Independent Bank (IBTX) 10-Q 5 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	2-May-14
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
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	'	16,366,821
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$32,771	$27,408
Federal Reserve Excess Balance Account (EBA)	64,944	65,646
Cash and cash equivalents	97,715	93,054
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	204,539	194,038
Loans held for sale	2,191	3,383
Loans, net of allowance for loan losses of $14,841 and $13,960, respectively	1,878,241	1,709,200
Premises and equipment, net	74,461	72,735
Other real estate owned	2,909	3,322
Federal Home Loan Bank (FHLB) of Dallas stock and other restricted stock	9,012	9,494
Bank-owned life insurance (BOLI)	21,421	21,272
Deferred tax asset	3,937	4,834
Goodwill	42,575	34,704
Core deposit intangible, net	3,813	3,148
Other assets	12,861	14,800
Total assets	2,353,675	2,163,984
Deposits:	'	'
Noninterest-bearing	352,735	302,756
Interest-bearing	1,537,942	1,407,563
Total deposits	1,890,677	1,710,319
FHLB advances	174,462	187,484
Repurchase agreements	4,535	0
Other borrowings	4,460	4,460
Other borrowings, related parties	3,270	3,270
Junior subordinated debentures	18,147	18,147
Other liabilities	5,616	6,532
Total liabilities	2,101,167	1,930,212
Commitments and contingencies	'	'
Stockholders’ equity:	'	'
Common stock (12,592,935 and 12,330,158 shares outstanding, respectively)	126	123
Additional paid-in capital	235,225	222,116
Retained earnings	16,708	12,663
Accumulated other comprehensive income (loss)	449	-1,130
Total stockholders’ equity	252,508	233,772
Total liabilities and stockholders’ equity	$2,353,675	$2,163,984

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Amortized cost of securities available for sale	$204,761	$196,689
Allowance for loan losses	$14,841	$13,960
Common stock, shares outstanding (shares)	12,592,935	12,330,158

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Interest income:	'	'
Interest and fees on loans	$24,123	$20,759
Interest on taxable securities	699	333
Interest on nontaxable securities	257	249
Interest on federal funds sold and other	83	80
Total interest income	25,162	21,421
Interest expense:	'	'
Interest on deposits	1,907	1,728
Interest on FHLB advances	852	828
Interest on repurchase agreements, notes payable and other borrowings	135	515
Interest on junior subordinated debentures	133	135
Total interest expense	3,027	3,206
Net interest income	22,135	18,215
Provision for loan losses	1,253	1,030
Net interest income after provision for loan losses	20,882	17,185
Noninterest income:	'	'
Service charges on deposit accounts	1,211	1,139
Mortgage fee income	730	1,066
Gain on sale of other real estate	39	25
Gain on sale of premises and equipment	0	1
Increase in cash surrender value of BOLI	149	81
Other	205	114
Total noninterest income	2,334	2,426
Noninterest expense:	'	'
Salaries and employee benefits	9,134	7,748
Occupancy	2,538	2,147
Data processing	496	296
FDIC assessment	304	246
Advertising and public relations	234	216
Communications	320	340
Net other real estate owned expenses (including taxes)	79	166
Operations of IBG Adriatica, net	23	197
Other real estate impairment	0	448
Core deposit intangible amortization	199	176
Professional fees	368	272
Acquisition expense, including legal	476	137
Other	1,905	1,534
Total noninterest expense	16,076	13,923
Income before taxes	7,140	5,688
Income tax expense	2,339	0
Net income	4,801	5,688
Basic earnings per share (usd per share)	$0.38	$0.69
Diluted earnings per share (usd per share)	$0.38	$0.68
Pro Forma	'	'
Noninterest expense:	'	'
Income tax expense	'	1,866
Net income	'	3,822
Pro forma net income	'	$3,822
Basic earnings per share (usd per share)	'	$0.46
Diluted earnings per share (usd per share)	'	$0.46

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net income	$4,801	$5,688
Other comprehensive income (loss) before tax:	'	'
Change in net unrealized gains (losses) on available for sale securities during the year	2,429	-884
Reclassification adjustment for loss on sale of securities available for sale included in net income	0	0
Other comprehensive income (loss) before tax	2,429	-884
Income tax expense (benefit)	850	0
Other comprehensive income (loss), net of tax	1,579	-884
Comprehensive income	$6,380	$4,804

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock $.01 Par Value 100 million shares authorized	Additional Paid in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
In Thousands, except Share data, unless otherwise specified
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	5,688	'	'	5,688	'	'
Other comprehensive income, net of tax	-884	'	'	'	'	-884
Stock based compensation expense	182	'	182	'	'	'
Excess tax benefit on restricted stock vested	0	'	'	'	'	'
Dividends ($0.06 per share in 2014 and $0.65 per share in 2013)	-5,354	'	'	-5,354	'	'
Ending balance at Mar. 31, 2013	124,142	83	88,973	33,624	-232	1,694
Ending balance (in shares) at Mar. 31, 2013	'	8,278,354	'	'	'	'
Beginning balance at Dec. 31, 2013	233,772	123	222,116	12,663	0	-1,130
Beginning balance (in shares) at Dec. 31, 2013	'	12,330,158	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	4,801	'	'	4,801	'	'
Other comprehensive income, net of tax	1,579	'	'	'	'	1,579
Stock issued for acquisition of bank (in shares)	'	235,594	'	'	'	'
Stock issued for acquisition of bank	11,700	3	11,697	'	'	'
Restricted stock granted (shares)	'	27,183	'	'	'	'
Restricted stock granted	'	0	0	'	'	'
Stock based compensation expense	390	'	390	'	'	'
Excess tax benefit on restricted stock vested	1,022	'	1,022	'	0	'
Dividends ($0.06 per share in 2014 and $0.65 per share in 2013)	-756	'	'	-756	'	'
Ending balance at Mar. 31, 2014	$252,508	$126	$235,225	$16,708	$0	$449
Ending balance (in shares) at Mar. 31, 2014	'	12,592,935	'	'	'	'

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Stockholders' Equity [Abstract]	'	'
Dividends paid (usd per share)	$0.06	$0.65
Common stock shares authorized	100,000,000	100,000,000

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$4,801	$5,688
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation expense	1,145	949
Amortization of core deposit intangibles	199	176
Amortization (accretion) of premium (discount) on securities, net	394	-1
Stock based compensation expense	390	182
FHLB stock dividends	-9	-5
Net loss (gain) on sale of premises and equipment	0	-1
Gain recognized on other real estate transactions	-39	-25
Impairment of other real estate	0	448
Deferred tax expense	173	0
Provision for loan losses	1,253	1,030
Increase in cash surrender value of life insurance	-149	-81
Loans originated for sale	-28,070	-47,740
Proceeds from sale of loans	29,262	50,812
Net change in other assets	1,012	-644
Net change in other liabilities	-3,326	-1,355
Net cash provided by operating activities	7,036	9,433
Cash flows from investing activities:	'	'
Proceeds from maturities and pay downs of securities available for sale	20,941	6,137
Purchases of securities available for sale	-8,667	-8,205
Proceeds from maturities of certificates held in other banks	0	3,038
Net purchases of FHLB stock	491	0
Net loans originated	-99,556	-49,419
Additions to premises and equipment	-282	-3,279
Proceeds from sale of premises and equipment	11	9
Proceeds from sale of other real estate owned	552	496
Capitalized additions to other real estate	-28	-55
Cash received from acquired bank	32,246	0
Cash paid in connection with acquisition	-10,000	0
Net cash used in investing activities	-64,292	-51,278
Cash flows from financing activities:	'	'
Net increase in demand deposits, NOW and savings accounts	26,181	8,975
Net increase in time deposits	48,712	15,384
Net change in FHLB advances	-13,022	-49
Net change in repurchase agreements	802	0
Repayments of notes payable and other borrowings	0	-835
Dividends paid	-756	-3,030
Net cash provided by financing activities	61,917	20,445
Net change in cash and cash equivalents	4,661	-21,400
Cash and cash equivalents at beginning of year	93,054	102,290
Cash and cash equivalents at end of year	$97,715	$80,890

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
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 Annual Report of Form10-K for the year ended December 31, 2013. The consolidated statement of condition at December 31, 2013 had 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.
	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 three months ended March 31, 2013, as if it had been a C Corporation during that period. 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.
	Reclassifications: Certain prior period accounts have been reclassified to conform with current year presentation.
	Subsequent events: Companies are required to evaluate events and transactions that occur after the balance sheet date but before the date the financial statements are issued. They must recognize in the financial statements the effect of all events or transactions that provide additional evidence of conditions that existed at the balance sheet date, including the estimates inherent in the financial statement preparation process. Entities shall not recognize the impact of events or transactions that provide evidence about conditions that did not exist at the balance sheet date but arose after that date. 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, except as disclosed in Note 12.
	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 March 31,
		2014		2013
	Basic earnings per share:
	Net income	$	4,801	$	5,688
	Less:
	Undistributed earnings allocated to participating securities	58		6
	Dividends paid on participating securities	11		93
	Net income available to common shareholders	$	4,732	$	5,589
	Weighted-average basic shares outstanding	12,403,387		8,125,279
	Basic earnings per share	$	0.38	$	0.69
	Diluted earnings per share:
	Net income available to common shareholders	$	4,732	$	5,589
	Total weighted-average basic shares outstanding	12,403,387		8,125,279
	Add dilutive stock warrants	101,643		42,447
	Total weighted-average diluted shares outstanding	12,505,030		8,167,726
	Diluted earnings per share	$	0.38	$	0.68
	Pro forma earnings per share:
	Pro forma net income	n/a		$	3,822
	Less undistributed earnings allocated to participating securities	n/a		(27		)
	Less dividends paid on participating securities	n/a		93
	Pro forma net income available to common shareholders after tax	n/a		$	3,756
	Pro forma basic earnings per share	n/a		$	0.46
	Pro forma diluted earnings per share	n/a		$	0.46
	Anti-dilutive participating securities	109,040		118,572

Statement_of_Cash_Flows

Statement of Cash Flows	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Statement of Cash Flows	'
	Statement of Cash Flows
	As allowed by the accounting standards, 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:
		Three Month Ended March 31,
		2014			2013
	Cash transactions:
	Interest expense paid	$	3,045		$	3,250
	Income taxes paid	$	2,700		$	—
	Noncash transactions:
	Dividends declared, not yet paid	$	—		$	2,324
	Transfers of loans to other real estate owned	$	120		$	2,503
	Loans to facilitate the sale of other real estate owned	$	48		$	—
	Security purchased, not yet settled	$	2,000		$	—
	Excess tax benefit on restricted stock vested	$	1,022		$	—
	Supplemental schedule of noncash investing activities from the Live Oak Financial Corp. acquisition is as follows:
		Three Months Ended March 31,
		2014			2013
	Noncash assets acquired
	Cash and cash equivalents	$	32,246		$	—
	Securities available for sale	16,740			—
	Loans	71,138			—
	Premises and equipment	2,600			—
	Goodwill	7,122			—
	Core deposit intangibles	882			—
	Other assets	230			—
	Total assets	$	130,958		$	—
	Noncash liabilities assumed:
	Deposits	$	104,960		$	—
	Repurchase agreements	3,733			—
	Other liabilities	565			—
	Total liabilities	$	109,258		$	—
	Cash paid to shareholders of acquired bank	$	10,000		$	—
	Fair value of common stock issued to shareholders of acquired bank	$	11,700		$	—
	In addition, the following measurement-period adjustments were made during the period relating the November 30, 2013 acquisition of Collin Bank:
		Three Months Ended March 31,
		2014			2013
	Noncash assets acquired:
	Loans	$	(328	)	$	—
	Goodwill	749			—
	Core deposit intangibles	(18		)	—
	Deferred tax asset	109			—
	Other assets	10			—
	Total assets	$	522		$	—
	Noncash liabilities assumed:
	Deposits	$	505		$	—
	Other liabilities	17			—
	Total liabilities	$	522		$	—

Securities_Available_for_Sale

Securities Available for Sale	3 Months Ended
	Mar. 31, 2014
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 March 31, 2014 and December 31, 2013, are as follows:
		Amortized				Gross				Gross			Fair
		Cost				Unrealized				Unrealized			Value
						Gains				Losses
	Securities Available for Sale
	March 31, 2014:
	U.S. treasuries	$	999			$	9			$	—		$	1,008
	Government agency securities	90,761				134				(657		)	90,238
	Obligations of state and municipal subdivisions	37,545				959				(1,050		)	37,454
	Corporate bonds	2,076				—				(4		)	2,072
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,380				419				(32		)	73,767
		$	204,761			$	1,521			$	(1,743	)	$	204,539
	December 31, 2013:
	U.S. treasuries	$	3,498			$	15			$	—		$	3,513
	Government agency securities	95,407				84				(1,076		)	94,415
	Obligations of state and municipal subdivisions	37,861				541				(1,787		)	36,615
	Corporate bonds	2,079				—				(27		)	2,052
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	57,844				67				(468		)	57,443
		$	196,689			$	707			$	(3,358	)	$	194,038
	Securities with a carrying amount of approximately $165,746 and $111,673 at March 31, 2014 and December 31, 2013, respectively, were pledged to secure public fund deposits and repurchase agreements.
	There were no sales of securities during the three months ended March 31, 2014 and 2013.
	The amortized cost and estimated fair value of securities available for sale at March 31, 2014, 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.
		March 31, 2014
		Securities Available for Sale
		Amortized				Fair
		Cost				Value
	Due in one year or less	$	2,595			$	2,600
	Due from one year to five years	63,732				63,247
	Due from five to ten years	32,623				32,697
	Thereafter	32,431				32,228
		131,381				130,772
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,380				73,767
		$	204,761			$	204,539
	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 March 31, 2014 and December 31, 2013, are summarized as follows:
		Less Than 12 Months										Greater Than 12 Months						Total
	Description of Securities	Number of Securities		Estimated				Unrealized				Number of Securities	Estimated		Unrealized			Estimated		Unrealized
				Fair Value				Losses					Fair Value		Losses			Fair Value		Losses
	Securities Available for Sale
	March 31, 2014
	Government agency securities	34		$	51,181			$	(657	)		—	$	—	$	—		$	51,181	$	(657	)
	Obligations of state and municipal subdivisions	12		7,211				(289		)		13	7,975		(761		)	15,186		(1,050		)
	Corporate bonds	1		1,073				(4		)		—	—		—			1,073		(4		)
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	7		13,741				(32		)		—	—		—			13,741		(32		)
		54		$	73,206			$	(982	)		13	$	7,975	$	(761	)	$	81,181	$	(1,743	)
	December 31, 2013
	Government agency securities	46		$	74,331			$	(1,076	)		—	$	—	$	—		$	74,331	$	(1,076	)
	Obligations of state and municipal subdivisions	21		11,888				(1,139		)		6	4,047		(648		)	15,935		(1,787		)
	Corporate bonds	2		2,052				(27		)		—	—		—			2,052		(27		)
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	14		49,126				(468		)		—	—		—			49,126		(468		)
		83		$	137,397			$	(2,710	)		6	$	4,047	$	(648	)	$	141,444	$	(3,358	)
	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.

