)	$ 27.55
Plus: Options granted, weighted average exercise price (in dollars per share)	16.84
Less:
Options exercised, weighted average exercise price (in dollars per share)	21.37
Options forfeited, weighted average exercise price (in dollars per share)	29.55
Options outstanding at the end, weighted average exercise price (in dollars per share)	27.20
Options fully vested and exercisable at the end, weighted average exercise price (in dollars per share)	$ 22.02
Stock Options, Weighted average remaining contractual term (years)
Options outstanding at the end, weighted average remaining contractual term (years)	5 years 8 months 15 days
Options fully vested and exercisable at the end, weighted average remaining contractual term (years)	4 years 1 month 6 days
Stock Options, Aggregate intrinsic value
Options outstanding at the end, aggregate intrinsic value	$ 2,131
Options fully vested and exercisable at the end, aggregate intrinsic value	1,825
Stock-based compensation expense	219	$ 265
Stock-based compensation cost, unrecognized, related to non-vested options	$ 1,704
Stock-based compensation cost, unrecognized, related to non-vested options, weighted-average period of recognition	1 year 9 months 18 days
Incentive stock options granted to 10% shareholders
Stock option details
Maximum exercisable period for options granted	5 years

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Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Summary of loans, by loan type
Total loans	$ 7,024,380	$ 6,894,946
Commercial, financial and agricultural
Summary of loans, by loan type
Total loans	3,504,826	3,379,837
Real estate - mortgage
Summary of loans, by loan type
Total loans	1,118,192	1,140,377
Real estate - construction
Summary of loans, by loan type
Total loans	2,216,740	2,185,883
Consumer
Summary of loans, by loan type
Total loans	45,440	47,800
Foreign
Summary of loans, by loan type
Total loans	$ 139,182	$ 141,049

XML

Allowance for Credit Losses (Impaired Loans) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Interest Recognized
Total trouble debt restructuring	$ 6,010,000		$ 7,788,000
Amount of loans with some degree of payment deferred	$ 1,270,763,000
Term of receivable (in years)	2 years
Loans	$ 7,024,380,000		6,894,946,000
Amount of loans approved and closed	$ 461,133,000
Period of charge off for past due unsecured commercial loans	90 days
Class of Financing Receivable
Recorded investment:
Total impaired loans with related allowance		$ 25,922,000	636,000
Total impaired loans with no related allowance			12,039,000
Unpaid principal balance:
Total impaired loans with an allowance recorded			685,000
Total impaired loans with no related allowance recorded			13,255,000
Related Allowance			365,000
Average recorded investment:
Total impaired loans with an allowance recorded			645,000
Total impaired loans with no related allowance recorded		30,619,000	52,945,000
Interest Recognized
Total impaired loans with an allowance recorded		26,851,000
Total impaired loans with no related allowance recorded		90,000	365,000
Commercial
Interest Recognized
Total trouble debt restructuring			32,000
Loans	$ 1,369,011,000		1,292,660,000
Commercial | Class of Financing Receivable
Recorded investment:
Total impaired loans with related allowance		1,325,000	510,000
Total impaired loans with no related allowance			1,425,000
Unpaid principal balance:
Total impaired loans with an allowance recorded			516,000
Total impaired loans with no related allowance recorded			1,516,000
Related Allowance			249,000
Average recorded investment:
Total impaired loans with an allowance recorded			514,000
Total impaired loans with no related allowance recorded		17,370,000	18,794,000
Interest Recognized
Total impaired loans with an allowance recorded		1,908,000
Total impaired loans with no related allowance recorded		1,000	2,000
Real estate - construction
Interest Recognized
Loans	2,216,740,000		2,185,883,000
Real estate - construction | Class of Financing Receivable
Recorded investment:
Total impaired loans with related allowance		134,000	126,000
Total impaired loans with no related allowance			812,000
Unpaid principal balance:
Total impaired loans with an allowance recorded			169,000
Total impaired loans with no related allowance recorded			1,133,000
Related Allowance			116,000
Average recorded investment:
Total impaired loans with an allowance recorded			131,000
Total impaired loans with no related allowance recorded		1,924,000	1,737,000
Interest Recognized
Total impaired loans with an allowance recorded		169,000
Commercial Real Estate: Farmland and Commercial
Interest Recognized
Loans	1,933,365,000		1,896,747,000
Commercial Real Estate: Farmland and Commercial | Class of Financing Receivable
Recorded investment:
Total impaired loans with related allowance		24,463,000
Total impaired loans with no related allowance			1,208,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			1,841,000
Average recorded investment:
Total impaired loans with no related allowance recorded		2,305,000	22,357,000
Interest Recognized
Total impaired loans with an allowance recorded		24,774,000
Commercial Real Estate: Multifamily
Interest Recognized
Loans	202,450,000		190,430,000
Commercial Real Estate: Multifamily | Class of Financing Receivable
Recorded investment:
Total impaired loans with no related allowance			165,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			168,000
Average recorded investment:
Total impaired loans with no related allowance recorded		506,000	651,000
Residential First Lien
Interest Recognized
Total trouble debt restructuring	3,857,000		5,608,000
Loans	431,588,000		433,901,000
Residential First Lien | Class of Financing Receivable
Recorded investment:
Total impaired loans with no related allowance			6,278,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			6,445,000
Average recorded investment:
Total impaired loans with no related allowance recorded		6,239,000	6,988,000
Interest Recognized
Total impaired loans with no related allowance recorded		75,000	309,000
Residential Junior Lien
Interest Recognized
Total trouble debt restructuring	680,000		692,000
Loans	686,604,000		706,476,000
Residential Junior Lien | Class of Financing Receivable
Recorded investment:
Total impaired loans with no related allowance			692,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			692,000
Average recorded investment:
Total impaired loans with no related allowance recorded		912,000	1,023,000
Interest Recognized
Total impaired loans with no related allowance recorded		11,000	42,000
Consumer
Interest Recognized
Total trouble debt restructuring	1,217,000		1,192,000
Loans	45,440,000		47,800,000
Consumer | Class of Financing Receivable
Recorded investment:
Total impaired loans with no related allowance			1,195,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			1,196,000
Average recorded investment:
Total impaired loans with no related allowance recorded		1,075,000	1,117,000
Foreign
Interest Recognized
Total trouble debt restructuring	256,000		264,000
Loans	$ 139,182,000		141,049,000
Foreign | Class of Financing Receivable
Recorded investment:
Total impaired loans with no related allowance			264,000
Unpaid principal balance:
Total impaired loans with no related allowance recorded			264,000
Average recorded investment:
Total impaired loans with no related allowance recorded		288,000	278,000
Interest Recognized
Total impaired loans with no related allowance recorded		$ 3,000	$ 12,000
Paycheck Protection Program Loans
Interest Recognized
Interest rate on receivable	1.00%
Number of loans approved and closed	4,528

