CenterState Bank (CSFL) 10-Q 4 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'CenterState Banks, Inc.	'
Entity Central Index Key	'0001102266	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	30,112,475

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$21,216	$19,160
Federal funds sold and Federal Reserve Bank deposits	85,600	117,588
Cash and cash equivalents	106,816	136,748
Trading securities, at fair value	398	5,048
Investment securities available for sale, at fair value	456,555	425,758
Loans held for sale, at lower of cost or fair value	1,317	2,709
Loans covered by FDIC loss share agreements	242,891	296,295
Loans, excluding those covered by FDIC loss share agreements	1,215,681	1,139,568
Allowance for loan losses	-21,321	-26,682
Net Loans	1,437,251	1,409,181
Bank premises and equipment, net	97,289	97,954
Accrued interest receivable	6,206	6,100
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	8,179	9,749
Goodwill	44,924	44,924
Core deposit intangible	5,196	5,944
Trust intangible	1,209	1,363
Bank owned life insurance	48,961	47,957
Other repossessed real estate owned covered by FDIC loss share agreements	21,633	26,783
Other repossessed real estate owned	4,804	6,875
FDIC indemnification asset	81,603	119,289
Deferred income tax asset, net	3,392	'
Prepaid expense and other assets	10,288	16,858
TOTAL ASSETS	2,336,021	2,363,240
Deposits:	'	'
Demand - non-interest bearing	562,027	519,510
Demand - interest bearing	452,583	452,961
Savings and money market accounts	547,137	549,457
Time deposits	400,208	475,304
Total deposits	1,961,955	1,997,232
Securities sold under agreement to repurchase	22,150	18,792
Federal funds purchased	45,356	38,932
Corporate debentures	16,990	16,970
Accrued interest payable	378	579
Deferred income tax liability, net	'	1,892
Payables and accrued expenses	16,451	15,312
Total liabilities	2,063,280	2,089,709
Stockholders' equity:	'	'
Common stock, $.01 par value: 100,000,000 shares authorized; 30,112,475 and 30,079,767 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	301	301
Additional paid-in capital	229,478	228,952
Retained earnings	46,520	36,979
Accumulated other comprehensive (loss) income	-3,558	7,299
Total stockholders' equity	272,741	273,531
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$2,336,021	$2,363,240

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	30,112,475	30,079,767
Common stock, shares outstanding	30,112,475	30,079,767

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Earnings and Comprehensive Income (USD $)	3 Months Ended			9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Interest income:	'	'		'		'
Loans	$22,963	$20,445		$66,188		$61,094
Investment securities available for sale:	'	'		'		'
Taxable	2,560	2,653		7,045		9,086
Tax-exempt	362	361		1,091		1,061
Federal funds sold and other	149	149		575		444
Total interest income	26,034	23,608		74,899		71,685
Interest expense:	'	'		'		'
Deposits	1,246	1,748		3,959		5,983
Securities sold under agreement to repurchase	21	23		60		68
Federal funds purchased	5	6		16		22
Federal Home Loan Bank advances and other borrowings	'	4		'		201
Corporate debentures	152	160		452		481
Total interest expenses	1,424	1,941		4,487		6,755
Net interest income	24,610	21,667		70,412		64,930
Provision for loan losses	-1,273	2,425		-259		7,051
Net interest income after loan loss provision	25,883	19,242		70,671		57,879
Non interest income:	'	'		'		'
Income from correspondent banking and bond sales division	2,909	8,606		13,953		26,356
Other correspondent banking related revenue	862	847		2,432		2,158
Service charges on deposit accounts	2,244	1,695		6,144		4,773
Debit, prepaid, ATM and merchant card related fees	1,399	1,160		4,026		3,381
Wealth management related revenue	1,179	1,000		3,379		2,818
FDIC indemnification income	3,333	2,199		5,357		3,992
FDIC indemnification asset amortization	-3,836	-671		-9,307		-1,556
Bank owned life insurance income	327	360		1,004		1,081
Other service charges and fees	190	464		723		1,062
Net gain on sale of securities available for sale	'	675		1,038		2,003
Bargain purchase gain	'	'		'		453
Total other income	8,607	16,335		28,749		46,521
Non interest expense:	'	'		'		'
Salaries, wages and employee benefits	14,345	17,706		45,819		54,217
Occupancy expense	1,924	2,246		5,758		6,788
Depreciation of premises and equipment	1,364	1,465		4,316		4,148
Supplies, stationary and printing	268	261		841		879
Marketing expenses	722	716		1,836		1,909
Data processing expense	1,026	890		2,822		2,857
Legal, audit and other professional fees	1,176	551		2,803		1,772
Core deposit intangible (CDI) amortization	246	294		749		871
Postage and delivery	266	282		818		869
ATM and debit card related expenses	435	312		1,374		830
Bank regulatory expenses	588	623		1,804		1,981
Loss on sale of repossessed real estate ("OREO")	1,852	153		2,414		654
Valuation write down of repossessed real estate ("OREO")	3,184	1,735		5,851		2,825
Loss on repossessed assets other than real estate	39	37		385		175
Foreclosure related expenses	680	1,919		2,260		3,979
Merger and acquisition related expenses	183	177		183		2,659
Other expenses	1,552	2,339		4,280		6,037
Total other expenses	29,850	31,706		84,313		93,450
Income before provision for income taxes	4,640	3,871		15,107		10,950
Provision for income taxes	1,531	1,229		4,664		3,281
Net income (loss)	3,109	2,642		10,443		7,669
Other comprehensive income, net of tax:	'	'		'		'
Unrealized securities holding (loss) gain, net of income taxes	-1,608	2,443		-10,219		5,172
Less: reclassified adjustments for gain included in net income, net of income taxes, of $0, $400, $254, and $754, respectively	'	-421	[1]	-638	[1]	-1,249	[1]
Net unrealized (loss) gain on available for sale securities, net of income taxes	-1,608	2,022		-10,857		3,923
Total comprehensive income (loss)	$1,501	$4,664		($414)		$11,592
Earnings per share:	'	'		'		'
Basic	$0.10	$0.09		$0.35		$0.25
Diluted	$0.10	$0.09		$0.35		$0.25
Common shares used in the calculation of earnings per share:	'	'		'		'
Basic	30,109,728	30,077,933		30,099,509		30,072,008
Diluted	30,243,873	30,142,167		30,216,028		30,136,680
[1]	Amounts are included in net gain on sale of securities available for sale in total non interest income. Provision for income taxes associated with the reclassification adjustment for the three and nine month periods ended September 30, 2013 and 2012 was $0, $400, $254 and $754, respectively.

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Earnings and Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]	'	'	'	'
Reclassifications of gain included in net income, income taxes	$0	$400	$254	$754

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands, except Share data
Balances at beginning at Dec. 31, 2011	$262,633	$301	$228,342	$28,277	$5,713
Balances at beginning, shares at Dec. 31, 2011	'	30,055,499	'	'	'
Net income	7,669	'	'	7,669	'
Change in unrealized holding gain on available for sale securities, net of deferred income taxes	3,923	'	'	'	3,923
Dividends paid - common ($0.03 per share)	-902	'	'	-902	'
Stock grants issued	247	'	247	'	'
Stock grants issued, shares	'	24,268	'	'	'
Stock based compensation expense	279	'	279	'	'
Balances at ending at Sep. 30, 2012	273,849	301	228,868	35,044	9,636
Balances at ending, shares at Sep. 30, 2012	'	30,079,767	'	'	'
Balances at beginning at Dec. 31, 2012	273,531	301	228,952	36,979	7,299
Balances at beginning, shares at Dec. 31, 2012	30,079,767	30,079,767	'	'	'
Net income	10,443	'	'	10,443	'
Change in unrealized holding gain on available for sale securities, net of deferred income taxes	-10,857	'	'	'	-10,857
Dividends paid - common ($0.03 per share)	-902	'	'	-902	'
Stock grants issued	300	'	300	'	'
Stock grants issued, shares	'	32,708	'	'	'
Stock based compensation expense	226	'	226	'	'
Balances at ending at Sep. 30, 2013	$272,741	$301	$229,478	$46,520	($3,558)
Balances at ending, shares at Sep. 30, 2013	30,112,475	30,112,475	'	'	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Change in unrealized holding gain on available for sale securities, deferred income tax benefit	$6,818	$2,558
Dividends paid - common, per share	$0.03	$0.03
Retained Earnings [Member]	'	'
Dividends paid - common, per share	$0.03	$0.03
Accumulated Other Comprehensive Income (Loss) [Member]	'	'
Change in unrealized holding gain on available for sale securities, deferred income tax benefit	$6,818	$2,558

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income	$10,443	$7,669
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan losses	-259	7,051
Depreciation of premises and equipment	4,316	4,148
Accretion of purchase accounting adjustments	-24,785	-18,752
Net amortization of investment securities	5,353	6,602
Net deferred loan origination fees	-593	-117
Gain on sale of securities available for sale	-1,038	-2,003
Trading securities revenue	-212	-534
Purchases of trading securities	-171,530	-272,130
Proceeds from sale of trading securities	176,392	272,664
Repossessed real estate owned valuation write down	5,851	2,825
Loss on sale of repossessed real estate owned	2,414	654
Repossessed assets other than real estate valuation write down	65	107
Loss on sale of repossessed assets other than real estate	320	68
Gain on sale of loans held for sale	-255	-172
Loans originated and held for sale	-15,499	-11,744
Proceeds from sale of loans held for sale	17,146	13,950
Loss (gain) on disposal of and or sale of fixed assets	6	-247
Impairment of bank property held for sale	0	614
Gain on disposal of bank property held for sale	-31	'
Deferred income taxes	1,354	2,761
Stock based compensation expense	436	478
Bank owned life insurance income	-1,004	-1,081
Bargain purchase gain from acquisition	'	-453
Net cash from changes in:	'	'
Net changes in accrued interest receivable, prepaid expenses, and other assets	6,600	-2,005
Net change in accrued interest payable, accrued expense, and other liabilities	1,028	2,988
Net cash provided by operating activities	16,518	13,341
Cash flows from investing activities:	'	'
Purchases of investment securities available for sale	-31,133	-71,513
Purchases of mortgage backed securities available for sale	-183,002	-99,503
Purchases of FHLB and FRB stock	'	-855
Proceeds from maturities of investment securities available for sale	165	204
Proceeds from called investment securities available for sale	8,670	75,610
Proceeds from pay-downs of mortgage backed securities available for sale	83,801	94,171
Proceeds from sales of investment securities available for sale	31,201	23,261
Proceeds from sales of mortgage backed securities available for sale	37,691	117,277
Proceeds from sales of FHLB and FRB stock	1,570	4,835
Net (increase) decrease in loans	-25,264	37,535
Cash received from FDIC loss sharing agreements	36,227	17,139
Purchases of premises and equipment, net	-3,670	-7,676
Proceeds from sale of repossessed real estate	22,356	17,385
Proceeds from sale of fixed assets	13	1,154
Proceeds from sale of bank property held for sale	931	'
Purchase of bank owned life insurance	'	-10,000
Net cash from bank acquisitions	'	81,061
Net cash provided by/(used in) investing activities	-20,444	280,085
Cash flows from financing activities:	'	'
Net decrease in deposits	-34,886	-338,827
Net increase in securities sold under agreement to repurchase	3,358	6,389
Net increase (decrease) in federal funds purchased	6,424	-8,050
Dividends paid	-902	-902
Net cash used in financing activities	-26,006	-341,390
Net decrease in cash and cash equivalents	-29,932	-47,964
Cash and cash equivalents, beginning of period	136,748	151,095
Cash and cash equivalents, end of period	106,816	103,131
Transfer of loans to other real estate owned	23,400	16,843
Cash paid during the period for:	'	'
Interest	5,059	8,206
Income taxes	$1,745	$9

Nature_of_Operations_and_Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Nature of Operations and Basis of Presentation	'
	NOTE 1:	Nature of Operations and basis of presentation
	Our consolidated financial statements include the accounts of CenterState Banks, Inc. (the “Parent Company,” “Company” or “CSFL”), and our wholly owned subsidiary bank, CenterState Bank of Florida, N.A. (“CenterState”), and our non bank subsidiary, R4ALL, Inc. Our subsidiary bank operates through 55 full service banking locations in 18 counties throughout Florida, providing traditional deposit and lending products and services to its commercial and retail customers. R4ALL, Inc. is a separate non bank subsidiary of CSFL. Its purpose is to purchase troubled loans from our subsidiary bank and manage their eventual disposition.
	In addition, we also operate a correspondent banking and bond sales division. The division is integrated with and part of our subsidiary bank located in Winter Haven, Florida, although the majority of our bond salesmen, traders and operational personnel are physically housed in leased facilities located in Birmingham, Alabama, Atlanta, Georgia and Winston Salem, North Carolina. The business lines of this division are primarily divided into three inter-related revenue generating activities. The first, and largest, revenue generator is commissions earned on fixed income security sales. The second category includes correspondent bank deposits (i.e. federal funds purchased) and correspondent bank checking account deposits. The third revenue generating category includes fees from safe-keeping activities, bond accounting services for correspondents, asset/liability consulting related activities, international wires, and other clearing and corporate checking account services. The customer base includes small to medium size financial institutions primarily located in the Southeastern United States.
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial statements and with the instructions to Form 10-Q. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. These statements should be read in conjunction with the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2012. In our opinion, all adjustments, consisting primarily of normal recurring adjustments, necessary for a fair presentation of the results for the interim periods have been made. The results of operations of the three month and nine month periods ended September 30, 2013 are not necessarily indicative of the results expected for the full year.

Common_Stock_Outstanding_and_E

Common Stock Outstanding and Earnings Per Share Data	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Common Stock Outstanding and Earnings Per Share Data	'
	NOTE 2:	Common stock outstanding and earnings per share data
	Basic earnings per share is based on the weighted average number of common shares outstanding during the periods. Diluted earnings per share includes the weighted average number of common shares outstanding during the periods and the further dilution from stock options using the treasury method. Average stock options outstanding that were anti dilutive during the three month and nine month periods ending September 30, 2013 and 2012 were 1,040,121, 1,116,739, 1,165,761 and 1,143,888, respectively. The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the periods presented.
			Three months ended September 30,				Nine months ended September 30,
			2013		2012		2013		2012
	Numerator for basic and diluted earnings per share:
	Net income		$	3,109	$	2,642	$	10,443	$	7,669
	Denominator:
	Denominator for basic earnings per share
	- weighted-average shares			30,109,728		30,077,933		30,099,509		30,072,008
	Effect of dilutive securities:
	Stock options and stock grants			134,145		64,234		116,519		64,672
	Denominator for diluted earnings per share
	- adjusted weighted-average shares			30,243,873		30,142,167		30,216,028		30,136,680
	Basic earnings per share		$	0.1	$	0.09	$	0.35	$	0.25
	Diluted earnings per share		$	0.1	$	0.09	$	0.35	$	0.25

