CenterState Bank (CSFL) 10-Q 5 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
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	'	45,034,032

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$25,043	$21,581
Federal funds sold and Federal Reserve Bank deposits	490,966	153,308
Cash and cash equivalents	516,009	174,889
Trading securities, at fair value	89	'
Investment securities available for sale, at fair value	542,149	457,086
Loans held for sale, at lower of cost or fair value	1,596	1,010
Loans, excluding purchased credit impaired	2,042,149	1,242,758
Purchased credit impaired loans	353,870	231,421
Allowance for loan losses	-19,200	-20,454
Net Loans	2,376,819	1,453,725
Bank premises and equipment, net	98,623	96,619
Accrued interest receivable	8,216	6,337
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	17,176	8,189
Goodwill	76,981	44,924
Core deposit intangible	15,724	4,958
Trust intangible	1,070	1,158
Bank owned life insurance	57,485	49,285
Other repossessed real estate owned covered by FDIC loss share agreements	30,698	19,111
Other repossessed real estate owned	12,123	6,409
FDIC indemnification asset	61,311	73,877
Deferred income tax asset, net	53,175	5,296
Bank property held for sale	13,168	1,582
Prepaid expense and other assets	19,170	11,556
TOTAL ASSETS	3,901,582	2,416,011
Deposits:	'	'
Demand - non-interest bearing	1,023,285	644,915
Demand - interest bearing	589,573	483,842
Savings and money market accounts	982,172	542,599
Time deposits	526,313	384,875
Deposits held for sale	185,646	'
Total deposits	3,306,989	2,056,231
Securities sold under agreement to repurchase	33,619	20,457
Federal funds purchased	43,080	29,909
Corporate debentures	23,829	16,996
Accrued interest payable	411	333
Payables and accrued expenses	54,196	18,706
Total liabilities	3,462,124	2,142,632
Stockholders' equity:	'	'
Common stock, $.01 par value: 100,000,000 shares authorized; 45,022,780 and 30,112,475 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	450	301
Additional paid-in capital	388,113	229,544
Retained earnings	49,303	48,018
Accumulated other comprehensive income ( loss)	1,592	-4,484
Total stockholders' equity	439,458	273,379
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$3,901,582	$2,416,011

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
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	45,022,780	30,112,475
Common stock, shares outstanding	45,022,780	30,112,475

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (unaudited) (USD $)	3 Months Ended			6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Interest income:	'	'		'		'
Loans	$28,509	$21,790		$54,238		$43,225
Investment securities available for sale:	'	'		'		'
Taxable	3,809	2,097		7,286		4,485
Tax-exempt	337	372		674		729
Federal funds sold and other	424	228		663		426
Total interest income	33,079	24,487		62,861		48,865
Interest expense:	'	'		'		'
Deposits	1,523	1,330		2,860		2,713
Securities sold under agreement to repurchase	56	21		79		39
Federal funds purchased	5	6		11		11
Corporate debentures	238	150		461		300
Total interest expenses	1,822	1,507		3,411		3,063
Net interest income	31,257	22,980		59,450		45,802
Provision for loan losses	-106	1,374		-147		1,014
Net interest income after loan loss provision	31,363	21,606		59,597		44,788
Non interest income:	'	'		'		'
Income from correspondent bank capital markets division	4,192	4,904		7,340		11,044
Other correspondent banking related revenue	1,093	705		1,876		1,570
Service charges on deposit accounts	2,333	2,081		4,595		3,900
Debit, prepaid, ATM and merchant card related fees	1,495	1,342		3,001		2,627
Wealth management related revenue	1,104	1,130		2,321		2,200
FDIC indemnification income	421	1,396		1,689		2,024
FDIC indemnification asset amortization	-5,006	-3,272		-10,191		-5,471
Bank owned life insurance income	356	338		708		677
Other service charges and fees	338	231		747		533
Net gain on sale of securities available for sale	46	1,008		46		1,038
Total other income	6,372	9,863		12,132		20,142
Non interest expense:	'	'		'		'
Salaries, wages and employee benefits	17,185	15,234		32,866		31,474
Occupancy expense	2,479	1,942		4,439		3,834
Depreciation of premises and equipment	1,563	1,455		3,041		2,952
Supplies, stationary and printing	334	285		561		573
Marketing expenses	619	586		1,239		1,114
Data processing expense	1,306	912		2,345		1,796
Legal, audit and other professional fees	1,376	844		2,151		1,627
Core deposit intangible (CDI) amortization	472	250		803		503
Postage and delivery	365	267		633		552
ATM and debit card related expenses	468	428		942		939
Bank regulatory expenses	753	635		1,384		1,216
Loss on sale of repossessed real estate ("OREO")	379	563		456		562
Valuation write down of repossessed real estate ("OREO")	885	1,680		1,905		2,667
Loss on repossessed assets other than real estate	19	104		17		346
Foreclosure related expenses	1,092	787		1,821		1,580
Merger and acquisition related expenses	4,897	'		7,244		'
Branch closure and efficiency initiatives	29	'		3,187		'
Other expenses	1,932	1,401		3,522		2,728
Total other expenses	36,153	27,373		68,556		54,463
Income before provision for income taxes	1,582	4,096		3,173		10,467
Provision for income taxes	545	1,338		1,083		3,133
Net income	1,037	2,758		2,090		7,334
Other comprehensive income, net of tax:	'	'		'		'
Unrealized securities holding (loss) gain, net of income taxes	4,976	-6,799		6,104		-8,611
Less: reclassified adjustments for gain included in net income, net of income taxes, of $18, $388, $18, and $400, respectively	'	'	[1]	'	[1]	'	[1]
Net unrealized (loss) gain on available for sale securities, net of income taxes	4,948	-7,419		6,076		-9,249
Total comprehensive income (loss)	$5,985	($4,661)		$8,166		($1,915)
Earnings per share:	'	'		'		'
Basic	$0.03	$0.09		$0.06		$0.24
Diluted	$0.03	$0.09		$0.06		$0.24
Common shares used in the calculation of earnings per share:	'	'		'		'
Basic	38,665,018	30,098,853		36,576,622		30,094,315
Diluted	39,051,230	30,161,241		36,980,234		30,155,780
[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 six month periods ended June 30, 2014 and 2013 was $18, $388, $18, and $400, respectively.

