10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

ý Quarterly Report Pursuant to Section13 or 15(d) of the Securities Exchange Act of 1934.

For the quarterly period ended September 30, 2013.

or

¨ Transition Report Pursuant to Section13 or 15(d) of the Securities Exchange Act of 1934.

For the transition period fromto.

Commission file number 001-35854

Independent Bank Group, Inc.

(Exact name of registrant as specified in its charter)

Texas	13-4219346
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1600 Redbud Boulevard, Suite 400 McKinney, Texas	75069-3257
(Address of principal executive offices)	(Zip Code)

(972) 562-9004

(Registrant’s telephone number, including area code)

Not applicable

(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 such shorter periods that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YesýNo¨

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 (§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). YesýNo¨

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

Large accelerated filer	¨	Accelerated filer	¨
Non-accelerated filer	ý	Smaller reporting company	¨

Indicate by a check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes¨Noý

Applicable Only to Corporate Issuers

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

Common Stock, $0.01 Par Value – 12,076,927 shares as of November 5, 2013.

INDEPENDENT BANK GROUP, INC. AND SUBSIDIARIES

Form 10-Q

Quarter Ended September 30, 2013

Part 1.	Financial Information
Item 1.	Financial Statements
	Consolidated Balance Sheets-Unaudited	2
	Consolidated Statements of Income-Unaudited	3
	Consolidated Statements of Comprehensive Income-Unaudited	4
	Consolidated Statements of Changes in Stockholders’ Equity-Unaudited	5
	Consolidated Statements of Cash Flows-Unaudited	6
	Notes to Consolidated Financial Statements-Unaudited	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	44
Item 4.	Controls and Procedures	45
Part 2.	Other Information	46
Item 1.	Legal Proceedings	46
Item 1a.	Risk Factors	47
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	48
Item 3.	Defaults Upon Senior Securities	48
Item 4.	Mine Safety Disclosures	48
Item 5.	Other Information	48
Item 6.	Exhibits	49
	Signatures	50

**

Independent Bank Group, Inc. and Subsidiaries

Consolidated Balance Sheets

September 30, 2013 and December 31, 2012 (unaudited)

(Dollars in thousands, except share information)

	September 30,			December 31,
Assets	2013			2012
Cash and due from banks	$	29,281		$	30,920
Federal Reserve Excess Balance Account (EBA)	91,000			71,370
Cash and cash equivalents	120,281			102,290
Certificates of deposit held in other banks	348			7,720
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	130,987			113,355
Loans held for sale	4,254			9,162
Loans, net of allowance for loan losses of $13,145 and $11,478, respectively	1,542,453			1,358,036
Premises and equipment, net	73,513			70,581
Other real estate owned	8,376			6,819
Adriatica real estate	9,678			9,727
Goodwill	28,742			28,742
Core deposit intangible, net	2,724			3,251
Federal Home Loan Bank (FHLB) of Dallas stock and other restricted stock	8,324			8,165
Bank-owned life insurance (BOLI)	11,164			10,924
Deferred tax asset	2,939			—
Other assets	10,971			11,288
Total assets	$	1,954,754		$	1,740,060
Liabilities and Stockholders’ Equity
Deposits:
Noninterest-bearing	$	281,452		$	259,664
Interest-bearing	1,259,296			1,131,076
Total deposits	1,540,748			1,390,740
FHLB advances	161,507			164,601
Notes payable	—			15,729
Other borrowings	4,460			12,252
Other borrowings, related parties	3,270			8,536
Junior subordinated debentures	18,147			18,147
Other liabilities	8,111			5,545
Total liabilities	1,736,243			1,615,550
Commitments and contingencies
Stockholders’ equity:
Common stock (12,076,927 and 8,278,354 shares outstanding, respectively)	121			83
Additional paid-in capital	209,840			88,791
Retained earnings	9,108			33,290
Treasury stock, at cost (0 and 8,647 shares, respectively)	—			(232		)
Accumulated other comprehensive income (loss)	(558		)	2,578
Total stockholders’ equity	218,511			124,510
Total liabilities and stockholders’ equity	$	1,954,754		$	1,740,060

See Notes to Consolidated Financial Statements

2

Independent Bank Group, Inc. and Subsidiaries

Consolidated Statements of Income

Three and nine months ended September 30, 2013 and 2012 (unaudited)

(Dollars in thousands, except per share information)

	Three months ended September 30,					Nine months ended September 30,
	2013		2012			2013		2012
Interest income:
Interest and fees on loans	$	21,140	$	17,892		$	62,347	$	49,898
Interest on taxable securities	358		288			999		948
Interest on nontaxable securities	258		205			765		604
Interest on federal funds sold and other	85		69			256		226
Total interest income	21,841		18,454			64,367		51,676
Interest expense:
Interest on deposits	1,717		2,070			5,178		6,371
Interest on FHLB advances	819		609			2,475		1,696
Interest on notes payable and other borrowings	253		492			1,326		1,466
Interest on junior subordinated debentures	137		128			408		381
Total interest expense	2,926		3,299			9,387		9,914
Net interest income	18,915		15,155			54,980		41,762
Provision for loan losses	830		1,013			2,939		2,255
Net interest income after provision for loan losses	18,085		14,142			52,041		39,507
Noninterest income:
Service charges on deposit accounts	1,248		826			3,597		2,473
Mortgage fee income	957		1,108			3,120		2,965
Gain (loss) on sale of other real estate	—		(31		)	173		(75		)
Gain on sale of branch	—		51			—		51
Loss on sale of securities available for sale	—		—			—		(3		)
Gain (loss) on sale of premises and equipment	5		(1		)	4		(346		)
Increase in cash surrender value of BOLI	80		82			240		245
Other	161		52			475		302
Total noninterest income	2,451		2,087			7,609		5,612
Noninterest expense:
Salaries and employee benefits	7,976		6,653			23,688		18,910
Occupancy	2,117		1,821			6,562		5,315
Data processing	357		292			969		851
FDIC assessment	253		211			241		624
Advertising and public relations	216		183			620		522
Communications	412		342			1,090		985
Net other real estate owned expenses (including taxes)	111		64			368		205
Operations of IBG Adriatica, net	228		213			600		741
Other real estate impairment	12		—			475		56
Core deposit intangible amortization	175		169			527		480
Professional fees	353		304			918		752
Acquisition expense, including legal	474		206			602		811
Other	1,966		1,278			5,297		3,579
Total noninterest expense	14,650		11,736			41,957		33,831
Income before taxes	5,886		4,493			17,693		11,288
Income tax expense	1,927		—			2,172		—
Net income	$	3,959	$	4,493		$	15,521	$	11,288
Basic earnings per share	$	0.33	$	0.57		$	1.44	$	1.47
Diluted earnings per share	$	0.33	$	0.57		$	1.43	$	1.47
Pro Forma:
Income tax expense	n/a		1,447			5,798		3,635
Net income	n/a		$	3,046		$	11,895	$	7,653
Basic earnings per share	n/a		$	0.39		$	1.10	$	1.00
Diluted earnings per share	n/a		$	0.39		$	1.10	$	1.00

See Notes to Consolidated Financial Statements

3

Independent Bank Group, Inc. and Subsidiaries

Consolidated Statements of Comprehensive Income

Three and nine months ended September 30, 2013 and 2012 (unaudited)

(Dollars in thousands)

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013			2012
Net income	$	3,959	$	4,493	$	15,521		$	11,288
Other comprehensive income (loss) before tax:
Net change in unrealized gains on available for sale securities	1,002		664		(4,348		)	685
Reclassification adjustment for loss on sale of securities available for sale	—		—		—			3
Other comprehensive income (loss) before tax:	1,002		664		(4,348		)	688
Income tax expense (benefit)	351		—		(1,212		)	—
Other comprehensive income (loss), net of tax	651		664		(3,136		)	688
Comprehensive income	$	4,610	$	5,157	$	12,385		$	11,976

See Notes to Consolidated Financial Statements

4

Independent Bank Group, Inc. and Subsidiaries

Consolidated Statements of Changes in Stockholders’ Equity

Nine months endedSeptember 30, 2013 and 2012 (unaudited)

(Dollars in thousands, except for par value and share information)

	Common Stock $.01 Par Value 100 million shares authorized				Additional Paid in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Total
	Shares		Amount
Balance, December 31, 2012	8,278,354		$	83	$	88,791		$	33,290		$	(232	)	$	2,578		$	124,510
Net income	—		—		—			15,521			—			—			15,521
Other comprehensive income (loss), net of tax	—		—		—			—			—			(3,136		)	(3,136		)
Treasury stock retired	(8,647	)	—		(232		)	—			232			—			—
Common stock issued, net of offering costs	3,680,000		37		86,600			—			—			—			86,637
Reclassification adjustment for change in taxable status	—		—		33,624			(33,624		)	—			—			—
Restricted stock granted	127,220		1		(1		)	—			—			—			—
Restricted stock vested	—		—		9			—			—			—			9
Stock awards amortized	—		—		1,049			—			—			—			1,049
Dividends ($0.71 per share)	—		—		—			(6,079		)	—			—			(6,079		)
Balance, September 30, 2013	12,076,927		$	121	$	209,840		$	9,108		$	—		$	(558	)	$	218,511
Balance, December 31, 2011	6,852,309		$	69	$	59,196		$	24,594		$	(24	)	$	2,162		$	85,997
Net income	—		—		—			11,288			—			—			11,288
Other comprehensive income	—		—		—			—			—			688			688
Stock issued	1,238,156		12		25,138			—			—			—			25,150
Stock awards amortized	—		—		446			—			—			—			446
Treasury stock purchased	—		—		—			—			(208		)	—			(208		)
Dividends ($0.74 per share)	—		—		—			(5,629		)	—			—			(5,629		)
Balance, September 30, 2012	8,090,465		$	81	$	84,780		$	30,253		$	(232	)	$	2,850		$	117,732

See Notes to Consolidated Financial Statements 

5

Independent Bank Group, Inc. and Subsidiaries

Consolidated Statements of Cash Flows

Nine months endedSeptember 30, 2013 and 2012 (unaudited)

(Dollars in thousands)

	Nine months ended September 30,
	2013			2012
Cash flows from operating activities:
Net income	$	15,521		$	11,288
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	3,171			2,571
Amortization of core deposit intangibles	527			480
Amortization (accretion) of premium (discount) on securities, net	51			(12		)
Stock grants amortized	1,049			446
FHLB stock dividends	(20		)	(13		)
Loss on sale of securities available for sale	—			3
Net (gain) loss on sale of premises and equipment	(4		)	346
Gain on sale of branch	—			(51		)
(Gain) loss recognized on other real estate transactions	(173		)	75
Impairment of other real estate	475			56
Deferred tax benefit	(1,727		)	—
Provision for loan losses	2,939			2,255
Increase in cash surrender value of life insurance	(240		)	(245		)
Loans originated for sale	(132,897		)	(127,931		)
Proceeds from sale of loans	137,805			126,230
Net change in other assets	317			(188		)
Net change in other liabilities	1,575			732
Net cash provided by operating activities	28,369			16,042
Cash flows from investing activities:
Proceeds from maturities and pay downs of securities available for sale	142,887			43,308
Proceeds from sale of securities available for sale	—			2,078
Purchases of securities available for sale	(163,918		)	(49,125		)
Proceeds from maturities of certificates held in other banks	7,372			6,667
Net purchases of FHLB stock	(139		)	(402		)
Net loans originated	(190,128		)	(124,072		)
Additions to premises and equipment	(6,165		)	(10,643		)
Proceeds from sale of premises and equipment	66			3,244
Proceeds from sale of other real estate owned	1,047			2,053
Capitalized additions to other real estate	(85		)	(476		)
Cash received from acquired bank	—			19,993
Cash paid in connection with acquisition	—			(37,000		)
Net cash transferred in branch sale	—			(18,550		)
Net cash used in investing activities	(209,063		)	(162,925		)
Cash flows from financing activities:
Net increase in demand deposits, NOW and savings accounts	109,341			101,624
Net increase (decrease) in time deposits	40,667			(22,306		)
Net change in FHLB advances	(3,094		)	25,858
Repayments of notes payable and other borrowings	(28,787		)	(3,143		)
Proceeds from other borrowings	—			11,680
Proceeds from sale of common stock	86,637			25,150
Treasury stock purchased	—			(208		)
Dividends paid	(6,079		)	(5,629		)
Net cash provided by financing activities	198,685			133,026
Net change in cash and cash equivalents	17,991			(13,857		)
Cash and cash equivalents at beginning of period	102,290			56,654
Cash and cash equivalents at end of period	$	120,281		$	42,797

See Notes to Consolidated Financial Statements 

6

Independent Bank Group, Inc. and Subsidiaries

Notes to Consolidated Financial Statements (unaudited)

(Dollars in thousands, except for share and per share information)

Note 1. Summary of Significant Accounting Policies

Nature of Operations: Independent Bank Group, Inc. (IBG) through its subsidiary, Independent Bank, a Texas state banking corporation (Bank) (collectively known as the Company), provides a full range of banking services to individual and corporate customers in the North and Central Texas areas through its various branch locations in those areas. The Company is engaged in traditional community banking activities, which include commercial and retail lending, deposit gathering, investment and liquidity management activities. The Company’s primary deposit products are demand deposits, money market accounts and certificates of deposit, and its primary lending products are commercial business and real estate, real estate mortgage and consumer loans.

Basis of Presentation: The accompanying consolidated financial statements include the accounts of IBG, its wholly-owned subsidiaries, the Bank and IBG Adriatica Holdings, Inc. (Adriatica) and the Bank’s wholly-owned subsidiaries, IBG Real Estate Holdings, Inc., and IBG Aircraft Acquisition, Inc. Adriatica was formed in 2011 to acquire a mixed use residential and retail real estate development in McKinney, Texas. All material intercompany transactions and balances have been eliminated in consolidation. In addition, the Company wholly-owns IB Trust I (Trust I), IB Trust II (Trust II), IB Trust III (Trust III), IB Centex Trust I (Centex Trust I) and Community Group Statutory Trust I (CGI Trust I). The Trusts were formed to issue trust preferred securities and do not meet the criteria for consolidation.

The consolidated interim financial statements are unaudited, but include all adjustments, which, in the opinion of management are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in the Company’s registration statement on Form S-1. The consolidated statement of condition at December 31, 2012 has been derived from the audited financial statements as of that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements.

Segment Reporting: The Company has one reportable segment. The Company’s chief operating decision-maker uses consolidated results to make operating and strategic decisions.

Initial Public Offering (IPO): IBG qualifies as an “emerging growth company” as defined by the Jumpstart Our Business Startups Act (JOBS Act). In October 2012, the Board of Directors of the Company approved a resolution for IBG to sell shares of common stock to the public in an initial public offering. On December 28, 2012, the Company submitted a confidential draft Registration Statement on Form S-1 with the SEC with respect to the shares to be registered and sold. On February 27, 2013, the Company filed a Registration Statement on Form S-1 with the SEC. That Registration Statement was declared effective by the SEC on April 2, 2013. The Company sold and issued 3,680,000 shares of common stock at $26 per share in reliance on that Registration Statement. Total proceeds received by the Company, net of offering costs were approximately $87 million.

In connection with the initial public offering, on February 22, 2013, the Company amended its certificate of incorporation to affect a 3.2 for one stock split of its common stock and change the par value of common stock from $1 to $.01. All previously reported share amounts have been retrospectively restated to give effect to the stock split and the common stock account has been reallocated to additional paid in capital to reflect the new par value. The Company also terminated its S-Corporation status and became a taxable corporate entity (C Corporation) on April 1, 2013. The consolidated statement of stockholders' equity presents a constructive distribution to the owners followed by a contribution to the capital of the corporate entity. The transfer did not affect total stockholders’ equity.

Income Taxes: Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities (excluding deferred tax assets and liabilities related to business combinations or components of other comprehensive income). Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the level of historical income and estimates of future taxable income. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized.

The Company evaluates uncertain tax positions at the end of each reporting period. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.

7

The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement.  Any interest and/or penalties related to income taxes are reported as a component of income tax expense.

The Company files a consolidated income tax return in U.S. federal jurisdiction and Texas.

Pro forma statements: Because the Company was not a taxable entity prior to April 1, 2013, pro forma amounts for income tax expense and basic and diluted earnings per share have been presented assuming the Company’s effective tax rate of 32.8% for the nine months ended September 30, 2013 and 32.2% for the three and nine months ended September 30, 2012, as if it had been a C Corporation during those periods. The difference in the statutory rate of 35% and the Company’s effective rate is primarily due to nontaxable income earned on municipal securities and bank owned life insurance. In addition, the pro forma results for the nine months ended September 30, 2013 excludes the initial deferred tax credit as discussed in Note 7.

Earnings per share: Basic earnings per common share are net income divided by the weighted average number of common shares outstanding during the period. The unvested share-based payment awards that contain rights to non forfeitable dividends are considered participating securities for this calculation. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock warrants. The dilutive effect of participating non vested common stock was not included as it was anti-dilutive. Proceeds from the assumed exercise of dilutive stock warrants are assumed to be used to repurchase common stock at the average market price.

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Basic earnings per share:
Net income	$	3,959	$	4,493	$	15,521	$	11,288
Less:
Undistributed earnings allocated to participating securities	68		41		184		112
Dividends paid on participating securities	15		44		119		111
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Basic earnings per share	$	0.33	$	0.57	$	1.44	$	1.47
Diluted earnings per share:
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Total weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Add dilutive stock warrants	74,229		23,126		58,874		23,126
Total weighted-average diluted shares outstanding	11,897,884		7,741,402		10,647,428		7,525,884
Diluted earnings per share	$	0.33	$	0.57	$	1.43	$	1.47
Pro forma earnings per share:
Pro forma net income	n/a		$	3,046	$	11,895	$	7,653
Less undistributed earnings allocated to participating securities	n/a		14		113		40
Less dividends paid on participating securities	n/a		44		119		111
Pro forma net income available to common shareholders after tax	n/a		$	2,988	$	11,663	$	7,502
Pro forma basic earnings per share	n/a		$	0.39	$	1.10	$	1.00
Pro forma diluted earnings per share	n/a		$	0.39	$	1.10	$	1.00
Anti-dilutive participating securities	151,674		106,941		139,416		102,086

Subsequent events: The Company has evaluated subsequent events through the date of filing these financial statements with the SEC and noted no subsequent events requiring financial statement recognition or disclosure.

Reclassifications: Certain prior period accounts have been reclassified to conform with current year presentation.

8

Note 2. Statement of Cash Flows

The Company has chosen to report on a net basis its cash receipts and cash payments for time deposits accepted and repayments of those deposits, and loans made to customers and principal collections on those loans. The Company uses the indirect method to present cash flows from operating activities. Other supplemental cash flow information is presented below:

	Nine months ended September 30,
	2013		2012
Cash transactions:
Interest expense paid	$	9,270	$	9,899
Income taxes paid	$	3,100	$	—
Noncash transactions:
Transfers of loans to other real estate owned	$	2,885	$	340
Loans to facilitate the sale of other real estate owned	$	113	$	20
Writeoff of debt origination costs related to warrants	$	223	$	—
Security purchased, not yet settled	$	1,000	$	—
Restricted stock vested	$	9	$	—

Note 3. Securities Available for Sale

Securities available for sale have been classified in the consolidated balance sheets according to management’s intent. The amortized cost of securities and their approximate fair values at September 30, 2013 and December 31, 2012, are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Securities Available for Sale
September 30, 2013:
U.S. treasuries	$	3,497	$	24	$	—		$	3,521
Government agency securities	88,854		197		(644		)	88,407
Obligations of state and municipal subdivisions	37,873		477		(1,810		)	36,540
Corporate bonds	2,085		—		(41		)	2,044
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	448		27		—			475
	$	132,757	$	725	$	(2,495	)	$	130,987
December 31, 2012:
U.S. treasuries	$	3,493	$	54	$	—		$	3,547
Government agency securities	69,636		575		—			70,211
Obligations of state and municipal subdivisions	34,908		2,123		(217		)	36,814
Corporate bonds	2,105		23		(25		)	2,103
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	635		45		—			680
	$	110,777	$	2,820	$	(242	)	$	113,355

Securities with a carrying amount of approximately $96,374 and $84,117 at September 30, 2013 and December 31, 2012, respectively, were pledged to secure public fund deposits.

9

Proceeds from sale of securities available for sale and gross gains and losses for the three and nine months ended September 30, 2013 and 2012 were as follows:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Proceeds from sale	$	—	$	—	$	—	$	2,078
Gross gains	$	—	$	—	$	—	$	—
Gross losses	$	—	$	—	$	—	$	3

The amortized cost and estimated fair value of securities available for sale at September 30, 2013, by contractual maturity, are shown below. Maturities of pass-through certificates will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	September 30, 2013
	Securities Available for Sale
	Amortized Cost		Fair Value
Due in one year or less	$	6,093	$	6,133
Due from one year to five years	58,361		57,966
Due from five to ten years	35,108		35,081
Thereafter	32,747		31,332
	132,309		130,512
Residential mortgage-backed securities guaranteed by FNMA,  GNMA, FHLMC and SBA	448		475
	$	132,757	$	130,987

The number of securities, unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of September 30, 2013 and December 31, 2012, are summarized as follows:   

		Value Impaired
		Less Than 12 Months					Greater Than 12 Months				Total
Description of Securities	Number of Securities	Estimated Fair Value		Unrealized Losses			Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Securities Available for Sale
September 30, 2013
Government agency securities	29	$	45,643	$	(644	)	$	—	$	—	$	45,643	$	(644	)
Obligations of state and municipal subdivisions	27	15,460		(1,810		)	—		—		15,460		(1,810		)
Corporate bonds	2	2,044		(41		)	—		—		2,044		(41		)
		$	63,147	$	(2,495	)	$	—	$	—	$	63,147	$	(2,495	)
December 31, 2012
Obligations of state and municipal subdivisions	9	$	6,551	$	(217	)	$	—	$	—	$	6,551	$	(217	)
Corporate bonds	1	990		(25		)	—		—		990		(25		)
		$	7,541	$	(242	)	$	—	$	—	$	7,541	$	(242	)

Unrealized losses are generally due to changes in interest rates. The Company has the intent to hold these securities until maturity or a forecasted recovery and it is more likely than not that the Company will not have to sell the securities before the recovery of their cost basis. As such, the losses are deemed to be temporary.

10

Note 4. Loans, Net and Allowance for Loan Losses

Loans, net at September 30, 2013 and December 31, 2012, consisted of the following:

	September 30, 2013			December 31, 2012
Commercial	$	209,453		$	169,882
Real estate:
Commercial	768,427			648,494
Commercial construction, land and land development	95,661			97,329
Residential	331,312			306,187
Single family interim construction	77,493			67,920
Agricultural	31,445			40,127
Consumer	41,747			39,502
Other	60			73
	1,555,598			1,369,514
Allowance for loan losses	(13,145		)	(11,478		)
	$	1,542,453		$	1,358,036

The Company has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. Management reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and non-performing and potential problem loans.

Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. The Company’s management examines current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. Commercial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. These cash flows, however, may not be as expected and the value of collateral securing the loans may fluctuate. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short term loans may be made on an unsecured basis. Additionally, our commercial loan portfolio includes loans made to customers in the energy industry, which is a complex, technical and cyclical industry. Experienced bankers with specialized energy lending experience originate our energy loans. Companies in this industry produce, extract, develop, exploit and explore for oil and natural gas. Loans are primarily collateralized with proven producing oil and gas reserves based on a technical evaluation of these reserves.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally largely dependent on the successful operation of the property or the business conducted on the property securing the loan. Commercial real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Company’s commercial real estate portfolio are diverse in terms of type and geographic location. Management monitors the diversification of the portfolio on a quarterly basis by type and geographic location. Management also tracks the level of owner occupied property versus non owner occupied property.

Land and commercial land development loans are underwritten using feasibility studies, independent appraisal reviews and financial analysis of the developers or property owners. Generally, borrowers must have a proven track record of success. Commercial construction loans are generally based upon estimates of cost and value of the completed project. These estimates may not be accurate. Commercial construction loans often involve the disbursement of substantial funds with the repayment dependent on the success of the ultimate project. Sources of repayment for these loans may be pre-committed permanent financing or sale of the developed property. The loans in this portfolio are geographically diverse and due to the increased risk are monitored closely by management and the board of directors on a quarterly basis.

Residential real estate and single family interim construction loans are underwritten primarily based on borrowers’ credit scores, documented income and minimum collateral values. Relatively small loan amounts are spread across many individual borrowers which minimizes risk in the residential portfolio. In addition, management evaluates trends in past dues and current economic factors on a regular basis.

11

Agricultural loans are collateralized by real estate and/or non-real estate. Agricultural real estate loans are primarily comprised of loans for the purchase of farmland. Loan-to-value ratios on loans secured by farmland generally do not exceed 80% and have amortization periods limited to twenty years. Agricultural non-real estate loans are generally comprised of term loans to fund the purchase of equipment, livestock and seasonal operating lines to cash grain farmers to plant and harvest corn and soybeans. Specific underwriting standards have been established for agricultural-related loans including the establishment of projections for each operating year based on industry developed estimates of farm input costs and expected commodity yields and prices. Operating lines are typically written for one year and secured by the crop and other farm assets as considered necessary.

Agricultural loans carry significant credit risks as they involve larger balances concentrated with single borrowers or groups of related borrowers. In addition, repayment of such loans depends on the successful operation or management of the farm property securing the loan or for which an operating loan is utilized. Farming operations may be affected by adverse weather conditions such as drought, hail or floods that can severely limit crop yields.

Consumer loans represent less than 3% of the outstanding total loan portfolio. Collateral consists primarily of automobiles and other personal assets. Credit score analysis is used to supplement the underwriting process.

Most of the Company’s lending activity occurs within the State of Texas, primarily in the north and central Texas regions. The majority of the Company’s portfolio consists of commercial and residential real estate loans. As of September 30, 2013 and December 31, 2012, there were no concentrations of loans related to a single industry in excess of 10% of total loans.

The allowance for loan losses is an amount that management believes will be adequate to absorb estimated losses relating to specifically identified loans, as well as probable credit losses inherent in the balance of the loan portfolio.

The allowance is derived from the following two components: 1) allowances established on individual impaired loans, which are based on a review of the individual characteristics of each loan, including the customer’s ability to repay the loan, the underlying collateral values, and the industry the customer operates in, and 2) allowances based on actual historical loss experience for the last three years for similar types of loans in the Company’s loan portfolio adjusted for primarily changes in the lending policies and procedures; collection, charge-off and recovery practices; nature and volume of the loan portfolio; volume and severity of nonperforming loans; existence and effect of any concentrations of credit and the level of such concentrations and current, national and local economic and business conditions. This second component also includes an unallocated allowance to cover uncertainties that could affect management’s estimate of probable losses. The unallocated allowance reflects the imprecision inherent in the underlying assumptions used in the methodologies for estimating this component.

The Company’s management continually evaluates the allowance for loan losses determined from the allowances established on individual loans and the amounts determined from historical loss percentages adjusted for the qualitative factors above. Should any of the factors considered by management change, the Company’s estimate of loan losses could also change and would affect the level of future provision expense. While the calculation of the allowance for loan losses utilizes management’s best judgment and all the information available, the adequacy of the allowance for loan losses is dependent on a variety of factors beyond the Company’s control, including, among other things, the performance of the entire loan portfolio, the economy, changes in interest rates and the view of regulatory authorities towards loan classifications.

In addition, regulatory agencies, as an integral part of their examination process, periodically review the Bank’s allowance for loan losses, and may require the Bank to make additions to the allowance based on their judgment about information available to them at the time of their examinations.

Loans requiring an allocated loan loss provision are generally identified at the servicing officer level based on review of weekly past due reports and/or the loan officer’s communication with borrowers. In addition, past due loans are discussed at weekly officer loan committee meetings to determine if classification is warranted. The Company’s credit department has implemented an internal risk based loan review process to identity potential internally classified loans that supplements the annual independent external loan review. The external review generally covers all loans greater than one million dollars. These reviews include analysis of borrower’s financial condition, payment histories and collateral values to determine if a loan should be internally classified. Generally, once classified, an impaired loan analysis is completed by the credit department to determine if the loan is impaired and the amount of allocated allowance required.

The Texas economy, specifically the Company’s lending area of north and central Texas, has generally performed better and appears to be recovering faster than certain other parts of the country. However, Texas is not completely immune to the problems associated with the U.S. economy. The risk of loss associated with all segments of the loan portfolio continues to be impacted by the prolonged economic recovery.