Fair_Value

Fair Value	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value	'
	NOTE 3:	Fair value
	Generally accepted accounting principles establish a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:
	Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date.
	Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing and asset or liability.
	The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs).
	The fair values of trading securities are determined as follows: (1) for those securities that have traded prior to the date of the consolidated balance sheet but have not settled (date of sale) until after such date, the sales price is used as the fair value; and, (2) for those securities which have not traded as of the date of the consolidated balance sheet, the fair value was determined by broker price indications of similar or same securities.
	The fair value of derivatives is based on valuation models using observable market data as of the measurement date (Level 2). Assets and liabilities measured at fair value on a recurring basis are summarized below.
					Fair value measurements using
			Carrying		Quoted prices in		Significant		Significant
			value		active markets for		other		unobservable
					identical assets		observable		inputs
					(Level 1)		inputs		(Level 3)
							(Level 2)
	at September 30, 2013
	Assets:
	Trading securities		$	398		—	$	398		—
	Available for sale securities
	U.S. government sponsored entities and agencies			5		—		5		—
	Mortgage backed securities			415,134		—		415,134		—
	Municipal securities			41,416		—		41,416		—
	Interest rate swap derivatives			712		—		712		—
	Liabilities:			809		—		809		—
	Interest rate swap derivatives
	at December 31, 2012
	Assets:
	Trading securities		$	5,048		—	$	5,048		—
	Available for sale securities
	U.S. government sponsored entities and agencies			7,546		—		7,546		—
	Mortgage backed securities			373,190		—		373,190		—
	Municipal securities			45,022		—		45,022		—
	Interest rate swap derivatives			1,131		—		1,131		—
	Liabilities:
	Interest rate swap derivatives			2,014		—		2,014		—
	The fair value of impaired loans with specific valuation allowance for loan losses and other real estate owned is based on recent real estate appraisals. For residential real estate impaired loans and other real estate owned, appraised values are based on the comparative sales approach. For commercial and commercial real estate impaired loans and other real estate owned, appraisers may use either a single valuation approach or a combination of approaches such as comparative sales, cost or the income approach. A significant unobservable input in the income approach is the estimated income capitalization rate for a given piece of collateral. At September 30, 2013, the range of capitalization rates utilized to determine the fair value of the underlying collateral ranged from 8% to 11%. Adjustments to appraisals may be made by the appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of a given asset over time. As such, the fair value of impaired loans and other real estate owned are considered a Level 3 in the fair value hierarchy.
	Assets and liabilities measured at fair value on a non-recurring basis are summarized below.
					Fair value measurements using
			Carrying		Quoted prices in		Significant		Significant
			value		active markets for		other		unobservable
					identical assets		observable		inputs
					(Level 1)		inputs		(Level 3)
							(Level 2)
	at September 30, 2013
	Assets:
	Impaired loans
	Residential real estate		$	2,896		—		—	$	2,896
	Commercial real estate			6,174		—		—		6,174
	Land, land development and construction			961		—		—		961
	Commercial			1,310		—		—		1,310
	Consumer			158		—		—		158
	Other real estate owned
	Residential real estate		$	18		—		—	$	18
	Commercial real estate			3,664		—		—		3,664
	Land, land development and construction			4,427		—		—		4,427
	Bank owned real estate held for sale			1,582		—		—		1,582
	at December 31, 2012
	Assets:
	Impaired loans
	Residential real estate		$	837		—		—	$	837
	Commercial real estate			8,379		—		—		8,379
	Land, land development and construction			1,103		—		—		1,103
	Commercial			905		—		—		905
	Consumer			84		—		—		84
Other real estate owned
Residential real estate		$	582		—		—	$	582
Commercial real estate			5,933		—		—		5,933
Land, land development and construction			4,445		—		—		4,445
Bank owned real estate held for sale			2,482		—		—		2,482
Impaired loans with specific valuation allowances and/or partial charge-offs had a recorded investment of $12,083 with a valuation allowance of $584, at September 30, 2013, and a recorded investment of $11,678, with a valuation allowance of $370, at December 31, 2012. The Company recorded a provision for loan loss expense of $383 and $781on these loans during the three and nine month periods ending September 30, 2013, respectively.
Other real estate owned had a decline in fair value of $3,184 and $5,851 during the three and nine month period ending September 30, 2013, respectively, and $1,735 and $2,825 during the three and nine month period ending September 30, 2012, respectively. Changes in fair value were recorded directly to current earnings through non interest expense.
Bank owned real estate held for sale represents certain branch office buildings which the Company has closed and consolidated to other existing branches. The real estate was transferred out of the Bank Premises and Equipment category into bank owned property held for sale and included in Prepaid and Other Assets category in the Company’s Condensed Consolidated Balance Sheet during 2012. The real estate was transferred at the lower of amortized cost or fair value less estimated costs to sell. During the current year, one of the properties was sold. The net proceeds from the sale was $931 resulting in a gain on the sale of $31, which was included in other non interest income in the Company’s Condensed Consolidated Statements of Earnings and Comprehensive Income. Impairment charges recognized during the three and nine month periods ending September 30, 2013 and 2012 were $0, $0, $449 and $614, respectively.
Fair Value of Financial Instruments
The methods and assumptions, not previously presented, used to estimate fair value are described as follows:
Cash and Cash Equivalents: The carrying amounts of cash and cash equivalents approximate fair values and are classified as Level 1.
FHLB and FRB Stock: It is not practical to determine the fair value of FHLB and FRB stock due to restrictions placed on their transferability.
Loans held for sale: The fair value of loans held for sale is estimated based upon binding contracts from third party investors resulting in a Level 2 classification.
Loans, net: Fair values of loans, excluding loans held for sale, are estimated as follows: For variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values resulting in a Level 3 classification. Fair values for other 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 resulting in a Level 3 classification. Impaired loans are valued as described previously. The methods utilized to estimate the fair value of loans do not necessarily represent an exit price.
FDIC Indemnification Asset: It is not practical to determine the fair value of the FDIC indemnification asset due to restrictions placed on its transferability.
Accrued Interest Receivable: The carrying amount of accrued interest receivable approximates fair value and is classified as Level 3.
Deposits: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, savings, and money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amount) resulting in Level 1 classification. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flows calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification.
Short-term Borrowings: The carrying amounts of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings, generally maturing within ninety days, approximate their fair values resulting in a Level 2 classification.
Corporate Debentures: The fair values of the Company’s corporate debentures are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 2 classification.
Accrued Interest Payable: The carrying amount of accrued interest payable approximates fair value resulting in a Level 2 classification.
Off-balance Sheet Instruments: The fair value of off-balance-sheet items is not considered material.
The following table presents the carry amounts and estimated fair values of the Company’s financial instruments:
				Fair value measurements
at September 30, 2013		Carrying amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents		$	106,816	$	106,816	$	—	$	—	$	106,816
Trading securities			398		—		398		—		398
Investment securities available for sale			456,555		—		456,555		—		456,555
FHLB and FRB stock			8,179		—		—		—		n/a
Loans held for sale			1,317		—		1,317		—		1,317
Loans, less allowance for loan losses of $21,321			1,437,251		—		—		1,438,680		1,438,680
FDIC indemnification asset			81,603		—		—		—		n/a
Interest rate swap derivatives			712		—		712		—		712
Accrued interest receivable			6,206		—		—		6,206		6,206
Financial liabilities:
Deposits- without stated maturities		$	1,561,747	$	1,561,747	$	—	$	—	$	1,561,747
Deposits- with stated maturities			400,208		—		404,692		—		404,692
Securities sold under agreement to repurchase			22,150		—		22,150		—		22,150
Federal funds purchased			45,356		—		45,356		—		45,356
Corporate debentures			16,990		—		11,011		—		11,011
Interest rate swap derivatives			809		—		809		—		809
Accrued interest payable			378		—		378		—		378
				Fair value measurements
at December 31, 2012		Carrying amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents		$	136,748	$	136,748	$	—	$	—	$	136,748
Trading securities			5,048		—		5,048		—		5,048
Investment securities available for sale			425,758		—		425,758		—		425,758
FHLB and FRB stock			9,749		—		—		—		n/a
Loans held for sale			2,709		—		2,709		—		2,709
Loans, less allowance for loan losses of $26,682			1,409,181		—		—		1,324,630		1,324,630
FDIC indemnification asset			119,289		—		—		—		n/a
Interest rate swap derivatives			1,131		—		1,131		—		—
Accrued interest receivable			6,100		—		—		6,100		6,100
Financial liabilities:
Deposits- without stated maturities		$	1,521,928	$	1,521,928	$	—	$	—	$	1,521,928
Deposits- with stated maturities			475,304		—		483,220		—		483,220
Securities sold under agreement to repurchase			18,792		—		18,792		—		18,792
Federal funds purchased			38,932		—		38,932		—		38,932
Corporate debentures			16,970		—		—		8,477		8,477
Interest rate swap derivatives			2,014		—		2,014		—		2,014
Accrued interest payable			579		—		579		—		579

Reportable_Segments

Reportable Segments	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Reportable Segments	'
	NOTE 4:	Reportable segments
	The Company’s reportable segments represent the distinct product lines the Company offers and are viewed separately for strategic planning purposes by management. The table below is a reconciliation of the reportable segment revenues, expenses, and profit to the Company’s consolidated total for the three and nine month periods ending September 30, 2013 and 2012.
	Three month period ending September 30, 2013
			Commercial			Correspondent			Corporate			Elimination			Total
			and retail			banking and			overhead			entries
			banking			bond sales			and
						division			administration
	Interest income		$	25,304		$	730		$	—					$	26,034
	Interest expense			(1,267	)		(5	)		(152	)					(1,424	)
	Net interest income (expense)			24,037			725			(152	)					24,610
	Recovery of prior loan loss provision			1,273			—			—						1,273
	Non interest income			4,836			3,771			—						8,607
	Non interest expense			(24,620	)		(4,377	)		(853	)					(29,850	)
	Net income (loss) before taxes			5,526			119			(1,005	)					4,640
	Income tax (provision) benefit			(1,867	)		(46	)		382						(1,531	)
	Net income (loss)		$	3,359		$	73		($	623	)				$	3,109
	Total assets		$	2,194,300		$	138,395		$	294,425		($	291,099	)	$	2,336,021
	Nine month period ending September 30, 2013
			Commercial			Correspondent			Corporate			Elimination			Total
			and retail			banking and			overhead			entries
			banking			bond sales			and
						division			administration
	Interest income		$	72,777		$	2,122		$	—					$	74,899
	Interest expense			(4,019	)		(16	)		(452	)					(4,487	)
	Net interest income (expense)			68,758			2,106			(452	)					70,412
	Recovery of prior loan loss provision			259			—			—						259
	Non interest income			12,364			16,385			—						28,749
	Non interest expense			(65,917	)		(15,815	)		(2,581	)					(84,313	)
	Net income (loss) before taxes			15,464			2,676			(3,033	)					15,107
	Income tax (provision) benefit			(4,933	)		(1,032	)		1,301						(4,664	)
	Net income (loss)		$	10,531		$	1,644		($	1,732	)				$	10,443
	Total assets		$	2,194,300		$	138,395		$	294,425		($	291,099	)	$	2,336,021
	Three month period ending September 30, 2012
			Commercial			Correspondent			Corporate			Elimination			Total
			and retail			banking and			overhead			entries
			banking			bond sales			and
						division			administration
	Interest income		$	22,676		$	932		$	—					$	23,608
	Interest expense			(1,770	)		(7	)		(164	)					(1,941	)
	Net interest income			20,906			925			(164	)					21,667
	Provision for loan losses			(2,425	)		—			—						(2,425	)
	Non interest income			6,882			9,453			—						16,335
	Non interest expense			(23,704	)		(7,235	)		(767	)					(31,706	)
	Net income before taxes			1,659			3,143			(931	)					3,871
	Income tax (provision) benefit			(389	)		(1,183	)		343						(1,229	)
	Net income (loss)		$	1,270		$	1,960		$	(588	)				$	2,642
	Total assets		$	2,206,116		$	166,231		$	295,062		$	(289,794	)	$	2,377,615
	Nine month period ending September 30, 2012
			Commercial			Correspondent			Corporate			Elimination			Total
			and retail			banking and			overhead			entries
			banking			bond sales			and
						division			administration
	Interest income		$	68,518		$	3,167		$	—					$	71,685
	Interest expense			(6,053	)		(22	)		(680	)					(6,755	)
	Net interest income			62,465			3,145			(680	)					64,930
	Provision for loan losses			(7,051	)		—			—						(7,051	)
	Non interest income			18,004			28,514			3						46,521
	Non interest expense			(69,011	)		(22,099	)		(2,340	)					(93,450	)
	Net income before taxes			4,407			9,560			(3,017	)					10,950
	Income tax (provision) benefit			(795	)		(3,598	)		1,112						(3,281	)
	Net income (loss)		$	3,612		$	5,962		$	(1,905	)				$	7,669
	Total assets		$	2,206,116		$	166,231		$	295,062		$	(289,794	)	$	2,377,615
	Commercial and retail banking: The Company’s primary business is commercial and retail banking. Currently, the Company operates through its subsidiary bank and a non bank subsidiary, R4ALL, with 55 full service banking locations in 18 counties throughout Florida providing traditional deposit and lending products and services to its commercial and retail customers.
Correspondent banking and bond sales division: Operating as a division of our subsidiary bank, its primary revenue generating activities are as follows: 1) the first, and largest, revenue generator is commissions earned on fixed income security sales; 2) the second category includes spread income earned on correspondent bank deposits (i.e. federal funds purchased) and service fees on correspondent bank checking accounts; and, 3) the third revenue generating category, includes fees from safe-keeping activities, bond accounting services for correspondents, asset/liability consulting related activities, international wires, and other clearing and corporate checking account services. The customer base includes small to medium size financial institutions primarily located in Southeastern United States.
Corporate overhead and administration: Corporate overhead and administration is comprised primarily of compensation and benefits for certain members of management, interest on parent company debt, office occupancy and depreciation of parent company facilities, certain merger related costs and other expenses.

Investment_Securities_Availabl

Investment Securities Available for Sale	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities Available for Sale	'
	NOTE 5:	Investment Securities Available for Sale
	All of the mortgage backed securities listed below were issued by U.S. government sponsored entities and agencies, primarily Fannie Mae, Freddie Mac and Ginnie Mae, institutions which the government has affirmed its commitment to support. The fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:
			September 30, 2013
			Amortized		Gross		Gross		Fair
			Cost		Unrealized		Unrealized		Value
					Gains		Losses
	Obligations of U.S. government sponsored entities and agencies		$	5	$	—	$	—	$	5
	Mortgage backed securities			421,248		4,865		10,979		415,134
	Municipal securities			41,094		934		612		41,416
	Total		$	462,347	$	5,799	$	11,591	$	456,555
			December 31, 2012
			Amortized		Gross		Gross		Fair
			Cost		Unrealized		Unrealized		Value
					Gains		Losses
	Obligations of U.S. government sponsored entities and agencies		$	7,465	$	81	$	—	$	7,546
	Mortgage backed securities			364,014		9,247		71		373,190
	Municipal securities			42,570		2,504		52		45,022
	Total		$	414,049	$	11,832	$	123	$	425,758
	The cost of securities sold is determined using the specific identification method. Sales of available for sale securities were as follows:
	For the nine months ended:		Sept 30,		Sept 30,
			2013		2012
	Proceeds		$	68,892	$	140,537
	Gross gains			1,038		2,285
	Gross losses			—		282
	The tax provision related to these net realized gains was $400 and $754, respectively.
	The fair value of available for sale securities at September 30, 2013 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately.
			Fair		Amortized
			Value		Cost
	Investment securities available for sale
	Due in one year or less		$	625	$	625
	Due after one year through five years			1,929		1,800
	Due after five years through ten years			11,594		11,335
	Due after ten years through thirty years			27,273		27,339
	Mortgage backed securities			415,134		421,248
			$	456,555	$	462,347
	Securities pledged at September 30, 2013 and December 31, 2012 had a carrying amount (estimated fair value) of $108,871 and $108,737 respectively. These securities were pledged primarily to secure public deposits and repurchase agreements.
	At September 30, 2013 and December 31, 2012, there were no holdings of securities of any one issuer, other than mortgage backed securities issued by U.S. Government sponsored entities and agencies, in an amount greater than 10% of stockholders’ equity.
	The following tables show the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2013 and December 31, 2012.
			September 30, 2013
			Less than 12 months				12 months or more				Total
			Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
					Losses				Losses				Losses
	Obligations of U.S. government sponsored entities and agencies		$	—	$	—	$	—	$	—	$	—	$	—
	Mortgage backed securities			235,856		10,979		—		—		235,856		10,979
	Municipal securities			11,591		612		—		—		11,591		612
	Total temporarily impaired securities		$	247,447	$	11,591	$	—	$	—	$	247,447	$	11,591
			December 31, 2012
			Less than 12 months				12 months or more				Total
			Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
					Losses				Losses				Losses
	Obligations of U.S. government sponsored entities and agencies		$	—	$	—	$	—	$	—	$	—	$	—
	Mortgage backed securities			30,840		71		—		—		30,840		71
	Municipal securities			2,180		52		—		—		2,180		52
	Total temporarily impaired securities		$	33,020	$	123	$	—	$	—	$	33,020	$	123
	At September 30, 2013, 100% of the mortgage-backed securities held by the Company were issued by U.S. government-sponsored entities and agencies, primarily Fannie Mae, Freddie Mac, and Ginnie Mae, institutions which the government has affirmed its commitment to support. Because the decline in fair value is attributable to changes in interest rates and illiquidity, and not credit quality, and because the Company does not have the intent to sell these mortgage-backed securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be other-than-temporarily impaired at September 30, 2013.
	Unrealized losses on municipal securities have not been recognized into income because the issuers bonds are of high quality, and because management does not intend to sell these investments or more likely than not will not be required to sell these investments before their anticipated recovery. The fair value is expected to recover as the securities approach maturity.