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (unaudited) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Reclassifications of gain included in net income, income taxes	$18	$388	$18	$400

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (unaudited) (USD $)	Total	Gulf Stream [Member]	First Southern Bancorp, Inc. [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Additional Paid in Capital [Member]	Additional Paid in Capital [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands, except Share data					Gulf Stream [Member]	First Southern Bancorp, Inc. [Member]		Gulf Stream [Member]	First Southern Bancorp, Inc. [Member]
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	'	'	'	'	'	'	'
Net income	7,334	'	'	'	'	'	'	'	'	7,334	'
Unrealized holding gain/loss on available for sale securities, net of deferred income tax	-9,249	'	'	'	'	'	'	'	'	'	-9,249
Dividends paid - common ($0.02 per share)	-602	'	'	'	'	'	'	'	'	-602	'
Stock grants issued	250	'	'	'	'	'	250	'	'	'	'
Stock grants issued, shares	'	'	'	24,503	'	'	'	'	'	'	'
Stock based compensation expense	152	'	'	'	'	'	152	'	'	'	'
Balances at ending at Jun. 30, 2013	271,416	'	'	301	'	'	229,354	'	'	43,711	-1,950
Balances at ending, shares at Jun. 30, 2013	'	'	'	30,104,270	'	'	'	'	'	'	'
Balances at beginning at Dec. 31, 2013	273,379	'	'	301	'	'	229,544	'	'	48,018	-4,484
Balances at beginning, shares at Dec. 31, 2013	30,112,475	'	'	30,112,475	'	'	'	'	'	'	'
Net income	2,090	'	'	'	'	'	'	'	'	2,090	'
Unrealized holding gain/loss on available for sale securities, net of deferred income tax	6,076	'	'	'	'	'	'	'	'	'	6,076
Dividends paid - common ($0.02 per share)	-805	'	'	'	'	'	'	'	'	-805	'
Stock grants issued	274	'	'	'	'	'	274	'	'	'	'
Stock grants issued, shares	'	'	'	26,656,000	'	'	'	'	'	'	'
Stock based compensation expense	144	'	'	'	'	'	144	'	'	'	'
Stock options exercised, including tax benefit	894	'	'	2	'	'	892	'	'	'	'
Stock options exercised including tax benefit, Shares	'	'	'	211,684	'	'	'	'	'	'	'
Stock issued pursuant to acquisition	'	53,150	100,639	'	52	95	'	53,098	100,544	'	'
Stock issued pursuant to acquisition, Shares	'	'	'	'	5,195,541	9,476,424	'	'	'	'	'
Stock options acquired and converted pursuant to Gulfstream acquisition	3,617	'	'	'	'	'	3,617	'	'	'	'
Balances at ending at Jun. 30, 2014	$439,458	'	'	$450	'	'	$388,113	'	'	$49,303	$1,592
Balances at ending, shares at Jun. 30, 2014	45,022,780	'	'	45,022,780	'	'	'	'	'	'	'