12

The economy and other risk factors are minimized by the Company’s underwriting standards which include the following principles: 1) financial strength of the borrower including strong earnings, high net worth, significant liquidity and acceptable debt to worth ratio, 2) managerial business competence, 3) ability to repay, 4) loan to value, 5) projected cash flow and 6) guarantor financial statements as applicable. Following is a summary of the activity in the allowance for loan losses by loan class for the three and nine months ended September 30, 2013 and 2012:

	Commercial			Commercial Real Estate, Land and Land Development			Residential Real Estate			Single-Family Interim Construction		Agricultural			Consumer			Other		Unallocated			Total
Three months ended September 30, 2013
Balance at the beginning of period	$	1,970		$	7,044		$	2,567		$	540	$	210		$	350		$	—	$	81		$	12,762
Provision for loan losses	264			401			(67		)	46		(17		)	(3		)	—		206			830
Charge-offs	(350		)	(78		)	(21		)	—		—			(26		)	—		—			(475		)
Recoveries	5			13			2			—		—			8			—		—			28
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Nine months ended September 30, 2013
Balance at the beginning of period	$	2,377		$	4,924		$	2,965		$	523	$	159		$	278		$	—	$	252		$	11,478
Provision for loan losses	79			3,068			(405		)	63		34			65			—		35			2,939
Charge-offs	(581		)	(634		)	(87		)	—		—			(50		)	—		—			(1,352		)
Recoveries	14			22			8			—		—			36			—		—			80
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Three months ended September 30, 2012
Balance at the beginning of period	$	1,201		$	5,772		$	1,884		$	677	$	231		$	344		$	—	$	(215	)	$	9,894
Provision for loan losses	105			308			(14		)	76		(23		)	59			—		502			1,013
Charge-offs	(3		)	—			(8		)	—		—			(23		)	—		—			(34		)
Recoveries	—			14			1			—		—			13			—		—			28
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901
Nine months ended September 30, 2012
Balance at the beginning of period	$	1,259		$	5,051		$	1,964		$	317	$	209		$	235		$	—	$	25		$	9,060
Provision for loan losses	125			1,182			77			436		(1		)	174			—		262			2,255
Charge-offs	(81		)	(203		)	(179		)	—		—			(61		)	—		—			(524		)
Recoveries	—			64			1			—		—			45			—		—			110
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901

13

The following table details the amount of the allowance for loan losses and recorded investment in loans by class as of September 30, 2013 and December 31, 2012:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Unallocated		Total
At September 30, 2013
Allowance for losses:
Individually evaluated for impairment	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	—	$	708
Collectively evaluated for impairment	1,765		6,891		2,409		586		193		306		—		287		12,437
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	1,889	$	7,380	$	2,481	$	586	$	193	$	329	$	—	$	287	$	13,145
Loans:
Individually evaluated for impairment	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	—	$	12,248
Collectively evaluated for impairment	207,083		855,305		327,421		77,493		31,445		41,676		60		—		1,540,483
Acquired with deteriorated credit quality	1,743		542		582		—		—		—		—		—		2,867
Ending balance	$	209,453	$	864,088	$	331,312	$	77,493	$	31,445	$	41,747	$	60	$	—	$	1,555,598
At December 31, 2012
Allowance for losses:
Individually evaluated for impairment	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	—	$	989
Collectively evaluated for impairment	2,212		4,280		2,801		523		159		262		—		252		10,489
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	2,377	$	4,924	$	2,965	$	523	$	159	$	278	$	—	$	252	$	11,478
Loans:
Individually evaluated for impairment	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	—	$	14,806
Collectively evaluated for impairment	166,965		732,581		301,259		67,361		40,127		39,397		73		—		1,347,763
Acquired with deteriorated credit quality	2,193		2,641		1,552		559		—		—		—		—		6,945
Ending balance	$	169,882	$	745,823	$	306,187	$	67,920	$	40,127	$	39,502	$	73	$	—	$	1,369,514

14

Nonperforming loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
September 30, 2013:
Nonaccrual loans	$	189	$	827	$	1,816	$	—	$	—	$	43	$	—	$	2,875
Loans past due 90 days and still accruing	—		—		—		—		—		—		—		—
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	114		3,102		571		—		—		1		—		3,788
	$	303	$	3,929	$	2,387	$	—	$	—	$	44	$	—	$	6,663
December 31, 2012:
Nonaccrual loans	$	218	$	4,857	$	894	$	560	$	—	$	70	$	—	$	6,599
Loans past due 90 days and still accruing	—		—		—		—		—		2		—		2
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	481		1,778		2,165		—		—		9		—		4,433
	$	699	$	6,635	$	3,059	$	560	$	—	$	81	$	—	$	11,034

Impaired loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. The Company has identified these loans through its normal loan review procedures. Impaired loans are measured based on 1) the present value of expected future cash flows discounted at the loans effective interest rate; 2) the loans observable market price; or 3) the fair value of collateral if the loan is collateral dependent. Substantially all of the Company’s impaired loans are measured at the fair value of the collateral. In limited cases, the Company may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

15

Impaired loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
At September 30, 2013:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	478	$	3,245	$	1,324	$	—	$	—	$	45	$	—	$	5,092
Impaired loans with no allowance for loan losses	149		4,996		1,985		—		—		26		—		7,156
Total	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	12,248
Unpaid principal balance of impaired loans	$	627	$	8,630	$	3,337	$	—	$	—	$	71	$	—	$	12,665
Allowance for loan losses on impaired loans	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	708
At December 31, 2012:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	644	$	5,532	$	1,301	$	—	$	—	$	73	$	—	$	7,550
Impaired loans with no allowance for loan losses	80		5,069		2,075		—		—		32		—		7,256
Total	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	14,806
Unpaid principal balance of impaired loans	$	741	$	11,140	$	3,475	$	—	$	—	$	122	$	—	$	15,478
Allowance for loan losses on impaired loans	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	989
For the three months ended September 30, 2013:
Average recorded investment in impaired loans	$	599	$	8,095	$	3,394	$	—	$	—	$	73	$	—	$	12,161
Interest income recognized on impaired loans	$	4	$	112	$	34	$	—	$	—	$	1	$	—	$	151
For the nine months ended September 30, 2013:
Average recorded investment in impaired loans	$	687	$	8,833	$	3,435	$	—	$	—	$	83	$	—	$	13,038
Interest income recognized on impaired loans	$	26	$	347	$	120	$	—	$	—	$	4	$	—	$	497
For the three months ended September 30, 2012:
Average recorded investment in impaired loans	$	736	$	13,396	$	3,939	$	41	$	—	$	141	$	—	$	18,253
Interest income recognized on impaired loans	$	15	$	277	$	108	$	4	$	—	$	3	$	—	$	407
For the nine months ended September 30, 2012:
Average recorded investment in impaired loans	$	784	$	13,331	$	4,205	$	43	$	—	$	134	$	—	$	18,497
Interest income recognized on impaired loans	$	39	$	520	$	181	$	4	$	—	$	7	$	—	$	751

Certain impaired loans have adequate collateral and do not require a related allowance for loan loss.

The Company will charge off that portion of any loan which management considers a loss. Commercial and real estate loans are generally considered for charge-off when exposure beyond collateral coverage is apparent and when no further collection of the loss portion is anticipated based on the borrower’s financial condition.

The restructuring of a loan is considered a “troubled debt restructuring” if both 1) the borrower is experiencing financial difficulties and 2) the creditor has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, extending amortization and other actions intended to minimize potential losses.

16

A “troubled debt restructured” loan is identified as impaired and measured for credit impairment as of each reporting period in accordance with the guidance in  Accounting Standards Codification (ASC) 310-10-35. The recorded investment in troubled debt restructurings, including those on nonaccrual, was $5,258 and $7,544 as of September 30, 2013 and December 31, 2012.

Following is a summary of loans modified under troubled debt restructurings during the three and nine months ended September 30, 2013 and 2012:

.

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
Troubled debt restructurings during the three months ended September 30, 2013:
Number of contracts	—		1		—		—		—		—		—		1
Pre-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Post-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Troubled debt restructurings during the nine months ended September 30, 2013:
Number of contracts	—		2		—		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Post-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Troubled debt restructurings during the three months ended September 30, 2012:
Number of contracts	—		—		2		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Post-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Troubled debt restructurings during the nine months ended September 30, 2012:
Number of contracts	2		1		3		—		—		1		—		7
Pre-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398
Post-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398

At September 30, 2013, there were no loans modified under troubled debt restructurings during the previous twelve month period that subsequently defaulted during the three and nine months ended September 30, 2013. At September 30, 2012, there was one consumer loan totaling $26 that was originated during the previous twelve month period that defaulted during the three and nine months ended September 30, 2012.

Modifications primarily relate to extending the amortization periods of the loans and interest rate concessions. The majority of these loans were identified as impaired prior to restructuring; therefore the modifications did not materially impact the Company’s determination of the allowance for loan loss.

17

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. The following table presents information regarding the aging of past due loans by loan class as of September 30, 2013 and December 31, 2012:

	Loans 30-89 Days Past Due		Loans 90 or More Past Due		Total Past Due Loans		Current Loans		Total Loans
September 30, 2013
Commercial	$	1,202	$	184	$	1,386	$	208,067	$	209,453
Commercial real estate, land and land  development	2,087		631		2,718		861,370		864,088
Residential real estate	348		1,523		1,871		329,441		331,312
Single-family interim construction	173		—		173		77,320		77,493
Agricultural	8		—		8		31,437		31,445
Consumer	41		26		67		41,680		41,747
Other	—				—		60		60
	$	3,859	$	2,364	$	6,223	$	1,549,375	$	1,555,598
December 31, 2012
Commercial	$	845	$	—	$	845	$	169,037	$	169,882
Commercial real estate, land and land  development	3,091		62		3,153		742,670		745,823
Residential real estate	1,305		360		1,665		304,522		306,187
Single-family interim construction	—		559		559		67,361		67,920
Agricultural	23		—		23		40,104		40,127
Consumer	110		32		142		39,360		39,502
Other	—		—		—		73		73
	$	5,374	$	1,013	$	6,387	$	1,363,127	$	1,369,514

The Company’s internal classified report is segregated into the following categories: 1) Pass/Watch, 2) Other Assets Especially Mentioned (OAEM), 3) Substandard and 4) Doubtful. The loans placed in the Pass/Watch category reflect the Company’s opinion that the loans reflect potential weakness which requires monitoring on a more frequent basis. The loans in the OAEM category reflect the Company’s opinion that the credit contains weaknesses which represent a greater degree of risk and warrant extra attention. These loans are reviewed monthly in the officers and directors loan committee meetings to determine if a change in category is warranted. The loans placed in the Substandard category are considered to be potentially inadequately protected by the current debt service capacity of the borrower and/or the pledged collateral. These credits, even if apparently protected by collateral value, have shown weakness related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. There is possibility that some future loss could be sustained by the Company if such weakness is not corrected. The Doubtful category includes loans that are in default or principal exposure is probable. Substandard and Doubtful loans are individually evaluated to determine if they should be classified as impaired and an allowance is allocated if deemed necessary under ASC 310-10.

The loans that are not impaired are included with the remaining “pass” credits in determining the portion of the allowance for loan loss based on historical loss experience and other qualitative factors. The portfolio is segmented into categories including: commercial loans, consumer loans, commercial real estate loans, residential real estate loans and agricultural loans. The adjusted historical loss percentage is applied to each category. Each category is then added together to determine the allowance allocated under ASC 450-20.

18

A summary of loans by credit quality indicator by class as of September 30, 2013 and December 31, 2012, is as follows:

	Pass (Rating 1-4)		Pass/ Watch		OAEM		Substandard		Doubtful		Total
September 30, 2013
Commercial	$	199,777	$	2,148	$	5,734	$	1,794	$	—	$	209,453
Commercial real estate, construction, land  and land development	841,665		10,169		4,173		8,081		—		864,088
Residential real estate	321,518		5,623		443		3,728		—		331,312
Single-family interim construction	77,128		365		—		—		—		77,493
Agricultural	31,199		214		—		32		—		31,445
Consumer	41,664		1		15		67		—		41,747
Other	60		—		—		—		—		60
	$	1,513,011	$	18,520	$	10,365	$	13,702	$	—	$	1,555,598
December 31, 2012
Commercial	$	165,842	$	2,824	$	203	$	1,013	$	—	$	169,882
Commercial real estate, construction, land  and land development	716,243		11,502		8,804		9,274		—		745,823
Residential real estate	295,870		4,303		867		5,039		108		306,187
Single-family interim construction	67,360		—		—		560		—		67,920
Agricultural	39,936		147		—		44		—		40,127
Consumer	39,315		60		13		114		—		39,502
Other	73		—		—		—		—		73
	$	1,324,639	$	18,836	$	9,887	$	16,044	$	108	$	1,369,514

The Company acquired certain loans which experienced credit deterioration since origination (purchased credit impaired (PCI) loans). Accretion on PCI loans is based on estimated future cash flows, regardless of contractual maturity.

The outstanding balance and related carrying amount of purchased credit impaired loans at September 30, 2013, December 31, 2012, and acquisition date are as follows:

	September 30, 2013			December 31, 2012			Acquisition Date
Outstanding balance	$	3,632		$	9,178		$	10,839
Nonaccretable difference	(765		)	(2,232		)	(2,590		)
Accretable yield	—			(1		)	(27		)
Carrying amount	$	2,867		$	6,945		$	8,222

At September 30, 2013 and December 31, 2012, there was no allocation established in the allowance for loan losses related to purchased credit impaired loans.

19

Note 5. Commitments and Contingencies

Financial Instruments with Off-Balance Sheet Risk

The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. The commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the balance sheet.

The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of this instrument. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. At September 30, 2013 and December 31, 2012, the approximate amounts of these financial instruments were as follows:

	September 30,		December 31,
	2013		2012
Commitments to extend credit	$	286,616	$	153,932
Standby letters of credit	2,229		2,704
	$	288,845	$	156,636

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained if deemed necessary by the Company upon extension of credit is based on management’s credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, farm crops, property, plant and equipment and income-producing commercial properties.

Letters of credit are written conditional commitments used by the Company to guarantee the performance of a customer to a third party. The Company’s policies generally require that letter of credit arrangements contain security and debt covenants similar to those contained in loan arrangements. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount shown in the table above. If the commitment is funded, the Company would be entitled to seek recovery from the customer. As of September 30, 2013 and December 31, 2012, no amounts have been recorded as liabilities for the Company’s potential obligations under these guarantees.

Litigation

The Company is involved in certain legal actions arising from normal business activities. Management believes that the outcome of such proceedings will not materially affect the financial position, results of operations or cash flows of the Company.

Lease Commitments

The Company leases certain branch facilities and other facilities. Rent expense related to these leases amounted to $168 and $538 for the three and nine months ended September 30, 2013, respectively, and $103 and $267 for the three and nine months ended September 30, 2012, respectively.

Note 6. Notes Payable and Other Borrowings

Notes payable totaled $0 and $15,729 at September 30, 2013 and December 31, 2012, respectively. During April 2013, the Company repaid all of its outstanding notes payable, including two notes payable from Adriatica to an unaffiliated commercial bank and two senior notes payable to another unaffiliated commercial bank. Other borrowings, including those borrowings due to related parties totaled $7,730 and $20,788 at September 30, 2013 and December 31, 2012, respectively. In April 2013, $2,812 subordinated debt issuance from a commercial bank and $1,223 subordinated debt issued to individuals were repaid. In addition, the Company repaid $4,155 and $4,680 of subordinated debt issued to individuals in August and September, 2013, respectively.

20

Note 7. Income Taxes

Income tax expense was as follows:

	For the Three Months Ended September 30, 2013			For the Nine Months Ended September 30, 2013
Income tax expense for the period	$	1,927		$	3,932
Initial recording of deferred tax asset	—			(1,760		)
Income tax expense, as reported	$	1,927		$	2,172
Effective tax rate	32.7		%	12.3		%

In connection with the initial public offering as discussed in Note 1, the Company terminated its S-Corporation status and became a taxable entity (C Corporation) on April 1, 2013. As such, any periods prior to April 1, 2013 will not reflect income tax expense. The reported income tax expense for the nine months ended September 30, 2013 reflects the initial recording of the deferred tax net asset of $1,760, which is the result of timing differences in the recognition of income/deductions for generally accepted accounting principles (GAAP) and tax purposes. The consolidated statements of income present pro forma results of operations for the current year to date period and for prior year quarter and year to date periods. Without the initial recording of the deferred tax benefit, the effective tax rate would have been 32.8% for the nine months ended September 30, 2013. The difference in the statutory rate of 35% and the Company's effective tax rate is primarily due to nontaxable income earned on municipal securities and bank owned life insurance.

Components of deferred tax assets and liabilities are as follows:

	September 30, 2013
Deferred tax assets:
Allowance for loan losses	$	4,601
NOL carryforwards from acquisitions	993
Net unrealized loss on available for sale securities	620
Acquired loan fair market value adjustments	748
Restricted stock	918
Bonus accrual	306
Other real estate owned	397
Unearned rent income	59
Nonaccrual loans	67
Other	48
	8,757
Deferred tax liabilities:
Premises and equipment	(4,703		)
Core deposit intangibles	(953		)
Securities	(98		)
FHLB stock	(64		)
	(5,818		)
Net deferred tax asset	$	2,939

21

Note 8. Fair Value Measurements

The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820, Fair Value Measurements and Disclosures, 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 – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

Level 3 Inputs – Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of September 30, 2013 and December 31, 2012 by level within the ASC Topic 820 fair value measurement hierarchy:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,521	$	—	$	3,521	$	—
Government agency securities	88,407		—		88,407		—
Obligations of state and municipal subdivisions	36,540		—		36,540		—
Corporate bonds	2,044		—		2,044		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	475		—		475		—
Liabilities:
Contingent consideration	—		—		—		—
December 31, 2012
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,547	$	—	$	3,547	$	—
Government agency securities	70,211		—		70,211		—
Obligations of state and municipal subdivisions	36,814		—		36,814		—
Corporate bonds	2,103		—		2,103		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	680		—		680		—
Liabilities:
Contingent consideration	290		—		—		290

There were no transfers between Level 1 and Level 2 categorizations for the periods presented.

22

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

Securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury and other yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things.

Contingent consideration, related to the acquisition of Town Center Bank in 2010, is reported at fair value using Level 3 inputs. The contingent consideration is remeasured on a recurring basis based on the expected present value of cash flows to be paid to the shareholders of the acquired institution using a market discount rate. In August 2013, the Company paid the final contingent payment of $287.

The following table presents the activity in the contingent consideration for the nine months ended September 30, 2013 and 2012:

	Nine months ended September 30,
	2013			2012
Balance, beginning of period	$	290		$	821
Settlements	(287		)	(393		)
Change in estimated payments to be made	(3		)	(2		)
Balance, end of period	$	—		$	426

In accordance with ASC Topic 820, certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, the assets and liabilities are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following table presents the assets carried on the consolidated balance sheet by caption and by level in the fair value hierarchy at September 30, 2013 and December 31, 2012, for which a nonrecurring change in fair value has been recorded:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Period Ended Total Losses
September 30, 2013
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	1,111	$	—	$	—	$	1,111	$	282
Other real estate	2,768		—		—		2,768		475
December 31, 2012
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	5,146	$	—	$	—	$	5,146	$	187
Other real estate	748		—		—		748		94

23

Impaired loans (loans which are not expected to repay all principal and interest amounts due in accordance with the original contractual terms) are measured at an observable market price (if available) or at the fair value of the loan’s collateral (if collateral dependent). Fair value of the loan’s collateral is determined by appraisals or independent valuation which is then adjusted for the estimated costs related to liquidation of the collateral. Management’s ongoing review of appraisal information may result in additional discounts or adjustments to valuation based upon more recent market sales activity or more current appraisal information derived from properties of similar type and/or locale. Therefore, the Company has categorized its impaired loans as Level 3.

The Company has no nonfinancial assets or nonfinancial liabilities measured at fair value on a recurring basis. Other real estate is measured at fair value on a nonrecurring basis (upon initial recognition or subsequent impairment). Other real estate is classified within Level 3 of the valuation hierarchy. When transferred from the loan portfolio, other real estate is adjusted to fair value less estimated selling costs and is subsequently carried at the lower of carrying value or fair value less estimated selling costs. The fair value is determined using an external appraisal process, discounted based on internal criteria.

There were no transfers into or out of Level 3 categorization for the periods presented.

For Level 3 financial and nonfinancial assets and liabilities measured at fair value at September 30, 2013, the significant unobservable inputs used in the fair value measurements are as follows:

Assets/Liabilities	Fair Value		Valuation Technique	Unobservable Input(s)	Weighted Average
Impaired loans	$	1,111	Collateral method	Adjustments for selling costs	8%
Other real estate	2,768		Collateral method	Adjustments for selling costs	8%

24

The methods and assumptions used by the Company in estimating fair values of financial instruments as disclosed herein in accordance with ASC Topic 825, Financial Instruments, other than for those measured at fair value on a recurring and nonrecurring basis discussed above, are as follows:

Cash and cash equivalents: The carrying amounts of cash and cash equivalents approximate their fair value.

Certificates of deposit held in other banks: The carrying amount of certificates of deposit in other banks, which mature within one year, approximates fair value.

Securities available for sale: Fair values for securities are based on quoted market prices or other 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 spreads, credit information and the bond’s terms and conditions, among other things.

Loans and loans held for sale: For variable-rate loans that reprice frequently and have no significant changes in credit risk, fair values are based on carrying values. Fair values for certain mortgage loans (for example, one-to-four family residential), commercial real estate and commercial loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.

Federal Home Loan Bank of Dallas and other restricted stock: The carrying value of restricted securities such as stock in the Federal Home Loan Bank of Dallas and Independent Bankers Financial Corporation approximates fair value.

Deposits: The fair values disclosed for demand deposits are, by definition, equal to the amount payable on demand at the reporting date (that is their carrying amounts). The carrying amounts of variable-rate certificates of deposit (CDs) approximate their fair values at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits.

Federal Home Loan Bank advances, line of credit and federal funds purchased: The fair value of advances maturing within 90 days approximates carrying value. Fair value of other advances is based on the Company’s current borrowing rate for similar arrangements.

Notes payable and other borrowings: The fair values are based upon prevailing rates on similar debt in the market place.

Junior subordinated debentures: The fair value of junior subordinated debentures is estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements.

Accrued interest: The carrying amounts of accrued interest approximate their fair values.

Contingent Consideration: The contingent consideration liability related to an acquisition is based on the expected present value of cash flows to be paid to the shareholders of the acquired institution using a market discount rate.

Off-balance sheet instruments: Commitments to extend credit and standby letters of credit have short maturities and therefore have no significant fair value.

25

The carrying amount, estimated fair value and the level of the fair value hierarchy of the Company’s financial instruments were as follows at September 30, 2013 and December 31, 2012:

					Fair Value Measurements at Reporting Date Using
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Financial assets:
Cash and cash equivalents	$	120,281	$	120,281	$	120,281	$	—	$	—
Certificates of deposit held in other banks	348		348		—		348		—
Securities available for sale	130,987		130,987		—		130,987		—
Loans held for sale	4,254		4,254		—		4,254		—
Loans, net	1,542,453		1,559,313		—		1,554,929		4,384
FHLB of Dallas stock and other restricted stock	8,324		8,324		—		8,324		—
Accrued interest receivable	4,595		4,595		—		4,595		—
Financial liabilities:
Deposits	1,540,748		1,542,753		—		1,542,753		—
Accrued interest payable	879		879		—		879		—
FHLB advances	161,507		163,768		—		163,768		—
Other borrowings	7,730		7,983		—		7,983		—
Junior subordinated debentures	18,147		18,111		—		18,111		—
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—
December 31, 2012
Financial assets:
Cash and cash equivalents	$	102,290	$	102,290	$	102,290	$	—	$	—
Certificates of deposit held in other banks	7,720		7,720		—		7,720		—
Securities available for sale	113,355		113,355		—		113,355		—
Loans held for sale	9,162		9,162		—		9,162		—
Loans, net	1,358,036		1,399,938		—		1,393,377		6,561
FHLB of Dallas stock and other restricted stock	8,165		8,165		—		8,165		—
Accrued interest receivable	4,647		4,647		—		4,647		—
Financial liabilities:
Deposits	1,390,740		1,399,373		—		1,399,373		—
Accrued interest payable	985		985		—		985		—
FHLB advances	164,601		170,239		—		170,239		—
Notes payable	15,729		15,729		—		15,729		—
Other borrowings	20,788		20,970		—		20,970		—
Junior subordinated debentures	18,147		18,114		—		18,114		—
Contingent consideration	290		290		—		—		290
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—

26

Note 9. Stock Awards and Stock Warrants

The Company grants common stock awards to certain employees of the Company. The common stock issued prior to 2013 vests five years from the date the award is granted and the related compensation expense is recognized over the vesting period. In connection with the initial public offering in April 2013, the Board of Directors adopted a new 2013 Equity Incentive Plan. The Plan reserved 800,000 shares of common stock to be awarded by the Company’s compensation committee. The shares issued under the 2013 Plan are restricted and will vest evenly over a five year employment period. Shares granted prior to 2012 and those in 2013 were issued at the date of grant and receive dividends. Shares issued under a revised plan in 2012 are not outstanding shares of the Company until they vest and do not receive dividends.

The following table summarizes the activity in nonvested shares for the nine months endedSeptember 30, 2013 and 2012:

	Number of Shares		Weighted Average Grant Date Price
Nonvested shares, December 31, 2012	208,608		$	17.07
Granted during the period	119,540		28.68
Vested during the period	(22,716	)	14.30
Nonvested shares, September 30, 2013	305,432		$	22.16
Nonvested shares, December 31, 2011	180,025		$	15.64
Granted during the period	36,960		20.31
Vested during the period	(29,977	)	14.76
Nonvested shares, September 30, 2012	187,008		$	16.70

Compensation expense related to these awards was $455 and $1,049 for the three and nine months ended September 30, 2013, respectively and $156 and $446 for the three and nine months ended September 30, 2012, respectively. Compensation expense is recorded in salaries and employee benefits in the accompanying consolidated statements of income. At September 30, 2013, future compensation expense is estimated to be $4,147 and will be recognized over a remaining weighted average period of 2.64 years.

The fair value of common stock awards that vested during the nine months endedSeptember 30, 2013 and 2012 was $641 and $609, respectively.

The Company has issued warrants representing the right to purchase 150,544 shares of Company stock at $17.19 per share to certain Company directors and shareholders. The warrants were issued in return for the shareholders agreement to repurchase the subordinated debt outstanding to an unaffiliated bank in the event of Company default. The warrants expire in December 2018 and were recorded at a fair value of $475 as of the date of the warrants issuance. The Company recorded this amount as debt origination costs and was amortizing it over the term of the debt. In April 2013, the Company paid off the subordinated debt and wrote off the remaining balance of $223 of the debt origination costs to interest expense.

Note 10. Regulatory Matters

Under banking law, there are legal restrictions limiting the amount of dividends the Bank can declare. Approval of the regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels. For state banks, subject to regulatory capital requirements, payment of dividends is generally allowed to the extent of net profits.

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

27

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total and Tier I capital (as defined in the regulations) to risk weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). Management believes, as of September 30, 2013 and December 31, 2012, the Company and the Bank meet all capital adequacy requirements to which they are subject.

As of September 30, 2013 and December 31, 2012, the Bank’s capital ratios exceeded those levels necessary to be categorized as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized”, the Bank must maintain minimum total risk based, Tier I risk based and Tier I leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the Bank’s category.

The actual capital amounts and ratios of the Company and Bank as of September 30, 2013 and December 31, 2012, are presented in the following table:

	Actual				Minimum for Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
September 30, 2013
Total capital to risk weighted assets:
Consolidated	$	225,078	15.05	%	$	119,627	8.00	%	N/A		N/A
Bank	185,911		12.53		118,684		8.00		$	148,355	10.00	%
Tier I capital to risk weighted assets:
Consolidated	205,203		13.72		59,814		4.00		N/A		N/A
Bank	172,766		11.65		59,342		4.00		89,013		6.00	%
Tier I capital to average assets:
Consolidated	205,203		10.74		76,456		4.00		N/A		N/A
Bank	172,766		9.10		75,963		4.00		94,954		5.00	%
December 31, 2012
Total capital to risk weighted assets:
Consolidated	$	137,553	10.51	%	$	104,693	8.00	%	N/A		N/A
Bank	143,646		11.07		103,790		8.00		$	129,738	10.00	%
Tier I capital to risk weighted assets:
Consolidated	107,539		8.22		52,346		4.00		N/A		N/A
Bank	132,168		10.19		51,895		4.00		77,843		6.00	%
Tier I capital to average assets:
Consolidated	107,539		6.45		66,722		4.00		N/A		N/A
Bank	132,168		7.99		66,162		4.00		82,702		5.00	%

28

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Note Regarding Forward Looking Statements

This Quarterly Report on Form 10-Q, our other filings with the SEC, and other press releases, documents, reports and announcements that we make, issue or publish may contain statements that we believe are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are statements or projections with respect to matters such as our future results of operations, including our future revenues, income, expenses, provision for taxes, effective tax rate, earnings per share and cash flows, our future capital expenditures and dividends, our future financial condition and changes therein, including changes in our loan portfolio and allowance for loan losses, our future capital structure or changes therein, the plan and objectives of management for future operations, our future or proposed acquisitions, the future or expected effect of acquisitions on our operations, results of operations and financial condition, our future economic performance and the statements of the assumptions underlying any such statement. Such statements are typically identified by the use in the statements of words or phrases such as “aim,” “anticipate,” “estimate,” “expect,” “goal,” “guidance,” “intend,” “is anticipated,” “is estimated,” “is expected,” “is intended,” “objective,” “plan,” “projected,” “projection,” “will affect,” “will be,” “will continue,” “will decrease,” “will grow,” “will impact,” “will increase,” “will incur,” “will reduce,” “will remain,” “will result,” “would be,” variations of such words or phrases (including where the word “could", “may” or “would” is used rather than the word “will” in a phrase) and similar words and phrases indicating that the statement addresses some future result, occurrence, plan or objective. The forward-looking statements that we make are based on the Company’s current expectations and assumptions regarding its business, the economy, and other future conditions. Because forward-looking statements relate to future results and occurrences, they are subject to inherent uncertainties, risks, and changes in circumstances that are difficult to predict. The Company’s actual results may differ materially from those contemplated by the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance. Many possible events or factors could affect the future financial results and performance of the Company and could cause such results or performance to differ materially from those expressed in forward-looking statements. These factors include, but are not limited to, the following:

• worsening business and economic conditions nationally, regionally and in our target markets, particularly in Texas and the geographic areas in which we operate;

• our dependence on our management team and our ability to attract, motivate and retain qualified personnel;

• the concentration of our business within our geographic areas of operation in Texas;

• deteriorating asset quality and higher loan charge-offs;

• concentration of our loan portfolio in commercial and residential real estate loans and changes in the prices, values and sales volumes of commercial and residential real estate;

• inaccuracy of the assumptions and estimates we make in establishing reserves for probable loan losses and other estimates;

• the quality of the assets acquired from other organizations being lower than determined in our due diligence investigation and related exposure to unrecoverable losses on loans acquired;

• lack of liquidity, including as a result of a reduction in the amount of sources of liquidity we currently have;

• material decreases in the amount of deposits we hold;

• regulatory requirements to maintain minimum capital levels;

• changes in market interest rates that affect the pricing of our loans and deposits and our net interest income;

• fluctuations in the market value and liquidity of the securities we hold for sale;

• effects of competition from a wide variety of local, regional, national and other providers of financial, investment and insurance services;

• changes in economic and market conditions that affect the amount of assets we have under administration;

• the institution and outcome of litigation and other legal proceeding against us or to which we become subject;

• worsening market conditions affecting the financial industry generally;

• the impact of recent and future legislative and regulatory changes, including changes in banking, securities and tax laws and regulations and their application by our regulators, such as the Dodd-Frank Wall Street Reform and Consumer Protection Act, or the Dodd-Frank Act;

• changes in accounting policies and practices, as may be adopted by the bank regulatory agencies, the Financial Accounting Standards Board, the Securities and Exchange Commission and Public Company Accounting Oversight Board:

• governmental monetary and fiscal policies;

• changes in the scope and cost of Federal Deposit Insurance Corporation, or FDIC, insurance and other coverage;

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• the effects of war or other conflicts, acts of terrorism (including cyber attacks) or other catastrophic events, including storms, droughts, tornadoes and flooding, that may affect general economic conditions; and

• the other factors that are described in Part II, Item 1A. of this Quarterly Report on Form 10-Q under the caption “Risk Factors.”