Loans

Loans	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Loans	'
	NOTE 6:	Loans
	The following table sets forth information concerning the loan portfolio by collateral types as of the dates indicated.
			Sept 30, 2013			31-Dec-12
	Loans not covered by FDIC loss share agreements
	Real estate loans
	Residential		$	449,224		$	428,554
	Commercial			529,172			480,494
	Land, development and construction			60,375			55,474
	Total real estate			1,038,771			964,522
	Commercial			126,451			124,225
	Consumer and other loans (note 1)			1,259			2,732
	Consumer and other loans			49,065			48,547
	Loans before unearned fees and deferred cost			1,215,546			1,140,026
	Net unearned fees and costs			135			(458	)
	Allowance for loan losses for noncovered loans			(19,265	)		(24,033	)
	Net loans not covered by FDIC loss share agreements			1,196,416			1,115,535
	Loans covered by FDIC loss share agreements
	Real estate loans
	Residential			124,027			142,480
	Commercial			109,285			134,413
	Land, development and construction			5,673			13,259
	Total real estate			238,985			290,152
	Commercial			3,906			6,143
				242,891			296,295
	Allowance for loan losses for covered loans			(2,056	)		(2,649	)
	Net loans covered by FDIC loss share agreements			240,835			293,646
	Total loans, net of allowance for loan losses		$	1,437,251		$	1,409,181
	note 1:	Consumer loans acquired pursuant to three FDIC assisted transactions of failed financial institutions during the third quarter of 2010 and two in the first quarter of 2012. These loans are not covered by an FDIC loss share agreement. The loans are being accounted for pursuant to ASC Topic 310-30.
	The tables below set forth the activity in the allowance for loan losses for the periods presented.
			Loans not			Loans			Total
			covered by			covered by
			FDIC loss			FDIC loss
			share			share
			agreements			agreements
	Three months ended September 30, 2013
	Balance at beginning of period		$	21,800		$	2,020		$	23,820
	Loans charged-off			(1,570	)		—			(1,570	)
	Recoveries of loans previously charged-off			344			—			344
	Net charge-offs			(1,226	)		—			(1,226	)
	(Recovery) provision for loan losses			(1,309	)		36			(1,273	)
	Balance at end of period		$	19,265		$	2,056		$	21,321
	Nine months ended September 30, 2013
	Balance at beginning of period		$	24,033		$	2,649		$	26,682
	Loans charged-off			(5,404	)		(515	)		(5,919	)
	Recoveries of loans previously charged-off			817			—			817
	Net charge-offs			(4,587	)		(515	)		(5,102	)
	(Recovery) provision for loan losses			(181	)		(78	)		(259	)
	Balance at end of period		$	19,265		$	2,056		$	21,321
	Three months ended September 30, 2012
	Balance at beginning of period		$	23,634		$	1,549		$	25,183
	Loans charged-off			(2,245	)		—			(2,245	)
	Recoveries of loans previously charged-off			978			—			978
	Net charge-offs			(1,267	)		—			(1,267	)
	Provision for loan losses			1,652			773			2,425
	Balance at end of period		$	24,019		$	2,322		$	26,341
	Nine months ended September 30, 2012
	Balance at beginning of period		$	27,585		$	359		$	27,944
	Loans charged-off			(10,393	)		—			(10,393	)
	Recoveries of loans previously charged-off			1,739			—			1,739
	Net charge-offs			(8,654	)		—			(8,654	)
	Provision for loan losses			5,088			1,963			7,051
	Balance at end of period		$	24,019		$	2,322		$	26,341
	The following tables present the activity in the allowance for loan losses for loans not covered by FDIC loss share agreements by portfolio segment for the periods presented.
		Real Estate Loans
		Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
Loans not covered by FDIC loss share agreements:
Three months ended September 30, 2013
Beginning of the period		$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
Charge-offs			(1,147	)		(53	)		(127	)		(53	)		(190	)		(1,570	)
Recoveries			163			42			41			22			76			344
Provision for loan losses			844			(1,431	)		(644	)		(146	)		68			(1,309	)
Balance at end of period		$	9,651		$	4,584		$	3,341		$	887		$	802		$	19,265
Nine months ended September 30, 2013
Beginning of the period		$	6,831		$	8,272		$	6,211		$	1,745		$	974		$	24,033
Charge-offs			(3,328	)		(1,127	)		(310	)		(112	)		(527	)		(5,404	)
Recoveries			396			82			161			43			135			817
Provision for loan losses			5,752			(2,643	)		(2,721	)		(789	)		220			(181	)
Balance at end of period		$	9,651		$	4,584		$	3,341		$	887		$	802		$	19,265
Three months ended September 30, 2012
Beginning of the period		$	4,860		$	8,091		$	7,868		$	1,638		$	1,177		$	23,634
Charge-offs			(1,456	)		(179	)		(385	)		(10	)		(215	)		(2,245	)
Recoveries			182			411			338			4			43			978
Provision for loan losses			1,896			263			(719	)		54			158			1,652
Balance at end of period		$	5,482		$	8,586		$	7,102		$	1,686		$	1,163		$	24,019
Nine months ended September 30, 2012
Beginning of the period		$	6,700		$	8,825		$	9,098		$	1,984		$	978		$	27,585
Charge-offs			(3,233	)		(1,758	)		(4,593	)		(71	)		(738	)		(10,393	)
Recoveries			334			834			423			15			133			1,739
Provision for loan losses			1,681			685			2,174			(242	)		790			5,088
Balance at end of period		$	5,482		$	8,586		$	7,102		$	1,686		$	1,163		$	24,019
The following tables present the activity in the allowance for loan losses for loans covered by FDIC loss share agreements by portfolio segment for the periods presented.
		Real Estate Loans
		Residential			Commercial			Land,			Comm. &			Total
								develop.,			industrial
								constr.
Loans covered by FDIC loss share agreements:
Three months ended September 30, 2013
Beginning of the period		$	—		$	1,577		$	130		$	313		$	2,020
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			(190	)		(8	)		234			36
Balance at end of period		$	—		$	1,387		$	122		$	547		$	2,056
Nine months ended September 30, 2013
Beginning of the period		$	—		$	2,335		$	—		$	314		$	2,649
Charge-offs			—			(515	)		—			—			(515	)
Recoveries			—			—			—			—			—
Provision for loan losses			—			(433	)		122			233			(78	)
Balance at end of period		$	—		$	1,387		$	122		$	547		$	2,056
Three months ended September 30, 2012
Beginning of the period		$	82		$	1,455		$	—		$	12		$	1,549
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			780			—			(7	)		773
Balance at end of period		$	82		$	2,235		$	—		$	5		$	2,322
Nine months ended September 30, 2012
Beginning of the period		$	82		$	223		$	40		$	14		$	359
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			2,012			(40	)		(9	)		1,963
Balance at end of period		$	82		$	2,235		$	—		$	5		$	2,322
The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2013 and December 31, 2012. Accrued interest receivable and unearned loan fees and costs are not included in the recorded investment because they are not material.
		Real Estate Loans
As of September 30, 2013		Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
Allowance for loan losses:
Ending allowance balance attributable to loans:
Individually evaluated for impairment		$	429		$	263		$	57		$	8		$	27		$	784
Collectively evaluated for impairment			9,222			4,321			3,284			879			775			18,481
Acquired with deteriorated credit quality			—			1,387			122			547			—			2,056
Total ending allowance balance		$	9,651		$	5,971		$	3,463		$	1,434		$	802		$	21,321
Loans:
Loans individually evaluated for impairment		$	9,054		$	27,246		$	1,391		$	1,831		$	358		$	39,880
Loans collectively evaluated for impairment			440,170			501,926			58,984			124,620			48,707			1,174,407
Loans acquired with deteriorated credit quality			124,027			109,285			5,673			3,906			1,259			244,150
Total ending loan balances		$	573,251		$	638,457		$	66,048		$	130,357		$	50,324		$	1,458,437
		Real Estate Loans
As of December 31, 2012		Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
Allowance for loan losses:
Ending allowance balance attributable to loans:
Individually evaluated for impairment		$	610		$	277		$	107		$	1		$	27		$	1,022
Collectively evaluated for impairment			6,221			7,995			6,104			1,744			947			23,011
Acquired with deteriorated credit quality			—			2,335			—			314			—			2,649
Total ending allowance balance		$	6,831		$	10,607		$	6,211		$	2,059		$	974		$	26,682
Loans:
Loans individually evaluated for impairment		$	9,936		$	32,860		$	1,520		$	3,470		$	393		$	48,179
Loans collectively evaluated for impairment			418,618			447,634			53,954			120,755			48,154			1,089,115
Loans acquired with deteriorated credit quality			142,480			134,413			13,259			6,143			2,732			299,027
Total ending loan balance		$	571,034		$	614,907		$	68,733		$	130,368		$	51,279		$	1,436,321
The table below summarizes impaired loan data for the periods presented.
		Sept 30,			Dec 31,
		2013			2012
Impaired loans with a specific valuation allowance		$	7,992		$	10,744
Impaired loans without a specific valuation allowance			31,888			37,435
Total impaired loans		$	39,880		$	48,179
Amount of allowance for loan losses allocated to impaired loans		$	784		$	1,022
Performing TDRs		$	11,604		$	8,841
Non performing TDRs, included in NPLs			4,207			5,819
Total TDRs (TDRs are required to be included in impaired loans)		$	15,811		$	14,660
Impaired loans that are not TDRs			24,069			33,519
Total impaired loans		$	39,880		$	48,179
In this current real estate environment it has become more common to restructure or modify the terms of certain loans under certain conditions (i.e. troubled debt restructure or “TDRs”). In those circumstances it may be beneficial to restructure the terms of a loan and work with the borrower for the benefit of both parties, versus forcing the property into foreclosure and having to dispose of it in an unfavorable real estate market. When we have modified the terms of a loan, we usually either reduce the monthly payment and/or interest rate for generally twelve to twenty-four months. We have not forgiven any material principal amounts on any loan modifications to date. We have approximately $15,811 of TDRs. Of this amount $11,604 are performing pursuant to their modified terms, and $4,207 are not performing and have been placed on non accrual status and included in our non performing loans (“NPLs”).
TDRs as of September 30, 2013 and December 31, 2012 quantified by loan type classified separately as accrual (performing loans) and non-accrual (non performing loans) are presented in the tables below.
As of September 30, 2013		Accruing			Non Accrual			Total
Real estate loans:
Residential		$	6,936		$	1,546		$	8,482
Commercial			3,538			2,496			6,034
Land, development, construction			429			—			429
Total real estate loans			10,903			4,042			14,945
Commercial			469			40			509
Consumer and other			232			125			357
Total TDRs		$	11,604		$	4,207		$	15,811
As of December 31, 2012		Accruing			Non-Accrual			Total
Real estate loans:
Residential		$	6,446		$	1,778		$	8,224
Commercial			1,589			3,701			5,290
Land, development, construction			202			231			433
Total real estate loans			8,237			5,710			13,947
Commercial			315			5			320
Consumer and other			289			104			393
Total TDRs		$	8,841		$	5,819		$	14,660
Our policy is to return non accrual TDR loans to accrual status when all the principal and interest amounts contractually due, pursuant to its modified terms, are brought current and future payments are reasonably assured. Our policy also considers the payment history of the borrower, but is not dependent upon a specific number of payments. The Company recorded a provision for loan loss expense of $426 and $748 and partial charge offs of $219 and $445 on the TDR loans described above during the three and nine month period ending September 30, 2013.
Loans are modified to minimize loan losses when we believe the modification will improve the borrower’s financial condition and ability to repay the loan. We typically do not forgive principal. We generally either reduce interest rates or decrease monthly payments for a temporary period of time and those reductions of cash flows are capitalized into the loan balance. We may also extend maturities, convert balloon loans to longer term amortizing loans, or vice versa, or change interest rates between variable and fixed rate. Each borrower and situation is unique and we try to accommodate the borrower and minimize the Company’s potential losses. Approximately 73% of our TDRs are current pursuant to their modified terms, and about $4,207, or approximately 27% of our total TDRs are not performing pursuant to their modified terms. There does not appear to be any significant difference in success rates with one type of concession versus another.
The following table presents loans by class modified and for which there was a payment default within twelve months following the modification during the period ending September 30, 2013 and December 31, 2012.
		Period ending						Year ending
		September 30, 2013						December 31, 2012
		Number			Recorded			Number			Recorded
		of loans			investment			of loans			investment
Residential			3		$	562			10		$	758
Commercial real estate			5			1,662			4			2,567
Land, development, construction			—			—			4			156
Commercial and Industrial			1			25			—			—
Consumer and other			1			18			1			45
Total			10		$	2,267			19		$	3,526
The Company recorded a provision for loan loss expense of $172 and $332 and partial charge offs of $59 and $176 on TDR loans that subsequently defaulted as described above during the three and nine month period ending September 30, 2013, respectively.
The following tables present loans individually evaluated for impairment by class of loans as of September 30, 2013 and December 31, 2012. The recorded investment is less than the unpaid principal balance due to partial charge-offs.
As of September 30, 2013		Unpaid			Recorded			Allowance for
		principal			investment			loan losses
		balance						allocated
With no related allowance recorded:
Residential real estate		$	5,539		$	5,448		$	—
Commercial real estate			25,749			23,892			—
Land, development, construction			1,760			911			—
Commercial and industrial			1,728			1,631			—
Consumer, other			6			6			—
With an allowance recorded:
Residential real estate			3,910			3,606			429
Commercial real estate			3,533			3,354			263
Land, development, construction			494			480			57
Commercial and industrial			245			200			8
Consumer, other			364			352			27
Total		$	43,328		$	39,880		$	784
As of December 31, 2012		Unpaid			Recorded			Allowance for
		principal			investment			loan losses
		balance						allocated
With no related allowance recorded:
Residential real estate		$	1,712		$	1,712		$	—
Commercial real estate			33,789			31,171			—
Land, development, construction			2,042			1,087			—
Commercial and industrial			3,556			3,465			—
With an allowance recorded:
Residential real estate			8,624			8,224			610
Commercial real estate			1,742			1,689			277
Land, development, construction			664			433			107
Commercial and industrial			5			5			1
Consumer, other			395			393			27
Total		$	52,529		$	48,179		$	1,022
Three month period ending September, 30, 2013		Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
Real estate loans:
Residential		$	8,829		$	78		$	—
Commercial			26,960			295			—
Land, development, construction			1,436			2			—
Total real estate loans			37,225			375			—
Commercial and industrial			1,710			12			—
Consumer and other loans			351			3			—
Total		$	39,286		$	390		$	—
Nine month period ending September 30, 2013		Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
Real estate loans:
Residential		$	9,014		$	222		$	—
Commercial			28,134			840			—
Land, development, construction			1,423			10			—
Total real estate loans			38,571			1,072			—
Commercial and industrial			1,984			28			—
Consumer and other loans			369			8			—
Total		$	40,924		$	1,108		$	—
Three month period ending September, 30, 2012		Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
Real estate loans:
Residential		$	10,289		$	78		$	—
Commercial			29,900			285			—
Land, development, construction			2,531			4			—
Total real estate loans			42,720			367			—
Commercial and industrial			3,306			34			—
Consumer and other loans			427			3			—
Total		$	46,453		$	404		$	—
Nine month period ending September 30, 2012		Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
Real estate loans:
Residential		$	10,131		$	215		$	—
Commercial			29,756			946			—
Land, development, construction			4,599			19			—
Total real estate loans			44,486			1,180			—
Commercial and industrial			4,432			80			—
Consumer and other loans			455			13			—
Total		$	49,373		$	1,273		$	—
Nonperforming loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans.
Nonperforming loans were as follows:		Sept 30, 2013			Dec 31, 2012
Non accrual loans		$	21,104		$	25,448
Loans past due over 90 days and still accruing interest			35			293
Total non performing loans		$	21,139		$	25,741
The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans as of September 30, 2013 and December 31, 2012, excluding loans acquired from the FDIC with evidence of credit deterioration and covered by FDIC loss share agreements:
As of September 30, 2013		Nonaccrual			Loans past due
					over 90 days
					still accruing
Residential real estate		$	10,882		$	—
Commercial real estate			7,263			—
Land, development, construction			1,247			—
Commercial			1,290			—
Consumer, other			422			35
Total		$	21,104		$	35
As of December 31, 2012		Nonaccrual			Loans past due
					over 90 days
					still accruing
Residential real estate		$	9,993		$	—
Commercial real estate			11,459			—
Land, development, construction			2,032			—
Commercial			1,650			—
Consumer, other			314			293
Total		$	25,448		$	293
The following table presents the aging of the recorded investment in past due loans as of September 30, 2013 and December 31, 2012, excluding loans acquired from the FDIC with evidence of credit deterioration and covered by FDIC loss share agreements:
		Accruing Loans
As of September 30, 2013		Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
					days past			days past			than 90			Due			Past Due			Loans
					due			due			days past
											due
Residential real estate		$	449,224		$	3,136		$	1,623		$	—		$	4,759		$	433,583		$	10,882
Commercial real estate			529,172			2,642			342			—			2,984			518,925			7,263
Land/dev/construction			60,375			109			618			—			727			58,401			1,247
Commercial			126,451			264			69			—			333			124,828			1,290
Consumer			50,324			209			149			35			393			49,509			422
		$	1,215,546		$	6,360		$	2,801		$	35		$	9,196		$	1,185,246		$	21,104
		Accruing Loans
As of December 31, 2012		Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
					days past			days past			than 90			Due			Past Due			Loans
					due			due			days past
											due
Residential real estate		$	428,554		$	1,632		$	677		$	—		$	2,309		$	416,252		$	9,993
Commercial real estate			480,494			1,663			1,147			—			2,810			466,225			11,459
Land/dev/construction			55,474			115			624			—			739			52,703			2,032
Commercial			124,225			203			416			—			619			121,956			1,650
Consumer			51,279			456			489			293			1,238			49,727			314
		$	1,140,026		$	4,069		$	3,353		$	293		$	7,715			1,106,863		$	25,448
Credit Quality Indicators:
The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis includes loans with an outstanding balance greater than $500 that are non-homogeneous loans, such as commercial, commercial real estate, land, land development and construction loans. This analysis is performed on at least an annual basis. The Company uses the following definitions for risk ratings:
Special Mention: Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date.
Substandard: Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected.
Doubtful: Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.
Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. Loans listed as not rated are either less than $500 or are included in groups of homogeneous loans. As of September 30, 2013 and December 31, 2012, and based on the most recent analysis performed, the risk category of loans by class of loans, excluding loans with evidence of deterioration of credit quality purchased from the FDIC and covered by FDIC loss share agreements, is as follows:
		As of September 30, 2013
Loan Category		Pass			Special			Substandard			Doubtful
					Mention
Residential real estate		$	420,235		$	6,511		$	22,478		$	—
Commercial real estate			435,312			59,217			34,643			—
Land/dev/construction			46,689			10,765			2,921			—
Commercial			117,529			4,825			4,097			—
Consumer			48,970			554			800			—
		$	1,068,735		$	81,872		$	64,939		$	—
		As of December 31, 2012
Loan Category		Pass			Special			Substandard			Doubtful
					Mention
Residential real estate		$	400,244		$	4,797		$	23,513		$	—
Commercial real estate			394,238			44,933			41,323			—
Land/dev/construction			39,650			11,994			3,830			—
Commercial			114,067			3,978			6,180			—
Consumer			49,894			613			772			—
		$	998,093		$	66,315		$	75,618		$	—
The Company considers the performance of the loan portfolio and its impact on the allowance for loan losses. For residential and consumer loan classes, the Company also evaluates credit quality based on the aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in residential and consumer loans, excluding loans covered by FDIC loss share agreements, based on payment activity as of September 30, 2013:
		Residential			Consumer
Performing		$	438,342		$	49,867
Nonperforming			10,882			457
Total		$	449,224		$	50,324
Purchased Credit Impaired Loans:
Income recognized on loans we purchased from the FDIC is recognized pursuant to ASC Topic 310-30. A portion of the fair value discount has been ascribed as an accretable yield that is accreted into interest income over the estimated remaining life of the loans. The remaining non-accretable difference represents cash flows not expected to be collected.
The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and carrying value of the loans as of September 30, 2013 and December 31, 2012. Contractually required principal and interest payments have been adjusted for estimated prepayments.
		Sept 30, 2013			Dec 31, 2012
Contractually required principal and interest		$	416,565		$	534,989
Non-accretable difference			(71,810	)		(142,855	)
Cash flows expected to be collected			344,755			392,134
Accretable yield			(100,605	)		(93,107	)
Carrying value of acquired loans		$	244,150		$	299,027
Allowance for loan losses			(2,056	)		(2,649	)
Carrying value less allowance for loan losses		$	242,094		$	296,378
We adjusted our estimates of future expected losses, cash flows and renewal assumptions during the current quarter. These adjustments resulted in an increase in expected cash flows and accretable yield, and a decrease in the non-accretable difference. We reclassified approximately $10,894 and $30,811 from non-accretable difference to accretable yield during the three and nine month period ending September 30, 2013, respectively, to reflect our adjusted estimates of future expected cash flows. The table below summarizes the changes in total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and carrying value of the loans during the three and nine month period ending September 30, 2013 and 2012.
Activity during the three month period ending September 30, 2013		June 30,			income			all other			Sept 30,
		2013			accretion			adjustments			2013
Contractually required principal and interest		$	449,146					$	(32,581	)	$	416,565
Non-accretable difference			(90,060	)					18,250			(71,810	)
Cash flows expected to be collected			359,086						(14,331	)		344,755
Accretable yield			(99,407	)		8,988			(10,186	)		(100,605	)
Carry value of acquired loans		$	259,679		$	8,988		$	(24,517	)	$	244,150
Activity during the nine month period ending September 30, 2013		Dec 31,			income			all other			Sept 30,
		2012			accretion			adjustments			2013
Contractually required principal and interest		$	534,989					$	(118,424	)	$	416,565
Non-accretable difference			(142,855	)					71,045			(71,810	)
Cash flows expected to be collected			392,134						(47,379	)		344,755
Accretable yield			(93,107	)		24,835			(32,333	)		(100,605	)
Carry value of acquired loans		$	299,027		$	24,835		$	(79,712	)	$	244,150
Activity during the three month period ending September 30, 2012		June 30,			Effect of			income			all other			Sept 30,
		2012			acquisitions			accretion			adjustments			2012
Contractually required principal and interest		$	594,439								$	(17,945	)	$	576,494
Non-accretable difference			(164,756	)								5,415			(159,341	)
Cash flows expected to be collected			429,683									(12,530	)		417,153
Accretable yield			(100,286	)					6,208			(11,334	)		(105,412	)
Carry value of acquired loans		$	329,397		$	—		$	6,208		$	(23,864	)	$	311,741
Activity during the nine month period ending September 30, 2012		Dec 31,			Effect of			income			all other			Sept 30,
		2011			acquisitions			accretion			adjustments			2012
Contractually required principal and interest		$	291,531		$	363,130					$	(78,167	)	$	576,494
Non-accretable difference			(51,536	)		(125,630	)					17,825			(159,341	)
Cash flows expected to be collected			239,995			237,500						(60,342	)		417,153
Accretable yield			(74,552	)		(32,975	)		17,955			(15,840	)		(105,412	)
Carry value of acquired loans		$	165,443		$	204,525		$	17,955		$	(76,182	)	$	311,741

