10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended September 30, 2013

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)

N/A

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

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  x    No  ¨.

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files).    Yes  x    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	x
Non-accelerated filer	¨ (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of October 31, 2013 there were 15,303,372 shares of the registrant’s Common Stock outstanding.

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

BANCFIRST CORPORATION

CONSOLIDATED BALANCE SHEETS

(Dollars in thousands)

	September 30, 2013			December 31, 2012			September 30, 2012
	(unaudited)			(see Note 1)			(unaudited)
ASSETS
Cash and due from banks	$	204,317		$	213,103		$	139,004
Interest-bearing deposits with banks		1,622,619			1,732,045			1,773,610
Federal funds sold		—			700			—
Securities (fair value: $474,755, $562,815, and $540,786, respectively)		474,640			562,542			540,475
Loans:
Total loans (net of unearned interest)		3,358,938			3,242,427			3,116,096
Allowance for loan losses		(38,859	)		(38,725	)		(37,258	)
Loans, net		3,320,079			3,203,702			3,078,838
Premises and equipment, net		118,176			115,503			113,812
Other real estate owned		8,121			9,227			9,559
Intangible assets, net		10,633			12,083			12,630
Goodwill		44,545			44,545			44,545
Accrued interest receivable and other assets		123,600			128,800			124,278
Total assets	$	5,926,730		$	6,022,250		$	5,836,751
LIABILITIES AND STOCKHOLDERS’ EQUITY
Deposits:
Noninterest-bearing	$	2,022,388		$	2,016,832		$	1,927,387
Interest-bearing		3,287,076			3,423,998			3,326,118
Total deposits		5,309,464			5,440,830			5,253,505
Short-term borrowings		5,074			4,571			5,665
Long-term borrowings		8,938			9,178			11,255
Accrued interest payable and other liabilities		30,477			21,300			29,135
Junior subordinated debentures		26,804			26,804			26,804
Total liabilities		5,380,757			5,502,683			5,326,364
Commitments and contingent liabilities
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, 20,000,000 shares authorized; shares issued and outstanding: 15,298,035, 15,242,308 and 15,200,468, respectively		15,298			15,242			15,200
Capital surplus		86,967			82,401			80,750
Retained earnings		439,840			415,607			407,732
Accumulated other comprehensive income, net of income tax of $2,083, $3,400 and $3,609, respectively		3,868			6,317			6,705
Total stockholders’ equity		545,973			519,567			510,387
Total liabilities and stockholders’ equity	$	5,926,730		$	6,022,250		$	5,836,751

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

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BANCFIRST CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(Dollars in thousands, except per share data)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2013			2012			2013			2012
INTEREST INCOME
Loans, including fees	$	41,694		$	42,026		$	124,361		$	125,843
Securities:
Taxable		1,097			1,681			3,745			6,175
Tax-exempt		284			366			944			1,201
Federal funds sold		—			—			2			1
Interest-bearing deposits with banks		1,031			1,071			2,978			3,105
Total interest income		44,106			45,144			132,030			136,325
INTEREST EXPENSE
Deposits		2,849			3,729			8,778			11,861
Short-term borrowings		1			7			4			23
Long-term borrowings		52			84			176			280
Junior subordinated debentures		492			492			1,474			1,643
Total interest expense		3,394			4,312			10,432			13,807
Net interest income		40,712			40,832			121,598			122,518
Provision for loan losses		(12	)		233			804			654
Net interest income after provision for loan losses		40,724			40,599			120,794			121,864
NONINTEREST INCOME
Trust revenue		2,122			1,927			6,043			5,457
Service charges on deposits		13,575			11,896			38,835			33,534
Securities transactions		90			385			341			4,643
Income from sales of loans		560			737			1,939			2,075
Insurance commissions		3,892			3,661			10,982			9,457
Cash management		1,620			1,971			4,669			5,951
Gain on sale of other assets		49			26			300			369
Other		1,744			1,513			4,811			4,431
Total noninterest income		23,652			22,116			67,920			65,917
NONINTEREST EXPENSE
Salaries and employee benefits		26,094			24,641			76,388			74,271
Occupancy and fixed assets expense, net		2,768			2,877			7,849			7,800
Depreciation		2,307			2,253			6,973			6,610
Amortization of intangible assets		424			457			1,291			1,371
Data processing services		1,173			1,208			3,587			3,649
Net expense from other real estate owned		105			200			870			1,369
Marketing and business promotion		1,668			1,998			4,631			5,332
Deposit insurance		750			745			2,235			2,188
Other		8,032			8,086			23,896			24,475
Total noninterest expense		43,321			42,465			127,720			127,065
Income before taxes		21,055			20,250			60,994			60,716
Income tax expense		6,564			6,390			20,538			21,122
Net income	$	14,491		$	13,860		$	40,456		$	39,594
NET INCOME PER COMMON SHARE
Basic	$	0.94		$	0.91		$	2.65		$	2.61
Diluted	$	0.93		$	0.90		$	2.61		$	2.57
OTHER COMPREHENSIVE INCOME
Unrealized losses on securities, net of tax of $186, $44, $1,269 and $654, respectively	$	(346	)	$	(82	)	$	(2,360	)	$	(1,214	)
Reclassification adjustment for gains included in net income, net of tax of $6, $93, $48 and $821, respectively		(11	)		(172	)		(89	)		(1,525	)
Other comprehensive loss, net of tax of $192, $137, $1,317 and $1,475, respectively		(357	)		(254	)		(2,449	)		(2,739	)
Comprehensive income	$	14,134		$	13,606		$	38,007		$	36,855

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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
COMMON STOCK
Issued at beginning of period	$	15,256		$	15,154		$	15,242		$	15,118
Shares issued		63			46			122			89
Shares acquired and canceled		(21	)		—			(66	)		(7	)
Issued at end of period	$	15,298		$	15,200		$	15,298		$	15,200
CAPITAL SURPLUS
Balance at beginning of period	$	84,360		$	79,181		$	82,401		$	77,462
Common stock issued		1,717			748			2,745			1,470
Tax effect of stock options		491			430			727			629
Stock-based compensation arrangements		399			391			1,094			1,189
Balance at end of period	$	86,967		$	80,750		$	86,967		$	80,750
RETAINED EARNINGS
Balance at beginning of period	$	431,120		$	398,267		$	415,607		$	381,017
Net income		14,491			13,860			40,456			39,594
Dividends on common stock		(4,746	)		(4,395	)		(13,579	)		(12,630	)
Common stock acquired and canceled		(1,025	)		—			(2,644	)		(249	)
Balance at end of period	$	439,840		$	407,732		$	439,840		$	407,732
ACCUMULATED OTHER COMPREHENSIVE INCOME
Unrealized gains (losses) on securities:
Balance at beginning of period	$	4,225		$	6,959		$	6,317		$	9,444
Net change		(357	)		(254	)		(2,449	)		(2,739	)
Balance at end of period	$	3,868		$	6,705		$	3,868		$	6,705
Total stockholders’ equity	$	545,973		$	510,387		$	545,973		$	510,387

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

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BANCFIRST CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOW

(Unaudited)

(Dollars in thousands)

	Nine Months Ended
	September 30,
	2013			2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	40,456		$	39,594
Adjustments to reconcile to net cash provided by operating activities:
Provision for loan losses		804			654
Depreciation and amortization		8,264			7,981
Net amortization of securities premiums and discounts		1,278			1,093
Realized securities gains		(341	)		(4,643	)
Gain on sales of loans		(1,939	)		(2,075	)
Cash receipts from the sale of loans originated for sale		165,988			169,065
Cash disbursements for loans originated for sale		(157,149	)		(170,446	)
Deferred income tax provision		1,789			426
Gain on other assets		(236	)		(323	)
Decrease in interest receivable		1,175			1,996
Decrease in interest payable		(324	)		(559	)
Amortization of stock-based compensation arrangements		1,094			1,189
Other, net		9,641			3,936
Net cash provided by operating activities		70,500			47,888
INVESTING ACTIVITIES
Net decrease in Federal funds sold		700			400
Purchases of held for investment securities		(902	)		(2,525	)
Purchases of available for sale securities		(78,042	)		(58,240	)
Proceeds from maturities, calls and paydowns of held for investment securities		5,590			8,262
Proceeds from maturities, calls and paydowns of available for sale securities		156,212			121,206
Proceeds from sales of available for sale securities		341			5,094
Purchases of loans		(40,847	)		(22,215	)
Proceeds from sales of loans		87,764			32,569
Net other increase in loans		(173,231	)		(112,844	)
Purchases of premises, equipment and computer software		(10,753	)		(9,290	)
Proceeds from the sale of other assets		3,515			8,245
Net cash used in investing activities		(49,653	)		(29,338	)
FINANCING ACTIVITIES
Net (decrease) increase in demand, transaction and savings deposits		(70,008	)		274,556
Net decrease in time deposits		(61,358	)		(58,786	)
Net increase (decrease) in short-term borrowings		503			(2,609	)
Paydown of long-term borrowings		(240	)		(7,221	)
Redemption of junior subordinated debentures		—			(9,279	)
Issuance of common stock		3,594			2,188
Common stock acquired		(2,710	)		(256	)
Cash dividends paid		(8,840	)		(12,262	)
Net cash (used in) provided by financing activities		(139,059	)		186,331
Net (decrease) increase in cash, due from banks and interest-bearing deposits		(118,212	)		204,881
Cash, due from banks and interest-bearing deposits at the beginning of the period		1,945,148			1,707,733
Cash, due from banks and interest-bearing deposits at the end of the period	$	1,826,936		$	1,912,614
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	$	10,756		$	14,366
Cash paid during the period for income taxes	$	18,646		$	21,475
Noncash investing and financing activities:
Unpaid common stock dividends declared	$	4,739		$	4,397

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 State of America 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, 2012.

Basis of Presentation

The accompanying unaudited interim consolidated financial statements include the accounts of BancFirst Corporation, Council Oak Partners, LLC, BancFirst Insurance Services, Inc., and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BancFirst Agency, Inc. and BancFirst Community Development Corporation. 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, 2012, should be referred to in connection with these unaudited interim consolidated financial statements.

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, 2012, the date of the most recent annual report.

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.

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.

Recent Accounting Pronouncements

In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220).” ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2012. Adoption of ASU 2013-02 did not have a significant effect on the Company’s financial statements.

In July 2012, the FASB issued ASU No. 2012-02, “Intangibles (Topic 350)—Goodwill and Other.” ASU 2012-02 simplifies the impairment test for indefinite-lived intangible assets other than goodwill. The new guidance gives the option to first assess qualitative factors to determine if it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to

6

perform a quantitative valuation test. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after September 15, 2012. Adoption of ASU 2012-02 did not have a significant effect on the Company’s financial statements.

In November 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210)—Disclosure about Offsetting Assets and Liabilities.” ASU 2011-11 is an amendment to require an entity to disclose both net and gross information about offsetting assets and liabilities to enable users of its financial statements to understand the effect of those arrangements. Arrangements include derivatives, sale and repurchase agreements and transactions, securities borrowing and securities lending arrangements. ASU 2011-11 was effective for annual and interim periods beginning on January 1, 2013 and did not have a significant effect on the Company’s financial statements.

(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

On January 19, 2012, Council Oak Investment Corporation, a wholly-owned subsidiary of BancFirst, completed the sale of one of its investments that resulted in a pretax gain of approximately $4.5 million. After related expenses and income taxes, the increase in net income approximated $2.6 million. The gain was included in first quarter 2012 earnings.

(3) SECURITIES

The following table summarizes securities held for investment and securities available for sale:

	September 30, 2013
	(Dollars in thousands)
Held for investment, at cost (fair value: $12,328)	$	12,213
Available for sale, at fair value		462,427
Total	$	474,640

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
Mortgage backed securities (1)	$	649	$	52	$	—		$	701
States and political subdivisions		11,564		71		(8	)		11,627
Total	$	12,213	$	123	$	(8	)	$	12,328

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
U.S. treasury and other Federal agencies	$	359,076	$	2,043	$	(215	)	$	360,904
Mortgage backed securities (1)		33,336		620		—			33,956
States and political subdivisions		52,013		1,436		(63	)		53,386
Other securities (2)		12,051		2,270		(140	)		14,181
Total	$	456,476	$	6,369	$	(418	)	$	462,427

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

(2) Primarily consists of equity securities.

7

The maturities of 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.

	September 30, 2013
	Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	3,636	$	3,655
After one year but within five years		7,364		7,399
After five years but within ten years		945		976
After ten years		268		298
Total	$	12,213	$	12,328
Available for Sale
Contractual maturity of debt securities:
Within one year	$	197,037	$	197,424
After one year but within five years		119,341		120,593
After five years but within ten years		31,322		32,035
After ten years		100,124		101,615
Total debt securities		447,824		451,667
Equity securities		8,652		10,760
Total	$	456,476	$	462,427

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:

	September 30, 2013
	(Dollars in thousands)
Book value of pledged securities	$	393,329

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(4) LOANS AND ALLOWANCE FOR LOAN LOSSES

The following is a schedule of loans outstanding by category:

	September 30, 2013					December 31, 2012					September 30, 2012
	Amount		Percent			Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and industrial	$	566,670		16.87	%	$	559,274		17.25	%	$	541,130		17.37	%
Oil & gas production & equipment		139,605		4.16			154,380		4.76			131,642		4.22
Agriculture		89,258		2.66			93,274		2.88			83,146		2.67
State and political subdivisions:
Taxable		10,248		0.31			9,412		0.29			7,786		0.25
Tax-exempt		12,232		0.36			13,194		0.41			13,749		0.44
Real estate:
Construction		283,468		8.44			226,102		6.97			211,505		6.79
Farmland		133,397		3.97			125,033		3.86			114,043		3.66
One to four family residences		696,651		20.74			669,230		20.64			674,457		21.64
Multifamily residential properties		57,825		1.72			50,721		1.56			50,659		1.63
Commercial		1,100,544		32.76			1,068,445		32.95			1,026,097		32.93
Consumer		248,025		7.38			253,002		7.80			241,864		7.76
Other (not classified above)		21,015		0.63			20,360		0.63			20,018		0.64
Total loans	$	3,358,938		100.00	%	$	3,242,427		100.00	%	$	3,116,096		100.00	%
Loans held for sale (included above)	$	4,934				$	11,257				$	13,384

The Company’s loans are mostly to customers within Oklahoma and over 60% of the loans are secured by real estate. Credit risk on loans is managed through limits on amounts loaned to individual 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.

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, 2012.

Nonperforming and Restructured Assets

Nonaccrual loans, accruing loans past due 90 days or more, and restructured loans are shown in the table below. Had nonaccrual loans performed in accordance with their original contractual terms, the Company would have recognized additional interest income of approximately $1.3 million for the nine months ended September 30, 2013 and approximately $1.0 million for the nine months ended September 30, 2012.

At September 30, 2013 and 2012, restructured loans consisted primarily of one loan restructured to defer principal payments. The loan was evaluated by management and determined to be well collateralized. Additionally, none of the concessions granted involved a principal reduction or a change from the current market rate of interest. The collateral value will be monitored periodically to evaluate possible impairment. 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 restructured were not considered to be material.

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The following is a summary of nonperforming and restructured assets:

	September 30,			December 31,			September 30,
	2013			2012			2012
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	1,266		$	537		$	731
Nonaccrual		15,094			20,549			22,101
Restructured		18,028			17,866			17,784
Total nonperforming and restructured loans		34,388			38,952			40,616
Other real estate owned and repossessed assets		8,428			9,566			9,796
Total nonperforming and restructured assets	$	42,816		$	48,518		$	50,412
Nonperforming and restructured loans to total loans		1.02	%		1.20	%		1.30	%
Nonperforming and restructured assets to total assets		0.72	%		0.81	%		0.86	%

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.

	September 30, 2013		September 30, 2012
	(Dollars in thousands)
Non-residential real estate owner occupied	$	551	$	5,605
Non-residential real estate other		6,784		3,719
Residential real estate permanent mortgage		714		585
Residential real estate all other		1,865		3,594
Non-consumer non-real estate		1,280		2,527
Consumer non-real estate		124		138
Other loans		1,446		2,221
Acquired loans		2,330		3,712
Total	$	15,094	$	22,101

The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-89 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 September 30, 2013
Non-residential real estate owner occupied	$	779	$	326	$	1,105	$	458,241	$	459,346	$	308
Non-residential real estate other		6,046		1,925		7,971		869,531		877,502		51
Residential real estate permanent mortgage		2,017		492		2,509		253,708		256,217		217
Residential real estate all other		1,900		1,401		3,301		547,849		551,150		32
Non-consumer non-real estate		889		1,013		1,902		776,576		778,478		138
Consumer non-real estate		2,179		194		2,373		222,122		224,495		187
Other loans		1,531		1,275		2,806		136,060		138,866		236
Acquired loans		1,194		473		1,667		71,217		72,884		97
Total	$	16,535	$	7,099	$	23,634	$	3,335,304	$	3,358,938	$	1,266

10

As of September 30, 2012
Non-residential real estate owner occupied	$	915	$	466	$	1,381	$	480,319	$	481,700	$	349
Non-residential real estate other		646		1,959		2,605		665,265		667,870		—
Residential real estate permanent mortgage		2,058		399		2,457		242,209		244,666		12
Residential real estate all other		1,635		771		2,406		490,726		493,132		86
Non-consumer non-real estate		4,233		135		4,368		729,538		733,906		7
Consumer non-real estate		2,050		230		2,280		205,463		207,743		170
Other loans		1,706		1,447		3,153		147,329		150,482		43
Acquired loans		1,219		1,061		2,280		134,317		136,597		64
Total	$	14,462	$	6,468	$	20,930	$	3,095,166	$	3,116,096	$	731

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. 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 September 30, 2013
Non-residential real estate owner occupied	$	993	$	924	$	34	$	700
Non-residential real estate other		25,724		24,216		2,240		25,871
Residential real estate permanent mortgage		1,263		1,068		57		1,298
Residential real estate all other		2,423		2,020		381		3,668
Non-consumer non-real estate		1,931		1,599		396		1,508
Consumer non-real estate		413		394		67		444
Other loans		1,905		1,782		300		1,911
Acquired loans		9,879		7,853		95		8,109
Total	$	44,531	$	39,856	$	3,570	$	43,509
As of September 30, 2012
Non-residential real estate owner occupied	$	7,058	$	6,094	$	232	$	6,237
Non-residential real estate other		20,535		20,340		1,581		20,496
Residential real estate permanent mortgage		1,299		1,089		30		1,184
Residential real estate all other		4,365		4,047		1,344		4,149
Non-consumer non-real estate		3,144		2,539		677		1,745
Consumer non-real estate		447		424		77		364
Other loans		2,420		2,265		264		1,975
Acquired loans		12,872		10,684		71		11,451
Total	$	52,140	$	47,482	$	4,276	$	47,601

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.

11

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, 2012.

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 September 30, 2013
Non-residential real estate owner occupied	$	388,923	$	64,418	$	5,189	$	816	$	—	$	459,346
Non-residential real estate other		714,670		134,760		21,237		6,835		—		877,502
Residential real estate permanent mortgage		224,518		25,091		5,574		1,034		—		256,217
Residential real estate all other		457,649		82,827		8,721		1,953		—		551,150
Non-consumer non-real estate		681,695		91,108		4,254		1,421		—		778,478
Consumer non-real estate		210,285		11,760		2,047		403		—		224,495
Other loans		135,169		2,646		738		313		—		138,866
Acquired loans		53,364		12,707		4,207		2,606		—		72,884
Total	$	2,866,273	$	425,317	$	51,967	$	15,381	$	—	$	3,358,938
As of September 30, 2012
Non-residential real estate owner occupied	$	420,426	$	49,131	$	6,189	$	5,954	$	—	$	481,700
Non-residential real estate other		564,180		78,637		21,334		3,719		—		667,870
Residential real estate permanent mortgage		206,702		31,558		5,547		859		—		244,666
Residential real estate all other		429,862		50,412		9,120		3,738		—		493,132
Non-consumer non-real estate		644,066		80,863		6,500		2,477		—		733,906
Consumer non-real estate		195,242		10,185		1,965		349		2		207,743
Other loans		146,037		2,726		887		832		—		150,482
Acquired loans		103,411		24,243		5,006		3,898		39		136,597
Total	$	2,709,926	$	327,755	$	56,548	$	21,826	$	41	$	3,116,096

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, 2012.

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 class of loans does not preclude its availability to absorb losses in other classes.