Loans_Net_and_Allowance_for_Lo

Loans, Net and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Loans, Net and Allowance for Loan Losses	'
	Loans, Net and Allowance for Loan Losses
	Loans, net at March 31, 2014 and December 31, 2013, consisted of the following:
			March 31,				December 31,
			2014				2013
	Commercial		$	270,608			$	241,178
	Real estate:
	Commercial		927,408				843,436
	Commercial construction, land and land development		153,734				130,320
	Residential		360,152				338,654
	Single family interim construction		93,587				83,144
	Agricultural		41,642				40,558
	Consumer		45,906				45,762
	Other		45				108
			1,893,082				1,723,160
	Allowance for loan losses		(14,841		)		(13,960		)
			$	1,878,241			$	1,709,200
	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 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 March 31, 2014 and December 31, 2013, 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 in which the customer operates, 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 $1.5 million. 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. The following is a summary of the activity in the allowance for loan losses by loan class for the three months ended March 31, 2014 and 2013:
		Commercial			Commercial			Residential			Single-Family			Agricultural			Consumer			Other		Unallocated			Total
					Real Estate,			Real Estate			Interim
					Land and Land						Construction
					Development
	Three months ended March 31, 2014
	Balance at the beginning of period	$	2,401		$	7,872		$	2,440		$	577		$	238		$	363		$	—	$	69		$	13,960
	Provision for loan losses	578			256			(163		)	(42		)	6			(6		)	—		624			1,253
	Charge-offs	(363		)	(21		)	(1		)	—			—			(14		)	—		—			(399		)
	Recoveries	4			10			2			1			—			10			—		—			27
	Balance at end of period	$	2,620		$	8,117		$	2,278		$	536		$	244		$	353		$	—	$	693		$	14,841
	Three months ended March 31, 2013
	Balance at the beginning of period	$	2,377		$	4,924		$	2,965		$	523		$	159		$	278		$	—	$	252		$	11,478
	Provision for loan losses	(280		)	2,082			(548		)	(158		)	73			59			—		(198		)	1,030
	Charge-offs	—			(531		)	—			—			—			(12		)	—		—			(543		)
	Recoveries	4			3			3			—			—			9			—		—			19
	Balance at end of period	$	2,101		$	6,478		$	2,420		$	365		$	232		$	334		$	—	$	54		$	11,984
	The following table details the amount of the allowance for loan losses and recorded investment in loans by class as of March 31, 2014 and December 31, 2013:
		Commercial			Commercial			Residential			Single-Family			Agricultural			Consumer			Other		Unallocated			Total
					Real Estate,			Real Estate			Interim
					Land and Land						Construction
					Development
	31-Mar-14
	Allowance for losses:
	Individually evaluated for impairment	$	53		$	272		$	40		$	—		$	—		$	21		$	—	$	—		$	386
	Collectively evaluated for impairment	2,567			7,845			2,238			536			244			332			—		693			14,455
	Loans acquired with deteriorated credit quality	—			—			—			—			—			—			—		—			—
	Ending balance	$	2,620		$	8,117		$	2,278		$	536		$	244		$	353		$	—	$	693		$	14,841
	Loans:
	Individually evaluated for impairment	$	251		$	7,562		$	3,232		$	—		$	—		$	57		$	—	$	—		$	11,102
	Collectively evaluated for impairment	264,548			1,067,232			354,870			93,587			41,642			45,840			45		—			1,867,764
	Acquired with deteriorated credit quality	5,809			6,348			2,050			—			—			9			—		—			14,216
Ending balance	$	270,608		$	1,081,142		$	360,152		$	93,587		$	41,642		$	45,906		$	45	$	—		$	1,893,082
31-Dec-13
Allowance for losses:
Individually evaluated for impairment	$	313		$	504		$	14		$	—		$	—		$	24		$	—	$	—		$	855
Collectively evaluated for impairment	2,088			7,368			2,426			577			238			339			—		69			13,105
Loans acquired with deteriorated credit quality	—			—			—			—			—			—			—		—			—
Ending balance	$	2,401		$	7,872		$	2,440		$	577		$	238		$	363		$	—	$	69		$	13,960
Loans:
Individually evaluated for impairment	$	501		$	8,013		$	3,182		$	170		$	—		$	68		$	—	$	—		$	11,934
Collectively evaluated for impairment	234,103			959,254			334,770			82,974			40,558			45,682			108		—			1,697,449
Acquired with deteriorated credit quality	6,574			6,489			702			—			—			12			—		—			13,777
Ending balance	$	241,178		$	973,756		$	338,654		$	83,144		$	40,558		$	45,762		$	108	$	—		$	1,723,160
Nonperforming loans by loan class at March 31, 2014 and December 31, 2013, are summarized as follows:
		Commercial				Commercial				Residential Real Estate				Single-Family				Agricultural			Consumer				Other		Total
						Real Estate,								Interim
						Land and Land								Construction
						Development
31-Mar-14
Nonaccrual loans		$	52			$	99			$	1,918			$	—			$	—		$	35			$	—	$	2,104
Loans past due 90 days and still accruing		600				—				—				—				—			—				—		600
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)		99				5,031				1,273				—				—			—				—		6,403
		$	751			$	5,130			$	3,191			$	—			$	—		$	35			$	—	$	9,107
31-Dec-13
Nonaccrual loans		$	357			$	253			$	1,852			$	170			$	—		$	43			$	—	$	2,675
Loans past due 90 days and still accruing		—				—				—				—				—			—				—		—
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)		107				3,571				425				—				—			1				—		4,104
		$	464			$	3,824			$	2,277			$	170			$	—		$	44			$	—	$	6,779
The accrual of interest is discontinued on a loan when management believes after considering collection efforts and other factors that the borrower's financial condition is such that collection of interest is doubtful. All interest accrued but not collected for loans that are placed on nonaccrual status or charged-off is reversed against interest income. Cash collections on nonaccrual loans are generally credited to the loan receivable balance, and no interest income is recognized on those loans until the principal balance has been collected. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
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 loan's 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 the other methods to determine the level of impairment of a loan if such loan is not collateral dependent.
All commercial, real estate, agricultural loans and troubled debt restructurings are considered for individual impairment analysis. Smaller balance consumer loans are collectively evaluated for impairment.
Impaired loans by loan class at March 31, 2014 and December 31, 2013, are summarized as follows:
		Commercial				Commercial				Residential				Single-Family				Agricultural			Consumer				Other		Total
						Real Estate,				Real Estate				Interim
						Land and Land								Construction
						Development
31-Mar-14
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses		$	93			$	2,362			$	102			$	—			$	—		$	33			$	—	$	2,590
Impaired loans with no allowance for loan losses		158				5,200				3,130				—				—			24				—		8,512
Total		$	251			$	7,562			$	3,232			$	—			$	—		$	57			$	—	$	11,102
Unpaid principal balance of impaired loans		$	252			$	8,591			$	3,270			$	—			$	—		$	65			$	—	$	12,178
Allowance for loan losses on impaired loans		$	53			$	272			$	40			$	—			$	—		$	21			$	—	$	386
31-Dec-13
Recorded investment in impaired loans:
Impaired loans with an allowance for loan losses		$	401			$	3,866			$	1,135			$	—			$	—		$	40			$	—	$	5,442
Impaired loans with no allowance for loan losses		100				4,147				2,047				170				—			28				—		6,492
Total		$	501			$	8,013			$	3,182			$	170			$	—		$	68			$	—	$	11,934
Unpaid principal balance of impaired loans		$	501			$	8,408			$	3,216			$	170			$	—		$	75			$	—	$	12,370
Allowance for loan losses on impaired loans		$	313			$	504			$	14			$	—			$	—		$	24			$	—	$	855
For the three months ended March 31, 2014
Average recorded investment in impaired loans		$	376			$	7,788			$	3,207			$	85			$	—		$	63			$	—	$	11,519
Interest income recognized on impaired loans		$	3			$	107			$	28			$	—			$	—		$	—			$	—	$	138
For the three months ended March 31, 2013
Average recorded investment in impaired loans		$	774			$	9,572			$	3,476			$	—			$	—		$	93			$	—	$	13,915
Interest income recognized on impaired loans		$	9			$	106			$	46			$	—			$	—		$	2			$	—	$	163
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 $7,827 and $7,938 as of March 31, 2014 and December 31, 2013.
Following is a summary of loans modified under troubled debt restructurings during the three months ended March 31, 2014 and 2013:
.
		Commercial				Commercial				Residential				Single-Family				Agricultural			Consumer				Other		Total
						Real Estate,				Real Estate				Interim
						Land and Land								Construction
						Development
Troubled debt restructurings during the three months ended March 31, 2014
Number of contracts		—				1				—				—				—			—				—		1
Pre-restructuring outstanding recorded investment		$	—			$	700			$	—			$	—			$	—		$	—			$	—	$	700
Post-restructuring outstanding recorded investment		$	—			$	700			$	—			$	—			$	—		$	—			$	—	$	700
Troubled debt restructurings during the three months ended March 31, 2013
Number of contracts		—				—				—				—				—			—				—		—
Pre-restructuring outstanding recorded investment		$	—			$	—			$	—			$	—			$	—		$	—			$	—	$	—
Post-restructuring outstanding recorded investment		$	—			$	—			$	—			$	—			$	—		$	—			$	—	$	—
At March 31, 2014 and 2013, there were no loans modified under troubled debt restructurings during the previous twelve month period that subsequently defaulted during the three months ended March 31, 2014 and, 2013, respectively. At March, 31, 2014 and 2013, the Company had no commitments to lend additional funds to any borrowers with loans whose terms have been modified under troubled debt restructurings.
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 losses.
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 March 31, 2014 and December 31, 2013:
		Loans				Loans				Total Past				Current				Total
		30-89 Days				90 or More				Due Loans				Loans				Loans
		Past Due				Past Due
31-Mar-14
Commercial		$	455			$	600			$	1,055			$	269,553			$	270,608
Commercial real estate, land and land  development		357				—				357				1,080,785				1,081,142
Residential real estate		878				281				1,159				358,993				360,152
Single-family interim construction		—				—				—				93,587				93,587
Agricultural		119				—				119				41,523				41,642
Consumer		122				—				122				45,784				45,906
Other		—				—				—				45				45
		$	1,931			$	881			$	2,812			$	1,890,270			$	1,893,082
31-Dec-13
Commercial		$	257			$	357			$	614			$	240,564			$	241,178
Commercial real estate, land and land  development		2,076				73				2,149				971,607				973,756
Residential real estate		1,322				1,603				2,925				335,729				338,654
Single-family interim construction		—				170				170				82,974				83,144
Agricultural		3				—				3				40,555				40,558
Consumer		97				1				98				45,664				45,762
Other		—				—				—				108				108
		$	3,755			$	2,204			$	5,959			$	1,717,201			$	1,723,160
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 that 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 by officers and senior management 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 March 31, 2014 and December 31, 2013, is as follows:
		Pass				Pass/				OAEM				Substandard				Doubtful			Total
		(Rating 1-4)				Watch
March 31, 2014
Commercial		$	259,802			$	9,367			$	1,099			$	340			$	—		$	270,608
Commercial real estate, construction, land  and land development		1,061,991				8,907				5,359				4,885				—			1,081,142
Residential real estate		349,393				6,404				296				4,059				—			360,152
Single-family interim construction		93,587				—				—				—				—			93,587
Agricultural		41,418				207				—				17				—			41,642
Consumer		45,766				60				14				66				—			45,906
Other		45				—				—				—				—			45
		$	1,852,002			$	24,945			$	6,768			$	9,367			$	—		$	1,893,082
31-Dec-13
Commercial		$	231,080			$	7,199			$	1,311			$	1,453			$	135		$	241,178
Commercial real estate, construction, land  and land development		952,863				10,697				2,982				7,214				—			973,756
Residential real estate		328,918				5,379				454				3,903				—			338,654
Single-family interim construction		83,144				—				—				—				—			83,144
Agricultural		40,328				210				—				20				—			40,558
Consumer		45,556				82				39				85				—			45,762
Other		108				—				—				—				—			108
		$	1,681,997			$	23,567			$	4,786			$	12,675			$	135		$	1,723,160
The Company has 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. There are no PCI loans outstanding for acquisitions prior to 2012.
The following table summarizes the outstanding balance and related carrying amount of purchased credit impaired loans by acquired bank as of the respective acquisition date for the acquisitions occurring in 2014 and 2013:
		Acquisition Date
		1-Jan-14				30-Nov-13
		Live Oak				Collin Bank
Outstanding balance		$	3,583			$	11,897
Nonaccretable difference		(519		)		(1,810		)
Accretable yield		(182		)		(408		)
Carrying amount		$	2,882			$	9,679
The carrying amount of all acquired PCI loans included in the consolidated balance sheet and the related outstanding balance at March 31, 2014 and December 31, 2013, were as follows:
	March 31,				December 31,
	2014				2013
Outstanding balance	$	17,783			$	15,768
Carrying amount	14,216				13,777
At March 31, 2014 and December 31, 2013, there was no allocation established in the allowance for loan losses related to purchased credit impaired loans.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
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 March 31, 2014 and December 31, 2013, the approximate amounts of these financial instruments were as follows:
		March 31,		December 31,
		2014		2013
	Commitments to extend credit	$	362,808	$	365,575
	Standby letters of credit	2,283		2,120
		$	365,091	$	367,695
	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 March 31, 2014 and December 31, 2013, 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 $198 and $209 for the three months ended March 31, 2014, and 2013, respectively.

