10-Q

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, 2019

OR

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

For the transition period from          to

Commission File Number 0-14384

BancFirst Corporation

(Exact name of registrant as specified in charter)

Oklahoma	73-1221379
(State or other Jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)

101 N. Broadway, Oklahoma City, Oklahoma	73102-8405
(Address of principal executive offices)	(Zip Code)

(405) 270-1086

(Registrant’s telephone number, including area code)

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 (sec. 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 whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.  See definition of “accelerated filer and large accelerated filer” 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 by Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $1.00 Par Value Per Share	BANF	NASDAQ Global Select Market System

As of April 30, 2019 there were 32,626,588 shares of the registrant’s Common Stock outstanding.

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

BANCFIRST CORPORATION

CONSOLIDATED BALANCE SHEETS

(Dollars in thousands)

	March 31,			December 31,
		2019			2018
	(unaudited)			(see Note 1)
ASSETS
Cash and due from banks	$	185,958		$	228,431
Interest-bearing deposits with banks		1,291,447			1,195,824
Securities held for investment (fair value: $1,223 and $1,433, respectively)		1,217			1,428
Securities available for sale at fair value		723,655			770,704
Loans held for sale		7,719			8,174
Loans (net of unearned interest)		5,042,502			4,975,976
Allowance for loan losses		(52,915	)		(51,389	)
Loans, net of allowance for loan losses		4,989,587			4,924,587
Premises and equipment, net		177,950			174,362
Other real estate owned		6,172			6,690
Intangible assets, net		15,701			16,470
Goodwill		79,749			79,749
Accrued interest receivable and other assets		229,845			167,839
Total assets	$	7,709,000		$	7,574,258
LIABILITIES AND STOCKHOLDERS' EQUITY
Deposits:
Noninterest-bearing	$	2,659,584		$	2,613,876
Interest-bearing		4,046,802			3,991,619
Total deposits		6,706,386			6,605,495
Short-term borrowings		5,200			1,675
Accrued interest payable and other liabilities		42,683			37,495
Junior subordinated debentures		26,804			26,804
Total liabilities		6,781,073			6,671,469
Stockholders' equity:
Senior preferred stock, $1.00 par; 10,000,000 shares authorized; none issued		—			—
Cumulative preferred stock, $5.00 par; 900,000 shares authorized; none issued		—			—
Common stock, $1.00 par, 40,000,000 shares authorized; shares issued and       outstanding: 32,617,788 and 32,603,926, respectively		32,618			32,604
Capital surplus		150,195			149,709
Retained earnings		744,713			722,615
Accumulated other comprehensive loss, net of income tax of $137       and $(731), respectively		401			(2,139	)
Total stockholders' equity		927,927			902,789
Total liabilities and stockholders' equity	$	7,709,000		$	7,574,258

The accompanying Notes are an integral part of these consolidated financial statements.

2

BANCFIRST CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(Dollars in thousands, except per share data)

	Three Months Ended
	March 31,
		2019			2018
INTEREST INCOME
Loans, including fees	$	68,730		$	62,919
Securities:
Taxable		4,335			1,898
Tax-exempt		126			171
Federal funds sold		2			104
Interest-bearing deposits with banks		7,748			5,782
Total interest income		80,941			70,874
INTEREST EXPENSE
Deposits		13,537			7,269
Short-term borrowings		10			35
Junior subordinated debentures		491			535
Total interest expense		14,038			7,839
Net interest income		66,903			63,035
Provision for loan losses		1,684			314
Net interest income after provision for loan losses		65,219			62,721
NONINTEREST INCOME
Trust revenue		3,177			3,129
Service charges on deposits		17,663			16,653
Securities transactions (includes no accumulated other comprehensive income reclassifications)		—			(14	)
Income from sales of loans		698			651
Insurance commissions		5,265			5,199
Cash management		3,776			3,021
(Loss)/gain on sale of other assets		(4	)		26
Other		1,426			1,445
Total noninterest income		32,001			30,110
NONINTEREST EXPENSE
Salaries and employee benefits		36,171			34,190
Occupancy, net		2,627			3,402
Depreciation		2,985			2,410
Amortization of intangible assets		759			733
Data processing services		1,480			1,203
Net (income)/expense from other real estate owned		(484	)		26
Marketing and business promotion		2,261			2,352
Deposit insurance		533			619
Other		9,874			10,955
Total noninterest expense		56,206			55,890
Income before taxes		41,014			36,941
Income tax expense		9,177			7,321
Net income	$	31,837		$	29,620
NET INCOME PER COMMON SHARE
Basic	$	0.98		$	0.91
Diluted	$	0.96		$	0.89
OTHER COMPREHENSIVE GAIN/(LOSS)
Unrealized gains/(losses) on securities, net of tax of $(868) and $474, respectively		2,540			(1,388	)
Reclassification adjustment for gains/(losses) included in net income		—			—
Other comprehensive gains/(losses), net of tax of $(868) and $474, respectively		2,540			(1,388	)
Comprehensive income	$	34,377		$	28,232

The accompanying Notes are an integral part of these consolidated financial statements.

3

BANCFIRST CORPORATION

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(Unaudited)

(Dollars in thousands)

	Three Months Ended
	March 31,
	2019			2018
COMMON STOCK
Issued at beginning of period	$	32,604		$	31,895
Shares issued for stock options		14			80
Shares issued for acquisitions		—			733
Issued at end of period	$	32,618		$	32,708
CAPITAL SURPLUS
Balance at beginning of period	$	149,709		$	107,481
Common stock issued for stock options		312			1,210
Common stock issued for acquisitions		—			38,765
Stock-based compensation arrangements		174			306
Balance at end of period	$	150,195		$	147,762
RETAINED EARNINGS
Balance at beginning of period	$	722,615		$	638,580
Net income		31,837			29,620
Dividends on common stock ($0.30 and $0.21 per share, respectively)		(9,739	)		(6,859	)
Balance at end of period	$	744,713		$	661,341
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized gains/(losses) on securities:
Balance at beginning of period	$	(2,139	)	$	(2,327	)
Net change		2,540			(1,388	)
Balance at end of period	$	401		$	(3,715	)
Total stockholders’ equity	$	927,927		$	838,096

The accompanying Notes are an integral part of these consolidated financial statements.

4

BANCFIRST CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOW

(Unaudited)

(Dollars in thousands)

	Three Months Ended
	March 31,
	2019			2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	31,837		$	29,620
Adjustments to reconcile to net cash provided by operating activities:
Provision for loan losses		1,684			314
Depreciation and amortization		3,744			3,143
Net amortization of securities premiums and discounts		(1,948	)		(49	)
Realized securities losses		—			14
Gain on sales of loans		(698	)		(651	)
Cash receipts from the sale of loans originated for sale		43,229			44,558
Cash disbursements for loans originated for sale		(42,094	)		(43,949	)
Deferred income tax benefit		(459	)		(117	)
Gain on other assets		(499	)		(21	)
Increase in interest receivable		(1,500	)		(1,111	)
Increase in interest payable		382			353
Amortization of stock-based compensation arrangements		174			306
Excess tax benefit from stock-based compensation arrangements		(102	)		(647	)
Other, net		2,910			(5,408	)
Net cash provided by operating activities		36,660			26,355
INVESTING ACTIVITIES
Net cash received from acquisitions, net of cash paid		—			6,248
Net decrease in federal funds sold		—			2,451
Purchases of available for sale securities		—			(30,861	)
Proceeds from maturities, calls and paydowns of held for investment securities		210			213
Proceeds from maturities, calls and paydowns of available for sale securities		2,406			5,729
Proceeds from sales of available for sale securities		—			1,460
Purchase of equity securities		(1,828	)		—
Proceeds from paydowns and sales of equity securities		110			—
Net change in loans		(67,249	)		48,819
Purchases of premises, equipment and computer software		(6,792	)		(7,168	)
Other, net		(5,019	)		(857	)
Net cash (used in) provided by investing activities		(78,162	)		26,034
FINANCING ACTIVITIES
Net change in deposits		100,582			(31,953	)
Net increase/(decrease) in short-term borrowings		3,525			(800	)
Issuance of common stock in connection with stock options, net		326			1,290
Cash dividends paid		(9,781	)		(6,698	)
Net cash provided by (used in)  financing activities		94,652			(38,161	)
Net increase in cash, due from banks and interest-bearing deposits		53,150			14,228
Cash, due from banks and interest-bearing deposits at the beginning of the period		1,424,255			1,757,875
Cash, due from banks and interest-bearing deposits at the end of the period	$	1,477,405		$	1,772,103
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	$	13,655		$	7,486
Cash paid during the period for income taxes	$	—		$	1,250
Noncash investing and financing activities:
Stock issued in acquisitions	$	—		$	39,498
Cash consideration for acquisitions	$	—		$	24,722
Fair value of assets acquired in acquisitions	$	—		$	377,320
Liabilities assumed in acquisitions	$	—		$	338,860
Unpaid common stock dividends declared	$	9,784		$	6,854

The accompanying Notes are an integral part of these consolidated financial statements.

5

BANCFIRST CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(1) DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The accounting and reporting policies of BancFirst Corporation and its subsidiaries (the “Company”) conform to accounting principles generally accepted in the United States of America (U.S. GAAP) and general practice within the banking industry. A summary of significant accounting policies can be found in Note (1) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Basis of Presentation

The accompanying unaudited interim consolidated financial statements include the accounts of BancFirst Corporation, Council Oak Partners, LLC, BancFirst Insurance Services, Inc., BancFirst Risk & Insurance Company and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BFTower, LLC and BancFirst Agency, Inc. All significant intercompany accounts and transactions have been eliminated. Assets held in a fiduciary or agency capacity are not assets of the Company and, accordingly, are not included in the unaudited interim consolidated financial statements.

The accompanying unaudited interim consolidated financial statements and notes are presented in accordance with the instructions for Form 10-Q. The information contained in the financial statements and footnotes included in BancFirst Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, should be referred to in connection with these unaudited interim consolidated financial statements. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

The unaudited interim consolidated financial statements contained herein reflect all adjustments which are, in the opinion of management, necessary to provide a fair statement of the financial position and results of operations of the Company for the interim periods presented. All such adjustments are of a normal and recurring nature. There have been no significant changes in the accounting policies of the Company since December 31, 2018, the date of the most recent annual report.

Reclassifications

Certain items in prior financial statements have been reclassified to conform to the current presentation. Such reclassifications had no effect on previously reported cash flows, stockholders’ equity or comprehensive income.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States inherently involves the use of estimates and assumptions that affect the amounts reported in the financial statements and the related disclosures. These estimates relate principally to the determination of the allowance for loan losses, income taxes, the fair value of financial instruments and the valuation of intangibles. Such estimates and assumptions may change over time and actual amounts realized may differ from those reported.

Recent Accounting Pronouncements

Standards Adopted During Current Period:

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “Leases - (Topic 842)”, amended by ASU 2018-11, “Leases – (Topic 842)”: Targeted Improvements. This new guidance requires a lessee to recognize on the balance sheet the assets and liabilities for the rights and obligations created by leases with lease terms of more than twelve months and provide additional disclosures. The amendments were effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2018. The Company adopted this new standard on January 1, 2019, using a modified retrospective transition approach and recognized right-of-use lease assets and related lease liabilities totaling $4.3 million. The Company elected to apply certain practical adoption expedients provided under the updates whereby it did not reassess initial direct costs for any existing leases.No cumulative-effect adjustment was recognized as the amount was not material, and the impact on our results of operations and cash flows was also not material. No prior periods were adjusted. See Note 6 for the financial position impact and additional disclosures.

Standards Not Yet Adopted:

6

In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820).” ASU 2018-13 removes, modifies and adds disclosure requirements on fair value measurements. ASU 2018-13 will be effective for the Company on January 1, 2020. Early adoption is permitted. In addition, early adoption of any removed or modified disclosures and delayed adoption of the additional disclosures until the effective date is also permitted. The Company expects to adopt the standard in the first quarter of 2020.

In June 2016, the FASB issued ASU No.  2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires a financial asset measured at amortized cost basis to be presented at the net amount expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 requires enhanced disclosures related to the significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for the Company on January 1, 2020. The Company is currently evaluating the potential impact of ASU 2016-13 on its financial statements. In that regard, the Company has formed a task force under the direction of its Chief Financial Officer. In preparation, the Company has developed new credit estimation models, processes and controls. Internal validation of the model is underway and expected to be completed early in 2019. The Company has performed test runs of the new processes and controls and expects to begin full parallel runs by mid-2019. The impact of the standard will depend on the composition of the Company’s portfolio as well as economic conditions and forecasts at the time of adoption. The adoption of ASU 2016-13 could result in an increase in the allowance for loan losses as a result of changing from an “incurred loss” model, which encompasses allowances for current known and inherent losses within the portfolio, to an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate that we establish an allowance for expected credit losses for certain debt securities and other financial assets. While we are currently unable to reasonably estimate the impact of adopting ASU 2016-13, we expect that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. The Company expects to adopt the standard in the first quarter of 2020.

(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

On April, 23, 2019, the Company entered into an agreement to acquire Pegasus Bank.  See Note (12) for additional information on this subsequent event.

On August 31, 2018 BFTower, LLC, a wholly-owned subsidiary of BancFirstpurchased Cotter Ranch Tower in Oklahoma City for the Company’s corporate headquarters for $21.0 million. Cotter Ranch Tower was subsequently renamed BancFirst Tower. BancFirst Tower consists of an aggregate of 507,000 square feet, has 36 floors and is the second tallest building in Oklahoma City. The BancFirst Tower will remain an income producing property as approximately 55% is currently leased to outside tenants. BancFirst Tower will allow the Company to consolidate operations from three locations to one and will improve operational efficiencies. Upon consolidation, the Company expects to occupy approximately 35% of BancFirst Tower, resulting in approximately 90% total occupancy.  Renovations on BancFirst Tower will be substantially completed by the end of 2020 and are expected to cost approximately $70 million. The renovation costs include substantial deferred maintenance including HVAC, plumbing, electrical, elevators, building skin and roof while also including much needed improvements to both the interior and exterior common areas including the lobby, underground and outdoor plaza. The Company could start depreciating certain components of the renovation as they are put into service as early as September 2019. The total purchase price and renovation costs were determined to be favorable to other alternatives, such as constructing new corporate headquarters. On December 14, 2018, BFTower LLC, purchased a 42.6% ownership interest in SFPG, LLC, which is the owner of a 1,568 space parking garage adjacent to BancFirst Tower, for $9.8 million.

On January 11, 2018, the Company acquired First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company, with locations in Carney, Grove, Ketchum, Luther, Tulsa and Wagoner. First Bank & Trust Company had approximately $290 million in total assets, $247 million in loans and $251 million in deposits. First Bank & Trust Company operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on February 16, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $6.3 million and goodwill of approximately $19.1 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company complements the Company’s community banking strategy by adding an additional five communities to its banking network in Oklahoma.

On January 11, 2018, the Company acquired First Chandler Corp. and its subsidiary bank, First Bank of Chandler, with two locations in Chandler. First Bank of Chandler had approximately $88 million in total assets, $66 million in loans and $79 million in deposits. First Bank of Chandler operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on September 7, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $2.2 million and goodwill of approximately $6.6 million. The effect of this acquisition was included in the consolidated financial statements of the Company from

7

the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Chandler Corp. and its subsidiary bank, First Bank of Chandler complements the Company’s community banking strategy by increasing its banking network in Oklahoma.

(3) SECURITIES

The following table summarizes the amortized cost and estimated fair values of debt securities held for investment:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
March 31, 2019	(Dollars in thousands)
Mortgage backed securities (1)	$	122	$	6	$	—	$	128
States and political subdivisions		595		—		—		595
Other securities		500		—		—		500
Total	$	1,217	$	6	$	—	$	1,223
December 31, 2018
Mortgage backed securities (1)	$	133	$	5	$	—	$	138
States and political subdivisions		795		—		—		795
Other securities		500		—		—		500
Total	$	1,428	$	5	$	—	$	1,433

The following table summarizes the amortized cost and estimated fair values of debt securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2019	(Dollars in thousands)
U.S. treasuries	$	651,860	$	2,847	$	(1,957	)	$	652,750
U.S. federal agencies		28,106		—		(152	)		27,954
Mortgage backed securities (1)		16,162		126		(576	)		15,712
States and political subdivisions		26,989		317		(67	)		27,239
Total	$	723,117	$	3,290	$	(2,752	)	$	723,655
December 31, 2018
U.S. treasuries	$	699,882	$	1,108	$	(3,524	)	$	697,466
U.S. federal agencies		30,079		—		(160	)		29,919
Mortgage backed securities (1)		16,367		114		(573	)		15,908
States and political subdivisions		27,246		277		(112	)		27,411
Total	$	773,574	$	1,499	$	(4,369	)	$	770,704

(1) Primarily consists of FHLMC, FNMA, GNMA and mortgage backed securities through U.S. agencies.

8

The maturities of debt securities held for investment and available for sale are summarized in the following table using contractual maturities. Actual maturities may differ from contractual maturities due to obligations that are called or prepaid. For purposes of the maturity table, mortgage-backed securities, which are not due at a single maturity date, have been presented at their contractual maturity.

	March 31, 2019				December 31, 2018
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	295	$	295	$	495	$	495
After one year but within five years		368		370		369		370
After five years but within ten years		552		556		562		565
After ten years		2		2		2		3
Total	$	1,217	$	1,223	$	1,428	$	1,433
Available for Sale
Contractual maturity of debt securities:
Within one year	$	403,084	$	402,210	$	411,256	$	410,327
After one year but within five years		273,033		274,838		313,416		311,924
After five years but within ten years		7,265		7,487		7,524		7,685
After ten years		39,735		39,120		41,378		40,768
Total debt securities	$	723,117	$	723,655	$	773,574	$	770,704

The following table is a summary of the Company’s book value of securities that were pledged as collateral for public funds on deposit, repurchase agreements and for other purposes as required or permitted by law:

	March 31, 2019		December 31, 2018
	(Dollarsin thousands)
Book value of pledged securities	$	418,807	$	472,053

Non-Cash investing activities

On March 31, 2019, the Company had a $50.0 million security that matured, was removed from the securities portfolio and moved into accrued interest receivable and other assets on the balance sheet. The cash for this matured security was received the following day on April 1, 2019.

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(4) LOANS AND ALLOWANCE FOR LOAN LOSSES

The following is a schedule of loans outstanding by category:

	March 31, 2019					December 31, 2018
	Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and financial:
Commercial and industrial	$	1,043,848		20.70	%	$	1,032,787		20.76	%
Oil & gas production and equipment		106,991		2.12			94,729		1.90
Agriculture		130,717		2.59			136,313		2.74
State and political subdivisions:
Taxable		73,051		1.45			76,211		1.53
Tax-exempt		49,833		0.99			48,415		0.97
Real estate:
Construction		469,826		9.32			451,224		9.07
Farmland		227,526		4.51			219,241		4.41
One to four family residences		982,605		19.49			979,170		19.68
Multifamily residential properties		68,412		1.36			65,949		1.33
Commercial		1,514,266		30.03			1,506,937		30.28
Consumer		326,002		6.46			328,069		6.59
Other (not classified above)		49,425		0.98			36,931		0.74
Total loans	$	5,042,502		100.00	%	$	4,975,976		100.00	%

The Company’s loans are mostly to customers within Oklahoma and approximately 65% of the loans are secured by real estate.  Credit risk on loans is managed through limits on amounts loaned to individual and related borrowers, underwriting standards and loan monitoring procedures. The amounts and types of collateral obtained, if any, to secure loans are based upon the Company’s underwriting standards and management’s credit evaluation. Collateral varies, but may include real estate, equipment, accounts receivable, inventory, livestock and securities. The Company’s interest in collateral is secured through filing mortgages and liens, and in some cases, by possession of the collateral.

The Company’s commercial and industrial loan category includes a small percentage of loans to companies that provide ancillary services to the oil and gas industry, such as transportation, preparation contractors and equipment manufacturers. The balance of these loans was approximately $61 million at March 31, 2019 and approximately $60 million at December 31, 2018.

Accounting policies related to appraisals, nonaccruals and charge-offs are disclosed in Note (1) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Nonperforming and Restructured Assets

The following is a summary of nonperforming and restructured assets:

	March 31,		December 31,
	2019		2018
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	2,170	$	1,916
Nonaccrual		21,594		22,603
Restructured		14,552		13,188
Total nonperforming and restructured loans		38,316		37,707
Other real estate owned and repossessed assets		6,433		6,873
Total nonperforming and restructured assets	$	44,749	$	44,580

Had nonaccrual loans performed in accordance with their original contractual terms, the Company would have recognized additional interest income of approximately $544,000 for the three months ended March 31, 2019 and approximately $542,000 for the three months ended March 31, 2018.

The Company charges interest on principal balances outstanding on restructured loans during deferral periods. The current and future financial effects of the recorded balance of loans considered to be restructured were not considered to be material.

10

Loans are segregated into classes based upon the nature of the collateral and the borrower. These classes are used to estimate the allowance for loan losses.The following table is a summary of amounts included in nonaccrual loans, segregated by class of loans. Residential real estate refers to one-to-four family real estate.

	March 31, 2019		December 31, 2018
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	769	$	838
Non-residential real estate other		1,030		187
Residential real estate permanent mortgage		1,208		954
Residential real estate all other		5,729		5,488
Commercial and financial:
Non-consumer non-real estate		5,132		5,682
Consumer non-real estate		422		437
Other loans		393		490
Acquired loans		6,911		8,527
Total	$	21,594	$	22,603

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days and Greater		Total Past Due Loans		Current Loans		Total Loans		Accruing Loans 90 Days or More Past Due
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	8,948	$	30	$	123	$	9,101	$	629,918	$	639,019	$	117
Non-residential real estate other		2,089		152		593		2,834		1,186,935		1,189,769		121
Residential real estate permanent mortgage		3,374		634		801		4,809		328,857		333,666		401
Residential real estate all other		2,239		4,002		2,327		8,568		832,865		841,433		247
Commercial and financial:
Non-consumer non-real estate		3,226		999		2,164		6,389		1,320,215		1,326,604		453
Consumer non-real estate		1,498		548		311		2,357		324,649		327,006		173
Other loans		1,485		156		92		1,733		140,687		142,420		—
Acquired loans		1,528		1,689		4,290		7,507		235,078		242,585		658
Total	$	24,387	$	8,210	$	10,701	$	43,298	$	4,999,204	$	5,042,502	$	2,170
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	5,114	$	810	$	43	$	5,967	$	620,654	$	626,621	$	—
Non-residential real estate other		2,772		32		114		2,918		1,143,210		1,146,128		—
Residential real estate permanent mortgage		2,448		653		693		3,794		324,908		328,702		430
Residential real estate all other		1,728		292		2,799		4,819		822,685		827,504		612
Commercial and financial:
Non-consumer non-real estate		3,620		702		833		5,155		1,278,499		1,283,654		282
Consumer non-real estate		1,991		565		559		3,115		323,747		326,862		325
Other loans		322		158		178		658		141,251		141,909		—
Acquired loans		5,240		1,669		4,936		11,845		282,751		294,596		267
Total	$	23,235	$	4,881	$	10,155	$	38,271	$	4,937,705	$	4,975,976	$	1,916

Impaired Loans

Loans are considered impaired when, based on current information and events, it is probable the Company will be unable to collect the full amount of scheduled principal and interest payments in accordance with the original contractual terms of the loan agreement. If a loan is impaired, a specific valuation allowance may be allocated, if necessary, so that the loan is reported, net of

11

allowance for loss, at the present value of future cash flows using the loan’s existing rate, or the fair value of collateral if repayment is expected solely from the collateral.

The following table presents impaired loans, segregated by class of loans. During the period ended March 31, 2019 and March 31, 2018, no material amount of interest income was recognized on impaired loans subsequent to their classification as impaired.

	Impaired Loans
	Unpaid Principal Balance		Recorded Investment with Allowance		Related Allowance		Average Recorded Investment
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	7,730	$	7,619	$	228	$	7,362
Non-residential real estate other		1,976		1,722		212		1,247
Residential real estate permanent mortgage		1,871		1,619		143		1,618
Residential real estate all other		7,153		6,854		2,478		7,024
Commercial and financial:
Non-consumer non-real estate		18,769		11,120		857		10,976
Consumer non-real estate		767		660		133		724
Other loans		694		422		31		369
Acquired loans		12,764		10,228		2		11,078
Total	$	51,724	$	40,244	$	4,084	$	40,398
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	7,126	$	6,933	$	202	$	7,739
Non-residential real estate other		949		757		50		6,057
Residential real estate permanent mortgage		1,789		1,545		127		1,650
Residential real estate all other		7,177		6,862		2,433		7,154
Commercial and financial:
Non-consumer non-real estate		18,507		10,977		881		12,140
Consumer non-real estate		928		829		131		846
Other loans		710		490		35		481
Acquired loans		12,846		9,864		2		11,050
Total	$	50,032	$	38,257	$	3,861	$	47,117

Credit Risk Monitoring and Loan Grading

The Company considers various factors to monitor the credit risk in the loan portfolio including volume and severity of loan delinquencies, nonaccrual loans, internal grading of loans, historical loan loss experience and economic conditions.