	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 September 30, 2013
Non-residential real estate owner occupied	$	4,714	$	(1	)	$	—	$	(1	)	$	144		$	4,857
Non-residential real estate other		10,866		—			2		2			404			11,272
Residential real estate permanent mortgage		2,733		(30	)		12		(18	)		7			2,722
Residential real estate all other		7,349		(23	)		3		(20	)		(722	)		6,607

12

Non-consumer non-real estate		8,751		(34	)		110		76			36			8,863
Consumer non-real estate		2,389		(163	)		65		(98	)		207			2,498
Other loans		1,961		(76	)		24		(52	)		36			1,945
Acquired loans		219		(3	)		3		—			(124	)		95
Total	$	38,982	$	(330	)	$	219	$	(111	)	$	(12	)	$	38,859
Nine Months Ended September 30, 2013
Non-residential real estate owner occupied	$	5,104	$	(3	)	$	16	$	13		$	(260	)	$	4,857
Non-residential real estate other		9,865		(19	)		12		(7	)		1,414			11,272
Residential real estate permanent mortgage		2,781		(126	)		27		(99	)		40			2,722
Residential real estate all other		7,034		(177	)		30		(147	)		(280	)		6,607
Non-consumer non-real estate		9,385		(139	)		159		20			(542	)		8,863
Consumer non-real estate		2,451		(458	)		202		(256	)		303			2,498
Other loans		1,885		(235	)		55		(180	)		240			1,945
Acquired loans		220		(53	)		39		(14	)		(111	)		95
Total	$	38,725	$	(1,210	)	$	540	$	(670	)	$	804		$	38,859

	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 September 30, 2012
Non-residential real estate owner occupied	$	5,783	$	(30	)	$	2	$	(28	)	$	(469	)	$	5,286
Non-residential real estate other		8,566		—			15		15			16			8,597
Residential real estate permanent mortgage		3,002		(50	)		4		(46	)		(258	)		2,698
Residential real estate all other		7,004		(107	)		5		(102	)		121			7,023
Non-consumer non-real estate		8,558		(119	)		19		(100	)		712			9,170
Consumer non-real estate		2,282		(117	)		42		(75	)		162			2,369
Other loans		1,854		(24	)		2		(22	)		6			1,838
Acquired loans		387		(53	)		—		(53	)		(57	)		277
Total	$	37,436	$	(500	)	$	89	$	(411	)	$	233		$	37,258
Nine Months Ended September 30, 2012
Non-residential real estate owner occupied	$	5,300	$	(87	)	$	2	$	(85	)	$	71		$	5,286
Non-residential real estate other		8,648		(71	)		46		(25	)		(26	)		8,597
Residential real estate permanent mortgage		2,734		(119	)		84		(35	)		(1	)		2,698
Residential real estate all other		7,030		(169	)		34		(135	)		128			7,023
Non-consumer non-real estate		9,156		(449	)		144		(305	)		319			9,170
Consumer non-real estate		2,315		(308	)		157		(151	)		205			2,369
Other loans		1,886		(231	)		33		(198	)		150			1,838
Acquired loans		587		(129	)		11		(118	)		(192	)		277
Total	$	37,656	$	(1,563	)	$	511	$	(1,052	)	$	654		$	37,258

13

The following table details the amount of ALL by class of loans based on the impairment methodology used by the Company.

	ALL
	September 30, 2013				September 30, 2012
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Non-residential real estate owner occupied	$	228	$	4,629	$	462	$	4,824
Non-residential real estate other		2,529		8,743		1,934		6,663
Residential real estate permanent mortgage		226		2,496		218		2,480
Residential real estate all other		1,058		5,549		2,087		4,936
Non-consumer non-real estate		1,052		7,811		1,692		7,478
Consumer non-real estate		314		2,184		315		2,054
Other loans		2460		1,6998		220		1,6188
Acquired loans		—		957		—		2777
Total	$	5,653	$	33,206	$	6,928	$	30,330

The following table details the loans outstanding by class of loans based on the impairment methodology used by the Company.

	Loans
	September 30, 2013						September 30, 2012
	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)
Non-residential real estate owner occupied	$	6,005	$	453,341	$	—	$	12,142	$	469,558	$	—
Non-residential real estate other		28,072		849,430		—		25,053		642,817		—
Residential real estate permanent mortgage		6,609		249,609		—		6,406		238,260		—
Residential real estate all other		10,674		540,476		—		12,858		480,274		—
Non-consumer non-real estate		5,675		772,803		—		8,976		724,930		—
Consumer non-real estate		2,448		222,045		—		2,316		205,427		—
Other loans		292		138,575		—		264		150,218		—
Acquired loans		—		66,071		6,813		—		127,654		8,943
Total	$	59,775	$	3,292,350	$	6,813	$	68,015	$	3,039,138	$	8,943

Transfers from Loans

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

	Nine Months Ended September 30,
	2013		2012
	(Dollars in thousands)
Other real estate owned	$	1,287	$	1,633
Repossessed assets		946		664
Total	$	2,233	$	2,297

14

(5) INTANGIBLE ASSETS

The following is a summary of intangible assets:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
As of September 30, 2013
Core deposit intangibles	$	13,473	$	(6,845	)	$	6,628
Customer relationship intangibles		5,657		(2,247	)		3,410
Mortgage servicing intangibles		734		(139	)		595
Total	$	19,864	$	(9,231	)	$	10,633

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, 2012.

(6) STOCK-BASED COMPENSATION

The Company adopted a nonqualified incentive stock option plan (the “BancFirst ISOP”) in May 1986. The Company amended the BancFirst ISOP to increase the number of shares to be issued under the plan to 3,000,000 shares in May 2013. At September 30, 2013, 185,860 shares were available for future grants. The BancFirst ISOP will terminate on December 31, 2014. 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 September 30, 2013 will become exercisable through the year 2020. 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 amended the BancFirst Directors’ Stock Option Plan to increase the number of shares to be issued under the plan to 205,000 shares in May 2009. At September 30, 2013, 5,000 shares were available for future grants. 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 September 30, 2013 will become exercisable through the year 2017. 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:

	Options			Wgtd. Avg. Exercise Price		Wgtd. Avg. Remaining Contractual Term			Aggregate Intrinsic Value
	(Dollars in thousands, except per share data)
Nine Months Ended September 30, 2013
Outstanding at December 31, 2012		1,216,981		$	31.98
Options granted		60,000			44.11
Options exercised		(118,414	)		25.13
Options canceled, forfeited or expired		(5,000	)		43.02
Outstanding at September 30, 2013		1,153,567			33.26		8.69	Yrs	$	24,003
Exercisable at September 30, 2013		540,167			26.74		5.54	Yrs	$	14,763

15

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands, except per share data)
Weighted average grant-date fair value per share of options granted	$	10.63	$	—	$	9.05	$	—
Total intrinsic value of options exercised		1,424		1,152		2,653		2,180
Cash received from options exercised		1,775		794		2,976		1,516
Tax benefit realized from options exercised		551		446		1,026		843

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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
	(Dollars in thousands)
Stock-based compensation expense	$	399		$	391		$	1,094		$	1,189
Tax benefit		(154	)		(151	)		(423	)		(460	)
Stock-based compensation expense, net of tax	$	245		$	240		$	671		$	729

The Company will continue to amortize the remaining fair value of stock options, over the remaining vesting period of approximately seven years. The following table shows the remaining fair value of stock options:

	September 30, 2013
	(Dollars in thousands)
Fair value of stock options	$	4,902

The following table shows the assumptions used for computing stock-based compensation expense under the fair value method:

	Nine Months Ended September 30,
	2013			2012
Risk-free interest rate		2.70	%		1.74	%
Dividend yield		2.00	%		2.00	%
Stock price volatility		18.35	%		32.88	%
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.

(7) 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.

16

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
Number of shares repurchased		—		—		40,241		6,787
Average price of shares repurchased	$	—	$	—	$	40.88	$	37.70
Shares remaining to be repurchased		194,723		234,964		194,723		234,964

The Company and BancFirst are subject to risk-based capital guidelines issued by the Board of Governors of the Federal Reserve System and the 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 September 30, 2013 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:

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(Dollars in thousands)
As of September 30, 2013:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	552,380		14.72	%	$	300,282		8.00	%		N/A		N/A
BancFirst		520,453		13.90	%		299,606		8.00	%	$	374,507		10.00	%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	513,521		13.68	%	$	150,141		4.00	%		N/A		N/A
BancFirst		481,594		12.86	%		149,803		4.00	%	$	224,704		6.00	%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	513,521		8.75	%	$	177,802		3.00	%		N/A		N/A
BancFirst		481,594		8.22	%		177,207		3.00	%	$	295,346		5.00	%

As of September 30, 2013, BancFirst was considered to be “well capitalized” and there are no conditions or events since the most recent notification of BancFirst’s capital category that management believes would materially change its category under capital requirements existing as of the report date. To be well capitalized under Federal bank regulatory agency definitions, a depository institution must have a Tier 1 Ratio of at least 6%, a combined Tier 1 and Tier 2 Ratio of at least 10%, and a Leverage Ratio of at least 5%. The Company’s trust preferred securities have continued to be included in Tier 1 capital as the Company’s total assets do not exceed $10 billion.

Basel III Capital Rules

In July 2013, the three Federal bank regulatory agencies jointly published interim final rules (the “Basel III Capital Rules”) establishing a new comprehensive capital framework for U.S. banking organizations. The rules implement the Basel Committee’s December 2010 framework known as “Basel III” for strengthening international capital standards as well as certain provisions of the Dodd-Frank Act. These Rules substantially revise the risk-based capital requirements applicable to bank holding companies and depository institutions, compared to the current U.S. risk-based capital rules. The Basel III Capital Rules define the components of capital and address other issues affecting the numerator in banking institutions’ regulatory capital ratios. These Rules also address risk weights and other issues affecting the denominator in banking institutions’ regulatory capital ratios and replace the existing risk-weighting approach with a more risk-sensitive approach. The Basel III Capital Rules also implement the requirements of Section 939A of the Dodd-Frank Act to remove references to credit ratings from the federal banking agencies’ rules. The Basel III Capital Rules are effective for the Company and BancFirst on January 1, 2015 (subject to a 4-year phase-in period).

17

The Basel III Capital Rules, among other things, (i) introduce a new capital measure called “Common Equity Tier 1” (“CET1”), (ii) specify that Tier 1 capital consist of CET1 and “Additional Tier 1 capital” instruments meeting specified requirements, (iii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital, and (iv) expand the scope of the deductions/adjustments as compared to existing regulations.

Under the Basel III Capital Rules, the initial minimum capital ratios as of January 1, 2015 will be as follows:

4.5% CET1 to risk-weighted assets.

6.0% Tier 1 capital to risk-weighted assets.

8.0% Total capital to risk-weighted assets.

4.0% Minimum leverage ratio

Implementation of the deductions and other adjustments to CET1 will begin on January 1, 2015 and will be phased-in over a 4-year period (beginning at 40% on January 1, 2015 and an additional 20% per year thereafter). Under the new rule, 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 will begin on January 1, 2016 at the 0.625% level and be phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reaches 2.5% on January 1, 2019).

Management believes that, as of September 30, 2013, the Company and BancFirst would meet all capital adequacy requirements under the Basel III Capital Rules on a fully phased-in basis as if such requirements were currently in effect.

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(8) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended September 30, 2013
Basic
Income available to common stockholders	$	14,491		15,287,535	$	0.94
Effect of stock options		—		307,346
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	14,491		15,594,881	$	0.93
Three Months Ended September 30, 2012
Basic
Income available to common stockholders	$	13,860		15,174,755	$	0.91
Effect of stock options		—		272,639
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	13,860		15,447,394	$	0.90
Nine Months Ended September 30, 2013
Basic
Income available to common stockholders	$	40,456		15,252,967	$	2.65
Effect of stock options		—		263,387
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	40,456		15,516,354	$	2.61
Nine Months Ended September 30, 2012
Basic
Income available to common stockholders	$	39,594		15,155,035	$	2.61
Effect of stock options		—		276,063
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	39,594		15,431,098	$	2.57

The following table shows the number and average exercise price of options that were excluded from the computation of diluted net income per common share for each period because the options’ exercise prices were greater than the average market price of the common shares:

	Shares		Average Exercise Price
Three Months Ended September 30, 2013		3,804	$	50.74
Three Months Ended September 30, 2012		479,000		39.21
Nine Months Ended September 30, 2013		330,165		40.09
Nine Months Ended September 30, 2012		597,200		38.66

(9) 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 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.

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•    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, foreclosed assets, other real estate, 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, 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 equity securities classified as available for sale 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 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 entire portfolio 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 adjusted for the specific issue. From time to time, the Company will validate, on a sample basis, 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.

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.

Mortgage Servicing Intangibles

The Company acquired Mortgage Servicing Intangibles with the acquisition of 1^st Bank Oklahoma on July 12, 2011. Mortgage Servicing Intangibles are amortized based on current prepayment assumptions and are adjusted to fair value quarterly, if impaired. Fair value is estimated based on the present value of future cash flows over

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several interest rate scenarios, which are then discounted at risk-adjusted rates. The Company considers portfolio characteristics, contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service and other economic factors. When available, fair value estimates and assumptions are compared to observable market data and the recent market activity and actual portfolio experience.

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of September 30, 2013 and 2012, 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)
September 30, 2013
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		340,904		20,000		360,904
Mortgage-backed securities		—		14,455		19,501		33,956
States and political subdivisions		—		53,386		—		53,386
Other securities		—		3,421		10,760		14,181
Derivative assets		—		3,049		—		3,049
Derivative liabilities		—		1,886		—		1,886
Loans held for sale		—		4,934		—		4,934
Mortgage servicing intangibles		—		—		595		595
September 30, 2012
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		413,131		20,000		433,131
Mortgage-backed securities		—		22,390		—		22,390
States and political subdivisions		—		57,829		—		57,829
Other securities		—		—		10,356		10,356
Derivative assets		—		4,175		—		4,175
Derivative liabilities		—		1,868		—		1,868
Loans held for sale		—		13,384		—		13,384
Mortgage servicing intangibles		—		—		844		844

The changes in Level 3 assets measured at estimated fair value on a recurring basis during the nine months ended September 30, 2013 and 2012 were as follows:

	Nine Months Ended
	September 30,
	2013			2012
	(Dollars in thousands)
Balance at the beginning of the year	$	30,779		$	33,225
Purchases, issuances and settlements		20,600			1,897
Sales		(251	)		(5,563	)
Gains included in earnings		182			4,424
Total unrealized losses		(454	)		(2,783	)
Balance at the end of the period	$	50,856		$	31,200

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 nine months ended September 30, 2013 and 2012, the Company did not transfer any securities between levels in the fair value hierarchy.

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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.

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.

Foreclosed 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 foreclosed 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 and the related gains or losses recognized during the period:

	Level 1		Level 2		Level 3		Total Fair Value		Gains (Losses)
	(Dollars in thousands)
Nine Months Ended September 30, 2013
Impaired loans (less specific allowance)		—		—	$	36,286	$	36,286	$	—
Foreclosed assets		—		—		307		307		(9	)
Other real estate owned		—		—		8,121		8,121		(754	)
Nine Months Ended September 30, 2012
Impaired loans (less specific allowance)		—		—	$	43,206	$	43,206	$	—
Foreclosed assets		—		—		237		237		(84	)
Other real estate owned		—		—		9,559		9,559		(1,226	)

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, Federal Funds Sold 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

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.

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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.

Long-term Borrowings

The fair values of fixed-rate long-term borrowings are estimated using the rates that would be charged for borrowings of similar remaining maturities.

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:

	September 30,
	2013				2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,826,936	$	1,826,936	$	1,912,614	$	1,912,614
Securities held for investment		12,213		12,328		16,769		17,080
Level 3 inputs:
Loans, net		3,320,079		3,346,578		3,078,838		3,143,799
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		5,309,464		5,338,655		5,253,505		5,275,969
Short-term borrowings		5,074		5,074		5,665		5,665
Long-term borrowings		8,938		8,889		11,255		11,333
Junior subordinated debentures		26,804		28,927		26,804		28,777
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				1,378				1,300
Letters of credit				468				458

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 quarterly) 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 September 30, 2013 or 2012.

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(10) DERIVATIVE FINANCIAL INSTRUMENTS

The Company enters into oil and gas swaps and options contracts to accommodate the business needs of its customers. Upon the origination of an oil or gas swap or option contract with a customer, the Company simultaneously enters into an offsetting contract with a counterparty to mitigate the exposure to fluctuations in oil and gas prices. These derivatives are not designated as hedged instruments and are recorded on the Company’s consolidated balance sheet at fair value.

The Company utilizes dealer quotations and observable market data inputs to substantiate internal valuation models. The notional amounts and estimated fair values of oil and gas derivative positions outstanding are presented in the following table:

	September 30, 2013
Oil and Natural Gas Swaps and Options	Notional Units	Notional Amount			Estimated Fair Value
	(Notional amounts and dollars in thousands)
Oil
Derivative assets	Barrels		335		$	1,665
Derivative liabilities	Barrels		(335	)		(1,178	)
Natural Gas
Derivative assets	MMBTUs		2,962			1,384
Derivative liabilities	MMBTUs		(2,962	)		(708	)
Total Fair Value	Included in
Derivative assets	Other assets					3,049
Derivative liabilities	Other liabilities					(1,886	)

The following table is a summary of the Company’s recognized income related to the activity, which was included in other noninterest income:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands)
Derivative income	$	71	$	205	$	309	$	555

The Company’s credit exposure on oil and gas swaps and options varies based on the current market prices of oil and natural gas. Other than credit risk, changes in the fair value of customer positions will be offset by equal and opposite changes in the counterparty positions. The net positive fair value of the contracts represents the profit derived from the activity and is unaffected by market price movements.

Customer credit exposure is managed by strict position limits and is primarily offset by first liens on production while the remainder is offset by cash. Counterparty credit exposure is managed by selecting highly rated counterparties (rated A- or better by Standard and Poor’s) and monitoring market information.

The following table is a summary of the Company’s net credit exposure relating to oil and gas swaps and options with bank counterparties:

	September 30, 2013
	(Dollars in thousands)
Credit exposure	$	(149	)

Balance Sheet Offsetting

Derivatives may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements. The Company’s derivative transactions with upstream financial institution counterparties and bank customers are generally executed under International Swaps and Derivative Association (“ISDA”) master

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agreements which include “right of set-off” provisions. In such cases there is generally a legally enforceable right to offset recognized amounts and there may be an intention to settle such amounts on a net basis. Nonetheless, the Company does not generally offset such financial instruments for financial reporting purposes.

(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:
September 30, 2013
Net interest income (expense)	$	14,043	$	25,613	$	1,491	$	(435	)	$	—		$	40,712
Noninterest income		3,213		12,750		6,864		15,651			(14,826	)		23,652
Income before taxes		9,173		15,229		2,619		8,688			(14,654	)		21,055
September 30, 2012
Net interest income (expense)	$	13,267	$	26,302	$	1,777	$	(514	)	$	—		$	40,832
Noninterest income		2,840		11,153		7,404		14,881			(14,162	)		22,116
Income before taxes		8,302		15,234		3,266		7,463			(14,015	)		20,250
Nine Months Ended:
September 30, 2013
Net interest income (expense)	$	41,997	$	76,181	$	4,786	$	(1,366	)	$	—		$	121,598
Noninterest income		9,519		36,141		19,839		44,192			(41,771	)		67,920
Income before taxes		26,218		43,818		8,014		24,425			(41,481	)		60,994
September 30, 2012
Net interest income (expense)	$	39,784	$	79,317	$	5,211	$	(1,794	)	$	—		$	122,518
Noninterest income		8,193		32,009		23,482		43,507			(41,274	)		65,917
Income before taxes		24,954		45,433		11,664		19,682			(41,017	)		60,716
Total Assets:
September 30, 2013	$	2,031,194	$	3,723,491	$	120,476	$	647,336		$	(595,767	)	$	5,926,730
December 31, 2012		1,996,539		3,801,653		186,473		602,342			(564,757	)		6,022,250
September 30, 2012		1,892,444		3,745,727		126,704		636,853			(564,977	)		5,836,751

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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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, 2012 consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 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. Actual results may differ materially from forward-looking statements.

SUMMARY

BancFirst Corporation reported net income of $14.5 million, or $0.93 diluted earnings per common share, for the third quarter of 2013, compared to net income of $13.9 million, or $0.90 diluted earnings per common share for the third quarter of 2012. Net income for the first nine months of 2013 was $40.5 million or $2.61 diluted earnings per common share, compared to $39.6 million, or $2.57 diluted earnings per common share for the nine months ended September 30, 2012.

The Company’s net interest income for the third quarter of 2013 was $40.7 million compared to $40.8 million for the third quarter of 2012. The net interest margin for the quarter was 3.01% compared to 3.06% a year ago as interest rates have remained at historically low levels. The Company’s provision for loan loss for the third quarter of 2013 was virtually zero, primarily due to reductions in adversely graded loans. Net charge-offs for the quarter were $111,000, compared to $411,000 for the same period a year ago. Noninterest income for the quarter totaled $23.7 million compared to $22.1 million for the third quarter of 2012. Noninterest expense was $43.3 million compared to $42.5 million a year ago.

At September 30, 2013, the Company’s total assets were $5.9 billion, compared to $6.0 billion at December 31, 2012. Loans totaled $3.4 billion, up $116.5 million over December 31, 2012. Deposits totaled $5.3 billion, down $131.4 million due to a temporary influx of deposits at year end 2012 and efforts by the Company to move certain commercial deposits into sweep accounts. The Company’s total stockholders’ equity was $546.0 million, an increase of $26.4 million or 5.1% over December 31, 2012.