Repurchase_Agreements_and_Othe

Repurchase Agreements and Other Borrowings	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Repurchase Agreements and Other Borrowings	'
	Repurchase Agreements and Other Borrowings
	The Company assumed repurchase agreement accounts in the Live Oak acquisition on January 1, 2014. At March 31, 2014 and December 31, 2013, repurchase accounts totaled $4,535 and $0, respectively. Securities held in safekeeping totaling $5,480 are pledged as security on these repurchase agreement accounts.
	Other borrowings, including those borrowings due to related parties totaled $7,730 at March 31, 2014 and December 31, 2013.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	In connection with the initial public offering, the Company terminated its S-Corporation status and became a taxable entity (C Corporation) on April 1, 2013. As such, the three months ended March 31, 2013 does not reflect income tax expense.
	Income tax expense for the three months ended March 31, 2014 was as follows:
		Three Months Ended March 31, 2014
	Income tax expense for the period	$	2,339
	Effective tax rate	32.8		%
	The effective tax rates differ from the statutory federal tax rate of 35% largely due to tax exempt interest income earned on certain investment securities and loans and the nontaxable earnings on bank owned life insurance.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
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 reported on the consolidated balance sheets at their fair value on a recurring basis as of March 31, 2014 and December 31, 2013 by level within the ASC Topic 820 fair value measurement hierarchy:
				Fair Value Measurements at Reporting Date Using
		Assets/		Quoted Prices		Significant		Significant
		Liabilities		in Active		Other		Unobservable
		Measured at		Markets for		Observable		Inputs
		Fair Value		Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	March 31, 2014
	Measured on a recurring basis:
	Assets:
	Investment securities available for sale:
	U.S. treasuries	$	1,008	$	—	$	1,008	$	—
	Government agency securities	90,238		—		90,238		—
	Obligations of state and municipal subdivisions	37,454		—		37,454		—
	Corporate bonds	2,072		—		2,072		—
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,767		—		73,767		—
	31-Dec-13
	Measured on a recurring basis:
	Assets:
	Investment securities available for sale:
	U.S. treasuries	$	3,513	$	—	$	3,513	$	—
	Government agency securities	94,415		—		94,415		—
	Obligations of state and municipal subdivisions	36,615		—		36,615		—
	Corporate bonds	2,052		—		2,052		—
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	57,443		—		57,443		—
	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, was reported at fair value using Level 3 inputs. The contingent consideration was 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. The following table presents the activity in the contingent consideration for the three months ended March 31, 2013:
		Three months ended March 31,
		2013
	Balance, beginning of period	$	290
	Settlements	—
	Change in estimated payments to be made	—
	Balance, end of period	$	290
	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 March 31, 2014 and December 31, 2013, for which a nonrecurring change in fair value has been recorded:
				Fair Value Measurements at Reporting Date Using
		Assets		Quoted Prices		Significant		Significant		Period Ended
		Measured		in Active		Other		Unobservable		Total Losses
		at Fair Value		Markets for		Observable		Inputs (Level 3)
				Identical Assets		Inputs
				(Level 1)		(Level 2)
	31-Mar-14
	Measured on a nonrecurring basis:
	Assets:
	Impaired loans	$	1,781	$	—	$	—	$	1,781	$	78
	Other real estate	—		—		—		—		$	—
	31-Dec-13
	Measured on a nonrecurring basis:
	Assets:
	Impaired loans	$	1,514	$	—	$	—	$	1,514	$	497
	Other real estate	2,449		—		—		2,449		537
	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.
	In addition, mortgage loans held for sale are required to be measured at the lower of cost or fair value. The fair value of mortgage loans held for sale is based upon binding quotes or bids from third party investors. As of March 31, 2014 and December 31, 2013, all mortgage loans held for sale were recorded at cost.
	There were no transfers into or out of Level 3 categorization for the periods presented.
	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.
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.
Repurchase agreements 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.
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 March 31, 2014 and December 31, 2013:
					Fair Value Measurements at Reporting Date Using
	Carrying		Estimated		Quoted Prices		Significant		Significant
	Amount		Fair Value		in Active		Other		Unobservable
					Markets for		Observable		Inputs
					Identical Assets		Inputs		(Level 3)
					(Level 1)		(Level 2)
31-Mar-14
Financial assets:
Cash and cash equivalents	$	97,715	$	97,715	$	97,715	$	—	$	—
Securities available for sale	204,539		204,539		—		204,539		—
Loans held for sale	2,191		2,191		—		2,191		—
Loans, net	1,878,241		1,878,368		—		1,876,164		2,204
FHLB of Dallas stock and other restricted stock	9,012		9,012		—		9,012		—
Accrued interest receivable	5,355		5,355		—		5,355		—
Financial liabilities:
Deposits	1,890,677		1,892,774		—		1,892,774		—
Accrued interest payable	930		930		—		930		—
FHLB advances	174,462		177,857		—		177,857		—
Repurchase agreements	4,535		4,535		—		4,535		—
Other borrowings	7,730		7,927		—		7,927		—
Junior subordinated debentures	18,147		18,123		—		18,123		—
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—
31-Dec-13
Financial assets:
Cash and cash equivalents	$	93,054	$	93,054	$	93,054	$	—	$	—
Certificates of deposit held in other banks	—		—		—		—		—
Securities available for sale	194,038		194,038		—		194,038		—
Loans held for sale	3,383		3,383		—		3,383		—
Loans, net	1,709,200		1,714,815		—		1,710,228		4,587
FHLB of Dallas stock and other restricted stock	9,494		9,494		—		9,494		—
Accrued interest receivable	4,713		4,713		—		4,713		—
Financial liabilities:
Deposits	1,710,319		1,712,654		—		1,712,654		—
Accrued interest payable	948		948		—		948		—
FHLB advances	187,484		189,092		—		189,092		—
Notes payable	—		—		—		—		—
Other borrowings	7,730		8,061		—		8,061		—
Junior subordinated debentures	18,147		18,099		—		18,099		—
Contingent consideration	—		—		—		—		—
Off-balance sheet assets (liabilities):
Commitments to extend credit	—		—		—		—		—
Standby letters of credit	—		—		—		—		—

Stock_Awards_and_Stock_Warrant

Stock Awards and Stock Warrants	3 Months Ended
	Mar. 31, 2014
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. Under this plan, the Compensation Committee may grant awards in the form of restricted stock, restricted stock rights, restricted stock units, qualified and nonqualified stock options, performance-based share awards and other equity-based awards. The Plan reserved 800,000 shares of common stock to be awarded by the Company’s compensation committee. The shares currently issued under the 2013 Plan are restricted and will vest evenly over the required employment period, ranging from three to five years. Shares granted under a previous plan prior to 2012 and those in and subsequent to 2013 under the 2013 Equity Incentive Plan 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 years ended March 31, 2014 and 2013:
		Number of		Weighted
		Shares		Average
				Grant Date
				Fair Value
	Nonvested shares, December 31, 2013	306,524		$	22.75
	Granted during the period	27,183		50.8
	Vested during the period	(92,000	)	17.92
	Nonvested shares, March 31, 2014	241,707		$	27.75
	Nonvested shares, December 31, 2012	208,608		$	17.07
	Granted during the period	—		—
	Vested during the period	(16,317	)	11.94
	Nonvested shares, March 31, 2013	192,291		$	18.05
	Compensation expense related to these awards is recorded based on the fair value of the award at the date of grant and totaled $390 and $182 for the three months ended March 31, 2014 and 2013, respectively. Compensation expense is recorded in salaries and employee benefits in the accompanying consolidated statements of income. At March 31, 2014, future compensation expense is estimated to be $4,981 and will be recognized over a remaining weighted average period of 3.17 years.
	The fair value of common stock awards that vested during the three months ended March 31, 2014 and 2013 was $4,869 and $357, respectively. The Company has recorded $1,022 and $0 to additional paid in capital, which represents the excess tax benefit recognized on the vested shares for the three months ended March 31, 2014 and 2013, respectively.
	At March 31, 2014, the future vesting schedule of the nonvested shares is as follows:
	First year	56,730
	Second year	42,050
	Third year	59,439
	Fourth year	60,704
	Fifth year	22,784
	Total nonvested shares	241,707
	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 as equity 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.

Regulatory_Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2014
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 March 31, 2014 and December 31, 2013, the Company and the Bank meet all capital adequacy requirements to which they are subject.
	As of March 31, 2014 and December 31, 2013, 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 March 31, 2014 and December 31, 2013, are presented in the following table:
		Actual				Minimum for Capital				To Be Well
						Adequacy Purposes				Capitalized Under
										Prompt Corrective
										Action Provisions
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	March 31, 2014
	Total capital to risk weighted assets:
	Consolidated	$	244,296	13.08	%	$	149,384	8	%	N/A		N/A
	Bank	230,602		12.37		149,174		8		$	186,467	10	%
	Tier I capital to risk weighted assets:
	Consolidated	223,271		11.96		74,692		4		N/A		N/A
	Bank	215,761		11.57		74,587		4		111,880		6	%
	Tier I capital to average assets:
	Consolidated	223,271		9.77		91,382		4		N/A		N/A
	Bank	215,761		9.52		90,649		4		113,311		5	%
	31-Dec-13
	Total capital to risk weighted assets:
	Consolidated	$	234,794	13.83	%	$	135,801	8	%	N/A		N/A
	Bank	212,656		12.54		135,648		8		$	169,560	10	%
	Tier I capital to risk weighted assets:
	Consolidated	214,650		12.64		67,901		4		N/A		N/A
	Bank	198,696		11.72		67,824		4		101,736		6	%
	Tier I capital to average assets:
	Consolidated	214,650		10.71		80,204		4		N/A		N/A
	Bank	198,696		9.97		79,710		4		99,637		5	%

Business_Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	Collin Bank
	During the three months ended March 31, 2014, the Company made certain measurement-period adjustments to previous purchase accounting estimates for the November 30, 2013 acquisition of Collin Bank. The differences from estimated values resulted from completion of the valuations. The following table summarizes the previously reported estimates and the measurement-period adjustments made to asset and liability accounts to derive at the final purchase accounting allocations for Collin Bank.
		As Reported at December 31, 2013		Measurement Period Adjustments			Final Recorded Value
	Assets of acquired bank:
	Cash and cash equivalents	$	22,792	$	—		$	22,792
	Securities available for sale	62,373		—			62,373
	Loans	72,611		(328		)	72,283
	Premises and equipment	141		—			141
	Investment in FHLB stock	1,156		—			1,156
	Goodwill	5,962		749			6,711
	Core deposit intangible	600		(18		)	582
	Deferred tax asset	1,385		109			1,494
	Other assets	775		10			785
	Total assets	$	167,795	$	522		$	168,317
	Liabilities of acquired bank:
	Deposits	$	111,164	$	505		$	111,669
	FHLB advances	26,000		—			26,000
	Other liabilities	358		17			375
	Total liabilities	$	137,522	$	522		$	138,044
	Common stock issued in the Collin Bank transaction	$	11,861	$	—		$	11,861
	Cash paid in the Collin Bank transaction	$	18,412	$	—		$	18,412
	Live Oak Financial Corp.
	On January 1, 2014, the Company acquired 100% of the outstanding stock of Live Oak Financial Corp. and its wholly owned subsidiary, Live Oak State Bank, Dallas, TX (Live Oak) with one branch located east of downtown Dallas. The Company issued 235,594 shares of Company stock and paid $10.0 million in cash for the outstanding shares of Live Oak common stock.
	The Company recognized goodwill of $7,122, which is calculated as the excess of both the consideration exchanged and liabilities assumed compared to the fair market value of identifiable assets acquired. The goodwill in this acquisition resulted from a combination of expected synergies and a desirable branch location. None of the goodwill recognized is expected to be deductible for income tax purposes.
	The Company has incurred expenses related to the acquisition of approximately $54 during the three months ended March 31, 2014, which is included in acquisition expenses in the consolidated statements of income. The acquisition is not considered significant to the Company’s financial statements and therefore, pro forma financial data is not included.
	Non-credit impaired loans had a fair value of $68,256 at the date of acquisition and contractual balances of $68,351. The difference of $95 will be recognized into interest income as an adjustment to yield over the life of the loans.
	Fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	32,246
	Securities available for sale	16,740
	Loans	71,138
	Premises and equipment	2,600
	Goodwill	7,122
	Core deposit intangible	882
	Other assets	230
	Total assets	$	130,958
	Liabilities of acquired bank:
	Deposits	$	104,960
	Repurchase agreements	3,733
	Other liabilities	565
	Total liabilities	$	109,258
	Common stock issued in the Live Oak transaction	$	11,700
	Cash paid in the Live Oak transaction	$	10,000