An internal risk grading system is used to indicate the credit risk of loans. The loan grades used by the Company are for internal risk identification purposes and do not directly correlate to regulatory classification categories or any financial reporting definitions.

The general characteristics of the risk grades are disclosed in Note (5) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

12

The following table presents internal loan grading by class of loans:

	Internal Loan Grading
	Grade
		1		2		3		4		5	Total
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	459,381	$	153,357	$	25,456	$	825	$	—	$	639,019
Non-residential real estate other		956,483		206,591		25,665		1,030		—		1,189,769
Residential real estate permanent mortgage		283,951		41,010		7,080		1,625		—		333,666
Residential real estate all other		659,846		159,703		15,943		5,941		—		841,433
Commercial and financial:
Non-consumer non-real estate		1,033,690		264,192		24,726		3,996		—		1,326,604
Consumer non-real estate		302,263		21,860		2,246		637		—		327,006
Other loans		136,737		4,317		1,348		18		—		142,420
Acquired loans		127,474		94,135		13,455		7,206		315		242,585
Total	$	3,959,825	$	945,165	$	115,919	$	21,278	$	315	$	5,042,502
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	451,059	$	157,715	$	16,949	$	898	$	—	$	626,621
Non-residential real estate other		932,454		188,341		25,146		187		—		1,146,128
Residential real estate permanent mortgage		279,870		39,806		7,401		1,625		—		328,702
Residential real estate all other		644,217		162,003		15,232		6,052		—		827,504
Commercial and financial:
Non-consumer non-real estate		1,000,089		264,134		15,128		4,303		—		1,283,654
Consumer non-real estate		302,217		21,600		2,255		790		—		326,862
Other loans		136,132		5,542		116		119		—		141,909
Acquired loans		156,008		109,075		20,884		8,284		345		294,596
Total	$	3,902,046	$	948,216	$	103,111	$	22,258	$	345	$	4,975,976

Allowance for Loan Losses Methodology

The allowance for loan losses (“ALL”) methodology is disclosed in Note (5) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

The following table details activity in the ALL by class of loans for the period presented. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	6,328	$	(6	)	$	1	$	(5	)	$	332		$	6,655
Non-residential real estate other		11,027		(6	)		—		(6	)		341			11,362
Residential real estate permanent mortgage		3,261		(63	)		5		(58	)		58			3,261
Residential real estate all other		10,673		(52	)		2		(50	)		423			11,046
Commercial and financial:
Non-consumer non-real estate		13,151		(70	)		67		(3	)		1,261			14,409
Consumer non-real estate		3,065		(120	)		71		(49	)		56			3,072
Other loans		2,423		—			35		35			(50	)		2,408
Acquired loans		1,461		(26	)		4		(22	)		(737	)		702
Total	$	51,389	$	(343	)	$	185	$	(158	)	$	1,684		$	52,915

13

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2018
Real estate:
Non-residential real estate owner occupied	$	6,195	$	(19	)	$	1	$	(18	)	$	473		$	6,650
Non-residential real estate other		10,519		(1	)		39		38			(9	)		10,548
Residential real estate permanent mortgage		3,226		(56	)		3		(53	)		108			3,281
Residential real estate all other		9,672		(90	)		3		(87	)		246			9,831
Commercial and financial:
Non-consumer non-real estate		15,334		(156	)		13		(143	)		(406	)		14,785
Consumer non-real estate		2,793		(250	)		80		(170	)		76			2,699
Other loans		2,481		—			12		12			(157	)		2,336
Acquired loans		1,446		(27	)		18		(9	)		(17	)		1,420
Total	$	51,666	$	(599	)	$	169	$	(430	)	$	314		$	51,550

The following table details the amount of ALL by class of loans for the period presented, detailed on the basis of the impairment methodology used by the Company.

	ALL
	March 31, 2019				December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied.	$	986	$	5,669	$	669	$	5,659
Non-residential real estate other		1,024		10,338		1,119		9,908
Residential real estate permanent mortgage		457		2,804		505		2,756
Residential real estate all other		3,691		7,355		3,413		7,260
Commercial and financial:
Non-consumer non-real estate		3,069		11,340		2,114		11,037
Consumer non-real estate		375		2,697		374		2,691
Other loans		26		2,382		65		2,358
Acquired loans		—		702		—		1,461
Total	$	9,628	$	43,287	$	8,259	$	43,130

14

The following table details the loans outstanding by class of loans for the period presented, on the basis of the impairment methodology used by the Company.

	Loans
	March 31, 2019						December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality		Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	26,281	$	612,738	$	—	$	17,846	$	608,775	$	—
Non-residential real estate other		26,695		1,163,074		—		25,333		1,120,795		—
Residential real estate permanent mortgage		8,705		324,961		—		9,026		319,676		—
Residential real estate all other		21,883		819,550		—		21,285		806,219		—
Commercial and financial:
Non-consumer non-real estate		28,722		1,297,882		—		19,432		1,264,222		—
Consumer non-real estate		2,875		324,131		—		3,093		323,769		—
Other loans		26		142,394		—		209		141,700		—
Acquired loans		14,057		221,608		6,920		22,132		265,084		7,380
Total	$	129,244	$	4,906,338	$	6,920	$	118,356	$	4,850,240	$	7,380

Non-Cash Transfers from Loans and Premises and Equipment

Transfers from loans and premises and equipment to other real estate owned and repossessed assets are non-cash transactions, and are not included in the statements of cash flow.

Transfers from loans and premises and equipment to other real estate owned and repossessed assets during the periods presented, are summarized as follows:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Other real estate owned	$	591	$	402
Repossessed assets		301		220
Total	$	892	$	622

(5) INTANGIBLE ASSETS

The following is a summary of intangible assets:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
As of March 31, 2019
Core deposit intangibles	$	25,907	$	(11,785	)	$	14,122
Customer relationship intangibles		5,699		(4,202	)		1,497
Mortgage servicing intangibles		392		(310	)		82
Total	$	31,998	$	(16,297	)	$	15,701
As of December 31, 2018
Core deposit intangibles	$	25,907	$	(11,113	)	$	14,794
Customer relationship intangibles		5,699		(4,115	)		1,584
Mortgage servicing intangibles		397		(305	)		92
Total	$	32,003	$	(15,533	)	$	16,470

15

The following is a summary of goodwill by business segment:

					Other		Executive,
	Metropolitan		Community		Financial		Operations
	Banks		Banks		Services		& Support		Consolidated
	(Dollars in thousands)
Three months ended March 31, 2019
Balance at beginning and end of period	$	13,767	$	59,894	$	5,464	$	624	$	79,749

Additional information for intangible assets can be found in Note (7) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

(6)     LEASES

Lessee

On January 1, 2019, the Company adopted ASU No. 2016-02, “Leases - (Topic 842),” which requires the recognition of the Company’s operating leases on its balance sheet. See Note (1) for additional information.

The Company has operating leases, which primarily consist of office space in buildings, ATM locations, storage facilities, parking lots and land on which it owns buildings. Rent expense for all operating leases totaled approximately $357,000 and $381,000 for the three months ended March 31, 2019 and March 31, 2018, respectively. As of March 31, 2019, right of use lease asset, which is included in accrued interest receivable and other assets on the balance sheet totaled $4.3 million, and the related lease liability, which is included in accrued interest payable and other liabilities on the balance sheet totaled $4.3 million. There have been no significant changes in our expected future minimum lease payments since December 31, 2018. The future minimum lease payments are disclosed in Note (19) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. As of March 31, 2019, our operating leases have a weighted-average remaining lease term of 4.4 years and a weighted-average discount rate of 3.6 percent.

Maturity of Operating Lease Liabilities

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$                                               97
2020	1,024
2021	150
2022	1,288
2023	955
Thereafter	737
Operating Lease Liability	$                                          4,251

Lessor

The Company is a lessor of operating leases, which primarily consist of office space in buildings and parking lots. These assets are classified on the balance sheet as premises and equipment. The Company had operating lease revenue of $1.5 million during the first quarter of 2019, which is included in occupancy, net on the consolidated statement of comprehensive income.

Future Minimum Lease Payments to be received

The Company does not have in place leases beyond 2023. The following table presents the scheduled minimum future contractual rent to be received under the remaining non-cancelable term of the operating leases:

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$	3,126
2020	2,524
2021	1,624
2022	973
2023	509
Total Future Minimum Lease Payments	$	8,756

(7) STOCK-BASED COMPENSATION

16

The Company adopted a nonqualified incentive stock option plan (the “BancFirst ISOP”) in May 1986. The Company has amended the BancFirst ISOP since 1986 to increase the number of shares to be issued under the plan to 6,400,000 shares. At March 31, 2019, there were265,470 sharesavailable for future grants. The BancFirst ISOP will terminate on December 31, 2019, if not extended. The options vest and are exercisable beginning four years from the date of grant at the rate of 25% per year for four years. Options expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2019 will become exercisable through the year 2026. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant.

In June 1999, the Company adopted the BancFirst Corporation Non-Employee Directors’ Stock Option Plan (the “BancFirst Directors’ Stock Option Plan”). Each non-employee director is granted an option for 10,000 shares. The Company has amended the BancFirst Directors’ Stock Option Plan since 1999 to increase the number of shares to be issued under the plan to 520,000 shares. At March 31, 2019, there were 40,000 shares available for future grants. The BancFirst Directors’ Stock Option Plan will terminate on December 31, 2019, if not extended. The options vest and are exercisable beginning one year from the date of grant at the rate of 25% per year for four years, and expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2019 will become exercisable through the year 2023. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant.

The Company currently uses newly issued shares for stock option exercises, but reserves the right to use shares purchased under the Company’s Stock Repurchase Program (the “SRP”) in the future.

The following table is a summary of the activity under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

						Wgtd. Avg.
				Wgtd. Avg.		Remaining	Aggregate
				Exercise		Contractual	Intrinsic
	Options			Price		Term	Value
	(Dollars in thousands, except option data)
Three Months Ended March 31, 2019
Outstanding at December 31, 2018		1,216,700		$	28.48
Options granted		40,000			55.38
Options exercised		(5,500	)		28.35
Options canceled, forfeited, or expired		(22,500	)		51.83
Outstanding at March 31, 2019		1,228,700			28.93	9.39 Yrs	$	28,536
Exercisable at March 31, 2019		613,700			21.78	6.98 Yrs	$	18,639

The following table has additional information regarding options exercised under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Total intrinsic value of options exercised		$             145		$          2,860
Cash received from options exercised		156		1,233
Tax benefit realized from options exercised		37		729

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model and is based on certain assumptions including risk-free rate of return, dividend yield, stock price volatility and the expected term.  The fair value of each option is expensed over its vesting period.

The following table is a summary of the Company’s recorded stock-based compensation expense:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Stock-based compensation expense	$	174	$	306
Tax benefit		44		78
Stock-based compensation expense, net of tax	$	130	$	228

17

The Company will continue to amortize the unearned stock-based compensation expense over the remaining vesting period of approximately seven years.  The following table shows the unearned stock-based compensation expense:

	March 31, 2019
	(Dollars in thousands)
Unearned stock-based compensation expense	$	3,437

The following table shows the assumptions used for computing stock-based compensation expense under the fair value method on options granted during the periods presented:

	Three Months Ended March 31,
	2019		2018
Weighted average grant-date fair value per share of options granted	$	13.67	$	13.98
Risk-free interest rate	2.62 to 2.76%		2.55 to 2.92%
Dividend yield	2.00%		2.00%
Stock price volatility	22.93 to 22.96%		23.05 to 23.18%
Expected term	10 Yrs		10 Yrs

The risk-free interest rate is determined by reference to the spot zero-coupon rate for the U.S. Treasury security with a maturity similar to the expected term of the options. The dividend yield is the expected yield for the expected term.  The stock price volatility is estimated from the recent historical volatility of the Company’s stock. The expected term is estimated from the historical option exercise experience. The Company accounts for forfeitures as they occur.

In May 1999, the Company adopted the BancFirst Corporation Directors’ Deferred Stock Compensation Plan (the “BancFirst Deferred Stock Compensation Plan”). The Company has amended the BancFirst Deferred Stock Compensation Plan since 1999 to increase the number of shares to be issued under the plan to 222,220 shares. The BancFirst Deferred Stock Compensation Plan will terminate on December 31, 2019, if not extended. Under the plan, directors and members of the community advisory boards of the Company and its subsidiaries may defer up to 100% of their board fees. They are credited for each deferral with a number of stock units based on the current market price of the Company’s stock, which accumulate in an account until such time as the director or community board member terminates serving as a board member. Shares of common stock of the Company are then distributed to the terminating director or community board member based upon the number of stock units accumulated in his or her account. There were 8,362 and 2,842 shares of common stock distributed from the BancFirst Deferred Stock Compensation Plan during the three months ended March 31, 2019 and March 31, 2018, respectively.

A summary of the accumulated stock units is as follows:

	March 31,		December 31,
	2019		2018
Accumulated stock units		137,543		143,347
Average price	$	25.70	$	24.91

(8) STOCKHOLDERS’ EQUITY

In November 1999, the Company adopted a Stock Repurchase Program (the “SRP”). The SRP may be used as a means to increase earnings per share and return on equity, to purchase treasury stock for the exercise of stock options or for distributions under the Deferred Stock Compensation Plan, to provide liquidity for optionees to dispose of stock from exercises of their stock options, and to provide liquidity for stockholders wishing to sell their stock. All shares repurchased under the SRP have been retired and not held as treasury stock. The timing, price and amount of stock repurchases under the SRP may be determined by management and approved by the Company’s Executive Committee.

18

The following table is a summary of the shares under the program:

	Three Months Ended March 31,
	2019		2018
Number of shares repurchased		—		—
Average price of shares repurchased	$	—	$	—
Shares remaining to be repurchased		148,736		300,000

The Company and BancFirst are subject to risk-based capital guidelines issued by the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation (“FDIC”). These guidelines are used to evaluate capital adequacy and involve both quantitative and qualitative evaluations of the Company’s and BancFirst’s assets, liabilities and certain off-balance-sheet items calculated under regulatory practices. Failure to meet the minimum capital requirements can initiate certain mandatory or discretionary actions by the regulatory agencies that could have a direct material effect on the Company’s financial statements. Management believes that as of March 31, 2019, the Company and BancFirst met all capital adequacy requirements to which they are subject.  The actual and required capital amounts and ratios are shown in the following table:

				Required							To Be Well
				For Capital				With			Capitalized Under
				Adequacy				Capital Conservation			Prompt Corrective
	Actual			Purposes				Buffer			Action Provisions
	Amount		Ratio	Amount		Ratio		Amount		Ratio	Amount		Ratio
	(Dollars in thousands)
As of March 31, 2019:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	911,073	16.32%	$	446,687		8.00%	$	586,277	10.50%	N/A		N/A
BancFirst		788,443	14.14%		445,937		8.00%		585,292	10.50%	$	557,421		10.00%
Common Equity Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	832,158	14.90%	$	251,262		4.50%	$	390,852	7.00%	N/A		N/A
BancFirst		715,528	12.84%		250,839		4.50%		390,194	7.00%	$	362,323		6.50%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	858,158	15.37%	$	335,016		6.00%	$	474,605	8.50%	N/A		N/A
BancFirst		735,528	13.20%		334,452		6.00%		473,808	8.50%	$	445,937		8.00%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	858,158	11.38%	$	301,620		4.00%	N/A		N/A	N/A		N/A
BancFirst		735,528	9.77%		301,212		4.00%	N/A		N/A	$	376,514		5.00%

As of March 31, 2019, the most recent notification from the Federal Reserve Bank of Kansas City and the FDIC categorized BancFirst as “well capitalized” under the regulatory framework from prompt corrective action. The Company’s trust preferred securities have continued to be included in Tier 1 capital as the Company’s total assets do not exceed $15 billion. There are no conditions or events since the most recent notifications of BancFirst’s capital category that management believes would materially change its category under capital requirements existing as of the report date.

Basel III Capital Rules

Under the Basel III Capital Rules, in order to avoid limitations on capital distributions, including dividend payments and certain discretionary bonus payments to executive officers, a banking organization must hold a capital conservation buffer composed of CET1 capital above its minimum risk-based capital requirements. The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and was phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reached 2.5% on January 1, 2019). As of March 31, 2019, the Company and BancFirst met all capital adequacy requirements under the Basel III Capital Rules.

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(9) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share based on weighted-average shares outstanding are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended March 31, 2019
Basic
Income available to common stockholders	$	31,837		32,612,399	$	0.98
Dilutive effect of stock options		—		680,453
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	31,837		33,292,852	$	0.96
Three Months Ended March 31, 2018
Basic
Income available to common stockholders	$	29,620		32,574,251	$	0.91
Dilutive effect of stock options		—		743,493
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	29,620		33,317,744	$	0.89

The following table shows the number of options that were excluded from the computation of diluted net income per common share for each period because the options were anti-dilutive for the period:

	Shares
Three Months Ended March 31, 2019		180,000
Three Months Ended March 31, 2018		113,278

(10) FAIR VALUE MEASUREMENTS

Accounting standards define fair value as the price that would be received to sell an asset or the price paid to transfer a liability in the principal or most advantageous market available to the entity in an orderly transaction between market participants on the measurement date.

FASB Accounting Standards Codification (“ASC”) Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs.  The fair value hierarchy is as follows:

• Level 1 Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset and liability, either directly or indirectly, for substantially the full term of the financial instrument.

• Level 3 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 values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category includes certain impaired loans, repossessed assets, other real estate owned, goodwill and other intangible assets.

Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis

A description of the valuation methodologies and key inputs used to measure financial assets and financial liabilities at fair value on a recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to the following categories of the Company’s financial assets and financial liabilities.

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Securities Available for Sale

Securities classified as available for sale are reported at fair value. U.S. Treasuries are valued using Level 1 inputs. Other securities available for sale including U.S. federal agencies, registered mortgage backed securities and state and political subdivisions are valued using prices from an independent pricing service utilizing Level 2 data. 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. The Company also invests in private label mortgage backed securities for which observable information is not readily available. These securities are reported at fair value utilizing Level 3 inputs. For these securities, management determines the fair value based on replacement cost, the income approach or information provided by outside consultants or lead investors.

The Company reviews the prices for Level 1 and Level 2 securities supplied by the independent pricing service for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, the Company does not purchase investment portfolio securities that are esoteric or that have complicated structures. The Company’s portfolio primarily consists of traditional investments including U.S. Treasury obligations, federal agency mortgage pass-through securities, general obligation municipal bonds and a small amount of municipal revenue bonds. Pricing for such instruments is fairly generic and is easily obtained. For in-state bond issues that have relatively low issue sizes and liquidity, the Company utilizes the same parameters for pricing mentioned in the preceding paragraph adjusted for the specific issue. Periodically, the Company will validate prices supplied by the independent pricing service by comparison to prices obtained from third party sources.

Derivatives

Derivatives are reported at fair value utilizing Level 2 inputs. The Company obtains dealer and market quotations to value its oil and gas swaps and options.  The Company utilizes dealer quotes and observable market data inputs to substantiate internal valuation models.

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of the periods presented, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:

	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(Dollars in thousands)
March 31, 2019
Securities available for sale:
U.S. Treasury	$	652,750	$	—	$	—	$	652,750
U.S. federal agencies		—		27,954		—		27,954
Mortgage-backed securities		—		2,311		13,401		15,712
States and political subdivisions		—		27,239		—		27,239
Derivative assets		—		51		—		51
Derivative liabilities		—		49		—		49
December 31, 2018
Securities available for sale:
U.S. Treasury	$	697,466	$	—	$	—	$	697,466
U.S. federal agencies		—		29,919		—		29,919
Mortgage-backed securities		—		2,465		13,443		15,908
States and political subdivisions		—		27,411		—		27,411
Derivative assets		—		252		—		252
Derivative liabilities		—		238		—		238

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The changes in Level 3 assets measured at estimated fair value on a recurring basis during the periods presented were as follows:

	Three Months Ended March 31,			Twelve Months Ended December 31,
	2019			2018
	(Dollars in thousands)
Balance at the beginning of the year	$	13,443		$	14,467
Settlements		(39	)		(1,037	)
Total unrealized (losses) gains		(3	)		13
Balance at the end of the period	$	13,401		$	13,443

The Company’s policy is to recognize transfers in and transfers out of Levels 1, 2 and 3 as of the end of the reporting period. During the three months ended March 31, 2019 and 2018, the Company did not transfer any securities between levels in the fair value hierarchy.

Financial Assets and Financial Liabilities Measured at Fair Value on a Nonrecurring Basis

Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, 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). These financial assets and financial liabilities are reported at fair value utilizing Level 3 inputs.

The Company invests in equity securities without readily determinable fair values and utilizes Level 3 inputs. Beginning January 1, 2018, upon adoption of ASU 2016-01, these securities are reported at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The realized and unrealized gains and losses are reported as securities transactions in the noninterest income section of the consolidated statements of comprehensive income.

Impaired loans are reported at the fair value of the underlying collateral if repayment is dependent on liquidation of the collateral. In no case does the fair value of an impaired loan exceed the fair value of the underlying collateral. The impaired loans are adjusted to fair value through a specific allocation of the allowance for loan losses or a direct charge-down of the loan.

Repossessed assets, upon initial recognition, are measured and adjusted to fair value through a charge-off to the allowance for possible loan losses based upon the fair value of the repossessed asset.

Other real estate owned is revalued at fair value subsequent to initial recognition, with any losses recognized in net expense from other real estate owned.

The following table summarizes assets measured at fair value on a nonrecurring basis. The fair value represents end of period values, which approximate fair value measurements that occurred on various measurement dates throughout the period:

	Total Fair Value
	Level 3
	(Dollars in thousands)
As of and for the Year-to-date Period Ended March 31, 2019
Equity securities	$	9,239
Impaired loans (less specific allowance)		36,160
Repossessed assets		184
Other real estate owned		560
As of and for the Year-to-date Period Ended December 31, 2018
Equity securities	$	7,521
Impaired loans (less specific allowance)		34,396
Repossessed assets		183
Other real estate owned		4,683

Estimated Fair Value of Financial Instruments

The Company is required under current authoritative accounting guidance to disclose the estimated fair value of their financial instruments that are not recorded at fair value. For the Company, as for most financial institutions, substantially all of its assets and

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liabilities are considered financial instruments. A financial instrument is defined as cash, evidence of an ownership interest in an entity or a contract that creates a contractual obligation or right to deliver or receive cash or another financial instrument from a second entity. The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

Cash and Cash Equivalents Include: Cash and Due from Banks and Interest-Bearing Deposits

The carrying amount of these short-term instruments is a reasonable estimate of fair value.

Securities Held for Investment

For securities held for investment, which are generally traded in secondary markets, fair values are based on quoted market prices or dealer quotes, if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities making adjustments for credit or liquidity if applicable.

Loans Held For Sale

The Company originates mortgage loans to be sold.  At the time of origination, the acquiring bank has already been determined and the terms of the loan, including interest rate, have already been set by the acquiring bank, allowing the Company to originate the loan at fair value. Mortgage loans are generally sold within 30 days of origination. Loans held for sale are valued using Level 2 inputs.  Gains or losses recognized upon the sale of the loans are determined on a specific identification basis.

Loans

To determine the fair value of loans, the Company uses an exit price calculation, which takes into account factors such as liquidity, credit and the nonperformance risk of loans. For certain homogeneous categories of loans, such as some residential mortgages, fair values are estimated using the quoted market prices for securities backed by similar loans, adjusted for differences in loan characteristics. The fair values of other types of loans are estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities.

Deposits

The fair values of transaction and savings accounts are the amounts payable on demand at the reporting date. The fair values of fixed-maturity certificates of deposit are estimated using the rates currently offered for deposits of similar remaining maturities.

Short-term Borrowings

The amounts payable on these short-term instruments are reasonable estimates of fair value.

Junior Subordinated Debentures

The fair values of junior subordinated debentures are estimated using the rates that would be charged for junior subordinated debentures of similar remaining maturities.

Loan Commitments and Letters of Credit

The fair values of commitments are estimated using the fees currently charged to enter into similar agreements, taking into account the terms of the agreements. The fair values of letters of credit are based on fees currently charged for similar agreements.