FDIC_Indemnification_Asset

FDIC Indemnification Asset	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
FDIC Indemnification Asset	'
	NOTE 7:	FDIC indemnification asset
	The FDIC Indemnification Asset represents the estimated amounts due from the FDIC pursuant to the Loss Share Agreements related to the acquisition of the three failed banks acquired in 2010 and the acquisition of two failed banks in 2012. The activity in the FDIC loss share indemnification asset is as follows:
			Nine month			Twelve month
			period ended			period ended
			Sept 30, 2013			31-Dec-12
	Beginning of the year		$	119,289		$	50,642
	Effect of acquisitions			—			85,088
	Amortization, net			(9,307	)		(3,096	)
	Indemnification income - ORE			5,420			4,185
	Indemnification of foreclosure expense			2,491			2,425
	Proceeds from FDIC			(36,227	)		(21,787	)
	(Recovery) impairment of loan pool			(63	)		1,832
	Period end balance		$	81,603		$	119,289
	Impairment of loan pools
	When a loan pool (with loss share) is impaired, the impairment expense is included in provision for loan losses, and 80% of that loss is recognized as income from FDIC reimbursement, and included in this line item. During the nine month period ended September 30, 2013, the estimated amount of impairment declined, which resulted in a reversal of $63 of income previously recognized.
	Indemnification Revenue
	Indemnification Revenue represents approximately 80% of the cost incurred pursuant to the repossession process and losses incurred on the sale of OREO, or writedown of OREO values to current fair value. These costs are reimbursable from the FDIC.
	Amortization, net
	On the date of an FDIC acquisition, the Company estimates the amount and the timing of expected future losses that will be covered by the FDIC loss sharing agreements. The FDIC indemnification asset is initially recorded as the discounted value of the reimbursement of losses from the FDIC. Discount accretion is recognized over the estimated period of losses, and the Company updates its estimate of future losses and the timing of the losses each quarter. To the extent management estimates that future losses are less than initial estimate of future losses, management adjusts its estimates of future expected reimbursements and any decrease in the expected future reimbursements is amortized over the shorter of the loss share period or the life of the related loan by amortization in this line item. Based upon the most recent estimate of future losses, the Company expects less reimbursements from the FDIC and is amortizing the estimated reduction as described in the previous sentence.
	Indemnification of foreclosure expense
	Indemnification of foreclosure expense represents approximately 80% of the foreclosure related expenses incurred and reimbursable from the FDIC. Foreclosure expense is included in non interest expense. The amount of the reimbursable portion of the expense reduces foreclosure expense included in non interest expense.

Announced_Acquisitions

Announced Acquisitions	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Announced Acquisitions	'
	NOTE 8:	Announced acquisitions
	On July 29, 2013, CenterState Banks, Inc. (“CSFL”) entered into an Agreement and Plan of Merger (“Agreement”) with Gulfstream Bancshares, Inc. (“GS” or “Gulfstream”), whereby GS will be merged with and into CSFL. Pursuant to and simultaneously with entering into the Agreement, CSFL’s wholly owned subsidiary bank, CenterState Bank of Florida, N.A. (“CSB”) and GS’s wholly owned subsidiary bank, Gulfstream Business Bank (“GSB”) entered into a Plan of Merger and Merger Agreement whereby GSB will be merged with and into CSB simultaneously with the merger of GS with and into CSFL.
	At September 30, 2013, Gulfstream reported total consolidated assets of $563,644, total consolidated loans of $372,615 and total consolidated deposits of $471,287. Gulfstream is headquartered in Stuart, Florida with branch offices in St. Lucie, Jupiter, and Delray Beach, Florida.
	Under the terms of the Agreement each outstanding share of GS common stock is entitled to receive 3.012 shares of CSFL common stock and a $14.65 cash payment. The Agreement has been unanimously approved by the board of directors of CSFL and GS. The transaction is expected to close early in the first quarter of 2014 subject to customary conditions, including all applicable regulatory approvals and GS shareholder approval.

Effect_of_New_Pronouncements

Effect of New Pronouncements	9 Months Ended
	Sep. 30, 2013
Accounting Changes And Error Corrections [Abstract]	'
Effect of New Pronouncements	'
	NOTE 9:	Effect of new pronouncements
	In October 2012, the Financial Accounting Standards Board (“FASB”) issued guidance on the subsequent accounting for an indemnification asset recognized at the acquisition date as a result of a government assisted acquisition of a financial institution. When an entity recognizes such an indemnification asset and subsequently a change in the cash flows expected to be collected on the indemnification asset occurs as a result of a change in the cash flows expected to be collected on the indemnified asset, the guidance requires the entity to recognize the change in the measurement of the indemnification asset on the same basis as the indemnified assets. Any amortization of changes in value of the indemnification asset should be limited to the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets. The amendments are effective for fiscal years beginning on or after December 15, 2012 and early adoption is permitted. The amendments are to be applied prospectively to any new indemnification assets acquired after the date of adoption and to indemnification assets existing as of the date of adoption arising from a government-assisted acquisition of a financial institution. The impact of this amendment on the consolidated financial statements had no effect since the Company’s prior accounting for the indemnification asset was consistent with this standard.
	In February 2013, the Financial Accounting Standards Board (FASB) issued updated guidance related to disclosure of reclassification amounts out of other comprehensive income. The standard requires that companies present either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and the income statement line items affected by the reclassification. The new requirements will take effect for public companies in fiscal years, and interim periods within those years, beginning after December 15, 2012. The Company adopted this standard on January 1, 2013. The effect of adopting this standard increased our disclosure surrounding reclassification items out of accumulated other comprehensive income.

Effect_of_New_Pronouncements_P

Effect of New Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Changes And Error Corrections [Abstract]	'
Guidance on Subsequent Accounting for Indemnification Asset Recognized at Acquisition Date	'
	In October 2012, the Financial Accounting Standards Board (“FASB”) issued guidance on the subsequent accounting for an indemnification asset recognized at the acquisition date as a result of a government assisted acquisition of a financial institution. When an entity recognizes such an indemnification asset and subsequently a change in the cash flows expected to be collected on the indemnification asset occurs as a result of a change in the cash flows expected to be collected on the indemnified asset, the guidance requires the entity to recognize the change in the measurement of the indemnification asset on the same basis as the indemnified assets. Any amortization of changes in value of the indemnification asset should be limited to the lesser of the term of the indemnification agreement and the remaining life of the indemnified assets. The amendments are effective for fiscal years beginning on or after December 15, 2012 and early adoption is permitted. The amendments are to be applied prospectively to any new indemnification assets acquired after the date of adoption and to indemnification assets existing as of the date of adoption arising from a government-assisted acquisition of a financial institution. The impact of this amendment on the consolidated financial statements had no effect since the Company’s prior accounting for the indemnification asset was consistent with this standard.
Reclassification Amounts Out of Other Comprehensive Income	'
	In February 2013, the Financial Accounting Standards Board (FASB) issued updated guidance related to disclosure of reclassification amounts out of other comprehensive income. The standard requires that companies present either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and the income statement line items affected by the reclassification. The new requirements will take effect for public companies in fiscal years, and interim periods within those years, beginning after December 15, 2012. The Company adopted this standard on January 1, 2013. The effect of adopting this standard increased our disclosure surrounding reclassification items out of accumulated other comprehensive income.

Common_Stock_Outstanding_and_E1

Common Stock Outstanding and Earnings Per Share Data (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Computations	'
	The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the periods presented.
		Three months ended September 30,				Nine months ended September 30,
		2013		2012		2013		2012
	Numerator for basic and diluted earnings per share:
	Net income	$	3,109	$	2,642	$	10,443	$	7,669
	Denominator:
	Denominator for basic earnings per share
	- weighted-average shares		30,109,728		30,077,933		30,099,509		30,072,008
	Effect of dilutive securities:
	Stock options and stock grants		134,145		64,234		116,519		64,672
	Denominator for diluted earnings per share
	- adjusted weighted-average shares		30,243,873		30,142,167		30,216,028		30,136,680
	Basic earnings per share	$	0.1	$	0.09	$	0.35	$	0.25
	Diluted earnings per share	$	0.1	$	0.09	$	0.35	$	0.25

Fair_Value_Tables

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	The fair value of derivatives is based on valuation models using observable market data as of the measurement date (Level 2). Assets and liabilities measured at fair value on a recurring basis are summarized below.
				Fair value measurements using
		Carrying		Quoted prices in		Significant		Significant
		value		active markets for		other		unobservable
				identical assets		observable		inputs
				(Level 1)		inputs		(Level 3)
						(Level 2)
	at September 30, 2013
	Assets:
	Trading securities	$	398		—	$	398		—
	Available for sale securities
	U.S. government sponsored entities and agencies		5		—		5		—
	Mortgage backed securities		415,134		—		415,134		—
	Municipal securities		41,416		—		41,416		—
	Interest rate swap derivatives		712		—		712		—
	Liabilities:		809		—		809		—
	Interest rate swap derivatives
	at December 31, 2012
	Assets:
	Trading securities	$	5,048		—	$	5,048		—
	Available for sale securities
	U.S. government sponsored entities and agencies		7,546		—		7,546		—
	Mortgage backed securities		373,190		—		373,190		—
	Municipal securities		45,022		—		45,022		—
	Interest rate swap derivatives		1,131		—		1,131		—
	Liabilities:
	Interest rate swap derivatives		2,014		—		2,014		—
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	'
	Assets and liabilities measured at fair value on a non-recurring basis are summarized below.
				Fair value measurements using
		Carrying		Quoted prices in		Significant		Significant
		value		active markets for		other		unobservable
				identical assets		observable		inputs
				(Level 1)		inputs		(Level 3)
						(Level 2)
	at September 30, 2013
	Assets:
	Impaired loans
	Residential real estate	$	2,896		—		—	$	2,896
	Commercial real estate		6,174		—		—		6,174
	Land, land development and construction		961		—		—		961
	Commercial		1,310		—		—		1,310
	Consumer		158		—		—		158
	Other real estate owned
	Residential real estate	$	18		—		—	$	18
	Commercial real estate		3,664		—		—		3,664
	Land, land development and construction		4,427		—		—		4,427
	Bank owned real estate held for sale		1,582		—		—		1,582
	at December 31, 2012
	Assets:
	Impaired loans
	Residential real estate	$	837		—		—	$	837
	Commercial real estate		8,379		—		—		8,379
	Land, land development and construction		1,103		—		—		1,103
	Commercial		905		—		—		905
	Consumer		84		—		—		84
	Other real estate owned
	Residential real estate	$	582		—		—	$	582
	Commercial real estate		5,933		—		—		5,933
	Land, land development and construction		4,445		—		—		4,445
	Bank owned real estate held for sale		2,482		—		—		2,482
Carrying Amounts and Estimated Fair Values of Company' s Financial Instruments	'
	The following table presents the carry amounts and estimated fair values of the Company’s financial instruments:
				Fair value measurements
	at September 30, 2013	Carrying amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	106,816	$	106,816	$	—	$	—	$	106,816
	Trading securities		398		—		398		—		398
	Investment securities available for sale		456,555		—		456,555		—		456,555
	FHLB and FRB stock		8,179		—		—		—		n/a
	Loans held for sale		1,317		—		1,317		—		1,317
	Loans, less allowance for loan losses of $21,321		1,437,251		—		—		1,438,680		1,438,680
	FDIC indemnification asset		81,603		—		—		—		n/a
	Interest rate swap derivatives		712		—		712		—		712
	Accrued interest receivable		6,206		—		—		6,206		6,206
	Financial liabilities:
	Deposits - without stated maturities	$	1,561,747	$	1,561,747	$	—	$	—	$	1,561,747
	Deposits - with stated maturities		400,208		—		404,692		—		404,692
	Securities sold under agreement to repurchase		22,150		—		22,150		—		22,150
	Federal funds purchased		45,356		—		45,356		—		45,356
	Corporate debentures		16,990		—		11,011		—		11,011
	Interest rate swap derivatives		809		—		809		—		809
	Accrued interest payable		378		—		378		—		378
				Fair value measurements
	at December 31, 2012	Carrying amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	136,748	$	136,748	$	—	$	—	$	136,748
	Trading securities		5,048		—		5,048		—		5,048
	Investment securities available for sale		425,758		—		425,758		—		425,758
	FHLB and FRB stock		9,749		—		—		—		n/a
	Loans held for sale		2,709		—		2,709		—		2,709
	Loans, less allowance for loan losses of $26,682		1,409,181		—		—		1,324,630		1,324,630
	FDIC indemnification asset		119,289		—		—		—		n/a
	Interest rate swap derivatives		1,131		—		1,131		—		—
	Accrued interest receivable		6,100		—		—		6,100		6,100
	Financial liabilities:
	Deposits - without stated maturities	$	1,521,928	$	1,521,928	$	—	$	—	$	1,521,928
	Deposits - with stated maturities		475,304		—		483,220		—		483,220
	Securities sold under agreement to repurchase		18,792		—		18,792		—		18,792
	Federal funds purchased		38,932		—		38,932		—		38,932
	Corporate debentures		16,970		—		—		8,477		8,477
	Interest rate swap derivatives		2,014		—		2,014		—		2,014
	Accrued interest payable		579		—		579		—		579