We urge you to consider all of these risks, uncertainties and other factors carefully in evaluating all such forward-looking statements we may make. As a result of these and other matters, including changes in facts, assumptions not being realized or other factors, the actual results relating to the subject matter of any forward-looking statement may different materially from the anticipated results expressed or implied in that forward-looking statement. Any forward-looking statement made by the Company in any report, filing, press release, document, report or announcement speaks only as of the date on which it is made. The Company undertakes no obligation to update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

A forward looking-statement may include a statement of the assumptions or bases underlying the forward-looking statement. The Company believes it has chosen these assumptions or bases in good faith and they are reasonable. However, the Company cautions you that assumptions or bases almost always vary from actual results, and the differences between assumptions or bases and actual results can be material. The Company undertakes no obligation to publicly update or otherwise revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Overview

This Management’s Discussion and Analysis of Financial Condition and Results of Operations analyzes the major elements of the Company’s financial condition and results of operation as reflected in the interim consolidated financial statements and accompanying notes appearing in this Quarterly Report on Form 10-Q. This section should be read in conjunction with the Company’s interim consolidated financial statements and accompanying notes included elsewhere in this report and with the consolidated financial statements for the year ended December 31, 2012 and accompanying notes and other detailed information appearing in the Company’s registration statement on Form S-1 (File No. 333-186912) filed with the SEC.

The Company was organized as a bank holding company in 2002. On January 1, 2009, we merged with Independent Bank Group Central Texas, Inc., and, since that time, we have pursued a strategy to create long-term shareholder value through organic growth of our community banking franchise in our market areas and through selective acquisitions of complementary banking institutions with operations in our market areas. On April 8, 2013, the Company consummated the initial public offering of its common stock for trading on the NASDAQ Global Market. As of September 30, 2013, the Company operated 29 full service banking locations; with 21 located in the Dallas/North Texas region and 8 located in the Austin/Central Texas region. The Company’s headquarters are located at 1600 Redbud, Suite 400, McKinney, Texas 75069 and its telephone number is (972) 562-9004. The Company’s website address is www.independent-bank.com. Information contained on the Company’s website is not incorporated by reference into this quarterly report on Form 10-Q and is not part of this or any other report.

Our principal business is lending to and accepting deposits from businesses, professionals and individuals. We conduct all of our banking operations through Independent Bank, which is a Texas state banking corporation and our principal subsidiary (the Bank). We derive our income principally from interest earned on loans and, to a lesser extent, income from securities available for sale. We also derive income from non-interest sources, such as fees received in connection with various deposit services and mortgage brokerage operations. From time to time, we also realize gains on the sale of assets and, in some instances, gains on acquisitions. Our principal expenses include interest expense on interest-bearing customer deposits, advances from the Federal Home Loan Bank of Dallas, or the FHLB, and other borrowings, operating expenses, such as salaries, employee benefits, occupancy costs, data processing and communication costs, expenses associated with other real estate owned, other administrative expenses, provisions for loan losses and our assessment for FDIC deposit insurance.

Certain Events Affect Year-over-Year Comparability

Acquisitions. The comparability of our consolidated results of operations for the periods ended September 30, 2013 and September 30, 2012 is affected by the two acquisitions we completed in 2012.   We acquired I Bank Holding Company (IBank) and its bank subsidiary, on April 1, 2012, and its results of operations were first included in our consolidated financial statements in the second quarter of 2012. As a result, the comparability of our consolidated results of operations for the nine-month periods ended September 30, 2013 and 2012 are affected by that acquisition. We acquired The Community Group (CGI) and its bank subsidiary on October 1, 2012, and its results of operations were first included in our consolidated results of operations in the fourth quarter of 2012. As a result, the comparability of our consolidated results of operations for the three-month and the nine-month periods ended September 30, 2013 and 2012 are affected by that acquisition.

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Our Initial Public Offering. We consummated the initial public offering of our common stock during the nine months ended September 30, 2013. The period-over-period comparability of certain aspects of our results of operations and the changes in our financial condition from December 31, 2012 to September 30, 2013 are affected by the issuance of 3,680,000 shares of our common stock issued in that offering and our receipt of the net proceeds of the sale of those shares of our common stock. In particular, the period-over-period comparability of our earnings per share is affected by such issuance of the shares in our initial public offering.

S Corporation Status. From our formation in 2002 through March 31, 2013, we  elected to be taxed for federal income tax purposes as a “Subchapter S corporation” under the provisions of Section 1361 through 1379 of the Internal Revenue Code. As a result, our net income was not  subject to, and we did not pay, U.S. federal income taxes and we were not required to make any provision or recognize any liability for federal income tax in our financial statements for the periods ending on or prior to March 31, 2013. We terminated our status as a “Subchapter S” corporation in connection with our initial public offering as of April 1, 2013. Starting April 1, 2013, we became subject to corporate federal income tax and our net income for each subsequent fiscal year and each subsequent interim period will reflect a provision for federal income taxes. As a result of that change in our status under the federal income tax laws, the net income and earnings per share data presented in our historical financial statements set forth elsewhere in this report, which do not include any provision for federal income taxes, are not comparable with our net income and earnings per share in periods in which we are taxed as a C corporation, which will be calculated by including a provision for federal income taxes. Although we were not subject to corporate federal income tax prior to April 1, 2013, we made periodic cash distributions to our shareholders in amounts estimated to be necessary for them to pay their estimated personal U.S. federal income tax liabilities related to the items of our income, gain, deductions and losses allocated to each of our shareholders.  The aggregate amount of such cash distributions has equaled 35% of our taxable income for the related period.  Our historical cash flows and financial condition have been affected by such cash distributions.  

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of the change in tax rates resulting from being a C corporation will be recognized in income in the quarter in which such change takes place. On April 1, 2013, the Company recorded an initial net deferred tax asset of $1.8 million to recognize the difference between the financial statement carrying amounts of assets and liabilities and their respective tax bases as of the date that the Company became a taxable corporate entity.

Discussion and Analysis of Results of Operations for the Three and Nine Months Ended September 30, 2013 and September 30, 2012

The following discussion and analysis of our results of operations compares our results of operations for the three months ended September 30, 2013 with the three months ended September 30, 2012 and our results of operations for the nine months ended September 30, 2013 with our results of operations for the nine months ended September 30, 2012. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of the results of operations that may be expected for all of the year ending December 31, 2013, in part because our results of operations for the three months ended March 31, 2013 that are included in our results of operations for the nine months ended September 30, 2013 do not include any provision for federal income taxes as do our results of operations for periods after March 31, 2013 and as will our results of operations for the remaining three months of the year ending December 31, 2013.

Results of Operations

Net income was $4.0 million ($0.33 per common share on a diluted basis) for the three months ended September 30, 2013 compared with $4.5 million ($0.57 per common share on a diluted basis) for the three months ended September 30 , 2012, in which three months we did not have any federal income tax expense. Pro forma after tax income for the three months ended September 30, 2012 was $3.0 million ($0.39 per common share on a diluted basis). The Company posted returns on average common equity of 7.30% and 15.96%, returns on average assets of 0.81% and 1.20% and efficiency ratios of 68.6% and 68.1% for the three-month periods ended September 30, 2013 and 2012, respectively. The efficiency ratio is calculated by dividing total noninterest expense (which does not include the provision for loan losses) by net interest income plus noninterest income.

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For the nine months ended September 30, 2013, net income was $15.5 million ($1.43 per common share on a diluted basis) compared with $11.3 million ($1.47 per common share on a diluted basis) for the nine months ended September 30, 2012. Pro forma after tax income for the nine months ended September 30, 2013 was $11.9 million ($1.10 per common share on a diluted basis) compared to $7.7 million ($1.00 per common share on a diluted basis) for the nine months ended September 30, 2012. The Company posted returns on average common equity of 10.85% and 14.62%, returns on average assets of 1.12% and 1.06% and efficiency ratios of 67.0% and 71.4% for the nine months ended September 30, 2013 and 2012, respectively.

Net Interest Income

Our net interest income is our interest income, net of interest expenses. Changes in the balances of our earning assets and our deposits, FHLB advances and other borrowings, as well as changes in the market interest rates, affect our net interest income. The difference between our average yield on earning assets and our average rate paid for interest-bearing liabilities is our net interest spread. Noninterest-bearing sources of funds, such as demand deposits and stockholders’ equity, also support our earning assets. The impact of the noninterest-bearing sources of funds is reflected in our net interest margin, which is calculated as annualized net interest income divided by average earning assets.

We earned net interest income of $18.9 million for the three months ended September 30, 2013, an increase of $3.7 million, or 24.8%, from $15.2 million for the three months ended September 30, 2012. This increase is primarily attributable to the $444 million, or 33.0%, increase in average interest-earning assets from $1.3 billion for the three months ended September 30, 2012 to $1.8 billion for the three months ended September 30, 2013 and a 31 basis point decrease in interest expense on interest bearing liabilities from the comparable prior year period. This increase occurred even though yields on interest-earnings assets for the three months ended September 30, 2013 decreased 61 basis points from the comparable period in 2012, primarily as the result of a 43 basis point decline in loan yields. The increase in average interest-earning assets is due to acquisition growth in the last quarter of 2012 as well as organic growth sustained in the first nine months of 2013 primarily related to the addition of experienced lending teams. The decrease in both the loan yields and the cost of funds of deposits is due to continued low rates and competition in the market.

Our net interest margin for the three months ended September 30, 2013 was 4.20% compared to 4.49% for the three months ended September 30, 2012. Our interest rate spread was 4.05% for the three months ended September 30, 2013 compared to 4.35% for the three months ended September 30, 2012. The decrease in the interest rate spread and the net interest margin was due to a combination of factors, including the weighted-average rate on average interest-earning assets declining by 61 basis points from 5.46% for the three months ended September 30, 2012 to 4.85% for the three months ended September 30, 2013. This decrease is primarily due to a 43 basis point decrease in loan yields and an increased balance in the federal reserve interest bearing account due to IPO proceeds that were not yet deployed.

Net interest income was $55.0 million for the nine months ended September 30, 2013, an increase of $13.2 million, or 31.7%, from $41.8 million for the same period in 2012. This increase is due primarily to a $432 million increase, or 34.1%, in average interest earning assets to $1.7 billion for the nine months ended September 30, 2013 compared to $1.3 billion for the nine months ended September 30, 2012.  In addition, discount accretion on acquired loans of $1.3 million and $98 thousand is included in net interest income for the nine months ended September 30 2013 and 2012, respectively. The significant increase in acquired loan accretion was primarily related tothe unexpected payoff of four loans. The net interest margin for the nine months ended September 30, 2013 decreased 8 basis points to 4.33% compared to 4.41% for the comparable period in 2012.The average yield on interest earning assets decreased 38 basis points from 5.45% to 5.07%. The effect of this decrease was offset by a decrease in the average rate paid on interest bearing liabilities of 29 basis points from 1.18% to 0.89%. The average yield on interest earning assets would have been 4.96% for the nine months ended September 30, 2013 compared to 5.44% for the nine months ended September 30, 2012 without the effect of the discount accretion on acquired loans.

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Average Balance Sheet Amounts, Interest Earned and Yield Analysis. The following table presents average balance sheet information, interest income, interest expense and the corresponding average yields earned and rates paid for the three and nine months ended September 30, 2013 and 2012. The average balances are principally daily averages and, for loans, include both performing and nonperforming balances.

	For The Three Months Ended September 30,
	2013						2012
	Average Outstanding Balance (2)		Interest		Yield/ Rate (1)		Average Outstanding Balance (2)		Interest		Yield/ Rate (1)
(dollars in thousands)
Interest-earning assets:
Loans	$	1,535,460	$	21,140	5.46	%	$	1,208,578	$	17,892	5.89	%
Taxable securities	91,075		358		1.56		74,339		288		1.54
Nontaxable securities	29,926		258		3.42		23,490		205		3.47
Federal funds sold and other	131,422		85		0.26		37,415		69		0.73
Total interest-earning assets	1,787,883		$	21,841	4.85		1,343,822		$	18,454	5.46
Noninterest-earning assets	154,981						143,603
Total assets	$	1,942,864					$	1,487,425
Interest-bearing liabilities:
Checking accounts	$	754,835	$	952	0.50		$	597,287	$	1,143	0.76
Savings accounts	113,321		94		0.33		111,719		172		0.61
Money market accounts	56,161		39		0.28		34,527		32		0.37
Certificates of deposit	332,405		632		0.75		277,489		723		1.04
Total deposits	1,256,722		1,717		0.54		1,021,022		2,070		0.81
FHLB advances	162,009		819		2.01		105,720		609		2.29
Notes payable and other borrowings	13,819		253		7.26		42,523		492		4.60
Junior subordinated debentures	18,147		137		3.00		14,538		128		3.50
Total interest-bearing liabilities	1,450,697		2,926		0.80		1,183,803		3,299		1.11
Noninterest-bearing checking accounts	266,334						185,038
Noninterest-bearing liabilities	10,652						6,557
Stockholders’ equity	215,181						112,027
Total liabilities and equity	$	1,942,864					$	1,487,425
Net interest income			$	18,915					$	15,155
Interest rate spread					4.05	%					4.35	%
Net interest margin (3)					4.20						4.49
Average interest earning assets to interest bearing liabilities					123.24						113.52

(1) Yields and rates for the three-month periods are annualized.

(2) Average loan balances include nonaccrual loans.

(3) Net interest margins for the periods presented represent: (i) the difference between interest income on interest-earning assets and the interest expense on interest-bearing liabilities, divided by (ii) average interest-earning assets for the period.

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	For The Nine Months Ended September 30,
	2013						2012
	Average Outstanding Balance (2)		Interest		Yield/ Rate (1)		Average Outstanding Balance (2)		Interest		Yield/ Rate (1)
(dollars in thousands)
Interest-earning assets:
Loans	$	1,467,960	$	62,347	5.68	%	$	1,118,586	$	49,898	5.96	%
Taxable securities	84,975		999		1.57		70,655		948		1.79
Nontaxable securities	31,464		765		3.25		22,800		604		3.54
Federal funds sold and other	113,906		256		0.30		54,060		226		0.56
Total interest-earning assets	1,698,305		$	64,367	5.07		1,266,101		$	51,676	5.45
Noninterest-earning assets	154,770						151,207
Total assets	$	1,853,075					$	1,417,308
Interest-bearing liabilities:
Checking accounts	$	723,561	$	2,861	0.53		$	552,889	$	3,423	0.83
Savings accounts	113,424		279		0.33		108,304		575		0.71
Money market accounts	50,125		103		0.27		32,600		95		0.39
Certificates of deposit	319,001		1,935		0.81		278,842		2,278		1.09
Total deposits	1,206,111		5,178		0.57		972,635		6,371		0.87
FHLB advances	163,702		2,475		2.02		96,688		1,696		2.34
Notes payable and other borrowings	20,826		1,326		8.51		40,824		1,466		4.80
Junior subordinated debentures	18,147		408		3.01		14,538		381		3.50
Total interest-bearing liabilities	1,408,786		9,387		0.89		1,124,685		9,914		1.18
Noninterest-bearing checking accounts	247,330						181,793
Noninterest-bearing liabilities	5,634						7,720
Stockholders’ equity	191,325						103,110
Total liabilities and equity	$	1,853,075					$	1,417,308
Net interest income			$	54,980					$	41,762
Interest rate spread					4.18	%					4.27	%
Net interest margin (3)					4.33						4.41
Average interest earning assets to interest bearing liabilities					120.55						112.57

(1) Yields and rates for the nine-month periods are annualized.

(2) Average loan balances include nonaccrual loans.

(3) Net interest margins for the periods presented represent: (i) the difference between interest income on interest-earning assets and the interest expense on interest-bearing liabilities, divided by (ii) average interest-earning assets for the period.

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Provision for Loan Losses

Management actively monitors the Company’s asset quality and provides specific loss provisions when necessary. Provisions for loan losses are charged to expense to bring the total allowance for loan losses to a level deemed appropriate by management based on such factors as historical loss experience, trends in classified loans and past dues, the volume and growth in the loan portfolio, current economic conditions and the value of collateral.

Loans are charged off against the allowance for loan losses when appropriate. Although management believes it uses the best information available to make determinations with respect to the provision for loan losses, future adjustments may be necessary if economic conditions differ from the assumptions used in making the determination.

The Company made a $830 thousand provision for loan losses for the three months ended September 30, 2013 and a $1.0 million provision for the three months ended September 30, 2012. The decrease reflects continued excellent asset quality and lower loan growth as compared to the same quarter in the prior year. Provision expense for the nine months ended September 30, 2013 was $2.9 million compared to $2.3 million for the comparable period in 2012. The increase for the current nine month period over the same period in the prior year was to properly reserve for the growth in our loan portfolio. Net charge-offs were $447 thousand for the three months ended September 30, 2013 compared to $6 thousand for the three months ended September 30, 2012. The increase is due primarily to the chargeoff of a $350 commercial loan during September 2013. Net charge-offs were $1,272 thousand for the nine months ended September 30, 2013 compared to $414 thousand for the nine months ended September 30, 2012. The increase in net charge-offs from the previous period was primarily related to the chargeoff in September discussed above and one large commercial real estate loan that was foreclosed during the period and charged down by $516 thousand prior to being transferred to other real estate.

Noninterest Income

The following table sets forth the major components of noninterest income for the three and nine months ended September 30, 2013 and 2012 and the period-over-period variations in such categories of noninterest income:

	For the Three Months Ended September 30,					Variance			For the Nine Months Ended September 30,					Variance
	2013		2012			2013 v. 2012			2013		2012			2013 v. 2012
(dollars in thousands)
Noninterest Income
Service charges on deposit accounts	$	1,248	$	826		$	422		$	3,597	$	2,473		$	1,124
Mortgage fee income	957		1,108			(151		)	3,120		2,965			155
Gain (loss) on sale of other real estate	—		(31		)	31			173		(75		)	248
Gain on sale of branch	—		51			(51		)	—		51			(51		)
Loss on sale of securities available for sale	—		—			—			—		(3		)	3
Gain (loss) on sale of premises and equipment	5		(1		)	6			4		(346		)	350
Increase in cash surrender value of bank owned life insurance	80		82			(2		)	240		245			(5		)
Other noninterest income	161		52			109			475		302			173
Total noninterest income	$	2,451	$	2,087		$	364		$	7,609	$	5,612		$	1,997

Total noninterest income increased $364 thousand, or 17.4% and $2.0 million, or 35.6% for the three and nine months ended September 30, 2013, respectively compared to the same periods in 2012. Changes in the components of noninterest income are discussed below:

Service charges. Service charges on deposit accounts for the three and nine months ended September 30, 2013 increased $422 thousand, or 51.1%, and $1.1 million, or 45.5%, compared to the comparable periods in 2012. The increase in each period primarily relates to ATM service fees which have previously been reported net of related expense and commencing in 2013 are being reported on a gross basis with offsetting expense being reported in noninterest expense, which expense is $258 and $856 thousand for the three and nine months ended September 30, 2013, respectively. In 2012, ATM fees were settled on a net basis.

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Mortgage fee income. Mortgage fee income for the three months ended September 30, 2013 decreased $151 thousand, or 13.6%, compared to the same period in 2012, while income for the nine-month period ended September 30, 2013 increased $155 thousand, or 5.2%, compared to the same nine-month period in 2012. The overall increase for the year to date periods is due to an increase in mortgage loan origination, although the activity in the third quarter of 2013 was lower than the same period in 2012 and the first six months of 2013 due to the increased interest rates during the quarter.

Gain (loss) on sale of other real estate. Other real estate gain of $173 thousand for the nine-month period ended September 30, 2013 is related to several sales of property including two sales of Adriatica property. In the comparable period in 2012, there was a loss of $75 thousand as a result of fewer transactions at the Bank and no sales of Adriatica property.

Loss on sale of premises and equipment. Loss on sale of premises and equipment decreased $350 thousand for the nine months ended September 30, 2013 from the comparable period in 2012 because the Company did not have any significant sales of premises and equipment in the current year period while it recognized a loss on the sale of the corporate aircraft in June 2012.

Other noninterest income. Other noninterest income increased $109 thousand, or 209.6% and $173 thousand, or 57.3%, for the three and nine months ended September 30, 2013, respectively, compared to the comparable periods in 2012. The increase is due to income received from increased non-bank usage of the Company airplane.

Noninterest Expense

The following table sets forth the major components of noninterest expense for the three and nine months ended September 30, 2013 and 2012 and the period-over-period variations in such categories of noninterest expense:

	For the Three Months Ended September 30,				Variance		For the Nine Months Ended September 30,				Variance
	2013		2012		2013 v. 2012		2013		2012		2013 v. 2012
(dollars in thousands)
Noninterest Expense
Salaries and employee benefits	$	7,976	$	6,653	$	1,323	$	23,688	$	18,910	$	4,778
Occupancy	2,117		1,821		296		6,562		5,315		1,247
Data processing	357		292		65		969		851		118
FDIC assessment	253		211		42		241		624		(383		)
Advertising and public relations	216		183		33		620		522		98
Communications	412		342		70		1,090		985		105
Other real estate owned expense, net	111		64		47		368		205		163
IBG Adriatica expenses, net	228		213		15		600		741		(141		)
Other real estate impairment	12		—		12		475		56		419
Core deposit intangible amortization	175		169		6		527		480		47
Professional fees	353		304		49		918		752		166
Acquisition expense, including legal	474		206		268		602		811		(209		)
Other	1,966		1,278		688		5,297		3,579		1,718
Total noninterest expense	$	14,650	$	11,736	$	2,914	$	41,957	$	33,831	$	8,126

Noninterest expense increased $2.9 million, or 24.8% and $8.1 million, or 24.0%, for the three and nine months ended September 30, 2013, respectively, compared to the same periods in 2012. The overall increase in each period from 2012 to 2013 is primarily due to increases in salaries and benefits expenses, occupancy expenses, and other noninterest expenses related to the two acquisitions completed in 2012.

Salaries and employee benefits. Salaries and employee benefits expense, which historically has been the largest component of our noninterest expense, increased $1.3 million, or 19.9% and $4.8 million, or 25.3% for the three and nine months ended September 30, 2013 compared to the same periods in 2012. The increase for each period was primarily attributable to an increase in the number of our full-time equivalent employees, which resulted from the two acquisitions we completed in 2012, as well as the addition of lending teams in our high growth markets during the second half of 2012 and third quarter 2013.

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Also contributing to the increase these periods is compensation expense relating to the issuance of 111,420 shares of restricted stock under the 2013 Equity Incentive Plan in connection with the recently completed initial public offering.

Occupancy expense. Occupancy expense increased $296 thousand, or 16.3% and $1.2 million, or 23.5% for the three and nine months ended September 30, 2013 compared to the same periods in 2012. The increase for each period resulted from higher maintenance contract expense, building lease expenses and property taxes, attributable primarily to the two acquisitions completed in 2012, and the establishment of our Dallas location in June 2012 and our new Austin building in May 2013.

FDIC assessment. FDIC assessment decreased $383 thousand for the nine months ended September 30, 2013 compared to the same period in 2012. The decrease is due to a non-recurring refund of $504 thousand of the Company's prepaid assessment during the second quarter of 2013. The change in FDIC assessment for the three months ended September 30, 2013 from the comparable three-month period in 2012 was an increase of $42 thousand, or 19.9% and is due to increased deposit levels for those time periods.

Other real estate impairment. Other real estate impairment totaling $12 and $475 thousand was recognized during the three and nine months ended September 30, 2013 compared to $0 and $56 thousand for the comparable periods in 2012. Approximately $225 thousand of the expense for the nine months ended September 30, 2013 was related to an ORE property located in the Austin, Texas area that was in negotiation to sell at a lower amount than the recorded book value. The remaining increase in the impairment for that period was recorded on two properties located in Frisco, Texas for which we had obtained updated appraisals. The impairment recognized in 2012 was related to the same Austin area property.

Acquisition expense. Acquisition expense increased $268 thousand, or 130.1% for the three months ended September 30, 2013 compared to the same period in 2012, while total acquisition expenses for the nine month period ended September 30, 2013 decreased $209 thousand, or 25.8% over the same period in 2012. The increase in the three months ended 2013 over the same period in 2012 is due to increased due diligence costs and professional fees relating to the two proposed acquisitions, which were announced by the Company in the third quarter of 2013. Acquisition expenses for the nine months ended September 30, 2012 is higher than the comparable period in 2013 primarily due to timing of the completed acquisitions in 2012, one in April 2012 and the other in October 2012. Both of the proposed acquisitions in the current year are expected to close in the fourth quarter of 2013 and therefore, the Company expects additional acquisition costs will be incurred in the fourth quarter of 2013.

Other. Other expense increased by $688 thousand, or 53.8% and $1.7 million, or 48.0% for the three and nine months ended September 30, 2013, respectively, compared to the comparable periods in 2012.  The majority of the increase in each period relates to ATM exchange fees which had settled on a net basis prior to 2013 and were recorded in noninterest income.  ATM expense was $258 thousand and $856 thousand for the three and nine months ended September 30, 2013, respectively. In addition, general operating expenses were higher in 2013 due to acquisitions completed in April and October 2012.

Income Tax Expense

As a result of our prior status as an S Corporation as discussed above, we had no federal tax expense for the quarters ended on or prior to March 31, 2013. The Company was not subject to income tax expense until April 1, 2013, the date which the Company became a taxable entity. For the three months ended September 30, 2013, income tax expense was $1.9 million, which is an effective tax rate of 32.7%. We have determined that had we been taxed as a C corporation and paid federal income taxes in the periods ended prior to April 1, 2013, our federal tax rates would have been 32.8% for the nine months ended September 30, 2013 and 32.2% for the three and nine months ended September 30, 2012. Included in the nine months ended September 30, 2013 is the initial deferred tax asset recorded on April 1, 2013 that resulted in a credit to income tax expense of $1.8 million. This resulted in reported income tax expense of $2.2 million for the nine months ended September 30, 2013. At September 30, 2013, the total recorded deferred tax asset totaled $2.9 million, of which $620 thousand relates to the unrealized loss on investment securities.

For the three months ended September 30, 2013, income tax expense was $1.9 million. On a pro forma basis, our federal income tax expense would have been $5.8 million for the nine months ended September 30, 2013, and $1.4 million and $3.6 million for the three and nine months ended September 30, 2012, resulting in pro forma net income, after federal taxes, for those periods of $11.9 million, $3.0 million, and $7.7 million, respectively.

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Discussion and Analysis of Financial Condition

Loan Portfolio

The following table presents the balance and associated percentage of each major category in our loan portfolio as of September 30, 2013 and December 31, 2012 (in thousands):

	September 30, 2013					December 31, 2012
Commercial	$	209,453		13.4	%	$	169,882		12.3	%
Real estate:
Commercial	768,427			49.3		648,494			47.0
Commercial construction, land and land development	95,661			6.1		97,329			7.1
Residential (1)	335,566			21.5		315,349			22.9
Single family interim construction	77,493			5.0		67,920			4.9
Agricultural	31,445			2.0		40,127			2.9
Consumer	41,747			2.7		39,502			2.9
Other	60			—		73			—
	1,559,852			100.0	%	1,378,676			100.0	%
Allowance for loan losses	(13,145		)			(11,478		)
	$	1,546,707				$	1,367,198

⁽¹⁾  Includes mortgage loans held for sale as of September 30, 2013 and December 31, 2012 of $4.3 million and $9.2 million, respectively.

Our loan portfolio is the largest category of our earning assets. As of September 30, 2013 and December 31, 2012, loans, net of allowance for loan losses, totaled $1.547 billion and $1.367 billion, respectively, which is an increase of 13.1%. The growth in the loan portfolio from December 31, 2012 to September 30, 2013 is primarily due to an increase in commercial and commercial real estate loan activity as a result of new lending teams, including experienced energy lenders, added during the second half of 2012.

Asset Quality

Nonperforming Assets. We have established procedures to assist us in maintaining the overall quality of our loan portfolio. In addition, we have adopted underwriting guidelines to be followed by our lending officers and require significant senior management review of proposed extensions of credit exceeding certain thresholds. When delinquencies exist, we rigorously monitor the levels of such delinquencies for any negative or adverse trends. Our loan review procedures include approval of lending policies and underwriting guidelines by the Bank's Board of Directors, an annual independent loan review, approval of large credit relationships by the Directors’ Loan Committee of the Bank and loan quality documentation procedures. We, like other financial institutions, are subject to the risk that our loan portfolio will be subject to increasing pressures from deteriorating borrower credit due to general economic conditions.