Asset quality remained strong and was little changed from the previous quarters. Nonperforming and restructured assets edged down to 0.72% of total assets compared to 0.81% at December 31, 2012. The allowance to total loans was 1.16% compared to 1.19% at year end 2012.

FUTURE APPLICATION OF ACCOUNTING STANDARDS

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

SEGMENT INFORMATION

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

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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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Income Statement Data
Net interest income	$	40,712		$	40,832		$	121,598		$	122,518
Provision for loan losses		(12	)		233			804			654
Securities transactions		90			385			341			4,643
Total noninterest income		23,652			22,116			67,920			65,917
Salaries and employee benefits		26,094			24,641			76,388			74,271
Total noninterest expense		43,321			42,465			127,720			127,065
Net income		14,491			13,860			40,456			39,594
Per Common Share Data
Net income – basic	$	0.94		$	0.91		$	2.65		$	2.61
Net income – diluted		0.93			0.90			2.61			2.57
Cash dividends		0.31			0.29			0.89			0.83
Performance Data
Return on average assets		0.99	%		0.96	%		0.94	%		0.93	%
Return on average stockholders’ equity		10.62			10.86			10.14			10.59
Cash dividend payout ratio		33.05			31.87			33.56			31.80
Net interest spread		2.85			2.87			2.90			2.94
Net interest margin		3.01			3.06			3.06			3.13
Efficiency ratio		67.31			67.46			67.39			67.43
Net charge-offs to average loans		0.00			0.01			0.02			0.04

Net Interest Income

For the three months ended September 30, 2013, net interest income, which is the Company’s principal source of operating revenue, was $40.7 million compared to $40.8 million for the three months ended September 30, 2012. 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 decreased slightly for the third quarter of 2013 compared to the third quarter of 2012, due to continued low interest rates and the maturity or pay down of higher-yielding earning assets. If interest rates and/or loan volume do not increase, management expects continued compression of its net interest margin for the remainder of 2013 as higher yielding loans and securities mature and are replaced at current market rates.

Net interest income for the nine months ended September 30, 2013 was $121.6 million compared to $122.5 million for the nine months ended September 30, 2012. The net interest margin for the year-to-date decreased compared to the same period of the previous year, due to continued low interest rates and the maturity or pay down of higher-yielding earning assets.

Provision for Loan Losses

The Company’s provision for loan loss for the third quarter of 2013 was virtually zero, primarily due to reductions in adversely graded loans. 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

27

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 $111,000 for the third quarter of 2013, compared to $411,000 for the third quarter of 2012. The rate of net charge-offs to average total loans is presented in the preceding table.

For the nine months ended September 30, 2013, the Company’s provision for loan losses was $804,000 compared to $654,000 for the same period of 2012. Net loan charge-offs were $670,000 compared to $1.1 million for the same period of the prior year.

Noninterest Income

Noninterest income totaled $23.7 million for the third quarter of 2013 compared to $22.1 million for the third quarter of 2012. Service charges on deposits have increased due to an increase in deposit accounts and a higher volume of customer overdrafts.

Noninterest income for the nine months ended September 30, 2013 totaled $67.9 million compared to $65.9 million for the nine months ended September 30, 2012. The increase year over year was due to increases in service charges on deposits, trust revenue and insurance commissions, partially offset by a $4.5 million pretax securities gain from the sale of an investment by Council Oak Investment Corporation in the first quarter of 2012.

The Company had fees from debit card usage totaling $13.2 million and $12.3 million during the nine months ended September 30, 2013 and 2012, respectively. The Dodd-Frank Act has given the Federal Reserve the authority to establish rules regarding debit card interchange fees charged for electronic debit transactions by payment card issuers. Because of the uncertainty as to any future rulemaking by the Federal Reserve and the inability to forecast competitive responses, the Company cannot provide any assurance as to the ultimate impact of the Dodd-Frank Act on the amount of fees from debit card usage reported in future periods.

Noninterest Expense

For the third quarter of 2013, noninterest expense totaled $43.3 million compared to $42.5 million for the third quarter of 2012.

For the nine months ended September 30, 2013, noninterest expense totaled $127.7 million compared to $127.1 million for the nine months ended September 30, 2012. Noninterest expense increased partly due to an increase in salaries and employee benefits. Also, noninterest expense in 2012 included $1.6 million in merger related costs and approximately $500,000 of expenses related to the sale of an investment by the Company’s Small Business Investment Corporation, Council Oak Investment Corporation, a wholly-owned subsidiary of BancFirst. Additionally, the net expense from other real estate owned for the first nine months of 2012 was approximately $499,000 higher than for the first nine months of 2013.

Income Taxes

The Company’s effective tax rate on income before taxes was 31.2% for the third quarter of 2013, compared to 31.6% for the third quarter of 2012.

The Company’s effective tax rate on income before taxes was 33.7% for the first nine months of 2013, compared to 34.8% for the first nine months of 2012. Additional tax credits have reduced the Company’s effective tax rate in 2013.

28

FINANCIAL POSITION

BANCFIRST CORPORATION

SELECTED CONSOLIDATED FINANCIAL DATA

(Dollars in thousands, except per share data)

	September 30,			December 31,			September 30,
	2013			2012			2012
	(unaudited)						(unaudited)
Balance Sheet Data
Total assets	$	5,926,730		$	6,022,250		$	5,836,751
Total loans		3,358,938			3,242,427			3,116,096
Allowance for loan losses		38,859			38,725			37,258
Securities		474,640			562,542			540,475
Deposits		5,309,464			5,440,830			5,253,505
Stockholders’ equity		545,973			519,567			510,387
Book value per share		35.69			34.09			33.58
Tangible book value per share		32.08			30.37			29.82
Average loans to deposits (year-to-date)		63.13	%		60.27	%		60.11	%
Average earning assets to total assets (year-to-date)		92.65			92.73			92.66
Average stockholders’ equity to average assets (year-to-date)		9.24			8.79			8.78
Asset Quality Ratios
Nonperforming and restructured loans to total loans		1.02	%		1.20	%		1.30	%
Nonperforming and restructured assets to total assets		0.72			0.81			0.86
Allowance for loan losses to total loans		1.16			1.19			1.20
Allowance for loan losses to nonperforming and restructured loans		113.00			99.42			91.73

Cash, Federal Funds Sold and Interest-Bearing Deposits with Banks

The aggregate of cash and due from banks, interest-bearing deposits with banks, and Federal funds sold as of September 30, 2013 decreased $118.9 million from December 31, 2012 and $85.7 million from September 30, 2012. The higher level at year-end 2012 was due primarily to funds provided by the temporary influx of deposits at year-end 2012 and efforts by the Company to move certain commercial deposits into sweep accounts. Federal funds sold consist of overnight investments of excess funds with other financial institutions. Due to the Federal Reserve Bank’s intervention into the funds market that has resulted in near zero overnight Federal funds rates, the Company has continued to maintain the majority of its excess funds with the Federal Reserve Bank. The Federal Reserve Bank pays interest on these funds based upon the lowest target rate for the maintenance period which continues to be 0.25%.

Securities

At September 30, 2013, total securities decreased $87.9 million compared to December 31, 2012 and decreased $65.8 million compared to September 30, 2012. 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 $6.0 million at September 30, 2013, compared to an unrealized gain of $9.7 million at December 31, 2012, and an unrealized gain of $10.3 million at September 30, 2012. These unrealized gains are included in the Company’s stockholders’ equity as accumulated other comprehensive income, net of income tax, in the amounts of $3.9 million, $6.3 million and $6.7 million respectively.

Loans (Including Acquired Loans)

At September 30, 2013, total loans were up $116.5 million from December 31, 2012 and up $242.8 million from September 30, 2012, due to internal growth.

Allowance for Loan Losses/Fair Value Adjustments on Acquired Loans

At September 30, 2013, the allowance for loan losses represented 1.16% of total loans, compared to 1.19% at December 31, 2012, and 1.20% at September 30, 2012.

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 credit component of the adjustment was $2.3 million at September 30, 2013, $2.8 million at December 31, 2012, and $3.1 million at September 30, 2012 while the acquired loans outstanding were $72.9 million, $108.5 million and $136.6 million, respectively. The decrease from the third quarter of 2012 was due to improved credit quality of the loans, loan payoffs and the early settlement of the loan escrow agreement related to one of the bank acquisitions.

29

Nonperforming and Restructured Assets

Nonperforming and restructured assets totaled $42.8 million at September 30, 2013, compared to $48.5 million at December 31, 2012 and $50.4 million at September 30, 2012. The Company’s level of nonperforming and restructured assets has continued to be relatively low.

Nonaccrual loans totaled $15.1 million at September 30, 2013, compared to $20.5 million at the end of 2012. Nonaccrual loans decreased $5.1 million due primarily to the resolution of several loans. 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. Total interest income, which was not accrued on nonaccrual loans outstanding, was approximately $1.3 million for the nine months ended September 30, 2013 and $1.0 million for the nine months ended September 30, 2012. Only a small amount of this interest is expected to be ultimately collected.

Other real estate owned and repossessed assets totaled $8.4 million at September 30, 2013, compared to $9.6 million at December 31, 2012 and $9.8 million at September 30, 2012.

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 $5.1 million of these loans at September 30, 2013 compared to $5.3 million at December 31, 2012 and $5.2 million at September 30, 2012. 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 September 30, 2013, total deposits decreased $131.4 million compared to December 31, 2012 and increased $56.0 million compared to September 30, 2012. The decrease from December 2012 was due to a temporary influx of deposits at year end 2012 and efforts by the Company to move certain commercial deposits into sweep accounts. The Company’s core deposits provide it with a stable, low-cost funding source. The Company’s core deposits as a percentage of total deposits were 93.3% at September 30, 2013, compared to 92.8% at December 31, 2012 and 92.6% at September 30, 2012. Noninterest-bearing deposits to total deposits were 38.1% at September 30, 2013, compared to 37.1% at December 31, 2012 and 36.7% at September 30, 2012.

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 $5.1 million at September 30, 2013, compared to $4.6 million from December 31, 2012 and $5.7 million at September 30, 2012.

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 $554.7 million, are pledged as collateral for the borrowings under the line of credit. As of September 30, 2013 the Company had approximately $8.9 million in advances outstanding, compared to $9.2 million at December 31, 2012 and $11.3 million at September 30, 2012. The advances mature at varying dates through 2014.

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, 2012.

30

Capital Resources

Stockholders’ equity totaled $546.0 million at September 30, 2013, compared to $519.6 million at December 31, 2012 and $510.4 million at September 30, 2012. In addition to net income of $40.5 million, other changes in stockholders’ equity during the nine months ended September 30, 2013 included $3.6 million related to stock option exercises and $1.1 million related to stock-based compensation, that were partially offset by $13.6 million in dividends, $2.7 million of common stock acquired and canceled, and a $2.4 million decrease in other comprehensive income. The Company’s leverage ratio and total risk-based capital ratio were 8.75% and 14.72%, respectively, at September 30, 2013, well in excess of the regulatory minimums.

See Note (7) of the Notes to the 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, 2012.

31

BANCFIRST CORPORATION

CONSOLIDATED AVERAGE BALANCE SHEETS AND INTEREST MARGIN ANALYSIS

(Unaudited)

Taxable Equivalent Basis (Dollars in thousands)

	Three Months Ended September 30,
	2013								2012
				Interest		Average						Interest		Average
	Average			Income/		Yield/			Average			Income/		Yield/
	Balance			Expense		Rate			Balance			Expense		Rate
ASSETS
Earning assets:
Loans (1)	$	3,297,360		$	41,766		5.03	%	$	3,093,928		$	42,112		5.40	%
Securities – taxable		453,614			1,097		0.96			516,187			1,681		1.29
Securities – tax exempt		40,549			438		4.28			47,649			563		4.69
Interest-bearing deposits w/ banks & FFS		1,601,947			1,031		0.26			1,667,921			1,071		0.25
Total earning assets		5,393,470			44,332		3.26			5,325,685			45,427		3.38
Nonearning assets:
Cash and due from banks		173,030								141,353
Interest receivable and other assets		302,772								306,079
Allowance for loan losses		(39,284	)							(37,533	)
Total nonearning assets		436,518								409,899
Total assets	$	5,829,988							$	5,735,584
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities:
Transaction deposits	$	629,765		$	155		0.10	%	$	693,616		$	224		0.13	%
Savings deposits		1,838,186			1,051		0.23			1,783,662			1,412		0.31
Time deposits		790,106			1,643		0.82			854,967			2,093		0.97
Short-term borrowings		4,921			1		0.05			6,521			7		0.43
Long-term borrowings		9,584			52		2.16			11,282			84		2.95
Junior subordinated debentures		26,804			492		7.29			26,804			492		7.28
Total interest-bearing liabilities		3,299,366			3,394		0.41			3,376,852			4,312		0.51
Interest-free funds:
Noninterest-bearing deposits		1,965,052								1,825,053
Interest payable and other liabilities		24,107								27,404
Stockholders’ equity		541,463								506,275
Total interest free funds		2,530,622								2,358,732
Total liabilities and stockholders’ equity	$	5,829,988							$	5,735,584
Net interest income				$	40,938							$	41,115
Net interest spread							2.85	%							2.87	%
Effect of interest free funds							0.16	%							0.19	%
Net interest margin							3.01	%							3.06	%

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

32

BANCFIRST CORPORATION

CONSOLIDATED AVERAGE BALANCE SHEETS AND INTEREST MARGIN ANALYSIS

(Unaudited)

Taxable Equivalent Basis (Dollars in thousands)

	Nine Months Ended September 30,
	2013								2012
				Interest		Average						Interest		Average
	Average			Income/		Yield/			Average			Income/		Yield/
	Balance			Expense		Rate			Balance			Expense		Rate
ASSETS
Earning assets:
Loans (1)	$	3,251,226		$	124,589		5.12	%	$	3,064,584		$	126,126		5.48	%
Securities – taxable		497,410			3,745		1.01			523,953			6,174		1.57
Securities – tax exempt		42,769			1,452		4.54			50,874			1,847		4.84
Interest-bearing deposits w/ banks & FFS		1,560,303			2,980		0.26			1,620,688			3,105		0.26
Total earning assets		5,351,708			132,766		3.32			5,260,099			137,252		3.48
Nonearning assets:
Cash and due from banks		156,353								144,471
Interest receivable and other assets		307,092								309,874
Allowance for loan losses		(38,904	)							(37,610	)
Total nonearning assets		424,541								416,735
Total assets	$	5,776,249							$	5,676,834
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities:
Transaction deposits	$	654,217		$	486		0.10	%	$	718,997		$	758		0.14	%
Savings deposits		1,803,802			3,143		0.23			1,737,242			4,356		0.33
Time deposits		806,530			5,149		0.85			871,749			6,747		1.03
Short-term borrowings		4,554			4		0.13			7,255			23		0.42
Long-term borrowings		9,707			176		2.42			12,832			280		2.91
Junior subordinated debentures		26,804			1,474		7.35			32,504			1,643		6.73
Total interest-bearing liabilities		3,305,614			10,432		0.42			3,380,579			13,807		0.54
Interest-free funds:
Noninterest-bearing deposits		1,915,265								1,770,283
Interest payable and other liabilities		21,884								27,749
Stockholders’ equity		533,486								498,223
Total interest free funds		2,470,635								2,296,255
Total liabilities and stockholders’ equity	$	5,776,249							$	5,676,834
Net interest income				$	122,334							$	123,445
Net interest spread							2.90	%							2.94	%
Effect of interest free funds							0.16	%							0.19	%
Net interest margin							3.06	%							3.13	%

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

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, 2012, 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 Disclosure Committee, which includes the Company’s Chief Risk Officer, Chief Asset Quality Officer, Chief Internal Auditor, Senior Financial Officer, Treasurer, Controller, and General Counsel have evaluated, as of the last day of the period covered by this report,

33

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 has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

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.

As of September 30, 2013, 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, 2012.

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

The following table provides information with respect to purchases made by or on behalf of the Company or any “affiliated purchaser” (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of the Company’s common stock during the three months ended September 30, 2013.

Period	Total Number of Shares Purchased			Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan		Maximum Number of Shares That May Yet Be Purchased Under the Plan at the End of the Period
July 1, 2013 to July 31, 2013		20,600	(1)	$	50.76		—		194,723
August 1, 2013 to August 31, 2013		—			—		—		194,723
September 1, 2013 to September 30, 2013		—			—		—		194,723

(1) Represents private transactions with individual shareholders.

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
3.1	Second Amended and Restated Certificate of Incorporation of BancFirst Corporation (filed as Exhibit 1 to the Company’s 8-A/A filed July 23, 1998 and incorporated herein by reference).
3.2	Certificate of Amendment of the Second Amended and Restated Certificate of Incorporation of BancFirst Corporation dated June 15, 2004 (filed as Exhibit 3.5 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2004 and incorporated herein by reference).
3.3	Amended By-Laws (filed as Exhibit 3.2 to the Company’s Annual Report on Form 10-K for the Year Ended December 31, 1992 and incorporated herein by reference).
3.4	Resolution of the Board of Directors amending Section XXVII of the Company’s By-Laws (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K dated February 26, 2004 and incorporated herein by reference).
3.5	Amendment to Amended By-Laws, amending Article XVI, Section 1 and Article XVII, Section 1 of the Company’s By-Laws (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K dated February 28, 2008 and incorporated herein by reference).
3.6	Certificate of Amendment of the Second Amended and Restated Certificate of Incorporation of BancFirst Corporation dated May 23, 2013 (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K dated May 29, 2013 and incorporated herein by reference).
4.1	Instruments defining the rights of securities holders (see Exhibits 3.1, 3.2, 3.3 and 3.4 above).
4.2	Rights Agreement, dated as of February 25, 1999, between BancFirst Corporation and BancFirst, as Rights Agent, including as Exhibit A the form of Certificate of Designations of the Company setting forth the terms of the Preferred Stock, as Exhibit B the form of Right Certificate and as Exhibit C the form of Summary of Rights Agreement (filed as Exhibit 4.1 to the Company’s 8-K dated January 28, 2009 and incorporated herein by reference).
4.3	Amendment No. 1 to Rights Agreement, dated as of February 25, 1999, between BancFirst Corporation and BancFirst, as Rights Agent (filed as Exhibit 4.2 to the Company’s 8-K dated January 28, 2009 and incorporated herein by reference).
4.4	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).
4.5	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).
4.6	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 on Form S-3 to the Company’s registration statement, File No. 333-112488 dated February 4, 2004, and incorporated herein by reference).
4.7	Form of Certificate of 7.20% Junior Subordinated Deferrable Interest Debenture of BancFirst Corporation (filed as Exhibit 4.2 on Form S-3 to the Company’s registration statement, File No. 333-112488 dated February 4, 2004, and incorporated herein by reference).
4.8	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).
4.9	Form of Indenture relating to the Union National Bancshares, Inc. (BancFirst Corp. as successor) Fixed/Floating Rate Junior Subordinated Deferrable Interest Debentures, Form of Fixed/Floating Rate Junior Subordinated Deferrable Interest Debenture, and Form of Certificate to Trustee (filed as Exhibit 4.9 to the Company’s Annual Report on Form 10-K for the Year Ended December 31, 2010 and incorporated herein by reference).
4.10	Form of Indenture relating to the FBC Financial Corporation (BancFirst Corp. as successor) Floating Rate Junior Subordinated Deferrable Interest Debentures, Form of Floating Rate Junior Subordinated Deferrable Interest Debenture, and Form of Certificate to Trustee (filed as Exhibit 4.10 to the Company’s Quarterly Report on Form 10-Q for the Quarter ended September 30, 2011 and incorporated herein by reference).