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The estimated fair values of the Company’s financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value, are as follows:

	March 31,				December 31,
	2019				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,477,405	$	1,477,405	$	1,424,255	$	1,424,255
Securities held for investment		717		723		928		933
Loans held for sale		7,719		7,719		8,174		8,174
Level 3 inputs:
Securities held for investment		500		500		500		500
Loans, net of allowance for loan losses		4,989,587		4,988,322		4,924,587		4,901,159
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		6,706,386		6,816,792		6,605,495		6,713,542
Short-term borrowings		5,200		5,200		1,675		1,675
Junior subordinated debentures		26,804		29,131		26,804		29,549
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				2,219				2,158
Letters of credit				410				421

Non-financial Assets and Non-financial Liabilities Measured at Fair Value

The Company has no non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets and non-financial liabilities measured at fair value on a nonrecurring basis include intangible assets (excluding mortgage service rights, which are valued periodically) and other non-financial long-lived assets measured at fair value and adjusted for impairment. These items are evaluated at least annually for impairment. The overall levels of non-financial assets and non-financial liabilities measured at fair value on a nonrecurring basis were not considered to be significant to the Company at March 31, 2019 or December 31, 2018.

(11)SEGMENT INFORMATION

The Company evaluates its performance with an internal profitability measurement system that measures the profitability of its business units on a pre-tax basis. The four principal business units are metropolitan banks, community banks, other financial services and executive, operations and support. Metropolitan and community banks offer traditional banking products such as commercial and retail lending and a full line of deposit accounts. Metropolitan banks consist of banking locations in the metropolitan Oklahoma City and Tulsa areas.  Community banks consist of banking locations in communities throughout Oklahoma. Other financial services are specialty product business units including guaranteed small business lending, residential mortgage lending, trust services, securities brokerage, electronic banking and insurance. The executive, operations and support groups represent executive management, operational support and corporate functions that are not allocated to the other business units.

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The results of operations and selected financial information for the four business units are as follows:

	Metropolitan Banks		Community Banks		Other Financial Services		Executive, Operations & Support			Eliminations			Consolidated
	(Dollars in thousands)
Three Months Ended March 31, 2019
Net interest income	$	21,353	$	43,407	$	1,171	$	972		$	—		$	66,903
Noninterest income		4,209		14,885		9,873		35,521			(32,487	)		32,001
Income before taxes		15,369		28,045		4,499		25,023			(31,922	)		41,014
Three Months Ended March 31, 2018
Net interest income (expense)	$	20,304	$	41,382	$	1,475	$	(126	)	$	—		$	63,035
Noninterest income		3,941		13,953		9,624		32,194			(29,602	)		30,110
Income before taxes		14,736		26,348		5,043		19,915			(29,101	)		36,941
Total Assets:
March 31, 2019	$	2,763,523	$	4,995,379	$	69,430	$	912,166		$	(1,031,498	)	$	7,709,000
December 31, 2018		2,743,876		4,892,946		84,706		861,782			(1,009,052	)		7,574,258

The financial information for each business unit is presented on the basis used internally by management to evaluate performance and allocate resources.  The Company utilizes a transfer pricing system to allocate the benefit or cost of funds provided or used by the various business units.  Certain services provided by the support group to other business units, such as item processing, are allocated at rates approximating the cost of providing the services.  Eliminations are adjustments to consolidate the business units and companies. Capital expenditures are generally charged to the business unit using the asset.

(12) SUBSEQUENT EVENT

On April 23, 2019 BancFirst Corporation entered into an agreement to acquire Pegasus Bank (“Pegasus”), for an aggregate cash purchase price of $122.0 million. Pegasus is a Texas chartered bank with three banking locations in Dallas, Texas. As of December 31, 2018, Pegasus had approximately $639.1 million in total assets, $367.4 million in loans and $595.3 million in deposits. The acquisition is expected to be completed during the third quarter of 2019 and is subject to regulatory approval. Upon acquisition, Pegasus will continue to operate as “Pegasus Bank” under a separate Texas charter and remain an independent subsidiary of BancFirst Corporation governed by its existing board of directors. BancFirst Corporation intends to provide an appropriate amount of capital or other support to increase Pegasus’ ability to approve larger loans and allow Pegasus to continue to grow their assets.

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

The following discussion and analysis presents factors that the Company believes are relevant to an assessment and understanding of the Company’s consolidated financial position and results of operations. This discussion and analysis should be read in conjunction with the Company’s December 31, 2018 consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 and the Company’s consolidated financial statements and the related Notes included in Item 1.

FORWARD LOOKING STATEMENTS

The Company may make forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 with respect to earnings, credit quality, corporate objectives, interest rates and other financial and business matters.  Forward-looking statements include estimates and give management’s current expectations or forecasts of future events.  The Company cautions readers that these forward-looking statements are subject to numerous assumptions, risks and uncertainties, including economic conditions; the performance of financial markets and interest rates; legislative and regulatory actions and reforms; competition; as well as other factors, all of which change over time. Examples of forward-looking statements include, but are not limited to: (i) projections of revenues, expenses, income or loss, earnings or loss per share, the payment or nonpayment of dividends, capital structure and other financial items; (ii) statements of plans, objectives and expectations, including those relating to products or services; (iii) statements of future economic performance; and (iv) statements of assumptions underlying such statements. Words such as “believes”, “anticipates”, “expects”, “intends”, “targeted”, “continue”, “remain”, “will”, “should”, “may” and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements.

Forward-looking statements involve risks and uncertainties that may cause actual results to differ materially from those in such statements. Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

• Local, regional, national and international economic conditions and the impact they may have on the Company and its customers and the Company’s assessment of that impact.

• Changes in the mix of loan geographies, sectors and types or the level of non-performing assets and charge-offs.

• Inflation, interest rate, crude oil price, securities market and monetary fluctuations.

• The effect of changes in laws and regulations (including laws and regulations concerning taxes, banking, securities and insurance) with which the Company must comply.

• Impairment of the Company’s goodwill or other intangible assets.

• Changes in consumer spending, borrowing and savings habits.

• Changes in the financial performance and/or condition of the Company’s borrowers.

• Technological changes.

• Acquisitions and integration of acquired businesses.

• The effect of changes in accounting policies and practices, as may be adopted by the regulatory agencies, as well as the Public Company Accounting Oversight Board, the Financial Accounting Standards Board and other accounting standard setters.

• The Company’s success at managing the risks involved in the foregoing items.

Actual results may differ materially from forward-looking statements.

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SUMMARY

BancFirst Corporation’s net income for the first quarter of 2019 was $31.8 million, compared to $29.6 million for the first quarter of 2018. Diluted net income per common share was $0.96 and $0.89 for the first quarter of 2019 and 2018, respectively. On January 11, 2018 the Company completed the acquisitions of two Oklahoma banking corporations. Consequently, the first quarter of 2018 included one-time acquisition related expenses of approximately $2.2 million.

The Company’s net interest income for the first quarter of 2019 increased to $66.9 million, compared to $63.0 million for the first quarter of 2018. The net interest margin for the quarter was 3.85%, compared to 3.66% a year ago. The increase in margin was primarily due to the increase in the federal funds rate throughout 2018. The Company’s provision for loan losses for the first quarter of 2019 was $1.7 million, compared to $314,000 a year ago. The increase in the provision was primarily due to downgrades of a few commercial loans and loan growth during the quarter. Net charge-offs for the quarter were less than 0.01% of average loans, compared to 0.01% for the first quarter of 2018. Noninterest income for the quarter totaled $32.0 million, compared to $30.1 million last year. Noninterest expense for the quarter totaled $56.2 million, compared to $55.9 million last year. The slight increase in noninterest expenses was due to salary increases in 2019 offset by a decrease in other expenses due to nonrecurring acquisition related expenses in 2018. The Company’s effective tax rate was 22.4% compared to 19.8% for the first quarter of 2018. The lower effective tax rate for the first quarter of 2018 was due to the exercise of stock options.

At March 31, 2019, the Company’s total assets were $7.7 billion, an increase of $134.7 million from December 31, 2018. Securities of $724.9 million were down $47.3 million from December 31, 2018, due to maturing U.S. treasury securities. Loans totaled $5.1 billion, an increase of $66.1 million from December 31, 2018. Deposits totaled $6.7 billion, an increase of $100.9 million from the December 31, 2018. The Company’s total stockholders’ equity was $927.9 million, an increase of $25.1 million over December 31, 2018.

Asset quality remained strong during the first quarter of 2019. Nonperforming and restructured assets represented 0.58% of total assets at March 31, 2019 and 0.59% at December 31, 2018. The allowance to total loans was 1.05% up slightly from 1.03% at year-end 2018. The allowance to nonperforming and restructured loans was 138.10% compared to 136.29% at year-end 2018.

On April 23, 2019 BancFirst Corporation entered into an agreement to acquire Pegasus, for an aggregate cash purchase price of $122.0 million. Pegasus is a Texas chartered bank with three banking locations in Dallas, Texas. As of December 31, 2018, Pegasus had approximately $639.1 million in total assets, $367.4 million in loans and $595.3 million in deposits. The acquisition is expected to be completed during the third quarter of 2019 and is subject to regulatory approval. Upon acquisition, Pegasus will continue to operate as “Pegasus Bank” under a separate Texas charter and remain an independent subsidiary of BancFirst Corporation governed by its existing board of directors. BancFirst Corporation intends to provide an appropriate amount of capital or other support to increase Pegasus’ ability to approve larger loans and allow Pegasus to continue to grow their assets.

On August 31, 2018, BFTower, LLC, a wholly-owned subsidiary of BancFirst, purchased the Cotter Ranch Tower in Oklahoma City for the Company’s corporate headquarters for $21.0 million. Cotter Ranch Tower was subsequently renamed BancFirst Tower. BancFirst Tower consists of an aggregate of 507,000 square feet, has 36 floors and is the second tallest building in Oklahoma City. The BancFirst Tower will remain an income producing property as approximately 55% is currently leased to outside tenants. BancFirst Tower will allow the Company to consolidate operations from three locations to one and will improve operational efficiencies. Upon consolidation, the Company expects to initially occupy approximately 35% of the BancFirst Tower, resulting in approximately 90% total occupancy. Renovations on BancFirst Tower will be substantially completed by the end of 2020 and are expected to cost approximately $70 million. The renovation costs include substantial deferred maintenance including HVAC, plumbing, electrical, elevators, building skin and roof while also including much needed improvements to both the interior and exterior common areas including the lobby, underground and outdoor plaza. The Company could start depreciating certain components of the renovation as they are put into service as early as September 2019. The total purchase price and renovation costs were determined to be favorable to other alternatives, such as constructing new corporate headquarters. On December 14, 2018, BFTower LLC, purchased a 42.6% ownership interest in SPFG, LLC, which is the owner of a 1,568 space parking garage adjacent to BancFirst Tower, for $9.8 million.

On January 11, 2018, the Company completed the acquisitions of two Oklahoma banking corporations. First Wagoner Corporation and its subsidiary bank, First Bank & Trust Company, and First Chandler Corp. and its subsidiary bank, First Bank of Chandler, had combined total assets of approximately $378 million. The Company exchanged a combination of cash and stock for these transactions.

FUTURE APPLICATION OF ACCOUNTING STANDARDS

See Note (1) of the Notes to Consolidated Financial Statements for a discussion of recently issued accounting pronouncements.

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SEGMENT INFORMATION

See Note (11) of the Notes to Consolidated Financial Statements for disclosures regarding business segments.

RESULTS OF OPERATIONS

Selected income statement data and other selected data for the comparable periods were as follows:

BANCFIRST CORPORATION

SELECTED CONSOLIDATED FINANCIAL DATA

(Unaudited)

(Dollars in thousands, except per share data)

	Three Months Ended March 31,
	2019			2018
Income Statement Data
Net interest income	$	66,903		$	63,035
Provision for loan losses		1,684			314
Securities transactions		—			(14	)
Total noninterest income		32,001			30,110
Salaries and employee benefits		36,171			34,190
Total noninterest expense		56,206			55,890
Net income		31,837			29,620
Per Common Share Data
Net income – basic	$	0.98		$	0.91
Net income – diluted		0.96			0.89
Cash dividends		0.30			0.21
Performance Data
Return on average assets		1.69	%		1.60	%
Return on average stockholders’ equity		14.08			14.60
Cash dividend payout ratio		30.61			23.08
Net interest spread		3.27			3.34
Net interest margin		3.85			3.66
Efficiency ratio		56.83			60.00
Net charge-offs to average loans		0.00			0.01

Net Interest Income

For the three months ended March 31, 2019, net interest income, which is the Company’s principal source of operating revenue, increased $3.9 million compared to the three months ended March 31, 2018. Net interest margin is the ratio of taxable-equivalent net interest income to average earning assets for the period. The Company’s net interest margin for the first quarter of 2019 compared to the first quarter of 2018 increased primarily due to the increases in the federal funds rate throughout 2018.

Provision for Loan Losses

The Company’s provision for loan losses for the first quarter of 2019 was $1.7 million compared to $314,000 a year ago. The increase in the provision was primarily due to downgrades of a few commercial loans and loan growth during the quarter. The Company establishes an allowance as an estimate of the probable inherent losses in the loan portfolio at the balance sheet date.  Management believes the allowance for loan losses is appropriate based upon management’s best estimate of probable losses that have been incurred within the existing loan portfolio. Should any of the factors considered by management in evaluating the appropriate level of the allowance for loan losses change, the Company’s estimate of probable loan losses could also change, which could affect the amount of future provisions for loan losses. Net loan charge-offs were $158,000 for the first quarter of 2019, compared to $430,000 for the first quarter of 2018. The rate of net charge-offs to average total loans, as presented in the preceding table, continues to be at a very low level.

Noninterest Income

Noninterest income, as presented in the preceding table, increased slightly by $1.9 million for first quarter of 2019 compared to first quarter of 2018. Noninterest income included increases in debit card usage fees and non-sufficient funds fees. The Company had fees from debit card usage totaling $7.7 million and $6.8 million during the three month periods ended March 31, 2019 and 2018, respectively. This represents 24.2% and 22.7% of the Company’s noninterest income for the three month periods ended March 31,

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2019 and 2018, respectively. In addition, the Company has non-sufficient funds fees totaling $7.6 million and $7.2 million for the three month periods ended March 31, 2019 and 2018, respectively. This represents 23.8% and 24.0% of the Company’s noninterest income for the three month periods ended March 31, 2019 and 2018, respectively.

The Durbin Amendment is a provision in the larger Dodd-Frank Act that gave the Federal Reserve the authority to establish rates on debit card transactions. The Durbin Amendment aims to control debit card interchange fees and restrict anti-competitive practices. The law applies to banks with over $10 billion in assets and limits these banks on what they charge for debit card interchange fees. If the Company grows to exceed $10 billion in assets, the Durbin Amendment will decrease the Company’s income from debit card usage fees by approximately $15 million annually based on current volume.

Noninterest Expense

For the three months ended March 31, 2019, noninterest expense totaled $56.2 million, compared to $55.9 million for the three months ended March 31, 2018. The slight increase in noninterest expense was due to salary increases in 2019 offset by a decrease in other expense due to nonrecurring acquisition related expenses of approximately $2.2 million in 2018.

Income Taxes

The Company’s effective tax rate on income before taxes was 22.4% for the first quarter of 2019, compared to 19.8% for the first quarter of 2018. The lower effective tax rate for the first quarter of 2018 was due to the exercise of stock options.

FINANCIAL POSITION

BANCFIRST CORPORATION

SELECTED CONSOLIDATED FINANCIAL DATA

(Dollars in thousands, except per share data)

	March 31,			December 31,
	2019			2018
	(unaudited)
Balance Sheet Data
Total assets	$	7,709,000		$	7,574,258
Total loans (net of unearned interest)		5,050,221			4,984,150
Allowance for loan losses		52,915			51,389
Debt securities		724,872			772,132
Deposits		6,706,386			6,605,495
Stockholders' equity		927,927			902,789
Book value per share		28.45			27.69
Tangible book value per share (non-GAAP)(1)		25.52			24.74
Average loans to deposits (year-to-date)		75.34	%		74.63	%
Average earning assets to total assets (year-to-date)		92.42			92.90
Average stockholders’ equity to average assets (year-to-date)		12.01			11.37
Asset Quality Ratios
Nonperforming and restructured loans to total loans		0.76	%		0.76	%
Nonperforming and restructured assets to total assets		0.58			0.59
Allowance for loan losses to total loans		1.05			1.03
Allowance for loan losses to nonperforming and restructured loans		138.10			136.29
Reconciliation of Tangible Book Value per Common Share (non-GAAP)(2)
Stockholders' equity	$	927,927		$	902,789
Less goodwill		79,796			79,749
Less intangible assets, net		15,701			16,470
Tangible stockholders' equity (non-GAAP)	$	832,430		$	806,570
Common shares outstanding		32,617,788			32,603,926
Tangible book value per share (non-GAAP)	$	25.52		$	24.74

(1) Refer to the “Reconciliation of Tangible Book Value per Common Share (non-GAAP)” Table

(2) Tangible book value per common share is stockholders’ equity less goodwill and intangible assets, net, divided by common shares outstanding. This amount is a non-GAAP financial measure but has been included as it is considered to be a critical metric with which to analyze and evaluate the financial condition and capital strength of the Company. This measure should not be considered a substitute for operating results determined in accordance with GAAP.

Cash and Interest-Bearing Deposits with Banks

The aggregate of cash and due from banks and interest-bearing deposits with banks increased slightly by $53.2 million or 3.7% to $1.5 billion, from December 31, 2018 to March 31, 2019.

29

Securities

At March 31, 2019, total debt securities decreased $47.3 million, or 6.1% compared to December 31, 2018, due to maturing U.S. treasury securities. The size of the Company’s securities portfolio is determined by the Company’s liquidity and asset/liability management. The net unrealized gain on securities available for sale, before taxes, was $538,000 at March 31, 2019, compared to a net unrealized loss of $2.9 million at December 31, 2018. These unrealized gains and losses are included in the Company’s stockholders’ equity as accumulated other comprehensive income, net of income tax, in the amounts of a gain of $401,000 at March 31, 2019 and a loss of $2.1 million at December 31, 2018.

Loans (Including Acquired Loans)

At March 31, 2019, loans totaled $5.1 billion, an increase of $66.1 million from December 31, 2018. The slight increase in loans was due to internal growth.

Allowance for Loan Losses/Fair Value Adjustments on Acquired Loans

At March 31, 2019, the allowance for loan losses to total loans represented 1.05% of total loans, compared to 1.03% at December 31, 2018.  

The fair value adjustment on acquired loans consists of an interest rate component to adjust the effective rates on the loans to market rates and a credit component to adjust for estimated credit exposures in the acquired loans. The interest rate component was $2.1 million at March 31, 2019 and $2.2 million at December 31, 2018. The credit component of the adjustment was $7.0 million at March 31, 2019 and $7.6 million at December 31, 2018 while the acquired loans outstanding were $242.6 million and $294.6 million, respectively.

Nonperforming and Restructured Assets

Nonperforming and restructured assets totaled $44.7 million at March 31, 2019, compared to $44.6 million at December 31, 2018. The Company’s level of nonperforming and restructured assets has continued to be relatively low.

Nonaccrual loans totaled $21.6 million at March 31, 2019, compared to $22.6 million at the end of 2018. The Company’s nonaccrual loans are primarily commercial and real estate loans. Nonaccrual loans negatively impact the Company’s net interest margin. A loan is placed on nonaccrual status when, in the opinion of management, the future collectability of interest or principal or both is in serious doubt. Interest income is recognized on certain of these loans on a cash basis if the full collection of the remaining principal balance is reasonably expected. Otherwise, interest income is not recognized until the principal balance is fully collected. Had nonaccrual loans performed in accordance with their original contractual terms, the Company would have recognized additional interest income of approximately $544,000 for the first quarter of 2019 and $542,000 for the first quarter of 2018.  Only a small amount of this interest is expected to be ultimately collected.

Restructured loans totaled $14.6 million at March 31, 2019, compared to $13.2 million at the end of 2018. The increase in restructured loans was due primarily to a few commercial loans identified as troubled debt restructurings during the quarter. The Company charges interest on principal balances outstanding during deferral periods. As a result, the current and future financial effects of the recorded balance of loans considered to be troubled debt restructurings whose terms were modified during the period were not considered to be material.

Other real estate owned and repossessed assets totaled $6.4 million at March 31, 2019, compared to $6.9 million at December 31, 2018.

Potential problem loans are performing loans to borrowers with a weakened financial condition, or which are experiencing unfavorable trends in their financial condition, which causes management to have concerns as to the ability of such borrowers to comply with the existing repayment terms. The Company had approximately $16.8 million of these loans at March 31, 2019, compared to $8.0 million at December 31, 2018. Potential problem loans are not included in nonperforming and restructured loans.  In general, these loans are adequately collateralized and have no specific identifiable probable loss. Loans which are considered to have identifiable probable loss potential are placed on nonaccrual status, are allocated a specific allowance for loss or are directly charged-down, and are reported as nonperforming.

Liquidity and Funding

Deposits

At March 31, 2019, deposits totaled $6.7 billion, an increase of $100.9 million or 1.5% from the December 31, 2018 total. The Company’s core deposits provide it with a stable, low-cost funding source. The Company’s core deposits as a percentage of total

30

deposits were 98.1% at both March 31, 2019and December 31, 2018.  Noninterest-bearing deposits to total deposits were 39.7% at March 31, 2019, compared to 39.6% at December 31, 2018.

Short-Term Borrowings

Short-term borrowings, consisting primarily of federal funds purchased and repurchase agreements are another source of funds for the Company. The level of these borrowings is determined by various factors, including customer demand and the Company’s ability to earn a favorable spread on the funds obtained. Short-term borrowings were $5.2 million at March 31, 2019, compared to $1.7 million at December 31, 2018.

Long-Term Borrowings

The Company has a line of credit from the Federal Home Loan Bank (“FHLB”) of Topeka, Kansas to use for liquidity or to match-fund certain long-term fixed-rate loans. The Company’s assets, including residential first mortgages of $785.3 million, are pledged as collateral for the borrowings under the line of credit. As of March 31, 2019 and December 31, 2018, the Company had no advances outstanding under the line of credit from FHLB. In addition, the Company has a revolving line of credit with another financial institution with the ability to draw up to $10.0 million with no advances outstanding. This line of credit has a variable rate based on prime rate minus 25 basis points and matures in 2020.

There have not been any other material changes from the liquidity and funding discussion included in Management’s Discussion and Analysis in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Capital Resources

Stockholders’ equity totaled $927.9 million at March 31, 2019, compared to $902.8 million at December 31, 2018. In addition to net income of $31.8 million, other changes in stockholders’ equity during the three months ended March 31, 2019 included $326,000 related to common stock issuances, $174,000 related to stock-based compensation and a $2.5 million increase in other comprehensive income, that were partially offset by $9.7 million in dividends. The Company’s leverage ratio and total risk-based capital ratios at March 31, 2019, were well in excess of the regulatory requirements.

See Note (8) of the Notes to Consolidated Financial Statements for a discussion of capital ratio requirements.

CONTRACTUAL OBLIGATIONS

There have not been any material changes in the resources required for scheduled repayments of contractual obligations from the table of Contractual Cash Obligations included in Management’s Discussion and Analysis which was included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. 

31

BANCFIRST CORPORATION

CONSOLIDATED AVERAGE BALANCE SHEETS AND INTEREST MARGIN ANALYSIS

(Unaudited)

Taxable Equivalent Basis (Dollars in thousands)

	Three Months Ended March 31,
	2019								2018
				Interest		Average						Interest		Average
	Average			Income/		Yield/			Average			Income/		Yield/
	Balance			Expense		Rate			Balance			Expense		Rate
ASSETS
Earning assets:
Loans (1)	$	5,013,308		$	68,874		5.57	%	$	4,993,902		$	63,055		5.12	%
Securities – taxable		749,521			4,335		2.35			438,848			1,898		1.75
Securities – tax exempt		21,492			159		3.00			29,444			216		2.98
Federal funds sold and interest-bearing deposits with banks		1,273,051			7,750		2.47			1,536,973			5,886		1.55
Total earning assets		7,057,372			81,118		4.66			6,999,167			71,055		4.12
Nonearning assets:
Cash and due from banks		180,142								185,548
Interest receivable and other assets		450,340								382,536
Allowance for loan losses		(51,976	)							(52,479	)
Total nonearning assets		578,506								515,605
Total assets	$	7,635,878							$	7,514,772
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities:
Transaction deposits	$	753,751		$	662		0.36	%	$	809,827		$	394		0.20	%
Savings deposits		2,625,768			10,301		1.59			2,451,433			5,106		0.84
Time deposits		694,663			2,574		1.50			777,811			1,769		0.92
Short-term borrowings		2,038			10		1.96			7,996			35		1.79
Junior subordinated debentures		26,804			491		7.43			31,959			535		6.79
Total interest-bearing liabilities		4,103,024			14,038		1.39			4,079,026			7,839		0.78
Interest-free funds:
Noninterest-bearing deposits		2,580,316								2,582,195
Interest payable and other liabilities		35,544								30,683
Stockholders’ equity		916,994								822,868
Total interest free funds		3,532,854								3,435,746
Total liabilities and stockholders’ equity	$	7,635,878							$	7,514,772
Net interest income				$	67,080							$	63,216
Net interest spread							3.27	%							3.34	%
Effect of interest free funds							0.58	%							0.32	%
Net interest margin							3.85	%							3.66	%

(1) Nonaccrual loans are included in the average loan balances and any interest on such nonaccrual loans is recognized on a cash basis.