We discontinue accruing interest on a loan when management believes, after considering our collection efforts and other factors, that the borrower’s financial condition is such that collection of interest is doubtful. Loans are placed on nonaccrual status or charged off at an earlier date if collection of principal or interest is considered doubtful. All interest accrued but not collected for loans, including troubled debt restructurings, that are placed on nonaccrual status or charged off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Real estate we have acquired as a result of foreclosure or by deed-in-lieu-of foreclosure is classified as other real estate owned until sold.  The Bank’s policy is to initially record other real estate at fair value less estimated costs to sell at the date of foreclosure.  After foreclosure, other real estate is carried at the lower of the initial carrying amount (fair value less estimated costs to sell or lease), or at the value determined by subsequent appraisals of other real estate.

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We periodically modify loans to extend the term or make other concessions to help a borrower with a deteriorating financial condition stay current on their loan and to avoid foreclosure.  We generally do not forgive principal or interest on loans or modify the interest rates on loans to rates that are below market rates.  Under applicable accounting standards, such loan modifications are generally classified as troubled debt restructurings.

The following table sets forth the allocation of our nonperforming assets among our different asset categories as of the dates indicated. We classify nonperforming loans as nonaccrual loans, loans past due 90 days or more and still accruing interest or loans modified under restructurings as a result of the borrower experiencing financial difficulties. The balances of nonperforming loans reflect the net investment in these assets, including deductions for purchase discounts.

	September 30, 2013			December 31, 2012
(dollars in thousands)
Nonaccrual loans
Commercial	$	189		$	218
Real estate:
Commercial real estate, construction, land and land development	827			4,857
Residential real estate	1,816			894
Single-family interim construction	—			560
Consumer	43			70
Total nonaccrual loans	2,875			6,599
Loans delinquent 90 days or more and still accruing
Real estate:
Residential real estate	—			—
Consumer	—			2
Total loans delinquent 90 days or more and still accruing	—			2
Troubled debt restructurings, not included in nonaccrual loans
Commercial	114			481
Real estate:
Commercial real estate, construction, land and land development	3,102			1,778
Residential real estate	571			2,165
Consumer	1			9
Total troubled debt restructurings, not included in nonaccrual loans	3,788			4,433
Total nonperforming loans	6,663			11,034
Other real estate owned (Bank only):
Commercial real estate, construction, land and land development	8,092			6,166
Residential real estate	284			653
Total other real estate owned	8,376			6,819
Adriatica real estate owned	9,678			9,727
Total nonperforming assets	$	24,717		$	27,580
Ratio of nonperforming loans to total loans	0.43		%	0.81		%
Ratio of nonperforming assets to total assets	1.26		%	1.59		%

Nonaccrual loans decreased from $6.6 million as of December 31, 2012 to $2.9 million as of September 30, 2013. This decrease primarily resulted from the payoff of a $1.8 million loan that was on nonaccrual at December 31, 2012 and a foreclosure that resulted in the transfer of a $2.3 million nonaccrual loan to other real estate. That transfer also resulted in the increase in other real estate from December 31, 2012 to September 30, 2013.

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As of September 30, 2013, we had a total of 55 loans with an aggregate principal balance of $8.6 million that were not currently nonaccrual loans, 90 days past due loans or troubled debt restructurings, but where we had information about possible credit problems of the borrowers that caused our management to have serious concerns as to the ability of the borrowers to comply with present loan repayment terms and that could result in those loans becoming nonaccrual loans, 90 days past due loans or troubled debt restructurings in the future.

We generally continue to use the classification of acquired loans classified nonaccrual or 90 days and accruing as of the acquisition date.  We do not classify acquired loans as troubled debt restructurings, or TDRs, unless we modify an acquired loan subsequent to acquisition that meets the TDR criteria.  Reported delinquency of our purchased loan portfolio is based upon the contractual terms of the loans.

Allowance for Loan Losses. The allowance for loan losses is a reserve established through charges to earnings in the form of a provision for loan losses. Our allowance for loan losses represents our estimate of probable and reasonably estimable loan losses inherent in loans held for investment as of the respective balance sheet date. Our methodology for assessing the adequacy of the allowance for loan losses includes a general allowance for performing loans, which are grouped based on similar characteristics, and a specific allowance for individual impaired loans. Actual credit losses or recoveries are charged or credited directly to the allowance. As of September 30, 2013, the allowance for loan losses amounted to $13.1 million or 0.85% of total loans, compared with $11.5 million, or 0.84% of total loans at December 31, 2012.

The allowance for loan losses to nonperforming loans has increased from 104.02% at December 31, 2012 to 197.28% at September 30, 2013 due to the decrease in nonperforming loans from $11.0 million at December 31, 2012 to $6.7 million at September 30, 2013. The decrease in nonperforming loans was primarily due to the removal of the two same nonaccrual loans totaling $4.1 million that were discussed above. Although the allowance for loan losses to nonperforming loans has increased significantly, we do not expect to decrease our allowance as a percentage of total loans.  The allowance is primarily related to loans evaluated collectively and will continue to increase as our loan portfolio grows.

Securities Available for Sale

Our investment strategy aims to maximize earnings while maintaining liquidity in securities with minimal credit risk. The types and maturities of securities purchased are primarily based on our current and projected liquidity and interest rate sensitivity positions.

The Company had no gain or loss on sales of securities in the three and nine months ended September 30, 2013 or in the three months ended September 30, 2012. The Company recognized a nominal loss on sale of securities during the nine months ended September 30, 2012.

Securities represented 6.7% and 6.5% of our total assets at September 30, 2013 and December 31, 2012, respectively.

Management evaluates securities for other-than-temporary impairment (OTTI) on at least a quarterly basis and more frequently when economic of market conditions warrant such an evaluation. Management does not intend to sell any debt securities it holds and believes the Company more likely than not will not be required to sell any debt securities it holds before their anticipated recovery, at which time the Company will receive full value for the securities. Management has the ability and intent to hold the securities classified as available for sale that were in a loss position as of September 30, 2013 for a period of time sufficient for an entire recovery of the cost basis of the securities. For those securities that are impaired, the unrealized losses are largely due to interest rate changes. The fair value is expected to recover as the securities approach their maturity date. Management believes any impairment in the Company’s securities at September 30, 2013 is temporary and no impairment has been realized in the Company’s consolidated financial statements.

Capital Resources and Regulatory Capital Requirements

Total stockholder’s equity was $218.5 million at September 30, 2013 compared with $124.5 million at December 31, 2012, an increase of approximately $94 million. The increase was due primarily to the sale of 3,680,000 shares of common stock in connection with the Company's initial public offering, resulting in net proceeds of $86.6 million, stock awards amortization of $1.0 million and net income of $15.5 million earned by the Company for the nine months ended September 30, 2013, offset by dividends paid of $6.1 million, and a decrease in unrealized gain (loss) on available for sale securities of $3.1 million.

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Banking regulators measure capital adequacy by means of the risk-based capital ratio and leverage ratio.  The risk based capital rules provide for the weighting of assets and off-balance-sheet commitments and contingencies according to prescribed risk categories ranging from 0% to 100%.  Regulatory capital is then divided by risk weighted assets to determine the risk adjusted capital ratios.  The leverage ratio is computed by dividing shareholders’ equity less intangible assets by quarter-to-date average assets less intangible assets. As of September 30, 2013, we exceeded all capital ratio requirements under prompt corrective action and other regulatory requirements, as detailed in the table below:

	September 30, 2013
	Actual	Required to be considered well capitalized	Required to be considered adequately capitalized
	Ratio	Ratio	Ratio
Tier 1 capital to average assets ratio	10.74%	5.00%	4.00-5.00%
Tier 1 capital to risk-weighted assets ratio	13.72%	6.00%	4.00-6.00%
Total capital to risk-weighted assets ratio	15.05%	10.00%	8.00-10.00%

Liquidity Management

We continuously monitor our liquidity position to ensure that assets and liabilities are managed in a manner that will meet all of our short-term and long-term cash requirements. We manage our liquidity position to meet the daily cash flow needs of customers, while maintaining an appropriate balance between assets and liabilities to meet the return on investment objectives of our shareholders. We also monitor our liquidity requirements in light of interest rate trends, changes in the economy, and the scheduled maturity and interest rate sensitivity of the investment and loan portfolios and deposits.

Liquidity risk management is an important element in our asset/liability management process. Our short-term and long-term liquidity requirements are primarily to fund on-going operations, including payment of interest on deposits and debt, extensions of credit to borrowers, capital expenditures and shareholder dividends. These liquidity requirements are met primarily through cash flow from operations, redeployment of pre-paid and maturing balances in our loan and investment portfolios, debt financing and increases in customer deposits. Our liquidity position is supported by management of liquid assets and liabilities and access to alternative sources of funds. Liquid assets include cash, interest-bearing deposits in banks, federal funds sold, unpledged securities available for sale and maturing or prepaying balances in our investment and loan portfolios. Liquid liabilities include core deposits, federal funds purchased, securities sold under repurchase agreements and other borrowings. Other sources of liquidity include the sale of loans, the ability to acquire additional national market noncore deposits, the issuance of additional collateralized borrowings such as FHLB advances, the issuance of debt securities, borrowings through the Federal Reserve’s discount window and the issuance of equity securities.

In addition to the liquidity provided by the sources described above, the Bank maintains correspondent relationships with other banks in order to sell loans or purchase overnight funds should additional liquidity be needed. As of September 30, 2013, the Bank had established federal funds lines of credit with an unaffiliated bank totaling $40 million with no amounts advanced against those lines at that time. Based on the values of stock, securities, and loans pledged as collateral, as of September 30, 2013, we had $266 million of additional borrowing capacity with the FHLB.

Contractual Obligations

In the ordinary course of our operations, we enter into certain contractual obligations, such as obligations for operating leases and other arrangements with respect to deposit liabilities, FHLB advances and other borrowed funds. We believe that we will be able to meet our contractual obligations as they come due through the maintenance of adequate cash levels. We expect to maintain adequate cash levels through profitability, loan and securities repayment and maturity activity and continued deposit gathering activities. We have in place various borrowing mechanisms for both short-term and long-term liquidity needs.

During the nine months ended September 30, 2013, the Company repaid all of our outstanding notes payable, which had an aggregate outstanding principal amount of $15.7 million, and a portion of our subordinated debt having an aggregate principal amount of $13.1 million. Other than these payoffs and normal changes in the ordinary course of business, there have been no significant changes in the types of contractual obligations or amounts due since December 31, 2012.

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Off-Balance Sheet Arrangements

In the normal course of business, we enter into various transactions, which, in accordance with accounting principles generally accepted in the United States, are not included in our consolidated balance sheets. However, we have only limited off-balance sheet arrangements that have, or are reasonably likely to have, a current or future material effect on our financial condition, revenues, expenses, results of operations, liquidity, capital expenditures or capital resources. The Bank enters into these transactions to meet the financing needs of our customers. These transactions include commitments to extend credit and issue standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets.

Commitments to Extend Credit. The Bank enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of the Bank’s commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. The Bank minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures.

Standby Letters of Credit. Standby letters of credit are written conditional commitments that the Bank issues to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Bank would be required to fund the commitment. The maximum potential amount of future payments the Bank could be required to make is represented by the contractual amount of the commitment. If the commitment is funded, the customer is obligated to reimburse the Bank for the amount paid under this standby letter of credit.

The Bank’s commitments to extend credit and outstanding standby letters of credit were $286.6 million and $2.2 million, respectively, as of September 30, 2013. The increase in total off-balance sheet arrangements since December 31, 2012 was primarily due to increased commitment activity in the energy lending segment of the portfolio. Since commitments associated with letters of credit and commitments to extend credit may expire unused, the amounts shown do not necessarily reflect the actual future cash funding requirements. We manage our liquidity in light of the aggregate amounts of commitments to extend credit and outstanding standby letters of credit in effect from time to time to ensure that we will have adequate sources of liquidity to fund such commitments and honor drafts under such letters of credit.

Pending Acquisitions

On July 18, 2013, we entered into an Agreement and Plan of Reorganization (the “Collin Merger Agreement”) with Collin Bank, a Texas state banking association (“Collin Bank”), pursuant to which a newly formed subsidiary of the Company would merge with and into Collin Bank and Collin Bank would continue as the surviving entity (the "Collin Merger"). Subsequent to that merger, we would merge Collin Bank into the Bank. Pursuant to the terms of the Collin Merger Agreement, the holders of all of the outstanding shares of Collin Bank common stock would receive consideration equal to approximately $10.00 per share of Collin Bank common stock, which would be payable approximately 65% in cash, and approximately 35% payable in shares of our common stock, although the aggregate number of shares of our common stock issued to the Collin Bank shareholders will not exceed 300,000 shares. Based on the number of shares of Collin Bank stock currently outstanding, the amount of total consideration to be paid by us is currently valued at approximately $29.1 million. The number of shares of our common stock to be issued to the Collin Bank shareholders in the Merger will be determined in connection with the closing of the Merger, and will be calculated based upon the average of the daily average sale price per share of our common stock on the NASDAQ Global Select Market for the 20 consecutive trading days ending and including the third trading day preceding the closing date of the Collin Merger Agreement. The Collin Merger Agreement sets forth certain adjustments that would occur to the amount of the cash to be paid for the Collin Bank shares in the event the total number of shares of our common stock to be issued would otherwise exceed 300,000 shares. The transaction is subject to certain conditions, including the receipt of regulatory approvals, approval of Collin Bank's shareholders, and the satisfaction of other customary closing conditions. The Collin Merger has been approved by our board of directors and the board of directors of Collin Bank.

On August 22, 2013, we entered into an Agreement and Plan of Reorganization (the “Live Oak Merger Agreement”) with Live Oak Financial Corp., a Texas corporation (“Live Oak”), pursuant to which IBGCO Acquisition Corporation, a proposed Texas corporation and wholly owned subsidiary of the Company (“Newco”), would merge with and into Live Oak and Live Oak would continue as the surviving entity (the “Live Oak Merger”). Subsequent to the Live Oak Merger, the Company would affect the merger of Live Oak with and into the Company and the merger of Live Oak State Bank, a Texas state banking association and wholly owned subsidiary of Live Oak, with and into the Bank, with the Bank continuing as the surviving bank. Under the terms of the Live Oak Merger Agreement, the Company will pay aggregate cash consideration of $10 million and issue approximately 292,646 shares of Company common stock, resulting in an aggregate value of approximately $20 million.

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The number of shares of Company common stock can be adjusted up or down if the volume weighted average price of the Company common stock during the twenty trading days prior to closing is 10% more or 10% less than $34.18 per share, such that the maximum value of the Company common stock at closing would be approximately $11 million and the minimum value of the the Company common stock would be approximately $9 million. The aggregate cash consideration can also be adjusted downward if the tangible book value of Live Oak is less than $13 million at closing. The Live Oak Merger is subject to certain conditions, including the receipt of regulatory approvals, approval of Live Oak’s shareholders, and the satisfaction of other customary closing conditions. The Live Oak Merger has been approved by the Boards of Directors of the Company and Live Oak.

We expect both mergers to be consummated in the fourth quarter of 2013. If the mergers are consummated, our results of operations and financial condition as reflected in our consolidated financial statements and the accompanying notes appearing in this Quarterly Report on Form 10-Q and in other reports we have filed or may file with the SEC prior to the consummation of the mergers may not be indicative of our future results of operations and financial condition for periods and as of dates following the consummation of the mergers.

Critical Accounting Policies and Estimates

The preparation of our consolidated financial statements in accordance with U.S. generally accepted accounting principles, or GAAP, requires us to make estimates and judgments that affect our reported amounts of assets, liabilities, income and expenses and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under current circumstances, results of which form the basis for making judgments about the carrying value of certain assets and liabilities that are not readily available from other sources. We evaluate our estimates on an ongoing basis. Actual results may differ from these estimates under different assumptions or conditions.

Accounting policies, as described in detail in the notes to our consolidated financial statements, are an integral part of our financial statements. A thorough understanding of these accounting policies is essential when reviewing our reported results of operations and our financial position. We believe that the critical accounting policies and estimates discussed below require us to make difficult, subjective or complex judgments about matters that are inherently uncertain. Changes in these estimates, that are likely to occur from period to period, or the use of different estimates that we could have reasonably used in the current period, would have a material impact on our financial position, results of operations or liquidity.

Allowance for Loan Losses. The allowance for loan losses represents management’s estimate of probable and reasonably estimable credit losses inherent in the loan portfolio. In determining the allowance, we estimate losses on individual impaired loans, or groups of loans which are not impaired, where the probable loss can be identified and reasonably estimated. On a quarterly basis, we assess the risk inherent in our loan portfolio based on qualitative and quantitative trends in the portfolio, including the internal risk classification of loans, historical loss rates, changes in the nature and volume of the loan portfolio, industry or borrower concentrations, delinquency trends, detailed reviews of significant loans with identified weaknesses and the impacts of local, regional and national economic factors on the quality of the loan portfolio. Based on this analysis, we record a provision for loan losses in order to maintain the allowance at appropriate levels.

Determining the amount of the allowance is considered a critical accounting estimate, as it requires significant judgment and the use of subjective measurements, including management’s assessment of overall portfolio quality. We maintain the allowance at an amount we believe is sufficient to provide for estimated losses inherent in our loan portfolio at each balance sheet date, and fluctuations in the provision for loan losses may result from management’s assessment of the adequacy of the allowance. Changes in these estimates and assumptions are possible and may have a material impact on our allowance, and therefore our financial position, liquidity or results of operations.

Goodwill and Core Deposit Intangible. The excess purchase price over the fair value of net assets from acquisitions, or goodwill, is evaluated for impairment at least annually and on an interim basis if an event or circumstance indicates that it is likely an impairment has occurred. Prior to 2012, the evaluation of goodwill impairment was a two-step test. Effective January 1, 2012, the Company has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two step impairment test is unnecessary. If the Company concludes otherwise, then it is required to perform the first step of the two step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. The Company performs it impairment test annually as of December 31. There have been no circumstances since December 31, 2012 that would indicate any impairment has occurred, therefore, management does not believe goodwill is impaired as of September 30, 2013.

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ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The principal objective of the Company’s asset and liability management function is to evaluate the interest rate risk within the balance sheet and pursue a controlled assumption of interest rate risk while maximizing net income and preserving adequate levels of liquidity and capital. The Investment Committee of the Bank’s Board of Directors has oversight of our asset and liability management function, which is managed by our Chief Financial Officer. Our Chief Financial Officer meets with our senior executive management team regularly to review, among other things, the sensitivity of the Company’s assets and liabilities to market interest rate changes, local and national market conditions and market interest rates. That group also reviews the liquidity, capital, deposit mix, loan mix and investment positions of our Company.

Our management and our Board of Directors are responsible for managing interest rate risk and employing risk management policies that monitor and limit our exposure to interest rate risk. Interest rate risk is measured using net interest income simulations and market value of portfolio equity analyses. These analyses use various assumptions, including the nature and timing of interest rate changes, yield curve shape, prepayments on loans, securities and deposits, deposit decay rates, pricing decisions on loans and deposits, reinvestment/replacement of asset and liability cash flows.

Instantaneous parallel rate shift scenarios are modeled and utilized to evaluate risk and establish exposure limits for acceptable changes in net interest margin. These scenarios, known as rate shocks, simulate an instantaneous change in interest rates and use various assumptions, including, but not limited to, prepayments on loans and securities, deposit decay rates, pricing decisions on loans and deposits, reinvestment and replacement of asset and liability cash flows.

We also analyze the economic value of equity as a secondary measure of interest rate risk. This is a complementary measure to net interest income where the calculated value is the result of the market value of assets less the market value of liabilities. The economic value of equity is a longer term view of interest rate risk because it measures the present value of the future cash flows. The impact of changes in interest rates on this calculation is analyzed for the risk to our future earnings and is used in conjunction with the analyses on net interest income.

We conduct periodic analyses of our sensitivity to interest rate risks through the use of a third-party proprietary interest-rate sensitivity model provided by ALX Consulting, Inc., or ALX, an affiliate of TIB-The Texas Independent Bankers Bank. That model has been customized to our specifications. The analyses conducted by use of that model are based on current information regarding our actual interest-earnings assets, interest-bearing liabilities, capital and other financial information that we supply. ALX uses that information in the model to estimate our sensitivity to interest rate risk.

Our interest rate risk model indicated that we were liability sensitive in terms of interest rate sensitivity as of September 30, 2013. The table below illustrates the impact of an immediate and sustained 200 and 100 basis point increase and a 100 basis point decrease in interest rates on net interest income based on the interest rate risk model as of September 30, 2013:

Hypothetical Shift in Interest Rates (in bps)	% Change in Projected Net Interest Income
200	(0.5)%
100	(0.6)%
(100)	1.9%

These are good faith estimates and assume that the composition of our interest sensitive assets and liabilities existing at each year-end will remain constant over the relevant twelve month measurement period and that changes in market interest rates are instantaneous and sustained across the yield curve regardless of duration of pricing characteristics of specific assets or liabilities. Also, this analysis does not contemplate any actions that we might undertake in response to changes in market interest rates. We believe these estimates are not necessarily indicative of what actually could occur in the event of immediate interest rate increases or decreases of this magnitude. As interest-bearing assets and liabilities re-price in different time frames and proportions to market interest rate movements, various assumptions must be made based on historical relationships of these variables in reaching any conclusion. Since these correlations are based on competitive and market conditions, we anticipate that our future results will likely be different from the foregoing estimates, and such differences could be material.

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ITEM 4.CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures. An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q was performed under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective to provide reasonable assurance that information required to be disclosed by the Company in the reports that it files or submits under the Securities Exchange Act of 1934, as amended, is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure and are effective to provide reasonable assurance that such information is recorded, processed, summarized and reported within the time periods specified by the SEC's rules and forms.

Changes in internal control over financial reporting. There were no changes in the Company’s internal control over financial reporting during the three and nine months ended September 30, 2013 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

The Bank is currently subject to the following legal proceedings:

The Bank is subject to a legal proceeding related to the Bank’s foreclosure on May 3, 2011, of real property securing a loan, and involves a title dispute between an adjacent property owner and the former borrower/owner of the foreclosed property. The dispute resulted in Field Street Development I, Ltd, Flct, Ltd, Flla, Ltd, Flsc, Ltd and Flst, Ltd filing a lawsuit in the 219th District Court of Texas on May 20, 2010, against Harold Holigan and Melissa Land Partners, Ltd, and joining the Bank and Holigan Land Development, Ltd. on or about July 21, 2011. The Bank is vigorously defending this action. Further, the Bank has submitted a claim to the title company that issued a title insurance policy with respect to the foreclosed property. The title company is currently paying the Bank's costs of defense. The Bank believes that its potential loss if the plaintiff prevails would be approximately $1.0 million. If the Bank becomes responsible for the payment of any damages or other amounts as a result of this proceeding, the Bank would pursue its claim against the title company for this amount.

The Bank is subject to a legal proceeding related to a lending relationship inherited by the Bank in connection with the acquisition of The Community Group, Inc. and its subsidiary, United Community Bank N.A., or UCB that was consummated effective October 1, 2012. UCB established a $350,000 line of credit for a guarantor to pay for deficiencies arising from loans made to a related borrower. John Ganter, the guarantor, filed a lawsuit on November 21, 2012, in the 298th District Court of Texas alleging fraud by UCB seeking a restraining order to prevent the Bank from realizing on the collateral securing the line of credit and a judgment that the line of credit is unenforceable. The court denied the plaintiff’s request for a temporary injunction, the restraining order lapsed, and the Bank foreclosed on and sold the collateral to satisfy the line of credit. The Bank has filed a counterclaim against the plaintiff for deficiencies on other indebtedness guaranteed by the plaintiff and for payment of legal fees. The Bank is preparing a motion for summary judgment and otherwise continues to defend this lawsuit.

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Item 1A. Risk Factors

In evaluating an investment in our common stock, investors should consider carefully, among other things, the risk factors previously disclosed in Part II, Item 1A of our Quarterly Report on Form 10‑Q for the quarters ended March 31, 2013 and June 30, 2013, as well as the information contained in this Quarterly Report and our other reports and registrations statements filed with the SEC. The risk factors below relate to our previously announced acquisition of Live Oak Financial Corp. and its wholly owned subsidiary, Live Oak State Bank ("Live Oak Bank") and are an addition to the risk factors previously disclosed in our Form 10‑Q for the quarters ended March 31, 2013 and June 30, 2013.

Integrating Live Oak Bank into our operations may be more difficult, costly or time-consuming than we expect.

The Company and Live Oak Bank have operated and, until the Live Oak Merger is completed, will continue to operate, independently. Accordingly, it is possible that the process of integrating Live Oak Bank's operations into the Bank's operations could result in the disruption of operations, the loss of Live Oak Bank customers and employees, and make it more difficult to achieve the intended benefits of the Live Oak Merger. Specifically, inconsistencies between the standards, controls, procedures and policies of the Bank and those of Live Oak Bank could adversely affect our ability to maintain relationships with current customers and employees of Live Oak Bank if and when the Live Oak Merger is completed. Further, as with any merger of banking institutions, there also may be business disruptions that may cause us to lose customers or may cause customers to withdraw their deposits from Live Oak Bank prior to the Live Oak Merger's consummation and from the Bank thereafter. The realization of the anticipated benefits of the Live Oak Merger may depend in large part on our ability to integrate Live Oak Bank's operations into the Bank's operations, and to address differences in business models and cultures. Moreover, the combined effect of integrating the acquisition of Collin Bank and Live Oak Bank, both of which are expected to be completed in the fourth quarter of 2013 with most of the integration activities expected to occur in the first quarter of 2014, may stretch the Company’s management and could result in the Company experiencing operational difficulties in such integrations. If we are not able to integrate the operations of Live Oak Bank into the Bank's operations successfully and timely, some or all of the expected benefits of the Live Oak Merger may not be realized.

We may fail to realize the cost savings anticipated with respect to the Live Oak Merger.

Although we anticipate that we will realize certain cost savings as to the Live Oak Bank operations and otherwise from the Live Oak Merger if and when the Live Oak Bank operations are fully integrated into the Bank's operations, it is possible that we may not realize all of the cost savings we have estimated we can realize. For example, unanticipated growth in our business may require the Company to continue to operate or maintain some facilities or support functions that are currently expected to be combined or reduced. Our cost savings estimates also depend on our ability to combine the operations of the Bank and Live Oak Bank in a manner that permits those costs savings to be realized. If our estimates turn out to be inaccurate or we are not able to integrate Live Oak Bank's operations into the Bank's operations successfully, the anticipated cost savings may not be fully realized, if at all, or may take longer to realize than expected.

The consummation of the Live Oak Merger is subject to the satisfaction of various conditions in favor of the respective parties, any one of which may not be satisfied and could give rise to a right of termination.

The consummation of the transactions contemplated by the Live Oak Merger Agreement is subject to the satisfaction of various conditions in favor of the respective parties, such as the receipt of shareholder and regulatory approvals and the absence of a material adverse change in the condition of Live Oak Bank or the Company. If a condition to the obligation of a party to consummate the Live Oak Merger is not satisfied, that party will be able to terminate the acquisition agreement and, in such case, the Live Oak Merger would not be consummated.

Regulatory approvals may not be received, may take longer than expected or impose conditions that are not presently anticipated.

The Federal Reserve must approve, or waive approval of, the Live Oak Merger and the Federal Deposit Insurance Corporation, or FDIC, and the Texas Department of Banking, or TDB, must approve the Live Oak Merger and the subsequent merger of Live Oak Bank with and into the Bank. The Federal Reserve, FDIC and TDB will consider, among other factors, the competitive impact of the Live Oak Merger and the bank merger, the financial and managerial resources of the Company and Live Oak Bank and the convenience and needs of the communities to be served. As part of that consideration, the Company expects that the Federal Reserve, FDIC and TDB will review issues related to capital position, safety and soundness, and legal and regulatory compliance, including compliance with anti-money laundering laws. There can be no assurance as to whether these and other regulatory approvals will be received, the timing of those approvals or whether any conditions will be imposed.

47

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

On April 2, 2013, our registration statement on Form S-1 (File No. 333-186912), which related to our initial public offering, was declared effective by the SEC. Pursuant to that registration statement, we sold an aggregate of 3,680,000 shares of our common stock, $0.01 par value per share, at a price to the public of $26.00 per share. The net proceeds to us of the sale of such shares, after underwriting commissions and offering expenses, were $87.2 million (the “Net Proceeds”). There has been no material change in the planned use of proceeds from our initial public offering as described in our final prospectus filed with the SEC on April 3, 2013 pursuant to Rule 424(b). Through November 5, 2013, we have applied a total of $28 million of the Net Proceeds to the repayment of two senior notes totaling $11.6 million, subordinated debt totaling $12.9 million and IBG Adriatica debt of $3.5 million.

Item 3. Defaults Upon Senior Securities

Not applicable

Item 4. Mine Safety Disclosures

None

Item 5. Other Information

None

48

Item 6. Exhibits

The following documents are filed as exhibits to this Quarterly Report on Form 10-Q:

Exhibit 2.1	Agreement and Plan of Reorganization by and between Independent Bank Group, Inc. and Collin Bank dated as of July 18, 2013 which is incorporated by reference to Exhibit Number 2.1 to Registration Statement on Form S-4 of Independent Bank Group, Inc. filed with the SEC on August 30, 2013.
Exhibit 2.2	Agreement and Plan of Reorganization by and between Independent Bank Group, Inc. and Live Oak Financial Corp. dated as of August 22, 2013 which is incorporated by reference to Exhibit Number 2.1 to Registration Statement on Form S-4 of Independent Bank Group, Inc. filed on October 10, 2013.
Exhibit 3.1	Amended and Restated Certificate of Formation of Independent Bank Group, Inc., which is incorporated herein by reference to Exhibit 3.1 to Registration Statement on Form S-1 of Independent Bank Group, Inc. filed with the SEC on February 27, 2013.
Exhibit 3.2	Certificate of Amendment to Amended and Restated Certificate of Formation of Independent Bank Group, Inc., which is incorporated herein by reference to Exhibit 3.3 to Amendment No. 2 to Registration Statement on Form S-1 of Independent Bank Group, Inc. filed with the SEC on April 1, 2013.
Exhibit 3.3	Amended and Restated Bylaws of Independent Bank Group, Inc., which are incorporated herein by reference to Exhibit 3.2 to Amendment No. 1 to Registration Statement on Form S-1 of Independent Bank Group, Inc. filed with the SEC on March 18, 2013.
Exhibit 31.1*	Chief Executive Officer Section 302 Certification
Exhibit 31.2*	Chief Financial Officer Section 302 Certification
Exhibit 32.1**	Chief Executive Officer Section 906 Certification
Exhibit 32.2**	Chief Financial Officer Section 906 Certification
Exhibit 101.INS +	XBRL Instance Document
Exhibit 101.SCH +	XBRL Taxonomy Extension Schema Document
Exhibit 101.CAL +	XBRL Taxonomy Extension Calculation Linkbase Document
Exhibit 101.DEF +	XBRL Taxonomy Extension Definition Linkbase Document
Exhibit 101.LAB +	XBRL Taxonomy Extension Label Linkbase Document
Exhibit 101.PRE +	XBRL Taxonomy Extension Presentation Linkbase Document

* Filed herewith as an Exhibit.