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	BOH Holdings
	On April 15, 2014, the Company acquired 100% of the outstanding stock of BOH Holdings, Inc. and its subsidiary, Bank of Houston (BOH), Houston, Texas. This transaction gives the Company six branches in the greater Houston area. The Company issued 3,615,886 shares of Company stock and paid $33,998 in cash for the outstanding shares of BOH common stock. In addition, the Company issued 23,938.35 shares of Senior Non-Cumulative Perpetual Preferred Stock, Series A to the US Treasury Department in exchange for the 23,938.35 shares of BOH Series C Preferred Stock. The preferred stock is senior to the Company's common stock with respect to dividend rights and liquidation.
	The Company has recognized a provisional amount of goodwill of approximately $166 million which is calculated as the excess of both the consideration exchanged and liabilities assumed compared to the fair market value of identifiable assets acquired. The goodwill in this acquisition resulted from a combination of expected synergies and entrance into a desirable Texas market. None of the goodwill recognized is expected to be deductible for income tax purposes.
	The Company has incurred expenses related to the acquisition of approximately $205 for the three months ended March 31, 2014, which is included in acquisition expenses in the consolidated statements of income. The Company incurred expenses of $592 during the year ended December 31, 2013. Provisional estimates for loans, goodwill, core deposit intangible and deposits have been recorded for the acquisition as final valuations are not yet available. The Company does not not expect any significant differences from estimated values upon completion of the valuations.
	Estimated fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	135,525
	Securities available for sale	58,978
	Loans	786,160
	Premises and equipment	7,464
	Goodwill	165,885
	Core deposit intangible	6,610
	Other assets	28,118
	Total assets acquired	$	1,188,740
	Liabilities of acquired bank:
	Deposits	$	820,752
	FHLB Advances	95,000
	Other liabilities	6,235
	Total liabilities assumed	$	921,987
	Common stock issued at $57.75 per share	$	208,817
	Series A Preferred Stock Exchanged	$	23,938
	Cash paid	$	33,998
	Pro forma net income for the three months ended March 31, 2014 and 2013 was $7,244 and $6,257, respectively and pro forma revenue was $38,007 and $33,637, respectively had the transaction occurred as of January 1, 2014. Pro forma after tax net income for the year ended December 31, 2013 was $26,959 and pro forma revenue was $139,164 had the transaction occurred on January 1, 2013.
	Declaration of Dividends
	On May 5, 2014, the Company declared a quarterly cash dividend in the amount of $0.06 per share of common stock to the stockholders of record on May 15, 2014. The dividend will be paid on May 28, 2014.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
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 Annual Report of Form10-K for the year ended December 31, 2013. The consolidated statement of condition at December 31, 2013 had 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.
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 three months ended March 31, 2013, as if it had been a C Corporation during that period. 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.
Reclassifications	'
	Reclassifications: Certain prior period accounts have been reclassified to conform with current year presentation.
Subsequent Events	'
	Subsequent events: Companies are required to evaluate events and transactions that occur after the balance sheet date but before the date the financial statements are issued. They must recognize in the financial statements the effect of all events or transactions that provide additional evidence of conditions that existed at the balance sheet date, including the estimates inherent in the financial statement preparation process. Entities shall not recognize the impact of events or transactions that provide evidence about conditions that did not exist at the balance sheet date but arose after that date. 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, except as disclosed in Note 12.
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.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Earning Per Share	'
		Three Months Ended March 31,
		2014		2013
	Basic earnings per share:
	Net income	$	4,801	$	5,688
	Less:
	Undistributed earnings allocated to participating securities	58		6
	Dividends paid on participating securities	11		93
	Net income available to common shareholders	$	4,732	$	5,589
	Weighted-average basic shares outstanding	12,403,387		8,125,279
	Basic earnings per share	$	0.38	$	0.69
	Diluted earnings per share:
	Net income available to common shareholders	$	4,732	$	5,589
	Total weighted-average basic shares outstanding	12,403,387		8,125,279
	Add dilutive stock warrants	101,643		42,447
	Total weighted-average diluted shares outstanding	12,505,030		8,167,726
	Diluted earnings per share	$	0.38	$	0.68
	Pro forma earnings per share:
	Pro forma net income	n/a		$	3,822
	Less undistributed earnings allocated to participating securities	n/a		(27		)
	Less dividends paid on participating securities	n/a		93
	Pro forma net income available to common shareholders after tax	n/a		$	3,756
	Pro forma basic earnings per share	n/a		$	0.46
	Pro forma diluted earnings per share	n/a		$	0.46
	Anti-dilutive participating securities	109,040		118,572

Statement_of_Cash_Flows_Tables

Statement of Cash Flows (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Other Supplemental Cash Flow Information	'
	Other supplemental cash flow information is presented below:
		Three Month Ended March 31,
		2014			2013
	Cash transactions:
	Interest expense paid	$	3,045		$	3,250
	Income taxes paid	$	2,700		$	—
	Noncash transactions:
	Dividends declared, not yet paid	$	—		$	2,324
	Transfers of loans to other real estate owned	$	120		$	2,503
	Loans to facilitate the sale of other real estate owned	$	48		$	—
	Security purchased, not yet settled	$	2,000		$	—
	Excess tax benefit on restricted stock vested	$	1,022		$	—
	Supplemental schedule of noncash investing activities from the Live Oak Financial Corp. acquisition is as follows:
		Three Months Ended March 31,
		2014			2013
	Noncash assets acquired
	Cash and cash equivalents	$	32,246		$	—
	Securities available for sale	16,740			—
	Loans	71,138			—
	Premises and equipment	2,600			—
	Goodwill	7,122			—
	Core deposit intangibles	882			—
	Other assets	230			—
	Total assets	$	130,958		$	—
	Noncash liabilities assumed:
	Deposits	$	104,960		$	—
	Repurchase agreements	3,733			—
	Other liabilities	565			—
	Total liabilities	$	109,258		$	—
	Cash paid to shareholders of acquired bank	$	10,000		$	—
	Fair value of common stock issued to shareholders of acquired bank	$	11,700		$	—
	In addition, the following measurement-period adjustments were made during the period relating the November 30, 2013 acquisition of Collin Bank:
		Three Months Ended March 31,
		2014			2013
	Noncash assets acquired:
	Loans	$	(328	)	$	—
	Goodwill	749			—
	Core deposit intangibles	(18		)	—
	Deferred tax asset	109			—
	Other assets	10			—
	Total assets	$	522		$	—
	Noncash liabilities assumed:
	Deposits	$	505		$	—
	Other liabilities	17			—
	Total liabilities	$	522		$	—

Securities_Available_for_Sale_

Securities Available for Sale (Tables)	3 Months Ended
	Mar. 31, 2014
Available-for-sale Securities [Abstract]	'
Amortized Cost of Securities and Approximate Fair Values	'
	The amortized cost of securities and their approximate fair values at March 31, 2014 and December 31, 2013, are as follows:
		Amortized				Gross				Gross			Fair
		Cost				Unrealized				Unrealized			Value
						Gains				Losses
	Securities Available for Sale
	March 31, 2014:
	U.S. treasuries	$	999			$	9			$	—		$	1,008
	Government agency securities	90,761				134				(657		)	90,238
	Obligations of state and municipal subdivisions	37,545				959				(1,050		)	37,454
	Corporate bonds	2,076				—				(4		)	2,072
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,380				419				(32		)	73,767
		$	204,761			$	1,521			$	(1,743	)	$	204,539
	December 31, 2013:
	U.S. treasuries	$	3,498			$	15			$	—		$	3,513
	Government agency securities	95,407				84				(1,076		)	94,415
	Obligations of state and municipal subdivisions	37,861				541				(1,787		)	36,615
	Corporate bonds	2,079				—				(27		)	2,052
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	57,844				67				(468		)	57,443
		$	196,689			$	707			$	(3,358	)	$	194,038
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 March 31, 2014, 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.
		March 31, 2014
		Securities Available for Sale
		Amortized				Fair
		Cost				Value
	Due in one year or less	$	2,595			$	2,600
	Due from one year to five years	63,732				63,247
	Due from five to ten years	32,623				32,697
	Thereafter	32,431				32,228
		131,381				130,772
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,380				73,767
		$	204,761			$	204,539
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 March 31, 2014 and December 31, 2013, are summarized as follows:
		Less Than 12 Months										Greater Than 12 Months						Total
	Description of Securities	Number of Securities		Estimated				Unrealized				Number of Securities	Estimated		Unrealized			Estimated		Unrealized
				Fair Value				Losses					Fair Value		Losses			Fair Value		Losses
	Securities Available for Sale
	March 31, 2014
	Government agency securities	34		$	51,181			$	(657	)		—	$	—	$	—		$	51,181	$	(657	)
	Obligations of state and municipal subdivisions	12		7,211				(289		)		13	7,975		(761		)	15,186		(1,050		)
	Corporate bonds	1		1,073				(4		)		—	—		—			1,073		(4		)
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	7		13,741				(32		)		—	—		—			13,741		(32		)
		54		$	73,206			$	(982	)		13	$	7,975	$	(761	)	$	81,181	$	(1,743	)
	December 31, 2013
	Government agency securities	46		$	74,331			$	(1,076	)		—	$	—	$	—		$	74,331	$	(1,076	)
	Obligations of state and municipal subdivisions	21		11,888				(1,139		)		6	4,047		(648		)	15,935		(1,787		)
	Corporate bonds	2		2,052				(27		)		—	—		—			2,052		(27		)
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	14		49,126				(468		)		—	—		—			49,126		(468		)
		83		$	137,397			$	(2,710	)		6	$	4,047	$	(648	)	$	141,444	$	(3,358	)

Loans_Net_and_Allowance_for_Lo1

Loans, Net and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Compositions of Loans	'
	Loans, net at March 31, 2014 and December 31, 2013, consisted of the following:
			March 31,				December 31,
			2014				2013
	Commercial		$	270,608			$	241,178
	Real estate:
	Commercial		927,408				843,436
	Commercial construction, land and land development		153,734				130,320
	Residential		360,152				338,654
	Single family interim construction		93,587				83,144
	Agricultural		41,642				40,558
	Consumer		45,906				45,762
	Other		45				108
			1,893,082				1,723,160
	Allowance for loan losses		(14,841		)		(13,960		)
			$	1,878,241			$	1,709,200
Summary of Activity in Allowance for Loan Losses by Loan Class	'
	The following is a summary of the activity in the allowance for loan losses by loan class for the three months ended March 31, 2014 and 2013:
		Commercial			Commercial			Residential			Single-Family			Agricultural			Consumer			Other		Unallocated			Total
					Real Estate,			Real Estate			Interim
					Land and Land						Construction
					Development
	Three months ended March 31, 2014
	Balance at the beginning of period	$	2,401		$	7,872		$	2,440		$	577		$	238		$	363		$	—	$	69		$	13,960
	Provision for loan losses	578			256			(163		)	(42		)	6			(6		)	—		624			1,253
	Charge-offs	(363		)	(21		)	(1		)	—			—			(14		)	—		—			(399		)
	Recoveries	4			10			2			1			—			10			—		—			27
	Balance at end of period	$	2,620		$	8,117		$	2,278		$	536		$	244		$	353		$	—	$	693		$	14,841
	Three months ended March 31, 2013
	Balance at the beginning of period	$	2,377		$	4,924		$	2,965		$	523		$	159		$	278		$	—	$	252		$	11,478
	Provision for loan losses	(280		)	2,082			(548		)	(158		)	73			59			—		(198		)	1,030
	Charge-offs	—			(531		)	—			—			—			(12		)	—		—			(543		)
	Recoveries	4			3			3			—			—			9			—		—			19
	Balance at end of period	$	2,101		$	6,478		$	2,420		$	365		$	232		$	334		$	—	$	54		$	11,984
	The following table details the amount of the allowance for loan losses and recorded investment in loans by class as of March 31, 2014 and December 31, 2013:
		Commercial			Commercial			Residential			Single-Family			Agricultural			Consumer			Other		Unallocated			Total
					Real Estate,			Real Estate			Interim
					Land and Land						Construction
					Development
	31-Mar-14
	Allowance for losses:
	Individually evaluated for impairment	$	53		$	272		$	40		$	—		$	—		$	21		$	—	$	—		$	386
	Collectively evaluated for impairment	2,567			7,845			2,238			536			244			332			—		693			14,455
	Loans acquired with deteriorated credit quality	—			—			—			—			—			—			—		—			—
	Ending balance	$	2,620		$	8,117		$	2,278		$	536		$	244		$	353		$	—	$	693		$	14,841
	Loans:
	Individually evaluated for impairment	$	251		$	7,562		$	3,232		$	—		$	—		$	57		$	—	$	—		$	11,102
	Collectively evaluated for impairment	264,548			1,067,232			354,870			93,587			41,642			45,840			45		—			1,867,764
	Acquired with deteriorated credit quality	5,809			6,348			2,050			—			—			9			—		—			14,216
	Ending balance	$	270,608		$	1,081,142		$	360,152		$	93,587		$	41,642		$	45,906		$	45	$	—		$	1,893,082
	31-Dec-13
	Allowance for losses:
	Individually evaluated for impairment	$	313		$	504		$	14		$	—		$	—		$	24		$	—	$	—		$	855
	Collectively evaluated for impairment	2,088			7,368			2,426			577			238			339			—		69			13,105
	Loans acquired with deteriorated credit quality	—			—			—			—			—			—			—		—			—
	Ending balance	$	2,401		$	7,872		$	2,440		$	577		$	238		$	363		$	—	$	69		$	13,960
	Loans:
	Individually evaluated for impairment	$	501		$	8,013		$	3,182		$	170		$	—		$	68		$	—	$	—		$	11,934
	Collectively evaluated for impairment	234,103			959,254			334,770			82,974			40,558			45,682			108		—			1,697,449
	Acquired with deteriorated credit quality	6,574			6,489			702			—			—			12			—		—			13,777
	Ending balance	$	241,178		$	973,756		$	338,654		$	83,144		$	40,558		$	45,762		$	108	$	—		$	1,723,160
Summary of Nonperforming Loans by Loan Class	'
	Nonperforming loans by loan class at March 31, 2014 and December 31, 2013, are summarized as follows:
			Commercial				Commercial				Residential Real Estate				Single-Family				Agricultural			Consumer				Other		Total
							Real Estate,								Interim
							Land and Land								Construction
							Development
	31-Mar-14
	Nonaccrual loans		$	52			$	99			$	1,918			$	—			$	—		$	35			$	—	$	2,104
	Loans past due 90 days and still accruing		600				—				—				—				—			—				—		600
	Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)		99				5,031				1,273				—				—			—				—		6,403
			$	751			$	5,130			$	3,191			$	—			$	—		$	35			$	—	$	9,107
	31-Dec-13
	Nonaccrual loans		$	357			$	253			$	1,852			$	170			$	—		$	43			$	—	$	2,675
	Loans past due 90 days and still accruing		—				—				—				—				—			—				—		—
	Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)		107				3,571				425				—				—			1				—		4,104
			$	464			$	3,824			$	2,277			$	170			$	—		$	44			$	—	$	6,779
Impaired Loans by Loan Class	'
	Impaired loans by loan class at March 31, 2014 and December 31, 2013, are summarized as follows:
			Commercial				Commercial				Residential				Single-Family				Agricultural			Consumer				Other		Total
							Real Estate,				Real Estate				Interim
							Land and Land								Construction
							Development
	31-Mar-14
	Recorded investment in impaired loans:
	Impaired loans with an allowance for loan losses		$	93			$	2,362			$	102			$	—			$	—		$	33			$	—	$	2,590
	Impaired loans with no allowance for loan losses		158				5,200				3,130				—				—			24				—		8,512
	Total		$	251			$	7,562			$	3,232			$	—			$	—		$	57			$	—	$	11,102
	Unpaid principal balance of impaired loans		$	252			$	8,591			$	3,270			$	—			$	—		$	65			$	—	$	12,178
	Allowance for loan losses on impaired loans		$	53			$	272			$	40			$	—			$	—		$	21			$	—	$	386
	31-Dec-13
	Recorded investment in impaired loans:
	Impaired loans with an allowance for loan losses		$	401			$	3,866			$	1,135			$	—			$	—		$	40			$	—	$	5,442
	Impaired loans with no allowance for loan losses		100				4,147				2,047				170				—			28				—		6,492
	Total		$	501			$	8,013			$	3,182			$	170			$	—		$	68			$	—	$	11,934
	Unpaid principal balance of impaired loans		$	501			$	8,408			$	3,216			$	170			$	—		$	75			$	—	$	12,370
	Allowance for loan losses on impaired loans		$	313			$	504			$	14			$	—			$	—		$	24			$	—	$	855
	For the three months ended March 31, 2014
	Average recorded investment in impaired loans		$	376			$	7,788			$	3,207			$	85			$	—		$	63			$	—	$	11,519
	Interest income recognized on impaired loans		$	3			$	107			$	28			$	—			$	—		$	—			$	—	$	138
	For the three months ended March 31, 2013
	Average recorded investment in impaired loans		$	774			$	9,572			$	3,476			$	—			$	—		$	93			$	—	$	13,915
	Interest income recognized on impaired loans		$	9			$	106			$	46			$	—			$	—		$	2			$	—	$	163
Summary of Troubled Debt Restructurings	'
	Following is a summary of loans modified under troubled debt restructurings during the three months ended March 31, 2014 and 2013:
	.
			Commercial				Commercial				Residential				Single-Family				Agricultural			Consumer				Other		Total
							Real Estate,				Real Estate				Interim
							Land and Land								Construction
							Development
	Troubled debt restructurings during the three months ended March 31, 2014
	Number of contracts		—				1				—				—				—			—				—		1
	Pre-restructuring outstanding recorded investment		$	—			$	700			$	—			$	—			$	—		$	—			$	—	$	700
	Post-restructuring outstanding recorded investment		$	—			$	700			$	—			$	—			$	—		$	—			$	—	$	700
	Troubled debt restructurings during the three months ended March 31, 2013
	Number of contracts		—				—				—				—				—			—				—		—
	Pre-restructuring outstanding recorded investment		$	—			$	—			$	—			$	—			$	—		$	—			$	—	$	—
	Post-restructuring outstanding recorded investment		$	—			$	—			$	—			$	—			$	—		$	—			$	—	$	—
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 March 31, 2014 and December 31, 2013:
			Loans				Loans				Total Past				Current				Total
			30-89 Days				90 or More				Due Loans				Loans				Loans
			Past Due				Past Due
	31-Mar-14
	Commercial		$	455			$	600			$	1,055			$	269,553			$	270,608
	Commercial real estate, land and land  development		357				—				357				1,080,785				1,081,142
	Residential real estate		878				281				1,159				358,993				360,152
	Single-family interim construction		—				—				—				93,587				93,587
	Agricultural		119				—				119				41,523				41,642
	Consumer		122				—				122				45,784				45,906
	Other		—				—				—				45				45
			$	1,931			$	881			$	2,812			$	1,890,270			$	1,893,082
	31-Dec-13
	Commercial		$	257			$	357			$	614			$	240,564			$	241,178
	Commercial real estate, land and land  development		2,076				73				2,149				971,607				973,756
	Residential real estate		1,322				1,603				2,925				335,729				338,654
	Single-family interim construction		—				170				170				82,974				83,144
	Agricultural		3				—				3				40,555				40,558
	Consumer		97				1				98				45,664				45,762
	Other		—				—				—				108				108
			$	3,755			$	2,204			$	5,959			$	1,717,201			$	1,723,160
Summary of Loans by Credit Quality Indicator by Class	'
	A summary of loans by credit quality indicator by class as of March 31, 2014 and December 31, 2013, is as follows:
			Pass				Pass/				OAEM				Substandard				Doubtful			Total
			(Rating 1-4)				Watch
	March 31, 2014
	Commercial		$	259,802			$	9,367			$	1,099			$	340			$	—		$	270,608
	Commercial real estate, construction, land  and land development		1,061,991				8,907				5,359				4,885				—			1,081,142
	Residential real estate		349,393				6,404				296				4,059				—			360,152
	Single-family interim construction		93,587				—				—				—				—			93,587
	Agricultural		41,418				207				—				17				—			41,642
	Consumer		45,766				60				14				66				—			45,906
	Other		45				—				—				—				—			45
			$	1,852,002			$	24,945			$	6,768			$	9,367			$	—		$	1,893,082
	31-Dec-13
	Commercial		$	231,080			$	7,199			$	1,311			$	1,453			$	135		$	241,178
	Commercial real estate, construction, land  and land development		952,863				10,697				2,982				7,214				—			973,756
	Residential real estate		328,918				5,379				454				3,903				—			338,654
	Single-family interim construction		83,144				—				—				—				—			83,144
	Agricultural		40,328				210				—				20				—			40,558
	Consumer		45,556				82				39				85				—			45,762
	Other		108				—				—				—				—			108
			$	1,681,997			$	23,567			$	4,786			$	12,675			$	135		$	1,723,160
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	'
	The following table summarizes the outstanding balance and related carrying amount of purchased credit impaired loans by acquired bank as of the respective acquisition date for the acquisitions occurring in 2014 and 2013:
			Acquisition Date
			1-Jan-14				30-Nov-13
			Live Oak				Collin Bank
	Outstanding balance		$	3,583			$	11,897
	Nonaccretable difference		(519		)		(1,810		)
	Accretable yield		(182		)		(408		)
	Carrying amount		$	2,882			$	9,679
	The carrying amount of all acquired PCI loans included in the consolidated balance sheet and the related outstanding balance at March 31, 2014 and December 31, 2013, were as follows:
		March 31,				December 31,
		2014				2013
	Outstanding balance	$	17,783			$	15,768
	Carrying amount	14,216				13,777