Reportable_Segments_Tables

Reportable Segments (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Reconciliation of Reportable Segment Revenues, Expenses and Profit	'
	The table below is a reconciliation of the reportable segment revenues, expenses, and profit to the Company’s consolidated total for the three and nine month periods ending September 30, 2013 and 2012.
	Three month period ending September 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead			entries
		banking			bond sales			and
					division			administration
	Interest income	$	25,304		$	730		$	—					$	26,034
	Interest expense		(1,267	)		(5	)		(152	)					(1,424	)
	Net interest income (expense)		24,037			725			(152	)					24,610
	Recovery of prior loan loss provision		1,273			—			—						1,273
	Non interest income		4,836			3,771			—						8,607
	Non interest expense		(24,620	)		(4,377	)		(853	)					(29,850	)
	Net income (loss) before taxes		5,526			119			(1,005	)					4,640
	Income tax (provision) benefit		(1,867	)		(46	)		382						(1,531	)
	Net income (loss)	$	3,359		$	73		($	623	)				$	3,109
	Total assets	$	2,194,300		$	138,395		$	294,425		($	291,099	)	$	2,336,021
	Nine month period ending September 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead			entries
		banking			bond sales			and
					division			administration
	Interest income	$	72,777		$	2,122		$	—					$	74,899
	Interest expense		(4,019	)		(16	)		(452	)					(4,487	)
	Net interest income (expense)		68,758			2,106			(452	)					70,412
	Recovery of prior loan loss provision		259			—			—						259
	Non interest income		12,364			16,385			—						28,749
	Non interest expense		(65,917	)		(15,815	)		(2,581	)					(84,313	)
	Net income (loss) before taxes		15,464			2,676			(3,033	)					15,107
	Income tax (provision) benefit		(4,933	)		(1,032	)		1,301						(4,664	)
	Net income (loss)	$	10,531		$	1,644		($	1,732	)				$	10,443
	Total assets	$	2,194,300		$	138,395		$	294,425		($	291,099	)	$	2,336,021
	Three month period ending September 30, 2012
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead			entries
		banking			bond sales			and
					division			administration
	Interest income	$	22,676		$	932		$	—					$	23,608
	Interest expense		(1,770	)		(7	)		(164	)					(1,941	)
	Net interest income		20,906			925			(164	)					21,667
	Provision for loan losses		(2,425	)		—			—						(2,425	)
	Non interest income		6,882			9,453			—						16,335
	Non interest expense		(23,704	)		(7,235	)		(767	)					(31,706	)
	Net income before taxes		1,659			3,143			(931	)					3,871
	Income tax (provision) benefit		(389	)		(1,183	)		343						(1,229	)
	Net income (loss)	$	1,270		$	1,960		$	(588	)				$	2,642
	Total assets	$	2,206,116		$	166,231		$	295,062		$	(289,794	)	$	2,377,615
	Nine month period ending September 30, 2012
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead			entries
		banking			bond sales			and
					division			administration
	Interest income	$	68,518		$	3,167		$	—					$	71,685
	Interest expense		(6,053	)		(22	)		(680	)					(6,755	)
	Net interest income		62,465			3,145			(680	)					64,930
	Provision for loan losses		(7,051	)		—			—						(7,051	)
	Non interest income		18,004			28,514			3						46,521
	Non interest expense		(69,011	)		(22,099	)		(2,340	)					(93,450	)
	Net income before taxes		4,407			9,560			(3,017	)					10,950
	Income tax (provision) benefit		(795	)		(3,598	)		1,112						(3,281	)
	Net income (loss)	$	3,612		$	5,962		$	(1,905	)				$	7,669
	Total assets	$	2,206,116		$	166,231		$	295,062		$	(289,794	)	$	2,377,615

Investment_Securities_Availabl1

Investment Securities Available for Sale (Tables)	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Fair Value of Available for Sale Securities and Related Gross Unrealized Gains and Losses Recognized in Accumulated Other Comprehensive Income (Loss)	'
	The fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:
		September 30, 2013
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	5	$	—	$	—	$	5
	Mortgage backed securities		421,248		4,865		10,979		415,134
	Municipal securities		41,094		934		612		41,416
	Total	$	462,347	$	5,799	$	11,591	$	456,555
		December 31, 2012
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	7,465	$	81	$	—	$	7,546
	Mortgage backed securities		364,014		9,247		71		373,190
	Municipal securities		42,570		2,504		52		45,022
	Total	$	414,049	$	11,832	$	123	$	425,758
Schedule of Sales of Available for Sale Securities	'
	The cost of securities sold is determined using the specific identification method. Sales of available for sale securities were as follows:
	For the nine months ended:	Sept 30,		Sept 30,
		2013		2012
	Proceeds	$	68,892	$	140,537
	Gross gains		1,038		2,285
	Gross losses		—		282
Fair Value of Available for Sale Securities by Contractual Maturity	'
	The fair value of available for sale securities at September 30, 2013 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately.
		Fair		Amortized
		Value		Cost
	Investment securities available for sale
	Due in one year or less	$	625	$	625
	Due after one year through five years		1,929		1,800
	Due after five years through ten years		11,594		11,335
	Due after ten years through thirty years		27,273		27,339
	Mortgage backed securities		415,134		421,248
		$	456,555	$	462,347
Investments Gross Unrealized Losses and Fair Value	'
	The following tables show the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2013 and December 31, 2012.
		September 30, 2013
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Obligations of U.S. government sponsored entities and agencies	$	—	$	—	$	—	$	—	$	—	$	—
	Mortgage backed securities		235,856		10,979		—		—		235,856		10,979
	Municipal securities		11,591		612		—		—		11,591		612
	Total temporarily impaired securities	$	247,447	$	11,591	$	—	$	—	$	247,447	$	11,591
		December 31, 2012
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Obligations of U.S. government sponsored entities and	$	—	$	—	$	—	$	—	$	—	$	—
	agencies
	Mortgage backed securities		30,840		71		—		—		30,840		71
	Municipal securities		2,180		52		—		—		2,180		52
	Total temporarily impaired securities	$	33,020	$	123	$	—	$	—	$	33,020	$	123