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Other Borrowed Funds

3 Months Ended

Mar. 31, 2020

Other Borrowed Funds

Other Borrowed Funds

Note 7 — Other Borrowed Funds

Other borrowed funds include FHLB borrowings, which are short-term and 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 mortgage-backed investment securities and a portion of our loan portfolio. At March 31, 2020, other borrowed funds totaled $728,465,000, an increase of 16.3% from $626,511,000 at December 31, 2019. The increase in borrowings can be primarily attributed to increased liquidity needs to fund operations, loan activity, and purchases of available-for-sale securities.

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Loans

3 Months Ended

Mar. 31, 2020

Loans

Loans

Note 3 — Loans

A summary of loans, by loan type at March 31, 2020 and December 31, 2019 is as follows:

	March 31,		December 31,
	2020		2019
	(Dollars in Thousands)
Commercial, financial and agricultural	$	3,504,826	$	3,379,837
Real estate - mortgage		1,118,192		1,140,377
Real estate - construction		2,216,740		2,185,883
Consumer		45,440		47,800
Foreign		139,182		141,049
Total loans	$	7,024,380	$	6,894,946

XML

Stock Options (Tables)

3 Months Ended

Mar. 31, 2020

Stock Options

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, 2019	658,588	$	27.55
Plus: Options granted	26,500		16.84
Less:
Options exercised	10,549		21.37
Options expired	—		—
Options forfeited	7,263		29.55
Options outstanding at March 31, 2020	667,276		27.20	5.71	$	2,131
Options fully vested and exercisable at March 31, 2020	393,999	$	22.02	4.10	$	1,825

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Capital Ratios

3 Months Ended

Mar. 31, 2020

Capital Requirements

Capital Ratios

Note 11 — Capital Ratios

Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under

regulatory accounting practices. Capital amount and classifications are also subject to qualitative judgements by regulators about components, risk-weighting and other factors.

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 Wall Street Reform and Consumer Protection Act (“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 March 31, 2020, 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).

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 March 31, 2020, our capital levels 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.

We had a CET1 to risk-weighted assets ratio of 18.23% on March 31, 2020 and 18.58% on December 31, 2019. We had a Tier 1 capital-to-average-total-asset (leverage) ratio of 16.03% and 16.65%, risk-weighted Tier 1 capital ratio of 19.45% and 19.80% and risk-weighted total capital ratio of 20.36% and 20.46% at March 31, 2020 and December 31, 2019, respectively. Our CET1 capital consists of common stock and related surplus, net of treasury stock, and retained earnings. We and our Subsidiary Banks elected to opt-out of the requirement to include most components of accumulated other comprehensive income (loss) in the calculation of CET1 capital. CET1 is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Tier 1 capital includes CET1 capital and additional Tier 1 capital. Additional Tier 1 capital includes the Capital and Common Securities issued by the Trusts (see Note 8 above) up to a maximum of 25% of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold qualifies as Tier 2 capital. As of March 31, 2020, the total of $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital. We actively monitor the regulatory capital ratios to ensure that our Subsidiary Banks are well-capitalized under the regulatory framework.