** Furnished herewith as an Exhibit.

+ Furnished with this Quarterly Report on Form 10-Q and not deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, in accordance with Rule 406T of Regulation S-T.

49

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.

	Independent Bank Group, Inc.
Date: November 5, 2013	By: /s/ David R. Brooks
	David R. Brooks
	Chairman and Chief Executive Officer

Date: November 5, 2013	By: /s/ Michelle S. Hickox
	Michelle S. Hickox
	Executive Vice President
	Chief Financial Officer

50

EX-31.1

Exhibit 31.1

I, David R. Brooks, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Independent Bank Group, Inc. (the “registrant”);

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

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

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

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

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

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

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

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 control over financial reporting.

Date: November 5, 2013	/s/ David R. Brooks
	David R. Brooks Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

I, Michelle S. Hickox, certify that:

1.   I have reviewed this Quarterly Report on Form 10-Q of Independent Bank Group, Inc. (the “registrant”);

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

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

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

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

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

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

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

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 control over financial reporting.

Date: November 5, 2013	/s/ Michelle S. Hickox
	Michelle S. Hickox Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

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 of Independent Bank Group, Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David R. Brooks, Chairman and Chief Executive Officer of the Company, certify to my knowledge and in my capacity as an officer of the Company, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods expressed in the Report.

IN WITNESS WHEREOF, the undersigned has executed this Certificate, effective as of November 5, 2013.

/s/ David R. Brooks

David R. Brooks

Chairman and Chief Executive Officer

EX-32.2

Exhibit 32.2

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 of Independent Bank Group, Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michelle S. Hickox, Executive Vice President and Chief Financial Officer of the Company, certify to my knowledge and in my capacity as an officer of the Company, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods expressed in the Report.

IN WITNESS WHEREOF, the undersigned has executed this Certificate, effective as of November 5, 2013.

/s/ Michelle S. Hickox

Michelle S. Hickox

Executive Vice President and Chief Financial Officer

XML

Stock Awards and Stock Warrants

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Awards and Stock Warrants

Stock Awards and Stock Warrants

The Company grants common stock awards to certain employees of the Company. The common stock issued prior to 2013 vests five years from the date the award is granted and the related compensation expense is recognized over the vesting period. In connection with the initial public offering in April 2013, the Board of Directors adopted a new 2013 Equity Incentive Plan. The Plan reserved 800,000 shares of common stock to be awarded by the Company’s compensation committee. The shares issued under the 2013 Plan are restricted and will vest evenly over a five year employment period. Shares granted prior to 2012 and those in 2013 were issued at the date of grant and receive dividends. Shares issued under a revised plan in 2012 are not outstanding shares of the Company until they vest and do not receive dividends.

The following table summarizes the activity in nonvested shares for the nine months endedSeptember 30, 2013 and 2012:

	Number of Shares		Weighted Average Grant Date Price
Nonvested shares, December 31, 2012	208,608		$	17.07
Granted during the period	119,540		28.68
Vested during the period	(22,716	)	14.30
Nonvested shares, September 30, 2013	305,432		$	22.16
Nonvested shares, December 31, 2011	180,025		$	15.64
Granted during the period	36,960		20.31
Vested during the period	(29,977	)	14.76
Nonvested shares, September 30, 2012	187,008		$	16.70

Compensation expense related to these awards was $455 and $1,049 for the three and nine months ended September 30, 2013, respectively and $156 and $446 for the three and nine months ended September 30, 2012, respectively. Compensation expense is recorded in salaries and employee benefits in the accompanying consolidated statements of income. At September 30, 2013, future compensation expense is estimated to be $4,147 and will be recognized over a remaining weighted average period of 2.64 years.

The fair value of common stock awards that vested during the nine months endedSeptember 30, 2013 and 2012 was $641 and $609, respectively.

The Company has issued warrants representing the right to purchase 150,544 shares of Company stock at $17.19 per share to certain Company directors and shareholders. The warrants were issued in return for the shareholders agreement to repurchase the subordinated debt outstanding to an unaffiliated bank in the event of Company default. The warrants expire in December 2018 and were recorded at a fair value of $475 as of the date of the warrants issuance. The Company recorded this amount as debt origination costs and was amortizing it over the term of the debt. In April 2013, the Company paid off the subordinated debt and wrote off the remaining balance of $223 of the debt origination costs to interest expense.

XML

Fair Value Measurements-Contingent Consideration Related to Acquisition of Town Center Bank (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Contingent Consideration [Roll Forward]
Beginning balance	$ 290	$ 821
Settlements	(287)	(393)
Change in estimated payments to be made	(3)	(2)
Ending balance	$ 0	$ 426

XML

Consolidated Statements of 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:
Interest and fees on loans	$ 21,140	$ 17,892	$ 62,347	$ 49,898
Interest on taxable securities	358	288	999	948
Interest on nontaxable securities	258	205	765	604
Interest on federal funds sold and other	85	69	256	226
Total interest income	21,841	18,454	64,367	51,676
Interest expense:
Interest on deposits	1,717	2,070	5,178	6,371
Interest on FHLB advances	819	609	2,475	1,696
Interest on notes payable and other borrowings	253	492	1,326	1,466
Interest on junior subordinated debentures	137	128	408	381
Total interest expense	2,926	3,299	9,387	9,914
Net interest income	18,915	15,155	54,980	41,762
Provision for loan losses	830	1,013	2,939	2,255
Net interest income after provision for loan losses	18,085	14,142	52,041	39,507
Noninterest income:
Service charges on deposit accounts	1,248	826	3,597	2,473
Mortgage fee income	957	1,108	3,120	2,965
Gain (loss) on sale of other real estate	0	(31)	173	(75)
Gain on sale of branch	0	51	0	51
Loss on sale of securities available for sale	0	0	0	(3)
Gain (loss) on sale of premises and equipment	5	(1)	4	(346)
Increase in cash surrender value of BOLI	80	82	240	245
Other	161	52	475	302
Total noninterest income	2,451	2,087	7,609	5,612
Noninterest expense:
Salaries and employee benefits	7,976	6,653	23,688	18,910
Occupancy	2,117	1,821	6,562	5,315
Data processing	357	292	969	851
FDIC assessment	253	211	241	624
Advertising and public relations	216	183	620	522
Communications	412	342	1,090	985
Net other real estate owned expenses (including taxes)	111	64	368	205
Operations of IBG Adriatica, net	228	213	600	741
Other real estate impairment	12	0	475	56
Core deposit intangible amortization	175	169	527	480
Professional fees	353	304	918	752
Acquisition expense, including legal	474	206	602	811
Other	1,966	1,278	5,297	3,579
Total noninterest expense	14,650	11,736	41,957	33,831
Income before taxes	5,886	4,493	17,693	11,288
Income tax expense	1,927	0	2,172	0
Net income	3,959	4,493	15,521	11,288
Basic earnings per share (usd per share)	$ 0.33	$ 0.57	$ 1.44	$ 1.47
Diluted earnings per share (usd per share)	$ 0.33	$ 0.57	$ 1.43	$ 1.47
Pro Forma [Member]
Noninterest expense:
Income tax expense		1,447	5,798	3,635
Net income		3,046	11,895	7,653
Pro forma net income (unaudited)		$ 3,046	$ 11,895	$ 7,653
Basic earnings per share (usd per share)		$ 0.39	$ 1.10	$ 1.00
Diluted earnings per share (usd per share)		$ 0.39	$ 1.10	$ 1.00

XML

Statement of Cash Flows

9 Months Ended

Sep. 30, 2013

Supplemental Cash Flow Information [Abstract]

Statement of Cash Flows

Statement of Cash Flows

The Company has chosen to report on a net basis its cash receipts and cash payments for time deposits accepted and repayments of those deposits, and loans made to customers and principal collections on those loans. The Company uses the indirect method to present cash flows from operating activities. Other supplemental cash flow information is presented below:

	Nine months ended September 30,
	2013		2012
Cash transactions:
Interest expense paid	$	9,270	$	9,899
Income taxes paid	$	3,100	$	—
Noncash transactions:
Transfers of loans to other real estate owned	$	2,885	$	340
Loans to facilitate the sale of other real estate owned	$	113	$	20
Writeoff of debt origination costs related to warrants	$	223	$	—
Security purchased, not yet settled	$	1,000	$	—
Restricted stock vested	$	9	$	—

XML

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

At September 30, 2013 and December 31, 2012, the approximate amounts of these financial instruments were as follows:

	September 30,		December 31,
	2013		2012
Commitments to extend credit	$	286,616	$	153,932
Standby letters of credit	2,229		2,704
	$	288,845	$	156,636

XML

Fair Value Measurements-Carrying Amount and Estimated Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financial assets:
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	$ 130,987	$ 113,355
Financial liabilities:
Financial instruments with off-balance sheet risk	288,845	156,636
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	120,281	102,290
Certificates of deposit held in other banks	0	0
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	0	0
Loans held for sale	0	0
Loans, net	0	0
FHLB of Dallas stock and other restricted stock	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Accrued interest payable	0	0
FHLB advances	0	0
Notes payable		0
Other borrowings	0	0
Junior subordinated debentures	0	0
Contingent consideration		0
Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Certificates of deposit held in other banks	348	7,720
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	130,987	113,355
Loans held for sale	4,254	9,162
Loans, net	1,554,929	1,393,377
FHLB of Dallas stock and other restricted stock	8,324	8,165
Accrued interest receivable	4,595	4,647
Financial liabilities:
Deposits	1,542,753	1,399,373
Accrued interest payable	879	985
FHLB advances	163,768	170,239
Notes payable		15,729
Other borrowings	7,983	20,970
Junior subordinated debentures	18,111	18,114
Contingent consideration		0
Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Certificates of deposit held in other banks	0	0
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	0	0
Loans held for sale	0	0
Loans, net	4,384	6,561
FHLB of Dallas stock and other restricted stock	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Accrued interest payable	0	0
FHLB advances	0	0
Notes payable		0
Other borrowings	0	0
Junior subordinated debentures	0	0
Contingent consideration		290
Estimate of Fair Value, Fair Value Disclosure
Financial assets:
Cash and cash equivalents	120,281	102,290
Certificates of deposit held in other banks	348	7,720
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	130,987	113,355
Loans held for sale	4,254	9,162
Loans, net	1,559,313	1,399,938
FHLB of Dallas stock and other restricted stock	8,324	8,165
Accrued interest receivable	4,595	4,647
Financial liabilities:
Deposits	1,542,753	1,399,373
Accrued interest payable	879	985
FHLB advances	163,768	170,239
Notes payable		15,729
Other borrowings	7,983	20,970
Junior subordinated debentures	18,111	18,114
Contingent consideration		290
Carrying (Reported) Amount, Fair Value Disclosure
Financial assets:
Cash and cash equivalents	120,281	102,290
Certificates of deposit held in other banks	348	7,720
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)		113,355
Loans held for sale	4,254	9,162
Loans, net	1,542,453	1,358,036
FHLB of Dallas stock and other restricted stock	8,324	8,165
Accrued interest receivable	4,595	4,647
Financial liabilities:
Deposits	1,540,748	1,390,740
Accrued interest payable	879	985
FHLB advances	161,507	164,601
Notes payable		15,729
Other borrowings	7,730	20,788
Junior subordinated debentures	18,147	18,147
Contingent consideration		290
Commitments to Extend Credit
Financial liabilities:
Financial instruments with off-balance sheet risk	286,616	153,932
Commitments to Extend Credit | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Commitments to Extend Credit | Significant Other Observable Inputs (Level 2)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Commitments to Extend Credit | Significant Unobservable Inputs (Level 3)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Commitments to Extend Credit | Estimate of Fair Value, Fair Value Disclosure
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Commitments to Extend Credit | Carrying (Reported) Amount, Fair Value Disclosure
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Standby Letters of Credit
Financial liabilities:
Financial instruments with off-balance sheet risk	2,229	2,704
Standby Letters of Credit | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Standby Letters of Credit | Significant Other Observable Inputs (Level 2)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Standby Letters of Credit | Significant Unobservable Inputs (Level 3)
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Standby Letters of Credit | Estimate of Fair Value, Fair Value Disclosure
Financial liabilities:
Financial instruments with off-balance sheet risk	0	0
Standby Letters of Credit | Carrying (Reported) Amount, Fair Value Disclosure
Financial liabilities:
Financial instruments with off-balance sheet risk	$ 0	$ 0

XML

Regulatory Matters

9 Months Ended

Sep. 30, 2013

Regulated Operations [Abstract]

Regulatory Matters

Regulatory Matters

Under banking law, there are legal restrictions limiting the amount of dividends the Bank can declare. Approval of the regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels. For state banks, subject to regulatory capital requirements, payment of dividends is generally allowed to the extent of net profits.

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

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total and Tier I capital (as defined in the regulations) to risk weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). Management believes, as of September 30, 2013 and December 31, 2012, the Company and the Bank meet all capital adequacy requirements to which they are subject.

As of September 30, 2013 and December 31, 2012, the Bank’s capital ratios exceeded those levels necessary to be categorized as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized”, the Bank must maintain minimum total risk based, Tier I risk based and Tier I leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the Bank’s category.

The actual capital amounts and ratios of the Company and Bank as of September 30, 2013 and December 31, 2012, are presented in the following table:

	Actual				Minimum for Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
September 30, 2013
Total capital to risk weighted assets:
Consolidated	$	225,078	15.05	%	$	119,627	8.00	%	N/A		N/A
Bank	185,911		12.53		118,684		8.00		$	148,355	10.00	%
Tier I capital to risk weighted assets:
Consolidated	205,203		13.72		59,814		4.00		N/A		N/A
Bank	172,766		11.65		59,342		4.00		89,013		6.00	%
Tier I capital to average assets:
Consolidated	205,203		10.74		76,456		4.00		N/A		N/A
Bank	172,766		9.10		75,963		4.00		94,954		5.00	%
December 31, 2012
Total capital to risk weighted assets:
Consolidated	$	137,553	10.51	%	$	104,693	8.00	%	N/A		N/A
Bank	143,646		11.07		103,790		8.00		$	129,738	10.00	%
Tier I capital to risk weighted assets:
Consolidated	107,539		8.22		52,346		4.00		N/A		N/A
Bank	132,168		10.19		51,895		4.00		77,843		6.00	%
Tier I capital to average assets:
Consolidated	107,539		6.45		66,722		4.00		N/A		N/A
Bank	132,168		7.99		66,162		4.00		82,702		5.00	%

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Notes Payable and Other Borrowings (Details) (USD $) In Thousands, unless otherwise specified			1 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Feb. 28, 2013 Notes Payable to Banks [Member] debt_instrument	Feb. 28, 2013 Senior Notes [Member] debt_instrument	Apr. 30, 2013 Commercial Bank [Member] Subordinated Debt [Member]	Sep. 30, 2013 Individual Counterparty [Member] Subordinated Debt [Member]	Aug. 31, 2013 Individual Counterparty [Member] Subordinated Debt [Member]	Apr. 30, 2013 Individual Counterparty [Member] Subordinated Debt [Member]
Debt Instrument [Line Items]
Notes payable	$ 0	$ 15,729
Debt instruments repaid (debt instruments)			2	2
Other borrowings	7,730	20,788
Debt repayments during period					$ 2,812	$ 4,680	$ 4,155	$ 1,223

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Stock Awards and Stock Warrants - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2008
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock vesting period				5 years
Compensation expense		$ 455	$ 156	$ 1,049	$ 446
Estimated future compensation expense		4,147		4,147
Fair value of common stock awards vested				641	609
Issuance of warrant (shares)				150,544
Purchase price of common stock, per share (usd per share)				$ 17.19
Warrant fair value						475
Writeoff of debt origination costs related to warrants	$ 223			$ 223	$ 0
Period for recognition				2 years 7 months 21 days
2013 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock vesting period				5 years
Shares reserved for future issuance (shares)	800,000

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Loans, Net and Allowances for Loan Losses-Composition of Loans (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	$ 1,555,598		$ 1,369,514
Allowance for loan losses	(13,145)	(12,762)	(11,478)	(10,901)	(9,894)	(9,060)
Loans, net	1,542,453		1,358,036
Commercial
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	209,453		169,882
Allowance for loan losses	(1,889)	(1,970)	(2,377)	(1,303)	(1,201)	(1,259)
Real estate, Commercial
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	768,427		648,494
Real estate, Commercial construction, land and land development
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	95,661		97,329
Real estate, Residential
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	331,312		306,187
Allowance for loan losses	(2,481)	(2,567)	(2,965)	(1,863)	(1,884)	(1,964)
Single-Family Interim Construction
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	77,493		67,920
Allowance for loan losses	(586)	(540)	(523)	(753)	(677)	(317)
Agricultural
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	31,445		40,127
Allowance for loan losses	(193)	(210)	(159)	(208)	(231)	(209)
Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	41,747		39,502
Allowance for loan losses	(329)	(350)	(278)	(393)	(344)	(235)
Other
Accounts Notes And Loans Receivable [Line Items]
Loans, gross	60		73
Allowance for loan losses	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

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Stock Awards and Stock Warrants (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Nonvested Shares Activity

The following table summarizes the activity in nonvested shares for the nine months endedSeptember 30, 2013 and 2012:

	Number of Shares		Weighted Average Grant Date Price
Nonvested shares, December 31, 2012	208,608		$	17.07
Granted during the period	119,540		28.68
Vested during the period	(22,716	)	14.30
Nonvested shares, September 30, 2013	305,432		$	22.16
Nonvested shares, December 31, 2011	180,025		$	15.64
Granted during the period	36,960		20.31
Vested during the period	(29,977	)	14.76
Nonvested shares, September 30, 2012	187,008		$	16.70

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Assets and Liabilities at Fair Value on Recurring Basis

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of September 30, 2013 and December 31, 2012 by level within the ASC Topic 820 fair value measurement hierarchy:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,521	$	—	$	3,521	$	—
Government agency securities	88,407		—		88,407		—
Obligations of state and municipal subdivisions	36,540		—		36,540		—
Corporate bonds	2,044		—		2,044		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	475		—		475		—
Liabilities:
Contingent consideration	—		—		—		—
December 31, 2012
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,547	$	—	$	3,547	$	—
Government agency securities	70,211		—		70,211		—
Obligations of state and municipal subdivisions	36,814		—		36,814		—
Corporate bonds	2,103		—		2,103		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	680		—		680		—
Liabilities:
Contingent consideration	290		—		—		290

Contingent Consideration Related to Acquisition of Town Center Bank

The following table presents the activity in the contingent consideration for the nine months ended September 30, 2013 and 2012:

	Nine months ended September 30,
	2013			2012
Balance, beginning of period	$	290		$	821
Settlements	(287		)	(393		)
Change in estimated payments to be made	(3		)	(2		)
Balance, end of period	$	—		$	426

Assets and Liabilities at Fair Value on Nonrecurring Basis

The following table presents the assets carried on the consolidated balance sheet by caption and by level in the fair value hierarchy at September 30, 2013 and December 31, 2012, for which a nonrecurring change in fair value has been recorded:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Period Ended Total Losses
September 30, 2013
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	1,111	$	—	$	—	$	1,111	$	282
Other real estate	2,768		—		—		2,768		475
December 31, 2012
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	5,146	$	—	$	—	$	5,146	$	187
Other real estate	748		—		—		748		94

Quantitative Information about Level Three Measurements

For Level 3 financial and nonfinancial assets and liabilities measured at fair value at September 30, 2013, the significant unobservable inputs used in the fair value measurements are as follows:

Assets/Liabilities	Fair Value		Valuation Technique	Unobservable Input(s)	Weighted Average
Impaired loans	$	1,111	Collateral method	Adjustments for selling costs	8%
Other real estate	2,768		Collateral method	Adjustments for selling costs	8%

Carrying Amount and Estimated Fair Value of Financial Instruments

The carrying amount, estimated fair value and the level of the fair value hierarchy of the Company’s financial instruments were as follows at September 30, 2013 and December 31, 2012:

					Fair Value Measurements at Reporting Date Using
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Financial assets:
Cash and cash equivalents	$	120,281	$	120,281	$	120,281	$	—	$	—
Certificates of deposit held in other banks	348		348		—		348		—
Securities available for sale	130,987		130,987		—		130,987		—
Loans held for sale	4,254		4,254		—		4,254		—
Loans, net	1,542,453		1,559,313		—		1,554,929		4,384
FHLB of Dallas stock and other restricted stock	8,324		8,324		—		8,324		—
Accrued interest receivable	4,595		4,595		—		4,595		—
Financial liabilities:
Deposits	1,540,748		1,542,753		—		1,542,753		—
Accrued interest payable	879		879		—		879		—
FHLB advances	161,507		163,768		—		163,768		—
Other borrowings	7,730		7,983		—		7,983		—
Junior subordinated debentures	18,147		18,111		—		18,111		—
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—
December 31, 2012
Financial assets:
Cash and cash equivalents	$	102,290	$	102,290	$	102,290	$	—	$	—
Certificates of deposit held in other banks	7,720		7,720		—		7,720		—
Securities available for sale	113,355		113,355		—		113,355		—
Loans held for sale	9,162		9,162		—		9,162		—
Loans, net	1,358,036		1,399,938		—		1,393,377		6,561
FHLB of Dallas stock and other restricted stock	8,165		8,165		—		8,165		—
Accrued interest receivable	4,647		4,647		—		4,647		—
Financial liabilities:
Deposits	1,390,740		1,399,373		—		1,399,373		—
Accrued interest payable	985		985		—		985		—
FHLB advances	164,601		170,239		—		170,239		—
Notes payable	15,729		15,729		—		15,729		—
Other borrowings	20,788		20,970		—		20,970		—
Junior subordinated debentures	18,147		18,114		—		18,114		—
Contingent consideration	290		290		—		—		290
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—

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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Financial instruments with off-balance sheet risk	$ 288,845	$ 156,636
Commitments to Extend Credit
Loss Contingencies [Line Items]
Financial instruments with off-balance sheet risk	286,616	153,932
Standby Letters of Credit
Loss Contingencies [Line Items]
Financial instruments with off-balance sheet risk	$ 2,229	$ 2,704

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Securities Available for Sale-Proceeds from Sale, Gross Gains and Losses of Securities Available for Sale (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Available-for-sale Securities [Abstract]
Proceeds from sale	$ 0	$ 0	$ 0	$ 2,078
Gross gains	0	0	0	0
Gross losses	$ 0	$ 0	$ 0	$ 3

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Loans, Net and Allowance for Loan Losses-Summary of Non Performing Loans by Loan Class (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Non Performing Loans [Line Items]
Nonaccrual loans	$ 2,875	$ 6,599
Loans past due 90 days and still accruing	0	2
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	3,788	4,433
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	6,663	11,034
Commercial
Non Performing Loans [Line Items]
Nonaccrual loans	189	218
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	114	481
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	303	699
Commercial Real Estate, Land and Land Development
Non Performing Loans [Line Items]
Nonaccrual loans	827	4,857
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	3,102	1,778
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	3,929	6,635
Real estate, Residential
Non Performing Loans [Line Items]
Nonaccrual loans	1,816	894
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	571	2,165
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	2,387	3,059
Agricultural
Non Performing Loans [Line Items]
Nonaccrual loans	0	0
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	0	0
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	0	0
Single-Family Interim Construction
Non Performing Loans [Line Items]
Nonaccrual loans	0	560
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	0	0
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	0	560
Consumer
Non Performing Loans [Line Items]
Nonaccrual loans	43	70
Loans past due 90 days and still accruing	0	2
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	1	9
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	44	81
Other
Non Performing Loans [Line Items]
Nonaccrual loans	0	0
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	0	0
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	$ 0	$ 0

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Income Taxes (Details) (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 Tax [Line Items]
Income tax expense for the period	$ 1,927		$ 3,932
Initial recording of deferred tax asset	0		(1,760)
Income tax expense for the period	1,927	0	2,172	0
Effective tax rates (percent)	32.70%		12.30%
Deferred tax net asset			1,760
Federal income tax at statutory rate (percent)			35.00%
Pro Forma [Member]
Income Tax [Line Items]
Income tax expense for the period		$ 1,447	$ 5,798	$ 3,635
Effective tax rates (percent)		32.20%	32.80%	32.20%

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Statement of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	9 Months Ended
	Apr. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Supplemental Cash Flow Elements [Abstract]
Interest expense paid		$ 9,270	$ 9,899
Income Taxes Paid		3,100	0
Noncash transactions:
Transfers of loans to other real estate owned		2,885	340
Loans to facilitate the sale of other real estate owned		113	20
Writeoff of debt origination costs related to warrants	223	223	0
Security purchased, not yet settled		1,000	0
Restricted stock vested		$ 9	$ 0

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Loans, Net and Allowance for Loan Losses-Aging of Past Due Loans by Loan Class (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	$ 3,859	$ 5,374
Loans 90 or More Past Due	2,364	1,013
Total Past Due Loans	6,223	6,387
Current Loans	1,549,375	1,363,127
Ending balance	1,555,598	1,369,514
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,202	845
Loans 90 or More Past Due	184	0
Total Past Due Loans	1,386	845
Current Loans	208,067	169,037
Ending balance	209,453	169,882
Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	2,087	3,091
Loans 90 or More Past Due	631	62
Total Past Due Loans	2,718	3,153
Current Loans	861,370	742,670
Ending balance	864,088	745,823
Residential Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	348	1,305
Loans 90 or More Past Due	1,523	360
Total Past Due Loans	1,871	1,665
Current Loans	329,441	304,522
Ending balance	331,312	306,187
Single-Family Interim Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	173	0
Loans 90 or More Past Due	0	559
Total Past Due Loans	173	559
Current Loans	77,320	67,361
Ending balance	77,493	67,920
Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	8	23
Loans 90 or More Past Due	0	0
Total Past Due Loans	8	23
Current Loans	31,437	40,104
Ending balance	31,445	40,127
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	41	110
Loans 90 or More Past Due	26	32
Total Past Due Loans	67	142
Current Loans	41,680	39,360
Ending balance	41,747	39,502
Other Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	0	0
Loans 90 or More Past Due		0
Total Past Due Loans	0	0
Current Loans	60	73
Ending balance	$ 60	$ 73

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense

Income tax expense was as follows:

	For the Three Months Ended September 30, 2013			For the Nine Months Ended September 30, 2013
Income tax expense for the period	$	1,927		$	3,932
Initial recording of deferred tax asset	—			(1,760		)
Income tax expense, as reported	$	1,927		$	2,172
Effective tax rate	32.7		%	12.3		%

Schedule of Deferred Tax Assets and Liabilities

Components of deferred tax assets and liabilities are as follows:

	September 30, 2013
Deferred tax assets:
Allowance for loan losses	$	4,601
NOL carryforwards from acquisitions	993
Net unrealized loss on available for sale securities	620
Acquired loan fair market value adjustments	748
Restricted stock	918
Bonus accrual	306
Other real estate owned	397
Unearned rent income	59
Nonaccrual loans	67
Other	48
	8,757
Deferred tax liabilities:
Premises and equipment	(4,703		)
Core deposit intangibles	(953		)
Securities	(98		)
FHLB stock	(64		)
	(5,818		)
Net deferred tax asset	$	2,939

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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income
Beginning balance at Dec. 31, 2011	$ 85,997	$ 69	$ 59,196	$ 24,594	$ (24)	$ 2,162
Beginning balance (in shares) at Dec. 31, 2011		6,852,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,288			11,288
Other comprehensive income (loss), net of tax	688					688
Stock issued (in shares)		1,238,156
Stock issued	25,150	12	25,138
Restricted stock vested	0
Stock awards amortized	446		446
Treasury stock purchased	(208)				(208)
Dividends ($0.71 per share in 2013 and $0.74 per share in 2012)	(5,629)			(5,629)
Ending balance at Sep. 30, 2012	117,732	81	84,780	30,253	(232)	2,850
Ending balance (in shares) at Sep. 30, 2012		8,090,465
Beginning balance at Dec. 31, 2012	124,510	83	88,791	33,290	(232)	2,578
Beginning balance (in shares) at Dec. 31, 2012		8,278,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,521			15,521
Other comprehensive income (loss), net of tax	(3,136)					(3,136)
Treasury stock retired (shares)		(8,647)
Treasury stock retired			(232)		232
Stock issued (in shares)		3,680,000
Stock issued	86,637	37	86,600
Reclassification adjustment for change in taxable status			33,624	(33,624)
Restricted stock granted (shares)		127,220
Restricted stock granted		1	(1)
Restricted stock vested	9		9
Stock awards amortized	1,049		1,049
Dividends ($0.71 per share in 2013 and $0.74 per share in 2012)	(6,079)			(6,079)
Ending balance at Sep. 30, 2013	$ 218,511	$ 121	$ 209,840	$ 9,108	$ 0	$ (558)
Ending balance (in shares) at Sep. 30, 2013		12,076,927

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 3,959	$ 15,521	$ 11,288
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense		3,171	2,571
Amortization of core deposit intangibles	175	527	480
Amortization (accretion) of premium (discount) on securities, net		51	(12)
Stock grants amortized		1,049	446
FHLB stock dividends		(20)	(13)
Loss on sale of securities available for sale	0	0	3
Net (gain) loss on sale of premises and equipment	(5)	(4)	346
Gain on sale of branch	0	0	(51)
(Gain) loss recognized on other real estate transactions	0	(173)	75
Impairment of other real estate	12	475	56
Deferred tax benefit		(1,727)	0
Provision for loan losses	830	2,939	2,255
Increase in cash surrender value of life insurance	(80)	(240)	(245)
Loans originated for sale		(132,897)	(127,931)
Proceeds from sale of loans		137,805	126,230
Net change in other assets		317	(188)
Net change in other liabilities		1,575	732
Net cash provided by operating activities		28,369	16,042
Cash flows from investing activities:
Proceeds from maturities and pay downs of securities available for sale		142,887	43,308
Proceeds from sale of securities available for sale		0	2,078
Purchases of securities available for sale		(163,918)	(49,125)
Proceeds from maturities of certificates held in other banks		7,372	6,667
Net purchases of FHLB stock		(139)	(402)
Net loans originated		(190,128)	(124,072)
Additions to premises and equipment		(6,165)	(10,643)
Proceeds from sale of premises and equipment		66	3,244
Proceeds from sale of other real estate owned		1,047	2,053
Capitalized additions to other real estate		(85)	(476)
Cash received from acquired bank		0	19,993
Cash paid in connection with acquisition		0	(37,000)
Net cash transferred in branch sale		0	(18,550)
Net cash used in investing activities		(209,063)	(162,925)
Cash flows from financing activities:
Net increase in demand deposits, NOW and savings accounts		109,341	101,624
Net increase (decrease) in time deposits		40,667	(22,306)
Net change in FHLB advances		(3,094)	25,858
Repayments of notes payable and other borrowings		(28,787)	(3,143)
Proceeds from other borrowings		0	11,680
Proceeds from sale of common stock		86,637	25,150
Payments for Repurchase of Common Stock	0		(208)
Dividends paid		(6,079)	(5,629)
Net cash provided by financing activities		198,685	133,026
Net change in cash and cash equivalents		17,991	(13,857)
Cash and cash equivalents at beginning of period		102,290	56,654
Cash and cash equivalents at end of period	$ 120,281	$ 120,281	$ 42,797

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Securities Available for Sale

9 Months Ended

Sep. 30, 2013

Available-for-sale Securities [Abstract]

Securities Available for Sale

Securities Available for Sale

Securities available for sale have been classified in the consolidated balance sheets according to management’s intent. The amortized cost of securities and their approximate fair values at September 30, 2013 and December 31, 2012, are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Securities Available for Sale
September 30, 2013:
U.S. treasuries	$	3,497	$	24	$	—		$	3,521
Government agency securities	88,854		197		(644		)	88,407
Obligations of state and municipal subdivisions	37,873		477		(1,810		)	36,540
Corporate bonds	2,085		—		(41		)	2,044
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	448		27		—			475
	$	132,757	$	725	$	(2,495	)	$	130,987
December 31, 2012:
U.S. treasuries	$	3,493	$	54	$	—		$	3,547
Government agency securities	69,636		575		—			70,211
Obligations of state and municipal subdivisions	34,908		2,123		(217		)	36,814
Corporate bonds	2,105		23		(25		)	2,103
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	635		45		—			680
	$	110,777	$	2,820	$	(242	)	$	113,355

Securities with a carrying amount of approximately $96,374 and $84,117 at September 30, 2013 and December 31, 2012, respectively, were pledged to secure public fund deposits.