Loans_Tables

Loans (Tables)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Summary of Information Concerning Loan Portfolio by Collateral Types	'
	The following table sets forth information concerning the loan portfolio by collateral types as of the dates indicated.
			Sept 30, 2013			31-Dec-12
	Loans not covered by FDIC loss share agreements
	Real estate loans
	Residential		$	449,224		$	428,554
	Commercial			529,172			480,494
	Land, development and construction			60,375			55,474
	Total real estate			1,038,771			964,522
	Commercial			126,451			124,225
	Consumer and other loans (note 1)			1,259			2,732
	Consumer and other loans			49,065			48,547
	Loans before unearned fees and deferred cost			1,215,546			1,140,026
	Net unearned fees and costs			135			(458	)
	Allowance for loan losses for noncovered loans			(19,265	)		(24,033	)
	Net loans not covered by FDIC loss share agreements			1,196,416			1,115,535
	Loans covered by FDIC loss share agreements
	Real estate loans
	Residential			124,027			142,480
	Commercial			109,285			134,413
	Land, development and construction			5,673			13,259
	Total real estate			238,985			290,152
	Commercial			3,906			6,143
				242,891			296,295
	Allowance for loan losses for covered loans			(2,056	)		(2,649	)
	Net loans covered by FDIC loss share agreements			240,835			293,646
	Total loans, net of allowance for loan losses		$	1,437,251		$	1,409,181
	note 1:	Consumer loans acquired pursuant to three FDIC assisted transactions of failed financial institutions during the third quarter of 2010 and two in the first quarter of 2012. These loans are not covered by an FDIC loss share agreement. The loans are being accounted for pursuant to ASC Topic 310-30.
Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio	'
	The tables below set forth the activity in the allowance for loan losses for the periods presented.
			Loans not			Loans			Total
			covered by			covered by
			FDIC loss			FDIC loss
			share			share
			agreements			agreements
	Three months ended September 30, 2013
	Balance at beginning of period		$	21,800		$	2,020		$	23,820
	Loans charged-off			(1,570	)		—			(1,570	)
	Recoveries of loans previously charged-off			344			—			344
	Net charge-offs			(1,226	)		—			(1,226	)
	(Recovery) provision for loan losses			(1,309	)		36			(1,273	)
	Balance at end of period		$	19,265		$	2,056		$	21,321
	Nine months ended September 30, 2013
	Balance at beginning of period		$	24,033		$	2,649		$	26,682
	Loans charged-off			(5,404	)		(515	)		(5,919	)
	Recoveries of loans previously charged-off			817			—			817
	Net charge-offs			(4,587	)		(515	)		(5,102	)
	(Recovery) provision for loan losses			(181	)		(78	)		(259	)
	Balance at end of period		$	19,265		$	2,056		$	21,321
	Three months ended September 30, 2012
	Balance at beginning of period		$	23,634		$	1,549		$	25,183
	Loans charged-off			(2,245	)		—			(2,245	)
	Recoveries of loans previously charged-off			978			—			978
	Net charge-offs			(1,267	)		—			(1,267	)
	Provision for loan losses			1,652			773			2,425
	Balance at end of period		$	24,019		$	2,322		$	26,341
	Nine months ended September 30, 2012
	Balance at beginning of period		$	27,585		$	359		$	27,944
	Loans charged-off			(10,393	)		—			(10,393	)
	Recoveries of loans previously charged-off			1,739			—			1,739
	Net charge-offs			(8,654	)		—			(8,654	)
	Provision for loan losses			5,088			1,963			7,051
	Balance at end of period		$	24,019		$	2,322		$	26,341
			Real Estate Loans
			Residential			Commercial			Land,			Comm. &			Consumer			Total
									develop.,			industrial			& other
									constr.
	Loans not covered by FDIC loss share agreements:
	Three months ended September 30, 2013
	Beginning of the period		$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
	Charge-offs			(1,147	)		(53	)		(127	)		(53	)		(190	)		(1,570	)
	Recoveries			163			42			41			22			76			344
	Provision for loan losses			844			(1,431	)		(644	)		(146	)		68			(1,309	)
	Balance at end of period		$	9,651		$	4,584		$	3,341		$	887		$	802		$	19,265
	Nine months ended September 30, 2013
	Beginning of the period		$	6,831		$	8,272		$	6,211		$	1,745		$	974		$	24,033
	Charge-offs			(3,328	)		(1,127	)		(310	)		(112	)		(527	)		(5,404	)
	Recoveries			396			82			161			43			135			817
	Provision for loan losses			5,752			(2,643	)		(2,721	)		(789	)		220			(181	)
	Balance at end of period		$	9,651		$	4,584		$	3,341		$	887		$	802		$	19,265
	Three months ended September 30, 2012
	Beginning of the period		$	4,860		$	8,091		$	7,868		$	1,638		$	1,177		$	23,634
	Charge-offs			(1,456	)		(179	)		(385	)		(10	)		(215	)		(2,245	)
	Recoveries			182			411			338			4			43			978
	Provision for loan losses			1,896			263			(719	)		54			158			1,652
	Balance at end of period		$	5,482		$	8,586		$	7,102		$	1,686		$	1,163		$	24,019
	Nine months ended September 30, 2012
	Beginning of the period		$	6,700		$	8,825		$	9,098		$	1,984		$	978		$	27,585
	Charge-offs			(3,233	)		(1,758	)		(4,593	)		(71	)		(738	)		(10,393	)
	Recoveries			334			834			423			15			133			1,739
	Provision for loan losses			1,681			685			2,174			(242	)		790			5,088
	Balance at end of period		$	5,482		$	8,586		$	7,102		$	1,686		$	1,163		$	24,019
		Real Estate Loans
		Residential			Commercial			Land,			Comm. &			Total
								develop.,			industrial
								constr.
Loans covered by FDIC loss share agreements:
Three months ended September 30, 2013
Beginning of the period		$	—		$	1,577		$	130		$	313		$	2,020
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			(190	)		(8	)		234			36
Balance at end of period		$	—		$	1,387		$	122		$	547		$	2,056
Nine months ended September 30, 2013
Beginning of the period		$	—		$	2,335		$	—		$	314		$	2,649
Charge-offs			—			(515	)		—			—			(515	)
Recoveries			—			—			—			—			—
Provision for loan losses			—			(433	)		122			233			(78	)
Balance at end of period		$	—		$	1,387		$	122		$	547		$	2,056
Three months ended September 30, 2012
Beginning of the period		$	82		$	1,455		$	—		$	12		$	1,549
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			780			—			(7	)		773
Balance at end of period		$	82		$	2,235		$	—		$	5		$	2,322
Nine months ended September 30, 2012
Beginning of the period		$	82		$	223		$	40		$	14		$	359
Charge-offs			—			—			—			—			—
Recoveries			—			—			—			—			—
Provision for loan losses			—			2,012			(40	)		(9	)		1,963
Balance at end of period		$	82		$	2,235		$	—		$	5		$	2,322
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method	'
	The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2013 and December 31, 2012. Accrued interest receivable and unearned loan fees and costs are not included in the recorded investment because they are not material.
			Real Estate Loans
	As of September 30, 2013		Residential			Commercial			Land,			Comm. &			Consumer			Total
									develop.,			industrial			& other
									constr.
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment		$	429		$	263		$	57		$	8		$	27		$	784
	Collectively evaluated for impairment			9,222			4,321			3,284			879			775			18,481
	Acquired with deteriorated credit quality			—			1,387			122			547			—			2,056
	Total ending allowance balance		$	9,651		$	5,971		$	3,463		$	1,434		$	802		$	21,321
	Loans:
	Loans individually evaluated for impairment		$	9,054		$	27,246		$	1,391		$	1,831		$	358		$	39,880
	Loans collectively evaluated for impairment			440,170			501,926			58,984			124,620			48,707			1,174,407
	Loans acquired with deteriorated credit quality			124,027			109,285			5,673			3,906			1,259			244,150
	Total ending loan balances		$	573,251		$	638,457		$	66,048		$	130,357		$	50,324		$	1,458,437
			Real Estate Loans
	As of December 31, 2012		Residential			Commercial			Land,			Comm. &			Consumer			Total
									develop.,			industrial			& other
									constr.
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment		$	610		$	277		$	107		$	1		$	27		$	1,022
	Collectively evaluated for impairment			6,221			7,995			6,104			1,744			947			23,011
	Acquired with deteriorated credit quality			—			2,335			—			314			—			2,649
	Total ending allowance balance		$	6,831		$	10,607		$	6,211		$	2,059		$	974		$	26,682
	Loans:
	Loans individually evaluated for impairment		$	9,936		$	32,860		$	1,520		$	3,470		$	393		$	48,179
	Loans collectively evaluated for impairment			418,618			447,634			53,954			120,755			48,154			1,089,115
	Loans acquired with deteriorated credit quality			142,480			134,413			13,259			6,143			2,732			299,027
	Total ending loan balance		$	571,034		$	614,907		$	68,733		$	130,368		$	51,279		$	1,436,321
Summary of Impaired Loan	'
	The table below summarizes impaired loan data for the periods presented.
			Sept 30,			Dec 31,
			2013			2012
	Impaired loans with a specific valuation allowance		$	7,992		$	10,744
	Impaired loans without a specific valuation allowance			31,888			37,435
	Total impaired loans		$	39,880		$	48,179
	Amount of allowance for loan losses allocated to impaired loans		$	784		$	1,022
	Performing TDRs		$	11,604		$	8,841
	Non performing TDRs, included in NPLs			4,207			5,819
	Total TDRs (TDRs are required to be included in impaired loans)		$	15,811		$	14,660
	Impaired loans that are not TDRs			24,069			33,519
	Total impaired loans		$	39,880		$	48,179
Troubled Debt Restructured Loans by Loans Type	'
	TDRs as of September 30, 2013 and December 31, 2012 quantified by loan type classified separately as accrual (performing loans) and non-accrual (non performing loans) are presented in the tables below.
	As of September 30, 2013		Accruing			Non Accrual			Total
	Real estate loans:
	Residential		$	6,936		$	1,546		$	8,482
	Commercial			3,538			2,496			6,034
	Land, development, construction			429			—			429
	Total real estate loans			10,903			4,042			14,945
	Commercial			469			40			509
	Consumer and other			232			125			357
	Total TDRs		$	11,604		$	4,207		$	15,811
	As of December 31, 2012		Accruing			Non-Accrual			Total
	Real estate loans:
	Residential		$	6,446		$	1,778		$	8,224
	Commercial			1,589			3,701			5,290
	Land, development, construction			202			231			433
	Total real estate loans			8,237			5,710			13,947
	Commercial			315			5			320
	Consumer and other			289			104			393
	Total TDRs		$	8,841		$	5,819		$	14,660
Summary of Loans by Class Modified	'
	The following table presents loans by class modified and for which there was a payment default within twelve months following the modification during the period ending September 30, 2013 and December 31, 2012.
			Period ending						Year ending
			September 30, 2013						December 31, 2012
			Number			Recorded			Number			Recorded
			of loans			investment			of loans			investment
	Residential			3		$	562			10		$	758
	Commercial real estate			5			1,662			4			2,567
	Land, development, construction			—			—			4			156
	Commercial and Industrial			1			25			—			—
	Consumer and other			1			18			1			45
	Total			10		$	2,267			19		$	3,526
Summary of Loans Individually Evaluated for Impairment by Class of Loans	'
	The following tables present loans individually evaluated for impairment by class of loans as of September 30, 2013 and December 31, 2012. The recorded investment is less than the unpaid principal balance due to partial charge-offs.
	As of September 30, 2013		Unpaid			Recorded			Allowance for
			principal			investment			loan losses
			balance						allocated
	With no related allowance recorded:
	Residential real estate		$	5,539		$	5,448		$	—
	Commercial real estate			25,749			23,892			—
	Land, development, construction			1,760			911			—
	Commercial and industrial			1,728			1,631			—
	Consumer, other			6			6			—
	With an allowance recorded:
	Residential real estate			3,910			3,606			429
	Commercial real estate			3,533			3,354			263
	Land, development, construction			494			480			57
	Commercial and industrial			245			200			8
	Consumer, other			364			352			27
	Total		$	43,328		$	39,880		$	784
	As of December 31, 2012		Unpaid			Recorded			Allowance for
			principal			investment			loan losses
			balance						allocated
	With no related allowance recorded:
	Residential real estate		$	1,712		$	1,712		$	—
	Commercial real estate			33,789			31,171			—
	Land, development, construction			2,042			1,087			—
	Commercial and industrial			3,556			3,465			—
	With an allowance recorded:
	Residential real estate			8,624			8,224			610
	Commercial real estate			1,742			1,689			277
	Land, development, construction			664			433			107
	Commercial and industrial			5			5			1
	Consumer, other			395			393			27
	Total		$	52,529		$	48,179		$	1,022
Summary of Impairment by Class of Loans	'
	Three month period ending September, 30, 2013		Average of			Interest			Cash basis
			impaired			income			interest
			loans			recognized			income
						during			recognized
						impairment
	Real estate loans:
	Residential		$	8,829		$	78		$	—
	Commercial			26,960			295			—
	Land, development, construction			1,436			2			—
	Total real estate loans			37,225			375			—
	Commercial and industrial			1,710			12			—
	Consumer and other loans			351			3			—
	Total		$	39,286		$	390		$	—
	Nine month period ending September 30, 2013		Average of			Interest			Cash basis
			impaired			income			interest
			loans			recognized			income
						during			recognized
						impairment
	Real estate loans:
	Residential		$	9,014		$	222		$	—
	Commercial			28,134			840			—
	Land, development, construction			1,423			10			—
	Total real estate loans			38,571			1,072			—
	Commercial and industrial			1,984			28			—
	Consumer and other loans			369			8			—
	Total		$	40,924		$	1,108		$	—
	Three month period ending September, 30, 2012		Average of			Interest			Cash basis
			impaired			income			interest
			loans			recognized			income
						during			recognized
						impairment
	Real estate loans:
	Residential		$	10,289		$	78		$	—
	Commercial			29,900			285			—
	Land, development, construction			2,531			4			—
	Total real estate loans			42,720			367			—
	Commercial and industrial			3,306			34			—
	Consumer and other loans			427			3			—
	Total		$	46,453		$	404		$	—
	Nine month period ending September 30, 2012		Average of			Interest			Cash basis
			impaired			income			interest
			loans			recognized			income
						during			recognized
						impairment
	Real estate loans:
	Residential		$	10,131		$	215		$	—
	Commercial			29,756			946			—
	Land, development, construction			4,599			19			—
	Total real estate loans			44,486			1,180			—
	Commercial and industrial			4,432			80			—
	Consumer and other loans			455			13			—
	Total		$	49,373		$	1,273		$	—
Summary of Nonperforming Loans	'
	Nonperforming loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans.
	Nonperforming loans were as follows:		Sept 30, 2013			Dec 31, 2012
	Non accrual loans		$	21,104		$	25,448
	Loans past due over 90 days and still accruing interest			35			293
	Total non performing loans		$	21,139		$	25,741
Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due Over 90 Days Still on Accrual by Class of Loans	'
	The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans as of September 30, 2013 and December 31, 2012, excluding loans acquired from the FDIC with evidence of credit deterioration and covered by FDIC loss share agreements:
	As of September 30, 2013		Nonaccrual			Loans past due
						over 90 days
						still accruing
	Residential real estate		$	10,882		$	—
	Commercial real estate			7,263			—
	Land, development, construction			1,247			—
	Commercial			1,290			—
	Consumer, other			422			35
	Total		$	21,104		$	35
	As of December 31, 2012		Nonaccrual			Loans past due
						over 90 days
						still accruing
	Residential real estate		$	9,993		$	—
	Commercial real estate			11,459			—
	Land, development, construction			2,032			—
	Commercial			1,650			—
	Consumer, other			314			293
	Total		$	25,448		$	293
Summary Aging of Recorded Investment in Past Due Loans	'
	The following table presents the aging of the recorded investment in past due loans as of September 30, 2013 and December 31, 2012, excluding loans acquired from the FDIC with evidence of credit deterioration and covered by FDIC loss share agreements:
			Accruing Loans
	As of September 30, 2013		Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
						days past			days past			than 90			Due			Past Due			Loans
						due			due			days past
												due
	Residential real estate		$	449,224		$	3,136		$	1,623		$	—		$	4,759		$	433,583		$	10,882
	Commercial real estate			529,172			2,642			342			—			2,984			518,925			7,263
	Land/dev/construction			60,375			109			618			—			727			58,401			1,247
	Commercial			126,451			264			69			—			333			124,828			1,290
	Consumer			50,324			209			149			35			393			49,509			422
			$	1,215,546		$	6,360		$	2,801		$	35		$	9,196		$	1,185,246		$	21,104
			Accruing Loans
	As of December 31, 2012		Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
						days past			days past			than 90			Due			Past Due			Loans
						due			due			days past
												due
	Residential real estate		$	428,554		$	1,632		$	677		$	—		$	2,309		$	416,252		$	9,993
	Commercial real estate			480,494			1,663			1,147			—			2,810			466,225			11,459
	Land/dev/construction			55,474			115			624			—			739			52,703			2,032
	Commercial			124,225			203			416			—			619			121,956			1,650
	Consumer			51,279			456			489			293			1,238			49,727			314
			$	1,140,026		$	4,069		$	3,353		$	293		$	7,715			1,106,863		$	25,448
Risk Category of Loans by Class of Loans, Excluding Loans Acquired from FDIC	'
	As of September 30, 2013 and December 31, 2012, and based on the most recent analysis performed, the risk category of loans by class of loans, excluding loans with evidence of deterioration of credit quality purchased from the FDIC and covered by FDIC loss share agreements, is as follows:
			As of September 30, 2013
	Loan Category		Pass			Special			Substandard			Doubtful
						Mention
	Residential real estate		$	420,235		$	6,511		$	22,478		$	—
	Commercial real estate			435,312			59,217			34,643			—
	Land/dev/construction			46,689			10,765			2,921			—
	Commercial			117,529			4,825			4,097			—
	Consumer			48,970			554			800			—
			$	1,068,735		$	81,872		$	64,939		$	—
			As of December 31, 2012
	Loan Category		Pass			Special			Substandard			Doubtful
						Mention
	Residential real estate		$	400,244		$	4,797		$	23,513		$	—
	Commercial real estate			394,238			44,933			41,323			—
	Land/dev/construction			39,650			11,994			3,830			—
	Commercial			114,067			3,978			6,180			—
	Consumer			49,894			613			772			—
			$	998,093		$	66,315		$	75,618		$	—
Investment in Residential and Consumer Loans, Excluding Loans from FDIC	'
	The following table presents the recorded investment in residential and consumer loans, excluding loans covered by FDIC loss share agreements, based on payment activity as of September 30, 2013:
			Residential			Consumer
	Performing		$	438,342		$	49,867
	Nonperforming			10,882			457
	Total		$	449,224		$	50,324
Summary of Total Contractually Required Principal and Interest Cash Payments, Management's Estimate of Expected Total Cash Payments and Carrying Value of Loans	'
	The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and carrying value of the loans as of September 30, 2013 and December 31, 2012. Contractually required principal and interest payments have been adjusted for estimated prepayments.
			Sept 30, 2013			Dec 31, 2012
	Contractually required principal and interest		$	416,565		$	534,989
	Non-accretable difference			(71,810	)		(142,855	)
	Cash flows expected to be collected			344,755			392,134
	Accretable yield			(100,605	)		(93,107	)
	Carrying value of acquired loans		$	244,150		$	299,027
	Allowance for loan losses			(2,056	)		(2,649	)
	Carrying value less allowance for loan losses		$	242,094		$	296,378
Summary of Changes in Total Contractually Required Principal and Interest Cash Payments	'
	The table below summarizes the changes in total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and carrying value of the loans during the three and nine month period ending September 30, 2013 and 2012.
	Activity during the three month period ending September 30, 2013		June 30,			income			all other			Sept 30,
			2013			accretion			adjustments			2013
	Contractually required principal and interest		$	449,146					$	(32,581	)	$	416,565
	Non-accretable difference			(90,060	)					18,250			(71,810	)
	Cash flows expected to be collected			359,086						(14,331	)		344,755
	Accretable yield			(99,407	)		8,988			(10,186	)		(100,605	)
	Carry value of acquired loans		$	259,679		$	8,988		$	(24,517	)	$	244,150
	Activity during the nine month period ending September 30, 2013		Dec 31,			income			all other			Sept 30,
			2012			accretion			adjustments			2013
	Contractually required principal and interest		$	534,989					$	(118,424	)	$	416,565
	Non-accretable difference			(142,855	)					71,045			(71,810	)
	Cash flows expected to be collected			392,134						(47,379	)		344,755
	Accretable yield			(93,107	)		24,835			(32,333	)		(100,605	)
	Carry value of acquired loans		$	299,027		$	24,835		$	(79,712	)	$	244,150
	Activity during the three month period ending September 30, 2012		June 30,			Effect of			income			all other			Sept 30,
			2012			acquisitions			accretion			adjustments			2012
	Contractually required principal and interest		$	594,439								$	(17,945	)	$	576,494
	Non-accretable difference			(164,756	)								5,415			(159,341	)
	Cash flows expected to be collected			429,683									(12,530	)		417,153
	Accretable yield			(100,286	)					6,208			(11,334	)		(105,412	)
	Carry value of acquired loans		$	329,397		$	—		$	6,208		$	(23,864	)	$	311,741
	Activity during the nine month period ending September 30, 2012		Dec 31,			Effect of			income			all other			Sept 30,
			2011			acquisitions			accretion			adjustments			2012
	Contractually required principal and interest		$	291,531		$	363,130					$	(78,167	)	$	576,494
	Non-accretable difference			(51,536	)		(125,630	)					17,825			(159,341	)
	Cash flows expected to be collected			239,995			237,500						(60,342	)		417,153
	Accretable yield			(74,552	)		(32,975	)		17,955			(15,840	)		(105,412	)
	Carry value of acquired loans		$	165,443		$	204,525		$	17,955		$	(76,182	)	$	311,741

FDIC_Indemnification_Asset_Tab

FDIC Indemnification Asset (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
FDIC Loss Share Indemnification Asset	'
	The activity in the FDIC loss share indemnification asset is as follows:
		Nine month			Twelve month
		period ended			period ended
		Sept 30, 2013			31-Dec-12
	Beginning of the year	$	119,289		$	50,642
	Effect of acquisitions		—			85,088
	Amortization, net		(9,307	)		(3,096	)
	Indemnification income - ORE		5,420			4,185
	Indemnification of foreclosure expense		2,491			2,425
	Proceeds from FDIC		(36,227	)		(21,787	)
	(Recovery) impairment of loan pool		(63	)		1,832
	Period end balance	$	81,603		$	119,289

Nature_of_Operations_and_Basis1

Nature of Operations and Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Revenue_Generating_Activities
	County
	Location
Nature Of Operations And Basis Of Presentation [Abstract]	'
Number of service banking locations	55
Number of counties	18
Number of inter-related revenue generating activities	3

Common_Stock_Outstanding_and_E2

Common Stock Outstanding and Earnings Per Share Data - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Anti dilutive stock options	1,040,121	1,116,739	1,165,761	1,143,888

Common_Stock_Outstanding_and_E3

Common Stock Outstanding and Earnings Per Share Data - Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Computations (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator for basic and diluted earnings per share:	'	'	'	'
Net income	$3,109	$2,642	$10,443	$7,669
Denominator:	'	'	'	'
Denominator for basic earnings per share - weighted-average shares	30,109,728	30,077,933	30,099,509	30,072,008
Effect of dilutive securities:	'	'	'	'
Stock options and stock grants	134,145	64,234	116,519	64,672
Denominator for diluted earnings per share - adjusted weighted-average shares	30,243,873	30,142,167	30,216,028	30,136,680
Basic earnings per share	$0.10	$0.09	$0.35	$0.25
Diluted earnings per share	$0.10	$0.09	$0.35	$0.25

Fair_Value_Assets_and_Liabilit

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets:	'	'
Interest rate swap derivatives, assets	$712	'
Trading securities, at fair value	398	5,048
Available for sale securities	456,555	425,758
Interest rate swap derivatives, carrying amount assets	712	1,131
Liabilities:	'	'
Interest rate swap derivatives, carrying amount liability	809	2,014
Interest rate swap derivatives, liabilities	809	2,014
Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	415,134	373,190
Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	41,416	45,022
Fair Value Measurements on Recurring [Member]	'	'
Assets:	'	'
Trading securities, at fair value	398	5,048
Interest rate swap derivatives, carrying amount assets	712	1,131
Liabilities:	'	'
Interest rate swap derivatives, carrying amount liability	809	2,014
Fair Value Measurements on Recurring [Member] | Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Assets:	'	'
Available for sale securities	5	7,546
Fair Value Measurements on Recurring [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	415,134	373,190
Fair Value Measurements on Recurring [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	41,416	45,022
Fair Value Measurements on Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Assets:	'	'
Interest rate swap derivatives, assets	'	'
Trading securities, at fair value	'	'
Liabilities:	'	'
Interest rate swap derivatives, liabilities	'	'
Fair Value Measurements on Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Assets:	'	'
Available for sale securities	'	'
Fair Value Measurements on Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	'	'
Fair Value Measurements on Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	'	'
Fair Value Measurements on Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets:	'	'
Interest rate swap derivatives, assets	712	1,131
Trading securities, at fair value	398	5,048
Liabilities:	'	'
Interest rate swap derivatives, liabilities	809	2,014
Fair Value Measurements on Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Assets:	'	'
Available for sale securities	5	7,546
Fair Value Measurements on Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	415,134	373,190
Fair Value Measurements on Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	41,416	45,022
Fair Value Measurements on Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'
Assets:	'	'
Interest rate swap derivatives, assets	'	'
Trading securities, at fair value	'	'
Liabilities:	'	'
Interest rate swap derivatives, liabilities	'	'
Fair Value Measurements on Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Assets:	'	'
Available for sale securities	'	'
Fair Value Measurements on Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	'	'
Fair Value Measurements on Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	'	'

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'	'	'	'
Impaired loans with allocated allowance for loan losses	$12,083	'	$12,083	'	$11,678
Impaired valuation allowance	584	'	584	'	370
Provision for loan loss expense	383	'	781	'	'
Additions charged to expenses	3,184	1,735	5,851	2,825	'
Proceeds from sale of bank property held for sale	'	'	931	'	'
Gain on disposal of bank property held for sale	'	'	31	'	'
Total impairment charges	$0	$449	$0	$614	'
Minimum [Member]	'	'	'	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'	'	'	'
Capitalization rates to determine fair value of collateral	8.00%	'	8.00%	'	'
Maximum [Member]	'	'	'	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'	'	'	'
Capitalization rates to determine fair value of collateral	11.00%	'	11.00%	'	'

Fair_Value_Assets_and_Liabilit1

Fair Value - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Impaired loans on Residential real estate at Carrying value	$2,896	$837
Impaired loans on Commercial real estate at Carrying value	6,174	8,379
Impaired loans on Construction land development and land at Carrying value	961	1,103
Impaired loans on Commercial at Carrying value	1,310	905
Impaired loans on Consumer at Carrying value	158	84
Other real estate owned on Residential real estate at Carrying value	18	582
Other real estate owned on Commercial real estate at Carrying value	3,664	5,933
Other real estate owned on Construction land development and land at Carrying value	4,427	4,445
Bank owned real estate held for sale	1,582	2,482
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Impaired loans on Residential real estate	'	'
Impaired loans on Commercial real estate	'	'
Impaired loans on Land, land development and construction	'	'
Impaired loans on Commercial	'	'
Impaired loans on Consumer	'	'
Other real estate owned on Residential real estate	'	'
Other real estate owned on Commercial real estate	'	'
Other real estate owned on Land, land development and construction	'	'
Bank owned real estate held for sale	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Impaired loans on Residential real estate	'	'
Impaired loans on Commercial real estate	'	'
Impaired loans on Land, land development and construction	'	'
Impaired loans on Commercial	'	'
Impaired loans on Consumer	'	'
Other real estate owned on Residential real estate	'	'
Other real estate owned on Commercial real estate	'	'
Other real estate owned on Land, land development and construction	'	'
Bank owned real estate held for sale	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]	'	'
Impaired loans on Residential real estate	2,896	837
Impaired loans on Commercial real estate	6,174	8,379
Impaired loans on Land, land development and construction	961	1,103
Impaired loans on Commercial	1,310	905
Impaired loans on Consumer	158	84
Other real estate owned on Residential real estate	18	582
Other real estate owned on Commercial real estate	3,664	5,933
Other real estate owned on Land, land development and construction	4,427	4,445
Bank owned real estate held for sale	$1,582	$2,482