The CET1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk-weight category, and certain off-balance-sheet items, among other things. The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets, among other things.

We and our Subsidiary Banks are subject to the regulatory capital requirements administered by the Federal Reserve, and, for our Subsidiary Banks, the FDIC. Regulatory authorities can initiate certain mandatory actions if we or any of our Subsidiary Banks fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of March 31, 2020, that we and each of our Subsidiary Banks meet all capital adequacy requirements to which we are subject.

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Fair Value Measurements (Fair Value By Level) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets:
Available for sale debt securities	$ 3,594,514	$ 3,378,923
Equity Securities	6,125	6,095
Marketable Securities	3,603,039	3,387,418
Assets/liabilities measured at fair value | Residential mortgage-backed securities
Assets:
Available for sale debt securities	3,520,332	3,285,548
Assets/liabilities measured at fair value | Obligations of states and political subdivisions
Assets:
Available for sale debt securities	74,182	93,375
Measured on a recurring basis: | Assets/liabilities measured at fair value
Assets:
Marketable Securities	3,600,639	3,385,018
Measured on a recurring basis: | Assets/liabilities measured at fair value | Residential mortgage-backed securities
Assets:
Available for sale debt securities	3,520,332	3,285,548
Measured on a recurring basis: | Assets/liabilities measured at fair value | Obligations of states and political subdivisions
Assets:
Available for sale debt securities	74,182	93,375
Measured on a recurring basis: | Assets/liabilities measured at fair value | Equity securities with readily determinable fair values
Assets:
Equity Securities	6,125	6,095
Measured on a recurring basis: | Assets/liabilities measured at fair value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Marketable Securities	6,125	6,095
Measured on a recurring basis: | Assets/liabilities measured at fair value | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities with readily determinable fair values
Assets:
Equity Securities	6,125	6,095
Measured on a recurring basis: | Assets/liabilities measured at fair value | Significant Other Observable Inputs (Level 2)
Assets:
Marketable Securities	3,594,514	3,378,923
Measured on a recurring basis: | Assets/liabilities measured at fair value | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities
Assets:
Available for sale debt securities	3,520,332	3,285,548
Measured on a recurring basis: | Assets/liabilities measured at fair value | Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
Assets:
Available for sale debt securities	$ 74,182	$ 93,375

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Investment Securities and Equity Securities with Readily Determinable Fair Values (Contractual Maturities and Estimated Fair Values) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Held-to-maturity debt securities amortized cost disclosures
Due in one year or less, held-to-maturity debt securities amortized cost	$ 1,200
Due after one year through five years, held-to-maturity debt securities amortized cost	1,200
Amortized cost, held-to-maturity debt securities	2,400		$ 2,400
Held-to-maturity debt securities, Estimated fair value disclosures
Due in one year or less, held-to-maturity debt securities, Estimated fair value	1,200
Due after one year through five years, held-to-maturity debt securities, Estimated fair value	1,200
Estimated fair value	2,400		2,400
Available-for-sale debt securities amortized cost disclosures
Due after five years through ten years, available-for-sale debt securities amortized cost	355
Due after ten years, available-for-sale debt securities amortized cost	71,040
Residential mortgage-backed securities, amortized cost	3,441,216
Amortized cost, Available-for-sale securities	3,512,611		3,376,070
Available for sale debt securities, Estimated Fair Value Disclosures
Due after five years through ten years, available-for-sale debt securities, Estimated Fair Value	356
Due after ten years, available-for-sale debt securities, Estimated Fair Value	73,826
Residential mortgage-backed securities, Estimated Fair Value	3,520,332
Estimated fair value, Available for sale securities	3,594,514		$ 3,378,923
Proceeds from sales and calls of available for sale securities	18,920	$ 41,420
Proceeds from sales of mortgage-backed securities	0	0
Gross gains realized on sales	0	2
Gross losses realized on sales	5	$ 6
Collateral Pledged
Available-for-sale debt securities amortized cost disclosures
Amortized cost, Available-for-sale securities	997,342
Available for sale debt securities, Estimated Fair Value Disclosures
Fair value of available for sale investment securities pledged	$ 1,020,890

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Junior Subordinated Deferrable Interest Debentures (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($)
Junior subordinated deferrable interest debentures, major types of business trusts
Number of statutory business trusts issuing trust preferred securities | item	5
Junior subordinated deferrable interest debentures	$ 134,642	$ 134,642
Maximum number of consecutive quarterly period available for deferral of interest payment on Trusts VI, 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
Trust XI
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	25,990
Trust X
Junior subordinated deferrable interest debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 21,021