Proceeds from sale of securities available for sale and gross gains and losses for the three and nine months ended September 30, 2013 and 2012 were as follows:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Proceeds from sale	$	—	$	—	$	—	$	2,078
Gross gains	$	—	$	—	$	—	$	—
Gross losses	$	—	$	—	$	—	$	3

The amortized cost and estimated fair value of securities available for sale at September 30, 2013, by contractual maturity, are shown below. Maturities of pass-through certificates will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	September 30, 2013
	Securities Available for Sale
	Amortized Cost		Fair Value
Due in one year or less	$	6,093	$	6,133
Due from one year to five years	58,361		57,966
Due from five to ten years	35,108		35,081
Thereafter	32,747		31,332
	132,309		130,512
Residential mortgage-backed securities guaranteed by FNMA,  GNMA, FHLMC and SBA	448		475
	$	132,757	$	130,987

The number of securities, unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of September 30, 2013 and December 31, 2012, are summarized as follows:   

		Value Impaired
		Less Than 12 Months					Greater Than 12 Months				Total
Description of Securities	Number of Securities	Estimated Fair Value		Unrealized Losses			Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Securities Available for Sale
September 30, 2013
Government agency securities	29	$	45,643	$	(644	)	$	—	$	—	$	45,643	$	(644	)
Obligations of state and municipal subdivisions	27	15,460		(1,810		)	—		—		15,460		(1,810		)
Corporate bonds	2	2,044		(41		)	—		—		2,044		(41		)
		$	63,147	$	(2,495	)	$	—	$	—	$	63,147	$	(2,495	)
December 31, 2012
Obligations of state and municipal subdivisions	9	$	6,551	$	(217	)	$	—	$	—	$	6,551	$	(217	)
Corporate bonds	1	990		(25		)	—		—		990		(25		)
		$	7,541	$	(242	)	$	—	$	—	$	7,541	$	(242	)

Unrealized losses are generally due to changes in interest rates. The Company has the intent to hold these securities until maturity or a forecasted recovery and it is more likely than not that the Company will not have to sell the securities before the recovery of their cost basis. As such, the losses are deemed to be temporary.

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Nature of Operations: Independent Bank Group, Inc. (IBG) through its subsidiary, Independent Bank, a Texas state banking corporation (Bank) (collectively known as the Company), provides a full range of banking services to individual and corporate customers in the North and Central Texas areas through its various branch locations in those areas. The Company is engaged in traditional community banking activities, which include commercial and retail lending, deposit gathering, investment and liquidity management activities. The Company’s primary deposit products are demand deposits, money market accounts and certificates of deposit, and its primary lending products are commercial business and real estate, real estate mortgage and consumer loans.

Basis of Presentation: The accompanying consolidated financial statements include the accounts of IBG, its wholly-owned subsidiaries, the Bank and IBG Adriatica Holdings, Inc. (Adriatica) and the Bank’s wholly-owned subsidiaries, IBG Real Estate Holdings, Inc., and IBG Aircraft Acquisition, Inc. Adriatica was formed in 2011 to acquire a mixed use residential and retail real estate development in McKinney, Texas. All material intercompany transactions and balances have been eliminated in consolidation. In addition, the Company wholly-owns IB Trust I (Trust I), IB Trust II (Trust II), IB Trust III (Trust III), IB Centex Trust I (Centex Trust I) and Community Group Statutory Trust I (CGI Trust I). The Trusts were formed to issue trust preferred securities and do not meet the criteria for consolidation.

The consolidated interim financial statements are unaudited, but include all adjustments, which, in the opinion of management are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in the Company’s registration statement on Form S-1. The consolidated statement of condition at December 31, 2012 has been derived from the audited financial statements as of that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements.

Segment Reporting: The Company has one reportable segment. The Company’s chief operating decision-maker uses consolidated results to make operating and strategic decisions.

Initial Public Offering (IPO): IBG qualifies as an “emerging growth company” as defined by the Jumpstart Our Business Startups Act (JOBS Act). In October 2012, the Board of Directors of the Company approved a resolution for IBG to sell shares of common stock to the public in an initial public offering. On December 28, 2012, the Company submitted a confidential draft Registration Statement on Form S-1 with the SEC with respect to the shares to be registered and sold. On February 27, 2013, the Company filed a Registration Statement on Form S-1 with the SEC. That Registration Statement was declared effective by the SEC on April 2, 2013. The Company sold and issued 3,680,000 shares of common stock at $26 per share in reliance on that Registration Statement. Total proceeds received by the Company, net of offering costs were approximately $87 million.

In connection with the initial public offering, on February 22, 2013, the Company amended its certificate of incorporation to affect a 3.2 for one stock split of its common stock and change the par value of common stock from $1 to $.01. All previously reported share amounts have been retrospectively restated to give effect to the stock split and the common stock account has been reallocated to additional paid in capital to reflect the new par value. The Company also terminated its S-Corporation status and became a taxable corporate entity (C Corporation) on April 1, 2013. The consolidated statement of stockholders' equity presents a constructive distribution to the owners followed by a contribution to the capital of the corporate entity. The transfer did not affect total stockholders’ equity.

Income Taxes: Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities (excluding deferred tax assets and liabilities related to business combinations or components of other comprehensive income). Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the level of historical income and estimates of future taxable income. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized.

The Company evaluates uncertain tax positions at the end of each reporting period. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.

The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement.  Any interest and/or penalties related to income taxes are reported as a component of income tax expense.

The Company files a consolidated income tax return in U.S. federal jurisdiction and Texas.

Pro forma statements: Because the Company was not a taxable entity prior to April 1, 2013, pro forma amounts for income tax expense and basic and diluted earnings per share have been presented assuming the Company’s effective tax rate of 32.8% for the nine months ended September 30, 2013 and 32.2% for the three and nine months ended September 30, 2012, as if it had been a C Corporation during those periods. The difference in the statutory rate of 35% and the Company’s effective rate is primarily due to nontaxable income earned on municipal securities and bank owned life insurance. In addition, the pro forma results for the nine months ended September 30, 2013 excludes the initial deferred tax credit as discussed in Note 7.

Earnings per share: Basic earnings per common share are net income divided by the weighted average number of common shares outstanding during the period. The unvested share-based payment awards that contain rights to non forfeitable dividends are considered participating securities for this calculation. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock warrants. The dilutive effect of participating non vested common stock was not included as it was anti-dilutive. Proceeds from the assumed exercise of dilutive stock warrants are assumed to be used to repurchase common stock at the average market price.

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Basic earnings per share:
Net income	$	3,959	$	4,493	$	15,521	$	11,288
Less:
Undistributed earnings allocated to participating securities	68		41		184		112
Dividends paid on participating securities	15		44		119		111
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Basic earnings per share	$	0.33	$	0.57	$	1.44	$	1.47
Diluted earnings per share:
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Total weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Add dilutive stock warrants	74,229		23,126		58,874		23,126
Total weighted-average diluted shares outstanding	11,897,884		7,741,402		10,647,428		7,525,884
Diluted earnings per share	$	0.33	$	0.57	$	1.43	$	1.47
Pro forma earnings per share:
Pro forma net income	n/a		$	3,046	$	11,895	$	7,653
Less undistributed earnings allocated to participating securities	n/a		14		113		40
Less dividends paid on participating securities	n/a		44		119		111
Pro forma net income available to common shareholders after tax	n/a		$	2,988	$	11,663	$	7,502
Pro forma basic earnings per share	n/a		$	0.39	$	1.10	$	1.00
Pro forma diluted earnings per share	n/a		$	0.39	$	1.10	$	1.00
Anti-dilutive participating securities	151,674		106,941		139,416		102,086

Subsequent events: The Company has evaluated subsequent events through the date of filing these financial statements with the SEC and noted no subsequent events requiring financial statement recognition or disclosure.

Reclassifications: Certain prior period accounts have been reclassified to conform with current year presentation.

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Loans, Net and Allowance for Loan Losses- Impaired Loans by Loan Class (Details) (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
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	$ 5,092		$ 5,092		$ 7,550
Impaired loans with no allowance for loan losses	7,156		7,156		7,256
Total impaired loans	12,248		12,248		14,806
Unpaid principal balance of impaired loans	12,665		12,665		15,478
Allowance for loan losses on impaired loans	708		708		989
Average recorded investment in impaired loans	12,161	18,253	13,038	18,497
Interest income recognized on impaired loans	151	407	497	751
Commercial
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	478		478		644
Impaired loans with no allowance for loan losses	149		149		80
Total impaired loans	627		627		724
Unpaid principal balance of impaired loans	627		627		741
Allowance for loan losses on impaired loans	124		124		165
Average recorded investment in impaired loans	599	736	687	784
Interest income recognized on impaired loans	4	15	26	39
Commercial Real Estate, Land and Land Development
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	3,245		3,245		5,532
Impaired loans with no allowance for loan losses	4,996		4,996		5,069
Total impaired loans	8,241		8,241		10,601
Unpaid principal balance of impaired loans	8,630		8,630		11,140
Allowance for loan losses on impaired loans	489		489		644
Average recorded investment in impaired loans	8,095	13,396	8,833	13,331
Interest income recognized on impaired loans	112	277	347	520
Real estate, Residential
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	1,324		1,324		1,301
Impaired loans with no allowance for loan losses	1,985		1,985		2,075
Total impaired loans	3,309		3,309		3,376
Unpaid principal balance of impaired loans	3,337		3,337		3,475
Allowance for loan losses on impaired loans	72		72		164
Average recorded investment in impaired loans	3,394	3,939	3,435	4,205
Interest income recognized on impaired loans	34	108	120	181
Single-Family Interim Construction
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	0		0		0
Impaired loans with no allowance for loan losses	0		0		0
Total impaired loans	0		0		0
Unpaid principal balance of impaired loans	0		0		0
Allowance for loan losses on impaired loans	0		0		0
Average recorded investment in impaired loans	0	41	0	43
Interest income recognized on impaired loans	0	4	0	4
Agricultural
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	0		0		0
Impaired loans with no allowance for loan losses	0		0		0
Total impaired loans	0		0		0
Unpaid principal balance of impaired loans	0		0		0
Allowance for loan losses on impaired loans	0		0		0
Average recorded investment in impaired loans	0	0	0	0
Interest income recognized on impaired loans	0	0	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	45		45		73
Impaired loans with no allowance for loan losses	26		26		32
Total impaired loans	71		71		105
Unpaid principal balance of impaired loans	71		71		122
Allowance for loan losses on impaired loans	23		23		16
Average recorded investment in impaired loans	73	141	83	134
Interest income recognized on impaired loans	1	3	4	7
Other
Financing Receivable, Impaired [Line Items]
Impaired loans with an allowance for loan losses	0		0		0
Impaired loans with no allowance for loan losses	0		0		0
Total impaired loans	0		0		0
Unpaid principal balance of impaired loans	0		0		0
Allowance for loan losses on impaired loans	0		0		0
Average recorded investment in impaired loans	0	0	0	0
Interest income recognized on impaired loans	$ 0	$ 0	$ 0	$ 0

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Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2013

Regulated Operations [Abstract]

Actual Capital Amounts and Ratios

The actual capital amounts and ratios of the Company and Bank as of September 30, 2013 and December 31, 2012, are presented in the following table:

	Actual				Minimum for Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
September 30, 2013
Total capital to risk weighted assets:
Consolidated	$	225,078	15.05	%	$	119,627	8.00	%	N/A		N/A
Bank	185,911		12.53		118,684		8.00		$	148,355	10.00	%
Tier I capital to risk weighted assets:
Consolidated	205,203		13.72		59,814		4.00		N/A		N/A
Bank	172,766		11.65		59,342		4.00		89,013		6.00	%
Tier I capital to average assets:
Consolidated	205,203		10.74		76,456		4.00		N/A		N/A
Bank	172,766		9.10		75,963		4.00		94,954		5.00	%
December 31, 2012
Total capital to risk weighted assets:
Consolidated	$	137,553	10.51	%	$	104,693	8.00	%	N/A		N/A
Bank	143,646		11.07		103,790		8.00		$	129,738	10.00	%
Tier I capital to risk weighted assets:
Consolidated	107,539		8.22		52,346		4.00		N/A		N/A
Bank	132,168		10.19		51,895		4.00		77,843		6.00	%
Tier I capital to average assets:
Consolidated	107,539		6.45		66,722		4.00		N/A		N/A
Bank	132,168		7.99		66,162		4.00		82,702		5.00	%

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Securities Available for Sale - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]
Carrying value of securities pledged	$ 96,374	$ 84,117

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Loans Net and Allowance for Loan Losses - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013 modified_loan	Sep. 30, 2012 modified_loan	Sep. 30, 2013 modified_loan	Sep. 30, 2012 modified_loan	Dec. 31, 2012
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable description	There were no concentrations of loans related to a single industry in excess of 10% of total loans.				There were no concentrations of loans related to a single industry in excess of 10% of total loans.
Recorded investment in troubled debt restructuring including nonaccraul	$ 5,258		$ 5,258		$ 7,544
Troubled debt restructuring (modified loan)	0	1	0	1
Troubled debt restructuring write-down		$ 26		$ 26
Agricultural
Accounts Notes And Loans Receivable [Line Items]
Loan, amortization period	20 years
Agricultural | Maximum
Accounts Notes And Loans Receivable [Line Items]
Loan to value ratio (percent)	80.00%		80.00%
Consumer | Maximum
Accounts Notes And Loans Receivable [Line Items]
Percentage of total loan portfolio (percent)	3.00%		3.00%

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Fair Value Measurements-Quantitative Information about Three Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 Impaired loans	Sep. 30, 2013 Other real estate	Sep. 30, 2013 Weighted Average [Member] Impaired loans	Sep. 30, 2013 Weighted Average [Member] Other real estate
Fair Value Of Assets And Liabilities Quantitative Disclosure [Line Items]
Assets, Fair Value	$ 1,111	$ 2,768
Valuation Technique	Collateral method	Collateral method
Unobservable Input(s)	Adjustments for selling costs	Adjustments for selling costs
Weighted average volatility (percent)			8.00%	8.00%

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Income Taxes-Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Deferred tax assets:
Allowance for loan losses	$ 4,601
NOL carryforwards from acquisitions	993
Net unrealized loss on available for sale securities	620
Acquired loan fair market value adjustments	748
Restricted stock	918
Bonus accrual	306
Other real estate owned	397
Unearned rent income	59
Nonaccrual loans	67
Other	48
Deferred tax assets, gross	8,757
Deferred tax liabilities:
Premises and equipment	(4,703)
Core deposit intangibles	(953)
Securities	(98)
FHLB stock	(64)
Deferred tax liabilities, gross	(5,818)
Deferred tax assets, net	$ 2,939

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Loans, Net and Allowance for Loan Losses-Outstanding Balance and Related Carrying Amount of Purchased Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Oct. 01, 2012
Receivables [Abstract]
Outstanding balance	$ 3,632	$ 9,178	$ 10,839
Nonaccretable difference	(765)	(2,232)	(2,590)
Accretable yield	0	(1)	(27)
Carrying amount	$ 2,867	$ 6,945	$ 8,222

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Amortized cost of securities available for sale	$ 132,757	$ 110,777
Allowance for loan losses	$ 13,145	$ 11,478
Common stock, shares outstanding (shares)	12,076,927	8,278,354
Treasury stock, at cost (shares)	0	8,647

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Notes Payable and Other Borrowings

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Notes Payable and Other Borrowings

Notes Payable and Other Borrowings

Notes payable totaled $0 and $15,729 at September 30, 2013 and December 31, 2012, respectively. During April 2013, the Company repaid all of its outstanding notes payable, including two notes payable from Adriatica to an unaffiliated commercial bank and two senior notes payable to another unaffiliated commercial bank. Other borrowings, including those borrowings due to related parties totaled $7,730 and $20,788 at September 30, 2013 and December 31, 2012, respectively. In April 2013, $2,812 subordinated debt issuance from a commercial bank and $1,223 subordinated debt issued to individuals were repaid. In addition, the Company repaid $4,155 and $4,680 of subordinated debt issued to individuals in August and September, 2013, respectively.

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 3,959	$ 4,493	$ 15,521	$ 11,288
Other comprehensive income (loss) before tax:
Net change in unrealized gains on available for sale securities	1,002	664	(4,348)	685
Reclassification adjustment for loss on sale of securities available for sale	0	0	0	3
Other comprehensive income (loss) before tax:	1,002	664	(4,348)	688
Income tax expense (benefit)	351	0	(1,212)	0
Other comprehensive income (loss), net of tax	651	664	(3,136)	688
Comprehensive income	$ 4,610	$ 5,157	$ 12,385	$ 11,976

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Stock Awards and Stock Warrants Stock Awards and Stock Warrants (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Number of Shares
Nonvested shares, beginning balance (shares)	208,608	180,025
Granted during the period (shares)	119,540	36,960
Vested during the period (shares)	(22,716)	(29,977)
Nonvested shares, ending balance (shares)	305,432	187,008
Weighted Average Grant Date Price
Nonvested shares, beginning balance (usd per share)	$ 17.07	$ 15.64
Granted during the period (usd per share)	$ 28.68	$ 20.31
Vested during the period (usd per share)	$ 14.30	$ 14.76
Nonvested shares, ending balance (usd per share)	$ 22.16	$ 16.70

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 29,281	$ 30,920
Federal Reserve Excess Balance Account (EBA)	91,000	71,370
Cash and cash equivalents	120,281	102,290
Certificates of deposit held in other banks	348	7,720
Securities available for sale (amortized cost of $132,757 and $110,777, respectively)	130,987	113,355
Loans held for sale	4,254	9,162
Loans, net of allowance for loan losses of $13,145 and $11,478, respectively	1,542,453	1,358,036
Premises and equipment, net	73,513	70,581
Other real estate owned	8,376	6,819
Adriatica real estate	9,678	9,727
Goodwill	28,742	28,742
Core deposit intangible, net	2,724	3,251
Federal Home Loan Bank (FHLB) of Dallas stock and other restricted stock	8,324	8,165
Bank-owned life insurance (BOLI)	11,164	10,924
Deferred tax asset	2,939	0
Other assets	10,971	11,288
Total assets	1,954,754	1,740,060
Deposits:
Noninterest-bearing	281,452	259,664
Interest-bearing	1,259,296	1,131,076
Total deposits	1,540,748	1,390,740
FHLB advances	161,507	164,601
Notes payable	0	15,729
Other borrowings	4,460	12,252
Other borrowings, related parties	3,270	8,536
Junior subordinated debentures	18,147	18,147
Other liabilities	8,111	5,545
Total liabilities	1,736,243	1,615,550
Commitments and contingencies
Stockholders’ equity:
Common stock (12,076,927 and 8,278,354 shares outstanding, respectively)	121	83
Additional paid-in capital	209,840	88,791
Retained earnings	9,108	33,290
Treasury stock, at cost (0 and 8,647 shares, respectively)	0	(232)
Accumulated other comprehensive income (loss)	(558)	2,578
Total stockholders’ equity	218,511	124,510
Total liabilities and stockholders’ equity	$ 1,954,754	$ 1,740,060

XML

Fair Value Measurements - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	Aug. 31, 2013
Fair Value Disclosures [Abstract]
Payment of contingent consideration	$ 287

XML

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Apr. 30, 2013	Feb. 28, 2013	Sep. 30, 2013	Sep. 30, 2013 segment	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2012 Pro Forma [Member]	Sep. 30, 2013 Pro Forma [Member]	Sep. 30, 2012 Pro Forma [Member]
Number of reportable segments (segment)				1
Effective tax rates (percent)			32.70%	12.30%			32.20%	32.80%	32.20%
Stock issued (in shares)	3,680,000
Common stock shares issued, price per share (usd per share)	$ 26
Proceeds from sale of common stock	$ 87,000			$ 86,637	$ 25,150
Stock split ratio (percent)		3.2
Common stock, par value (usd per share)		$ 0.01				$ 1
Federal income tax at statutory rate (percent)				35.00%

XML

Loans, Net and Allowance for Loan Losses (Tables)

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Compositions of Loans

Loans, net at September 30, 2013 and December 31, 2012, consisted of the following:

	September 30, 2013			December 31, 2012
Commercial	$	209,453		$	169,882
Real estate:
Commercial	768,427			648,494
Commercial construction, land and land development	95,661			97,329
Residential	331,312			306,187
Single family interim construction	77,493			67,920
Agricultural	31,445			40,127
Consumer	41,747			39,502
Other	60			73
	1,555,598			1,369,514
Allowance for loan losses	(13,145		)	(11,478		)
	$	1,542,453		$	1,358,036

Summary of Activity in Allowance for Loan Losses by Loan Class

Following is a summary of the activity in the allowance for loan losses by loan class for the three and nine months ended September 30, 2013 and 2012:

	Commercial			Commercial Real Estate, Land and Land Development			Residential Real Estate			Single-Family Interim Construction		Agricultural			Consumer			Other		Unallocated			Total
Three months ended September 30, 2013
Balance at the beginning of period	$	1,970		$	7,044		$	2,567		$	540	$	210		$	350		$	—	$	81		$	12,762
Provision for loan losses	264			401			(67		)	46		(17		)	(3		)	—		206			830
Charge-offs	(350		)	(78		)	(21		)	—		—			(26		)	—		—			(475		)
Recoveries	5			13			2			—		—			8			—		—			28
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Nine months ended September 30, 2013
Balance at the beginning of period	$	2,377		$	4,924		$	2,965		$	523	$	159		$	278		$	—	$	252		$	11,478
Provision for loan losses	79			3,068			(405		)	63		34			65			—		35			2,939
Charge-offs	(581		)	(634		)	(87		)	—		—			(50		)	—		—			(1,352		)
Recoveries	14			22			8			—		—			36			—		—			80
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Three months ended September 30, 2012
Balance at the beginning of period	$	1,201		$	5,772		$	1,884		$	677	$	231		$	344		$	—	$	(215	)	$	9,894
Provision for loan losses	105			308			(14		)	76		(23		)	59			—		502			1,013
Charge-offs	(3		)	—			(8		)	—		—			(23		)	—		—			(34		)
Recoveries	—			14			1			—		—			13			—		—			28
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901
Nine months ended September 30, 2012
Balance at the beginning of period	$	1,259		$	5,051		$	1,964		$	317	$	209		$	235		$	—	$	25		$	9,060
Provision for loan losses	125			1,182			77			436		(1		)	174			—		262			2,255
Charge-offs	(81		)	(203		)	(179		)	—		—			(61		)	—		—			(524		)
Recoveries	—			64			1			—		—			45			—		—			110
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901

The following table details the amount of the allowance for loan losses and recorded investment in loans by class as of September 30, 2013 and December 31, 2012:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Unallocated		Total
At September 30, 2013
Allowance for losses:
Individually evaluated for impairment	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	—	$	708
Collectively evaluated for impairment	1,765		6,891		2,409		586		193		306		—		287		12,437
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	1,889	$	7,380	$	2,481	$	586	$	193	$	329	$	—	$	287	$	13,145
Loans:
Individually evaluated for impairment	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	—	$	12,248
Collectively evaluated for impairment	207,083		855,305		327,421		77,493		31,445		41,676		60		—		1,540,483
Acquired with deteriorated credit quality	1,743		542		582		—		—		—		—		—		2,867
Ending balance	$	209,453	$	864,088	$	331,312	$	77,493	$	31,445	$	41,747	$	60	$	—	$	1,555,598
At December 31, 2012
Allowance for losses:
Individually evaluated for impairment	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	—	$	989
Collectively evaluated for impairment	2,212		4,280		2,801		523		159		262		—		252		10,489
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	2,377	$	4,924	$	2,965	$	523	$	159	$	278	$	—	$	252	$	11,478
Loans:
Individually evaluated for impairment	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	—	$	14,806
Collectively evaluated for impairment	166,965		732,581		301,259		67,361		40,127		39,397		73		—		1,347,763
Acquired with deteriorated credit quality	2,193		2,641		1,552		559		—		—		—		—		6,945
Ending balance	$	169,882	$	745,823	$	306,187	$	67,920	$	40,127	$	39,502	$	73	$	—	$	1,369,514

Summary of Nonperforming Loans by Loan Class

Nonperforming loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
September 30, 2013:
Nonaccrual loans	$	189	$	827	$	1,816	$	—	$	—	$	43	$	—	$	2,875
Loans past due 90 days and still accruing	—		—		—		—		—		—		—		—
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	114		3,102		571		—		—		1		—		3,788
	$	303	$	3,929	$	2,387	$	—	$	—	$	44	$	—	$	6,663
December 31, 2012:
Nonaccrual loans	$	218	$	4,857	$	894	$	560	$	—	$	70	$	—	$	6,599
Loans past due 90 days and still accruing	—		—		—		—		—		2		—		2
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	481		1,778		2,165		—		—		9		—		4,433
	$	699	$	6,635	$	3,059	$	560	$	—	$	81	$	—	$	11,034

Impaired Loans by Loan Class

Impaired loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
At September 30, 2013:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	478	$	3,245	$	1,324	$	—	$	—	$	45	$	—	$	5,092
Impaired loans with no allowance for loan losses	149		4,996		1,985		—		—		26		—		7,156
Total	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	12,248
Unpaid principal balance of impaired loans	$	627	$	8,630	$	3,337	$	—	$	—	$	71	$	—	$	12,665
Allowance for loan losses on impaired loans	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	708
At December 31, 2012:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	644	$	5,532	$	1,301	$	—	$	—	$	73	$	—	$	7,550
Impaired loans with no allowance for loan losses	80		5,069		2,075		—		—		32		—		7,256
Total	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	14,806
Unpaid principal balance of impaired loans	$	741	$	11,140	$	3,475	$	—	$	—	$	122	$	—	$	15,478
Allowance for loan losses on impaired loans	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	989
For the three months ended September 30, 2013:
Average recorded investment in impaired loans	$	599	$	8,095	$	3,394	$	—	$	—	$	73	$	—	$	12,161
Interest income recognized on impaired loans	$	4	$	112	$	34	$	—	$	—	$	1	$	—	$	151
For the nine months ended September 30, 2013:
Average recorded investment in impaired loans	$	687	$	8,833	$	3,435	$	—	$	—	$	83	$	—	$	13,038
Interest income recognized on impaired loans	$	26	$	347	$	120	$	—	$	—	$	4	$	—	$	497
For the three months ended September 30, 2012:
Average recorded investment in impaired loans	$	736	$	13,396	$	3,939	$	41	$	—	$	141	$	—	$	18,253
Interest income recognized on impaired loans	$	15	$	277	$	108	$	4	$	—	$	3	$	—	$	407
For the nine months ended September 30, 2012:
Average recorded investment in impaired loans	$	784	$	13,331	$	4,205	$	43	$	—	$	134	$	—	$	18,497
Interest income recognized on impaired loans	$	39	$	520	$	181	$	4	$	—	$	7	$	—	$	751

Summary of Troubled Debt Restructurings

Following is a summary of loans modified under troubled debt restructurings during the three and nine months ended September 30, 2013 and 2012:

.