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	At March 31, 2014 and December 31, 2013, the approximate amounts of these financial instruments were as follows:
		March 31,		December 31,
		2014		2013
	Commitments to extend credit	$	362,808	$	365,575
	Standby letters of credit	2,283		2,120
		$	365,091	$	367,695

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Schedule of Income Tax Expense	'
	Income tax expense for the three months ended March 31, 2014 was as follows:
		Three Months Ended March 31, 2014
	Income tax expense for the period	$	2,339
	Effective tax rate	32.8		%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Assets at Fair Value on Recurring Basis	'
	The following table represents assets reported on the consolidated balance sheets at their fair value on a recurring basis as of March 31, 2014 and December 31, 2013 by level within the ASC Topic 820 fair value measurement hierarchy:
				Fair Value Measurements at Reporting Date Using
		Assets/		Quoted Prices		Significant		Significant
		Liabilities		in Active		Other		Unobservable
		Measured at		Markets for		Observable		Inputs
		Fair Value		Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	March 31, 2014
	Measured on a recurring basis:
	Assets:
	Investment securities available for sale:
	U.S. treasuries	$	1,008	$	—	$	1,008	$	—
	Government agency securities	90,238		—		90,238		—
	Obligations of state and municipal subdivisions	37,454		—		37,454		—
	Corporate bonds	2,072		—		2,072		—
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,767		—		73,767		—
	31-Dec-13
	Measured on a recurring basis:
	Assets:
	Investment securities available for sale:
	U.S. treasuries	$	3,513	$	—	$	3,513	$	—
	Government agency securities	94,415		—		94,415		—
	Obligations of state and municipal subdivisions	36,615		—		36,615		—
	Corporate bonds	2,052		—		2,052		—
	Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	57,443		—		57,443		—
Contingent Consideration Related to Acquisition of Town Center Bank	'
	The following table presents the activity in the contingent consideration for the three months ended March 31, 2013:
		Three months ended March 31,
		2013
	Balance, beginning of period	$	290
	Settlements	—
	Change in estimated payments to be made	—
	Balance, end of period	$	290
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 March 31, 2014 and December 31, 2013, for which a nonrecurring change in fair value has been recorded:
				Fair Value Measurements at Reporting Date Using
		Assets		Quoted Prices		Significant		Significant		Period Ended
		Measured		in Active		Other		Unobservable		Total Losses
		at Fair Value		Markets for		Observable		Inputs (Level 3)
				Identical Assets		Inputs
				(Level 1)		(Level 2)
	31-Mar-14
	Measured on a nonrecurring basis:
	Assets:
	Impaired loans	$	1,781	$	—	$	—	$	1,781	$	78
	Other real estate	—		—		—		—		$	—
	31-Dec-13
	Measured on a nonrecurring basis:
	Assets:
	Impaired loans	$	1,514	$	—	$	—	$	1,514	$	497
	Other real estate	2,449		—		—		2,449		537
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 March 31, 2014 and December 31, 2013:
						Fair Value Measurements at Reporting Date Using
		Carrying		Estimated		Quoted Prices		Significant		Significant
		Amount		Fair Value		in Active		Other		Unobservable
						Markets for		Observable		Inputs
						Identical Assets		Inputs		(Level 3)
						(Level 1)		(Level 2)
	31-Mar-14
	Financial assets:
	Cash and cash equivalents	$	97,715	$	97,715	$	97,715	$	—	$	—
	Securities available for sale	204,539		204,539		—		204,539		—
	Loans held for sale	2,191		2,191		—		2,191		—
	Loans, net	1,878,241		1,878,368		—		1,876,164		2,204
	FHLB of Dallas stock and other restricted stock	9,012		9,012		—		9,012		—
	Accrued interest receivable	5,355		5,355		—		5,355		—
	Financial liabilities:
	Deposits	1,890,677		1,892,774		—		1,892,774		—
	Accrued interest payable	930		930		—		930		—
	FHLB advances	174,462		177,857		—		177,857		—
	Repurchase agreements	4,535		4,535		—		4,535		—
	Other borrowings	7,730		7,927		—		7,927		—
	Junior subordinated debentures	18,147		18,123		—		18,123		—
	Off-balance sheet assets (liabilities):
	Commitments to extend credit	—		—		—		—		—
	Standby letters of credit	—		—		—		—		—
	31-Dec-13
	Financial assets:
	Cash and cash equivalents	$	93,054	$	93,054	$	93,054	$	—	$	—
	Certificates of deposit held in other banks	—		—		—		—		—
	Securities available for sale	194,038		194,038		—		194,038		—
	Loans held for sale	3,383		3,383		—		3,383		—
	Loans, net	1,709,200		1,714,815		—		1,710,228		4,587
	FHLB of Dallas stock and other restricted stock	9,494		9,494		—		9,494		—
	Accrued interest receivable	4,713		4,713		—		4,713		—
	Financial liabilities:
	Deposits	1,710,319		1,712,654		—		1,712,654		—
	Accrued interest payable	948		948		—		948		—
	FHLB advances	187,484		189,092		—		189,092		—
	Notes payable	—		—		—		—		—
	Other borrowings	7,730		8,061		—		8,061		—
	Junior subordinated debentures	18,147		18,099		—		18,099		—
	Contingent consideration	—		—		—		—		—
	Off-balance sheet assets (liabilities):
	Commitments to extend credit	—		—		—		—		—
	Standby letters of credit	—		—		—		—		—

Stock_Awards_and_Stock_Warrant1

Stock Awards and Stock Warrants (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Nonvested Shares Activity	'
	The following table summarizes the activity in nonvested shares for the years ended March 31, 2014 and 2013:
		Number of		Weighted
		Shares		Average
				Grant Date
				Fair Value
	Nonvested shares, December 31, 2013	306,524		$	22.75
	Granted during the period	27,183		50.8
	Vested during the period	(92,000	)	17.92
	Nonvested shares, March 31, 2014	241,707		$	27.75
	Nonvested shares, December 31, 2012	208,608		$	17.07
	Granted during the period	—		—
	Vested during the period	(16,317	)	11.94
	Nonvested shares, March 31, 2013	192,291		$	18.05
Schedule Of Vesting Of Restricted Stock Award Table	'
	At March 31, 2014, the future vesting schedule of the nonvested shares is as follows:
	First year	56,730
	Second year	42,050
	Third year	59,439
	Fourth year	60,704
	Fifth year	22,784
	Total nonvested shares	241,707

Regulatory_Matters_Tables

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2014
Regulated Operations [Abstract]	'
Schedule of Compliance with Regulatory Capital Requirements	'
	The actual capital amounts and ratios of the Company and Bank as of March 31, 2014 and December 31, 2013, are presented in the following table:
		Actual				Minimum for Capital				To Be Well
						Adequacy Purposes				Capitalized Under
										Prompt Corrective
										Action Provisions
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	March 31, 2014
	Total capital to risk weighted assets:
	Consolidated	$	244,296	13.08	%	$	149,384	8	%	N/A		N/A
	Bank	230,602		12.37		149,174		8		$	186,467	10	%
	Tier I capital to risk weighted assets:
	Consolidated	223,271		11.96		74,692		4		N/A		N/A
	Bank	215,761		11.57		74,587		4		111,880		6	%
	Tier I capital to average assets:
	Consolidated	223,271		9.77		91,382		4		N/A		N/A
	Bank	215,761		9.52		90,649		4		113,311		5	%
	31-Dec-13
	Total capital to risk weighted assets:
	Consolidated	$	234,794	13.83	%	$	135,801	8	%	N/A		N/A
	Bank	212,656		12.54		135,648		8		$	169,560	10	%
	Tier I capital to risk weighted assets:
	Consolidated	214,650		12.64		67,901		4		N/A		N/A
	Bank	198,696		11.72		67,824		4		101,736		6	%
	Tier I capital to average assets:
	Consolidated	214,650		10.71		80,204		4		N/A		N/A
	Bank	198,696		9.97		79,710		4		99,637		5	%