Fair_Value_Carrying_Amounts_an

Fair Value - Carrying Amounts and Estimated Fair Values of Company' s Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Financial assets:	'	'	'	'
Cash and cash equivalents	$106,816	$136,748	$103,131	$151,095
Cash and cash equivalents, fair value	106,816	136,748	'	'
Trading securities, at fair value	398	5,048	'	'
Investment securities available for sale, at fair value	456,555	425,758	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	8,179	9,749	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
Loans held for sale, carrying amount	1,317	2,709	'	'
Loans held for sale, fair value	1,317	2,709	'	'
Loans, less allowance for loan losses, carrying amount	1,437,251	1,409,181	'	'
Loans, less allowance for loan losses, fair value	1,438,680	1,324,630	'	'
FDIC indemnification asset, carrying amount	81,603	119,289	'	50,642
FDIC Indemnification asset, fair value	'	'	'	'
Interest rate swap derivatives, carrying amount assets	712	1,131	'	'
Interest rate swap derivatives, assets fair value	712	'	'	'
Accrued interest receivable, carrying amount	6,206	6,100	'	'
Accrued interest receivable, fair value	6,206	6,100	'	'
Financial liabilities:	'	'	'	'
Deposits- without stated maturities, carrying amount	1,561,747	1,521,928	'	'
Deposits- without stated maturities, fair value	1,561,747	1,521,928	'	'
Deposits- with stated maturities, carrying amount	400,208	475,304	'	'
Deposits- with stated maturities, fair value	404,692	483,220	'	'
Securities sold under agreement to repurchase	22,150	18,792	'	'
Securities sold under agreement to repurchase, fair value	22,150	18,792	'	'
Federal funds purchased, carrying amount	45,356	38,932	'	'
Federal funds purchased, fair value	45,356	38,932	'	'
Corporate debentures, carrying amount	16,990	16,970	'	'
Corporate debentures, fair value	11,011	8,477	'	'
Interest rate swap derivatives, carrying amount	809	2,014	'	'
Interest rate swap derivatives, fair value	809	2,014	'	'
Accrued interest payable, carrying amount	378	579	'	'
Accrued interest payable, fair value	378	579	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and cash equivalents, fair value	106,816	136,748	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Financial liabilities:	'	'	'	'
Deposits- without stated maturities, fair value	1,561,747	1,521,928	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Trading securities, at fair value	398	5,048	'	'
Investment securities available for sale, at fair value	456,555	425,758	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
Loans held for sale, fair value	1,317	2,709	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Interest rate swap derivatives, assets fair value	712	1,131	'	'
Financial liabilities:	'	'	'	'
Deposits- with stated maturities, fair value	404,692	483,220	'	'
Securities sold under agreement to repurchase, fair value	22,150	18,792	'	'
Federal funds purchased, fair value	45,356	38,932	'	'
Corporate debentures, fair value	11,011	'	'	'
Interest rate swap derivatives, fair value	809	2,014	'	'
Accrued interest payable, fair value	378	579	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
Loans, less allowance for loan losses, fair value	1,438,680	1,324,630	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Accrued interest receivable, fair value	6,206	6,100	'	'
Financial liabilities:	'	'	'	'
Corporate debentures, fair value	'	$8,477	'	'

Fair_Value_Carrying_Amounts_an1

Fair Value - Carrying Amounts and Estimated Fair Values of Company' s Financial Instruments (Parenthetical) (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]	'	'
Deduction of Allowance for loan losses from loans	$21,321	$26,682

Reportable_Segments_Reconcilia

Reportable Segments - Reconciliation of Reportable Segment Revenues, Expenses and Profit (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	$26,034	$23,608	$74,899	$71,685	'
Interest expense	-1,424	-1,941	-4,487	-6,755	'
Net interest income (expense)	24,610	21,667	70,412	64,930	'
Recovery of prior loan loss provision	1,273	-2,425	259	-7,051	'
Non interest income	8,607	16,335	28,749	46,521	'
Non interest expense	-29,850	-31,706	-84,313	-93,450	'
Income before provision for income taxes	4,640	3,871	15,107	10,950	'
Income tax (provision) benefit	-1,531	-1,229	-4,664	-3,281	'
Net income (loss)	3,109	2,642	10,443	7,669	'
Total assets	2,336,021	2,377,615	2,336,021	2,377,615	2,363,240
Operating Segments [Member] | Commercial and Retail Banking [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	25,304	22,676	72,777	68,518	'
Interest expense	-1,267	-1,770	-4,019	-6,053	'
Net interest income (expense)	24,037	20,906	68,758	62,465	'
Recovery of prior loan loss provision	1,273	-2,425	259	-7,051	'
Non interest income	4,836	6,882	12,364	18,004	'
Non interest expense	-24,620	-23,704	-65,917	-69,011	'
Income before provision for income taxes	5,526	1,659	15,464	4,407	'
Income tax (provision) benefit	-1,867	-389	-4,933	-795	'
Net income (loss)	3,359	1,270	10,531	3,612	'
Total assets	2,194,300	2,206,116	2,194,300	2,206,116	'
Operating Segments [Member] | Correspondent Banking and Bond Sales Division [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	730	932	2,122	3,167	'
Interest expense	-5	-7	-16	-22	'
Net interest income (expense)	725	925	2,106	3,145	'
Non interest income	3,771	9,453	16,385	28,514	'
Non interest expense	-4,377	-7,235	-15,815	-22,099	'
Income before provision for income taxes	119	3,143	2,676	9,560	'
Income tax (provision) benefit	-46	-1,183	-1,032	-3,598	'
Net income (loss)	73	1,960	1,644	5,962	'
Total assets	138,395	166,231	138,395	166,231	'
Corporate Overhead and Administration [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest expense	-152	-164	-452	-680	'
Net interest income (expense)	-152	-164	-452	-680	'
Non interest income	'	'	'	3	'
Non interest expense	-853	-767	-2,581	-2,340	'
Income before provision for income taxes	-1,005	-931	-3,033	-3,017	'
Income tax (provision) benefit	382	343	1,301	1,112	'
Net income (loss)	-623	-588	-1,732	-1,905	'
Total assets	294,425	295,062	294,425	295,062	'
Elimination Entries [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total assets	($291,099)	($289,794)	($291,099)	($289,794)	'

Reportable_Segments_Additional

Reportable Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Location
	County
	Subsidiary
Segment Reporting Measurement Disclosures [Abstract]	'
Number of non bank subsidiary	1
Number of counties in which company operates	18
Number of bank locations	55

Investment_Securities_Availabl2

Investment Securities Available for Sale - Fair Value of Available for Sale Securities and Related Gross Unrealized Gains and Losses Recognized in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	$462,347	$414,049
Gross Unrealized Gains	5,799	11,832
Gross Unrealized Losses	11,591	123
Fair Value	456,555	425,758
Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	5	7,465
Gross Unrealized Gains	'	81
Fair Value	5	7,546
Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	421,248	364,014
Gross Unrealized Gains	4,865	9,247
Gross Unrealized Losses	10,979	71
Fair Value	415,134	373,190
Municipal Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	41,094	42,570
Gross Unrealized Gains	934	2,504
Gross Unrealized Losses	612	52
Fair Value	$41,416	$45,022

Investment_Securities_Availabl3

Investment Securities Available for Sale - Schedule of Sales of Available for Sale Securities (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Investments [Abstract]	'	'
Proceeds	$68,892	$140,537
Gross gains	1,038	2,285
Gross losses	'	$282

Investment_Securities_Availabl4

Investment Securities Available for Sale - Additional Information (Detail) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	Security		Security
Investments [Abstract]	'	'	'
Tax provision related to net realized gains	$400	$754	'
Securities estimated fair value	$108,871	'	$108,737
Percentage of mortgage-backed securities held from U.S. government-sponsored entities and agencies	10.00%	'	10.00%
Number of securities representing specified criteria	0	'	0
Percentage of AFS securities held by any one issuer as a percentage of stockholders' equity	100.00%	'	'

Investment_Securities_Availabl5

Investment Securities Available for Sale - Fair Value of Available for Sale Securities by Contractual Maturity (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments [Abstract]	'	'
Investment securities available for sale due in one year or less, Fair Value	$625	'
Investment securities available for sale due after one year through five years, Fair Value	1,929	'
Investment securities available for sale due after five years through ten years, Fair Value	11,594	'
Investment securities available for sale due after ten years through thirty years, Fair Value	27,273	'
Investment securities available for sale Mortgage backed securities, Fair Value	415,134	'
Fair Value	456,555	425,758
Investment securities available for sale due in one year or less, Amortized Cost	625	'
Investment securities available for sale due after one year through five years, Amortized Cost	1,800	'
Investment securities available for sale due after five years through ten years, Amortized Cost	11,335	'
Investment securities available for sale due after ten years through thirty years, Amortized Cost	27,339	'
Investment securities available for sale Mortgage backed securities, Amortized Cost	421,248	'
Amortized cost	$462,347	$414,049

Investment_Securities_Availabl6

Investment Securities Available for Sale - Investments Gross Unrealized Losses and Fair Value (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Obligations of U.S. Government Sponsored Entities and Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	'	'
Less than 12 months, Unrealized Losses	'	'
12 months or more, Fair Value	'	'
12 months or more, Unrealized Losses	'	'
Total, Fair Value	'	'
Total, Unrealized Losses	'	'
Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	235,856	30,840
Less than 12 months, Unrealized Losses	10,979	71
12 months or more, Fair Value	'	'
12 months or more, Unrealized Losses	'	'
Total, Fair Value	235,856	30,840
Total, Unrealized Losses	10,979	71
Municipal Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	11,591	2,180
Less than 12 months, Unrealized Losses	612	52
12 months or more, Fair Value	'	'
12 months or more, Unrealized Losses	'	'
Total, Fair Value	11,591	2,180
Total, Unrealized Losses	612	52
Total Temporarily Impaired Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	247,447	33,020
Less than 12 months, Unrealized Losses	11,591	123
12 months or more, Fair Value	'	'
12 months or more, Unrealized Losses	'	'
Total, Fair Value	247,447	33,020
Total, Unrealized Losses	$11,591	$123

Loans_Summary_of_Information_C

Loans - Summary of Information Concerning Loan Portfolio by Collateral Types (Detail) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Total loans covered by FDIC loss share agreements	$242,891	'	$296,295	'	'	'
Total loans, net of allowance for loan losses	1,437,251	'	1,409,181	'	'	'
Allowance for loan losses for noncovered loans	-21,321	-23,820	-26,682	-26,341	-25,183	-27,944
Loans Not Covered by FDIC Loss Share Agreements [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	449,224	'	428,554	'	'	'
Real estate loans, Commercial	529,172	'	480,494	'	'	'
Land, development, construction	60,375	'	55,474	'	'	'
Total real estate	1,038,771	'	964,522	'	'	'
Commercial	126,451	'	124,225	'	'	'
Consumer and other loans (note 1)	1,259	'	2,732	'	'	'
Consumer and other loans	49,065	'	48,547	'	'	'
Loans before unearned fees and deferred cost	1,215,546	'	1,140,026	'	'	'
Net unearned fees and costs	135	'	-458	'	'	'
Allowance for loan losses for noncovered loans	-19,265	-21,800	-24,033	-24,019	-23,634	-27,585
Net loans not covered by FDIC loss share agreements	1,196,416	'	1,115,535	'	'	'
Loans Covered by FDIC Loss Share Agreements [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	124,027	'	142,480	'	'	'
Real estate loans, Commercial	109,285	'	134,413	'	'	'
Land, development, construction	5,673	'	13,259	'	'	'
Total real estate	238,985	'	290,152	'	'	'
Commercial	3,906	'	6,143	'	'	'
Total loans covered by FDIC loss share agreements	242,891	'	296,295	'	'	'
Allowance for loan losses for covered loans	-2,056	-2,020	-2,649	-2,322	-1,549	-359
Net loans covered by FDIC loss share agreements	$240,835	'	$293,646	'	'	'

Loans_Summary_of_Allowance_for

Loans - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	$23,820	$25,183	$26,682	$27,944
Charge-offs	-1,570	-2,245	-5,919	-10,393
Recoveries	344	978	817	1,739
Net charge-offs	-1,226	-1,267	-5,102	-8,654
Provision for loan losses	-1,273	2,425	-259	7,051
Balance at end of period	21,321	26,341	21,321	26,341
Loans Covered by FDIC Loss Share Agreements [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period, Covered	2,020	1,549	2,649	359
Charge-offs, Covered	'	'	-515	'
Recoveries, Covered	'	'	'	'
Net charge-offs	'	'	-515	'
Provision for loan losses, Covered	36	773	-78	1,963
Balance at end of period, Covered	2,056	2,322	2,056	2,322
Loans Covered by FDIC Loss Share Agreements [Member] | Residential Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period, Covered	'	82	'	82
Recoveries, Covered	'	'	'	'
Balance at end of period, Covered	'	82	'	82
Loans Covered by FDIC Loss Share Agreements [Member] | Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period, Covered	1,577	1,455	2,335	223
Charge-offs, Covered	'	'	-515	'
Recoveries, Covered	'	'	'	'
Provision for loan losses, Covered	-190	780	-433	2,012
Balance at end of period, Covered	1,387	2,235	1,387	2,235
Loans Covered by FDIC Loss Share Agreements [Member] | Land, Development, Construction [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period, Covered	130	'	'	40
Recoveries, Covered	'	'	'	'
Provision for loan losses, Covered	-8	'	122	-40
Balance at end of period, Covered	122	'	122	'
Loans Covered by FDIC Loss Share Agreements [Member] | Commercial and Industrial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period, Covered	313	12	314	14
Recoveries, Covered	'	'	'	'
Provision for loan losses, Covered	234	-7	233	-9
Balance at end of period, Covered	547	5	547	5
Loans Not Covered by FDIC Loss Share Agreements [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	21,800	23,634	24,033	27,585
Charge-offs	-1,570	-2,245	-5,404	-10,393
Recoveries	344	978	817	1,739
Net charge-offs	-1,226	-1,267	-4,587	-8,654
Provision for loan losses	-1,309	1,652	-181	5,088
Balance at end of period	19,265	24,019	19,265	24,019
Loans Not Covered by FDIC Loss Share Agreements [Member] | Residential Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	9,791	4,860	6,831	6,700
Charge-offs	-1,147	-1,456	-3,328	-3,233
Recoveries	163	182	396	334
Provision for loan losses	844	1,896	5,752	1,681
Balance at end of period	9,651	5,482	9,651	5,482
Loans Not Covered by FDIC Loss Share Agreements [Member] | Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	6,026	8,091	8,272	8,825
Charge-offs	-53	-179	-1,127	-1,758
Recoveries	42	411	82	834
Provision for loan losses	-1,431	263	-2,643	685
Balance at end of period	4,584	8,586	4,584	8,586
Loans Not Covered by FDIC Loss Share Agreements [Member] | Land, Development, Construction [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	4,071	7,868	6,211	9,098
Charge-offs	-127	-385	-310	-4,593
Recoveries	41	338	161	423
Provision for loan losses	-644	-719	-2,721	2,174
Balance at end of period	3,341	7,102	3,341	7,102
Loans Not Covered by FDIC Loss Share Agreements [Member] | Commercial and Industrial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	1,064	1,638	1,745	1,984
Charge-offs	-53	-10	-112	-71
Recoveries	22	4	43	15
Provision for loan losses	-146	54	-789	-242
Balance at end of period	887	1,686	887	1,686
Loans Not Covered by FDIC Loss Share Agreements [Member] | Consumer and Other [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance at beginning of period	848	1,177	974	978
Charge-offs	-190	-215	-527	-738
Recoveries	76	43	135	133
Provision for loan losses	68	158	220	790
Balance at end of period	$802	$1,163	$802	$1,163