32

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

There have been no significant changes in the Registrant’s disclosures regarding market risk since December 31, 2018, the date of its most recent annual report to stockholders.

Item 4. Controls and Procedures.

The Company’s Chief Executive Officer, Chief Financial Officer and its Disclosure Committee, which includes the Company’s Executive Chairman, Chief Risk Officer, Chief Internal Auditor, Chief Asset Quality Officer, Controller, General Counsel and Vice President of Corporate Finance, have evaluated, as of the last day of the period covered by this report, the Company’s disclosure controls and procedures.  Based on their evaluation they concluded that the disclosure controls and procedures of the Company are effective to ensure that information required to be disclosed by the Company in the reports filed or submitted by it under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported, within the time periods specified in the applicable rules and forms.

No changes were made to the Company’s internal control over financial reporting during the period covered by this report that materially affected, or are likely to materially affect, the Company’s internal control over financial reporting.

33

PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

The Company has been named as a defendant in various legal actions arising from the conduct of its normal business activities. Although the amount of any liability that could arise with respect to these actions cannot be accurately predicted, in the opinion of the Company, any such liability will not have a material adverse effect on the consolidated financial statements of the Company.

Item 1A. Risk Factors.

Except as set forth below, as of March 31, 2019, there have been no material changes from the risk factors previously disclosed in Part I, Item 1A, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2018:

The Company’s noninterest income may be reduced

The Durbin Amendment is a provision in the larger Dodd-Frank Act that gave the Federal Reserve the authority to establish rates on debit card transactions. The Durbin Amendment aims to control debit card interchange fees and restrict anti-competitive practices. The law applies to banks with over $10 billion in assets and limits these banks on what they charge for debit card interchange fees. If the Company grows to exceed $10 billion in assets, the Durbin Amendment will decrease the Company’s income from debit card usage fees by approximately $15 million annually based on current volume.

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

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

None.

Item 5. Other Information.

None.

34

Item 6. Exhibits.

Exhibit Number	Exhibit
2.1	Share Exchange Agreement by and between BancFirst Corporation and Pegasus Bank dated April 23, 2019 (filed as Exhibit 2.1 to the Company’s Current Report on Form 8-K/A dated April 25, 2019 and incorporated herein by reference).
3.1	Amended and Restated By-Laws of BancFirst Corporation (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K dated March 30, 2015 and incorporated herein by reference).
3.2	Certificate of Amendment of the Third Amended and Restated Certificate of Incorporation of BancFirst Corporation dated May 31, 2017 (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K dated May 31, 2017 and incorporated herein by reference).
4.1	Instruments defining the rights of securities holders (see Exhibits 3.1 and 3.2 above).
4.2	Form of Amended and Restated Trust Agreement relating to the 7.20% Cumulative Trust Preferred Securities of BFC Capital Trust II (filed as Exhibit 4.5 to the Company’s registration statement on Form S-3/A, File No. 333-112488 dated February 23, 2004, and incorporated herein by reference).
4.3	Form of 7.20% Cumulative Trust Preferred Security Certificate for BFC Capital Trust II (filed as Exhibit D to Exhibit 4.5 to the Company’s registration statement on Form S-3/A, File No. 333-112488 dated February 23, 2004, and incorporated herein by reference).
4.4	Form of Indenture relating to the 7.20% Junior Subordinated Deferrable Interest Debentures of BancFirst Corporation issued to BFC Capital Trust II (filed as Exhibit 4.1 to the Company’s registration statement on Form S-3, File No. 333-112488 dated February 4, 2004, and incorporated herein by reference).
4.5	Form of Certificate of 7.20% Junior Subordinated Deferrable Interest Debenture of BancFirst Corporation (filed as Exhibit 4.2 to the Company’s registration statement on Form S-3, File No. 333-112488 dated February 4, 2004, and incorporated herein by reference).
4.6	Form of Guarantee of BancFirst Corporation relating to the 7.20% Cumulative Trust Preferred Securities of BFC Capital Trust II (filed as Exhibit 4.7 to the Company’s registration statement on Form S-3/A, File No. 333-112488 dated February 23, 2004, and incorporated herein by reference).
4.7	Form of Guarantee Agreement by and between CSB Bancshares, Inc. and Wilmington Trust Company (filed as Exhibit 4.7 to the Company’s Quarterly Report on Form 10-Q for the Quarter ended September 30, 2015 and incorporated herein by reference).
4.8	Form of Indenture relating to the Floating Rate Junior Subordinated Deferrable Interest Debentures of CSB Bancshares, Inc., issued to Wilmington Trust Company (filed as Exhibit 4.8 to the Company’s Quarterly Report on Form 10-Q for the Quarter ended September 30, 2015 and incorporated herein by reference).
4.9	Form of First Supplemental Indenture relating to the Floating Rate Junior Subordinated Deferrable Interest Debentures by and between Wilmington Trust Company and BancFirst Corporation (filed as Exhibit 4.9 to the Company’s Quarterly Report on Form 10-Q for the Quarter ended September 30, 2015 and incorporated herein by reference).
10.1	BancFirst Corporation Employee Stock Ownership and Trust Agreement adopted effective January 1, 2015 (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended March 31, 2015 and incorporated herein by reference).
10.2	Amendment Number One to the BancFirst Corporation Employee Stock Ownership Plan (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K dated February 26, 2018 and incorporated herein by reference).
10.3	Fifth Amended and Restated BancFirst Corporation Directors’ Stock Option Plan (filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2016 and incorporated herein by reference).
10.4	Fifth Amended and Restated BancFirst Corporation Directors’ Deferred Stock Compensation Plan (filed as Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2016 and incorporated herein by reference).

35

Exhibit Number	Exhibit
10.5	Fourteenth Amended and Restated BancFirst Corporation Stock Option Plan (filed as Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2016 and incorporated herein by reference).
10.6	Adoption Agreement for the BancFirst Corporation Thrift Plan adopted April 21, 2016 effective January 1, 2016. (filed as Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended March 31, 2016 and incorporated herein by reference).
10.7	Amendment Number One to the BancFirst Corporation Thrift Plan. (filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K dated February 26, 2018 and incorporated herein by reference).
10.8	Purchase and Sale Agreement and Escrow Instructions by and between Cotter Tower – Oklahoma L.P. and BancFirst Corporation. (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K dated September 5, 2018 and incorporated herein by reference).
10.9	First Amendment to Purchase and Sale Agreement and Escrow Instructions by and between Cotter Tower – Oklahoma L.P. and BancFirst Corporation. (filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K dated September 5, 2018 and incorporated herein by reference).
31.1*	Chief Executive Officer’s Certification pursuant to Rule 13a-14(a) or Rule 15d-14(a).
31.2*	Chief Financial Officer’s Certification pursuant to Rule 13a-14(a) or Rule 15d-14(a).
32*	CEO’s & CFO’s Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase

* Filed herewith.

36

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.

	BANCFIRST CORPORATION
	(Registrant)
Date:  May 3, 2019	/s/ David Harlow
	David Harlow
	President
	Chief Executive Officer
	(Principal Executive Officer)
Date:  May 3, 2019	/s/ Kevin Lawrence
	Kevin Lawrence
	Executive Vice President
	Chief Financial Officer
	(Principal Financial Officer)

37

EX-31.1

Exhibit 31.1

CEO’S CERTIFICATION PURSUANT TO RULE 13a-14(a) OR RULE 15d-14(a)

I, David Harlow, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BancFirst Corporation;

2. Based on my knowledge, this quarterly 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 quarterly report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly 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 quarterly 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 quarterly 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 quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and

d) Disclosed in this quarterly report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter 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:

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 controls over financial reporting.

Date:  May 3, 2019	/s/ David Harlow
	David Harlow
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CFO’S CERTIFICATION PURSUANT TO RULE 13a-14(a) OR RULE 15d-14(a)

I, Kevin Lawrence, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BancFirst Corporation;

2. Based on my knowledge, this quarterly 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 quarterly report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly 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 quarterly 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 quarterly 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 quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and

d) Disclosed in this quarterly report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter 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:

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 controls over financial reporting.

Date:  May 3, 2019	/s/ Kevin Lawrence
	Kevin Lawrence
	Executive Vice President
	Chief Financial Officer
	(Principal Financial Officer)

EX-32

Exhibit 32

Certification of periodic report

pursuant to section 906 of the sarbanes-oxley act of 2002

I, David Harlow, Chief Executive Officer and Kevin Lawrence, Chief Financial Officer of BancFirst Corporation (the “Company”), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

(1) The Quarterly Report on Form 10-Q of the Company for the period ended March 31, 2019 (the “Form 10-Q”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m); and

(2) The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 3, 2019

/s/ David Harlow

David Harlow

President and Chief Executive Officer

(Principal Executive Officer)

/s/ Kevin Lawrence

Kevin Lawrence

Executive Vice President

and Chief Financial Officer

(Principal Financial Officer)

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	BANF
Entity Registrant Name	BANCFIRST CORP /OK/
Entity Central Index Key	0000760498
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		32,626,588

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 185,958	$ 228,431
Interest-bearing deposits with banks	1,291,447	1,195,824
Securities held for investment (fair value: $1,223 and $1,433, respectively)	1,217	1,428
Securities available for sale at fair value	723,655	770,704
Loans held for sale	7,719	8,174
Loans (net of unearned interest)	5,042,502	4,975,976
Allowance for loan losses	(52,915)	(51,389)
Loans, net of allowance for loan losses	4,989,587	4,924,587
Premises and equipment, net	177,950	174,362
Other real estate owned	6,172	6,690
Intangible assets, net	15,701	16,470
Goodwill	79,749	79,749
Accrued interest receivable and other assets	229,845	167,839
Total assets	7,709,000	7,574,258
Deposits:
Noninterest-bearing	2,659,584	2,613,876
Interest-bearing	4,046,802	3,991,619
Total deposits	6,706,386	6,605,495
Short-term borrowings	5,200	1,675
Accrued interest payable and other liabilities	42,683	37,495
Junior subordinated debentures	26,804	26,804
Total liabilities	6,781,073	6,671,469
Stockholders' equity:
Common stock, $1.00 par, 40,000,000 shares authorized; shares issued and outstanding: 32,617,788 and 32,603,926, respectively	32,618	32,604
Capital surplus	150,195	149,709
Retained earnings	744,713	722,615
Accumulated other comprehensive loss, net of income tax of $137 and $(731), respectively	401	(2,139)
Total stockholders' equity	927,927	902,789
Total liabilities and stockholders' equity	7,709,000	7,574,258
Senior Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value
Cumulative Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Securities, fair value	$ 1,223	$ 1,433
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	32,617,788	32,603,926
Common stock, shares outstanding	32,617,788	32,603,926
Accumulated other comprehensive loss, tax expense (benefit)	$ 137	$ (731)
Senior Preferred Stock [Member]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Cumulative Preferred Stock [Member]
Preferred stock, par value	$ 5.00	$ 5.00
Preferred stock, shares authorized	900,000	900,000
Preferred stock, shares issued	0	0

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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
INTEREST INCOME
Loans, including fees	$ 68,730	$ 62,919
Securities:
Taxable	4,335	1,898
Tax-exempt	126	171
Federal funds sold	2	104
Interest-bearing deposits with banks	7,748	5,782
Total interest income	80,941	70,874
INTEREST EXPENSE
Deposits	13,537	7,269
Short-term borrowings	10	35
Junior subordinated debentures	491	535
Total interest expense	14,038	7,839
Net interest income	66,903	63,035
Provision for loan losses	1,684	314
Net interest income after provision for loan losses	65,219	62,721
NONINTEREST INCOME
Securities transactions (includes no accumulated other comprehensive income reclassifications)		(14)
Income from sales of loans	698	651
Insurance commissions	5,265	5,199
Cash management	3,776	3,021
(Loss)/gain on sale of other assets	(4)	26
Other	1,426	1,445
Total noninterest income	32,001	30,110
NONINTEREST EXPENSE
Salaries and employee benefits	36,171	34,190
Occupancy, net	2,627	3,402
Depreciation	2,985	2,410
Amortization of intangible assets	759	733
Data processing services	1,480	1,203
Net (income)/expense from other real estate owned	(484)	26
Marketing and business promotion	2,261	2,352
Deposit insurance	533	619
Other	9,874	10,955
Total noninterest expense	56,206	55,890
Income before taxes	41,014	36,941
Income tax expense	9,177	7,321
Net income	$ 31,837	$ 29,620
NET INCOME PER COMMON SHARE
Basic	$ 0.98	$ 0.91
Diluted	$ 0.96	$ 0.89
OTHER COMPREHENSIVE GAIN/(LOSS)
Unrealized gains/(losses) on securities, net of tax of $(868) and $474, respectively	$ 2,540	$ (1,388)
Other comprehensive gains/(losses), net of tax of $(868) and $474, respectively	2,540	(1,388)
Comprehensive income	34,377	28,232
Trust Revenue [Member]
NONINTEREST INCOME
Revenue	3,177	3,129
Service Charges on Deposits [Member]
NONINTEREST INCOME
Revenue	$ 17,663	$ 16,653

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Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Securities transactions accumulated other comprehensive income reclassifications	$ 0	$ 0
Unrealized gains (losses) on securities, tax	(868,000)	474,000
Other comprehensive gains (losses), tax	$ (868,000)	$ 474,000

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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	COMMON STOCK [Member]	CAPITAL SURPLUS [Member]	RETAINED EARNINGS [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]
Balance at beginning of period at Dec. 31, 2017		$ 31,895	$ 107,481	$ 638,580	$ (2,327)
Shares issued for stock options		80	1,210
Shares issued for acquisitions		733	38,765
Stock-based compensation arrangements			306
Net income	$ 29,620			29,620
Dividends on common stock				(6,859)
Net change	(1,388)				(1,388)
Balance at end of period at Mar. 31, 2018	838,096	32,708	147,762	661,341	(3,715)
Balance at beginning of period at Dec. 31, 2018	902,789	32,604	149,709	722,615	(2,139)
Shares issued for stock options		14	312
Stock-based compensation arrangements			174
Net income	31,837			31,837
Dividends on common stock				(9,739)
Net change	2,540				2,540
Balance at end of period at Mar. 31, 2019	$ 927,927	$ 32,618	$ 150,195	$ 744,713	$ 401

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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
RETAINED EARNINGS [Member]
Dividend on common stock	$ 0.30	$ 0.21

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Consolidated Statements of Cash Flow (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 31,837	$ 29,620
Adjustments to reconcile to net cash provided by operating activities:
Provision for loan losses	1,684	314
Depreciation and amortization	3,744	3,143
Net amortization of securities premiums and discounts	(1,948)	(49)
Realized securities losses		14
Gain on sales of loans	(698)	(651)
Cash receipts from the sale of loans originated for sale	43,229	44,558
Cash disbursements for loans originated for sale	(42,094)	(43,949)
Deferred income tax benefit	(459)	(117)
Gain on other assets	(499)	(21)
Increase in interest receivable	(1,500)	(1,111)
Increase in interest payable	382	353
Amortization of stock-based compensation arrangements	174	306
Excess tax benefit from stock-based compensation arrangements	(102)	(647)
Other, net	2,910	(5,408)
Net cash provided by operating activities	36,660	26,355
INVESTING ACTIVITIES
Net cash received from acquisitions, net of cash paid		6,248
Net decrease in federal funds sold		2,451
Purchases of available for sale securities		(30,861)
Proceeds from maturities, calls and paydowns of held for investment securities	210	213
Proceeds from maturities, calls and paydowns of available for sale securities	2,406	5,729
Proceeds from sales of available for sale securities		1,460
Purchase of equity securities	(1,828)
Proceeds from paydowns and sales of equity securities	110
Net change in loans	(67,249)	48,819
Purchases of premises, equipment and computer software	(6,792)	(7,168)
Other, net	(5,019)	(857)
Net cash (used in) provided by investing activities	(78,162)	26,034
FINANCING ACTIVITIES
Net change in deposits	100,582	(31,953)
Net increase/(decrease) in short-term borrowings	3,525	(800)
Issuance of common stock in connection with stock options, net	326	1,290
Cash dividends paid	(9,781)	(6,698)
Net cash provided by (used in) financing activities	94,652	(38,161)
Net increase in cash, due from banks and interest-bearing deposits	53,150	14,228
Cash, due from banks and interest-bearing deposits at the beginning of the period	1,424,255	1,757,875
Cash, due from banks and interest-bearing deposits at the end of the period	1,477,405	1,772,103
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	13,655	7,486
Cash paid during the period for income taxes		1,250
Noncash investing and financing activities:
Stock issued in acquisitions		39,498
Cash consideration for acquisitions		24,722
Fair value of assets acquired in acquisitions		377,320
Liabilities assumed in acquisitions		338,860
Unpaid common stock dividends declared	$ 9,784	$ 6,854

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Description of Business and Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Description of Business and Summary of Significant Accounting Policies

(1) DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The accounting and reporting policies of BancFirst Corporation and its subsidiaries (the “Company”) conform to accounting principles generally accepted in the United States of America (U.S. GAAP) and general practice within the banking industry. A summary of significant accounting policies can be found in Note (1) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Basis of Presentation

The accompanying unaudited interim consolidated financial statements include the accounts of BancFirst Corporation, Council Oak Partners, LLC, BancFirst Insurance Services, Inc., BancFirst Risk & Insurance Company and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BFTower, LLC and BancFirst Agency, Inc. All significant intercompany accounts and transactions have been eliminated. Assets held in a fiduciary or agency capacity are not assets of the Company and, accordingly, are not included in the unaudited interim consolidated financial statements.

The accompanying unaudited interim consolidated financial statements and notes are presented in accordance with the instructions for Form 10-Q. The information contained in the financial statements and footnotes included in BancFirst Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, should be referred to in connection with these unaudited interim consolidated financial statements. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

The unaudited interim consolidated financial statements contained herein reflect all adjustments which are, in the opinion of management, necessary to provide a fair statement of the financial position and results of operations of the Company for the interim periods presented. All such adjustments are of a normal and recurring nature. There have been no significant changes in the accounting policies of the Company since December 31, 2018, the date of the most recent annual report.

Reclassifications

Certain items in prior financial statements have been reclassified to conform to the current presentation. Such reclassifications had no effect on previously reported cash flows, stockholders’ equity or comprehensive income.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States inherently involves the use of estimates and assumptions that affect the amounts reported in the financial statements and the related disclosures. These estimates relate principally to the determination of the allowance for loan losses, income taxes, the fair value of financial instruments and the valuation of intangibles. Such estimates and assumptions may change over time and actual amounts realized may differ from those reported.

Recent Accounting Pronouncements

Standards Adopted During Current Period:

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “Leases - (Topic 842)”, amended by ASU 2018-11, “Leases – (Topic 842)”: Targeted Improvements. This new guidance requires a lessee to recognize on the balance sheet the assets and liabilities for the rights and obligations created by leases with lease terms of more than twelve months and provide additional disclosures. The amendments were effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2018. The Company adopted this new standard on January 1, 2019, using a modified retrospective transition approach and recognized right-of-use lease assets and related lease liabilities totaling $4.3 million. The Company elected to apply certain practical adoption expedients provided under the updates whereby it did not reassess initial direct costs for any existing leases.No cumulative-effect adjustment was recognized as the amount was not material, and the impact on our results of operations and cash flows was also not material. No prior periods were adjusted. See Note 6 for the financial position impact and additional disclosures.

Standards Not Yet Adopted:

In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820).” ASU 2018-13 removes, modifies and adds disclosure requirements on fair value measurements. ASU 2018-13 will be effective for the Company on January 1, 2020. Early adoption is permitted. In addition, early adoption of any removed or modified disclosures and delayed adoption of the additional disclosures until the effective date is also permitted. The Company expects to adopt the standard in the first quarter of 2020.

In June 2016, the FASB issued ASU No.  2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires a financial asset measured at amortized cost basis to be presented at the net amount expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 requires enhanced disclosures related to the significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for the Company on January 1, 2020. The Company is currently evaluating the potential impact of ASU 2016-13 on its financial statements. In that regard, the Company has formed a task force under the direction of its Chief Financial Officer. In preparation, the Company has developed new credit estimation models, processes and controls. Internal validation of the model is underway and expected to be completed early in 2019. The Company has performed test runs of the new processes and controls and expects to begin full parallel runs by mid-2019. The impact of the standard will depend on the composition of the Company’s portfolio as well as economic conditions and forecasts at the time of adoption. The adoption of ASU 2016-13 could result in an increase in the allowance for loan losses as a result of changing from an “incurred loss” model, which encompasses allowances for current known and inherent losses within the portfolio, to an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate that we establish an allowance for expected credit losses for certain debt securities and other financial assets. While we are currently unable to reasonably estimate the impact of adopting ASU 2016-13, we expect that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. The Company expects to adopt the standard in the first quarter of 2020.

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Recent Developments, Including Mergers and Acquisitions

3 Months Ended

Mar. 31, 2019

Recent Developments Including Mergers And Acquisitions [Abstract]

Recent Developments, Including Mergers and Acquisitions

(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

On April, 23, 2019, the Company entered into an agreement to acquire Pegasus Bank.  See Note (12) for additional information on this subsequent event.

On August 31, 2018 BFTower, LLC, a wholly-owned subsidiary of BancFirstpurchased Cotter Ranch Tower in Oklahoma City for the Company’s corporate headquarters for $21.0 million. Cotter Ranch Tower was subsequently renamed BancFirst Tower. BancFirst Tower consists of an aggregate of 507,000 square feet, has 36 floors and is the second tallest building in Oklahoma City. The BancFirst Tower will remain an income producing property as approximately 55% is currently leased to outside tenants. BancFirst Tower will allow the Company to consolidate operations from three locations to one and will improve operational efficiencies. Upon consolidation, the Company expects to occupy approximately 35% of BancFirst Tower, resulting in approximately 90% total occupancy.  Renovations on BancFirst Tower will be substantially completed by the end of 2020 and are expected to cost approximately $70 million. The renovation costs include substantial deferred maintenance including HVAC, plumbing, electrical, elevators, building skin and roof while also including much needed improvements to both the interior and exterior common areas including the lobby, underground and outdoor plaza. The Company could start depreciating certain components of the renovation as they are put into service as early as September 2019. The total purchase price and renovation costs were determined to be favorable to other alternatives, such as constructing new corporate headquarters. On December 14, 2018, BFTower LLC, purchased a 42.6% ownership interest in SFPG, LLC, which is the owner of a 1,568 space parking garage adjacent to BancFirst Tower, for $9.8 million.

On January 11, 2018, the Company acquired First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company, with locations in Carney, Grove, Ketchum, Luther, Tulsa and Wagoner. First Bank & Trust Company had approximately $290 million in total assets, $247 million in loans and $251 million in deposits. First Bank & Trust Company operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on February 16, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $6.3 million and goodwill of approximately $19.1 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company complements the Company’s community banking strategy by adding an additional five communities to its banking network in Oklahoma.

On January 11, 2018, the Company acquired First Chandler Corp. and its subsidiary bank, First Bank of Chandler, with two locations in Chandler. First Bank of Chandler had approximately $88 million in total assets, $66 million in loans and $79 million in deposits. First Bank of Chandler operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on September 7, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $2.2 million and goodwill of approximately $6.6 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Chandler Corp. and its subsidiary bank, First Bank of Chandler complements the Company’s community banking strategy by increasing its banking network in Oklahoma.