35

Exhibit Number	Exhibit
10.1	BancFirst Corporation Employee Stock Ownership and Trust Agreement adopted December 21, 2006 effective January 1, 2007 (filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the Quarter ended March 31, 2008 and incorporated herein by reference).
10.2	Second Amended and Restated BancFirst Corporation Non-Employee Directors’ Stock Option Plan (filed as Exhibit 10.7 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2009 and incorporated herein by reference).
10.3	Third Amended and Restated BancFirst Corporation Directors’ Deferred Stock Compensation Plan (filed as Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2009 and incorporated herein by reference).
10.4	Amended and Restated BancFirst Corporation Thrift Plan adopted March 25, 2010 effective January 1, 2010 (filed as Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2010 and incorporated herein by reference).
10.5	Amendment (Code Section 415 Compliance) to the BancFirst Corporation Employee Stock Ownership Plan and Trust Agreement, adopted July 23, 2009. (filed as Exhibit 10.7 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2010 and incorporated herein by reference).
10.6	Amendment (Pension Protection Act, Heart Act and the Worker, Retiree, and Employer Recovery Act) to the BancFirst Corporation Employee Stock Ownership Plan and Trust Agreement, adopted December 17, 2009 (filed as Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2010 and incorporated herein by reference).
10.7	Amendment to the Amended and Restated BancFirst Corporation Thrift Plan adopted December 16, 2010 effective January 1, 2011 (filed as Exhibit 10.9 to the Company’s Annual Report on Form 10-K for the Year Ended December 31, 2010 and incorporated herein by reference).
10.8	Amendment to the Amended and Restated BancFirst Corporation Thrift Plan adopted October 27, 2011 effective October 1, 2011 (filed as Exhibit 10.9 to the Company’s Annual Report on Form 10-K for the Year Ended December 31, 2011 and incorporated herein by reference).
10.9	Amendment to the Amended and Restated BancFirst Corporation Employee Stock Ownership Plan adopted October 27, 2011 effective October 1, 2011 (filed as Exhibit 10.10 to the Company’s Annual Report on Form 10-K for the Year Ended December 31, 2011 and incorporated herein by reference).
10.10	Eleventh Amended and Restated BancFirst Corporation Stock Option Plan (filed as Exhibit 10.10 to the Company’s Quarterly Report on Form 10-Q for the Quarter Ended June 30, 2013 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).
32.1*	CEO’s Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	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: November 12, 2013	/s/ David E. Rainbolt
	David E. Rainbolt
	President
	Chief Executive Officer
	(Principal Executive Officer)
Date: November 12, 2013	/s/ Randy Foraker
	Randy Foraker
	Executive Vice President
	Interim Chief Financial Officer
	and Chief Risk Officer
	(Principal Financial and Accounting Officer)

37

EX-31.1

Exhibit 31.1

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

I, David E. Rainbolt, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarterly period ended September 30, 2013 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: November 12, 2013	/s/ David E. Rainbolt
	David E. Rainbolt
	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, Randy Foraker, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarterly period ended September 30, 2013 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: November 12, 2013	/s/ Randy Foraker
	Randy Foraker
	Executive Vice President,
	Interim Chief Financial Officer and Chief Risk Officer
	(Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CEO’S CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of BancFirst Corporation (the “Company”) for the period ended September 30, 2013 as filed with the Securities and Exchange Commission (the “Report”), I, David E. Rainbolt, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ David E. Rainbolt

David E. Rainbolt

President and Chief Executive Officer

(Principal Executive Officer)

November 12, 2013

EX-32.2

Exhibit 32.2

CFO’S CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of BancFirst Corporation (the “Company”) for the period ended September 30, 2013 as filed with the Securities and Exchange Commission (the “Report”), I, Randy Foraker, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ Randy Foraker

Randy Foraker

Executive Vice President,

Interim Chief Financial Officer

and Chief Risk Officer

(Principal Financial and Accounting Officer)

November 12, 2013

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DERIVATIVE FINANCIAL INSTRUMENTS

9 Months Ended

Sep. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

(10) DERIVATIVE FINANCIAL INSTRUMENTS

The Company enters into oil and gas swaps and options contracts to accommodate the business needs of its customers. Upon the origination of an oil or gas swap or option contract with a customer, the Company simultaneously enters into an offsetting contract with a counterparty to mitigate the exposure to fluctuations in oil and gas prices. These derivatives are not designated as hedged instruments and are recorded on the Company’s consolidated balance sheet at fair value.

The Company utilizes dealer quotations and observable market data inputs to substantiate internal valuation models. The notional amounts and estimated fair values of oil and gas derivative positions outstanding are presented in the following table:

	September 30, 2013
Oil and Natural Gas Swaps and Options	Notional Units	Notional Amount			Estimated Fair Value
	(Notional amounts and dollars in thousands)
Oil
Derivative assets	Barrels		335		$	1,665
Derivative liabilities	Barrels		(335	)		(1,178	)
Natural Gas
Derivative assets	MMBTUs		2,962			1,384
Derivative liabilities	MMBTUs		(2,962	)		(708	)
Total Fair Value	Included in
Derivative assets	Other assets					3,049
Derivative liabilities	Other liabilities					(1,886	)

The following table is a summary of the Company’s recognized income related to the activity, which was included in other noninterest income:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands)
Derivative income	$	71	$	205	$	309	$	555

The Company’s credit exposure on oil and gas swaps and options varies based on the current market prices of oil and natural gas. Other than credit risk, changes in the fair value of customer positions will be offset by equal and opposite changes in the counterparty positions. The net positive fair value of the contracts represents the profit derived from the activity and is unaffected by market price movements.

Customer credit exposure is managed by strict position limits and is primarily offset by first liens on production while the remainder is offset by cash. Counterparty credit exposure is managed by selecting highly rated counterparties (rated A- or better by Standard and Poor’s) and monitoring market information.

The following table is a summary of the Company’s net credit exposure relating to oil and gas swaps and options with bank counterparties:

	September 30, 2013
	(Dollars in thousands)
Credit exposure	$	(149	)

Balance Sheet Offsetting

Derivatives may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements. The Company’s derivative transactions with upstream financial institution counterparties and bank customers are generally executed under International Swaps and Derivative Association (“ISDA”) master agreements which include “right of set-off” provisions. In such cases there is generally a legally enforceable right to offset recognized amounts and there may be an intention to settle such amounts on a net basis. Nonetheless, the Company does not generally offset such financial instruments for financial reporting purposes.

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Stock-Based Compensation - Assumptions Used for Computing Stock-Based Employee Compensation Expense (Detail)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract]
Risk-free interest rate	2.70%	1.74%
Dividend yield	2.00%	2.00%
Stock price volatility	18.35%	32.88%
Expected term	10 years	10 years

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
INTEREST INCOME
Loans, including fees	$ 41,694	$ 42,026	$ 124,361	$ 125,843
Securities:
Taxable	1,097	1,681	3,745	6,175
Tax-exempt	284	366	944	1,201
Federal funds sold			2	1
Interest-bearing deposits with banks	1,031	1,071	2,978	3,105
Total interest income	44,106	45,144	132,030	136,325
INTEREST EXPENSE
Deposits	2,849	3,729	8,778	11,861
Short-term borrowings	1	7	4	23
Long-term borrowings	52	84	176	280
Junior subordinated debentures	492	492	1,474	1,643
Total interest expense	3,394	4,312	10,432	13,807
Net interest income	40,712	40,832	121,598	122,518
Provision for loan losses	(12)	233	804	654
Net interest income after provision for loan losses	40,724	40,599	120,794	121,864
NONINTEREST INCOME
Trust revenue	2,122	1,927	6,043	5,457
Service charges on deposits	13,575	11,896	38,835	33,534
Securities transactions	90	385	341	4,643
Income from sales of loans	560	737	1,939	2,075
Insurance commissions	3,892	3,661	10,982	9,457
Cash management	1,620	1,971	4,669	5,951
Gain on sale of other assets	49	26	300	369
Other	1,744	1,513	4,811	4,431
Total noninterest income	23,652	22,116	67,920	65,917
NONINTEREST EXPENSE
Salaries and employee benefits	26,094	24,641	76,388	74,271
Occupancy and fixed assets expense, net	2,768	2,877	7,849	7,800
Depreciation	2,307	2,253	6,973	6,610
Amortization of intangible assets	424	457	1,291	1,371
Data processing services	1,173	1,208	3,587	3,649
Net expense from other real estate owned	105	200	870	1,369
Marketing and business promotion	1,668	1,998	4,631	5,332
Deposit insurance	750	745	2,235	2,188
Other	8,032	8,086	23,896	24,475
Total noninterest expense	43,321	42,465	127,720	127,065
Income before taxes	21,055	20,250	60,994	60,716
Income tax expense	6,564	6,390	20,538	21,122
Net income	14,491	13,860	40,456	39,594
NET INCOME PER COMMON SHARE
Basic	$ 0.94	$ 0.91	$ 2.65	$ 2.61
Diluted	$ 0.93	$ 0.90	$ 2.61	$ 2.57
OTHER COMPREHENSIVE INCOME
Unrealized losses on securities, net of tax of $186, $44, $1,269 and $654, respectively	(346)	(82)	(2,360)	(1,214)
Reclassification adjustment for gains included in net income, net of tax of $6, $93, $48 and $821, respectively	(11)	(172)	(89)	(1,525)
Other comprehensive loss, net of tax of $192, $137, $1,317 and $1,475, respectively	(357)	(254)	(2,449)	(2,739)
Comprehensive income	$ 14,134	$ 13,606	$ 38,007	$ 36,855

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SECURITIES

9 Months Ended

Sep. 30, 2013

Investments Debt And Equity Securities [Abstract]

SECURITIES

(3) SECURITIES

The following table summarizes securities held for investment and securities available for sale:

	September 30, 2013
	(Dollars in thousands)
Held for investment, at cost (fair value: $12,328)	$	12,213
Available for sale, at fair value		462,427
Total	$	474,640

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
Mortgage backed securities (1)	$	649	$	52	$	—		$	701
States and political subdivisions		11,564		71		(8	)		11,627
Total	$	12,213	$	123	$	(8	)	$	12,328

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
U.S. treasury and other Federal agencies	$	359,076	$	2,043	$	(215	)	$	360,904
Mortgage backed securities (1)		33,336		620		—			33,956
States and political subdivisions		52,013		1,436		(63	)		53,386
Other securities (2)		12,051		2,270		(140	)		14,181
Total	$	456,476	$	6,369	$	(418	)	$	462,427

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

(2) Primarily consists of equity securities.

The maturities of 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.

	September 30, 2013
	Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	3,636	$	3,655
After one year but within five years		7,364		7,399
After five years but within ten years		945		976
After ten years		268		298
Total	$	12,213	$	12,328
Available for Sale
Contractual maturity of debt securities:
Within one year	$	197,037	$	197,424
After one year but within five years		119,341		120,593
After five years but within ten years		31,322		32,035
After ten years		100,124		101,615
Total debt securities		447,824		451,667
Equity securities		8,652		10,760
Total	$	456,476	$	462,427

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:

	September 30, 2013
	(Dollars in thousands)
Book value of pledged securities	$	393,329

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STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Sep. 30, 2013

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				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
Number of shares repurchased		—		—		40,241		6,787
Average price of shares repurchased	$	—	$	—	$	40.88	$	37.70
Shares remaining to be repurchased		194,723		234,964		194,723		234,964

Required Capital Amounts and Company's Respective Ratios

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

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(Dollars in thousands)
As of September 30, 2013:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	552,380		14.72	%	$	300,282		8.00	%		N/A		N/A
BancFirst		520,453		13.90	%		299,606		8.00	%	$	374,507		10.00	%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	513,521		13.68	%	$	150,141		4.00	%		N/A		N/A
BancFirst		481,594		12.86	%		149,803		4.00	%	$	224,704		6.00	%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	513,521		8.75	%	$	177,802		3.00	%		N/A		N/A
BancFirst		481,594		8.22	%		177,207		3.00	%	$	295,346		5.00	%

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Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013 Business_Unit
Segment Reporting [Abstract]
Number of principal business units	4

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Stockholders' Equity - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Stockholders Equity [Line Items]
Minimum Tier 1 Ratio to be well capitalized	6.00%
Minimum combined Tier 1 and Tier 2 Ratio to be well capitalized	10.00%
Minimum Leverage Ratio to be well capitalized	5.00%
2015 [Member]
Stockholders Equity [Line Items]
Implementation of the deductions and other adjustments to CET1	4 years
Implementation of the deductions and other adjustments to CET1, Percentage	40.00%
2016 [Member]
Stockholders Equity [Line Items]
Implementation of the capital conservation buffer, Percentage	0.625%
Capital conservation buffer implementation phaseout period	4 years
2019 [Member]
Stockholders Equity [Line Items]
Capital Conservation Buffer Maximum Level	2.50%
After 2015 [Member]
Stockholders Equity [Line Items]
Implementation of the deductions and other adjustments to CET1, Additional Percentage	20.00%
Maximum [Member]
Stockholders Equity [Line Items]
Quantitative limit for trust preferred securities to be included in tier 1 capital	$ 10
Minimum [Member] | 2015 [Member]
Stockholders Equity [Line Items]
Minimum ratio of CET1 to risk-weighted assets	4.50%
Tier 1 capital to risk-weighted assets	6.00%
Total capital to risk weighted assets	8.00%
Minimum leverage ratio	4.00%

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SEGMENT INFORMATION

9 Months Ended

Sep. 30, 2013

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:
September 30, 2013
Net interest income (expense)	$	14,043	$	25,613	$	1,491	$	(435	)	$	—		$	40,712
Noninterest income		3,213		12,750		6,864		15,651			(14,826	)		23,652
Income before taxes		9,173		15,229		2,619		8,688			(14,654	)		21,055
September 30, 2012
Net interest income (expense)	$	13,267	$	26,302	$	1,777	$	(514	)	$	—		$	40,832
Noninterest income		2,840		11,153		7,404		14,881			(14,162	)		22,116
Income before taxes		8,302		15,234		3,266		7,463			(14,015	)		20,250
Nine Months Ended:
September 30, 2013
Net interest income (expense)	$	41,997	$	76,181	$	4,786	$	(1,366	)	$	—		$	121,598
Noninterest income		9,519		36,141		19,839		44,192			(41,771	)		67,920
Income before taxes		26,218		43,818		8,014		24,425			(41,481	)		60,994
September 30, 2012
Net interest income (expense)	$	39,784	$	79,317	$	5,211	$	(1,794	)	$	—		$	122,518
Noninterest income		8,193		32,009		23,482		43,507			(41,274	)		65,917
Income before taxes		24,954		45,433		11,664		19,682			(41,017	)		60,716
Total Assets:
September 30, 2013	$	2,031,194	$	3,723,491	$	120,476	$	647,336		$	(595,767	)	$	5,926,730
December 31, 2012		1,996,539		3,801,653		186,473		602,342			(564,757	)		6,022,250
September 30, 2012		1,892,444		3,745,727		126,704		636,853			(564,977	)		5,836,751

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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Stock-Based Compensation - Additional Information (Detail)	9 Months Ended			9 Months Ended
	Sep. 30, 2013 Incentive Stock Option Plan [Member]	May 31, 2013 Incentive Stock Option Plan [Member]	Sep. 30, 2013 Incentive Stock Option Plan [Member] Minimum [Member]	Sep. 30, 2013 Non Employee Directors Stock Option Plan [Member]	Sep. 30, 2012 Non Employee Directors Stock Option Plan [Member]	May 31, 2009 Non Employee Directors Stock Option Plan [Member]	Sep. 30, 2013 Non Employee Directors Stock Option Plan [Member] Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares to be issued under incentive stock option plan		3,000,000				205,000
Shares for future grants	185,860			5,000
Option exercisable rate	25.00%			25.00%
Option exercisable period	4 years			4 years
Options expire period	15 years			15 years
Share based compensation options exercisable period	2020			2017
Stock price percentage to fair value at grant date			100.00%				100.00%
Vesting period in years	7 years			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			The options vest and are exercisable beginning one year from the date of grant at the rate of 25% per year for four years.
Stock option plan termination date	Dec. 31, 2014
Number of options granted for non-employee director					10,000

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Net Income Per Common Share - Basic and Diluted Net Income Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share Reconciliation [Abstract]
Income available to common stockholders	$ 14,491	$ 13,860	$ 40,456	$ 39,594
Income available to common stockholders plus assumed exercises of stock options	$ 14,491	$ 13,860	$ 40,456	$ 39,594
Income available to common stockholders - Shares	15,287,535	15,174,755	15,252,967	15,155,035
Effect of stock options - Shares	307,346	272,639	263,387	276,063
Income available to common stockholders plus assumed exercises of stock options - Shares	15,594,881	15,447,394	15,516,354	15,431,098
Income available to common stockholders - Per Share Amount	$ 0.94	$ 0.91	$ 2.65	$ 2.61
Income available to common stockholders plus assumed exercises of stock options - Per Share Amount	$ 0.93	$ 0.90	$ 2.61	$ 2.57

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Loans and Allowance for Loan Losses - Summary of Nonperforming and Restructured Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Summary Of Nonperforming And Restructured Assets [Abstract]
Past due 90 days or more and still accruing	$ 1,266	$ 537	$ 731
Nonaccrual	15,094	20,549	22,101
Restructured	18,028	17,866	17,784
Total nonperforming and restructured loans	34,388	38,952	40,616
Other real estate owned and repossessed assets	8,428	9,566	9,796
Total nonperforming and restructured assets	$ 42,816	$ 48,518	$ 50,412
Nonperforming and restructured loans to total loans	1.02%	1.20%	1.30%
Nonperforming and restructured assets to total assets	0.72%	0.81%	0.86%

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Notional Amounts and Estimated Fair Values of Outstanding Derivative Positions

The notional amounts and estimated fair values of oil and gas derivative positions outstanding are presented in the following table:

	September 30, 2013
Oil and Natural Gas Swaps and Options	Notional Units	Notional Amount			Estimated Fair Value
	(Notional amounts and dollars in thousands)
Oil
Derivative assets	Barrels		335		$	1,665
Derivative liabilities	Barrels		(335	)		(1,178	)
Natural Gas
Derivative assets	MMBTUs		2,962			1,384
Derivative liabilities	MMBTUs		(2,962	)		(708	)
Total Fair Value	Included in
Derivative assets	Other assets					3,049
Derivative liabilities	Other liabilities					(1,886	)

Recognized Derivative Income Included in Other Noninterest Income

The following table is a summary of the Company’s recognized income related to the activity, which was included in other noninterest income:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands)
Derivative income	$	71	$	205	$	309	$	555

Summary of Company's Net Credit Exposure Relating to Oil and Gas Swaps

The following table is a summary of the Company’s net credit exposure relating to oil and gas swaps and options with bank counterparties:

	September 30, 2013
	(Dollars in thousands)
Credit exposure	$	(149	)

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FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2013

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 September 30, 2013 and 2012, 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)
September 30, 2013
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		340,904		20,000		360,904
Mortgage-backed securities		—		14,455		19,501		33,956
States and political subdivisions		—		53,386		—		53,386
Other securities		—		3,421		10,760		14,181
Derivative assets		—		3,049		—		3,049
Derivative liabilities		—		1,886		—		1,886
Loans held for sale		—		4,934		—		4,934
Mortgage servicing intangibles		—		—		595		595
September 30, 2012
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		413,131		20,000		433,131
Mortgage-backed securities		—		22,390		—		22,390
States and political subdivisions		—		57,829		—		57,829
Other securities		—		—		10,356		10,356
Derivative assets		—		4,175		—		4,175
Derivative liabilities		—		1,868		—		1,868
Loans held for sale		—		13,384		—		13,384
Mortgage servicing intangibles		—		—		844		844

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 nine months ended September 30, 2013 and 2012 were as follows:

	Nine Months Ended
	September 30,
	2013			2012
	(Dollars in thousands)
Balance at the beginning of the year	$	30,779		$	33,225
Purchases, issuances and settlements		20,600			1,897
Sales		(251	)		(5,563	)
Gains included in earnings		182			4,424
Total unrealized losses		(454	)		(2,783	)
Balance at the end of the period	$	50,856		$	31,200

Assets Measured at Fair Value on Nonrecurring Basis

The following table summarizes assets measured at fair value on a nonrecurring basis and the related gains or losses recognized during the period:

	Level 1		Level 2		Level 3		Total Fair Value		Gains (Losses)
	(Dollars in thousands)
Nine Months Ended September 30, 2013
Impaired loans (less specific allowance)		—		—	$	36,286	$	36,286	$	—
Foreclosed assets		—		—		307		307		(9	)
Other real estate owned		—		—		8,121		8,121		(754	)
Nine Months Ended September 30, 2012
Impaired loans (less specific allowance)		—		—	$	43,206	$	43,206	$	—
Foreclosed assets		—		—		237		237		(84	)
Other real estate owned		—		—		9,559		9,559		(1,226	)

Estimated Fair Values of Company's 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:

	September 30,
	2013				2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,826,936	$	1,826,936	$	1,912,614	$	1,912,614
Securities held for investment		12,213		12,328		16,769		17,080
Level 3 inputs:
Loans, net		3,320,079		3,346,578		3,078,838		3,143,799
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		5,309,464		5,338,655		5,253,505		5,275,969
Short-term borrowings		5,074		5,074		5,665		5,665
Long-term borrowings		8,938		8,889		11,255		11,333
Junior subordinated debentures		26,804		28,927		26,804		28,777
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				1,378				1,300
Letters of credit				468				458

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Loans and Allowance for Loan Losses - Transfers from Loans to Other Real Estate Owned and Repossessed Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable Allowance For Credit Loss Additional Information Transfer From Loans To Other Real Estate Owned And Repossessed Assets [Abstract]
Other real estate owned	$ 1,287	$ 1,633
Repossessed assets	946	664
Total	$ 2,233	$ 2,297