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
Troubled debt restructurings during the three months ended September 30, 2013:
Number of contracts	—		1		—		—		—		—		—		1
Pre-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Post-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Troubled debt restructurings during the nine months ended September 30, 2013:
Number of contracts	—		2		—		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Post-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Troubled debt restructurings during the three months ended September 30, 2012:
Number of contracts	—		—		2		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Post-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Troubled debt restructurings during the nine months ended September 30, 2012:
Number of contracts	2		1		3		—		—		1		—		7
Pre-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398
Post-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398

Aging of Past Due Loans by Loan Class

The following table presents information regarding the aging of past due loans by loan class as of September 30, 2013 and December 31, 2012:

	Loans 30-89 Days Past Due		Loans 90 or More Past Due		Total Past Due Loans		Current Loans		Total Loans
September 30, 2013
Commercial	$	1,202	$	184	$	1,386	$	208,067	$	209,453
Commercial real estate, land and land  development	2,087		631		2,718		861,370		864,088
Residential real estate	348		1,523		1,871		329,441		331,312
Single-family interim construction	173		—		173		77,320		77,493
Agricultural	8		—		8		31,437		31,445
Consumer	41		26		67		41,680		41,747
Other	—				—		60		60
	$	3,859	$	2,364	$	6,223	$	1,549,375	$	1,555,598
December 31, 2012
Commercial	$	845	$	—	$	845	$	169,037	$	169,882
Commercial real estate, land and land  development	3,091		62		3,153		742,670		745,823
Residential real estate	1,305		360		1,665		304,522		306,187
Single-family interim construction	—		559		559		67,361		67,920
Agricultural	23		—		23		40,104		40,127
Consumer	110		32		142		39,360		39,502
Other	—		—		—		73		73
	$	5,374	$	1,013	$	6,387	$	1,363,127	$	1,369,514

Summary of Loans by Credit Quality Indicator by Class

A summary of loans by credit quality indicator by class as of September 30, 2013 and December 31, 2012, is as follows:

	Pass (Rating 1-4)		Pass/ Watch		OAEM		Substandard		Doubtful		Total
September 30, 2013
Commercial	$	199,777	$	2,148	$	5,734	$	1,794	$	—	$	209,453
Commercial real estate, construction, land  and land development	841,665		10,169		4,173		8,081		—		864,088
Residential real estate	321,518		5,623		443		3,728		—		331,312
Single-family interim construction	77,128		365		—		—		—		77,493
Agricultural	31,199		214		—		32		—		31,445
Consumer	41,664		1		15		67		—		41,747
Other	60		—		—		—		—		60
	$	1,513,011	$	18,520	$	10,365	$	13,702	$	—	$	1,555,598
December 31, 2012
Commercial	$	165,842	$	2,824	$	203	$	1,013	$	—	$	169,882
Commercial real estate, construction, land  and land development	716,243		11,502		8,804		9,274		—		745,823
Residential real estate	295,870		4,303		867		5,039		108		306,187
Single-family interim construction	67,360		—		—		560		—		67,920
Agricultural	39,936		147		—		44		—		40,127
Consumer	39,315		60		13		114		—		39,502
Other	73		—		—		—		—		73
	$	1,324,639	$	18,836	$	9,887	$	16,044	$	108	$	1,369,514

Outstanding Balance and Related Carrying Amount of Purchased Impaired Loans

The outstanding balance and related carrying amount of purchased credit impaired loans at September 30, 2013, December 31, 2012, and acquisition date are as follows:

	September 30, 2013			December 31, 2012			Acquisition Date
Outstanding balance	$	3,632		$	9,178		$	10,839
Nonaccretable difference	(765		)	(2,232		)	(2,590		)
Accretable yield	—			(1		)	(27		)
Carrying amount	$	2,867		$	6,945		$	8,222

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Loans, Net and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	$ 1,555,598	$ 1,369,514
Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	209,453	169,882
Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	864,088	745,823
Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	331,312	306,187
Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	77,493	67,920
Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	31,445	40,127
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	41,747	39,502
Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	60	73
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	1,513,011	1,324,639
Pass | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	199,777	165,842
Pass | Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	841,665	716,243
Pass | Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	321,518	295,870
Pass | Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	77,128	67,360
Pass | Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	31,199	39,936
Pass | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	41,664	39,315
Pass | Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	60	73
Pass Watch
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	18,520	18,836
Pass Watch | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	2,148	2,824
Pass Watch | Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	10,169	11,502
Pass Watch | Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	5,623	4,303
Pass Watch | Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	365	0
Pass Watch | Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	214	147
Pass Watch | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	1	60
Pass Watch | Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	10,365	9,887
OAEM | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	5,734	203
OAEM | Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	4,173	8,804
OAEM | Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	443	867
OAEM | Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
OAEM | Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
OAEM | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	15	13
OAEM | Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	13,702	16,044
Substandard | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	1,794	1,013
Substandard | Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	8,081	9,274
Substandard | Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	3,728	5,039
Substandard | Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	560
Substandard | Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	32	44
Substandard | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	67	114
Substandard | Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	108
Doubtful | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful | Commercial Real Estate, Land and Land Development
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful | Real estate, Residential
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	108
Doubtful | Single-Family Interim Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful | Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful | Other Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, gross	$ 0	$ 0

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Fair Value Measurements-Assets and Liabilities at Fair Value on Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	$ 1,111
Impaired loans | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	0	0
Impaired loans | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	0	0
Impaired loans | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	1,111	5,146
Impaired loans | Fair Value, Gain Loss
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period Ended Total Losses	282	187
Impaired loans | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	1,111	5,146
Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	2,768
Other real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	0	0
Other real estate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	0	0
Other real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	2,768	748
Other real estate | Fair Value, Gain Loss
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period Ended Total Losses	0	94
Other real estate | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, measured on a nonrecurring basis	$ 2,768	$ 748

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Loans, Net and Allowance for Loan Losses-Summary of Activity in Allowance for Loan Losses by Loan Class (Details) (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
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 12,762	$ 9,894	$ 11,478	$ 9,060
Provision for loan losses	830	1,013	2,939	2,255
Charge-offs	(475)	(34)	(1,352)	(524)
Recoveries	28	28	80	110
Ending balance	13,145	10,901	13,145	10,901
Allowance for losses:
Individually evaluated for impairment	708		708		989
Collectively evaluated for impairment	12,437		12,437		10,489
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	13,145	10,901	13,145	10,901
Loans:
Individually evaluated for impairment	12,248		12,248		14,806
Collectively evaluated for impairment	1,540,483		1,540,483		1,347,763
Acquired with deteriorated credit quality	2,867		2,867		6,945
Ending balance	1,555,598		1,555,598		1,369,514
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,970	1,201	2,377	1,259
Provision for loan losses	264	105	79	125
Charge-offs	(350)	(3)	(581)	(81)
Recoveries	5	0	14	0
Ending balance	1,889	1,303	1,889	1,303
Allowance for losses:
Individually evaluated for impairment	124		124		165
Collectively evaluated for impairment	1,765		1,765		2,212
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	1,889	1,303	1,889	1,303
Loans:
Individually evaluated for impairment	627		627		724
Collectively evaluated for impairment	207,083		207,083		166,965
Acquired with deteriorated credit quality	1,743		1,743		2,193
Ending balance	209,453		209,453		169,882
Commercial Real Estate, Land and Land Development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,044	5,772	4,924	5,051
Provision for loan losses	401	308	3,068	1,182
Charge-offs	(78)	0	(634)	(203)
Recoveries	13	14	22	64
Ending balance	7,380	6,094	7,380	6,094
Allowance for losses:
Individually evaluated for impairment	489		489		644
Collectively evaluated for impairment	6,891		6,891		4,280
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	7,380	6,094	7,380	6,094
Loans:
Individually evaluated for impairment	8,241		8,241		10,601
Collectively evaluated for impairment	855,305		855,305		732,581
Acquired with deteriorated credit quality	542		542		2,641
Ending balance	864,088		864,088		745,823
Residential Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,567	1,884	2,965	1,964
Provision for loan losses	(67)	(14)	(405)	77
Charge-offs	(21)	(8)	(87)	(179)
Recoveries	2	1	8	1
Ending balance	2,481	1,863	2,481	1,863
Allowance for losses:
Individually evaluated for impairment	72		72		164
Collectively evaluated for impairment	2,409		2,409		2,801
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	2,481	1,863	2,481	1,863
Loans:
Individually evaluated for impairment	3,309		3,309		3,376
Collectively evaluated for impairment	327,421		327,421		301,259
Acquired with deteriorated credit quality	582		582		1,552
Ending balance	331,312		331,312		306,187
Single-Family Interim Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	540	677	523	317
Provision for loan losses	46	76	63	436
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	586	753	586	753
Allowance for losses:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	586		586		523
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	586	753	586	753
Loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	77,493		77,493		67,361
Acquired with deteriorated credit quality	0		0		559
Ending balance	77,493		77,493		67,920
Agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	210	231	159	209
Provision for loan losses	(17)	(23)	34	(1)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	193	208	193	208
Allowance for losses:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	193		193		159
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	193	208	193	208
Loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	31,445		31,445		40,127
Acquired with deteriorated credit quality	0		0		0
Ending balance	31,445		31,445		40,127
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	350	344	278	235
Provision for loan losses	(3)	59	65	174
Charge-offs	(26)	(23)	(50)	(61)
Recoveries	8	13	36	45
Ending balance	329	393	329	393
Allowance for losses:
Individually evaluated for impairment	23		23		16
Collectively evaluated for impairment	306		306		262
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	329	393	329	393
Loans:
Individually evaluated for impairment	71		71		105
Collectively evaluated for impairment	41,676		41,676		39,397
Acquired with deteriorated credit quality	0		0		0
Ending balance	41,747		41,747		39,502
Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	0	0
Provision for loan losses	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	0	0	0	0
Allowance for losses:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	0		0		0
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	0	0	0	0
Loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	60		60		73
Acquired with deteriorated credit quality	0		0		0
Ending balance	60		60		73
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	81	(215)	252	25
Provision for loan losses	206	502	35	262
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	287	287	287	287
Allowance for losses:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	287		287		252
Loans acquired with deteriorated credit quality	0		0		0
Ending balance	287	287	287	287
Loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	0		0		0
Acquired with deteriorated credit quality	0		0		0
Ending balance	$ 0		$ 0		$ 0

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Securities Available for Sale-Amortized Cost and Estimated Fair Value of Securities Available for Sale by Contractual Maturity (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Amortized Cost
Due in one year or less	$ 6,093
Due from one year to five years	58,361
Due from five to ten years	35,108
Thereafter	32,747
Total	132,309
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	448
Total	132,757	110,777
Fair Value
Due in one year or less	6,133
Due from one year to five years	57,966
Due from five to ten years	35,081
Thereafter	31,332
Total	130,512
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	475
Fair Value	$ 130,987	$ 113,355

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Securities Available for Sale-Summary of Unrealized Losses and Fair Value of Securities in COntinuous Unrealized Loss Positions (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Estimated Fair Value	$ 63,147	$ 7,541
Less than 12 months: Unrealized Losses	(2,495)	(242)
Greater Than 12 Months: Estimated Fair Value	0	0
Greater Than 12 Months: Unrealized Losses	0	0
Total: Estimated Fair Value	63,147	7,541
Total: Unrealized Losses	(2,495)	(242)
Government agency securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities	29
Less than 12 months: Estimated Fair Value	45,643
Less than 12 months: Unrealized Losses	(644)
Greater Than 12 Months: Estimated Fair Value	0
Greater Than 12 Months: Unrealized Losses	0
Total: Estimated Fair Value	45,643
Total: Unrealized Losses	(644)
Obligations of state and municipal subdivisions
Schedule of Available-for-sale Securities [Line Items]
Number of Securities	27	9
Less than 12 months: Estimated Fair Value	15,460	6,551
Less than 12 months: Unrealized Losses	(1,810)	(217)
Greater Than 12 Months: Estimated Fair Value		0
Greater Than 12 Months: Unrealized Losses		0
Total: Estimated Fair Value	15,460	6,551
Total: Unrealized Losses	(1,810)	(217)
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Number of Securities	2	1
Less than 12 months: Estimated Fair Value	2,044	990
Less than 12 months: Unrealized Losses	(41)	(25)
Greater Than 12 Months: Estimated Fair Value	0	0
Greater Than 12 Months: Unrealized Losses	0	0
Total: Estimated Fair Value	2,044	990
Total: Unrealized Losses	$ (41)	$ (25)

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Financial Instruments with Off-Balance Sheet Risk

The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. The commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the balance sheet.

The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of this instrument. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. At September 30, 2013 and December 31, 2012, the approximate amounts of these financial instruments were as follows:

	September 30,		December 31,
	2013		2012
Commitments to extend credit	$	286,616	$	153,932
Standby letters of credit	2,229		2,704
	$	288,845	$	156,636

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained if deemed necessary by the Company upon extension of credit is based on management’s credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, farm crops, property, plant and equipment and income-producing commercial properties.

Letters of credit are written conditional commitments used by the Company to guarantee the performance of a customer to a third party. The Company’s policies generally require that letter of credit arrangements contain security and debt covenants similar to those contained in loan arrangements. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount shown in the table above. If the commitment is funded, the Company would be entitled to seek recovery from the customer. As of September 30, 2013 and December 31, 2012, no amounts have been recorded as liabilities for the Company’s potential obligations under these guarantees.

Litigation

The Company is involved in certain legal actions arising from normal business activities. Management believes that the outcome of such proceedings will not materially affect the financial position, results of operations or cash flows of the Company.

Lease Commitments

The Company leases certain branch facilities and other facilities. Rent expense related to these leases amounted to $168 and $538 for the three and nine months ended September 30, 2013, respectively, and $103 and $267 for the three and nine months ended September 30, 2012, respectively.

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Summary of Significant Accounting Policies-EPS (Details) (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 [Line Items]
Net income	$ 3,959	$ 4,493	$ 15,521	$ 11,288
Undistributed earnings allocated to participating securities	68	41	184	112
Dividends paid on participating securities	15	44	119	111
Net income available to common shareholders	3,876	4,408	15,218	11,065
Weighted-average basic shares outstanding (shares)	11,823,655	7,718,276	10,588,554	7,502,758
Basic earnings per share (usd per share)	$ 0.33	$ 0.57	$ 1.44	$ 1.47
Add dilutive stock warrants (shares)	74,229	23,126	58,874	23,126
Total weighted-average diluted shares outstanding (shares)	11,897,884	7,741,402	10,647,428	7,525,884
Diluted earnings per share (usd per share)	$ 0.33	$ 0.57	$ 1.43	$ 1.47
Anti-dilutive participating securities (shares)	151,674	106,941	139,416	102,086
Pro Forma [Member]
Earnings Per Share [Line Items]
Net income		3,046	11,895	7,653
Undistributed earnings allocated to participating securities		14	113	40
Dividends paid on participating securities		44	119	111
Net income available to common shareholders		$ 2,988	$ 11,663	$ 7,502
Pro forma basic earnings per share (usd per share)		$ 0.39	$ 1.10	$ 1.00
Pro forma diluted earnings per share (usd per share)		$ 0.39	$ 1.10	$ 1.00

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Loans, Net and Allowance for Loan Losses-Summary of Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 contract	Sep. 30, 2012 contract	Sep. 30, 2013 contract	Sep. 30, 2012 contract
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	1	2	2	7
Pre-restructuring outstanding recorded investment	$ 640	$ 1,825	$ 1,460	$ 2,398
Post-restructuring outstanding recorded investment	640	1,825	1,460	2,398
Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	0	0	2
Pre-restructuring outstanding recorded investment	0	0	0	351
Post-restructuring outstanding recorded investment	0	0	0	351
Commercial Real Estate, Land and Land Development
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	1	0	2	1
Pre-restructuring outstanding recorded investment	640	0	1,460	101
Post-restructuring outstanding recorded investment	640	0	1,460	101
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	2	0	3
Pre-restructuring outstanding recorded investment	0	1,825	0	1,920
Post-restructuring outstanding recorded investment	0	1,825	0	1,920
Single-Family Interim Construction
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	0	0	0
Pre-restructuring outstanding recorded investment	0	0	0	0
Post-restructuring outstanding recorded investment	0	0	0	0
Agricultural
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	0	0	0
Pre-restructuring outstanding recorded investment	0	0	0	0
Post-restructuring outstanding recorded investment	0	0	0	0
Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	0	0	1
Pre-restructuring outstanding recorded investment	0	0	0	26
Post-restructuring outstanding recorded investment	0	0	0	26
Other Loan
Financing Receivable, Modifications [Line Items]
Number of contracts (contracts)	0	0	0	0
Pre-restructuring outstanding recorded investment	0	0	0	0
Post-restructuring outstanding recorded investment	$ 0	$ 0	$ 0	$ 0

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Fair Value Measurements

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820, Fair Value Measurements and Disclosures, 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 – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

Level 3 Inputs – Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.

The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of September 30, 2013 and December 31, 2012 by level within the ASC Topic 820 fair value measurement hierarchy:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,521	$	—	$	3,521	$	—
Government agency securities	88,407		—		88,407		—
Obligations of state and municipal subdivisions	36,540		—		36,540		—
Corporate bonds	2,044		—		2,044		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	475		—		475		—
Liabilities:
Contingent consideration	—		—		—		—
December 31, 2012
Measured on a recurring basis:
Assets:
Investment securities available for sale:
U.S. treasuries	$	3,547	$	—	$	3,547	$	—
Government agency securities	70,211		—		70,211		—
Obligations of state and municipal subdivisions	36,814		—		36,814		—
Corporate bonds	2,103		—		2,103		—
Residential mortgage backed securities guaranteed  by FNMA, GNMA, FHLMC and SBA	680		—		680		—
Liabilities:
Contingent consideration	290		—		—		290

There were no transfers between Level 1 and Level 2 categorizations for the periods presented.

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

Securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury and other yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things.

Contingent consideration, related to the acquisition of Town Center Bank in 2010, is reported at fair value using Level 3 inputs. The contingent consideration is remeasured on a recurring basis based on the expected present value of cash flows to be paid to the shareholders of the acquired institution using a market discount rate. In August 2013, the Company paid the final contingent payment of $287.

The following table presents the activity in the contingent consideration for the nine months ended September 30, 2013 and 2012:

	Nine months ended September 30,
	2013			2012
Balance, beginning of period	$	290		$	821
Settlements	(287		)	(393		)
Change in estimated payments to be made	(3		)	(2		)
Balance, end of period	$	—		$	426

In accordance with ASC Topic 820, certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, the assets and liabilities are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following table presents the assets carried on the consolidated balance sheet by caption and by level in the fair value hierarchy at September 30, 2013 and December 31, 2012, for which a nonrecurring change in fair value has been recorded:

			Fair Value Measurements at Reporting Date Using
	Assets/ Liabilities Measured at Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Period Ended Total Losses
September 30, 2013
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	1,111	$	—	$	—	$	1,111	$	282
Other real estate	2,768		—		—		2,768		475
December 31, 2012
Measured on a nonrecurring basis:
Assets:
Impaired loans	$	5,146	$	—	$	—	$	5,146	$	187
Other real estate	748		—		—		748		94

Impaired loans (loans which are not expected to repay all principal and interest amounts due in accordance with the original contractual terms) are measured at an observable market price (if available) or at the fair value of the loan’s collateral (if collateral dependent). Fair value of the loan’s collateral is determined by appraisals or independent valuation which is then adjusted for the estimated costs related to liquidation of the collateral. Management’s ongoing review of appraisal information may result in additional discounts or adjustments to valuation based upon more recent market sales activity or more current appraisal information derived from properties of similar type and/or locale. Therefore, the Company has categorized its impaired loans as Level 3.

The Company has no nonfinancial assets or nonfinancial liabilities measured at fair value on a recurring basis. Other real estate is measured at fair value on a nonrecurring basis (upon initial recognition or subsequent impairment). Other real estate is classified within Level 3 of the valuation hierarchy. When transferred from the loan portfolio, other real estate is adjusted to fair value less estimated selling costs and is subsequently carried at the lower of carrying value or fair value less estimated selling costs. The fair value is determined using an external appraisal process, discounted based on internal criteria.

There were no transfers into or out of Level 3 categorization for the periods presented.

For Level 3 financial and nonfinancial assets and liabilities measured at fair value at September 30, 2013, the significant unobservable inputs used in the fair value measurements are as follows:

Assets/Liabilities	Fair Value		Valuation Technique	Unobservable Input(s)	Weighted Average
Impaired loans	$	1,111	Collateral method	Adjustments for selling costs	8%
Other real estate	2,768		Collateral method	Adjustments for selling costs	8%

The methods and assumptions used by the Company in estimating fair values of financial instruments as disclosed herein in accordance with ASC Topic 825, Financial Instruments, other than for those measured at fair value on a recurring and nonrecurring basis discussed above, are as follows:

Cash and cash equivalents: The carrying amounts of cash and cash equivalents approximate their fair value.

Certificates of deposit held in other banks: The carrying amount of certificates of deposit in other banks, which mature within one year, approximates fair value.

Securities available for sale: Fair values for securities are based on quoted market prices or other 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 spreads, credit information and the bond’s terms and conditions, among other things.

Loans and loans held for sale: For variable-rate loans that reprice frequently and have no significant changes in credit risk, fair values are based on carrying values. Fair values for certain mortgage loans (for example, one-to-four family residential), commercial real estate and commercial loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.

Federal Home Loan Bank of Dallas and other restricted stock: The carrying value of restricted securities such as stock in the Federal Home Loan Bank of Dallas and Independent Bankers Financial Corporation approximates fair value.

Deposits: The fair values disclosed for demand deposits are, by definition, equal to the amount payable on demand at the reporting date (that is their carrying amounts). The carrying amounts of variable-rate certificates of deposit (CDs) approximate their fair values at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits.

Federal Home Loan Bank advances, line of credit and federal funds purchased: The fair value of advances maturing within 90 days approximates carrying value. Fair value of other advances is based on the Company’s current borrowing rate for similar arrangements.

Notes payable and other borrowings: The fair values are based upon prevailing rates on similar debt in the market place.

Junior subordinated debentures: The fair value of junior subordinated debentures is estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements.

Accrued interest: The carrying amounts of accrued interest approximate their fair values.

Contingent Consideration: The contingent consideration liability related to an acquisition is based on the expected present value of cash flows to be paid to the shareholders of the acquired institution using a market discount rate.

Off-balance sheet instruments: Commitments to extend credit and standby letters of credit have short maturities and therefore have no significant fair value.

The carrying amount, estimated fair value and the level of the fair value hierarchy of the Company’s financial instruments were as follows at September 30, 2013 and December 31, 2012:

					Fair Value Measurements at Reporting Date Using
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2013
Financial assets:
Cash and cash equivalents	$	120,281	$	120,281	$	120,281	$	—	$	—
Certificates of deposit held in other banks	348		348		—		348		—
Securities available for sale	130,987		130,987		—		130,987		—
Loans held for sale	4,254		4,254		—		4,254		—
Loans, net	1,542,453		1,559,313		—		1,554,929		4,384
FHLB of Dallas stock and other restricted stock	8,324		8,324		—		8,324		—
Accrued interest receivable	4,595		4,595		—		4,595		—
Financial liabilities:
Deposits	1,540,748		1,542,753		—		1,542,753		—
Accrued interest payable	879		879		—		879		—
FHLB advances	161,507		163,768		—		163,768		—
Other borrowings	7,730		7,983		—		7,983		—
Junior subordinated debentures	18,147		18,111		—		18,111		—
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—
December 31, 2012
Financial assets:
Cash and cash equivalents	$	102,290	$	102,290	$	102,290	$	—	$	—
Certificates of deposit held in other banks	7,720		7,720		—		7,720		—
Securities available for sale	113,355		113,355		—		113,355		—
Loans held for sale	9,162		9,162		—		9,162		—
Loans, net	1,358,036		1,399,938		—		1,393,377		6,561
FHLB of Dallas stock and other restricted stock	8,165		8,165		—		8,165		—
Accrued interest receivable	4,647		4,647		—		4,647		—
Financial liabilities:
Deposits	1,390,740		1,399,373		—		1,399,373		—
Accrued interest payable	985		985		—		985		—
FHLB advances	164,601		170,239		—		170,239		—
Notes payable	15,729		15,729		—		15,729		—
Other borrowings	20,788		20,970		—		20,970		—
Junior subordinated debentures	18,147		18,114		—		18,114		—
Contingent consideration	290		290		—		—		290
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—

XML

Loans, Net and Allowance for Loan Losses

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Loans, Net and Allowance for Loan Losses

Loans, Net and Allowance for Loan Losses

Loans, net at September 30, 2013 and December 31, 2012, consisted of the following:

	September 30, 2013			December 31, 2012
Commercial	$	209,453		$	169,882
Real estate:
Commercial	768,427			648,494
Commercial construction, land and land development	95,661			97,329
Residential	331,312			306,187
Single family interim construction	77,493			67,920
Agricultural	31,445			40,127
Consumer	41,747			39,502
Other	60			73
	1,555,598			1,369,514
Allowance for loan losses	(13,145		)	(11,478		)
	$	1,542,453		$	1,358,036

The Company has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. Management reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and non-performing and potential problem loans.

Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. The Company’s management examines current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. Commercial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. These cash flows, however, may not be as expected and the value of collateral securing the loans may fluctuate. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short term loans may be made on an unsecured basis. Additionally, our commercial loan portfolio includes loans made to customers in the energy industry, which is a complex, technical and cyclical industry. Experienced bankers with specialized energy lending experience originate our energy loans. Companies in this industry produce, extract, develop, exploit and explore for oil and natural gas. Loans are primarily collateralized with proven producing oil and gas reserves based on a technical evaluation of these reserves.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally largely dependent on the successful operation of the property or the business conducted on the property securing the loan. Commercial real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Company’s commercial real estate portfolio are diverse in terms of type and geographic location. Management monitors the diversification of the portfolio on a quarterly basis by type and geographic location. Management also tracks the level of owner occupied property versus non owner occupied property.

Land and commercial land development loans are underwritten using feasibility studies, independent appraisal reviews and financial analysis of the developers or property owners. Generally, borrowers must have a proven track record of success. Commercial construction loans are generally based upon estimates of cost and value of the completed project. These estimates may not be accurate. Commercial construction loans often involve the disbursement of substantial funds with the repayment dependent on the success of the ultimate project. Sources of repayment for these loans may be pre-committed permanent financing or sale of the developed property. The loans in this portfolio are geographically diverse and due to the increased risk are monitored closely by management and the board of directors on a quarterly basis.

Residential real estate and single family interim construction loans are underwritten primarily based on borrowers’ credit scores, documented income and minimum collateral values. Relatively small loan amounts are spread across many individual borrowers which minimizes risk in the residential portfolio. In addition, management evaluates trends in past dues and current economic factors on a regular basis.

Agricultural loans are collateralized by real estate and/or non-real estate. Agricultural real estate loans are primarily comprised of loans for the purchase of farmland. Loan-to-value ratios on loans secured by farmland generally do not exceed 80% and have amortization periods limited to twenty years. Agricultural non-real estate loans are generally comprised of term loans to fund the purchase of equipment, livestock and seasonal operating lines to cash grain farmers to plant and harvest corn and soybeans. Specific underwriting standards have been established for agricultural-related loans including the establishment of projections for each operating year based on industry developed estimates of farm input costs and expected commodity yields and prices. Operating lines are typically written for one year and secured by the crop and other farm assets as considered necessary.

Agricultural loans carry significant credit risks as they involve larger balances concentrated with single borrowers or groups of related borrowers. In addition, repayment of such loans depends on the successful operation or management of the farm property securing the loan or for which an operating loan is utilized. Farming operations may be affected by adverse weather conditions such as drought, hail or floods that can severely limit crop yields.

Consumer loans represent less than 3% of the outstanding total loan portfolio. Collateral consists primarily of automobiles and other personal assets. Credit score analysis is used to supplement the underwriting process.

Most of the Company’s lending activity occurs within the State of Texas, primarily in the north and central Texas regions. The majority of the Company’s portfolio consists of commercial and residential real estate loans. As of September 30, 2013 and December 31, 2012, there were no concentrations of loans related to a single industry in excess of 10% of total loans.

The allowance for loan losses is an amount that management believes will be adequate to absorb estimated losses relating to specifically identified loans, as well as probable credit losses inherent in the balance of the loan portfolio.

The allowance is derived from the following two components: 1) allowances established on individual impaired loans, which are based on a review of the individual characteristics of each loan, including the customer’s ability to repay the loan, the underlying collateral values, and the industry the customer operates in, and 2) allowances based on actual historical loss experience for the last three years for similar types of loans in the Company’s loan portfolio adjusted for primarily changes in the lending policies and procedures; collection, charge-off and recovery practices; nature and volume of the loan portfolio; volume and severity of nonperforming loans; existence and effect of any concentrations of credit and the level of such concentrations and current, national and local economic and business conditions. This second component also includes an unallocated allowance to cover uncertainties that could affect management’s estimate of probable losses. The unallocated allowance reflects the imprecision inherent in the underlying assumptions used in the methodologies for estimating this component.

The Company’s management continually evaluates the allowance for loan losses determined from the allowances established on individual loans and the amounts determined from historical loss percentages adjusted for the qualitative factors above. Should any of the factors considered by management change, the Company’s estimate of loan losses could also change and would affect the level of future provision expense. While the calculation of the allowance for loan losses utilizes management’s best judgment and all the information available, the adequacy of the allowance for loan losses is dependent on a variety of factors beyond the Company’s control, including, among other things, the performance of the entire loan portfolio, the economy, changes in interest rates and the view of regulatory authorities towards loan classifications.