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Securities

3 Months Ended

Mar. 31, 2019

Investments Debt And Equity Securities [Abstract]

Securities

(3) SECURITIES

The following table summarizes the amortized cost and estimated fair values of debt securities held for investment:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
March 31, 2019	(Dollars in thousands)
Mortgage backed securities (1)	$	122	$	6	$	—	$	128
States and political subdivisions		595		—		—		595
Other securities		500		—		—		500
Total	$	1,217	$	6	$	—	$	1,223
December 31, 2018
Mortgage backed securities (1)	$	133	$	5	$	—	$	138
States and political subdivisions		795		—		—		795
Other securities		500		—		—		500
Total	$	1,428	$	5	$	—	$	1,433

The following table summarizes the amortized cost and estimated fair values of debt securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2019	(Dollars in thousands)
U.S. treasuries	$	651,860	$	2,847	$	(1,957	)	$	652,750
U.S. federal agencies		28,106		—		(152	)		27,954
Mortgage backed securities (1)		16,162		126		(576	)		15,712
States and political subdivisions		26,989		317		(67	)		27,239
Total	$	723,117	$	3,290	$	(2,752	)	$	723,655
December 31, 2018
U.S. treasuries	$	699,882	$	1,108	$	(3,524	)	$	697,466
U.S. federal agencies		30,079		—		(160	)		29,919
Mortgage backed securities (1)		16,367		114		(573	)		15,908
States and political subdivisions		27,246		277		(112	)		27,411
Total	$	773,574	$	1,499	$	(4,369	)	$	770,704

(1) Primarily consists of FHLMC, FNMA, GNMA and mortgage backed securities through U.S. agencies.

The maturities of debt securities held for investment and available for sale are summarized in the following table using contractual maturities. Actual maturities may differ from contractual maturities due to obligations that are called or prepaid. For purposes of the maturity table, mortgage-backed securities, which are not due at a single maturity date, have been presented at their contractual maturity.

	March 31, 2019				December 31, 2018
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	295	$	295	$	495	$	495
After one year but within five years		368		370		369		370
After five years but within ten years		552		556		562		565
After ten years		2		2		2		3
Total	$	1,217	$	1,223	$	1,428	$	1,433
Available for Sale
Contractual maturity of debt securities:
Within one year	$	403,084	$	402,210	$	411,256	$	410,327
After one year but within five years		273,033		274,838		313,416		311,924
After five years but within ten years		7,265		7,487		7,524		7,685
After ten years		39,735		39,120		41,378		40,768
Total debt securities	$	723,117	$	723,655	$	773,574	$	770,704

The following table is a summary of the Company’s book value of securities that were pledged as collateral for public funds on deposit, repurchase agreements and for other purposes as required or permitted by law:

	March 31, 2019		December 31, 2018
	(Dollarsin thousands)
Book value of pledged securities	$	418,807	$	472,053

Non-Cash investing activities

On March 31, 2019, the Company had a $50.0 million security that matured, was removed from the securities portfolio and moved into accrued interest receivable and other assets on the balance sheet. The cash for this matured security was received the following day on April 1, 2019.

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Loans and Allowance for Loan Losses

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Loans and Allowance for Loan Losses

(4) LOANS AND ALLOWANCE FOR LOAN LOSSES

The following is a schedule of loans outstanding by category:

	March 31, 2019					December 31, 2018
	Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and financial:
Commercial and industrial	$	1,043,848		20.70	%	$	1,032,787		20.76	%
Oil & gas production and equipment		106,991		2.12			94,729		1.90
Agriculture		130,717		2.59			136,313		2.74
State and political subdivisions:
Taxable		73,051		1.45			76,211		1.53
Tax-exempt		49,833		0.99			48,415		0.97
Real estate:
Construction		469,826		9.32			451,224		9.07
Farmland		227,526		4.51			219,241		4.41
One to four family residences		982,605		19.49			979,170		19.68
Multifamily residential properties		68,412		1.36			65,949		1.33
Commercial		1,514,266		30.03			1,506,937		30.28
Consumer		326,002		6.46			328,069		6.59
Other (not classified above)		49,425		0.98			36,931		0.74
Total loans	$	5,042,502		100.00	%	$	4,975,976		100.00	%

The Company’s loans are mostly to customers within Oklahoma and approximately 65% of the loans are secured by real estate.  Credit risk on loans is managed through limits on amounts loaned to individual and related borrowers, underwriting standards and loan monitoring procedures. The amounts and types of collateral obtained, if any, to secure loans are based upon the Company’s underwriting standards and management’s credit evaluation. Collateral varies, but may include real estate, equipment, accounts receivable, inventory, livestock and securities. The Company’s interest in collateral is secured through filing mortgages and liens, and in some cases, by possession of the collateral.

The Company’s commercial and industrial loan category includes a small percentage of loans to companies that provide ancillary services to the oil and gas industry, such as transportation, preparation contractors and equipment manufacturers. The balance of these loans was approximately $61 million at March 31, 2019 and approximately $60 million at December 31, 2018.

Accounting policies related to appraisals, nonaccruals and charge-offs are disclosed in Note (1) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Nonperforming and Restructured Assets

The following is a summary of nonperforming and restructured assets:

	March 31,		December 31,
	2019		2018
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	2,170	$	1,916
Nonaccrual		21,594		22,603
Restructured		14,552		13,188
Total nonperforming and restructured loans		38,316		37,707
Other real estate owned and repossessed assets		6,433		6,873
Total nonperforming and restructured assets	$	44,749	$	44,580

Had nonaccrual loans performed in accordance with their original contractual terms, the Company would have recognized additional interest income of approximately $544,000 for the three months ended March 31, 2019 and approximately $542,000 for the three months ended March 31, 2018.

The Company charges interest on principal balances outstanding on restructured loans during deferral periods. The current and future financial effects of the recorded balance of loans considered to be restructured were not considered to be material.

Loans are segregated into classes based upon the nature of the collateral and the borrower. These classes are used to estimate the allowance for loan losses. The following table is a summary of amounts included in nonaccrual loans, segregated by class of loans. Residential real estate refers to one-to-four family real estate.

	March 31, 2019		December 31, 2018
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	769	$	838
Non-residential real estate other		1,030		187
Residential real estate permanent mortgage		1,208		954
Residential real estate all other		5,729		5,488
Commercial and financial:
Non-consumer non-real estate		5,132		5,682
Consumer non-real estate		422		437
Other loans		393		490
Acquired loans		6,911		8,527
Total	$	21,594	$	22,603

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days and Greater		Total Past Due Loans		Current Loans		Total Loans		Accruing Loans 90 Days or More Past Due
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	8,948	$	30	$	123	$	9,101	$	629,918	$	639,019	$	117
Non-residential real estate other		2,089		152		593		2,834		1,186,935		1,189,769		121
Residential real estate permanent mortgage		3,374		634		801		4,809		328,857		333,666		401
Residential real estate all other		2,239		4,002		2,327		8,568		832,865		841,433		247
Commercial and financial:
Non-consumer non-real estate		3,226		999		2,164		6,389		1,320,215		1,326,604		453
Consumer non-real estate		1,498		548		311		2,357		324,649		327,006		173
Other loans		1,485		156		92		1,733		140,687		142,420		—
Acquired loans		1,528		1,689		4,290		7,507		235,078		242,585		658
Total	$	24,387	$	8,210	$	10,701	$	43,298	$	4,999,204	$	5,042,502	$	2,170
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	5,114	$	810	$	43	$	5,967	$	620,654	$	626,621	$	—
Non-residential real estate other		2,772		32		114		2,918		1,143,210		1,146,128		—
Residential real estate permanent mortgage		2,448		653		693		3,794		324,908		328,702		430
Residential real estate all other		1,728		292		2,799		4,819		822,685		827,504		612
Commercial and financial:
Non-consumer non-real estate		3,620		702		833		5,155		1,278,499		1,283,654		282
Consumer non-real estate		1,991		565		559		3,115		323,747		326,862		325
Other loans		322		158		178		658		141,251		141,909		—
Acquired loans		5,240		1,669		4,936		11,845		282,751		294,596		267
Total	$	23,235	$	4,881	$	10,155	$	38,271	$	4,937,705	$	4,975,976	$	1,916

Impaired Loans

Loans are considered impaired when, based on current information and events, it is probable the Company will be unable to collect the full amount of scheduled principal and interest payments in accordance with the original contractual terms of the loan agreement. If a loan is impaired, a specific valuation allowance may be allocated, if necessary, so that the loan is reported, net of allowance for loss, at the present value of future cash flows using the loan’s existing rate, or the fair value of collateral if repayment is expected solely from the collateral.

The following table presents impaired loans, segregated by class of loans. During the period ended March 31, 2019 and March 31, 2018, no material amount of interest income was recognized on impaired loans subsequent to their classification as impaired.

	Impaired Loans
	Unpaid Principal Balance		Recorded Investment with Allowance		Related Allowance		Average Recorded Investment
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	7,730	$	7,619	$	228	$	7,362
Non-residential real estate other		1,976		1,722		212		1,247
Residential real estate permanent mortgage		1,871		1,619		143		1,618
Residential real estate all other		7,153		6,854		2,478		7,024
Commercial and financial:
Non-consumer non-real estate		18,769		11,120		857		10,976
Consumer non-real estate		767		660		133		724
Other loans		694		422		31		369
Acquired loans		12,764		10,228		2		11,078
Total	$	51,724	$	40,244	$	4,084	$	40,398
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	7,126	$	6,933	$	202	$	7,739
Non-residential real estate other		949		757		50		6,057
Residential real estate permanent mortgage		1,789		1,545		127		1,650
Residential real estate all other		7,177		6,862		2,433		7,154
Commercial and financial:
Non-consumer non-real estate		18,507		10,977		881		12,140
Consumer non-real estate		928		829		131		846
Other loans		710		490		35		481
Acquired loans		12,846		9,864		2		11,050
Total	$	50,032	$	38,257	$	3,861	$	47,117

Credit Risk Monitoring and Loan Grading

The Company considers various factors to monitor the credit risk in the loan portfolio including volume and severity of loan delinquencies, nonaccrual loans, internal grading of loans, historical loan loss experience and economic conditions.

An internal risk grading system is used to indicate the credit risk of loans. The loan grades used by the Company are for internal risk identification purposes and do not directly correlate to regulatory classification categories or any financial reporting definitions.

The general characteristics of the risk grades are disclosed in Note (5) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

The following table presents internal loan grading by class of loans:

	Internal Loan Grading
	Grade
		1		2		3		4		5	Total
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	459,381	$	153,357	$	25,456	$	825	$	—	$	639,019
Non-residential real estate other		956,483		206,591		25,665		1,030		—		1,189,769
Residential real estate permanent mortgage		283,951		41,010		7,080		1,625		—		333,666
Residential real estate all other		659,846		159,703		15,943		5,941		—		841,433
Commercial and financial:
Non-consumer non-real estate		1,033,690		264,192		24,726		3,996		—		1,326,604
Consumer non-real estate		302,263		21,860		2,246		637		—		327,006
Other loans		136,737		4,317		1,348		18		—		142,420
Acquired loans		127,474		94,135		13,455		7,206		315		242,585
Total	$	3,959,825	$	945,165	$	115,919	$	21,278	$	315	$	5,042,502
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	451,059	$	157,715	$	16,949	$	898	$	—	$	626,621
Non-residential real estate other		932,454		188,341		25,146		187		—		1,146,128
Residential real estate permanent mortgage		279,870		39,806		7,401		1,625		—		328,702
Residential real estate all other		644,217		162,003		15,232		6,052		—		827,504
Commercial and financial:
Non-consumer non-real estate		1,000,089		264,134		15,128		4,303		—		1,283,654
Consumer non-real estate		302,217		21,600		2,255		790		—		326,862
Other loans		136,132		5,542		116		119		—		141,909
Acquired loans		156,008		109,075		20,884		8,284		345		294,596
Total	$	3,902,046	$	948,216	$	103,111	$	22,258	$	345	$	4,975,976

Allowance for Loan Losses Methodology

The allowance for loan losses (“ALL”) methodology is disclosed in Note (5) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

The following table details activity in the ALL by class of loans for the period presented. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	6,328	$	(6	)	$	1	$	(5	)	$	332		$	6,655
Non-residential real estate other		11,027		(6	)		—		(6	)		341			11,362
Residential real estate permanent mortgage		3,261		(63	)		5		(58	)		58			3,261
Residential real estate all other		10,673		(52	)		2		(50	)		423			11,046
Commercial and financial:
Non-consumer non-real estate		13,151		(70	)		67		(3	)		1,261			14,409
Consumer non-real estate		3,065		(120	)		71		(49	)		56			3,072
Other loans		2,423		—			35		35			(50	)		2,408
Acquired loans		1,461		(26	)		4		(22	)		(737	)		702
Total	$	51,389	$	(343	)	$	185	$	(158	)	$	1,684		$	52,915

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2018
Real estate:
Non-residential real estate owner occupied	$	6,195	$	(19	)	$	1	$	(18	)	$	473		$	6,650
Non-residential real estate other		10,519		(1	)		39		38			(9	)		10,548
Residential real estate permanent mortgage		3,226		(56	)		3		(53	)		108			3,281
Residential real estate all other		9,672		(90	)		3		(87	)		246			9,831
Commercial and financial:
Non-consumer non-real estate		15,334		(156	)		13		(143	)		(406	)		14,785
Consumer non-real estate		2,793		(250	)		80		(170	)		76			2,699
Other loans		2,481		—			12		12			(157	)		2,336
Acquired loans		1,446		(27	)		18		(9	)		(17	)		1,420
Total	$	51,666	$	(599	)	$	169	$	(430	)	$	314		$	51,550

The following table details the amount of ALL by class of loans for the period presented, detailed on the basis of the impairment methodology used by the Company.

	ALL
	March 31, 2019				December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied.	$	986	$	5,669	$	669	$	5,659
Non-residential real estate other		1,024		10,338		1,119		9,908
Residential real estate permanent mortgage		457		2,804		505		2,756
Residential real estate all other		3,691		7,355		3,413		7,260
Commercial and financial:
Non-consumer non-real estate		3,069		11,340		2,114		11,037
Consumer non-real estate		375		2,697		374		2,691
Other loans		26		2,382		65		2,358
Acquired loans		—		702		—		1,461
Total	$	9,628	$	43,287	$	8,259	$	43,130

The following table details the loans outstanding by class of loans for the period presented, on the basis of the impairment methodology used by the Company.

	Loans
	March 31, 2019						December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality		Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	26,281	$	612,738	$	—	$	17,846	$	608,775	$	—
Non-residential real estate other		26,695		1,163,074		—		25,333		1,120,795		—
Residential real estate permanent mortgage		8,705		324,961		—		9,026		319,676		—
Residential real estate all other		21,883		819,550		—		21,285		806,219		—
Commercial and financial:
Non-consumer non-real estate		28,722		1,297,882		—		19,432		1,264,222		—
Consumer non-real estate		2,875		324,131		—		3,093		323,769		—
Other loans		26		142,394		—		209		141,700		—
Acquired loans		14,057		221,608		6,920		22,132		265,084		7,380
Total	$	129,244	$	4,906,338	$	6,920	$	118,356	$	4,850,240	$	7,380

Non-Cash Transfers from Loans and Premises and Equipment

Transfers from loans and premises and equipment to other real estate owned and repossessed assets are non-cash transactions, and are not included in the statements of cash flow.

Transfers from loans and premises and equipment to other real estate owned and repossessed assets during the periods presented, are summarized as follows:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Other real estate owned	$	591	$	402
Repossessed assets		301		220
Total	$	892	$	622

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Intangible Assets

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

(5) INTANGIBLE ASSETS

The following is a summary of intangible assets:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
As of March 31, 2019
Core deposit intangibles	$	25,907	$	(11,785	)	$	14,122
Customer relationship intangibles		5,699		(4,202	)		1,497
Mortgage servicing intangibles		392		(310	)		82
Total	$	31,998	$	(16,297	)	$	15,701
As of December 31, 2018
Core deposit intangibles	$	25,907	$	(11,113	)	$	14,794
Customer relationship intangibles		5,699		(4,115	)		1,584
Mortgage servicing intangibles		397		(305	)		92
Total	$	32,003	$	(15,533	)	$	16,470

The following is a summary of goodwill by business segment:

					Other		Executive,
	Metropolitan		Community		Financial		Operations
	Banks		Banks		Services		& Support		Consolidated
	(Dollars in thousands)
Three months ended March 31, 2019
Balance at beginning and end of period	$	13,767	$	59,894	$	5,464	$	624	$	79,749

Additional information for intangible assets can be found in Note (7) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

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Leases

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Leases

(6)     LEASES

Lessee

On January 1, 2019, the Company adopted ASU No. 2016-02, “Leases - (Topic 842),” which requires the recognition of the Company’s operating leases on its balance sheet. See Note (1) for additional information.

The Company has operating leases, which primarily consist of office space in buildings, ATM locations, storage facilities, parking lots and land on which it owns buildings. Rent expense for all operating leases totaled approximately $357,000 and $381,000 for the three months ended March 31, 2019 and March 31, 2018, respectively. As of March 31, 2019, right of use lease asset, which is included in accrued interest receivable and other assets on the balance sheet totaled $4.3 million, and the related lease liability, which is included in accrued interest payable and other liabilities on the balance sheet totaled $4.3 million. There have been no significant changes in our expected future minimum lease payments since December 31, 2018. The future minimum lease payments are disclosed in Note (19) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. As of March 31, 2019, our operating leases have a weighted-average remaining lease term of 4.4 years and a weighted-average discount rate of 3.6 percent.

Maturity of Operating Lease Liabilities

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$                                               97
2020	1,024
2021	150
2022	1,288
2023	955
Thereafter	737
Operating Lease Liability	$                                          4,251

Lessor

The Company is a lessor of operating leases, which primarily consist of office space in buildings and parking lots. These assets are classified on the balance sheet as premises and equipment. The Company had operating lease revenue of $1.5 million during the first quarter of 2019, which is included in occupancy, net on the consolidated statement of comprehensive income.

Future Minimum Lease Payments to be received

The Company does not have in place leases beyond 2023. The following table presents the scheduled minimum future contractual rent to be received under the remaining non-cancelable term of the operating leases:

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$	3,126
2020	2,524
2021	1,624
2022	973
2023	509
Total Future Minimum Lease Payments	$	8,756

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

(7) STOCK-BASED COMPENSATION

The Company adopted a nonqualified incentive stock option plan (the “BancFirst ISOP”) in May 1986. The Company has amended the BancFirst ISOP since 1986 to increase the number of shares to be issued under the plan to 6,400,000 shares. At March 31, 2019, there were 265,470 shares available for future grants. The BancFirst ISOP will terminate on December 31, 2019, if not extended. The options vest and are exercisable beginning four years from the date of grant at the rate of 25% per year for four years. Options expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2019 will become exercisable through the year 2026. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant.

In June 1999, the Company adopted the BancFirst Corporation Non-Employee Directors’ Stock Option Plan (the “BancFirst Directors’ Stock Option Plan”). Each non-employee director is granted an option for 10,000 shares. The Company has amended the BancFirst Directors’ Stock Option Plan since 1999 to increase the number of shares to be issued under the plan to 520,000 shares. At March 31, 2019, there were 40,000 shares available for future grants. The BancFirst Directors’ Stock Option Plan will terminate on December 31, 2019, if not extended. The options vest and are exercisable beginning one year from the date of grant at the rate of 25% per year for four years, and expire at the end of fifteen years from the date of grant. Options outstanding as of March 31, 2019 will become exercisable through the year 2023. The option price must be no less than 100% of the fair value of the stock relating to such option at the date of grant.

The Company currently uses newly issued shares for stock option exercises, but reserves the right to use shares purchased under the Company’s Stock Repurchase Program (the “SRP”) in the future.

The following table is a summary of the activity under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

						Wgtd. Avg.
				Wgtd. Avg.		Remaining	Aggregate
				Exercise		Contractual	Intrinsic
	Options			Price		Term	Value
	(Dollars in thousands, except option data)
Three Months Ended March 31, 2019
Outstanding at December 31, 2018		1,216,700		$	28.48
Options granted		40,000			55.38
Options exercised		(5,500	)		28.35
Options canceled, forfeited, or expired		(22,500	)		51.83
Outstanding at March 31, 2019		1,228,700			28.93	9.39 Yrs	$	28,536
Exercisable at March 31, 2019		613,700			21.78	6.98 Yrs	$	18,639

The following table has additional information regarding options exercised under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Total intrinsic value of options exercised		$             145		$          2,860
Cash received from options exercised		156		1,233
Tax benefit realized from options exercised		37		729

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model and is based on certain assumptions including risk-free rate of return, dividend yield, stock price volatility and the expected term.  The fair value of each option is expensed over its vesting period.

The following table is a summary of the Company’s recorded stock-based compensation expense:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Stock-based compensation expense	$	174	$	306
Tax benefit		44		78
Stock-based compensation expense, net of tax	$	130	$	228

The Company will continue to amortize the unearned stock-based compensation expense over the remaining vesting period of approximately seven years.  The following table shows the unearned stock-based compensation expense:

	March 31, 2019
	(Dollars in thousands)
Unearned stock-based compensation expense	$	3,437

The following table shows the assumptions used for computing stock-based compensation expense under the fair value method on options granted during the periods presented:

	Three Months Ended March 31,
	2019		2018
Weighted average grant-date fair value per share of options granted	$	13.67	$	13.98
Risk-free interest rate	2.62 to 2.76%		2.55 to 2.92%
Dividend yield	2.00%		2.00%
Stock price volatility	22.93 to 22.96%		23.05 to 23.18%
Expected term	10 Yrs		10 Yrs

The risk-free interest rate is determined by reference to the spot zero-coupon rate for the U.S. Treasury security with a maturity similar to the expected term of the options. The dividend yield is the expected yield for the expected term.  The stock price volatility is estimated from the recent historical volatility of the Company’s stock. The expected term is estimated from the historical option exercise experience. The Company accounts for forfeitures as they occur.

In May 1999, the Company adopted the BancFirst Corporation Directors’ Deferred Stock Compensation Plan (the “BancFirst Deferred Stock Compensation Plan”). The Company has amended the BancFirst Deferred Stock Compensation Plan since 1999 to increase the number of shares to be issued under the plan to 222,220 shares. The BancFirst Deferred Stock Compensation Plan will terminate on December 31, 2019, if not extended. Under the plan, directors and members of the community advisory boards of the Company and its subsidiaries may defer up to 100% of their board fees. They are credited for each deferral with a number of stock units based on the current market price of the Company’s stock, which accumulate in an account until such time as the director or community board member terminates serving as a board member. Shares of common stock of the Company are then distributed to the terminating director or community board member based upon the number of stock units accumulated in his or her account. There were 8,362 and 2,842 shares of common stock distributed from the BancFirst Deferred Stock Compensation Plan during the three months ended March 31, 2019 and March 31, 2018, respectively.

A summary of the accumulated stock units is as follows:

	March 31,		December 31,
	2019		2018
Accumulated stock units		137,543		143,347
Average price	$	25.70	$	24.91

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Stockholders' Equity

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Stockholders' Equity

(8) STOCKHOLDERS’ EQUITY

In November 1999, the Company adopted a Stock Repurchase Program (the “SRP”). The SRP may be used as a means to increase earnings per share and return on equity, to purchase treasury stock for the exercise of stock options or for distributions under the Deferred Stock Compensation Plan, to provide liquidity for optionees to dispose of stock from exercises of their stock options, and to provide liquidity for stockholders wishing to sell their stock. All shares repurchased under the SRP have been retired and not held as treasury stock. The timing, price and amount of stock repurchases under the SRP may be determined by management and approved by the Company’s Executive Committee.