Loans_Allowance_for_Loan_Losse

Loans - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Allowance for loan losses:	'	'
Individually evaluated for impairment	$784	$1,022
Collectively evaluated for impairment	18,481	23,011
Acquired with deteriorated credit quality	2,056	2,649
Total ending allowance balance	21,321	26,682
Loans:	'	'
Loans individually evaluated for impairment	39,880	48,179
Loans collectively evaluated for impairment	1,174,407	1,089,115
Loans acquired with deteriorated credit quality	244,150	299,027
Total ending loan balance	1,458,437	1,436,321
Residential Real Estate [Member]	'	'
Allowance for loan losses:	'	'
Individually evaluated for impairment	429	610
Collectively evaluated for impairment	9,222	6,221
Total ending allowance balance	9,651	6,831
Loans:	'	'
Loans individually evaluated for impairment	9,054	9,936
Loans collectively evaluated for impairment	440,170	418,618
Loans acquired with deteriorated credit quality	124,027	142,480
Total ending loan balance	573,251	571,034
Commercial Real Estate [Member]	'	'
Allowance for loan losses:	'	'
Individually evaluated for impairment	263	277
Collectively evaluated for impairment	4,321	7,995
Acquired with deteriorated credit quality	1,387	2,335
Total ending allowance balance	5,971	10,607
Loans:	'	'
Loans individually evaluated for impairment	27,246	32,860
Loans collectively evaluated for impairment	501,926	447,634
Loans acquired with deteriorated credit quality	109,285	134,413
Total ending loan balance	638,457	614,907
Land, Development, Construction [Member]	'	'
Allowance for loan losses:	'	'
Individually evaluated for impairment	57	107
Collectively evaluated for impairment	3,284	6,104
Acquired with deteriorated credit quality	122	'
Total ending allowance balance	3,463	6,211
Loans:	'	'
Loans individually evaluated for impairment	1,391	1,520
Loans collectively evaluated for impairment	58,984	53,954
Loans acquired with deteriorated credit quality	5,673	13,259
Total ending loan balance	66,048	68,733
Commercial and Industrial [Member]	'	'
Allowance for loan losses:	'	'
Individually evaluated for impairment	8	1
Collectively evaluated for impairment	879	1,744
Acquired with deteriorated credit quality	547	314
Total ending allowance balance	1,434	2,059
Loans:	'	'
Loans individually evaluated for impairment	1,831	3,470
Loans collectively evaluated for impairment	124,620	120,755
Loans acquired with deteriorated credit quality	3,906	6,143
Total ending loan balance	130,357	130,368
Consumer and Other [Member]	'	'
Allowance for loan losses:	'	'
Individually evaluated for impairment	27	27
Collectively evaluated for impairment	775	947
Total ending allowance balance	802	974
Loans:	'	'
Loans individually evaluated for impairment	358	393
Loans collectively evaluated for impairment	48,707	48,154
Loans acquired with deteriorated credit quality	1,259	2,732
Total ending loan balance	$50,324	$51,279

Loans_Summary_of_Impaired_Loan

Loans - Summary of Impaired Loan (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Impaired Financing Receivable [Abstract]	'	'
Impaired loans with a specific valuation allowance	$7,992	$10,744
Impaired loans without a specific valuation allowance	31,888	37,435
Total impaired loans	39,880	48,179
Amount of allowance for loan losses allocated to impaired loans	784	1,022
Performing TDRs	11,604	8,841
Non performing TDRs, included in NPLs	4,207	5,819
Total TDRs (TDRs are required to be included in impaired loans)	15,811	14,660
Impaired loans that are not TDRs	24,069	33,519
Total impaired loans	$39,880	$48,179

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]	'	'	'
Loans modification, modified terms allowance period minimum	'	'12 months	'
Loans modification, modified terms allowance period maximum	'	'24 months	'
Troubled debt restructured loans total	$15,811	$15,811	'
Performing troubled debt restructured loans	11,604	11,604	8,841
Non performing TDRs, included in NPLs	4,207	4,207	5,819
Provision for loan loss expense	426	748	'
Partial charge offs for troubled debt restructured	219	445	'
Percentage of troubled debt restructured current pursuant to modified terms	'	73.00%	'
Percentage of troubled debt restructured not performing pursuant to their modified terms	'	27.00%	'
Provision for loan loss expense within twelve months	172	332	'
Partial charge offs for troubled debt restructured	59	176	'
Loans at credit risk outstanding	500	500	'
Pass rated loans less than the amount	500	500	'
Non-accretable expected cash flows	$10,894	$30,811	'

Loans_Troubled_Debt_Restructur

Loans - Troubled Debt Restructured Loans by Loans Type (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	$11,604	$8,841
Non performing TDRs	4,207	5,819
Total TDRs	15,811	14,660
Residential Real Estate [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	6,936	6,446
Non performing TDRs	1,546	1,778
Total TDRs	8,482	8,224
Commercial Real Estate [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	3,538	1,589
Non performing TDRs	2,496	3,701
Total TDRs	6,034	5,290
Land, Development, Construction [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	429	202
Non performing TDRs	'	231
Total TDRs	429	433
Total Real Estate Loans [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	10,903	8,237
Non performing TDRs	4,042	5,710
Total TDRs	14,945	13,947
Commercial [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	469	315
Non performing TDRs	40	5
Total TDRs	509	320
Consumer and Other [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Performing TDRs	232	289
Non performing TDRs	125	104
Total TDRs	$357	$393

Loans_Summary_of_Loans_by_Clas

Loans - Summary of Loans by Class Modified (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	SecurityLoan	SecurityLoan
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	10	19
Recorded investment	$2,267	$3,526
Residential Real Estate [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	3	10
Recorded investment	562	758
Commercial Real Estate [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	5	4
Recorded investment	1,662	2,567
Land, Development, Construction [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	'	4
Recorded investment	'	156
Commercial and Industrial [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	1	'
Recorded investment	25	'
Consumer and Other [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	1	1
Recorded investment	$18	$45

Loans_Summary_of_Loans_Individ

Loans - Summary of Loans Individually Evaluated for Impairment by Class of Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Financial Receivables [Line Items]	'	'
Recorded investment, With no related allowance	$31,888	$37,435
Amount of allowance for loan losses allocated to impaired loans	784	1,022
Recorded investment, With an allowance recorded	7,992	10,744
Unpaid principal balance	43,328	52,529
Total impaired loans	39,880	48,179
With No Related Allowance Recorded [Member] | Residential Real Estate [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With no related allowance	5,539	1,712
Recorded investment, With no related allowance	5,448	1,712
With No Related Allowance Recorded [Member] | Commercial Real Estate [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With no related allowance	25,749	33,789
Recorded investment, With no related allowance	23,892	31,171
With No Related Allowance Recorded [Member] | Land, Development, Construction [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With no related allowance	1,760	2,042
Recorded investment, With no related allowance	911	1,087
With No Related Allowance Recorded [Member] | Commercial and Industrial [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With no related allowance	1,728	3,556
Recorded investment, With no related allowance	1,631	3,465
With No Related Allowance Recorded [Member] | Consumer and Other [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With no related allowance	6	'
Recorded investment, With no related allowance	6	'
With an Allowance Recorded [Member] | Residential Real Estate [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With an allowance recorded	3,910	8,624
Amount of allowance for loan losses allocated to impaired loans	429	610
Recorded investment, With an allowance recorded	3,606	8,224
With an Allowance Recorded [Member] | Commercial Real Estate [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With an allowance recorded	3,533	1,742
Amount of allowance for loan losses allocated to impaired loans	263	277
Recorded investment, With an allowance recorded	3,354	1,689
With an Allowance Recorded [Member] | Land, Development, Construction [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With an allowance recorded	494	664
Amount of allowance for loan losses allocated to impaired loans	57	107
Recorded investment, With an allowance recorded	480	433
With an Allowance Recorded [Member] | Commercial and Industrial [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With an allowance recorded	245	5
Amount of allowance for loan losses allocated to impaired loans	8	1
Recorded investment, With an allowance recorded	200	5
With an Allowance Recorded [Member] | Consumer and Other [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Unpaid principal balance, With an allowance recorded	364	395
Amount of allowance for loan losses allocated to impaired loans	27	27
Recorded investment, With an allowance recorded	$352	$393

Loans_Summary_of_Impairment_by

Loans - Summary of Impairment by Class of Loans (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	$39,286	$46,453	$40,924	$49,373
Interest income recognized during the period	390	404	1,108	1,273
Cash basis interest income recognized	'	'	'	'
Residential Real Estate [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	8,829	10,289	9,014	10,131
Interest income recognized during the period	78	78	222	215
Cash basis interest income recognized	'	'	'	'
Commercial Real Estate [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	26,960	29,900	28,134	29,756
Interest income recognized during the period	295	285	840	946
Cash basis interest income recognized	'	'	'	'
Land, Development, Construction [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	1,436	2,531	1,423	4,599
Interest income recognized during the period	2	4	10	19
Cash basis interest income recognized	'	'	'	'
Total Real Estate Loans [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	37,225	42,720	38,571	44,486
Interest income recognized during the period	375	367	1,072	1,180
Cash basis interest income recognized	'	'	'	'
Commercial and Industrial [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	1,710	3,306	1,984	4,432
Interest income recognized during the period	12	34	28	80
Cash basis interest income recognized	'	'	'	'
Consumer and Other Loans [Member]	'	'	'	'
Schedule Of Financial Receivables [Line Items]	'	'	'	'
Average of impaired loans	351	427	369	455
Interest income recognized during the period	3	3	8	13
Cash basis interest income recognized	'	'	'	'

Loans_Summary_of_Nonperforming

Loans - Summary of Nonperforming Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Summary Of Nonperforming Loans [Abstract]	'	'
Non accrual loans	$21,104	$25,448
Loans past due over 90 days and still accruing interest	35	293
Total non performing loans	$21,139	$25,741

Loans_Summary_of_Recorded_Inve

Loans - Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due Over 90 Days Still on Accrual by Class of Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	$21,104	$25,448
Loans past due over 90 days still accruing, Total	35	293
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	10,882	9,993
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	7,263	11,459
Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	1,247	2,032
Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	1,290	1,650
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	422	314
Loans past due over 90 days still accruing, Total	$35	$293

Loans_Summary_Aging_of_Recorde

Loans - Summary Aging of Recorded Investment in Past Due Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	$1,215,546	$1,140,026
30 - 59 days past due	6,360	4,069
60 - 89 days past due	2,801	3,353
Greater than 90 days past due	35	293
Total Past Due	9,196	7,715
Loans Not Past Due	1,185,246	1,106,863
Nonaccrual loans	21,104	25,448
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	449,224	428,554
30 - 59 days past due	3,136	1,632
60 - 89 days past due	1,623	677
Total Past Due	4,759	2,309
Loans Not Past Due	433,583	416,252
Nonaccrual loans	10,882	9,993
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	529,172	480,494
30 - 59 days past due	2,642	1,663
60 - 89 days past due	342	1,147
Total Past Due	2,984	2,810
Loans Not Past Due	518,925	466,225
Nonaccrual loans	7,263	11,459
Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	60,375	55,474
30 - 59 days past due	109	115
60 - 89 days past due	618	624
Total Past Due	727	739
Loans Not Past Due	58,401	52,703
Nonaccrual loans	1,247	2,032
Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	126,451	124,225
30 - 59 days past due	264	203
60 - 89 days past due	69	416
Total Past Due	333	619
Loans Not Past Due	124,828	121,956
Nonaccrual loans	1,290	1,650
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	50,324	51,279
30 - 59 days past due	209	456
60 - 89 days past due	149	489
Greater than 90 days past due	35	293
Total Past Due	393	1,238
Loans Not Past Due	49,509	49,727
Nonaccrual loans	$422	$314

Loans_Risk_Category_of_Loans_b

Loans - Risk Category of Loans by Class of Loans, Excluding Loans Acquired from FDIC (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	$449,224	'
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	50,324	'
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	1,068,735	998,093
Pass [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	420,235	400,244
Pass [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	435,312	394,238
Pass [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	46,689	39,650
Pass [Member] | Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	117,529	114,067
Pass [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	48,970	49,894
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	81,872	66,315
Special Mention [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	6,511	4,797
Special Mention [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	59,217	44,933
Special Mention [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	10,765	11,994
Special Mention [Member] | Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	4,825	3,978
Special Mention [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	554	613
Substandard [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	64,939	75,618
Substandard [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	22,478	23,513
Substandard [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	34,643	41,323
Substandard [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	2,921	3,830
Substandard [Member] | Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	4,097	6,180
Substandard [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	800	772
Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'
Doubtful [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'
Doubtful [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'
Doubtful [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'
Doubtful [Member] | Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'
Doubtful [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	'	'

Loans_Investment_in_Residentia

Loans - Investment in Residential and Consumer Loans, Excluding Loans from FDIC (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Residential Real Estate [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	$449,224
Residential Real Estate [Member] | Performing [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	438,342
Residential Real Estate [Member] | Nonperforming [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	10,882
Consumer and Other [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	50,324
Consumer and Other [Member] | Performing [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	49,867
Consumer and Other [Member] | Nonperforming [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Loans	$457

Loans_Summary_of_Total_Contrac

Loans - Summary of Total Contractually Required Principle and Interest Cash Payments, Management's Estimate of Expected Total Cash Payments and Carrying Value of Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Loans Acquired Accounted For As Debt Securities General Items [Abstract]	'	'
Contractually required principal and interest	$416,565	$534,989
Non-accretable difference	-71,810	-142,855
Cash flows expected to be collected	344,755	392,134
Accretable yield	-100,605	-93,107
Carrying value of acquired loans	244,150	299,027
Allowance for loan losses	-2,056	-2,649
Carrying value less allowance for loan losses	$242,094	$296,378

Loans_Summary_of_Changes_in_To

Loans - Summary of Changes in Total Contractually Required Principle and Interest Cash Payments (Detail) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

In Thousands, unless otherwise specified

Carry Value of Acquired Loans [Member]

Carry Value of Acquired Loans [Member]

Carry Value of Acquired Loans [Member]

Carry Value of Acquired Loans [Member]

Accretable Yield [Member]

Accretable Yield [Member]

Accretable Yield [Member]

Accretable Yield [Member]

Cash Flows Expected to be Collected [Member]

Cash Flows Expected to be Collected [Member]

Cash Flows Expected to be Collected [Member]

Cash Flows Expected to be Collected [Member]

Non-Accretable Difference [Member]

Non-Accretable Difference [Member]

Non-Accretable Difference [Member]

Non-Accretable Difference [Member]

Contractually Required Principal and Interest [Member]

Contractually Required Principal and Interest [Member]

Contractually Required Principal and Interest [Member]

Contractually Required Principal and Interest [Member]

Financing Receivable, Recorded Investment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contractually required principal and interest, beginning balance

$416,565

$534,989

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$449,146

$594,439

$534,989

$291,531

Non-accretable difference, beginning balance

-71,810

-142,855

'

'

'

'

'

'

'

'

'

'

'

'

-90,060

-164,756

-142,855

-51,536

'

'

'

'

Cash flows expected to be collected, beginning balance

344,755

392,134

'

'

'

'

'

'

'

'

359,086

429,683

392,134

239,995

'

'

'

'

'

'

'

'

Accretable yield, beginning balance

100,605

93,107

'

'

'

'

-99,407

-100,286

-93,107

-74,552

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value of acquired loans, beginning balance

244,150

299,027

259,679

329,397

299,027

165,443

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effect of acquisitions

'

'

'

'

'

204,525

'

'

'

-32,975

'

'

'

237,500

'

'

'

-125,630

'

'

'

363,130

Income accretion

'

'

8,988

6,208

24,835

17,955

8,988

6,208

24,835

17,955

'

'

'

'

'

'

'

'

'

'

'

'

All other adjustments

'

'

-24,517

-23,864

-79,712

-76,182

-10,186

-11,334

-32,333

-15,840

-14,331

-12,530

-47,379

-60,342

18,250

5,415

71,045

17,825

-32,581

-17,945

-118,424

-78,167

Contractually required principal and interest, ending balance

416,565

534,989

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

416,565

576,494

416,565

576,494

Non-accretable difference, ending balance

-71,810

-142,855

'

'

'

'

'

'

'

'

'

'

'

'

-71,810

-159,341

-71,810

-159,341

'

'

'

'

Cash flows expected to be collected, ending balance

344,755

392,134

'

'

'

'

'

'

'

'

344,755

417,153

344,755

417,153

'

'

'

'

'

'

'

'

Accretable yield, ending balance

100,605

93,107

'

'

'

'

-100,605

-105,412

-100,605

-105,412

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value of acquired loans, ending balance

$244,150

$299,027

$244,150

$311,741

$244,150

$311,741

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

FDIC_Indemnification_Asset_Add

FDIC Indemnification Asset - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2010
		Bank	Bank
Fdic Indemnification Asset [Abstract]	'	'	'
Number of acquisitions under agreement	'	2	3
Percentage of federal deposit insurance corporation reimbursable amount	80.00%	'	'
Federal Deposit Insurance Corporation reimbursable expenses	$63	($1,832)	'
Cost incurred as a percentage of indemnification revenue	80.00%	'	'
Percentage of indemnification of foreclosure expense from FDIC	80.00%	'	'

FDIC_Indemnification_Asset_FDI

FDIC Indemnification Asset - FDIC Loss Share Indemnification Asset (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fdic Loss Share Indemnification Asset [Abstract]	'	'	'	'	'
Beginning of the year	'	'	$119,289	$50,642	$50,642
Effect of acquisitions	'	'	'	'	85,088
Amortization, net	-3,836	-671	-9,307	-1,556	-3,096
Indemnification income - ORE	'	'	5,420	'	4,185
Indemnification of foreclosure expense	'	'	2,491	'	2,425
Proceeds from FDIC	'	'	-36,227	'	-21,787
(Recovery) impairment of loan pool	'	'	-63	'	1,832
Period end balance	$81,603	'	$81,603	'	$119,289

Announced_Acquisitions_Additio

Announced Acquisitions - Additional Information (Detail) (Gulfstream Bancshares, Inc. [Member], USD $)	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013
Gulfstream Bancshares, Inc. [Member]	'
Business Acquisition [Line Items]	'
Total consolidated assets	$563,644
Total consolidated loans	372,615
Total consolidated deposits	$471,287
Number of shares entitled to be received by GS common stock	3.012
Cash entitled to be received by GS common stock	$14.65