Business_Combinations_Tables

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Estimated Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the previously reported estimates and the measurement-period adjustments made to asset and liability accounts to derive at the final purchase accounting allocations for Collin Bank.
		As Reported at December 31, 2013		Measurement Period Adjustments			Final Recorded Value
	Assets of acquired bank:
	Cash and cash equivalents	$	22,792	$	—		$	22,792
	Securities available for sale	62,373		—			62,373
	Loans	72,611		(328		)	72,283
	Premises and equipment	141		—			141
	Investment in FHLB stock	1,156		—			1,156
	Goodwill	5,962		749			6,711
	Core deposit intangible	600		(18		)	582
	Deferred tax asset	1,385		109			1,494
	Other assets	775		10			785
	Total assets	$	167,795	$	522		$	168,317
	Liabilities of acquired bank:
	Deposits	$	111,164	$	505		$	111,669
	FHLB advances	26,000		—			26,000
	Other liabilities	358		17			375
	Total liabilities	$	137,522	$	522		$	138,044
	Common stock issued in the Collin Bank transaction	$	11,861	$	—		$	11,861
	Cash paid in the Collin Bank transaction	$	18,412	$	—		$	18,412
	Fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	32,246
	Securities available for sale	16,740
	Loans	71,138
	Premises and equipment	2,600
	Goodwill	7,122
	Core deposit intangible	882
	Other assets	230
	Total assets	$	130,958
	Liabilities of acquired bank:
	Deposits	$	104,960
	Repurchase agreements	3,733
	Other liabilities	565
	Total liabilities	$	109,258
	Common stock issued in the Live Oak transaction	$	11,700
	Cash paid in the Live Oak transaction	$	10,000
	Estimated fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	135,525
	Securities available for sale	58,978
	Loans	786,160
	Premises and equipment	7,464
	Goodwill	165,885
	Core deposit intangible	6,610
	Other assets	28,118
	Total assets acquired	$	1,188,740
	Liabilities of acquired bank:
	Deposits	$	820,752
	FHLB Advances	95,000
	Other liabilities	6,235
	Total liabilities assumed	$	921,987
	Common stock issued at $57.75 per share	$	208,817
	Series A Preferred Stock Exchanged	$	23,938
	Cash paid	$	33,998

Subsequent_Events_Tables

Subsequent Events (Tables)	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Estimated Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the previously reported estimates and the measurement-period adjustments made to asset and liability accounts to derive at the final purchase accounting allocations for Collin Bank.
		As Reported at December 31, 2013		Measurement Period Adjustments			Final Recorded Value
	Assets of acquired bank:
	Cash and cash equivalents	$	22,792	$	—		$	22,792
	Securities available for sale	62,373		—			62,373
	Loans	72,611		(328		)	72,283
	Premises and equipment	141		—			141
	Investment in FHLB stock	1,156		—			1,156
	Goodwill	5,962		749			6,711
	Core deposit intangible	600		(18		)	582
	Deferred tax asset	1,385		109			1,494
	Other assets	775		10			785
	Total assets	$	167,795	$	522		$	168,317
	Liabilities of acquired bank:
	Deposits	$	111,164	$	505		$	111,669
	FHLB advances	26,000		—			26,000
	Other liabilities	358		17			375
	Total liabilities	$	137,522	$	522		$	138,044
	Common stock issued in the Collin Bank transaction	$	11,861	$	—		$	11,861
	Cash paid in the Collin Bank transaction	$	18,412	$	—		$	18,412
	Fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	32,246
	Securities available for sale	16,740
	Loans	71,138
	Premises and equipment	2,600
	Goodwill	7,122
	Core deposit intangible	882
	Other assets	230
	Total assets	$	130,958
	Liabilities of acquired bank:
	Deposits	$	104,960
	Repurchase agreements	3,733
	Other liabilities	565
	Total liabilities	$	109,258
	Common stock issued in the Live Oak transaction	$	11,700
	Cash paid in the Live Oak transaction	$	10,000
	Estimated fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:
	Assets of acquired bank:
	Cash and cash equivalents	$	135,525
	Securities available for sale	58,978
	Loans	786,160
	Premises and equipment	7,464
	Goodwill	165,885
	Core deposit intangible	6,610
	Other assets	28,118
	Total assets acquired	$	1,188,740
	Liabilities of acquired bank:
	Deposits	$	820,752
	FHLB Advances	95,000
	Other liabilities	6,235
	Total liabilities assumed	$	921,987
	Common stock issued at $57.75 per share	$	208,817
	Series A Preferred Stock Exchanged	$	23,938
	Cash paid	$	33,998

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
	segment	Pro Forma
Summary Of Significant Accounting Policies [Line Items]	'	'
Number of reportable segments (segment)	1	'
Effective tax rates (percent)	32.80%	32.80%
Federal income tax at statutory rate (percent)	35.00%	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies-EPS (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Line Items]	'	'
Net income	$4,801	$5,688
Undistributed earnings allocated to participating securities	58	6
Dividends paid on participating securities	11	93
Net income available to common shareholders	4,732	5,589
Weighted-average basic shares outstanding (shares)	12,403,387	8,125,279
Basic earnings per share (usd per share)	$0.38	$0.69
Add dilutive stock warrants (shares)	101,643	42,447
Total weighted-average diluted shares outstanding (shares)	12,505,030	8,167,726
Diluted earnings per share (usd per share)	$0.38	$0.68
Anti-dilutive participating securities (shares)	109,040	118,572
Pro Forma	'	'
Earnings Per Share [Line Items]	'	'
Net income	'	3,822
Undistributed earnings allocated to participating securities	'	-27
Dividends paid on participating securities	'	93
Net income available to common shareholders	'	$3,756
Pro forma basic earnings per share (usd per share)	'	$0.46
Pro forma diluted earnings per share (usd per share)	'	$0.46

Statement_of_Cash_Flows_Additi

Statement of Cash Flows - Additional Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash transactions:	'	'
Interest expense paid	$3,045	$3,250
Income taxes paid	2,700	0
Noncash transactions:	'	'
Dividends declared, not yet paid	0	2,324
Transfers of loans to other real estate owned	120	2,503
Loans to facilitate the sale of other real estate owned	48	0
Security purchased, not yet settled	2,000	0
Excess tax benefit on restricted stock vested	$1,022	$0

Statement_of_Cash_Flows_Noncas

Statement of Cash Flows - Noncash Investing Activities from Acquisitions and Branch Sale (Details) (USD $)	3 Months Ended		0 Months Ended	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Jan. 02, 2014	Mar. 31, 2014	Mar. 31, 2013
			Live Oak Financial Corp	Live Oak Financial Corp	Live Oak Financial Corp
Noncash assets acquired	'	'	'	'	'
Cash and cash equivalents	'	'	$32,246	$32,246	$0
Securities available for sale	'	'	16,740	16,740	0
Loans	'	'	71,138	71,138	0
Premises and equipment	'	'	2,600	2,600	0
Goodwill	42,575	'	7,122	7,122	0
Core deposit intangibles	'	'	882	882	0
Other assets	'	'	230	230	0
Total assets	'	'	130,958	130,958	0
Noncash liabilities assumed:	'	'	'	'	'
Deposits	'	'	104,960	104,960	0
Repurchase agreements	'	'	3,733	3,733	0
Other liabilities	'	'	565	565	0
Total liabilities	'	'	109,258	109,258	0
Cash paid to shareholders of acquired bank	10,000	0	10,000	10,000	0
Fair value of common stock issued to shareholders of acquired bank	'	'	$11,700	$11,700	$0

Statement_of_Cash_Flows_Measur

Statement of Cash Flows - Measurement-Period Adjustments (Details) (Collin Bank, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Noncash assets acquired	'	'
Loans	$72,283	'
Core deposit intangibles	582	'
Deferred tax asset	1,494	'
Other assets	785	'
Total assets	168,317	'
Noncash liabilities assumed:	'	'
Deposits	111,669	'
Other liabilities	375	'
Total liabilities	138,044	'
Purchase Price Allocation Adjustment	'	'
Noncash assets acquired	'	'
Loans	-328	0
Goodwill	749	0
Core deposit intangibles	-18	0
Deferred tax asset	109	0
Other assets	10	0
Total assets	522	0
Noncash liabilities assumed:	'	'
Deposits	505	0
Other liabilities	17	0
Total liabilities	$522	$0

Securities_Available_for_Sale_1

Securities Available for Sale - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]	'	'
Carrying value of securities pledged	$165,746	$111,673

Securities_Available_for_SaleA

Securities Available for Sale-Amortized Cost of Securities and Approximate Fair Values (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$204,761	$196,689
Gross Unrealized Gains	1,521	707
Gross Unrealized Losses	-1,743	-3,358
Fair Value	204,539	194,038
U.S. treasuries	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	999	3,498
Gross Unrealized Gains	9	15
Gross Unrealized Losses	0	0
Fair Value	1,008	3,513
Government agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	90,761	95,407
Gross Unrealized Gains	134	84
Gross Unrealized Losses	-657	-1,076
Fair Value	90,238	94,415
Obligations of state and municipal subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	37,545	37,861
Gross Unrealized Gains	959	541
Gross Unrealized Losses	-1,050	-1,787
Fair Value	37,454	36,615
Corporate bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	2,076	2,079
Gross Unrealized Gains	0	0
Gross Unrealized Losses	-4	-27
Fair Value	2,072	2,052
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	73,380	57,844
Gross Unrealized Gains	419	67
Gross Unrealized Losses	-32	-468
Fair Value	$73,767	$57,443

Securities_Available_for_SaleA1

Securities Available for Sale-Amortized Cost and Estimated Fair Value of Securities Available for Sale by Contractual Maturity (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized Cost	'	'
Due in one year or less	$2,595	'
Due from one year to five years	63,732	'
Due from five to ten years	32,623	'
Thereafter	32,431	'
Total	131,381	'
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,380	'
Total	204,761	196,689
Fair Value	'	'
Due in one year or less	2,600	'
Due from one year to five years	63,247	'
Due from five to ten years	32,697	'
Thereafter	32,228	'
Total	130,772	'
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	73,767	'
Fair Value	$204,539	$194,038

Securities_Available_for_SaleS

Securities Available for Sale-Summary of Unrealized Losses and Fair Value of Securities in COntinuous Unrealized Loss Positions (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	security	security
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities, Less Than 12 Months	54	83
Less than 12 months: Estimated Fair Value	$73,206	$137,397
Less than 12 months: Unrealized Losses	-982	-2,710
Number of Securities, Greater than 12 Months	13	6
Greater Than 12 Months: Estimated Fair Value	7,975	4,047
Greater Than 12 Months: Unrealized Losses	-761	-648
Total: Estimated Fair Value	81,181	141,444
Total: Unrealized Losses	-1,743	-3,358
Government agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities, Less Than 12 Months	34	46
Less than 12 months: Estimated Fair Value	51,181	74,331
Less than 12 months: Unrealized Losses	-657	-1,076
Number of Securities, Greater than 12 Months	0	0
Greater Than 12 Months: Estimated Fair Value	0	0
Greater Than 12 Months: Unrealized Losses	0	0
Total: Estimated Fair Value	51,181	74,331
Total: Unrealized Losses	-657	-1,076
Obligations of state and municipal subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities, Less Than 12 Months	12	21
Less than 12 months: Estimated Fair Value	7,211	11,888
Less than 12 months: Unrealized Losses	-289	-1,139
Number of Securities, Greater than 12 Months	13	6
Greater Than 12 Months: Estimated Fair Value	7,975	4,047
Greater Than 12 Months: Unrealized Losses	-761	-648
Total: Estimated Fair Value	15,186	15,935
Total: Unrealized Losses	-1,050	-1,787
Corporate bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities, Less Than 12 Months	1	2
Less than 12 months: Estimated Fair Value	1,073	2,052
Less than 12 months: Unrealized Losses	-4	-27
Number of Securities, Greater than 12 Months	0	0
Greater Than 12 Months: Estimated Fair Value	0	0
Greater Than 12 Months: Unrealized Losses	0	0
Total: Estimated Fair Value	1,073	2,052
Total: Unrealized Losses	-4	-27
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities, Less Than 12 Months	7	14
Less than 12 months: Estimated Fair Value	13,741	49,126
Less than 12 months: Unrealized Losses	-32	-468
Number of Securities, Greater than 12 Months	0	0
Greater Than 12 Months: Estimated Fair Value	0	0
Greater Than 12 Months: Unrealized Losses	0	0
Total: Estimated Fair Value	13,741	49,126
Total: Unrealized Losses	($32)	($468)

Loans_Net_and_Allowance_for_Lo2

Loans, Net and Allowance for Loan Losses - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
	component
Accounts Notes And Loans Receivable [Line Items]	'	'
Period of operating lines	'1 year	'
Number of components allowance for loan losses is derived from	2	'
Recorded investment in troubled debt restructuring including nonaccraul	$7,827,000	$7,938,000
Minimum	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'
Loans Requiring External Review	$1,500,000	'
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%	'
Consumer | Maximum	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'
Percentage of total loan portfolio (percent)	3.00%	'

Loans_Net_and_Allowance_for_Lo3

Loans, Net and Allowance for Loan Losses-Composition of Loans (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	$1,893,082	$1,723,160	'	'
Allowance for loan losses	-14,841	-13,960	-11,984	-11,478
Loans, net	1,878,241	1,709,200	'	'
Commercial	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	270,608	241,178	'	'
Allowance for loan losses	-2,620	-2,401	-2,101	-2,377
Commercial real estate	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	927,408	843,436	'	'
Commercial construction, land and land development	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	153,734	130,320	'	'
Residential Real Estate	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	360,152	338,654	'	'
Allowance for loan losses	-2,278	-2,440	-2,420	-2,965
Single-Family Interim Construction	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	93,587	83,144	'	'
Allowance for loan losses	-536	-577	-365	-523
Agricultural	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	41,642	40,558	'	'
Allowance for loan losses	-244	-238	-232	-159
Consumer	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	45,906	45,762	'	'
Allowance for loan losses	-353	-363	-334	-278
Other	'	'	'	'
Accounts Notes And Loans Receivable [Line Items]	'	'	'	'
Loans, gross	45	108	'	'
Allowance for loan losses	$0	$0	$0	$0