The following table is a summary of the shares under the program:

	Three Months Ended March 31,
	2019		2018
Number of shares repurchased		—		—
Average price of shares repurchased	$	—	$	—
Shares remaining to be repurchased		148,736		300,000

The Company and BancFirst are subject to risk-based capital guidelines issued by the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation (“FDIC”). These guidelines are used to evaluate capital adequacy and involve both quantitative and qualitative evaluations of the Company’s and BancFirst’s assets, liabilities and certain off-balance-sheet items calculated under regulatory practices. Failure to meet the minimum capital requirements can initiate certain mandatory or discretionary actions by the regulatory agencies that could have a direct material effect on the Company’s financial statements. Management believes that as of March 31, 2019, the Company and BancFirst met all capital adequacy requirements to which they are subject.  The actual and required capital amounts and ratios are shown in the following table:

				Required							To Be Well
				For Capital				With			Capitalized Under
				Adequacy				Capital Conservation			Prompt Corrective
	Actual			Purposes				Buffer			Action Provisions
	Amount		Ratio	Amount		Ratio		Amount		Ratio	Amount		Ratio
	(Dollars in thousands)
As of March 31, 2019:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	911,073	16.32%	$	446,687		8.00%	$	586,277	10.50%	N/A		N/A
BancFirst		788,443	14.14%		445,937		8.00%		585,292	10.50%	$	557,421		10.00%
Common Equity Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	832,158	14.90%	$	251,262		4.50%	$	390,852	7.00%	N/A		N/A
BancFirst		715,528	12.84%		250,839		4.50%		390,194	7.00%	$	362,323		6.50%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	858,158	15.37%	$	335,016		6.00%	$	474,605	8.50%	N/A		N/A
BancFirst		735,528	13.20%		334,452		6.00%		473,808	8.50%	$	445,937		8.00%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	858,158	11.38%	$	301,620		4.00%	N/A		N/A	N/A		N/A
BancFirst		735,528	9.77%		301,212		4.00%	N/A		N/A	$	376,514		5.00%

As of March 31, 2019, the most recent notification from the Federal Reserve Bank of Kansas City and the FDIC categorized BancFirst as “well capitalized” under the regulatory framework from prompt corrective action. The Company’s trust preferred securities have continued to be included in Tier 1 capital as the Company’s total assets do not exceed $15 billion. There are no conditions or events since the most recent notifications of BancFirst’s capital category that management believes would materially change its category under capital requirements existing as of the report date.

Basel III Capital Rules

Under the Basel III Capital Rules, in order to avoid limitations on capital distributions, including dividend payments and certain discretionary bonus payments to executive officers, a banking organization must hold a capital conservation buffer composed of CET1 capital above its minimum risk-based capital requirements. The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and was phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reached 2.5% on January 1, 2019). As of March 31, 2019, the Company and BancFirst met all capital adequacy requirements under the Basel III Capital Rules.

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Net Income Per Common Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Net Income Per Common Share

(9) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share based on weighted-average shares outstanding are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended March 31, 2019
Basic
Income available to common stockholders	$	31,837		32,612,399	$	0.98
Dilutive effect of stock options		—		680,453
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	31,837		33,292,852	$	0.96
Three Months Ended March 31, 2018
Basic
Income available to common stockholders	$	29,620		32,574,251	$	0.91
Dilutive effect of stock options		—		743,493
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	29,620		33,317,744	$	0.89

The following table shows the number of options that were excluded from the computation of diluted net income per common share for each period because the options were anti-dilutive for the period:

	Shares
Three Months Ended March 31, 2019		180,000
Three Months Ended March 31, 2018		113,278

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

(10) FAIR VALUE MEASUREMENTS

Accounting standards define fair value as the price that would be received to sell an asset or the price paid to transfer a liability in the principal or most advantageous market available to the entity in an orderly transaction between market participants on the measurement date.

FASB Accounting Standards Codification (“ASC”) Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs.  The fair value hierarchy is as follows:

• Level 1 Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset and liability, either directly or indirectly, for substantially the full term of the financial instrument.

• Level 3 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 values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category includes certain impaired loans, repossessed assets, other real estate owned, goodwill and other intangible assets.

Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis

A description of the valuation methodologies and key inputs used to measure financial assets and financial liabilities at fair value on a recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to the following categories of the Company’s financial assets and financial liabilities.

Securities Available for Sale

Securities classified as available for sale are reported at fair value. U.S. Treasuries are valued using Level 1 inputs. Other securities available for sale including U.S. federal agencies, registered mortgage backed securities and state and political subdivisions are valued using prices from an independent pricing service utilizing Level 2 data. 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. The Company also invests in private label mortgage backed securities for which observable information is not readily available. These securities are reported at fair value utilizing Level 3 inputs. For these securities, management determines the fair value based on replacement cost, the income approach or information provided by outside consultants or lead investors.

The Company reviews the prices for Level 1 and Level 2 securities supplied by the independent pricing service for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, the Company does not purchase investment portfolio securities that are esoteric or that have complicated structures. The Company’s portfolio primarily consists of traditional investments including U.S. Treasury obligations, federal agency mortgage pass-through securities, general obligation municipal bonds and a small amount of municipal revenue bonds. Pricing for such instruments is fairly generic and is easily obtained. For in-state bond issues that have relatively low issue sizes and liquidity, the Company utilizes the same parameters for pricing mentioned in the preceding paragraph adjusted for the specific issue. Periodically, the Company will validate prices supplied by the independent pricing service by comparison to prices obtained from third party sources.

Derivatives

Derivatives are reported at fair value utilizing Level 2 inputs. The Company obtains dealer and market quotations to value its oil and gas swaps and options.  The Company utilizes dealer quotes and observable market data inputs to substantiate internal valuation models.

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of the periods presented, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:

	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(Dollars in thousands)
March 31, 2019
Securities available for sale:
U.S. Treasury	$	652,750	$	—	$	—	$	652,750
U.S. federal agencies		—		27,954		—		27,954
Mortgage-backed securities		—		2,311		13,401		15,712
States and political subdivisions		—		27,239		—		27,239
Derivative assets		—		51		—		51
Derivative liabilities		—		49		—		49
December 31, 2018
Securities available for sale:
U.S. Treasury	$	697,466	$	—	$	—	$	697,466
U.S. federal agencies		—		29,919		—		29,919
Mortgage-backed securities		—		2,465		13,443		15,908
States and political subdivisions		—		27,411		—		27,411
Derivative assets		—		252		—		252
Derivative liabilities		—		238		—		238

The changes in Level 3 assets measured at estimated fair value on a recurring basis during the periods presented were as follows:

	Three Months Ended March 31,			Twelve Months Ended December 31,
	2019			2018
	(Dollars in thousands)
Balance at the beginning of the year	$	13,443		$	14,467
Settlements		(39	)		(1,037	)
Total unrealized (losses) gains		(3	)		13
Balance at the end of the period	$	13,401		$	13,443

The Company’s policy is to recognize transfers in and transfers out of Levels 1, 2 and 3 as of the end of the reporting period. During the three months ended March 31, 2019 and 2018, the Company did not transfer any securities between levels in the fair value hierarchy.

Financial Assets and Financial Liabilities Measured at Fair Value on a Nonrecurring Basis

Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, 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). These financial assets and financial liabilities are reported at fair value utilizing Level 3 inputs.

The Company invests in equity securities without readily determinable fair values and utilizes Level 3 inputs. Beginning January 1, 2018, upon adoption of ASU 2016-01, these securities are reported at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The realized and unrealized gains and losses are reported as securities transactions in the noninterest income section of the consolidated statements of comprehensive income.

Impaired loans are reported at the fair value of the underlying collateral if repayment is dependent on liquidation of the collateral. In no case does the fair value of an impaired loan exceed the fair value of the underlying collateral. The impaired loans are adjusted to fair value through a specific allocation of the allowance for loan losses or a direct charge-down of the loan.

Repossessed assets, upon initial recognition, are measured and adjusted to fair value through a charge-off to the allowance for possible loan losses based upon the fair value of the repossessed asset.

Other real estate owned is revalued at fair value subsequent to initial recognition, with any losses recognized in net expense from other real estate owned.

The following table summarizes assets measured at fair value on a nonrecurring basis. The fair value represents end of period values, which approximate fair value measurements that occurred on various measurement dates throughout the period:

	Total Fair Value
	Level 3
	(Dollars in thousands)
As of and for the Year-to-date Period Ended March 31, 2019
Equity securities	$	9,239
Impaired loans (less specific allowance)		36,160
Repossessed assets		184
Other real estate owned		560
As of and for the Year-to-date Period Ended December 31, 2018
Equity securities	$	7,521
Impaired loans (less specific allowance)		34,396
Repossessed assets		183
Other real estate owned		4,683

Estimated Fair Value of Financial Instruments

The Company is required under current authoritative accounting guidance to disclose the estimated fair value of their financial instruments that are not recorded at fair value. For the Company, as for most financial institutions, substantially all of its assets and liabilities are considered financial instruments. A financial instrument is defined as cash, evidence of an ownership interest in an entity or a contract that creates a contractual obligation or right to deliver or receive cash or another financial instrument from a second entity. The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

Cash and Cash Equivalents Include: Cash and Due from Banks and Interest-Bearing Deposits

The carrying amount of these short-term instruments is a reasonable estimate of fair value.

Securities Held for Investment

For securities held for investment, which are generally traded in secondary markets, fair values are based on quoted market prices or dealer quotes, if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities making adjustments for credit or liquidity if applicable.

Loans Held For Sale

The Company originates mortgage loans to be sold.  At the time of origination, the acquiring bank has already been determined and the terms of the loan, including interest rate, have already been set by the acquiring bank, allowing the Company to originate the loan at fair value. Mortgage loans are generally sold within 30 days of origination. Loans held for sale are valued using Level 2 inputs.  Gains or losses recognized upon the sale of the loans are determined on a specific identification basis.

Loans

To determine the fair value of loans, the Company uses an exit price calculation, which takes into account factors such as liquidity, credit and the nonperformance risk of loans. For certain homogeneous categories of loans, such as some residential mortgages, fair values are estimated using the quoted market prices for securities backed by similar loans, adjusted for differences in loan characteristics. The fair values of other types of loans are estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities.

Deposits

The fair values of transaction and savings accounts are the amounts payable on demand at the reporting date. The fair values of fixed-maturity certificates of deposit are estimated using the rates currently offered for deposits of similar remaining maturities.

Short-term Borrowings

The amounts payable on these short-term instruments are reasonable estimates of fair value.

Junior Subordinated Debentures

The fair values of junior subordinated debentures are estimated using the rates that would be charged for junior subordinated debentures of similar remaining maturities.

Loan Commitments and Letters of Credit

The fair values of commitments are estimated using the fees currently charged to enter into similar agreements, taking into account the terms of the agreements. The fair values of letters of credit are based on fees currently charged for similar agreements.

The estimated fair values of the Company’s financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value, are as follows:

	March 31,				December 31,
	2019				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,477,405	$	1,477,405	$	1,424,255	$	1,424,255
Securities held for investment		717		723		928		933
Loans held for sale		7,719		7,719		8,174		8,174
Level 3 inputs:
Securities held for investment		500		500		500		500
Loans, net of allowance for loan losses		4,989,587		4,988,322		4,924,587		4,901,159
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		6,706,386		6,816,792		6,605,495		6,713,542
Short-term borrowings		5,200		5,200		1,675		1,675
Junior subordinated debentures		26,804		29,131		26,804		29,549
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				2,219				2,158
Letters of credit				410				421

Non-financial Assets and Non-financial Liabilities Measured at Fair Value

The Company has no non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets and non-financial liabilities measured at fair value on a nonrecurring basis include intangible assets (excluding mortgage service rights, which are valued periodically) and other non-financial long-lived assets measured at fair value and adjusted for impairment. These items are evaluated at least annually for impairment. The overall levels of non-financial assets and non-financial liabilities measured at fair value on a nonrecurring basis were not considered to be significant to the Company at March 31, 2019 or December 31, 2018.

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Segment Information

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment Information

(11)SEGMENT INFORMATION

The Company evaluates its performance with an internal profitability measurement system that measures the profitability of its business units on a pre-tax basis. The four principal business units are metropolitan banks, community banks, other financial services and executive, operations and support. Metropolitan and community banks offer traditional banking products such as commercial and retail lending and a full line of deposit accounts. Metropolitan banks consist of banking locations in the metropolitan Oklahoma City and Tulsa areas.  Community banks consist of banking locations in communities throughout Oklahoma. Other financial services are specialty product business units including guaranteed small business lending, residential mortgage lending, trust services, securities brokerage, electronic banking and insurance. The executive, operations and support groups represent executive management, operational support and corporate functions that are not allocated to the other business units.

The results of operations and selected financial information for the four business units are as follows:

	Metropolitan Banks		Community Banks		Other Financial Services		Executive, Operations & Support			Eliminations			Consolidated
	(Dollars in thousands)
Three Months Ended March 31, 2019
Net interest income	$	21,353	$	43,407	$	1,171	$	972		$	—		$	66,903
Noninterest income		4,209		14,885		9,873		35,521			(32,487	)		32,001
Income before taxes		15,369		28,045		4,499		25,023			(31,922	)		41,014
Three Months Ended March 31, 2018
Net interest income (expense)	$	20,304	$	41,382	$	1,475	$	(126	)	$	—		$	63,035
Noninterest income		3,941		13,953		9,624		32,194			(29,602	)		30,110
Income before taxes		14,736		26,348		5,043		19,915			(29,101	)		36,941
Total Assets:
March 31, 2019	$	2,763,523	$	4,995,379	$	69,430	$	912,166		$	(1,031,498	)	$	7,709,000
December 31, 2018		2,743,876		4,892,946		84,706		861,782			(1,009,052	)		7,574,258

The financial information for each business unit is presented on the basis used internally by management to evaluate performance and allocate resources.  The Company utilizes a transfer pricing system to allocate the benefit or cost of funds provided or used by the various business units.  Certain services provided by the support group to other business units, such as item processing, are allocated at rates approximating the cost of providing the services.  Eliminations are adjustments to consolidate the business units and companies. Capital expenditures are generally charged to the business unit using the asset.

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Subsequent Event

3 Months Ended

Mar. 31, 2019

Subsequent Events [Abstract]

Subsequent Event

(12) SUBSEQUENT EVENT

On April 23, 2019 BancFirst Corporation entered into an agreement to acquire Pegasus Bank (“Pegasus”), for an aggregate cash purchase price of $122.0 million. Pegasus is a Texas chartered bank with three banking locations in Dallas, Texas. As of December 31, 2018, Pegasus had approximately $639.1 million in total assets, $367.4 million in loans and $595.3 million in deposits. The acquisition is expected to be completed during the third quarter of 2019 and is subject to regulatory approval. Upon acquisition, Pegasus will continue to operate as “Pegasus Bank” under a separate Texas charter and remain an independent subsidiary of BancFirst Corporation governed by its existing board of directors. BancFirst Corporation intends to provide an appropriate amount of capital or other support to increase Pegasus’ ability to approve larger loans and allow Pegasus to continue to grow their assets.

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Description of Business and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited interim consolidated financial statements include the accounts of BancFirst Corporation, Council Oak Partners, LLC, BancFirst Insurance Services, Inc., BancFirst Risk & Insurance Company and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BFTower, LLC and BancFirst Agency, Inc. All significant intercompany accounts and transactions have been eliminated. Assets held in a fiduciary or agency capacity are not assets of the Company and, accordingly, are not included in the unaudited interim consolidated financial statements.

The accompanying unaudited interim consolidated financial statements and notes are presented in accordance with the instructions for Form 10-Q. The information contained in the financial statements and footnotes included in BancFirst Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, should be referred to in connection with these unaudited interim consolidated financial statements. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

The unaudited interim consolidated financial statements contained herein reflect all adjustments which are, in the opinion of management, necessary to provide a fair statement of the financial position and results of operations of the Company for the interim periods presented. All such adjustments are of a normal and recurring nature. There have been no significant changes in the accounting policies of the Company since December 31, 2018, the date of the most recent annual report.

Reclassifications

Reclassifications

Certain items in prior financial statements have been reclassified to conform to the current presentation. Such reclassifications had no effect on previously reported cash flows, stockholders’ equity or comprehensive income.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States inherently involves the use of estimates and assumptions that affect the amounts reported in the financial statements and the related disclosures. These estimates relate principally to the determination of the allowance for loan losses, income taxes, the fair value of financial instruments and the valuation of intangibles. Such estimates and assumptions may change over time and actual amounts realized may differ from those reported.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Standards Adopted During Current Period:

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “Leases - (Topic 842)”, amended by ASU 2018-11, “Leases – (Topic 842)”: Targeted Improvements. This new guidance requires a lessee to recognize on the balance sheet the assets and liabilities for the rights and obligations created by leases with lease terms of more than twelve months and provide additional disclosures. The amendments were effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2018. The Company adopted this new standard on January 1, 2019, using a modified retrospective transition approach and recognized right-of-use lease assets and related lease liabilities totaling $4.3 million. The Company elected to apply certain practical adoption expedients provided under the updates whereby it did not reassess initial direct costs for any existing leases.No cumulative-effect adjustment was recognized as the amount was not material, and the impact on our results of operations and cash flows was also not material. No prior periods were adjusted. See Note 6 for the financial position impact and additional disclosures.

Standards Not Yet Adopted:

In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820).” ASU 2018-13 removes, modifies and adds disclosure requirements on fair value measurements. ASU 2018-13 will be effective for the Company on January 1, 2020. Early adoption is permitted. In addition, early adoption of any removed or modified disclosures and delayed adoption of the additional disclosures until the effective date is also permitted. The Company expects to adopt the standard in the first quarter of 2020.

In June 2016, the FASB issued ASU No.  2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires a financial asset measured at amortized cost basis to be presented at the net amount expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 requires enhanced disclosures related to the significant estimates and judgements used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for the Company on January 1, 2020. The Company is currently evaluating the potential impact of ASU 2016-13 on its financial statements. In that regard, the Company has formed a task force under the direction of its Chief Financial Officer. In preparation, the Company has developed new credit estimation models, processes and controls. Internal validation of the model is underway and expected to be completed early in 2019. The Company has performed test runs of the new processes and controls and expects to begin full parallel runs by mid-2019. The impact of the standard will depend on the composition of the Company’s portfolio as well as economic conditions and forecasts at the time of adoption. The adoption of ASU 2016-13 could result in an increase in the allowance for loan losses as a result of changing from an “incurred loss” model, which encompasses allowances for current known and inherent losses within the portfolio, to an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate that we establish an allowance for expected credit losses for certain debt securities and other financial assets. While we are currently unable to reasonably estimate the impact of adopting ASU 2016-13, we expect that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. The Company expects to adopt the standard in the first quarter of 2020.

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Securities (Tables)

3 Months Ended

Mar. 31, 2019

Investments Debt And Equity Securities [Abstract]

Summary of Amortized Cost and Estimated Fair Values of Debt Securities Held for Investment

The following table summarizes the amortized cost and estimated fair values of debt securities held for investment:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
March 31, 2019	(Dollars in thousands)
Mortgage backed securities (1)	$	122	$	6	$	—	$	128
States and political subdivisions		595		—		—		595
Other securities		500		—		—		500
Total	$	1,217	$	6	$	—	$	1,223
December 31, 2018
Mortgage backed securities (1)	$	133	$	5	$	—	$	138
States and political subdivisions		795		—		—		795
Other securities		500		—		—		500
Total	$	1,428	$	5	$	—	$	1,433

Summary of Amortized Cost and Estimated Fair Values of Debt Securities Available for Sale

The following table summarizes the amortized cost and estimated fair values of debt securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2019	(Dollars in thousands)
U.S. treasuries	$	651,860	$	2,847	$	(1,957	)	$	652,750
U.S. federal agencies		28,106		—		(152	)		27,954
Mortgage backed securities (1)		16,162		126		(576	)		15,712
States and political subdivisions		26,989		317		(67	)		27,239
Total	$	723,117	$	3,290	$	(2,752	)	$	723,655
December 31, 2018
U.S. treasuries	$	699,882	$	1,108	$	(3,524	)	$	697,466
U.S. federal agencies		30,079		—		(160	)		29,919
Mortgage backed securities (1)		16,367		114		(573	)		15,908
States and political subdivisions		27,246		277		(112	)		27,411
Total	$	773,574	$	1,499	$	(4,369	)	$	770,704

(1) Primarily consists of FHLMC, FNMA, GNMA and mortgage backed securities through U.S. agencies.

Maturity of Debt Securities

The maturities of debt securities held for investment and available for sale are summarized in the following table using contractual maturities. Actual maturities may differ from contractual maturities due to obligations that are called or prepaid. For purposes of the maturity table, mortgage-backed securities, which are not due at a single maturity date, have been presented at their contractual maturity.

	March 31, 2019				December 31, 2018
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	295	$	295	$	495	$	495
After one year but within five years		368		370		369		370
After five years but within ten years		552		556		562		565
After ten years		2		2		2		3
Total	$	1,217	$	1,223	$	1,428	$	1,433
Available for Sale
Contractual maturity of debt securities:
Within one year	$	403,084	$	402,210	$	411,256	$	410,327
After one year but within five years		273,033		274,838		313,416		311,924
After five years but within ten years		7,265		7,487		7,524		7,685
After ten years		39,735		39,120		41,378		40,768
Total debt securities	$	723,117	$	723,655	$	773,574	$	770,704

Company's Book Value of Pledged Debt Securities

The following table is a summary of the Company’s book value of securities that were pledged as collateral for public funds on deposit, repurchase agreements and for other purposes as required or permitted by law:

	March 31, 2019		December 31, 2018
	(Dollarsin thousands)
Book value of pledged securities	$	418,807	$	472,053

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Loans and Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Schedule of Loans Outstanding by Category

The following is a schedule of loans outstanding by category:

	March 31, 2019					December 31, 2018
	Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and financial:
Commercial and industrial	$	1,043,848		20.70	%	$	1,032,787		20.76	%
Oil & gas production and equipment		106,991		2.12			94,729		1.90
Agriculture		130,717		2.59			136,313		2.74
State and political subdivisions:
Taxable		73,051		1.45			76,211		1.53
Tax-exempt		49,833		0.99			48,415		0.97
Real estate:
Construction		469,826		9.32			451,224		9.07
Farmland		227,526		4.51			219,241		4.41
One to four family residences		982,605		19.49			979,170		19.68
Multifamily residential properties		68,412		1.36			65,949		1.33
Commercial		1,514,266		30.03			1,506,937		30.28
Consumer		326,002		6.46			328,069		6.59
Other (not classified above)		49,425		0.98			36,931		0.74
Total loans	$	5,042,502		100.00	%	$	4,975,976		100.00	%

Summary of Nonperforming and Restructured Assets

The following is a summary of nonperforming and restructured assets:

	March 31,		December 31,
	2019		2018
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	2,170	$	1,916
Nonaccrual		21,594		22,603
Restructured		14,552		13,188
Total nonperforming and restructured loans		38,316		37,707
Other real estate owned and repossessed assets		6,433		6,873
Total nonperforming and restructured assets	$	44,749	$	44,580

Summary of Amounts Included in Nonaccrual Loans Segregated by Class of Loans

Loans are segregated into classes based upon the nature of the collateral and the borrower. These classes are used to estimate the allowance for loan losses. The following table is a summary of amounts included in nonaccrual loans, segregated by class of loans. Residential real estate refers to one-to-four family real estate.

	March 31, 2019		December 31, 2018
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	769	$	838
Non-residential real estate other		1,030		187
Residential real estate permanent mortgage		1,208		954
Residential real estate all other		5,729		5,488
Commercial and financial:
Non-consumer non-real estate		5,132		5,682
Consumer non-real estate		422		437
Other loans		393		490
Acquired loans		6,911		8,527
Total	$	21,594	$	22,603

Age Analysis of Past Due Loans Segregated by Class of Loans

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days and Greater		Total Past Due Loans		Current Loans		Total Loans		Accruing Loans 90 Days or More Past Due
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	8,948	$	30	$	123	$	9,101	$	629,918	$	639,019	$	117
Non-residential real estate other		2,089		152		593		2,834		1,186,935		1,189,769		121
Residential real estate permanent mortgage		3,374		634		801		4,809		328,857		333,666		401
Residential real estate all other		2,239		4,002		2,327		8,568		832,865		841,433		247
Commercial and financial:
Non-consumer non-real estate		3,226		999		2,164		6,389		1,320,215		1,326,604		453
Consumer non-real estate		1,498		548		311		2,357		324,649		327,006		173
Other loans		1,485		156		92		1,733		140,687		142,420		—
Acquired loans		1,528		1,689		4,290		7,507		235,078		242,585		658
Total	$	24,387	$	8,210	$	10,701	$	43,298	$	4,999,204	$	5,042,502	$	2,170
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	5,114	$	810	$	43	$	5,967	$	620,654	$	626,621	$	—
Non-residential real estate other		2,772		32		114		2,918		1,143,210		1,146,128		—
Residential real estate permanent mortgage		2,448		653		693		3,794		324,908		328,702		430
Residential real estate all other		1,728		292		2,799		4,819		822,685		827,504		612
Commercial and financial:
Non-consumer non-real estate		3,620		702		833		5,155		1,278,499		1,283,654		282
Consumer non-real estate		1,991		565		559		3,115		323,747		326,862		325
Other loans		322		158		178		658		141,251		141,909		—
Acquired loans		5,240		1,669		4,936		11,845		282,751		294,596		267
Total	$	23,235	$	4,881	$	10,155	$	38,271	$	4,937,705	$	4,975,976	$	1,916

Impaired Loans Segregated by Class of Loans

The following table presents impaired loans, segregated by class of loans. During the period ended March 31, 2019 and March 31, 2018, no material amount of interest income was recognized on impaired loans subsequent to their classification as impaired.