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Securities - Maturity of Securities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Estimated Fair Value	$ 12,328
Estimated Fair Value, Total	462,427
Amortized cost, Within one year	3,636
Amortized cost, After one year but within five years	7,364
Amortized cost, After five years but within ten years	945
Amortized cost, After ten years	268
Amortized cost, Total	12,213
Amortized Cost, Within one year	197,037
Amortized Cost, After one year but within five years	119,341
Amortized Cost, After five years but within ten years	31,322
Amortized Cost, After ten years	100,124
Total debt securities	447,824
Amortized Cost, Equity securities	8,652
Amortized Cost, Total	456,476
Held for Investment [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Estimated Fair Value, Within one year	3,655
Estimated Fair Value, After one year but within five years	7,399
Estimated Fair Value, After five years but within ten years	976
Estimated Fair Value, After ten years	298
Estimated Fair Value	12,328
Available for Sale [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Estimated Fair Value, Within one year	197,424
Estimated Fair Value, After one year but within five years	120,593
Estimated Fair Value, After five years but within ten years	32,035
Estimated Fair Value, After ten years	101,615
Total debt securities	451,667
Estimated Fair Value, Equity securities	10,760
Estimated Fair Value, Total	$ 462,427

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Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans Segregated by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	$ 16,535		$ 14,462
90 Days and Greater	7,099		6,468
Total Past Due Loans	23,634		20,930
Current Loans	3,335,304		3,095,166
Total Loans	3,358,938	3,242,427	3,116,096
Accruing Loans 90 Days or More Past Due	1,266	537	731
Non-residential real estate owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	779		915
90 Days and Greater	326		466
Total Past Due Loans	1,105		1,381
Current Loans	458,241		480,319
Total Loans	459,346		481,700
Accruing Loans 90 Days or More Past Due	308		349
Non-residential real estate other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	6,046		646
90 Days and Greater	1,925		1,959
Total Past Due Loans	7,971		2,605
Current Loans	869,531		665,265
Total Loans	877,502		667,870
Accruing Loans 90 Days or More Past Due	51
Residential real estate permanent mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	2,017		2,058
90 Days and Greater	492		399
Total Past Due Loans	2,509		2,457
Current Loans	253,708		242,209
Total Loans	256,217		244,666
Accruing Loans 90 Days or More Past Due	217		12
Residential real estate all other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	1,900		1,635
90 Days and Greater	1,401		771
Total Past Due Loans	3,301		2,406
Current Loans	547,849		490,726
Total Loans	551,150		493,132
Accruing Loans 90 Days or More Past Due	32		86
Non-consumer non-real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	889		4,233
90 Days and Greater	1,013		135
Total Past Due Loans	1,902		4,368
Current Loans	776,576		729,538
Total Loans	778,478		733,906
Accruing Loans 90 Days or More Past Due	138		7
Consumer non-real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	2,179		2,050
90 Days and Greater	194		230
Total Past Due Loans	2,373		2,280
Current Loans	222,122		205,463
Total Loans	224,495		207,743
Accruing Loans 90 Days or More Past Due	187		170
Other loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	1,531		1,706
90 Days and Greater	1,275		1,447
Total Past Due Loans	2,806		3,153
Current Loans	136,060		147,329
Total Loans	138,866		150,482
Accruing Loans 90 Days or More Past Due	236		43
Acquired loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	1,194		1,219
90 Days and Greater	473		1,061
Total Past Due Loans	1,667		2,280
Current Loans	71,217		134,317
Total Loans	72,884		136,597
Accruing Loans 90 Days or More Past Due	$ 97		$ 64

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Stock-Based Compensation - Summary of Activity Under Stock Option Plan (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding [Roll Forward]
Outstanding at ending period - Aggregate Intrinsic Value	$ 24,003
Exercisable at ending period - Aggregate Intrinsic Value	$ 14,763
Outstanding at ending period - Wgtd. Avg. Remaining Contractual Term, years	8 years 8 months 9 days
Exercisable at ending period - Wgtd. Avg. Remaining Contractual Term, years	5 years 6 months 15 days
Outstanding at beginning period - Wgtd. Avg. Exercise Price	$ 31.98
Options granted - Wgtd. Avg. Exercise Price	$ 44.11
Options exercised - Wgtd. Avg. Exercise Price	$ 25.13
Options cancelled, forfeited, or expired - Wgtd. Avg. Exercise Price	$ 43.02
Outstanding at ending period - Wgtd. Avg. Exercise Price	$ 33.26
Exercisable at ending period - Wgtd. Avg. Exercise Price	$ 26.74
Outstanding at beginning period - Options	1,216,981
Options granted	60,000
Options exercised	(118,414)
Options cancelled, forfeited, or expired - Options	(5,000)
Outstanding at ending period - Options	1,153,567
Exercisable at ending period - Options	540,167

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Securities - Summarizes Securities Held for Investment and Securities Available for Sale (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Marketable Securities [Abstract]
Held for investment at fair value	$ 12,328

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Derivative Financial Instruments - Notional Amounts and Estimated Fair Values of Outstanding Derivative Positions (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, Estimated Fair Value	$ 3,049
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, Estimated Fair Value	(1,886)
Oil [Member]
Derivatives, Fair Value [Line Items]
Notional Units	Barrels
Derivative assets, Notional Amount	335
Derivative assets, Estimated Fair Value	1,665
Derivative liabilities, Notional Amount	(335)
Derivative liabilities, Estimated Fair Value	(1,178)
Natural Gas [Member]
Derivatives, Fair Value [Line Items]
Notional Units	MMBTUs
Derivative assets, Notional Amount	2,962
Derivative assets, Estimated Fair Value	1,384
Derivative liabilities, Notional Amount	(2,962)
Derivative liabilities, Estimated Fair Value	$ (708)

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Fair Value Measurements - Estimated Fair Values of Company's Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
FINANCIAL ASSETS
Cash and cash equivalents	$ 1,826,936	$ 1,945,148	$ 1,912,614	$ 1,707,733
Securities held for investment	12,213
Loans, net	3,320,079	3,203,702	3,078,838
FINANCIAL LIABILITIES
Deposits	5,309,464	5,440,830	5,253,505
Short-term borrowings	5,074	4,571	5,665
Long-term borrowings	8,938	9,178	11,255
Junior subordinated debentures	26,804	26,804	26,804
Carrying Amount [Member]
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments
Letters of credit
Carrying Amount [Member] | Level 2 Inputs [Member]
FINANCIAL ASSETS
Cash and cash equivalents	1,826,936		1,912,614
Securities held for investment	12,213		16,769
FINANCIAL LIABILITIES
Deposits	5,309,464		5,253,505
Short-term borrowings	5,074		5,665
Long-term borrowings	8,938		11,255
Junior subordinated debentures	26,804		26,804
Carrying Amount [Member] | Level 3 Inputs [Member]
FINANCIAL ASSETS
Loans, net	3,320,079		3,078,838
Fair Value [Member]
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments	1,378		1,300
Letters of credit	468		458
Fair Value [Member] | Level 2 Inputs [Member]
FINANCIAL ASSETS
Cash and cash equivalents	1,826,936		1,912,614
Securities held for investment	12,328		17,080
FINANCIAL LIABILITIES
Deposits	5,338,655		5,275,969
Short-term borrowings	5,074		5,665
Long-term borrowings	8,889		11,333
Junior subordinated debentures	28,927		28,777
Fair Value [Member] | Level 3 Inputs [Member]
FINANCIAL ASSETS
Loans, net	$ 3,346,578		$ 3,143,799

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Loans and Allowance for Loan Losses - Activity in Alll by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 38,982	$ 37,436	$ 38,725	$ 37,656
Charge-offs	(330)	(500)	(1,210)	(1,563)
Recoveries	219	89	540	511
Net charge-offs	(111)	(411)	(670)	(1,052)
Provisions charged to operations	(12)	233	804	654
Ending Balance	38,859	37,258	38,859	37,258
Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	4,714	5,783	5,104	5,300
Charge-offs	(1)	(30)	(3)	(87)
Recoveries		2	16	2
Net charge-offs	(1)	(28)	13	(85)
Provisions charged to operations	144	(469)	(260)	71
Ending Balance	4,857	5,286	4,857	5,286
Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	10,866	8,566	9,865	8,648
Charge-offs			(19)	(71)
Recoveries	2	15	12	46
Net charge-offs	2	15	(7)	(25)
Provisions charged to operations	404	16	1,414	(26)
Ending Balance	11,272	8,597	11,272	8,597
Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,733	3,002	2,781	2,734
Charge-offs	(30)	(50)	(126)	(119)
Recoveries	12	4	27	84
Net charge-offs	(18)	(46)	(99)	(35)
Provisions charged to operations	7	(258)	40	(1)
Ending Balance	2,722	2,698	2,722	2,698
Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	7,349	7,004	7,034	7,030
Charge-offs	(23)	(107)	(177)	(169)
Recoveries	3	5	30	34
Net charge-offs	(20)	(102)	(147)	(135)
Provisions charged to operations	(722)	121	(280)	128
Ending Balance	6,607	7,023	6,607	7,023
Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	8,751	8,558	9,385	9,156
Charge-offs	(34)	(119)	(139)	(449)
Recoveries	110	19	159	144
Net charge-offs	76	(100)	20	(305)
Provisions charged to operations	36	712	(542)	319
Ending Balance	8,863	9,170	8,863	9,170
Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,389	2,282	2,451	2,315
Charge-offs	(163)	(117)	(458)	(308)
Recoveries	65	42	202	157
Net charge-offs	(98)	(75)	(256)	(151)
Provisions charged to operations	207	162	303	205
Ending Balance	2,498	2,369	2,498	2,369
Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,961	1,854	1,885	1,886
Charge-offs	(76)	(24)	(235)	(231)
Recoveries	24	2	55	33
Net charge-offs	(52)	(22)	(180)	(198)
Provisions charged to operations	36	6	240	150
Ending Balance	1,945	1,838	1,945	1,838
Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	219	387	220	587
Charge-offs	(3)	(53)	(53)	(129)
Recoveries	3		39	11
Net charge-offs		(53)	(14)	(118)
Provisions charged to operations	(124)	(57)	(111)	(192)
Ending Balance	$ 95	$ 277	$ 95	$ 277

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NET INCOME PER COMMON SHARE (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Basic and Diluted Net Income Per Common Share

Basic and diluted net income per common share are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended September 30, 2013
Basic
Income available to common stockholders	$	14,491		15,287,535	$	0.94
Effect of stock options		—		307,346
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	14,491		15,594,881	$	0.93
Three Months Ended September 30, 2012
Basic
Income available to common stockholders	$	13,860		15,174,755	$	0.91
Effect of stock options		—		272,639
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	13,860		15,447,394	$	0.90
Nine Months Ended September 30, 2013
Basic
Income available to common stockholders	$	40,456		15,252,967	$	2.65
Effect of stock options		—		263,387
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	40,456		15,516,354	$	2.61
Nine Months Ended September 30, 2012
Basic
Income available to common stockholders	$	39,594		15,155,035	$	2.61
Effect of stock options		—		276,063
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	39,594		15,431,098	$	2.57

Average Exercise Price of Options Excluded from Computation of Diluted Net Income Per Common Share

The following table shows the number and average exercise price of options that were excluded from the computation of diluted net income per common share for each period because the options’ exercise prices were greater than the average market price of the common shares:

	Shares		Average Exercise Price
Three Months Ended September 30, 2013		3,804	$	50.74
Three Months Ended September 30, 2012		479,000		39.21
Nine Months Ended September 30, 2013		330,165		40.09
Nine Months Ended September 30, 2012		597,200		38.66

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $) In Thousands	Total	COMMON STOCK [Member]	CAPITAL SURPLUS [Member]	RETAINED EARNINGS [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME [Member]
Balance at beginning of period at Dec. 31, 2011		$ 15,118	$ 77,462	$ 381,017	$ 9,444
Shares issued		89	1,470
Net income	39,594			39,594
Net change	(2,739)				(2,739)
Tax effect of stock options			629
Dividends on common stock				(12,630)
Stock-based compensation arrangements			1,189
Shares acquired and canceled		(7)		(249)
Balance at end of period at Sep. 30, 2012	510,387	15,200	80,750	407,732	6,705
Balance at beginning of period at Jun. 30, 2012		15,154	79,181	398,267	6,959
Shares issued		46	748
Net income	13,860			13,860
Net change	(254)				(254)
Tax effect of stock options			430
Dividends on common stock				(4,395)
Stock-based compensation arrangements			391
Balance at end of period at Sep. 30, 2012	510,387	15,200	80,750	407,732	6,705
Balance at beginning of period at Dec. 31, 2012	519,567	15,242	82,401	415,607	6,317
Shares issued		122	2,745
Net income	40,456			40,456
Net change	(2,449)				(2,449)
Tax effect of stock options			727
Dividends on common stock				(13,579)
Stock-based compensation arrangements			1,094
Shares acquired and canceled		(66)		(2,644)
Balance at end of period at Sep. 30, 2013	545,973	15,298	86,967	439,840	3,868
Balance at beginning of period at Jun. 30, 2013		15,256	84,360	431,120	4,225
Shares issued		63	1,717
Net income	14,491			14,491
Net change	(357)				(357)
Tax effect of stock options			491
Dividends on common stock				(4,746)
Stock-based compensation arrangements			399
Shares acquired and canceled		(21)		(1,025)
Balance at end of period at Sep. 30, 2013	$ 545,973	$ 15,298	$ 86,967	$ 439,840	$ 3,868

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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2013

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 State of America 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, 2012.

Basis of Presentation

The accompanying unaudited interim consolidated financial statements include the accounts of BancFirst Corporation, Council Oak Partners, LLC, BancFirst Insurance Services, Inc., and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BancFirst Agency, Inc. and BancFirst Community Development Corporation. 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, 2012, should be referred to in connection with these unaudited interim consolidated financial statements.

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, 2012, the date of the most recent annual report.

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.

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.

Recent Accounting Pronouncements

In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220).” ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2012. Adoption of ASU 2013-02 did not have a significant effect on the Company’s financial statements.

In July 2012, the FASB issued ASU No. 2012-02, “Intangibles (Topic 350)—Goodwill and Other.” ASU 2012-02 simplifies the impairment test for indefinite-lived intangible assets other than goodwill. The new guidance gives the option to first assess qualitative factors to determine if it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform a quantitative valuation test. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after September 15, 2012. Adoption of ASU 2012-02 did not have a significant effect on the Company’s financial statements.

In November 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210)—Disclosure about Offsetting Assets and Liabilities.” ASU 2011-11 is an amendment to require an entity to disclose both net and gross information about offsetting assets and liabilities to enable users of its financial statements to understand the effect of those arrangements. Arrangements include derivatives, sale and repurchase agreements and transactions, securities borrowing and securities lending arrangements. ASU 2011-11 was effective for annual and interim periods beginning on January 1, 2013 and did not have a significant effect on the Company’s financial statements.

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LOANS AND ALLOWANCE FOR LOAN LOSSES

9 Months Ended

Sep. 30, 2013

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:

	September 30, 2013					December 31, 2012					September 30, 2012
	Amount		Percent			Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and industrial	$	566,670		16.87	%	$	559,274		17.25	%	$	541,130		17.37	%
Oil & gas production & equipment		139,605		4.16			154,380		4.76			131,642		4.22
Agriculture		89,258		2.66			93,274		2.88			83,146		2.67
State and political subdivisions:
Taxable		10,248		0.31			9,412		0.29			7,786		0.25
Tax-exempt		12,232		0.36			13,194		0.41			13,749		0.44
Real estate:
Construction		283,468		8.44			226,102		6.97			211,505		6.79
Farmland		133,397		3.97			125,033		3.86			114,043		3.66
One to four family residences		696,651		20.74			669,230		20.64			674,457		21.64
Multifamily residential properties		57,825		1.72			50,721		1.56			50,659		1.63
Commercial		1,100,544		32.76			1,068,445		32.95			1,026,097		32.93
Consumer		248,025		7.38			253,002		7.80			241,864		7.76
Other (not classified above)		21,015		0.63			20,360		0.63			20,018		0.64
Total loans	$	3,358,938		100.00	%	$	3,242,427		100.00	%	$	3,116,096		100.00	%
Loans held for sale (included above)	$	4,934				$	11,257				$	13,384

The Company’s loans are mostly to customers within Oklahoma and over 60% of the loans are secured by real estate. Credit risk on loans is managed through limits on amounts loaned to individual 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.

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, 2012.

Nonperforming and Restructured Assets

Nonaccrual loans, accruing loans past due 90 days or more, and restructured loans are shown in the table below. Had nonaccrual loans performed in accordance with their original contractual terms, the Company would have recognized additional interest income of approximately $1.3 million for the nine months ended September 30, 2013 and approximately $1.0 million for the nine months ended September 30, 2012.

At September 30, 2013 and 2012, restructured loans consisted primarily of one loan restructured to defer principal payments. The loan was evaluated by management and determined to be well collateralized. Additionally, none of the concessions granted involved a principal reduction or a change from the current market rate of interest. The collateral value will be monitored periodically to evaluate possible impairment. 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 restructured were not considered to be material.

The following is a summary of nonperforming and restructured assets:

	September 30,			December 31,			September 30,
	2013			2012			2012
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	1,266		$	537		$	731
Nonaccrual		15,094			20,549			22,101
Restructured		18,028			17,866			17,784
Total nonperforming and restructured loans		34,388			38,952			40,616
Other real estate owned and repossessed assets		8,428			9,566			9,796
Total nonperforming and restructured assets	$	42,816		$	48,518		$	50,412
Nonperforming and restructured loans to total loans		1.02	%		1.20	%		1.30	%
Nonperforming and restructured assets to total assets		0.72	%		0.81	%		0.86	%

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.

	September 30, 2013		September 30, 2012
	(Dollars in thousands)
Non-residential real estate owner occupied	$	551	$	5,605
Non-residential real estate other		6,784		3,719
Residential real estate permanent mortgage		714		585
Residential real estate all other		1,865		3,594
Non-consumer non-real estate		1,280		2,527
Consumer non-real estate		124		138
Other loans		1,446		2,221
Acquired loans		2,330		3,712
Total	$	15,094	$	22,101

The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-89 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 September 30, 2013
Non-residential real estate owner occupied	$	779	$	326	$	1,105	$	458,241	$	459,346	$	308
Non-residential real estate other		6,046		1,925		7,971		869,531		877,502		51
Residential real estate permanent mortgage		2,017		492		2,509		253,708		256,217		217
Residential real estate all other		1,900		1,401		3,301		547,849		551,150		32
Non-consumer non-real estate		889		1,013		1,902		776,576		778,478		138
Consumer non-real estate		2,179		194		2,373		222,122		224,495		187
Other loans		1,531		1,275		2,806		136,060		138,866		236
Acquired loans		1,194		473		1,667		71,217		72,884		97
Total	$	16,535	$	7,099	$	23,634	$	3,335,304	$	3,358,938	$	1,266
As of September 30, 2012
Non-residential real estate owner occupied	$	915	$	466	$	1,381	$	480,319	$	481,700	$	349
Non-residential real estate other		646		1,959		2,605		665,265		667,870		—
Residential real estate permanent mortgage		2,058		399		2,457		242,209		244,666		12
Residential real estate all other		1,635		771		2,406		490,726		493,132		86
Non-consumer non-real estate		4,233		135		4,368		729,538		733,906		7
Consumer non-real estate		2,050		230		2,280		205,463		207,743		170
Other loans		1,706		1,447		3,153		147,329		150,482		43
Acquired loans		1,219		1,061		2,280		134,317		136,597		64
Total	$	14,462	$	6,468	$	20,930	$	3,095,166	$	3,116,096	$	731

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. 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 September 30, 2013
Non-residential real estate owner occupied	$	993	$	924	$	34	$	700
Non-residential real estate other		25,724		24,216		2,240		25,871
Residential real estate permanent mortgage		1,263		1,068		57		1,298
Residential real estate all other		2,423		2,020		381		3,668
Non-consumer non-real estate		1,931		1,599		396		1,508
Consumer non-real estate		413		394		67		444
Other loans		1,905		1,782		300		1,911
Acquired loans		9,879		7,853		95		8,109
Total	$	44,531	$	39,856	$	3,570	$	43,509
As of September 30, 2012
Non-residential real estate owner occupied	$	7,058	$	6,094	$	232	$	6,237
Non-residential real estate other		20,535		20,340		1,581		20,496
Residential real estate permanent mortgage		1,299		1,089		30		1,184
Residential real estate all other		4,365		4,047		1,344		4,149
Non-consumer non-real estate		3,144		2,539		677		1,745
Consumer non-real estate		447		424		77		364
Other loans		2,420		2,265		264		1,975
Acquired loans		12,872		10,684		71		11,451
Total	$	52,140	$	47,482	$	4,276	$	47,601

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, 2012.