Loans_Net_and_Allowance_for_Lo4

Loans, Net and Allowance for Loan Losses-Summary of Activity in Allowance for Loan Losses by Loan Class (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	$13,960	$11,478	'
Provision for loan losses	1,253	1,030	'
Charge-offs	-399	-543	'
Recoveries	27	19	'
Balance at end of period	14,841	11,984	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	386	'	855
Collectively evaluated for impairment	14,455	'	13,105
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	14,841	11,984	'
Loans:	'	'	'
Individually evaluated for impairment	11,102	'	11,934
Collectively evaluated for impairment	1,867,764	'	1,697,449
Acquired with deteriorated credit quality	14,216	'	13,777
Ending balance	1,893,082	'	1,723,160
Commercial	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	2,401	2,377	'
Provision for loan losses	578	-280	'
Charge-offs	-363	0	'
Recoveries	4	4	'
Balance at end of period	2,620	2,101	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	53	'	313
Collectively evaluated for impairment	2,567	'	2,088
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	2,620	2,101	'
Loans:	'	'	'
Individually evaluated for impairment	251	'	501
Collectively evaluated for impairment	264,548	'	234,103
Acquired with deteriorated credit quality	5,809	'	6,574
Ending balance	270,608	'	241,178
Commercial Real Estate, Land and Land Development	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	7,872	4,924	'
Provision for loan losses	256	2,082	'
Charge-offs	-21	-531	'
Recoveries	10	3	'
Balance at end of period	8,117	6,478	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	272	'	504
Collectively evaluated for impairment	7,845	'	7,368
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	8,117	6,478	'
Loans:	'	'	'
Individually evaluated for impairment	7,562	'	8,013
Collectively evaluated for impairment	1,067,232	'	959,254
Acquired with deteriorated credit quality	6,348	'	6,489
Ending balance	1,081,142	'	973,756
Residential Real Estate	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	2,440	2,965	'
Provision for loan losses	-163	-548	'
Charge-offs	-1	0	'
Recoveries	2	3	'
Balance at end of period	2,278	2,420	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	40	'	14
Collectively evaluated for impairment	2,238	'	2,426
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	2,278	2,420	'
Loans:	'	'	'
Individually evaluated for impairment	3,232	'	3,182
Collectively evaluated for impairment	354,870	'	334,770
Acquired with deteriorated credit quality	2,050	'	702
Ending balance	360,152	'	338,654
Single-Family Interim Construction	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	577	523	'
Provision for loan losses	-42	-158	'
Charge-offs	0	0	'
Recoveries	1	0	'
Balance at end of period	536	365	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	536	'	577
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	536	365	'
Loans:	'	'	'
Individually evaluated for impairment	0	'	170
Collectively evaluated for impairment	93,587	'	82,974
Acquired with deteriorated credit quality	0	'	0
Ending balance	93,587	'	83,144
Agricultural	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	238	159	'
Provision for loan losses	6	73	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	244	232	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	244	'	238
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	244	232	'
Loans:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	41,642	'	40,558
Acquired with deteriorated credit quality	0	'	0
Ending balance	41,642	'	40,558
Consumer	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	363	278	'
Provision for loan losses	-6	59	'
Charge-offs	-14	-12	'
Recoveries	10	9	'
Balance at end of period	353	334	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	21	'	24
Collectively evaluated for impairment	332	'	339
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	353	334	'
Loans:	'	'	'
Individually evaluated for impairment	57	'	68
Collectively evaluated for impairment	45,840	'	45,682
Acquired with deteriorated credit quality	9	'	12
Ending balance	45,906	'	45,762
Other	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	0	0	'
Provision for loan losses	0	0	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	0	0	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	0	'	0
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	0	0	'
Loans:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	45	'	108
Acquired with deteriorated credit quality	0	'	0
Ending balance	45	'	108
Unallocated	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at the beginning of period	69	252	'
Provision for loan losses	624	-198	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	693	54	'
Allowance for losses:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	693	'	69
Loans acquired with deteriorated credit quality	0	'	0
Allowance for loan losses	693	54	'
Loans:	'	'	'
Individually evaluated for impairment	0	'	0
Collectively evaluated for impairment	0	'	0
Acquired with deteriorated credit quality	0	'	0
Ending balance	$0	'	$0

Loans_Net_and_Allowance_for_Lo5

Loans, Net and Allowance for Loan Losses-Summary of Non Performing Loans by Loan Class (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	$2,104	$2,675
Loans past due 90 days and still accruing	600	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	6,403	4,104
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	9,107	6,779
Commercial	'	'
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	52	357
Loans past due 90 days and still accruing	600	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	99	107
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	751	464
Commercial Real Estate, Land and Land Development	'	'
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	99	253
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	5,031	3,571
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	5,130	3,824
Residential Real Estate	'	'
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	1,918	1,852
Loans past due 90 days and still accruing	0	0
Troubled debt restructurings (not included in nonaccrual or loans past due and still accruing)	1,273	425
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	3,191	2,277
Single-Family Interim Construction	'	'
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	0	170
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	170
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
Consumer	'	'
Non Performing Loans [Line Items]	'	'
Nonaccrual loans	35	43
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	1
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest, Total	35	44
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

Loans_Net_and_Allowance_for_Lo6

Loans, Net and Allowance for Loan Losses- Impaired Loans by Loan Class (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	$2,590	'	$5,442
Impaired loans with no allowance for loan losses	8,512	'	6,492
Total	11,102	'	11,934
Unpaid principal balance of impaired loans	12,178	'	12,370
Allowance for loan losses on impaired loans	386	'	855
Average recorded investment in impaired loans	11,519	13,915	'
Interest income recognized on impaired loans	138	163	'
Commercial	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	93	'	401
Impaired loans with no allowance for loan losses	158	'	100
Total	251	'	501
Unpaid principal balance of impaired loans	252	'	501
Allowance for loan losses on impaired loans	53	'	313
Average recorded investment in impaired loans	376	774	'
Interest income recognized on impaired loans	3	9	'
Commercial Real Estate, Land and Land Development	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	2,362	'	3,866
Impaired loans with no allowance for loan losses	5,200	'	4,147
Total	7,562	'	8,013
Unpaid principal balance of impaired loans	8,591	'	8,408
Allowance for loan losses on impaired loans	272	'	504
Average recorded investment in impaired loans	7,788	9,572	'
Interest income recognized on impaired loans	107	106	'
Residential Real Estate	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	102	'	1,135
Impaired loans with no allowance for loan losses	3,130	'	2,047
Total	3,232	'	3,182
Unpaid principal balance of impaired loans	3,270	'	3,216
Allowance for loan losses on impaired loans	40	'	14
Average recorded investment in impaired loans	3,207	3,476	'
Interest income recognized on impaired loans	28	46	'
Single-Family Interim Construction	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	0	'	0
Impaired loans with no allowance for loan losses	0	'	170
Total	0	'	170
Unpaid principal balance of impaired loans	0	'	170
Allowance for loan losses on impaired loans	0	'	0
Average recorded investment in impaired loans	85	0	'
Interest income recognized on impaired loans	0	0	'
Agricultural	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	0	'	0
Impaired loans with no allowance for loan losses	0	'	0
Total	0	'	0
Unpaid principal balance of impaired loans	0	'	0
Allowance for loan losses on impaired loans	0	'	0
Average recorded investment in impaired loans	0	0	'
Interest income recognized on impaired loans	0	0	'
Consumer	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	33	'	40
Impaired loans with no allowance for loan losses	24	'	28
Total	57	'	68
Unpaid principal balance of impaired loans	65	'	75
Allowance for loan losses on impaired loans	21	'	24
Average recorded investment in impaired loans	63	93	'
Interest income recognized on impaired loans	0	2	'
Other	'	'	'
Recorded investment in impaired loans:	'	'	'
Impaired loans with an allowance for loan losses	0	'	0
Impaired loans with no allowance for loan losses	0	'	0
Total	0	'	0
Unpaid principal balance of impaired loans	0	'	0
Allowance for loan losses on impaired loans	0	'	0
Average recorded investment in impaired loans	0	0	'
Interest income recognized on impaired loans	$0	$0	'

Loans_Net_and_Allowance_for_Lo7

Loans, Net and Allowance for Loan Losses-Summary of Troubled Debt Restructurings (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	contract	contract
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	1	0
Pre-restructuring outstanding recorded investment	$700	$0
Post-restructuring outstanding recorded investment	700	0
Commercial	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	0	0
Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	1	0
Pre-restructuring outstanding recorded investment	700	0
Post-restructuring outstanding recorded investment	700	0
Residential Real Estate	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	0	0
Single-Family Interim Construction	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	0	0
Agricultural	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	0	0
Consumer	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	0	0
Other Loan	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts	0	0
Pre-restructuring outstanding recorded investment	0	0
Post-restructuring outstanding recorded investment	$0	$0

Loans_Net_and_Allowance_for_Lo8

Loans, Net and Allowance for Loan Losses-Aging of Past Due Loans by Loan Class (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	$1,931	$3,755
Loans 90 or More Past Due	881	2,204
Total Past Due Loans	2,812	5,959
Current Loans	1,890,270	1,717,201
Ending balance	1,893,082	1,723,160
Commercial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	455	257
Loans 90 or More Past Due	600	357
Total Past Due Loans	1,055	614
Current Loans	269,553	240,564
Ending balance	270,608	241,178
Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	357	2,076
Loans 90 or More Past Due	0	73
Total Past Due Loans	357	2,149
Current Loans	1,080,785	971,607
Ending balance	1,081,142	973,756
Residential Real Estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	878	1,322
Loans 90 or More Past Due	281	1,603
Total Past Due Loans	1,159	2,925
Current Loans	358,993	335,729
Ending balance	360,152	338,654
Single-Family Interim Construction	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	0	0
Loans 90 or More Past Due	0	170
Total Past Due Loans	0	170
Current Loans	93,587	82,974
Ending balance	93,587	83,144
Agricultural	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	119	3
Loans 90 or More Past Due	0	0
Total Past Due Loans	119	3
Current Loans	41,523	40,555
Ending balance	41,642	40,558
Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans 30-89 Days Past Due	122	97
Loans 90 or More Past Due	0	1
Total Past Due Loans	122	98
Current Loans	45,784	45,664
Ending balance	45,906	45,762
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	0
Total Past Due Loans	0	0
Current Loans	45	108
Ending balance	$45	$108

Loans_Net_and_Allowance_for_Lo9

Loans, Net and Allowance for Loan Losses-Summary of Loans by Credit Quality Indicator (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	$1,893,082	$1,723,160
Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	270,608	241,178
Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	1,081,142	973,756
Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	360,152	338,654
Single-Family Interim Construction	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	93,587	83,144
Agricultural	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	41,642	40,558
Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	45,906	45,762
Other Loan	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	45	108
Pass (Rating 1-4)	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	1,852,002	1,681,997
Pass (Rating 1-4) | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	259,802	231,080
Pass (Rating 1-4) | Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	1,061,991	952,863
Pass (Rating 1-4) | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	349,393	328,918
Pass (Rating 1-4) | Single-Family Interim Construction	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	93,587	83,144
Pass (Rating 1-4) | Agricultural	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	41,418	40,328
Pass (Rating 1-4) | Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	45,766	45,556
Pass (Rating 1-4) | Other Loan	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	45	108
Pass/ Watch	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	24,945	23,567
Pass/ Watch | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	9,367	7,199
Pass/ Watch | Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	8,907	10,697
Pass/ Watch | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	6,404	5,379
Pass/ Watch | Single-Family Interim Construction	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
Pass/ Watch | Agricultural	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	207	210
Pass/ Watch | Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	60	82
Pass/ Watch | Other Loan	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
OAEM	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	6,768	4,786
OAEM | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	1,099	1,311
OAEM | Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	5,359	2,982
OAEM | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	296	454
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	14	39
OAEM | Other Loan	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
Substandard	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	9,367	12,675
Substandard | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	340	1,453
Substandard | Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	4,885	7,214
Substandard | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	4,059	3,903
Substandard | Single-Family Interim Construction	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
Substandard | Agricultural	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	17	20
Substandard | Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	66	85
Substandard | Other Loan	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
Doubtful	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	135
Doubtful | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	135
Doubtful | Commercial Real Estate, Land and Land Development	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
Doubtful | Residential Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans, gross	0	0
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

Recovered_Sheet1

Loans, Net and Allowance for Loan Losses-Outstanding Balance and Related Carrying Amount of Purchased Impaired Loans (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Jan. 02, 2014	Nov. 30, 2013
In Thousands, unless otherwise specified			Live Oak Financial Corp	Collin Bank
Business Acquisition [Line Items]	'	'	'	'
Outstanding balance	$17,783	$15,768	$3,583	$11,897
Nonaccretable difference	'	'	-519	-1,810
Accretable yield	'	'	-182	-408
Carrying amount	$14,216	$13,777	$2,882	$9,679

Recovered_Sheet2

Loans, Net and Allowance for Loan Losses Loans, Net and Allowance for Loan Losses-Purchased Credit Impaired Loans in Consolidated Balance Sheet (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Outstanding balance	$17,783	$15,768
Carrying amount	$14,216	$13,777

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loss Contingencies [Line Items]	'	'
Financial instruments with off-balance sheet risk	$365,091	$367,695
Commitments to extend credit	'	'
Loss Contingencies [Line Items]	'	'
Financial instruments with off-balance sheet risk	362,808	365,575
Standby letters of credit	'	'
Loss Contingencies [Line Items]	'	'
Financial instruments with off-balance sheet risk	$2,283	$2,120

Commitments_and_Contingencies_2

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'	'
Rent expense	$198	$209

Repurchase_Agreements_and_Othe1

Repurchase Agreements and Other Borrowings - Note Payable (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Repurchase agreements	$4,535	$0
Securities pledged under repurchase agreements	5,480	'
Other borrowings, related parties	3,270	3,270
Subordinated Debt	'	'
Debt Instrument [Line Items]	'	'
Other borrowings, related parties	$7,730	$7,730

Income_Taxes_Tax_Expense_Detai

Income Taxes - Tax Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Income tax expense	$2,339	$0
Effective tax rates (percent)	32.80%	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Federal income tax at statutory rate (percent)	35.00%

Fair_Value_MeasurementsAssets_

Fair Value Measurements-Assets and Liabilities at Fair Value on Recurring Basis (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
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	$1,008	$3,513
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	1,008	3,513
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	90,238	94,415
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	90,238	94,415
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	37,454	36,615
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	37,454	36,615
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	2,072	2,052
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	2,072	2,052
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 pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available for sale measured on a recurring basis	73,767	57,443
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR | 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 pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR | 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	73,767	57,443
Residential pass-through securities guaranteed by FNMA, GNMA, FHLMC and FHR | 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