	Impaired Loans
	Unpaid Principal Balance		Recorded Investment with Allowance		Related Allowance		Average Recorded Investment
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	7,730	$	7,619	$	228	$	7,362
Non-residential real estate other		1,976		1,722		212		1,247
Residential real estate permanent mortgage		1,871		1,619		143		1,618
Residential real estate all other		7,153		6,854		2,478		7,024
Commercial and financial:
Non-consumer non-real estate		18,769		11,120		857		10,976
Consumer non-real estate		767		660		133		724
Other loans		694		422		31		369
Acquired loans		12,764		10,228		2		11,078
Total	$	51,724	$	40,244	$	4,084	$	40,398
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	7,126	$	6,933	$	202	$	7,739
Non-residential real estate other		949		757		50		6,057
Residential real estate permanent mortgage		1,789		1,545		127		1,650
Residential real estate all other		7,177		6,862		2,433		7,154
Commercial and financial:
Non-consumer non-real estate		18,507		10,977		881		12,140
Consumer non-real estate		928		829		131		846
Other loans		710		490		35		481
Acquired loans		12,846		9,864		2		11,050
Total	$	50,032	$	38,257	$	3,861	$	47,117

Internal Loan Grading by Class of Loans

The following table presents internal loan grading by class of loans:

	Internal Loan Grading
	Grade
		1		2		3		4		5	Total
	(Dollars in thousands)
As of March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	459,381	$	153,357	$	25,456	$	825	$	—	$	639,019
Non-residential real estate other		956,483		206,591		25,665		1,030		—		1,189,769
Residential real estate permanent mortgage		283,951		41,010		7,080		1,625		—		333,666
Residential real estate all other		659,846		159,703		15,943		5,941		—		841,433
Commercial and financial:
Non-consumer non-real estate		1,033,690		264,192		24,726		3,996		—		1,326,604
Consumer non-real estate		302,263		21,860		2,246		637		—		327,006
Other loans		136,737		4,317		1,348		18		—		142,420
Acquired loans		127,474		94,135		13,455		7,206		315		242,585
Total	$	3,959,825	$	945,165	$	115,919	$	21,278	$	315	$	5,042,502
As of December 31, 2018
Real estate:
Non-residential real estate owner occupied	$	451,059	$	157,715	$	16,949	$	898	$	—	$	626,621
Non-residential real estate other		932,454		188,341		25,146		187		—		1,146,128
Residential real estate permanent mortgage		279,870		39,806		7,401		1,625		—		328,702
Residential real estate all other		644,217		162,003		15,232		6,052		—		827,504
Commercial and financial:
Non-consumer non-real estate		1,000,089		264,134		15,128		4,303		—		1,283,654
Consumer non-real estate		302,217		21,600		2,255		790		—		326,862
Other loans		136,132		5,542		116		119		—		141,909
Acquired loans		156,008		109,075		20,884		8,284		345		294,596
Total	$	3,902,046	$	948,216	$	103,111	$	22,258	$	345	$	4,975,976

Activity in ALL by Class of Loans

The following table details activity in the ALL by class of loans for the period presented. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2019
Real estate:
Non-residential real estate owner occupied	$	6,328	$	(6	)	$	1	$	(5	)	$	332		$	6,655
Non-residential real estate other		11,027		(6	)		—		(6	)		341			11,362
Residential real estate permanent mortgage		3,261		(63	)		5		(58	)		58			3,261
Residential real estate all other		10,673		(52	)		2		(50	)		423			11,046
Commercial and financial:
Non-consumer non-real estate		13,151		(70	)		67		(3	)		1,261			14,409
Consumer non-real estate		3,065		(120	)		71		(49	)		56			3,072
Other loans		2,423		—			35		35			(50	)		2,408
Acquired loans		1,461		(26	)		4		(22	)		(737	)		702
Total	$	51,389	$	(343	)	$	185	$	(158	)	$	1,684		$	52,915

	ALL
	Balance at beginning of period		Charge- offs			Recoveries		Net charge-offs			Provisions charged to operations			Balance at end of period
	(Dollars in thousands)
Three Months Ended March 31, 2018
Real estate:
Non-residential real estate owner occupied	$	6,195	$	(19	)	$	1	$	(18	)	$	473		$	6,650
Non-residential real estate other		10,519		(1	)		39		38			(9	)		10,548
Residential real estate permanent mortgage		3,226		(56	)		3		(53	)		108			3,281
Residential real estate all other		9,672		(90	)		3		(87	)		246			9,831
Commercial and financial:
Non-consumer non-real estate		15,334		(156	)		13		(143	)		(406	)		14,785
Consumer non-real estate		2,793		(250	)		80		(170	)		76			2,699
Other loans		2,481		—			12		12			(157	)		2,336
Acquired loans		1,446		(27	)		18		(9	)		(17	)		1,420
Total	$	51,666	$	(599	)	$	169	$	(430	)	$	314		$	51,550

Allowance for Loan Losses Outstanding by Impairment Methodology

The following table details the amount of ALL by class of loans for the period presented, detailed on the basis of the impairment methodology used by the Company.

	ALL
	March 31, 2019				December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied.	$	986	$	5,669	$	669	$	5,659
Non-residential real estate other		1,024		10,338		1,119		9,908
Residential real estate permanent mortgage		457		2,804		505		2,756
Residential real estate all other		3,691		7,355		3,413		7,260
Commercial and financial:
Non-consumer non-real estate		3,069		11,340		2,114		11,037
Consumer non-real estate		375		2,697		374		2,691
Other loans		26		2,382		65		2,358
Acquired loans		—		702		—		1,461
Total	$	9,628	$	43,287	$	8,259	$	43,130

Loans Outstanding by Impairment Methodology

The following table details the loans outstanding by class of loans for the period presented, on the basis of the impairment methodology used by the Company.

	Loans
	March 31, 2019						December 31, 2018
	Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality		Individually evaluated for impairment		Collectively evaluated for impairment		Loans acquired with deteriorated credit quality
	(Dollars in thousands)
Real estate:
Non-residential real estate owner occupied	$	26,281	$	612,738	$	—	$	17,846	$	608,775	$	—
Non-residential real estate other		26,695		1,163,074		—		25,333		1,120,795		—
Residential real estate permanent mortgage		8,705		324,961		—		9,026		319,676		—
Residential real estate all other		21,883		819,550		—		21,285		806,219		—
Commercial and financial:
Non-consumer non-real estate		28,722		1,297,882		—		19,432		1,264,222		—
Consumer non-real estate		2,875		324,131		—		3,093		323,769		—
Other loans		26		142,394		—		209		141,700		—
Acquired loans		14,057		221,608		6,920		22,132		265,084		7,380
Total	$	129,244	$	4,906,338	$	6,920	$	118,356	$	4,850,240	$	7,380

Transfers from Loans and Premises and Equipment to Other Real Estate Owned and Repossessed Assets

Transfers from loans and premises and equipment to other real estate owned and repossessed assets during the periods presented, are summarized as follows:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Other real estate owned	$	591	$	402
Repossessed assets		301		220
Total	$	892	$	622

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The following is a summary of intangible assets:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
As of March 31, 2019
Core deposit intangibles	$	25,907	$	(11,785	)	$	14,122
Customer relationship intangibles		5,699		(4,202	)		1,497
Mortgage servicing intangibles		392		(310	)		82
Total	$	31,998	$	(16,297	)	$	15,701
As of December 31, 2018
Core deposit intangibles	$	25,907	$	(11,113	)	$	14,794
Customer relationship intangibles		5,699		(4,115	)		1,584
Mortgage servicing intangibles		397		(305	)		92
Total	$	32,003	$	(15,533	)	$	16,470

Summary of Goodwill by Business Segment

The following is a summary of goodwill by business segment:

					Other		Executive,
	Metropolitan		Community		Financial		Operations
	Banks		Banks		Services		& Support		Consolidated
	(Dollars in thousands)
Three months ended March 31, 2019
Balance at beginning and end of period	$	13,767	$	59,894	$	5,464	$	624	$	79,749

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Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Schedule of Maturity of Operating Lease Liabilities

Maturity of Operating Lease Liabilities

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$                                               97
2020	1,024
2021	150
2022	1,288
2023	955
Thereafter	737
Operating Lease Liability	$                                          4,251

Scheduled of Minimum Future Contractual Rent To be Received Under The Remaining Non-Cancelable Term of Operating Leases

The following table presents the scheduled minimum future contractual rent to be received under the remaining non-cancelable term of the operating leases:

	March 31, 2019
	(Dollars in thousands)
2019 (nine months)	$	3,126
2020	2,524
2021	1,624
2022	973
2023	509
Total Future Minimum Lease Payments	$	8,756

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity Under Stock Option Plan

The following table is a summary of the activity under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

						Wgtd. Avg.
				Wgtd. Avg.		Remaining	Aggregate
				Exercise		Contractual	Intrinsic
	Options			Price		Term	Value
	(Dollars in thousands, except option data)
Three Months Ended March 31, 2019
Outstanding at December 31, 2018		1,216,700		$	28.48
Options granted		40,000			55.38
Options exercised		(5,500	)		28.35
Options canceled, forfeited, or expired		(22,500	)		51.83
Outstanding at March 31, 2019		1,228,700			28.93	9.39 Yrs	$	28,536
Exercisable at March 31, 2019		613,700			21.78	6.98 Yrs	$	18,639

Options Exercised Under Stock Option Plan

The following table has additional information regarding options exercised under both the BancFirst ISOP and the BancFirst Directors’ Stock Option Plan:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Total intrinsic value of options exercised		$             145		$          2,860
Cash received from options exercised		156		1,233
Tax benefit realized from options exercised		37		729

Stock-based Employee Compensation Expense

The following table is a summary of the Company’s recorded stock-based compensation expense:

	Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Stock-based compensation expense	$	174	$	306
Tax benefit		44		78
Stock-based compensation expense, net of tax	$	130	$	228

Unearned Stock-based Compensation Expense

The Company will continue to amortize the unearned stock-based compensation expense over the remaining vesting period of approximately seven years.  The following table shows the unearned stock-based compensation expense:

	March 31, 2019
	(Dollars in thousands)
Unearned stock-based compensation expense	$	3,437

Assumptions Used for Computing Stock-Based Compensation Expense

The following table shows the assumptions used for computing stock-based compensation expense under the fair value method on options granted during the periods presented:

	Three Months Ended March 31,
	2019		2018
Weighted average grant-date fair value per share of options granted	$	13.67	$	13.98
Risk-free interest rate	2.62 to 2.76%		2.55 to 2.92%
Dividend yield	2.00%		2.00%
Stock price volatility	22.93 to 22.96%		23.05 to 23.18%
Expected term	10 Yrs		10 Yrs

Summary of Accumulated Stock Units

A summary of the accumulated stock units is as follows:

	March 31,		December 31,
	2019		2018
Accumulated stock units		137,543		143,347
Average price	$	25.70	$	24.91

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Summary of Shares Repurchased Under Stock Purchase Program

The following table is a summary of the shares under the program:

	Three Months Ended March 31,
	2019		2018
Number of shares repurchased		—		—
Average price of shares repurchased	$	—	$	—
Shares remaining to be repurchased		148,736		300,000

Required Capital Amounts and Company's Respective Ratios

The actual and required capital amounts and ratios are shown in the following table:

				Required							To Be Well
				For Capital				With			Capitalized Under
				Adequacy				Capital Conservation			Prompt Corrective
	Actual			Purposes				Buffer			Action Provisions
	Amount		Ratio	Amount		Ratio		Amount		Ratio	Amount		Ratio
	(Dollars in thousands)
As of March 31, 2019:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	911,073	16.32%	$	446,687		8.00%	$	586,277	10.50%	N/A		N/A
BancFirst		788,443	14.14%		445,937		8.00%		585,292	10.50%	$	557,421		10.00%
Common Equity Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	832,158	14.90%	$	251,262		4.50%	$	390,852	7.00%	N/A		N/A
BancFirst		715,528	12.84%		250,839		4.50%		390,194	7.00%	$	362,323		6.50%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	858,158	15.37%	$	335,016		6.00%	$	474,605	8.50%	N/A		N/A
BancFirst		735,528	13.20%		334,452		6.00%		473,808	8.50%	$	445,937		8.00%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	858,158	11.38%	$	301,620		4.00%	N/A		N/A	N/A		N/A
BancFirst		735,528	9.77%		301,212		4.00%	N/A		N/A	$	376,514		5.00%

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Net Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Basic and Diluted Net Income Per Common Share Based on Weighted-average Shares Outstanding

Basic and diluted net income per common share based on weighted-average shares outstanding are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended March 31, 2019
Basic
Income available to common stockholders	$	31,837		32,612,399	$	0.98
Dilutive effect of stock options		—		680,453
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	31,837		33,292,852	$	0.96
Three Months Ended March 31, 2018
Basic
Income available to common stockholders	$	29,620		32,574,251	$	0.91
Dilutive effect of stock options		—		743,493
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	29,620		33,317,744	$	0.89

Options Excluded From Computation of Diluted Net Income Per Common Share

The following table shows the number of options that were excluded from the computation of diluted net income per common share for each period because the options were anti-dilutive for the period:

	Shares
Three Months Ended March 31, 2019		180,000
Three Months Ended March 31, 2018		113,278

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Assets and Liabilities Measured on Recurring Basis

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of the periods presented, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:

	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(Dollars in thousands)
March 31, 2019
Securities available for sale:
U.S. Treasury	$	652,750	$	—	$	—	$	652,750
U.S. federal agencies		—		27,954		—		27,954
Mortgage-backed securities		—		2,311		13,401		15,712
States and political subdivisions		—		27,239		—		27,239
Derivative assets		—		51		—		51
Derivative liabilities		—		49		—		49
December 31, 2018
Securities available for sale:
U.S. Treasury	$	697,466	$	—	$	—	$	697,466
U.S. federal agencies		—		29,919		—		29,919
Mortgage-backed securities		—		2,465		13,443		15,908
States and political subdivisions		—		27,411		—		27,411
Derivative assets		—		252		—		252
Derivative liabilities		—		238		—		238

Changes in Level 3 Assets Measured at Estimated Fair Value on Recurring Basis

The changes in Level 3 assets measured at estimated fair value on a recurring basis during the periods presented were as follows:

	Three Months Ended March 31,			Twelve Months Ended December 31,
	2019			2018
	(Dollars in thousands)
Balance at the beginning of the year	$	13,443		$	14,467
Settlements		(39	)		(1,037	)
Total unrealized (losses) gains		(3	)		13
Balance at the end of the period	$	13,401		$	13,443

Assets Measured at Fair Value on Nonrecurring Basis

The following table summarizes assets measured at fair value on a nonrecurring basis. The fair value represents end of period values, which approximate fair value measurements that occurred on various measurement dates throughout the period:

	Total Fair Value
	Level 3
	(Dollars in thousands)
As of and for the Year-to-date Period Ended March 31, 2019
Equity securities	$	9,239
Impaired loans (less specific allowance)		36,160
Repossessed assets		184
Other real estate owned		560
As of and for the Year-to-date Period Ended December 31, 2018
Equity securities	$	7,521
Impaired loans (less specific allowance)		34,396
Repossessed assets		183
Other real estate owned		4,683

Estimated Fair Values of Financial Instruments

The estimated fair values of the Company’s financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value, are as follows:

	March 31,				December 31,
	2019				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,477,405	$	1,477,405	$	1,424,255	$	1,424,255
Securities held for investment		717		723		928		933
Loans held for sale		7,719		7,719		8,174		8,174
Level 3 inputs:
Securities held for investment		500		500		500		500
Loans, net of allowance for loan losses		4,989,587		4,988,322		4,924,587		4,901,159
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		6,706,386		6,816,792		6,605,495		6,713,542
Short-term borrowings		5,200		5,200		1,675		1,675
Junior subordinated debentures		26,804		29,131		26,804		29,549
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				2,219				2,158
Letters of credit				410				421

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Results of Operations and Selected Financial Information

The results of operations and selected financial information for the four business units are as follows:

	Metropolitan Banks		Community Banks		Other Financial Services		Executive, Operations & Support			Eliminations			Consolidated
	(Dollars in thousands)
Three Months Ended March 31, 2019
Net interest income	$	21,353	$	43,407	$	1,171	$	972		$	—		$	66,903
Noninterest income		4,209		14,885		9,873		35,521			(32,487	)		32,001
Income before taxes		15,369		28,045		4,499		25,023			(31,922	)		41,014
Three Months Ended March 31, 2018
Net interest income (expense)	$	20,304	$	41,382	$	1,475	$	(126	)	$	—		$	63,035
Noninterest income		3,941		13,953		9,624		32,194			(29,602	)		30,110
Income before taxes		14,736		26,348		5,043		19,915			(29,101	)		36,941
Total Assets:
March 31, 2019	$	2,763,523	$	4,995,379	$	69,430	$	912,166		$	(1,031,498	)	$	7,709,000
December 31, 2018		2,743,876		4,892,946		84,706		861,782			(1,009,052	)		7,574,258

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Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	Mar. 31, 2019 USD ($)
Accounting Policies [Abstract]
Right-of-use lease assets	$ 4.3
Lease liabilities	$ 4.3

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Recent Developments Including Mergers and Acquisitions - Additional Information (Detail) $ in Thousands	Dec. 14, 2018 USD ($) ParkingSpaces	Aug. 31, 2018 USD ($) ft² Floor	Jan. 11, 2018 USD ($) Community Location	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Combination Separately Recognized Transactions [Line Items]
Goodwill				$ 79,749	$ 79,749
Number of additional banking communities | Community			5
First Bank & Trust Company [Member]
Business Combination Separately Recognized Transactions [Line Items]
Date of acquisition			Jan. 11, 2018
Total assets acquired			$ 290,000
Loans			247,000
Deposits			251,000
Intangibles assets, net			6,300
Goodwill			$ 19,100
First Bank of Chandler [Member]
Business Combination Separately Recognized Transactions [Line Items]
Date of acquisition			Jan. 11, 2018
Total assets acquired			$ 88,000
Loans			66,000
Deposits			79,000
Intangibles assets, net			2,200
Goodwill			$ 6,600
Number of locations acquired | Location			2
BFTower LLC [Member] | Cotter Ranch Tower [Member]
Business Combination Separately Recognized Transactions [Line Items]
Contract price		$ 21,000
Number of square feet | ft²		507,000
Number of floors | Floor		36
Date of acquisition		Aug. 31, 2018
Percentage of property leased		55.00%
Percentage of occupancy		35.00%
Percentage of occupancy including leased space		90.00%
Renovations completion year		2020
Renovations cost		$ 70,000
BFTower LLC [Member] | Cotter Ranch Tower [Member] | SFPG, LLC [Member]
Business Combination Separately Recognized Transactions [Line Items]
Ownership interest acquired	42.60%
Space of parking garage | ParkingSpaces	1,568
Payment to acquire ownership interest	$ 9,800

XML

Securities - Summary of Amortized Cost and Estimated Fair Values of Debt Securities Held for Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 1,217	$ 1,428
Gross Unrealized Gains	6	5
Estimated Fair Value	1,223	1,433
Mortgage Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	122	133
Gross Unrealized Gains	6	5
Estimated Fair Value	128	138
States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	595	795
Estimated Fair Value	595	795
Other Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	500	500
Estimated Fair Value	$ 500	$ 500

XML

Securities - Summary of Amortized Cost and Estimated Fair Values of Debt Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 723,117	$ 773,574
Gross Unrealized Gains	3,290	1,499
Gross Unrealized Losses	(2,752)	(4,369)
Estimated Fair Value	723,655	770,704
U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	651,860	699,882
Gross Unrealized Gains	2,847	1,108
Gross Unrealized Losses	(1,957)	(3,524)
Estimated Fair Value	652,750	697,466
U.S. Federal Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	28,106	30,079
Gross Unrealized Losses	(152)	(160)
Estimated Fair Value	27,954	29,919
Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,162	16,367
Gross Unrealized Gains	126	114
Gross Unrealized Losses	(576)	(573)
Estimated Fair Value	15,712	15,908
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	26,989	27,246
Gross Unrealized Gains	317	277
Gross Unrealized Losses	(67)	(112)
Estimated Fair Value	$ 27,239	$ 27,411

XML

Securities - Maturity of Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Held for Investment, Contractual maturity of debt securities, Amortized Cost
Amortized cost, Within one year	$ 295	$ 495
Amortized cost, After one year but within five years	368	369
Amortized cost, After five years but within ten years	552	562
Amortized cost, After ten years	2	2
Amortized Cost	1,217	1,428
Available for sale, Contractual maturity of debt securities, Amortized Cost
Amortized Cost, Within one year	403,084	411,256
Amortized Cost, After one year but within five years	273,033	313,416
Amortized Cost, After five years but within ten years	7,265	7,524
Amortized Cost, After ten years	39,735	41,378
Amortized Cost	723,117	773,574
Held for Investment, Contractual maturity of debt securities, Estimated Fair Value
Estimated Fair Value, Within one year	295	495
Estimated Fair Value, After one year but within five years	370	370
Estimated Fair Value, After five years but within ten years	556	565
Estimated Fair Value, After ten years	2	3
Estimated Fair Value	1,223	1,433
Available for sale, Contractual maturity of debt securities, Estimated Fair Value
Estimated Fair Value, Within one year	402,210	410,327
Estimated Fair Value, After one year but within five years	274,838	311,924
Estimated Fair Value, After five years but within ten years	7,487	7,685
Estimated Fair Value, After ten years	39,120	40,768
Total debt securities	$ 723,655	$ 770,704

XML

Securities - Company's Book Value of Pledged Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Pledged Financial Instruments Not Separately Reported Securities Pledged By Type Of Security [Abstract]
Book value of pledged securities	$ 418,807	$ 472,053

XML

Securities - Additional Information (Detail) $ in Millions	Mar. 31, 2019 USD ($)
Accrued Interest Receivable and Other Assets [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities matured	$ 50.0

XML

Loans and Allowance for Loan Losses - Schedule of Loans Outstanding by Category (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 5,042,502	$ 4,975,976
Percent	100.00%	100.00%
Taxable [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 73,051	$ 76,211
Percent	1.45%	1.53%
Tax-exempt [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 49,833	$ 48,415
Percent	0.99%	0.97%
Commercial and Financial [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 1,043,848	$ 1,032,787
Percent	20.70%	20.76%
Commercial and Financial [Member] | Oil & Gas Production And Equipment [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 106,991	$ 94,729
Percent	2.12%	1.90%
Commercial and Financial [Member] | Agriculture [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 130,717	$ 136,313
Percent	2.59%	2.74%
Real Estate [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 469,826	$ 451,224
Percent	9.32%	9.07%
Real Estate [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 227,526	$ 219,241
Percent	4.51%	4.41%
Real Estate [Member] | One to Four Family Residences [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 982,605	$ 979,170
Percent	19.49%	19.68%
Real Estate [Member] | Multifamily Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 68,412	$ 65,949
Percent	1.36%	1.33%
Real Estate [Member] | Commercial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 1,514,266	$ 1,506,937
Percent	30.03%	30.28%
Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 326,002	$ 328,069
Percent	6.46%	6.59%
Other (Not Classified Above) [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 49,425	$ 36,931
Percent	0.98%	0.74%

XML

Loans and Allowance for Loan Losses - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 5,042,502,000		$ 4,975,976,000
Percentage of loans secured by real estate	65.00%
Interest income that would have been recognized	$ 544,000	$ 542,000
Interest income recognized on impaired loans	0	$ 0
Commercial and Industrial [Member] | Ancillary Services [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 61,000,000		$ 60,000,000

XML

Loans and Allowance for Loan Losses - Summary of Nonperforming and Restructured Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Summary Of Nonperforming And Restructured Assets [Abstract]
Past due 90 days or more and still accruing	$ 2,170	$ 1,916
Nonaccrual	21,594	22,603
Restructured	14,552	13,188
Total nonperforming and restructured loans	38,316	37,707
Other real estate owned and repossessed assets	6,433	6,873
Total nonperforming and restructured assets	$ 44,749	$ 44,580

XML

Loans and Allowance for Loan Losses - Summary of Amounts Included in Nonaccrual Loans Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	$ 21,594	$ 22,603
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	769	838
Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	1,030	187
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	1,208	954
Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	5,729	5,488
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	5,132	5,682
Consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	422	437
Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	393	490
Acquired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans, Total	$ 6,911	$ 8,527