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (unaudited) (Parenthetical) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Unrealized holding gain/loss on available for sale securities, deferred income tax benefit	$3,816	$5,808
Dividends paid - common, per share	$0.02	$0.02
Retained Earnings [Member]	'	'
Dividends paid - common, per share	$0.02	$0.02
Accumulated Other Comprehensive Income (Loss) [Member]	'	'
Unrealized holding gain/loss on available for sale securities, deferred income tax benefit	$3,816	$5,808

CONDENSED_CONSOLIDATED_STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$2,090	$7,334
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan losses	-147	1,014
Depreciation of premises and equipment	3,041	2,952
Accretion of purchase accounting adjustments	-17,159	-15,866
Net amortization of investment securities	2,840	3,725
Net deferred loan origination fees	-412	-456
Gain on sale of securities available for sale	-46	-1,038
Trading securities revenue	-69	-131
Purchases of trading securities	-65,234	-129,249
Proceeds from sale of trading securities	65,214	134,428
Repossessed real estate owned valuation write down	1,905	2,667
Loss on sale of repossessed real estate owned	456	562
Repossessed assets other than real estate valuation write down	17	52
Loss on sale of repossessed assets other than real estate	'	294
Gain on sale of loans held for sale	-183	-170
Loans originated and held for sale	-10,991	-10,887
Proceeds from sale of loans held for sale	10,835	12,006
Gain on disposal of and or sale of fixed assets	-11	'
Gain on disposal of bank property held for sale	'	-31
Impairment on bank property held for sale	2,506	'
Deferred income taxes	-639	2,184
Stock based compensation expense	369	289
Bank owned life insurance income	-708	-677
Net cash from changes in:	'	'
Net changes in accrued interest receivable, prepaid expenses, and other assets	2,480	6,905
Net change in accrued interest payable, accrued expense, and other liabilities	179	-680
Net cash (used in)/provided by operating activities	-3,667	15,227
Cash flows from investing activities:	'	'
Purchases of investment securities available for sale	'	-31,133
Purchases of mortgage backed securities available for sale	-176,584	-183,002
Purchases of FRB/FHLB stock	-3,580	'
Proceeds from maturities of investment securities available for sale	'	165
Proceeds from called investment securities available for sale	1,355	3,670
Proceeds from pay-downs of mortgage backed securities available for sale	39,036	57,515
Proceeds from sales of investment securities available for sale	62,111	31,201
Proceeds from sales of mortgage backed securities available for sale	261,426	37,691
Proceeds from sales of FHLB and FRB stock	1,054	1,570
Net (increase)decrease in loans	46,263	-2,589
Cash received from FDIC loss sharing agreements	7,510	28,371
Purchases of premises and equipment, net	1,218	-1,517
Proceeds from sale of repossessed real estate	14,262	12,095
Proceeds from sale of fixed assets	56	13
Proceeds from sale of bank property held for sale	'	931
Net cash from bank acquisitions	130,497	'
Net cash provided by investing activities	384,624	-45,019
Cash flows from financing activities:	'	'
Net decrease in deposits	-80,473	-20,239
Net increase in securities sold under agreement to repurchase	5,586	3,098
Net increase in federal funds purchased	13,171	14,342
Net in other borrowings	-5,708	'
Net increase in payable to shareholders for acquisitions	27,527	'
Stock options exercised, including tax benefit	894	'
Dividends paid	-805	-602
Net cash provided by financing activities	-39,837	-3,401
Net (decrease)increase in cash and cash equivalents	341,120	-33,193
Cash and cash equivalents, beginning of period	174,889	136,748
Cash and cash equivalents, end of period	516,009	103,555
Transfer of loans to other real estate owned	8,046	15,667
Transfers of bank property to held for sale	4,647	'
Cash paid during the period for:	'	'
Interest	3,824	3,485
Income taxes	$5,462	$783

Nature_of_Operations_and_Basis

Nature of Operations and Basis of Presentation	6 Months Ended
	Jun. 30, 2014
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 68 full service banking locations in 21 counties throughout Florida, providing traditional deposit and lending products and services to its commercial and retail customers. Ten of our 68 branches are scheduled to be closed in September 2014. The deposits from 6 and the real estate from 5 have been sold to an unrelated commercial bank. The remaining 4 will be consolidated into existing CenterState branches. 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 capital markets 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, 2013. 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 six month periods ended June 30, 2014 are not necessarily indicative of the results expected for the full year.
	Some items in the prior period financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior periods net income or shareholders’ equity.