In addition, regulatory agencies, as an integral part of their examination process, periodically review the Bank’s allowance for loan losses, and may require the Bank to make additions to the allowance based on their judgment about information available to them at the time of their examinations.

Loans requiring an allocated loan loss provision are generally identified at the servicing officer level based on review of weekly past due reports and/or the loan officer’s communication with borrowers. In addition, past due loans are discussed at weekly officer loan committee meetings to determine if classification is warranted. The Company’s credit department has implemented an internal risk based loan review process to identity potential internally classified loans that supplements the annual independent external loan review. The external review generally covers all loans greater than one million dollars. These reviews include analysis of borrower’s financial condition, payment histories and collateral values to determine if a loan should be internally classified. Generally, once classified, an impaired loan analysis is completed by the credit department to determine if the loan is impaired and the amount of allocated allowance required.

The Texas economy, specifically the Company’s lending area of north and central Texas, has generally performed better and appears to be recovering faster than certain other parts of the country. However, Texas is not completely immune to the problems associated with the U.S. economy. The risk of loss associated with all segments of the loan portfolio continues to be impacted by the prolonged economic recovery.

The economy and other risk factors are minimized by the Company’s underwriting standards which include the following principles: 1) financial strength of the borrower including strong earnings, high net worth, significant liquidity and acceptable debt to worth ratio, 2) managerial business competence, 3) ability to repay, 4) loan to value, 5) projected cash flow and 6) guarantor financial statements as applicable. Following is a summary of the activity in the allowance for loan losses by loan class for the three and nine months ended September 30, 2013 and 2012:

	Commercial			Commercial Real Estate, Land and Land Development			Residential Real Estate			Single-Family Interim Construction		Agricultural			Consumer			Other		Unallocated			Total
Three months ended September 30, 2013
Balance at the beginning of period	$	1,970		$	7,044		$	2,567		$	540	$	210		$	350		$	—	$	81		$	12,762
Provision for loan losses	264			401			(67		)	46		(17		)	(3		)	—		206			830
Charge-offs	(350		)	(78		)	(21		)	—		—			(26		)	—		—			(475		)
Recoveries	5			13			2			—		—			8			—		—			28
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Nine months ended September 30, 2013
Balance at the beginning of period	$	2,377		$	4,924		$	2,965		$	523	$	159		$	278		$	—	$	252		$	11,478
Provision for loan losses	79			3,068			(405		)	63		34			65			—		35			2,939
Charge-offs	(581		)	(634		)	(87		)	—		—			(50		)	—		—			(1,352		)
Recoveries	14			22			8			—		—			36			—		—			80
Balance at end of period	$	1,889		$	7,380		$	2,481		$	586	$	193		$	329		$	—	$	287		$	13,145
Three months ended September 30, 2012
Balance at the beginning of period	$	1,201		$	5,772		$	1,884		$	677	$	231		$	344		$	—	$	(215	)	$	9,894
Provision for loan losses	105			308			(14		)	76		(23		)	59			—		502			1,013
Charge-offs	(3		)	—			(8		)	—		—			(23		)	—		—			(34		)
Recoveries	—			14			1			—		—			13			—		—			28
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901
Nine months ended September 30, 2012
Balance at the beginning of period	$	1,259		$	5,051		$	1,964		$	317	$	209		$	235		$	—	$	25		$	9,060
Provision for loan losses	125			1,182			77			436		(1		)	174			—		262			2,255
Charge-offs	(81		)	(203		)	(179		)	—		—			(61		)	—		—			(524		)
Recoveries	—			64			1			—		—			45			—		—			110
Balance at end of period	$	1,303		$	6,094		$	1,863		$	753	$	208		$	393		$	—	$	287		$	10,901

The following table details the amount of the allowance for loan losses and recorded investment in loans by class as of September 30, 2013 and December 31, 2012:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Unallocated		Total
At September 30, 2013
Allowance for losses:
Individually evaluated for impairment	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	—	$	708
Collectively evaluated for impairment	1,765		6,891		2,409		586		193		306		—		287		12,437
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	1,889	$	7,380	$	2,481	$	586	$	193	$	329	$	—	$	287	$	13,145
Loans:
Individually evaluated for impairment	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	—	$	12,248
Collectively evaluated for impairment	207,083		855,305		327,421		77,493		31,445		41,676		60		—		1,540,483
Acquired with deteriorated credit quality	1,743		542		582		—		—		—		—		—		2,867
Ending balance	$	209,453	$	864,088	$	331,312	$	77,493	$	31,445	$	41,747	$	60	$	—	$	1,555,598
At December 31, 2012
Allowance for losses:
Individually evaluated for impairment	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	—	$	989
Collectively evaluated for impairment	2,212		4,280		2,801		523		159		262		—		252		10,489
Loans acquired with deteriorated credit quality	—		—		—		—		—		—		—		—		—
Ending balance	$	2,377	$	4,924	$	2,965	$	523	$	159	$	278	$	—	$	252	$	11,478
Loans:
Individually evaluated for impairment	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	—	$	14,806
Collectively evaluated for impairment	166,965		732,581		301,259		67,361		40,127		39,397		73		—		1,347,763
Acquired with deteriorated credit quality	2,193		2,641		1,552		559		—		—		—		—		6,945
Ending balance	$	169,882	$	745,823	$	306,187	$	67,920	$	40,127	$	39,502	$	73	$	—	$	1,369,514

Nonperforming loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
September 30, 2013:
Nonaccrual loans	$	189	$	827	$	1,816	$	—	$	—	$	43	$	—	$	2,875
Loans past due 90 days and still accruing	—		—		—		—		—		—		—		—
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	114		3,102		571		—		—		1		—		3,788
	$	303	$	3,929	$	2,387	$	—	$	—	$	44	$	—	$	6,663
December 31, 2012:
Nonaccrual loans	$	218	$	4,857	$	894	$	560	$	—	$	70	$	—	$	6,599
Loans past due 90 days and still accruing	—		—		—		—		—		2		—		2
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	481		1,778		2,165		—		—		9		—		4,433
	$	699	$	6,635	$	3,059	$	560	$	—	$	81	$	—	$	11,034

Impaired loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will not be collected. The Company has identified these loans through its normal loan review procedures. Impaired loans are measured based on 1) the present value of expected future cash flows discounted at the loans effective interest rate; 2) the loans observable market price; or 3) the fair value of collateral if the loan is collateral dependent. Substantially all of the Company’s impaired loans are measured at the fair value of the collateral. In limited cases, the Company may use other methods to determine the level of impairment of a loan if such loan is not collateral dependent.

Impaired loans by loan class at September 30, 2013 and December 31, 2012, are summarized as follows:

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
At September 30, 2013:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	478	$	3,245	$	1,324	$	—	$	—	$	45	$	—	$	5,092
Impaired loans with no allowance for loan losses	149		4,996		1,985		—		—		26		—		7,156
Total	$	627	$	8,241	$	3,309	$	—	$	—	$	71	$	—	$	12,248
Unpaid principal balance of impaired loans	$	627	$	8,630	$	3,337	$	—	$	—	$	71	$	—	$	12,665
Allowance for loan losses on impaired loans	$	124	$	489	$	72	$	—	$	—	$	23	$	—	$	708
At December 31, 2012:
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses	$	644	$	5,532	$	1,301	$	—	$	—	$	73	$	—	$	7,550
Impaired loans with no allowance for loan losses	80		5,069		2,075		—		—		32		—		7,256
Total	$	724	$	10,601	$	3,376	$	—	$	—	$	105	$	—	$	14,806
Unpaid principal balance of impaired loans	$	741	$	11,140	$	3,475	$	—	$	—	$	122	$	—	$	15,478
Allowance for loan losses on impaired loans	$	165	$	644	$	164	$	—	$	—	$	16	$	—	$	989
For the three months ended September 30, 2013:
Average recorded investment in impaired loans	$	599	$	8,095	$	3,394	$	—	$	—	$	73	$	—	$	12,161
Interest income recognized on impaired loans	$	4	$	112	$	34	$	—	$	—	$	1	$	—	$	151
For the nine months ended September 30, 2013:
Average recorded investment in impaired loans	$	687	$	8,833	$	3,435	$	—	$	—	$	83	$	—	$	13,038
Interest income recognized on impaired loans	$	26	$	347	$	120	$	—	$	—	$	4	$	—	$	497
For the three months ended September 30, 2012:
Average recorded investment in impaired loans	$	736	$	13,396	$	3,939	$	41	$	—	$	141	$	—	$	18,253
Interest income recognized on impaired loans	$	15	$	277	$	108	$	4	$	—	$	3	$	—	$	407
For the nine months ended September 30, 2012:
Average recorded investment in impaired loans	$	784	$	13,331	$	4,205	$	43	$	—	$	134	$	—	$	18,497
Interest income recognized on impaired loans	$	39	$	520	$	181	$	4	$	—	$	7	$	—	$	751

Certain impaired loans have adequate collateral and do not require a related allowance for loan loss.

The Company will charge off that portion of any loan which management considers a loss. Commercial and real estate loans are generally considered for charge-off when exposure beyond collateral coverage is apparent and when no further collection of the loss portion is anticipated based on the borrower’s financial condition.

The restructuring of a loan is considered a “troubled debt restructuring” if both 1) the borrower is experiencing financial difficulties and 2) the creditor has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, extending amortization and other actions intended to minimize potential losses.

A “troubled debt restructured” loan is identified as impaired and measured for credit impairment as of each reporting period in accordance with the guidance in  Accounting Standards Codification (ASC) 310-10-35. The recorded investment in troubled debt restructurings, including those on nonaccrual, was $5,258 and $7,544 as of September 30, 2013 and December 31, 2012.

Following is a summary of loans modified under troubled debt restructurings during the three and nine months ended September 30, 2013 and 2012:

.

	Commercial		Commercial Real Estate, Land and Land Development		Residential Real Estate		Single-Family Interim Construction		Agricultural		Consumer		Other		Total
Troubled debt restructurings during the three months ended September 30, 2013:
Number of contracts	—		1		—		—		—		—		—		1
Pre-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Post-restructuring outstanding recorded investment	$	—	$	640	$	—	$	—	$	—	$	—	$	—	$	640
Troubled debt restructurings during the nine months ended September 30, 2013:
Number of contracts	—		2		—		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Post-restructuring outstanding recorded investment	$	—	$	1,460	$	—	$	—	$	—	$	—	$	—	$	1,460
Troubled debt restructurings during the three months ended September 30, 2012:
Number of contracts	—		—		2		—		—		—		—		2
Pre-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Post-restructuring outstanding recorded investment	$	—	$	—	$	1,825	$	—	$	—	$	—	$	—	$	1,825
Troubled debt restructurings during the nine months ended September 30, 2012:
Number of contracts	2		1		3		—		—		1		—		7
Pre-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398
Post-restructuring outstanding recorded investment	$	351	$	101	$	1,920	$	—	$	—	$	26	$	—	$	2,398

At September 30, 2013, there were no loans modified under troubled debt restructurings during the previous twelve month period that subsequently defaulted during the three and nine months ended September 30, 2013. At September 30, 2012, there was one consumer loan totaling $26 that was originated during the previous twelve month period that defaulted during the three and nine months ended September 30, 2012.

Modifications primarily relate to extending the amortization periods of the loans and interest rate concessions. The majority of these loans were identified as impaired prior to restructuring; therefore the modifications did not materially impact the Company’s determination of the allowance for loan loss.

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. The following table presents information regarding the aging of past due loans by loan class as of September 30, 2013 and December 31, 2012:

	Loans 30-89 Days Past Due		Loans 90 or More Past Due		Total Past Due Loans		Current Loans		Total Loans
September 30, 2013
Commercial	$	1,202	$	184	$	1,386	$	208,067	$	209,453
Commercial real estate, land and land  development	2,087		631		2,718		861,370		864,088
Residential real estate	348		1,523		1,871		329,441		331,312
Single-family interim construction	173		—		173		77,320		77,493
Agricultural	8		—		8		31,437		31,445
Consumer	41		26		67		41,680		41,747
Other	—				—		60		60
	$	3,859	$	2,364	$	6,223	$	1,549,375	$	1,555,598
December 31, 2012
Commercial	$	845	$	—	$	845	$	169,037	$	169,882
Commercial real estate, land and land  development	3,091		62		3,153		742,670		745,823
Residential real estate	1,305		360		1,665		304,522		306,187
Single-family interim construction	—		559		559		67,361		67,920
Agricultural	23		—		23		40,104		40,127
Consumer	110		32		142		39,360		39,502
Other	—		—		—		73		73
	$	5,374	$	1,013	$	6,387	$	1,363,127	$	1,369,514

The Company’s internal classified report is segregated into the following categories: 1) Pass/Watch, 2) Other Assets Especially Mentioned (OAEM), 3) Substandard and 4) Doubtful. The loans placed in the Pass/Watch category reflect the Company’s opinion that the loans reflect potential weakness which requires monitoring on a more frequent basis. The loans in the OAEM category reflect the Company’s opinion that the credit contains weaknesses which represent a greater degree of risk and warrant extra attention. These loans are reviewed monthly in the officers and directors loan committee meetings to determine if a change in category is warranted. The loans placed in the Substandard category are considered to be potentially inadequately protected by the current debt service capacity of the borrower and/or the pledged collateral. These credits, even if apparently protected by collateral value, have shown weakness related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. There is possibility that some future loss could be sustained by the Company if such weakness is not corrected. The Doubtful category includes loans that are in default or principal exposure is probable. Substandard and Doubtful loans are individually evaluated to determine if they should be classified as impaired and an allowance is allocated if deemed necessary under ASC 310-10.

The loans that are not impaired are included with the remaining “pass” credits in determining the portion of the allowance for loan loss based on historical loss experience and other qualitative factors. The portfolio is segmented into categories including: commercial loans, consumer loans, commercial real estate loans, residential real estate loans and agricultural loans. The adjusted historical loss percentage is applied to each category. Each category is then added together to determine the allowance allocated under ASC 450-20.

A summary of loans by credit quality indicator by class as of September 30, 2013 and December 31, 2012, is as follows:

	Pass (Rating 1-4)		Pass/ Watch		OAEM		Substandard		Doubtful		Total
September 30, 2013
Commercial	$	199,777	$	2,148	$	5,734	$	1,794	$	—	$	209,453
Commercial real estate, construction, land  and land development	841,665		10,169		4,173		8,081		—		864,088
Residential real estate	321,518		5,623		443		3,728		—		331,312
Single-family interim construction	77,128		365		—		—		—		77,493
Agricultural	31,199		214		—		32		—		31,445
Consumer	41,664		1		15		67		—		41,747
Other	60		—		—		—		—		60
	$	1,513,011	$	18,520	$	10,365	$	13,702	$	—	$	1,555,598
December 31, 2012
Commercial	$	165,842	$	2,824	$	203	$	1,013	$	—	$	169,882
Commercial real estate, construction, land  and land development	716,243		11,502		8,804		9,274		—		745,823
Residential real estate	295,870		4,303		867		5,039		108		306,187
Single-family interim construction	67,360		—		—		560		—		67,920
Agricultural	39,936		147		—		44		—		40,127
Consumer	39,315		60		13		114		—		39,502
Other	73		—		—		—		—		73
	$	1,324,639	$	18,836	$	9,887	$	16,044	$	108	$	1,369,514

The Company acquired certain loans which experienced credit deterioration since origination (purchased credit impaired (PCI) loans). Accretion on PCI loans is based on estimated future cash flows, regardless of contractual maturity.

The outstanding balance and related carrying amount of purchased credit impaired loans at September 30, 2013, December 31, 2012, and acquisition date are as follows:

	September 30, 2013			December 31, 2012			Acquisition Date
Outstanding balance	$	3,632		$	9,178		$	10,839
Nonaccretable difference	(765		)	(2,232		)	(2,590		)
Accretable yield	—			(1		)	(27		)
Carrying amount	$	2,867		$	6,945		$	8,222

At September 30, 2013 and December 31, 2012, there was no allocation established in the allowance for loan losses related to purchased credit impaired loans.

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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Statement of Stockholders' Equity [Abstract]
Dividends paid (usd per share)	$ 0.71	$ 0.74

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Fair Value Measurements-Assets and Liabilities at Fair Value on Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration		$ 0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration		0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration		290
U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	3,521	3,547
U.S. treasuries | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
U.S. treasuries | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	3,521	3,547
U.S. treasuries | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	88,407	70,211
Government agency securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Government agency securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	88,407	70,211
Government agency securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Obligations of state and municipal subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	36,540	36,814
Obligations of state and municipal subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Obligations of state and municipal subdivisions | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	36,540	36,814
Obligations of state and municipal subdivisions | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	2,044	2,103
Corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Corporate bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	2,044	2,103
Corporate bonds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	475	680
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	475	680
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale measured on a recurring basis	0	0
Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	290
Contingent consideration | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Contingent consideration | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Contingent consideration | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 0	$ 290

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Commitments and Contingencies - Additional 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
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 168	$ 103	$ 538	$ 267

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Securities Available for Sale-Amortized Cost of Securities and Approximate Fair Values (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 132,757	$ 110,777
Gross Unrealized Gains	725	2,820
Gross Unrealized Losses	(2,495)	(242)
Fair Value	130,987	113,355
U.S. treasuries
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,497	3,493
Gross Unrealized Gains	24	54
Fair Value	3,521	3,547
Government agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	88,854	69,636
Gross Unrealized Gains	197	575
Gross Unrealized Losses	(644)	0
Fair Value	88,407	70,211
Obligations of state and municipal subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	37,873	34,908
Gross Unrealized Gains	477	2,123
Gross Unrealized Losses	(1,810)	(217)
Fair Value	36,540	36,814
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,085	2,105
Gross Unrealized Gains	0	23
Gross Unrealized Losses	(41)	(25)
Fair Value	2,044	2,103
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	448	635
Gross Unrealized Gains	27	45
Fair Value	$ 475	$ 680

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Regulatory Matters-Actual Capital Amounts and Ratios (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Consolidated Entities [Member]
Regulatory Assets [Line Items]
Total Capital to Risk Weighted Assets, Actual Amount	$ 225,078	$ 137,553
Total Capital to Risk Weighted Assets, Actual Ratio (percent)	15.05%	10.51%
Total Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Amount	119,627	104,693
Total Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	8.00%	8.00%
Tier I Capital to Risk Weighted Assets, Actual Amount	205,203	107,539
Tier I Capital to Risk Weighted Assets, Actual Ratio (percent)	13.72%	8.22%
Tier I Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Amount	59,814	52,346
Tier I Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Tier I Capital to Average Assets, Actual Amount	205,203	107,539
Tier I Capital to Average Assets, Actual Ratio (percent)	10.74%	6.45%
Tier I Capital to Average Assets, Minimum Required for Capital Adequacy Purposes Amount	76,456	66,722
Tier I Capital to Average Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Independent Bank [Member]
Regulatory Assets [Line Items]
Total Capital to Risk Weighted Assets, Actual Amount	185,911	143,646
Total Capital to Risk Weighted Assets, Actual Ratio (percent)	12.53%	11.07%
Total Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Amount	118,684	103,790
Total Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	8.00%	8.00%
Total Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	148,355	129,738
Total Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	10.00%	10.00%
Tier I Capital to Risk Weighted Assets, Actual Amount	172,766	132,168
Tier I Capital to Risk Weighted Assets, Actual Ratio (percent)	11.65%	10.19%
Tier I Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Amount	59,342	51,895
Tier I Capital to Risk Weighted Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Tier I Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	89,013	77,843
Tier I Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	6.00%	6.00%
Tier I Capital to Average Assets, Actual Amount	172,766	132,168
Tier I Capital to Average Assets, Actual Ratio (percent)	9.10%	7.99%
Tier I Capital to Average Assets, Minimum Required for Capital Adequacy Purposes Amount	75,963	66,162
Tier I Capital to Average Assets, Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Tier I Capital to Average Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 94,954	$ 82,702
Tier I Capital to Average Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	5.00%	5.00%

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation: The accompanying consolidated financial statements include the accounts of IBG, its wholly-owned subsidiaries, the Bank and IBG Adriatica Holdings, Inc. (Adriatica) and the Bank’s wholly-owned subsidiaries, IBG Real Estate Holdings, Inc., and IBG Aircraft Acquisition, Inc. Adriatica was formed in 2011 to acquire a mixed use residential and retail real estate development in McKinney, Texas. All material intercompany transactions and balances have been eliminated in consolidation. In addition, the Company wholly-owns IB Trust I (Trust I), IB Trust II (Trust II), IB Trust III (Trust III), IB Centex Trust I (Centex Trust I) and Community Group Statutory Trust I (CGI Trust I). The Trusts were formed to issue trust preferred securities and do not meet the criteria for consolidation.

The consolidated interim financial statements are unaudited, but include all adjustments, which, in the opinion of management are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in the Company’s registration statement on Form S-1. The consolidated statement of condition at December 31, 2012 has been derived from the audited financial statements as of that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements.

Segment Reporting

Segment Reporting: The Company has one reportable segment. The Company’s chief operating decision-maker uses consolidated results to make operating and strategic decisions.

Income Taxes

Income Taxes: Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities (excluding deferred tax assets and liabilities related to business combinations or components of other comprehensive income). Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the level of historical income and estimates of future taxable income. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized.

The Company evaluates uncertain tax positions at the end of each reporting period. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.

The tax benefit recognized in the financial statements from any such a position is measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement.  Any interest and/or penalties related to income taxes are reported as a component of income tax expense.

The Company files a consolidated income tax return in U.S. federal jurisdiction and Texas.

Pro Forma Statements

Pro forma statements: Because the Company was not a taxable entity prior to April 1, 2013, pro forma amounts for income tax expense and basic and diluted earnings per share have been presented assuming the Company’s effective tax rate of 32.8% for the nine months ended September 30, 2013 and 32.2% for the three and nine months ended September 30, 2012, as if it had been a C Corporation during those periods. The difference in the statutory rate of 35% and the Company’s effective rate is primarily due to nontaxable income earned on municipal securities and bank owned life insurance. In addition, the pro forma results for the nine months ended September 30, 2013 excludes the initial deferred tax credit as discussed in Note 7.

Earnings Per Share

Earnings per share: Basic earnings per common share are net income divided by the weighted average number of common shares outstanding during the period. The unvested share-based payment awards that contain rights to non forfeitable dividends are considered participating securities for this calculation. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock warrants. The dilutive effect of participating non vested common stock was not included as it was anti-dilutive. Proceeds from the assumed exercise of dilutive stock warrants are assumed to be used to repurchase common stock at the average market price.

Subsequent Events

Subsequent events: The Company has evaluated subsequent events through the date of filing these financial statements with the SEC and noted no subsequent events requiring financial statement recognition or disclosure.

Reclassifications

Reclassifications: Certain prior period accounts have been reclassified to conform with current year presentation.

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Income Taxes (Notes)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Income tax expense was as follows:

	For the Three Months Ended September 30, 2013			For the Nine Months Ended September 30, 2013
Income tax expense for the period	$	1,927		$	3,932
Initial recording of deferred tax asset	—			(1,760		)
Income tax expense, as reported	$	1,927		$	2,172
Effective tax rate	32.7		%	12.3		%

In connection with the initial public offering as discussed in Note 1, the Company terminated its S-Corporation status and became a taxable entity (C Corporation) on April 1, 2013. As such, any periods prior to April 1, 2013 will not reflect income tax expense. The reported income tax expense for the nine months ended September 30, 2013 reflects the initial recording of the deferred tax net asset of $1,760, which is the result of timing differences in the recognition of income/deductions for generally accepted accounting principles (GAAP) and tax purposes. The consolidated statements of income present pro forma results of operations for the current year to date period and for prior year quarter and year to date periods. Without the initial recording of the deferred tax benefit, the effective tax rate would have been 32.8% for the nine months ended September 30, 2013. The difference in the statutory rate of 35% and the Company's effective tax rate is primarily due to nontaxable income earned on municipal securities and bank owned life insurance.

Components of deferred tax assets and liabilities are as follows:

	September 30, 2013
Deferred tax assets:
Allowance for loan losses	$	4,601
NOL carryforwards from acquisitions	993
Net unrealized loss on available for sale securities	620
Acquired loan fair market value adjustments	748
Restricted stock	918
Bonus accrual	306
Other real estate owned	397
Unearned rent income	59
Nonaccrual loans	67
Other	48
	8,757
Deferred tax liabilities:
Premises and equipment	(4,703		)
Core deposit intangibles	(953		)
Securities	(98		)
FHLB stock	(64		)
	(5,818		)
Net deferred tax asset	$	2,939

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Securities Available for Sale (Tables)

9 Months Ended

Sep. 30, 2013

Available-for-sale Securities [Abstract]

Amortized Cost of Securities and Approximate Fair Values

The amortized cost of securities and their approximate fair values at September 30, 2013 and December 31, 2012, are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Securities Available for Sale
September 30, 2013:
U.S. treasuries	$	3,497	$	24	$	—		$	3,521
Government agency securities	88,854		197		(644		)	88,407
Obligations of state and municipal subdivisions	37,873		477		(1,810		)	36,540
Corporate bonds	2,085		—		(41		)	2,044
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	448		27		—			475
	$	132,757	$	725	$	(2,495	)	$	130,987
December 31, 2012:
U.S. treasuries	$	3,493	$	54	$	—		$	3,547
Government agency securities	69,636		575		—			70,211
Obligations of state and municipal subdivisions	34,908		2,123		(217		)	36,814
Corporate bonds	2,105		23		(25		)	2,103
Residential mortgage-backed securities guaranteed by FNMA, GNMA, FHLMC and SBA	635		45		—			680
	$	110,777	$	2,820	$	(242	)	$	113,355

Proceeds from Sale, Gross Gains and Losses of Securities Available for Sale

Proceeds from sale of securities available for sale and gross gains and losses for the three and nine months ended September 30, 2013 and 2012 were as follows:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Proceeds from sale	$	—	$	—	$	—	$	2,078
Gross gains	$	—	$	—	$	—	$	—
Gross losses	$	—	$	—	$	—	$	3

Amortized Cost and Estimated Fair Value of Securities Available for Sale by Contractual Maturity

The amortized cost and estimated fair value of securities available for sale at September 30, 2013, by contractual maturity, are shown below. Maturities of pass-through certificates will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	September 30, 2013
	Securities Available for Sale
	Amortized Cost		Fair Value
Due in one year or less	$	6,093	$	6,133
Due from one year to five years	58,361		57,966
Due from five to ten years	35,108		35,081
Thereafter	32,747		31,332
	132,309		130,512
Residential mortgage-backed securities guaranteed by FNMA,  GNMA, FHLMC and SBA	448		475
	$	132,757	$	130,987

Summary of Unrealized Losses and Fair Value Securities in Continuous Unrealized Loss Position

The number of securities, unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of September 30, 2013 and December 31, 2012, are summarized as follows:   

		Value Impaired
		Less Than 12 Months					Greater Than 12 Months				Total
Description of Securities	Number of Securities	Estimated Fair Value		Unrealized Losses			Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Securities Available for Sale
September 30, 2013
Government agency securities	29	$	45,643	$	(644	)	$	—	$	—	$	45,643	$	(644	)
Obligations of state and municipal subdivisions	27	15,460		(1,810		)	—		—		15,460		(1,810		)
Corporate bonds	2	2,044		(41		)	—		—		2,044		(41		)
		$	63,147	$	(2,495	)	$	—	$	—	$	63,147	$	(2,495	)
December 31, 2012
Obligations of state and municipal subdivisions	9	$	6,551	$	(217	)	$	—	$	—	$	6,551	$	(217	)
Corporate bonds	1	990		(25		)	—		—		990		(25		)
		$	7,541	$	(242	)	$	—	$	—	$	7,541	$	(242	)

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Earning Per Share

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Basic earnings per share:
Net income	$	3,959	$	4,493	$	15,521	$	11,288
Less:
Undistributed earnings allocated to participating securities	68		41		184		112
Dividends paid on participating securities	15		44		119		111
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Basic earnings per share	$	0.33	$	0.57	$	1.44	$	1.47
Diluted earnings per share:
Net income available to common shareholders	$	3,876	$	4,408	$	15,218	$	11,065
Total weighted-average basic shares outstanding	11,823,655		7,718,276		10,588,554		7,502,758
Add dilutive stock warrants	74,229		23,126		58,874		23,126
Total weighted-average diluted shares outstanding	11,897,884		7,741,402		10,647,428		7,525,884
Diluted earnings per share	$	0.33	$	0.57	$	1.43	$	1.47
Pro forma earnings per share:
Pro forma net income	n/a		$	3,046	$	11,895	$	7,653
Less undistributed earnings allocated to participating securities	n/a		14		113		40
Less dividends paid on participating securities	n/a		44		119		111
Pro forma net income available to common shareholders after tax	n/a		$	2,988	$	11,663	$	7,502
Pro forma basic earnings per share	n/a		$	0.39	$	1.10	$	1.00
Pro forma diluted earnings per share	n/a		$	0.39	$	1.10	$	1.00
Anti-dilutive participating securities	151,674		106,941		139,416		102,086

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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 05, 2013
Document Documentand 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
Trading Symbol	IBTX
Entity Registrant Name	Independent Bank Group, Inc.
Entity Central Index Key	0001564618
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		12,076,927

XML

Statement of Cash Flows (Tables)

9 Months Ended

Sep. 30, 2013

Supplemental Cash Flow Information [Abstract]

Other Supplemental Cash Flow Information

Other supplemental cash flow information is presented below:

	Nine months ended September 30,
	2013		2012
Cash transactions:
Interest expense paid	$	9,270	$	9,899
Income taxes paid	$	3,100	$	—
Noncash transactions:
Transfers of loans to other real estate owned	$	2,885	$	340
Loans to facilitate the sale of other real estate owned	$	113	$	20
Writeoff of debt origination costs related to warrants	$	223	$	—
Security purchased, not yet settled	$	1,000	$	—
Restricted stock vested	$	9	$	—