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 September 30, 2013
Non-residential real estate owner occupied	$	388,923	$	64,418	$	5,189	$	816	$	—	$	459,346
Non-residential real estate other		714,670		134,760		21,237		6,835		—		877,502
Residential real estate permanent mortgage		224,518		25,091		5,574		1,034		—		256,217
Residential real estate all other		457,649		82,827		8,721		1,953		—		551,150
Non-consumer non-real estate		681,695		91,108		4,254		1,421		—		778,478
Consumer non-real estate		210,285		11,760		2,047		403		—		224,495
Other loans		135,169		2,646		738		313		—		138,866
Acquired loans		53,364		12,707		4,207		2,606		—		72,884
Total	$	2,866,273	$	425,317	$	51,967	$	15,381	$	—	$	3,358,938
As of September 30, 2012
Non-residential real estate owner occupied	$	420,426	$	49,131	$	6,189	$	5,954	$	—	$	481,700
Non-residential real estate other		564,180		78,637		21,334		3,719		—		667,870
Residential real estate permanent mortgage		206,702		31,558		5,547		859		—		244,666
Residential real estate all other		429,862		50,412		9,120		3,738		—		493,132
Non-consumer non-real estate		644,066		80,863		6,500		2,477		—		733,906
Consumer non-real estate		195,242		10,185		1,965		349		2		207,743
Other loans		146,037		2,726		887		832		—		150,482
Acquired loans		103,411		24,243		5,006		3,898		39		136,597
Total	$	2,709,926	$	327,755	$	56,548	$	21,826	$	41	$	3,116,096

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, 2012.

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 class of loans does not preclude its availability to absorb losses in other classes.

	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 September 30, 2013
Non-residential real estate owner occupied	$	4,714	$	(1	)	$	—	$	(1	)	$	144		$	4,857
Non-residential real estate other		10,866		—			2		2			404			11,272
Residential real estate permanent mortgage		2,733		(30	)		12		(18	)		7			2,722
Residential real estate all other		7,349		(23	)		3		(20	)		(722	)		6,607
Non-consumer non-real estate		8,751		(34	)		110		76			36			8,863
Consumer non-real estate		2,389		(163	)		65		(98	)		207			2,498
Other loans		1,961		(76	)		24		(52	)		36			1,945
Acquired loans		219		(3	)		3		—			(124	)		95
Total	$	38,982	$	(330	)	$	219	$	(111	)	$	(12	)	$	38,859
Nine Months Ended September 30, 2013
Non-residential real estate owner occupied	$	5,104	$	(3	)	$	16	$	13		$	(260	)	$	4,857
Non-residential real estate other		9,865		(19	)		12		(7	)		1,414			11,272
Residential real estate permanent mortgage		2,781		(126	)		27		(99	)		40			2,722
Residential real estate all other		7,034		(177	)		30		(147	)		(280	)		6,607
Non-consumer non-real estate		9,385		(139	)		159		20			(542	)		8,863
Consumer non-real estate		2,451		(458	)		202		(256	)		303			2,498
Other loans		1,885		(235	)		55		(180	)		240			1,945
Acquired loans		220		(53	)		39		(14	)		(111	)		95
Total	$	38,725	$	(1,210	)	$	540	$	(670	)	$	804		$	38,859

	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 September 30, 2012
Non-residential real estate owner occupied	$	5,783	$	(30	)	$	2	$	(28	)	$	(469	)	$	5,286
Non-residential real estate other		8,566		—			15		15			16			8,597
Residential real estate permanent mortgage		3,002		(50	)		4		(46	)		(258	)		2,698
Residential real estate all other		7,004		(107	)		5		(102	)		121			7,023
Non-consumer non-real estate		8,558		(119	)		19		(100	)		712			9,170
Consumer non-real estate		2,282		(117	)		42		(75	)		162			2,369
Other loans		1,854		(24	)		2		(22	)		6			1,838
Acquired loans		387		(53	)		—		(53	)		(57	)		277
Total	$	37,436	$	(500	)	$	89	$	(411	)	$	233		$	37,258
Nine Months Ended September 30, 2012
Non-residential real estate owner occupied	$	5,300	$	(87	)	$	2	$	(85	)	$	71		$	5,286
Non-residential real estate other		8,648		(71	)		46		(25	)		(26	)		8,597
Residential real estate permanent mortgage		2,734		(119	)		84		(35	)		(1	)		2,698
Residential real estate all other		7,030		(169	)		34		(135	)		128			7,023
Non-consumer non-real estate		9,156		(449	)		144		(305	)		319			9,170
Consumer non-real estate		2,315		(308	)		157		(151	)		205			2,369
Other loans		1,886		(231	)		33		(198	)		150			1,838
Acquired loans		587		(129	)		11		(118	)		(192	)		277
Total	$	37,656	$	(1,563	)	$	511	$	(1,052	)	$	654		$	37,258

The following table details the amount of ALL by class of loans based on the impairment methodology used by the Company.

	ALL
	September 30, 2013				September 30, 2012
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Non-residential real estate owner occupied	$	228	$	4,629	$	462	$	4,824
Non-residential real estate other		2,529		8,743		1,934		6,663
Residential real estate permanent mortgage		226		2,496		218		2,480
Residential real estate all other		1,058		5,549		2,087		4,936
Non-consumer non-real estate		1,052		7,811		1,692		7,478
Consumer non-real estate		314		2,184		315		2,054
Other loans		2460		1,6998		220		1,6188
Acquired loans		—		957		—		2777
Total	$	5,653	$	33,206	$	6,928	$	30,330

The following table details the loans outstanding by class of loans based on the impairment methodology used by the Company.

	Loans
	September 30, 2013						September 30, 2012
	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)
Non-residential real estate owner occupied	$	6,005	$	453,341	$	—	$	12,142	$	469,558	$	—
Non-residential real estate other		28,072		849,430		—		25,053		642,817		—
Residential real estate permanent mortgage		6,609		249,609		—		6,406		238,260		—
Residential real estate all other		10,674		540,476		—		12,858		480,274		—
Non-consumer non-real estate		5,675		772,803		—		8,976		724,930		—
Consumer non-real estate		2,448		222,045		—		2,316		205,427		—
Other loans		292		138,575		—		264		150,218		—
Acquired loans		—		66,071		6,813		—		127,654		8,943
Total	$	59,775	$	3,292,350	$	6,813	$	68,015	$	3,039,138	$	8,943

Transfers from Loans

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

	Nine Months Ended September 30,
	2013		2012
	(Dollars in thousands)
Other real estate owned	$	1,287	$	1,633
Repossessed assets		946		664
Total	$	2,233	$	2,297

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RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

On January 19, 2012, Council Oak Investment Corporation, a wholly-owned subsidiary of BancFirst, completed the sale of one of its investments that resulted in a pretax gain of approximately $4.5 million. After related expenses and income taxes, the increase in net income approximated $2.6 million. The gain was included in first quarter 2012 earnings.

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Loans and Allowance for Loan Losses - Impaired Loans Segregated by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 44,531	$ 52,140
Recorded Investment with Allowance	39,856	47,482
Related Allowance	3,570	4,276
Average Recorded Investment	43,509	47,601
Non-residential real estate owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	993	7,058
Recorded Investment with Allowance	924	6,094
Related Allowance	34	232
Average Recorded Investment	700	6,237
Non-residential real estate other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	25,724	20,535
Recorded Investment with Allowance	24,216	20,340
Related Allowance	2,240	1,581
Average Recorded Investment	25,871	20,496
Residential real estate permanent mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,263	1,299
Recorded Investment with Allowance	1,068	1,089
Related Allowance	57	30
Average Recorded Investment	1,298	1,184
Residential real estate all other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	2,423	4,365
Recorded Investment with Allowance	2,020	4,047
Related Allowance	381	1,344
Average Recorded Investment	3,668	4,149
Non-consumer non-real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,931	3,144
Recorded Investment with Allowance	1,599	2,539
Related Allowance	396	677
Average Recorded Investment	1,508	1,745
Consumer non-real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	413	447
Recorded Investment with Allowance	394	424
Related Allowance	67	77
Average Recorded Investment	444	364
Other loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,905	2,420
Recorded Investment with Allowance	1,782	2,265
Related Allowance	300	264
Average Recorded Investment	1,911	1,975
Acquired loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	9,879	12,872
Recorded Investment with Allowance	7,853	10,684
Related Allowance	95	71
Average Recorded Investment	$ 8,109	$ 11,451

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SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2013

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:
September 30, 2013
Net interest income (expense)	$	14,043	$	25,613	$	1,491	$	(435	)	$	—		$	40,712
Noninterest income		3,213		12,750		6,864		15,651			(14,826	)		23,652
Income before taxes		9,173		15,229		2,619		8,688			(14,654	)		21,055
September 30, 2012
Net interest income (expense)	$	13,267	$	26,302	$	1,777	$	(514	)	$	—		$	40,832
Noninterest income		2,840		11,153		7,404		14,881			(14,162	)		22,116
Income before taxes		8,302		15,234		3,266		7,463			(14,015	)		20,250
Nine Months Ended:
September 30, 2013
Net interest income (expense)	$	41,997	$	76,181	$	4,786	$	(1,366	)	$	—		$	121,598
Noninterest income		9,519		36,141		19,839		44,192			(41,771	)		67,920
Income before taxes		26,218		43,818		8,014		24,425			(41,481	)		60,994
September 30, 2012
Net interest income (expense)	$	39,784	$	79,317	$	5,211	$	(1,794	)	$	—		$	122,518
Noninterest income		8,193		32,009		23,482		43,507			(41,274	)		65,917
Income before taxes		24,954		45,433		11,664		19,682			(41,017	)		60,716
Total Assets:
September 30, 2013	$	2,031,194	$	3,723,491	$	120,476	$	647,336		$	(595,767	)	$	5,926,730
December 31, 2012		1,996,539		3,801,653		186,473		602,342			(564,757	)		6,022,250
September 30, 2012		1,892,444		3,745,727		126,704		636,853			(564,977	)		5,836,751

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Securities - Summarizes Amortized Cost and Estimated Fair Values of Securities Held for Investment (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 12,213
Gross Unrealized Gains	123
Gross Unrealized Losses	(8)
Estimated Fair Value	12,328
Mortgage backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	649
Gross Unrealized Gains	52
Gross Unrealized Losses
Estimated Fair Value	701
States and political subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	11,564
Gross Unrealized Gains	71
Gross Unrealized Losses	(8)
Estimated Fair Value	$ 11,627

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Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013 SecurityLoan	Sep. 30, 2012
Receivables [Abstract]
Percentage of loans secured by real estate	60.00%
Interest income recognized	$ 1,300,000	$ 1,000,000
Troubled debt restructuring principal deferral	1
Interest income on impaired loans	$ 0	$ 0

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Stockholders' Equity - Required Capital Amounts and Company's Respective Ratios (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital Required To Be Well Capitalized To Average assets Ratio	5.00%
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	6.00%
BancFirst Corporation [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital Amount	$ 513,521
Tier 1 Capital To Average Assets Ratio	8.75%
Tier 1 Capital Required For Capital Adequacy Amount	177,802
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio	3.00%
Tier 1 Risk Based Capital Amount	513,521
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	13.68%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	150,141
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	4.00%
Total Capital To Risk Weighted Assets Actual Amount	552,380
Total Capital To Risk Weighted Assets Actual Ratio	14.72%
Capital Required For Capital Adequacy Amount	300,282
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	8.00%
BancFirst [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital Amount	481,594
Tier 1 Capital To Average Assets Ratio	8.22%
Tier 1 Capital Required For Capital Adequacy Amount	177,207
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio	3.00%
Tier 1 Capital Required To Be Well Capitalized Amount	295,346
Tier 1 Capital Required To Be Well Capitalized To Average assets Ratio	5.00%
Tier 1 Risk Based Capital Amount	481,594
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	12.86%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	149,803
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	4.00%
Tier 1 Risk Based Capital Required To Be well Capitalized Amount	224,704
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	6.00%
Total Capital To Risk Weighted Assets Actual Amount	520,453
Total Capital To Risk Weighted Assets Actual Ratio	13.90%
Capital Required For Capital Adequacy Amount	299,606
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	8.00%
Capital Required To Be Well Capitalized Amount	$ 374,507
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	10.00%

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Stock-Based Compensation - Options Granted and Options Exercised Under Stock Option Plan (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Weighted average grant-date fair value per share of options granted	$ 10.63		$ 9.05
Total intrinsic value of options exercised	$ 1,424	$ 1,152	$ 2,653	$ 2,180
Cash received from options exercised	1,775	794	2,976	1,516
Tax benefit realized from options exercised	$ 551	$ 446	$ 1,026	$ 843

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Loans and Allowance for Loan Losses - Loans Outstanding by Impairment Methodology (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	$ 59,775	$ 68,015
Collectively evaluated for impairment	3,292,350	3,039,138
Loans Loans acquired with deteriorated credit quality	6,813	8,943
Non-residential real estate owner occupied [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	6,005	12,142
Collectively evaluated for impairment	453,341	469,558
Non-residential real estate other [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	28,072	25,053
Collectively evaluated for impairment	849,430	642,817
Residential real estate permanent mortgage [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	6,609	6,406
Collectively evaluated for impairment	249,609	238,260
Residential real estate all other [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	10,674	12,858
Collectively evaluated for impairment	540,476	480,274
Non-consumer non-real estate [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	5,675	8,976
Collectively evaluated for impairment	772,803	724,930
Consumer non-real estate [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	2,448	2,316
Collectively evaluated for impairment	222,045	205,427
Other loans [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment	292	264
Collectively evaluated for impairment	138,575	150,218
Acquired loans [Member]
Financial Receivables Impaired Or Restructured [Line Items]
Individually evaluated for impairment
Collectively evaluated for impairment	66,071	127,654
Loans Loans acquired with deteriorated credit quality	$ 6,813	$ 8,943

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Securities, fair value	$ 474,755	$ 562,815	$ 540,786
Common stock, par value	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized	20,000,000	20,000,000	20,000,000
Common stock, shares issued	15,298,035	15,242,308	15,200,468
Common stock, shares outstanding	15,298,035	15,242,308	15,200,468
Accumulated other comprehensive income, tax	$ 2,083	$ 3,400	$ 3,609
Senior preferred stock [Member]
Preferred stock, par value	$ 1.00	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000	10,000,000
Preferred stock, shares issued
Cumulative preferred stock [Member]
Preferred stock, par value	$ 5.00	$ 5.00	$ 5.00
Preferred stock, shares authorized	900,000	900,000	900,000
Preferred stock, shares issued

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STOCKHOLDERS' EQUITY

9 Months Ended

Sep. 30, 2013

Equity [Abstract]

STOCKHOLDERS' EQUITY

(7) 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				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
Number of shares repurchased		—		—		40,241		6,787
Average price of shares repurchased	$	—	$	—	$	40.88	$	37.70
Shares remaining to be repurchased		194,723		234,964		194,723		234,964

The Company and BancFirst are subject to risk-based capital guidelines issued by the Board of Governors of the Federal Reserve System and the 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 September 30, 2013 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:

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(Dollars in thousands)
As of September 30, 2013:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	552,380		14.72	%	$	300,282		8.00	%		N/A		N/A
BancFirst		520,453		13.90	%		299,606		8.00	%	$	374,507		10.00	%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	513,521		13.68	%	$	150,141		4.00	%		N/A		N/A
BancFirst		481,594		12.86	%		149,803		4.00	%	$	224,704		6.00	%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	513,521		8.75	%	$	177,802		3.00	%		N/A		N/A
BancFirst		481,594		8.22	%		177,207		3.00	%	$	295,346		5.00	%

As of September 30, 2013, BancFirst was considered to be “well capitalized” and there are no conditions or events since the most recent notification of BancFirst’s capital category that management believes would materially change its category under capital requirements existing as of the report date. To be well capitalized under Federal bank regulatory agency definitions, a depository institution must have a Tier 1 Ratio of at least 6%, a combined Tier 1 and Tier 2 Ratio of at least 10%, and a Leverage Ratio of at least 5%. The Company’s trust preferred securities have continued to be included in Tier 1 capital as the Company’s total assets do not exceed $10 billion.

Basel III Capital Rules

In July 2013, the three Federal bank regulatory agencies jointly published interim final rules (the “Basel III Capital Rules”) establishing a new comprehensive capital framework for U.S. banking organizations. The rules implement the Basel Committee’s December 2010 framework known as “Basel III” for strengthening international capital standards as well as certain provisions of the Dodd-Frank Act. These Rules substantially revise the risk-based capital requirements applicable to bank holding companies and depository institutions, compared to the current U.S. risk-based capital rules. The Basel III Capital Rules define the components of capital and address other issues affecting the numerator in banking institutions’ regulatory capital ratios. These Rules also address risk weights and other issues affecting the denominator in banking institutions’ regulatory capital ratios and replace the existing risk-weighting approach with a more risk-sensitive approach. The Basel III Capital Rules also implement the requirements of Section 939A of the Dodd-Frank Act to remove references to credit ratings from the federal banking agencies’ rules. The Basel III Capital Rules are effective for the Company and BancFirst on January 1, 2015 (subject to a 4-year phase-in period).

The Basel III Capital Rules, among other things, (i) introduce a new capital measure called “Common Equity Tier 1” (“CET1”), (ii) specify that Tier 1 capital consist of CET1 and “Additional Tier 1 capital” instruments meeting specified requirements, (iii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital, and (iv) expand the scope of the deductions/adjustments as compared to existing regulations.

Under the Basel III Capital Rules, the initial minimum capital ratios as of January 1, 2015 will be as follows:

4.5% CET1 to risk-weighted assets.

6.0% Tier 1 capital to risk-weighted assets.

8.0% Total capital to risk-weighted assets.

4.0% Minimum leverage ratio

Implementation of the deductions and other adjustments to CET1 will begin on January 1, 2015 and will be phased-in over a 4-year period (beginning at 40% on January 1, 2015 and an additional 20% per year thereafter). Under the new rule, 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 will begin on January 1, 2016 at the 0.625% level and be phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reaches 2.5% on January 1, 2019).

Management believes that, as of September 30, 2013, the Company and BancFirst would meet all capital adequacy requirements under the Basel III Capital Rules on a fully phased-in basis as if such requirements were currently in effect.

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Unrealized losses on securities, net of tax	$ 186	$ 44	$ 1,269	$ 654
Reclassification adjustment for gains, tax	6	93	48	821
Other comprehensive loss, tax	$ 192	$ 137	$ 1,317	$ 1,475

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Net Income Per Common Share - Average Exercise Prices of Options Excluded from Computation of Diluted Net Income Per Common Share (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Abstract]
Shares	3,804	479,000	330,165	597,200
Average Exercise Price	$ 50.74	$ 39.21	$ 40.09	$ 38.66

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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
ASSETS
Cash and due from banks	$ 204,317	$ 213,103	$ 139,004
Interest-bearing deposits with banks	1,622,619	1,732,045	1,773,610
Federal funds sold		700
Securities (fair value: $474,755, $562,815, and $540,786, respectively)	474,640	562,542	540,475
Loans:
Total loans (net of unearned interest)	3,358,938	3,242,427	3,116,096
Allowance for loan losses	(38,859)	(38,725)	(37,258)
Loans, net	3,320,079	3,203,702	3,078,838
Premises and equipment, net	118,176	115,503	113,812
Other real estate owned	8,121	9,227	9,559
Intangible assets, net	10,633	12,083	12,630
Goodwill	44,545	44,545	44,545
Accrued interest receivable and other assets	123,600	128,800	124,278
Total assets	5,926,730	6,022,250	5,836,751
Deposits:
Noninterest-bearing	2,022,388	2,016,832	1,927,387
Interest-bearing	3,287,076	3,423,998	3,326,118
Total deposits	5,309,464	5,440,830	5,253,505
Short-term borrowings	5,074	4,571	5,665
Long-term borrowings	8,938	9,178	11,255
Accrued interest payable and other liabilities	30,477	21,300	29,135
Junior subordinated debentures	26,804	26,804	26,804
Total liabilities	5,380,757	5,502,683	5,326,364
Commitments and contingent liabilities
Stockholders' equity:
Common stock, $1.00 par, 20,000,000 shares authorized; shares issued and outstanding: 15,298,035, 15,242,308 and 15,200,468, respectively	15,298	15,242	15,200
Capital surplus	86,967	82,401	80,750
Retained earnings	439,840	415,607	407,732
Accumulated other comprehensive income, net of income tax of $2,083, $3,400 and $3,609, respectively	3,868	6,317	6,705
Total stockholders' equity	545,973	519,567	510,387
Total liabilities and stockholders' equity	5,926,730	6,022,250	5,836,751
Senior preferred stock [Member]
Stockholders' equity:
preferred stock, value
Cumulative preferred stock [Member]
Stockholders' equity:
preferred stock, value

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Stock-Based Compensation - Stock-Based Employee Compensation Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Labor And Related Expense [Abstract]
Stock-based compensation expense	$ 399	$ 391	$ 1,094	$ 1,189
Tax benefit	(154)	(151)	(423)	(460)
Stock-based compensation expense, net of tax	$ 245	$ 240	$ 671	$ 729

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Recent Developments Including Mergers and Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Jan. 31, 2012
Recent Developments Including Mergers And Acquisitions [Abstract]
Pretax gain on sale of investments	$ 4.5
Gain on sale of investments, Net of tax	$ 2.6

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STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2013

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:

	Options			Wgtd. Avg. Exercise Price		Wgtd. Avg. Remaining Contractual Term			Aggregate Intrinsic Value
	(Dollars in thousands, except per share data)
Nine Months Ended September 30, 2013
Outstanding at December 31, 2012		1,216,981		$	31.98
Options granted		60,000			44.11
Options exercised		(118,414	)		25.13
Options canceled, forfeited or expired		(5,000	)		43.02
Outstanding at September 30, 2013		1,153,567			33.26		8.69	Yrs	$	24,003
Exercisable at September 30, 2013		540,167			26.74		5.54	Yrs	$	14,763

Options Granted and Options Exercised Under Stock Option Plan

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands, except per share data)
Weighted average grant-date fair value per share of options granted	$	10.63	$	—	$	9.05	$	—
Total intrinsic value of options exercised		1,424		1,152		2,653		2,180
Cash received from options exercised		1,775		794		2,976		1,516
Tax benefit realized from options exercised		551		446		1,026		843

Stock-based Employee Compensation Expense

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
	(Dollars in thousands)
Stock-based compensation expense	$	399		$	391		$	1,094		$	1,189
Tax benefit		(154	)		(151	)		(423	)		(460	)
Stock-based compensation expense, net of tax	$	245		$	240		$	671		$	729

Remaining Fair Value of Stock Options

The following table shows the remaining fair value of stock options:

	September 30, 2013
	(Dollars in thousands)
Fair value of stock options	$	4,902

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:

	Nine Months Ended September 30,
	2013			2012
Risk-free interest rate		2.70	%		1.74	%
Dividend yield		2.00	%		2.00	%
Stock price volatility		18.35	%		32.88	%
Expected term		10	Yrs		10	Yrs

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Loans and Allowance for Loan Losses - Allowance for Loan Losses Outstanding by Impairment Methodology (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	$ 5,653	$ 6,928
Collectively evaluated for impairment	33,206	30,330
Non-residential real estate owner occupied [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	228	462
Collectively evaluated for impairment	4,629	4,824
Non-residential real estate other [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	2,529	1,934
Collectively evaluated for impairment	8,743	6,663
Residential real estate permanent mortgage [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	226	218
Collectively evaluated for impairment	2,496	2,480
Residential real estate all other [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	1,058	2,087
Collectively evaluated for impairment	5,549	4,936
Non-consumer non-real estate [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	1,052	1,692
Collectively evaluated for impairment	7,811	7,478
Consumer non-real estate [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	314	315
Collectively evaluated for impairment	2,184	2,054
Other loans [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment	2,460	220
Collectively evaluated for impairment	16,998	16,188
Acquired loans [Member]
Allowance For Credit Losses And Finance Receivables By Portfolio Individually And Collectively Evaluated For Impairment [Line Items]
Individually evaluated for impairment
Collectively evaluated for impairment	$ 957	$ 2,777

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Stockholders' Equity - Summary of Shares Repurchased Under Stock Purchase Program (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary Of Shares Repurchased Under Stock Purchase Program [Abstract]
Number of shares repurchased			40,241	6,787
Average price of shares repurchased			$ 40.88	$ 37.70
Shares remaining to be repurchased	194,723	234,964	194,723	234,964

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Derivative Financial Instruments - Recognized Derivative Income Included in Other Noninterest Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Gain Loss On Derivative Net [Abstract]
Derivative income	$ 71	$ 205	$ 309	$ 555

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Loans and Allowance for Loan Losses - Summary of Amounts Included in Nonaccrual Loans Segregated by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	$ 15,094	$ 20,549	$ 22,101
Non-residential real estate owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	551		5,605
Non-residential real estate other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	6,784		3,719
Residential real estate permanent mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	714		585
Residential real estate all other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	1,865		3,594
Non-consumer non-real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	1,280		2,527
Consumer non-real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	124		138
Other loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	1,446		2,221
Acquired loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	$ 2,330		$ 3,712

XML

Securities - Company's Book value of Pledged Securities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Pledged Financial Instruments Not Separately Reported Securities Pledged By Type Of Security [Abstract]
Book value of pledged securities	$ 393,329

XML

Loans and Allowance for Loan Losses - Schedule of Loans Outstanding by Category (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans held for sale (included above)	$ 4,934	$ 11,257	$ 13,384
Total loans	3,358,938	3,242,427	3,116,096
Percent	100.00%	100.00%	100.00%
Taxable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	10,248	9,412	7,786
Percent	0.31%	0.29%	0.25%
Tax-exempt [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	12,232	13,194	13,749
Percent	0.36%	0.41%	0.44%
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	566,670	559,274	541,130
Percent	16.87%	17.25%	17.37%
Oil & gas production & equipment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	139,605	154,380	131,642
Percent	4.16%	4.76%	4.22%
Agriculture [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	89,258	93,274	83,146
Percent	2.66%	2.88%	2.67%
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	283,468	226,102	211,505
Percent	8.44%	6.97%	6.79%
Farmland [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	133,397	125,033	114,043
Percent	3.97%	3.86%	3.66%
One to four family residences [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	696,651	669,230	674,457
Percent	20.74%	20.64%	21.64%
Multifamily residential properties [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	57,825	50,721	50,659
Percent	1.72%	1.56%	1.63%
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,100,544	1,068,445	1,026,097
Percent	32.76%	32.95%	32.93%
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	248,025	253,002	241,864
Percent	7.38%	7.80%	7.76%
Other (not classified above) [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 21,015	$ 20,360	$ 20,018
Percent	0.63%	0.63%	0.64%

XML

STOCK-BASED COMPENSATION

9 Months Ended

Sep. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

STOCK-BASED COMPENSATION

(6) STOCK-BASED COMPENSATION

The Company adopted a nonqualified incentive stock option plan (the “BancFirst ISOP”) in May 1986. The Company amended the BancFirst ISOP to increase the number of shares to be issued under the plan to 3,000,000 shares in May 2013. At September 30, 2013, 185,860 shares were available for future grants. The BancFirst ISOP will terminate on December 31, 2014. 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 September 30, 2013 will become exercisable through the year 2020. 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 amended the BancFirst Directors’ Stock Option Plan to increase the number of shares to be issued under the plan to 205,000 shares in May 2009. At September 30, 2013, 5,000 shares were available for future grants. 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 September 30, 2013 will become exercisable through the year 2017. 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:

	Options			Wgtd. Avg. Exercise Price		Wgtd. Avg. Remaining Contractual Term			Aggregate Intrinsic Value
	(Dollars in thousands, except per share data)
Nine Months Ended September 30, 2013
Outstanding at December 31, 2012		1,216,981		$	31.98
Options granted		60,000			44.11
Options exercised		(118,414	)		25.13
Options canceled, forfeited or expired		(5,000	)		43.02
Outstanding at September 30, 2013		1,153,567			33.26		8.69	Yrs	$	24,003
Exercisable at September 30, 2013		540,167			26.74		5.54	Yrs	$	14,763

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(Dollars in thousands, except per share data)
Weighted average grant-date fair value per share of options granted	$	10.63	$	—	$	9.05	$	—
Total intrinsic value of options exercised		1,424		1,152		2,653		2,180
Cash received from options exercised		1,775		794		2,976		1,516
Tax benefit realized from options exercised		551		446		1,026		843

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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
	(Dollars in thousands)
Stock-based compensation expense	$	399		$	391		$	1,094		$	1,189
Tax benefit		(154	)		(151	)		(423	)		(460	)
Stock-based compensation expense, net of tax	$	245		$	240		$	671		$	729

The Company will continue to amortize the remaining fair value of stock options, over the remaining vesting period of approximately seven years. The following table shows the remaining fair value of stock options:

	September 30, 2013
	(Dollars in thousands)
Fair value of stock options	$	4,902

The following table shows the assumptions used for computing stock-based compensation expense under the fair value method:

	Nine Months Ended September 30,
	2013			2012
Risk-free interest rate		2.70	%		1.74	%
Dividend yield		2.00	%		2.00	%
Stock price volatility		18.35	%		32.88	%
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.

XML

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Impaired loans (less specific allowance) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	$ 36,286	$ 43,206
Gains (Losses)
Foreclosed Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	307	237
Gains (Losses)	(9)	(84)
Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	8,121	9,559
Gains (Losses)	(754)	(1,226)
Level 1 Inputs [Member] | Impaired loans (less specific allowance) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 1 Inputs [Member] | Foreclosed Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 1 Inputs [Member] | Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 2 Inputs [Member] | Impaired loans (less specific allowance) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 2 Inputs [Member] | Foreclosed Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 2 Inputs [Member] | Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value
Level 3 Inputs [Member] | Impaired loans (less specific allowance) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	36,286	43,206
Level 3 Inputs [Member] | Foreclosed Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	307	237
Level 3 Inputs [Member] | Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total Fair Value	$ 8,121	$ 9,559

XML

Securities - Summarizes Securities Held for Investment and Securities Available for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Marketable Securities [Abstract]
Held for investment, at cost (fair value: $12,328)	$ 12,213
Available for sale, at fair value	462,427
Total	$ 474,640	$ 562,542	$ 540,475

XML

Loans and Allowance for Loan Losses - Internal Loan Grading by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 3,358,938	$ 3,242,427	$ 3,116,096
Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	459,346		481,700
Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	877,502		667,870
Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	256,217		244,666
Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	551,150		493,132
Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	778,478		733,906
Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	224,495		207,743
Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	138,866		150,482
Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	72,884		136,597
Grade 1 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,866,273		2,709,926
Grade 1 [Member] | Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	388,923		420,426
Grade 1 [Member] | Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	714,670		564,180
Grade 1 [Member] | Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	224,518		206,702
Grade 1 [Member] | Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	457,649		429,862
Grade 1 [Member] | Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	681,695		644,066
Grade 1 [Member] | Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	210,285		195,242
Grade 1 [Member] | Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	135,169		146,037
Grade 1 [Member] | Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	53,364		103,411
Grade 2 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	425,317		327,755
Grade 2 [Member] | Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	64,418		49,131
Grade 2 [Member] | Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	134,760		78,637
Grade 2 [Member] | Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	25,091		31,558
Grade 2 [Member] | Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	82,827		50,412
Grade 2 [Member] | Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	91,108		80,863
Grade 2 [Member] | Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	11,760		10,185
Grade 2 [Member] | Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,646		2,726
Grade 2 [Member] | Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	12,707		24,243
Grade 3 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	51,967		56,548
Grade 3 [Member] | Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	5,189		6,189
Grade 3 [Member] | Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	21,237		21,334
Grade 3 [Member] | Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	5,574		5,547
Grade 3 [Member] | Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	8,721		9,120
Grade 3 [Member] | Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	4,254		6,500
Grade 3 [Member] | Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,047		1,965
Grade 3 [Member] | Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	738		887
Grade 3 [Member] | Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	4,207		5,006
Grade 4 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	15,381		21,826
Grade 4 [Member] | Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	816		5,954
Grade 4 [Member] | Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,835		3,719
Grade 4 [Member] | Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,034		859
Grade 4 [Member] | Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,953		3,738
Grade 4 [Member] | Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,421		2,477
Grade 4 [Member] | Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	403		349
Grade 4 [Member] | Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	313		832
Grade 4 [Member] | Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,606		3,898
Grade 5 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans			41
Grade 5 [Member] | Non-residential real estate owner occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Non-residential real estate other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Residential real estate permanent mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Residential real estate all other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Non-consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Consumer non-real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans			2
Grade 5 [Member] | Other loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans
Grade 5 [Member] | Acquired loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans			$ 39

XML

FAIR VALUE MEASUREMENTS

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

(9) 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 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, foreclosed assets, other real estate, 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, 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 equity securities classified as available for sale 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 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 entire portfolio 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 adjusted for the specific issue. From time to time, the Company will validate, on a sample basis, 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.

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.

Mortgage Servicing Intangibles

The Company acquired Mortgage Servicing Intangibles with the acquisition of 1^st Bank Oklahoma on July 12, 2011. Mortgage Servicing Intangibles are amortized based on current prepayment assumptions and are adjusted to fair value quarterly, if impaired. Fair value is estimated based on the present value of future cash flows over several interest rate scenarios, which are then discounted at risk-adjusted rates. The Company considers portfolio characteristics, contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service and other economic factors. When available, fair value estimates and assumptions are compared to observable market data and the recent market activity and actual portfolio experience.

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of September 30, 2013 and 2012, 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)
September 30, 2013
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		340,904		20,000		360,904
Mortgage-backed securities		—		14,455		19,501		33,956
States and political subdivisions		—		53,386		—		53,386
Other securities		—		3,421		10,760		14,181
Derivative assets		—		3,049		—		3,049
Derivative liabilities		—		1,886		—		1,886
Loans held for sale		—		4,934		—		4,934
Mortgage servicing intangibles		—		—		595		595
September 30, 2012
Securities available for sale:
U.S. Treasury	$	—	$	—	$	—	$	—
U.S. Federal agencies		—		413,131		20,000		433,131
Mortgage-backed securities		—		22,390		—		22,390
States and political subdivisions		—		57,829		—		57,829
Other securities		—		—		10,356		10,356
Derivative assets		—		4,175		—		4,175
Derivative liabilities		—		1,868		—		1,868
Loans held for sale		—		13,384		—		13,384
Mortgage servicing intangibles		—		—		844		844

The changes in Level 3 assets measured at estimated fair value on a recurring basis during the nine months ended September 30, 2013 and 2012 were as follows:

	Nine Months Ended
	September 30,
	2013			2012
	(Dollars in thousands)
Balance at the beginning of the year	$	30,779		$	33,225
Purchases, issuances and settlements		20,600			1,897
Sales		(251	)		(5,563	)
Gains included in earnings		182			4,424
Total unrealized losses		(454	)		(2,783	)
Balance at the end of the period	$	50,856		$	31,200

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 nine months ended September 30, 2013 and 2012, 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.

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.

Foreclosed 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 foreclosed 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 and the related gains or losses recognized during the period:

	Level 1		Level 2		Level 3		Total Fair Value		Gains (Losses)
	(Dollars in thousands)
Nine Months Ended September 30, 2013
Impaired loans (less specific allowance)		—		—	$	36,286	$	36,286	$	—
Foreclosed assets		—		—		307		307		(9	)
Other real estate owned		—		—		8,121		8,121		(754	)
Nine Months Ended September 30, 2012
Impaired loans (less specific allowance)		—		—	$	43,206	$	43,206	$	—
Foreclosed assets		—		—		237		237		(84	)
Other real estate owned		—		—		9,559		9,559		(1,226	)

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, Federal Funds Sold 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

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.

Long-term Borrowings

The fair values of fixed-rate long-term borrowings are estimated using the rates that would be charged for borrowings of similar remaining maturities.

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:

	September 30,
	2013				2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
FINANCIAL ASSETS
Level 2 inputs:
Cash and cash equivalents	$	1,826,936	$	1,826,936	$	1,912,614	$	1,912,614
Securities held for investment		12,213		12,328		16,769		17,080
Level 3 inputs:
Loans, net		3,320,079		3,346,578		3,078,838		3,143,799
FINANCIAL LIABILITIES
Level 2 inputs:
Deposits		5,309,464		5,338,655		5,253,505		5,275,969
Short-term borrowings		5,074		5,074		5,665		5,665
Long-term borrowings		8,938		8,889		11,255		11,333
Junior subordinated debentures		26,804		28,927		26,804		28,777
OFF-BALANCE SHEET FINANCIAL INSTRUMENTS
Loan commitments				1,378				1,300
Letters of credit				468				458

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 quarterly) 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 September 30, 2013 or 2012.

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INTANGIBLE ASSETS

9 Months Ended

Sep. 30, 2013

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 September 30, 2013
Core deposit intangibles	$	13,473	$	(6,845	)	$	6,628
Customer relationship intangibles		5,657		(2,247	)		3,410
Mortgage servicing intangibles		734		(139	)		595
Total	$	19,864	$	(9,231	)	$	10,633

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, 2012.

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CONSOLIDATED STATEMENTS OF CASH FLOW (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 40,456	$ 39,594
Adjustments to reconcile to net cash provided by operating activities:
Provision for loan losses	804	654
Depreciation and amortization	8,264	7,981
Net amortization of securities premiums and discounts	1,278	1,093
Realized securities gains	(341)	(4,643)
Gain on sales of loans	(1,939)	(2,075)
Cash receipts from the sale of loans originated for sale	165,988	169,065
Cash disbursements for loans originated for sale	(157,149)	(170,446)
Deferred income tax provision	1,789	426
Gain on other assets	(236)	(323)
Decrease in interest receivable	1,175	1,996
Decrease in interest payable	(324)	(559)
Amortization of stock-based compensation arrangements	1,094	1,189
Other, net	9,641	3,936
Net cash provided by operating activities	70,500	47,888
INVESTING ACTIVITIES
Net decrease in Federal funds sold	700	400
Purchases of held for investment securities	(902)	(2,525)
Purchases of available for sale securities	(78,042)	(58,240)
Proceeds from maturities, calls and paydowns of held for investment securities	5,590	8,262
Proceeds from maturities, calls and paydowns of available for sale securities	156,212	121,206
Proceeds from sales of available for sale securities	341	5,094
Purchases of loans	(40,847)	(22,215)
Proceeds from sales of loans	87,764	32,569
Net other increase in loans	(173,231)	(112,844)
Purchases of premises, equipment and computer software	(10,753)	(9,290)
Proceeds from the sale of other assets	3,515	8,245
Net cash used in investing activities	(49,653)	(29,338)
FINANCING ACTIVITIES
Net (decrease) increase in demand, transaction and savings deposits	(70,008)	274,556
Net decrease in time deposits	(61,358)	(58,786)
Net increase (decrease) in short-term borrowings	503	(2,609)
Paydown of long-term borrowings	(240)	(7,221)
Redemption of junior subordinated debentures		(9,279)
Issuance of common stock	3,594	2,188
Common stock acquired	(2,710)	(256)
Cash dividends paid	(8,840)	(12,262)
Net cash (used in) provided by financing activities	(139,059)	186,331
Net (decrease) increase in cash, due from banks and interest-bearing deposits	(118,212)	204,881
Cash, due from banks and interest-bearing deposits at the beginning of the period	1,945,148	1,707,733
Cash, due from banks and interest-bearing deposits at the end of the period	1,826,936	1,912,614
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	10,756	14,366
Cash paid during the period for income taxes	18,646	21,475
Noncash investing and financing activities:
Unpaid common stock dividends declared	$ 4,739	$ 4,397

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Stock-Based Compensation - Remaining Fair Value of Stock Options (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Remaining Fair Value Of Stock Options [Abstract]
Fair value of stock options	$ 4,902

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Intangible Assets - Summary of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Schedule Of Intangible Assets [Line Items]
Gross Carrying Amount	$ 19,864
Accumulated Amortization	(9,231)
Net Carrying Amount	10,633	12,083	12,630
Core deposit intangibles [Member]
Schedule Of Intangible Assets [Line Items]
Gross Carrying Amount	13,473
Accumulated Amortization	(6,845)
Net Carrying Amount	6,628
Customer relationship intangibles [Member]
Schedule Of Intangible Assets [Line Items]
Gross Carrying Amount	5,657
Accumulated Amortization	(2,247)
Net Carrying Amount	3,410
Mortgage Servicing Intangibles [Member]
Schedule Of Intangible Assets [Line Items]
Gross Carrying Amount	734
Accumulated Amortization	(139)
Net Carrying Amount	$ 595

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Securities - Summarizes Amortized Cost and Estimated Fair Values of Securities Available for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 456,476
Gross Unrealized Gains	6,369
Gross Unrealized Losses	(418)
Estimated Fair Value, Total	462,427
U.S. Federal agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	359,076
Gross Unrealized Gains	2,043
Gross Unrealized Losses	(215)
Estimated Fair Value, Total	360,904
Mortgage backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	33,336
Gross Unrealized Gains	620
Gross Unrealized Losses
Estimated Fair Value, Total	33,956	22,390
States and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	52,013
Gross Unrealized Gains	1,436
Gross Unrealized Losses	(63)
Estimated Fair Value, Total	53,386	57,829
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,051
Gross Unrealized Gains	2,270
Gross Unrealized Losses	(140)
Estimated Fair Value, Total	$ 14,181	$ 10,356

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Derivative Financial Instruments - Summary of the Company's Net Credit Exposure Relating to Oil and Gas Swaps (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Credit Risk Derivatives At Fair Value Net [Abstract]
Credit exposure	$ (149)

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Fair Value Measurements - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Loan held for sale selling period	30 days
Amount of non-financial assets (liabilities)	$ 0
Non-financial assets or liabilities for which no impairment was provided	$ 0

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

9 Months Ended

Sep. 30, 2013

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., and BancFirst and its subsidiaries. The principal operating subsidiaries of BancFirst are Council Oak Investment Corporation, Council Oak Real Estate, Inc., BancFirst Agency, Inc. and BancFirst Community Development Corporation. 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, 2012, should be referred to in connection with these unaudited interim consolidated financial statements.

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, 2012, the date of the most recent annual report.

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.

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.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220).” ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. An entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2012. Adoption of ASU 2013-02 did not have a significant effect on the Company’s financial statements.