XML

Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 43,298	$ 38,271
Current Loans	4,999,204	4,937,705
Total Loans	5,042,502	4,975,976
Accruing Loans 90 Days or More Past Due	2,170	1,916
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	9,101	5,967
Current Loans	629,918	620,654
Total Loans	639,019	626,621
Accruing Loans 90 Days or More Past Due	117
Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,834	2,918
Current Loans	1,186,935	1,143,210
Total Loans	1,189,769	1,146,128
Accruing Loans 90 Days or More Past Due	121
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	4,809	3,794
Current Loans	328,857	324,908
Total Loans	333,666	328,702
Accruing Loans 90 Days or More Past Due	401	430
Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	8,568	4,819
Current Loans	832,865	822,685
Total Loans	841,433	827,504
Accruing Loans 90 Days or More Past Due	247	612
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	6,389	5,155
Current Loans	1,320,215	1,278,499
Total Loans	1,326,604	1,283,654
Accruing Loans 90 Days or More Past Due	453	282
Consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,357	3,115
Current Loans	324,649	323,747
Total Loans	327,006	326,862
Accruing Loans 90 Days or More Past Due	173	325
Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,733	658
Current Loans	140,687	141,251
Total Loans	142,420	141,909
Acquired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	7,507	11,845
Current Loans	235,078	282,751
Total Loans	242,585	294,596
Accruing Loans 90 Days or More Past Due	658	267
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	24,387	23,235
30 to 59 Days Past Due [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	8,948	5,114
30 to 59 Days Past Due [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,089	2,772
30 to 59 Days Past Due [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,374	2,448
30 to 59 Days Past Due [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,239	1,728
30 to 59 Days Past Due [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,226	3,620
30 to 59 Days Past Due [Member] | Consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,498	1,991
30 to 59 Days Past Due [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,485	322
30 to 59 Days Past Due [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,528	5,240
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	8,210	4,881
60 to 89 Days Past Due [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	30	810
60 to 89 Days Past Due [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	152	32
60 to 89 Days Past Due [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	634	653
60 to 89 Days Past Due [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	4,002	292
60 to 89 Days Past Due [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	999	702
60 to 89 Days Past Due [Member] | Consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	548	565
60 to 89 Days Past Due [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	156	158
60 to 89 Days Past Due [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,689	1,669
90 Days and Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	10,701	10,155
90 Days and Greater [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	123	43
90 Days and Greater [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	593	114
90 Days and Greater [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	801	693
90 Days and Greater [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,327	2,799
90 Days and Greater [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	2,164	833
90 Days and Greater [Member] | Consumer Non-real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	311	559
90 Days and Greater [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	92	178
90 Days and Greater [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 4,290	$ 4,936

XML

Loans and Allowance for Loan Losses - Impaired Loans Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 51,724	$ 50,032
Recorded Investment with Allowance	40,244	38,257
Related Allowance	4,084	3,861
Average Recorded Investment	40,398	47,117
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	7,730	7,126
Recorded Investment with Allowance	7,619	6,933
Related Allowance	228	202
Average Recorded Investment	7,362	7,739
Real Estate [Member] | Non-residential Real Estate Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,976	949
Recorded Investment with Allowance	1,722	757
Related Allowance	212	50
Average Recorded Investment	1,247	6,057
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,871	1,789
Recorded Investment with Allowance	1,619	1,545
Related Allowance	143	127
Average Recorded Investment	1,618	1,650
Real Estate [Member] | Residential Real Estate All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	7,153	7,177
Recorded Investment with Allowance	6,854	6,862
Related Allowance	2,478	2,433
Average Recorded Investment	7,024	7,154
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	18,769	18,507
Recorded Investment with Allowance	11,120	10,977
Related Allowance	857	881
Average Recorded Investment	10,976	12,140
Consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	767	928
Recorded Investment with Allowance	660	829
Related Allowance	133	131
Average Recorded Investment	724	846
Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	694	710
Recorded Investment with Allowance	422	490
Related Allowance	31	35
Average Recorded Investment	369	481
Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	12,764	12,846
Recorded Investment with Allowance	10,228	9,864
Related Allowance	2	2
Average Recorded Investment	$ 11,078	$ 11,050

XML

Loans and Allowance for Loan Losses - Internal Loan Grading by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 5,042,502	$ 4,975,976
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	639,019	626,621
Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,189,769	1,146,128
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	333,666	328,702
Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	841,433	827,504
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,326,604	1,283,654
Consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	327,006	326,862
Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	142,420	141,909
Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	242,585	294,596
Grade 1 [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,959,825	3,902,046
Grade 1 [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	459,381	451,059
Grade 1 [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	956,483	932,454
Grade 1 [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	283,951	279,870
Grade 1 [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	659,846	644,217
Grade 1 [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,033,690	1,000,089
Grade 1 [Member] | Consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	302,263	302,217
Grade 1 [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	136,737	136,132
Grade 1 [Member] | Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	127,474	156,008
Grade 2 [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	945,165	948,216
Grade 2 [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	153,357	157,715
Grade 2 [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	206,591	188,341
Grade 2 [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	41,010	39,806
Grade 2 [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	159,703	162,003
Grade 2 [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	264,192	264,134
Grade 2 [Member] | Consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	21,860	21,600
Grade 2 [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	4,317	5,542
Grade 2 [Member] | Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	94,135	109,075
Grade 3 [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	115,919	103,111
Grade 3 [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	25,456	16,949
Grade 3 [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	25,665	25,146
Grade 3 [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,080	7,401
Grade 3 [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	15,943	15,232
Grade 3 [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	24,726	15,128
Grade 3 [Member] | Consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,246	2,255
Grade 3 [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,348	116
Grade 3 [Member] | Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	13,455	20,884
Grade 4 [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	21,278	22,258
Grade 4 [Member] | Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	825	898
Grade 4 [Member] | Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,030	187
Grade 4 [Member] | Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,625	1,625
Grade 4 [Member] | Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	5,941	6,052
Grade 4 [Member] | Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,996	4,303
Grade 4 [Member] | Consumer Non-real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	637	790
Grade 4 [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	18	119
Grade 4 [Member] | Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,206	8,284
Grade 5 [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	315	345
Grade 5 [Member] | Acquired Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 315	$ 345

XML

Loans and Allowance for Loan Losses - Activity in ALL by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	$ 51,389	$ 51,666
Charge- offs	(343)	(599)
Recoveries	185	169
Net charge- offs	(158)	(430)
Provisions charged to operations	1,684	314
Balance at end of period	52,915	51,550
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	6,328	6,195
Charge- offs	(6)	(19)
Recoveries	1	1
Net charge- offs	(5)	(18)
Provisions charged to operations	332	473
Balance at end of period	6,655	6,650
Real Estate [Member] | Non-residential Real Estate Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	11,027	10,519
Charge- offs	(6)	(1)
Recoveries		39
Net charge- offs	(6)	38
Provisions charged to operations	341	(9)
Balance at end of period	11,362	10,548
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	3,261	3,226
Charge- offs	(63)	(56)
Recoveries	5	3
Net charge- offs	(58)	(53)
Provisions charged to operations	58	108
Balance at end of period	3,261	3,281
Real Estate [Member] | Residential Real Estate All Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	10,673	9,672
Charge- offs	(52)	(90)
Recoveries	2	3
Net charge- offs	(50)	(87)
Provisions charged to operations	423	246
Balance at end of period	11,046	9,831
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	13,151	15,334
Charge- offs	(70)	(156)
Recoveries	67	13
Net charge- offs	(3)	(143)
Provisions charged to operations	1,261	(406)
Balance at end of period	14,409	14,785
Consumer Non-real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	3,065	2,793
Charge- offs	(120)	(250)
Recoveries	71	80
Net charge- offs	(49)	(170)
Provisions charged to operations	56	76
Balance at end of period	3,072	2,699
Other Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	2,423	2,481
Recoveries	35	12
Net charge- offs	35	12
Provisions charged to operations	(50)	(157)
Balance at end of period	2,408	2,336
Acquired Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	1,461	1,446
Charge- offs	(26)	(27)
Recoveries	4	18
Net charge- offs	(22)	(9)
Provisions charged to operations	(737)	(17)
Balance at end of period	$ 702	$ 1,420

XML

Loans and Allowance for Loan Losses - Allowance for Loan Losses Outstanding by Impairment Methodology (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 9,628	$ 8,259
Collectively evaluated for impairment	43,287	43,130
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	986	669
Collectively evaluated for impairment	5,669	5,659
Real Estate [Member] | Non-residential Real Estate Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	1,024	1,119
Collectively evaluated for impairment	10,338	9,908
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	457	505
Collectively evaluated for impairment	2,804	2,756
Real Estate [Member] | Residential Real Estate All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,691	3,413
Collectively evaluated for impairment	7,355	7,260
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,069	2,114
Collectively evaluated for impairment	11,340	11,037
Consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	375	374
Collectively evaluated for impairment	2,697	2,691
Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	26	65
Collectively evaluated for impairment	2,382	2,358
Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	$ 702	$ 1,461

XML

Loans and Allowance for Loan Losses - Loans Outstanding by Impairment Methodology (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 129,244	$ 118,356
Collectively evaluated for impairment	4,906,338	4,850,240
Loans Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	6,920	7,380
Real Estate [Member] | Non-residential Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	26,281	17,846
Collectively evaluated for impairment	612,738	608,775
Real Estate [Member] | Non-residential Real Estate Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	26,695	25,333
Collectively evaluated for impairment	1,163,074	1,120,795
Real Estate [Member] | Residential Real Estate Permanent Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	8,705	9,026
Collectively evaluated for impairment	324,961	319,676
Real Estate [Member] | Residential Real Estate All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	21,883	21,285
Collectively evaluated for impairment	819,550	806,219
Commercial and Financial [Member] | Non-consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	28,722	19,432
Collectively evaluated for impairment	1,297,882	1,264,222
Consumer Non-real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	2,875	3,093
Collectively evaluated for impairment	324,131	323,769
Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	26	209
Collectively evaluated for impairment	142,394	141,700
Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	14,057	22,132
Collectively evaluated for impairment	221,608	265,084
Acquired Loans [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	$ 6,920	$ 7,380

XML

Loans and Allowance for Loan Losses - Transfers from Loans and Premises and Equipment to Other Real Estate Owned and Repossessed Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Noncash Investing And Financing Items [Abstract]
Other real estate owned	$ 591	$ 402
Repossessed assets	301	220
Total	$ 892	$ 622

XML

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 31,998	$ 32,003
Accumulated Amortization	(16,297)	(15,533)
Net Carrying Amount	15,701	16,470
Core Deposit Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,907	25,907
Accumulated Amortization	(11,785)	(11,113)
Net Carrying Amount	14,122	14,794
Customer Relationship Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,699	5,699
Accumulated Amortization	(4,202)	(4,115)
Net Carrying Amount	1,497	1,584
Mortgage Servicing Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	392	397
Accumulated Amortization	(310)	(305)
Net Carrying Amount	$ 82	$ 92

XML

Intangible Assets - Summary of Goodwill by Business Segment (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Goodwill [Line Items]
Balance at beginning and end of period	$ 79,749
Balance at beginning and end of period	79,749
Metropolitan Banks [Member]
Goodwill [Line Items]
Balance at beginning and end of period	13,767
Community Banks [Member]
Goodwill [Line Items]
Balance at beginning and end of period	59,894
Other Financial Services [Member]
Goodwill [Line Items]
Balance at beginning and end of period	5,464
Executive, Operations & Support [Member]
Goodwill [Line Items]
Balance at beginning and end of period	$ 624

XML

Leases - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Leases [Abstract]
Rent expense for operating leases	$ 357,000	$ 381,000
Right of use lease asset	$ 4,300,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	banf:AccruedInterestReceivableAndOtherAssetsMember
Operating lease liability	$ 4,300,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	banf:AccruedInterestPayableAndOtherLiabilitiesMember
Operating lease weighted-average remaining lease term	4 years 4 months 24 days
Operating lease weighted-average discount rate	3.60%
Operating lease revenue	$ 1,500,000

XML

Leases - Schedule of Maturity of Operating Lease Liabilities (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
2019 (nine months)	$ 97
2020	1,024
2021	150
2022	1,288
2023	955
Thereafter	737
Operating Lease Liability	$ 4,251

XML

Leases - Scheduled of Minimum Future Contractual Rent To be Received Under The Remaining Non-Cancelable Term of Operating Leases (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
2019 (nine months)	$ 3,126
2020	2,524
2021	1,624
2022	973
2023	509
Total Future Minimum Lease Payments	$ 8,756

XML

Stock-Based Compensation - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Deferred board fees percentage for stock units accumulation	100.00%
Nonqualified Incentive Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period in years	7 years
Nonqualified Incentive Stock Option Plan [Member] | Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares to be issued under incentive stock option plan	6,400,000
Shares for future grants	265,470
Stock option plan termination date	Dec. 31, 2019
Option exercisable rate	25.00%
Option exercisable period	4 years
Options expire period	15 years
Share based compensation options exercisable period	2026
Vesting period in years, start	4 years
Options vest and exercisable Description	The options vest and are exercisable beginning four years from the date of grant at the rate of 25% per year for four years. Options expire at the end of fifteen years from the date of grant
Nonqualified Incentive Stock Option Plan [Member] | Stock Option [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock price percentage to fair value at grant date	100.00%
Non-Employee Directors Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares to be issued under incentive stock option plan	520,000
Shares for future grants	40,000
Stock option plan termination date	Dec. 31, 2019
Option exercisable rate	25.00%
Option exercisable period	1 year
Options expire period	15 years
Share based compensation options exercisable period	2023
Options vest and exercisable Description	The options vest and are exercisable beginning one year from the date of grant at the rate of 25% per year for four years
Number of options granted for non-employee director	10,000
Vesting period in years	4 years
Non-Employee Directors Stock Option Plan [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock price percentage to fair value at grant date	100.00%
Banc First Deferred Stock Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option plan termination date	Dec. 31, 2019
Number of shares authorized for issuance under deferred compensation plan	222,220
Number of shares of common stock distributed	8,362	2,842

XML

Stock-Based Compensation - Summary of Activity Under Stock Option Plan (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at beginning period - Options | shares	1,216,700
Options granted | shares	40,000
Options exercised | shares	(5,500)
Options canceled, forfeited, or expired | shares	(22,500)
Outstanding at ending period - Options | shares	1,228,700
Exercisable at ending period - Options | shares	613,700
Outstanding at beginning period - Wgtd. Avg. Exercise Price | $ / shares	$ 28.48
Options granted - Wgtd. Avg. Exercise Price | $ / shares	55.38
Options exercised - Wgtd. Avg. Exercise Price | $ / shares	28.35
Options cancelled, forfeited, or expired - Wgtd. Avg. Exercise Price | $ / shares	51.83
Outstanding at ending period - Wgtd. Avg. Exercise Price | $ / shares	28.93
Exercisable at ending period - Wgtd. Avg. Exercise Price | $ / shares	$ 21.78
Outstanding at ending period - Wgtd. Avg. Remaining Contractual Term, years	9 years 4 months 20 days
Exercisable at ending period - Wgtd. Avg. Remaining Contractual Term, years	6 years 11 months 23 days
Outstanding at ending period - Aggregate Intrinsic Value | $	$ 28,536
Exercisable at ending period - Aggregate Intrinsic Value | $	$ 18,639

XML

Stock-Based Compensation - Options Exercised Under Stock Option Plan (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Total intrinsic value of options exercised	$ 145	$ 2,860
Cash received from options exercised	156	1,233
Tax benefit realized from options exercised	$ 37	$ 729

XML

Stock-Based Compensation - Stock-Based Employee Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Labor And Related Expense [Abstract]
Stock-based compensation expense	$ 174	$ 306
Tax benefit	44	78
Stock-based compensation expense, net of tax	$ 130	$ 228

XML

Stock-Based Compensation - Unearned Stock-based Compensation Expense (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Share Based Compensation [Abstract]
Unearned stock-based compensation expense	$ 3,437

XML

Stock-Based Compensation - Assumptions Used for Computing Stock-Based Compensation Expense (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract]
Weighted average grant-date fair value per share of options granted	$ 13.67	$ 13.98
Risk-free interest rate, minimum	2.62%	2.55%
Risk-free interest rate, maximum	2.76%	2.92%
Dividend yield	2.00%	2.00%
Stock price volatility, minimum	22.93%	23.05%
Stock price volatility, maximum	22.96%	23.18%
Expected term	10 years	10 years

XML

Stock - Based Compensation - Summary of Accumulated Stock Units (Detail) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Accumulated stock units	137,543	143,347
Average price	$ 25.70	$ 24.91

XML

Stockholders' Equity - Summary of Shares Repurchased Under Stock Purchase Program (Detail) - shares	Mar. 31, 2019	Mar. 31, 2018
Summary Of Shares Repurchased Under Stock Purchase Program [Abstract]
Shares remaining to be repurchased	148,736	300,000

XML

Stockholders' Equity - Required Capital Amounts and Company's Respective Ratios (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 911,073
Total Capital To Risk Weighted Assets Actual Ratio	16.32%
Capital Required For Capital Adequacy Amount	$ 446,687
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	8.00%
Capital With Capital Conservation Buffer Amount	$ 586,277
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	10.50%
Common Equity Tier 1 Risk Based Capital Amount	$ 832,158
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	14.90%
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 251,262
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	4.50%
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 390,852
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	7.00%
Tier 1 Risk Based Capital Amount	$ 858,158
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	15.37%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 335,016
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	6.00%
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 474,605
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	8.50%
Tier 1 Capital Amount	$ 858,158
Tier 1 Capital To Average Assets Ratio	11.38%
Tier 1 Capital Required For Capital Adequacy Amount	$ 301,620
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio	4.00%
BancFirst [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 788,443
Total Capital To Risk Weighted Assets Actual Ratio	14.14%
Capital Required For Capital Adequacy Amount	$ 445,937
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	8.00%
Capital With Capital Conservation Buffer Amount	$ 585,292
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	10.50%
Capital Required To Be Well Capitalized Amount	$ 557,421
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	10.00%
Common Equity Tier 1 Risk Based Capital Amount	$ 715,528
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	12.84%
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 250,839
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	4.50%
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 390,194
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	7.00%
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 362,323
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	6.50%
Tier 1 Risk Based Capital Amount	$ 735,528
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	13.20%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 334,452
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	6.00%
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 473,808
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	8.50%
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 445,937
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	8.00%
Tier 1 Capital Amount	$ 735,528
Tier 1 Capital To Average Assets Ratio	9.77%
Tier 1 Capital Required For Capital Adequacy Amount	$ 301,212
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio	4.00%
Tier 1 Capital Required To Be Well Capitalized Amount	$ 376,514
Tier 1 Capital Required To Be Well Capitalized To Average Assets Ratio	5.00%

XML

Stockholders' Equity - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019 USD ($)
2016 [Member]
Stockholders Equity [Line Items]
Implementation of the capital conservation buffer, Percentage	0.625%
Capital conservation buffer implementation phase-in period	4 years
2019 [Member]
Stockholders Equity [Line Items]
Capital Conservation Buffer Maximum Level	2.50%
Maximum [Member]
Stockholders Equity [Line Items]
Quantitative limit for trust preferred securities to be included in tier 1 capital	$ 15,000,000,000

XML

Net Income Per Common Share - Basic and Diluted Net Income Per Common Share Based on Weighted-average Shares Outstanding (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share Reconciliation [Abstract]
Income available to common stockholders	$ 31,837	$ 29,620
Income available to common stockholders plus assumed exercises of stock options	$ 31,837	$ 29,620
Income available to common stockholders - Shares	32,612,399	32,574,251
Dilutive effect of stock options - Shares	680,453	743,493
Income available to common stockholders plus assumed exercises of stock options - Shares	33,292,852	33,317,744
Income available to common stockholders - Per Share Amount	$ 0.98	$ 0.91
Income available to common stockholders plus assumed exercises of stock options - Per Share Amount	$ 0.96	$ 0.89

XML

Net Income Per Common Share - Options Excluded From Computation of Diluted Net Income Per Common Share (Detail) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Abstract]
Shares	180,000	113,278

XML

Fair Value Measurements - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 723,655	$ 770,704
Derivative assets	51	252
Derivative liabilities	49	238
U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	652,750	697,466
U.S. Federal Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	27,954	29,919
Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	15,712	15,908
States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	27,239	27,411
Level 1 Inputs [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	652,750	697,466
Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	51	252
Derivative liabilities	49	238
Level 2 Inputs [Member] | U.S. Federal Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	27,954	29,919
Level 2 Inputs [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,311	2,465
Level 2 Inputs [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	27,239	27,411
Level 3 Inputs [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 13,401	$ 13,443

XML

Fair Value Measurements - Changes in Level 3 Assets Measured at Estimated Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward
Balance at the beginning of the year	$ 13,443	$ 14,467
Settlements	(39)	(1,037)
Total unrealized (losses) gains	(3)	13
Balance at the end of the period	$ 13,401	$ 13,443

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Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Debt Instrument Fair Value Disclosure [Abstract]
Transfer of securities between levels of fair value hierarchy	$ 0	$ 0
Days from origination after which mortgage loans are sold	30 days
Amount of non-financial assets (liabilities) measured at fair value on a recurring basis	$ 0		$ 0
Non-financial assets or liabilities for which no impairment was provided	$ 0		$ 0

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Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Level 3 [Member] - Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Equity Securities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	$ 9,239	$ 7,521
Impaired Loans (Less Specific Allowance) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	36,160	34,396
Repossessed Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	184	183
Other Real Estate Owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	$ 560	$ 4,683

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Fair Value Measurements - Estimated Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
FINANCIAL ASSETS
Securities held for investment, Carrying Amount	$ 1,217	$ 1,428
Loans, net of allowance for loan losses, Carrying Amount	4,989,587	4,924,587
Securities held for investment, Fair Value	1,223	1,433
Loans held for sale, Fair Value	7,719	8,174
FINANCIAL LIABILITIES
Deposits, Carrying Amount	6,706,386	6,605,495
Short-term borrowings, Carrying Amount	5,200	1,675
Junior subordinated debentures, Carrying Amount	26,804	26,804
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments, Fair Value	2,219	2,158
Letters of credit, Fair Value	410	421
Level 2 Inputs [Member]
FINANCIAL ASSETS
Cash and cash equivalents, Carrying Amount	1,477,405	1,424,255
Securities held for investment, Carrying Amount	717	928
Loans held for sale, Carrying Amount	7,719	8,174
Cash and cash equivalents, Fair Value	1,477,405	1,424,255
Securities held for investment, Fair Value	723	933
Loans held for sale, Fair Value	7,719	8,174
FINANCIAL LIABILITIES
Deposits, Carrying Amount	6,706,386	6,605,495
Short-term borrowings, Carrying Amount	5,200	1,675
Junior subordinated debentures, Carrying Amount	26,804	26,804
Deposits, Fair Value	6,816,792	6,713,542
Short-term borrowings, Fair Value	5,200	1,675
Junior subordinated debentures, Fair Value	29,131	29,549
Level 3 Inputs [Member]
FINANCIAL ASSETS
Securities held for investment, Carrying Amount	500	500
Loans, net of allowance for loan losses, Carrying Amount	4,989,587	4,924,587
Securities held for investment, Fair Value	500	500
Loans, net of allowance for loan losses, Fair Value	$ 4,988,322	$ 4,901,159

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Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019 Business_Unit
Segment Reporting [Abstract]
Number of principal business units	4

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Segment Information - Results of Operations and Selected Financial Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net interest income (expense)	$ 66,903	$ 63,035
Noninterest income	32,001	30,110
Income before taxes	41,014	36,941
Total Assets	7,709,000		$ 7,574,258
Operating Segments [Member] | Metropolitan Banks [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	21,353	20,304
Noninterest income	4,209	3,941
Income before taxes	15,369	14,736
Total Assets	2,763,523		2,743,876
Operating Segments [Member] | Community Banks [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	43,407	41,382
Noninterest income	14,885	13,953
Income before taxes	28,045	26,348
Total Assets	4,995,379		4,892,946
Operating Segments [Member] | Other Financial Services [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	1,171	1,475
Noninterest income	9,873	9,624
Income before taxes	4,499	5,043
Total Assets	69,430		84,706
Operating Segments [Member] | Executive, Operations & Support [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	972	(126)
Noninterest income	35,521	32,194
Income before taxes	25,023	19,915
Total Assets	912,166		861,782
Eliminations [Member]
Segment Reporting Information [Line Items]
Noninterest income	(32,487)	(29,602)
Income before taxes	(31,922)	$ (29,101)
Total Assets	$ (1,031,498)		$ (1,009,052)

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Subsequent Event - Additional Information (Detail) - Pegasus Bank [Member] - USD ($) $ in Millions	Apr. 23, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Total assets acquired		$ 639.1
Loans		367.4
Deposits		$ 595.3
Subsequent Event [Member]
Subsequent Event [Line Items]
Business acquisition, date of agreement	Apr. 23, 2019
Contract price	$ 122.0