Fair_Value_MeasurementsConting

Fair Value Measurements-Contingent Consideration Related to Acquisition of Town Center Bank (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013
Contingent Consideration [Roll Forward]	'
Balance, beginning of period	$290
Settlements	0
Change in estimated payments to be made	0
Balance, end of period	$290

Fair_Value_MeasurementsAssets_1

Fair Value Measurements-Assets and Liabilities at Fair Value on Nonrecurring Basis (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Impaired loans | Assets Measured at Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, measured on a nonrecurring basis	$1,781	$1,514
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	1,781	1,514
Impaired loans | Fair Value, Gain Loss	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Period Ended Total Losses	78	497
Other real estate | Assets Measured at Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, measured on a nonrecurring basis	0	2,449
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	0	2,449
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	$537

Fair_Value_MeasurementsCarryin

Fair Value Measurements-Carrying Amount and Estimated Fair Value of Financial Instruments (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial assets:	'	'
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	$204,539	$194,038
Financial liabilities:	'	'
Repurchase agreements	4,535	0
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	365,091	367,695
Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Financial assets:	'	'
Cash and cash equivalents	97,715	93,054
Certificates of deposit held in other banks	'	0
Securities available for sale (amortized cost of $204,761 and $196,689, 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
Repurchase agreements	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	'	0
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	204,539	194,038
Loans held for sale	2,191	3,383
Loans, net	1,876,164	1,710,228
FHLB of Dallas stock and other restricted stock	9,012	9,494
Accrued interest receivable	5,355	4,713
Financial liabilities:	'	'
Deposits	1,892,774	1,712,654
Accrued interest payable	930	948
FHLB advances	177,857	189,092
Repurchase agreements	4,535	'
Notes payable	'	0
Other borrowings	7,927	8,061
Junior subordinated debentures	18,123	18,099
Contingent consideration	'	0
Significant Unobservable Inputs (Level 3)	'	'
Financial assets:	'	'
Cash and cash equivalents	0	0
Certificates of deposit held in other banks	'	0
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	0	0
Loans held for sale	0	0
Loans, net	2,204	4,587
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
Repurchase agreements	0	'
Notes payable	'	0
Other borrowings	0	0
Junior subordinated debentures	0	0
Contingent consideration	'	0
Assets Measured at Fair Value	'	'
Financial assets:	'	'
Cash and cash equivalents	97,715	93,054
Certificates of deposit held in other banks	'	0
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	204,539	194,038
Loans held for sale	2,191	3,383
Loans, net	1,878,368	1,714,815
FHLB of Dallas stock and other restricted stock	9,012	9,494
Accrued interest receivable	5,355	4,713
Financial liabilities:	'	'
Deposits	1,892,774	1,712,654
Accrued interest payable	930	948
FHLB advances	177,857	189,092
Repurchase agreements	4,535	'
Notes payable	'	0
Other borrowings	7,927	8,061
Junior subordinated debentures	18,123	18,099
Contingent consideration	'	0
Carrying Amount	'	'
Financial assets:	'	'
Cash and cash equivalents	97,715	93,054
Certificates of deposit held in other banks	'	0
Securities available for sale (amortized cost of $204,761 and $196,689, respectively)	204,539	194,038
Loans held for sale	2,191	3,383
Loans, net	1,878,241	1,709,200
FHLB of Dallas stock and other restricted stock	9,012	9,494
Accrued interest receivable	5,355	4,713
Financial liabilities:	'	'
Deposits	1,890,677	1,710,319
Accrued interest payable	930	948
FHLB advances	174,462	187,484
Repurchase agreements	4,535	'
Notes payable	'	0
Other borrowings	7,730	7,730
Junior subordinated debentures	18,147	18,147
Contingent consideration	'	0
Commitments to extend credit	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	362,808	365,575
Commitments to extend credit | Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Commitments to extend credit | Significant Other Observable Inputs (Level 2)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Commitments to extend credit | Significant Unobservable Inputs (Level 3)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Commitments to extend credit | Assets Measured at Fair Value	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Commitments to extend credit | Carrying Amount	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Standby letters of credit	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	2,283	2,120
Standby letters of credit | Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Standby letters of credit | Significant Other Observable Inputs (Level 2)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Standby letters of credit | Significant Unobservable Inputs (Level 3)	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Standby letters of credit | Assets Measured at Fair Value	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	0	0
Standby letters of credit | Carrying Amount	'	'
Fair Value Off Balance Sheet [Abstract]	'	'
Financial instruments with off-balance sheet risk	$0	$0

Stock_Awards_and_Stock_Warrant2

Stock Awards and Stock Warrants Stock Awards and Stock Warrants (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Number of Shares	'	'
Nonvested shares, beginning balance (shares)	306,524	208,608
Granted during the period (shares)	27,183	0
Vested during the period (shares)	-92,000	-16,317
Nonvested shares, ending balance (shares)	241,707	192,291
Weighted Average Grant Date Fair Value	'	'
Nonvested shares, beginning balance (usd per share)	$22.75	$17.07
Granted during the period (usd per share)	$50.80	$0
Vested during the period (usd per share)	$17.92	$11.94
Nonvested shares, ending balance (usd per share)	$27.75	$18.05

Stock_Awards_and_Stock_Warrant3

Stock Awards and Stock Warrants - Future Vesting Schedule of Nonvested Shares (Detail)	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	241,707
First year	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	56,730
Second year	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	42,050
Third year	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	59,439
Fourth year	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	60,704
Fifth year	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Nonvested shares	22,784

Stock_Awards_and_Stock_Warrant4

Stock Awards and Stock Warrants - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 30, 2013	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock vesting period	'	'	'	'5 years
Compensation expense	'	$390	$182	'
Estimated future compensation expense	'	4,981	'	'
Period for recognition	'	'3 years 2 months 1 day	'	'
Fair value of common stock awards vested	'	4,869	357	'
Excess tax benefit on restricted stock vested	'	1,022	0	'
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	'	'	'
2013 Equity Incentive Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Shares reserved for future issuance (shares)	'	800,000	'	'
Minimum | 2013 Equity Incentive Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock vesting period	'	'3 years	'	'
Maximum | 2013 Equity Incentive Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock vesting period	'	'5 years	'	'

Regulatory_MattersActual_Capit

Regulatory Matters-Actual Capital Amounts and Ratios (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Consolidated	'	'
Total capital to risk weighted assets:	'	'
Actual Amount	$244,296	$234,794
Actual Ratio (percent)	13.08%	13.83%
Minimum Required for Capital Adequacy Purposes Amount	149,384	135,801
Minimum Required for Capital Adequacy Purposes Ratio (percent)	8.00%	8.00%
Tier I capital to risk weighted assets:	'	'
Actual Amount	223,271	214,650
Actual Ratio (percent)	11.96%	12.64%
Minimum Required for Capital Adequacy Purposes Amount	74,692	67,901
Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Tier I capital to average assets:	'	'
Actual Amount	223,271	214,650
Actual Ratio (percent)	9.77%	10.71%
Minimum Required for Capital Adequacy Purposes Amount	91,382	80,204
Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
Bank	'	'
Total capital to risk weighted assets:	'	'
Actual Amount	230,602	212,656
Actual Ratio (percent)	12.37%	12.54%
Minimum Required for Capital Adequacy Purposes Amount	149,174	135,648
Minimum Required for Capital Adequacy Purposes Ratio (percent)	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	186,467	169,560
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	10.00%	10.00%
Tier I capital to risk weighted assets:	'	'
Actual Amount	215,761	198,696
Actual Ratio (percent)	11.57%	11.72%
Minimum Required for Capital Adequacy Purposes Amount	74,587	67,824
Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	111,880	101,736
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	6.00%	6.00%
Tier I capital to average assets:	'	'
Actual Amount	215,761	198,696
Actual Ratio (percent)	9.52%	9.97%
Minimum Required for Capital Adequacy Purposes Amount	90,649	79,710
Minimum Required for Capital Adequacy Purposes Ratio (percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$113,311	$99,637
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (percent)	5.00%	5.00%

Business_Combination_Additiona

Business Combination - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Jan. 02, 2014	Mar. 31, 2014	Mar. 31, 2013	Jan. 02, 2014
				Live Oak Financial Corp	Live Oak Financial Corp	Live Oak Financial Corp	Live Oak Financial Corp
				branch			Non-Credit Impaired Loans
Business Acquisition [Line Items]	'	'	'	'	'	'	'
Percentage of outstanding stock acquired (percent)	'	'	'	100.00%	'	'	'
Number of branches acquired	'	'	'	1	'	'	'
Stock issued for acquisition of bank (in shares)	'	'	'	235,594	'	'	'
Cash paid in the transaction	$10,000	$0	'	$10,000	$10,000	$0	'
Goodwill acquired	42,575	'	34,704	7,122	7,122	0	'
Acquisition related expenses	476	137	'	'	54	'	'
Acquired loans, fair value	'	'	'	'	'	'	68,256
Loans	'	'	'	'	'	'	68,351
Contractual amount over fair value	'	'	'	'	'	'	$95

Business_Combination_Estimated

Business Combination - Estimated Fair Values Of Assets Acquired And Liabilities Assumed (Detail) (USD $)	3 Months Ended			0 Months Ended	3 Months Ended					12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Jan. 02, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
				Live Oak Financial Corp	Live Oak Financial Corp	Live Oak Financial Corp	Collin Bank	Purchase Price Allocation Adjustment	Purchase Price Allocation Adjustment	Scenario, Previously Reported
								Collin Bank	Collin Bank	Collin Bank
Assets of acquired bank:	'	'	'	'	'	'	'	'	'	'
Cash and cash equivalents	'	'	'	$32,246	$32,246	$0	$22,792	$0	'	$22,792
Securities available for sale	'	'	'	16,740	16,740	0	62,373	0	'	62,373
Loans	'	'	'	71,138	71,138	0	72,283	-328	0	72,611
Premises and equipment	'	'	'	2,600	2,600	0	141	0	'	141
Investment in stock	'	'	'	'	'	'	1,156	0	'	1,156
Goodwill	42,575	'	34,704	7,122	7,122	0	6,711	749	'	5,962
Core deposit intangibles	'	'	'	882	882	0	582	-18	0	600
Deferred tax asset	'	'	'	'	'	'	1,494	109	0	1,385
Other assets	'	'	'	230	230	0	785	10	0	775
Total assets	'	'	'	130,958	130,958	0	168,317	522	0	167,795
Liabilities of acquired bank:	'	'	'	'	'	'	'	'	'	'
Deposits	'	'	'	104,960	104,960	0	111,669	505	0	111,164
FHLB Advances	'	'	'	'	'	'	26,000	0	'	26,000
Repurchase agreements	'	'	'	3,733	3,733	0	'	'	'	'
Other liabilities	'	'	'	565	565	0	375	17	0	358
Total liabilities	'	'	'	109,258	109,258	0	138,044	522	0	137,522
Common stock issued in transaction	'	'	'	11,700	11,700	0	11,861	0	'	11,861
Cash paid in transaction	$10,000	$0	'	$10,000	$10,000	$0	$18,412	$0	'	$18,412

Subsequent_Events_Details

Subsequent Events (Details) (USD $)

3 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

5-May-14

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Apr. 15, 2014

Mar. 31, 2014

Dec. 31, 2013

Apr. 15, 2014

Apr. 15, 2014

Apr. 15, 2014

Subsequent Event

BOH Holdings, Inc.

BOH Holdings, Inc.

BOH Holdings, Inc.

BOH Holdings, Inc.

BOH Holdings, Inc.

BOH Holdings, Inc.

Senior Non-Cumulative Perpetual Preferred Stock, Series A

BOH Series C Preferred Stock

Houston Area

Subsequent Event

Subsequent Event

Subsequent Event

BOH Holdings, Inc.

BOH Holdings, Inc.

branch

Subsequent Event

Subsequent Event

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of outstanding stock acquired (percent)

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

Number of branches

'

'

'

'

'

'

'

'

'

'

'

'

6

Stock issued for acquisition of bank (in shares)

'

'

'

'

'

'

'

3,615,886

'

'

23,938.35

'

'

Equity interest received, number of shares

'

'

'

'

'

'

'

'

'

'

'

23,938.35

'

Cash paid to shareholders of acquired bank

$10,000

$0

'

'

'

'

'

$33,998

'

'

'

'

'

Goodwill

42,575

'

34,704

'

'

'

'

165,885

'

'

'

'

'

Acquisition expense, including legal

476

137

'

'

'

'

'

'

205

592

'

'

'

Pro forma net income (loss)

'

'

'

'

7,244

6,257

26,959

'

'

'

'

'

'

Pro forma revenue

'

'

'

'

$38,007

$33,637

$139,164

'

'

'

'

'

'

Dividends declared (per share)

'

'

'

$0.06

'

'

'

'

'

'

'

'

'

Subsequent_Events_Schedule_of_

Subsequent Events - Schedule of Assets Identified and Liabilities Assumed (Details) (USD $)	3 Months Ended			0 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Apr. 15, 2014	Apr. 15, 2014	Apr. 15, 2014
				Subsequent Event	Common Stock $.01 Par Value 100 million shares authorized	Senior Non-Cumulative Perpetual Preferred Stock, Series A
				BOH Holdings, Inc.	Subsequent Event	Subsequent Event
					BOH Holdings, Inc.	BOH Holdings, Inc.
Noncash assets acquired	'	'	'	'	'	'
Cash and cash equivalents	'	'	'	$135,525	'	'
Securities available for sale	'	'	'	58,978	'	'
Loans	'	'	'	786,160	'	'
Premises and equipment	'	'	'	7,464	'	'
Goodwill	42,575	'	34,704	165,885	'	'
Core deposit intangibles	'	'	'	6,610	'	'
Other assets	'	'	'	28,118	'	'
Total assets	'	'	'	1,188,740	'	'
Liabilities of acquired bank:	'	'	'	'	'	'
Deposits	'	'	'	820,752	'	'
FHLB Advances	'	'	'	95,000	'	'
Other liabilities	'	'	'	6,235	'	'
Total liabilities	'	'	'	921,987	'	'
Stock issued in transaction	'	'	'	'	208,817	23,938
Cash paid to shareholders of acquired bank	$10,000	$0	'	$33,998	'	'
Common stock issued (in usd per share)	'	'	'	'	$57.75	'