In July 2012, the FASB issued ASU No. 2012-02, “Intangibles (Topic 350)—Goodwill and Other.” ASU 2012-02 simplifies the impairment test for indefinite-lived intangible assets other than goodwill. The new guidance gives the option to first assess qualitative factors to determine if it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount as a basis for determining whether it is necessary to perform a quantitative valuation test. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after September 15, 2012. Adoption of ASU 2012-02 did not have a significant effect on the Company’s financial statements.

In November 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210)—Disclosure about Offsetting Assets and Liabilities.” ASU 2011-11 is an amendment to require an entity to disclose both net and gross information about offsetting assets and liabilities to enable users of its financial statements to understand the effect of those arrangements. Arrangements include derivatives, sale and repurchase agreements and transactions, securities borrowing and securities lending arrangements. ASU 2011-11 was effective for annual and interim periods beginning on January 1, 2013 and did not have a significant effect on the Company’s financial statements.

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NET INCOME PER COMMON SHARE

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

NET INCOME PER COMMON SHARE

(8) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended September 30, 2013
Basic
Income available to common stockholders	$	14,491		15,287,535	$	0.94
Effect of stock options		—		307,346
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	14,491		15,594,881	$	0.93
Three Months Ended September 30, 2012
Basic
Income available to common stockholders	$	13,860		15,174,755	$	0.91
Effect of stock options		—		272,639
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	13,860		15,447,394	$	0.90
Nine Months Ended September 30, 2013
Basic
Income available to common stockholders	$	40,456		15,252,967	$	2.65
Effect of stock options		—		263,387
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	40,456		15,516,354	$	2.61
Nine Months Ended September 30, 2012
Basic
Income available to common stockholders	$	39,594		15,155,035	$	2.61
Effect of stock options		—		276,063
Diluted
Income available to common stockholders plus assumed exercises of stock options	$	39,594		15,431,098	$	2.57

The following table shows the number and average exercise price of options that were excluded from the computation of diluted net income per common share for each period because the options’ exercise prices were greater than the average market price of the common shares:

	Shares		Average Exercise Price
Three Months Ended September 30, 2013		3,804	$	50.74
Three Months Ended September 30, 2012		479,000		39.21
Nine Months Ended September 30, 2013		330,165		40.09
Nine Months Ended September 30, 2012		597,200		38.66

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Segment Information - Results of Operations and Selected Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net interest income (expense)	$ 40,712	$ 40,832	$ 121,598	$ 122,518
Noninterest income	23,652	22,116	67,920	65,917
Income before taxes	21,055	20,250	60,994	60,716
Total Assets	5,926,730	5,836,751	5,926,730	5,836,751	6,022,250
Operating Segments [Member] | Metropolitan Banks [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	14,043	13,267	41,997	39,784
Noninterest income	3,213	2,840	9,519	8,193
Income before taxes	9,173	8,302	26,218	24,954
Total Assets	2,031,194	1,892,444	2,031,194	1,892,444	1,996,539
Operating Segments [Member] | Community Banks [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	25,613	26,302	76,181	79,317
Noninterest income	12,750	11,153	36,141	32,009
Income before taxes	15,229	15,234	43,818	45,433
Total Assets	3,723,491	3,745,727	3,723,491	3,745,727	3,801,653
Operating Segments [Member] | Other Financial Services [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	1,491	1,777	4,786	5,211
Noninterest income	6,864	7,404	19,839	23,482
Income before taxes	2,619	3,266	8,014	11,664
Total Assets	120,476	126,704	120,476	126,704	186,473
Operating Segments [Member] | Executive, Operations and Support [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)	(435)	(514)	(1,366)	(1,794)
Noninterest income	15,651	14,881	44,192	43,507
Income before taxes	8,688	7,463	24,425	19,682
Total Assets	647,336	636,853	647,336	636,853	602,342
Eliminations [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)
Noninterest income	(14,826)	(14,162)	(41,771)	(41,274)
Income before taxes	(14,654)	(14,015)	(41,481)	(41,017)
Total Assets	$ (595,767)	$ (564,977)	$ (595,767)	$ (564,977)	$ (564,757)

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INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2013

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 September 30, 2013
Core deposit intangibles	$	13,473	$	(6,845	)	$	6,628
Customer relationship intangibles		5,657		(2,247	)		3,410
Mortgage servicing intangibles		734		(139	)		595
Total	$	19,864	$	(9,231	)	$	10,633

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SECURITIES (Tables)

9 Months Ended

Sep. 30, 2013

Investments Debt And Equity Securities [Abstract]

Summarizes Securities Held for Investment and Securities Available for Sale

The following table summarizes securities held for investment and securities available for sale:

	September 30, 2013
	(Dollars in thousands)
Held for investment, at cost (fair value: $12,328)	$	12,213
Available for sale, at fair value		462,427
Total	$	474,640

Summarizes Amortized Cost and Estimated Fair Values of Securities Held for Investment

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
Mortgage backed securities (1)	$	649	$	52	$	—		$	701
States and political subdivisions		11,564		71		(8	)		11,627
Total	$	12,213	$	123	$	(8	)	$	12,328

Summarizes Amortized Cost and Estimated Fair Values of Securities Available for Sale

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

	September 30, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in thousands)
U.S. treasury and other Federal agencies	$	359,076	$	2,043	$	(215	)	$	360,904
Mortgage backed securities (1)		33,336		620		—			33,956
States and political subdivisions		52,013		1,436		(63	)		53,386
Other securities (2)		12,051		2,270		(140	)		14,181
Total	$	456,476	$	6,369	$	(418	)	$	462,427

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

(2) Primarily consists of equity securities.

Maturity of Securities

The maturities of securities held for investment and available for sale are summarized in the following table using contractual maturities.  

	September 30, 2013
	Amortized Cost		Estimated Fair Value
	(Dollars in thousands)
Held for Investment
Contractual maturity of debt securities:
Within one year	$	3,636	$	3,655
After one year but within five years		7,364		7,399
After five years but within ten years		945		976
After ten years		268		298
Total	$	12,213	$	12,328
Available for Sale
Contractual maturity of debt securities:
Within one year	$	197,037	$	197,424
After one year but within five years		119,341		120,593
After five years but within ten years		31,322		32,035
After ten years		100,124		101,615
Total debt securities		447,824		451,667
Equity securities		8,652		10,760
Total	$	456,476	$	462,427

Company's Book Value of Pledged 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:

	September 30, 2013
	(Dollars in thousands)
Book value of pledged securities	$	393,329

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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Registrant Name	BANCFIRST CORP /OK/
Entity Central Index Key	0000760498
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		15,303,372

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Tables)

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Schedule of Loans Outstanding by Category

The following is a schedule of loans outstanding by category:

	September 30, 2013					December 31, 2012					September 30, 2012
	Amount		Percent			Amount		Percent			Amount		Percent
	(Dollars in thousands)
Commercial and industrial	$	566,670		16.87	%	$	559,274		17.25	%	$	541,130		17.37	%
Oil & gas production & equipment		139,605		4.16			154,380		4.76			131,642		4.22
Agriculture		89,258		2.66			93,274		2.88			83,146		2.67
State and political subdivisions:
Taxable		10,248		0.31			9,412		0.29			7,786		0.25
Tax-exempt		12,232		0.36			13,194		0.41			13,749		0.44
Real estate:
Construction		283,468		8.44			226,102		6.97			211,505		6.79
Farmland		133,397		3.97			125,033		3.86			114,043		3.66
One to four family residences		696,651		20.74			669,230		20.64			674,457		21.64
Multifamily residential properties		57,825		1.72			50,721		1.56			50,659		1.63
Commercial		1,100,544		32.76			1,068,445		32.95			1,026,097		32.93
Consumer		248,025		7.38			253,002		7.80			241,864		7.76
Other (not classified above)		21,015		0.63			20,360		0.63			20,018		0.64
Total loans	$	3,358,938		100.00	%	$	3,242,427		100.00	%	$	3,116,096		100.00	%
Loans held for sale (included above)	$	4,934				$	11,257				$	13,384

Summary of Nonperforming and Restructured Assets

The following is a summary of nonperforming and restructured assets:

	September 30, 2013			December 31, 2012			September 30, 2012
	(Dollars in thousands)
Past due 90 days or more and still accruing	$	1,266		$	537		$	731
Nonaccrual		15,094			20,549			22,101
Restructured		18,028			17,866			17,784
Total nonperforming and restructured loans		34,388			38,952			40,616
Other real estate owned and repossessed assets		8,428			9,566			9,796
Total nonperforming and restructured assets	$	42,816		$	48,518		$	50,412
Nonperforming and restructured loans to total loans		1.02	%		1.20	%		1.30	%
Nonperforming and restructured assets to total assets		0.72	%		0.81	%		0.86	%

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

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.

	September 30, 2013		September 30, 2012
	(Dollars in thousands)
Non-residential real estate owner occupied	$	551	$	5,605
Non-residential real estate other		6,784		3,719
Residential real estate permanent mortgage		714		585
Residential real estate all other		1,865		3,594
Non-consumer non-real estate		1,280		2,527
Consumer non-real estate		124		138
Other loans		1,446		2,221
Acquired loans		2,330		3,712
Total	$	15,094	$	22,101

Age Analysis of Past Due Loans Segregated by Class of Loans

The following table presents an age analysis of past due loans, segregated by class of loans:

	Age Analysis of Past Due Loans
	30-89 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 September 30, 2013
Non-residential real estate owner occupied	$	779	$	326	$	1,105	$	458,241	$	459,346	$	308
Non-residential real estate other		6,046		1,925		7,971		869,531		877,502		51
Residential real estate permanent mortgage		2,017		492		2,509		253,708		256,217		217
Residential real estate all other		1,900		1,401		3,301		547,849		551,150		32
Non-consumer non-real estate		889		1,013		1,902		776,576		778,478		138
Consumer non-real estate		2,179		194		2,373		222,122		224,495		187
Other loans		1,531		1,275		2,806		136,060		138,866		236
Acquired loans		1,194		473		1,667		71,217		72,884		97
Total	$	16,535	$	7,099	$	23,634	$	3,335,304	$	3,358,938	$	1,266

As of September 30, 2012
Non-residential real estate owner occupied	$	915	$	466	$	1,381	$	480,319	$	481,700	$	349
Non-residential real estate other		646		1,959		2,605		665,265		667,870		—
Residential real estate permanent mortgage		2,058		399		2,457		242,209		244,666		12
Residential real estate all other		1,635		771		2,406		490,726		493,132		86
Non-consumer non-real estate		4,233		135		4,368		729,538		733,906		7
Consumer non-real estate		2,050		230		2,280		205,463		207,743		170
Other loans		1,706		1,447		3,153		147,329		150,482		43
Acquired loans		1,219		1,061		2,280		134,317		136,597		64
Total	$	14,462	$	6,468	$	20,930	$	3,095,166	$	3,116,096	$	731

Impaired Loans Segregated by Class of Loans

The following table presents impaired loans, segregated by class of loans. 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 September 30, 2013
Non-residential real estate owner occupied	$	993	$	924	$	34	$	700
Non-residential real estate other		25,724		24,216		2,240		25,871
Residential real estate permanent mortgage		1,263		1,068		57		1,298
Residential real estate all other		2,423		2,020		381		3,668
Non-consumer non-real estate		1,931		1,599		396		1,508
Consumer non-real estate		413		394		67		444
Other loans		1,905		1,782		300		1,911
Acquired loans		9,879		7,853		95		8,109
Total	$	44,531	$	39,856	$	3,570	$	43,509
As of September 30, 2012
Non-residential real estate owner occupied	$	7,058	$	6,094	$	232	$	6,237
Non-residential real estate other		20,535		20,340		1,581		20,496
Residential real estate permanent mortgage		1,299		1,089		30		1,184
Residential real estate all other		4,365		4,047		1,344		4,149
Non-consumer non-real estate		3,144		2,539		677		1,745
Consumer non-real estate		447		424		77		364
Other loans		2,420		2,265		264		1,975
Acquired loans		12,872		10,684		71		11,451
Total	$	52,140	$	47,482	$	4,276	$	47,601

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 September 30, 2013
Non-residential real estate owner occupied	$	388,923	$	64,418	$	5,189	$	816	$	—	$	459,346
Non-residential real estate other		714,670		134,760		21,237		6,835		—		877,502
Residential real estate permanent mortgage		224,518		25,091		5,574		1,034		—		256,217
Residential real estate all other		457,649		82,827		8,721		1,953		—		551,150
Non-consumer non-real estate		681,695		91,108		4,254		1,421		—		778,478
Consumer non-real estate		210,285		11,760		2,047		403		—		224,495
Other loans		135,169		2,646		738		313		—		138,866
Acquired loans		53,364		12,707		4,207		2,606		—		72,884
Total	$	2,866,273	$	425,317	$	51,967	$	15,381	$	—	$	3,358,938
As of September 30, 2012
Non-residential real estate owner occupied	$	420,426	$	49,131	$	6,189	$	5,954	$	—	$	481,700
Non-residential real estate other		564,180		78,637		21,334		3,719		—		667,870
Residential real estate permanent mortgage		206,702		31,558		5,547		859		—		244,666
Residential real estate all other		429,862		50,412		9,120		3,738		—		493,132
Non-consumer non-real estate		644,066		80,863		6,500		2,477		—		733,906
Consumer non-real estate		195,242		10,185		1,965		349		2		207,743
Other loans		146,037		2,726		887		832		—		150,482
Acquired loans		103,411		24,243		5,006		3,898		39		136,597
Total	$	2,709,926	$	327,755	$	56,548	$	21,826	$	41	$	3,116,096

Activity in Alll 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 class of loans does not preclude its availability to absorb losses in other classes.

	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 September 30, 2013
Non-residential real estate owner occupied	$	4,714	$	(1	)	$	—	$	(1	)	$	144		$	4,857
Non-residential real estate other		10,866		—			2		2			404			11,272
Residential real estate permanent mortgage		2,733		(30	)		12		(18	)		7			2,722
Residential real estate all other		7,349		(23	)		3		(20	)		(722	)		6,607
Non-consumer non-real estate		8,751		(34	)		110		76			36			8,863
Consumer non-real estate		2,389		(163	)		65		(98	)		207			2,498
Other loans		1,961		(76	)		24		(52	)		36			1,945
Acquired loans		219		(3	)		3		—			(124	)		95
Total	$	38,982	$	(330	)	$	219	$	(111	)	$	(12	)	$	38,859
Nine Months Ended September 30, 2013
Non-residential real estate owner occupied	$	5,104	$	(3	)	$	16	$	13		$	(260	)	$	4,857
Non-residential real estate other		9,865		(19	)		12		(7	)		1,414			11,272
Residential real estate permanent mortgage		2,781		(126	)		27		(99	)		40			2,722
Residential real estate all other		7,034		(177	)		30		(147	)		(280	)		6,607
Non-consumer non-real estate		9,385		(139	)		159		20			(542	)		8,863
Consumer non-real estate		2,451		(458	)		202		(256	)		303			2,498
Other loans		1,885		(235	)		55		(180	)		240			1,945
Acquired loans		220		(53	)		39		(14	)		(111	)		95
Total	$	38,725	$	(1,210	)	$	540	$	(670	)	$	804		$	38,859

	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 September 30, 2012
Non-residential real estate owner occupied	$	5,783	$	(30	)	$	2	$	(28	)	$	(469	)	$	5,286
Non-residential real estate other		8,566		—			15		15			16			8,597
Residential real estate permanent mortgage		3,002		(50	)		4		(46	)		(258	)		2,698
Residential real estate all other		7,004		(107	)		5		(102	)		121			7,023
Non-consumer non-real estate		8,558		(119	)		19		(100	)		712			9,170
Consumer non-real estate		2,282		(117	)		42		(75	)		162			2,369
Other loans		1,854		(24	)		2		(22	)		6			1,838
Acquired loans		387		(53	)		—		(53	)		(57	)		277
Total	$	37,436	$	(500	)	$	89	$	(411	)	$	233		$	37,258
Nine Months Ended September 30, 2012
Non-residential real estate owner occupied	$	5,300	$	(87	)	$	2	$	(85	)	$	71		$	5,286
Non-residential real estate other		8,648		(71	)		46		(25	)		(26	)		8,597
Residential real estate permanent mortgage		2,734		(119	)		84		(35	)		(1	)		2,698
Residential real estate all other		7,030		(169	)		34		(135	)		128			7,023
Non-consumer non-real estate		9,156		(449	)		144		(305	)		319			9,170
Consumer non-real estate		2,315		(308	)		157		(151	)		205			2,369
Other loans		1,886		(231	)		33		(198	)		150			1,838
Acquired loans		587		(129	)		11		(118	)		(192	)		277
Total	$	37,656	$	(1,563	)	$	511	$	(1,052	)	$	654		$	37,258

Allowance for Loan Losses Outstanding by Impairment Methodology

The following table details the amount of ALL by class of loans based on the impairment methodology used by the Company.

	ALL
	September 30, 2013				September 30, 2012
	Individually evaluated for impairment		Collectively evaluated for impairment		Individually evaluated for impairment		Collectively evaluated for impairment
	(Dollars in thousands)
Non-residential real estate owner occupied	$	228	$	4,629	$	462	$	4,824
Non-residential real estate other		2,529		8,743		1,934		6,663
Residential real estate permanent mortgage		226		2,496		218		2,480
Residential real estate all other		1,058		5,549		2,087		4,936
Non-consumer non-real estate		1,052		7,811		1,692		7,478
Consumer non-real estate		314		2,184		315		2,054
Other loans		2460		1,6998		220		1,6188
Acquired loans		—		957		—		2777
Total	$	5,653	$	33,206	$	6,928	$	30,330

Loans Outstanding by Impairment Methodology

The following table details the loans outstanding by class of loans based on the impairment methodology used by the Company.

	Loans
	September 30, 2013						September 30, 2012
	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)
Non-residential real estate owner occupied	$	6,005	$	453,341	$	—	$	12,142	$	469,558	$	—
Non-residential real estate other		28,072		849,430		—		25,053		642,817		—
Residential real estate permanent mortgage		6,609		249,609		—		6,406		238,260		—
Residential real estate all other		10,674		540,476		—		12,858		480,274		—
Non-consumer non-real estate		5,675		772,803		—		8,976		724,930		—
Consumer non-real estate		2,448		222,045		—		2,316		205,427		—
Other loans		292		138,575		—		264		150,218		—
Acquired loans		—		66,071		6,813		—		127,654		8,943
Total	$	59,775	$	3,292,350	$	6,813	$	68,015	$	3,039,138	$	8,943

Transfers from Loans to Other Real Estate Owned and Repossessed Assets

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

	Nine Months Ended September 30,
	2013		2012
	(Dollars in thousands)
Other real estate owned	$	1,287	$	1,633
Repossessed assets		946		664
Total	$	2,233	$	2,297

XML

Fair Value Measurements - Changes in Level 3 Assets Measured at Estimated Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation [Roll Forward]
Balance at the beginning of the year	$ 30,779	$ 33,225
Purchases, issuances and settlements	20,600	1,897
Sales	(251)	(5,563)
Gains included in earnings	182	4,424
Total unrealized losses	(454)	(2,783)
Balance at the end of the period	$ 50,856	$ 31,200

XML

Fair Value Measurements - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	$ 462,427
Derivative assets	3,049		4,175
Derivative liabilities	1,886		1,868
Loans held for sale	4,934	11,257	13,384
Mortgage servicing intangibles	595		844
US Treasury Securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
U.S. Federal agencies securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	360,904		433,131
Mortgage backed securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	33,956		22,390
States and political subdivisions [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	53,386		57,829
Other securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	14,181		10,356
Level 1 Inputs [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Derivative assets
Derivative liabilities
Loans held for sale
Mortgage servicing intangibles
Level 1 Inputs [Member] | US Treasury Securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 1 Inputs [Member] | U.S. Federal agencies securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 1 Inputs [Member] | Mortgage backed securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 1 Inputs [Member] | States and political subdivisions [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 1 Inputs [Member] | Other securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 2 Inputs [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Derivative assets	3,049		4,175
Derivative liabilities	1,886		1,868
Loans held for sale	4,934		13,384
Mortgage servicing intangibles
Level 2 Inputs [Member] | US Treasury Securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 2 Inputs [Member] | U.S. Federal agencies securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	340,904		413,131
Level 2 Inputs [Member] | Mortgage backed securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	14,455		22,390
Level 2 Inputs [Member] | States and political subdivisions [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	53,386		57,829
Level 2 Inputs [Member] | Other securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	3,421
Level 3 Inputs [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Derivative assets
Derivative liabilities
Loans held for sale
Mortgage servicing intangibles	595		844
Level 3 Inputs [Member] | US Treasury Securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 3 Inputs [Member] | U.S. Federal agencies securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	20,000		20,000
Level 3 Inputs [Member] | Mortgage backed securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	19,501
Level 3 Inputs [Member] | States and political subdivisions [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale
Level 3 Inputs [Member] | Other securities [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities available for sale	$ 10,760		$ 10,356