Common_Stock_Outstanding_and_E

Common Stock Outstanding and Earnings Per Share Data	6 Months Ended
	Jun. 30, 2014
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 and six month periods ending June 30, 2014 and 2013 were 973,875, 989,105, 1,121,942 and 1,126,478 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 June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Numerator for basic and diluted earnings per share:
	Net income	$	1,037	$	2,758	$	2,090	$	7,334
	Denominator:
	Denominator for basic earnings per share - weighted-average shares		38,665,018		30,098,853		36,576,622		30,094,315
	Effect of dilutive securities:
	Stock options and stock grants		386,212		62,388		403,612		61,465
	Denominator for diluted earnings per share - adjusted weighted-average shares		39,051,230		30,161,241		36,980,234		30,155,780
	Basic earnings per share	$	0.03	$	0.09	$	0.06	$	0.24
	Diluted earnings per share	$	0.03	$	0.09	$	0.06	$	0.24

Fair_Value

Fair Value	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014
	Assets:
	Trading securities	$	89		—	$	89		—
	Available for sale securities
	U.S. government sponsored entities and agencies		4		—		4		—
	Mortgage backed securities		502,590		—		502,590		—
	Municipal securities		39,555		—		39,555		—
	Interest rate swap derivatives		3,467		—		3,467		—
	Liabilities:
	Interest rate swap derivatives		3,796		—		3,796		—
	at December 31, 2013
	Assets:
	Trading securities	$	—		—	$	—		—
	Available for sale securities
	U.S. government sponsored entities and agencies		4		—		4		—
	Mortgage backed securities		416,881		—		416,881		—
	Municipal securities		40,201		—		40,201		—
	Interest rate swap derivatives		2,603		—		2,603		—
	Liabilities:
	Interest rate swap derivatives		2,496		—		2,496		—
	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 June 30, 2014, 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 June 30, 2014
	Assets:
	Impaired loans
	Residential real estate	$	3,184		—		—	$	3,184
	Commercial real estate		6,058		—		—		6,058
	Land, land development and construction		1,248		—		—		1,248
	Commercial		683		—		—		683
	Consumer		150		—		—		150
	Other real estate owned
	Residential real estate	$	1,599		—		—	$	1,599
	Commercial real estate		3,741		—		—		3,741
	Land, land development and construction		1,913		—		—		1,913
	Bank property held for sale		6,049		—		—		6,049
	at December 31, 2013
	Assets:
	Impaired loans
	Residential real estate	$	3,191		—		—	$	3,191
	Commercial real estate		7,515		—		—		7,515
	Land, land development and construction		290		—		—		290
	Commercial		731		—		—		731
	Consumer		157		—		—		157
Other real estate owned
Residential real estate	$	27		—		—	$	27
Commercial real estate		3,837		—		—		3,837
Land, land development and construction		3,949		—		—		3,949
Bank owned real estate held for sale		1,582		—		—		1,582
Impaired loans with specific valuation allowances and/or partial charge-offs had a recorded investment of $12,796 with a valuation allowance of $1,473, at June 30, 2014, and a recorded investment of $13,528, with a valuation allowance of $1,644, at December 31, 2013. The Company recorded a provision for loan loss expense of $181 and $359 on these loans during the three and six month periods ending June 30, 2014.
Other real estate owned had a decline in fair value of $885, $1,905, $1,680 and $2,667 during the three and six month periods ending June 30, 2014 and 2013, respectively. Changes in fair value were recorded directly to current earnings through non interest expense.
Bank property 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. The real estate was transferred at the lower of amortized cost or fair value less estimated costs to sell. The fair values were based upon comparative sales data provided by real estate brokers. The Company closed eight bank branch offices in April 2014, seven owned by the Company and one leased. Five of the properties owned by the Company were transferred to held-for-sale, the remaining two are being used as loan production offices, back office support staff offices and a portion of the second floor of one of the buildings is leased to an existing tenant. The Company recognized an impairment charge of $-0- and $2,326 during the three and six month periods ending June 30, 2014 related to the transfer to held-for-sale. Also during the first quarter of 2014, the Company recognized an additional impairment of $180 on a property previously transferred to held-for-sale in 2012.
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.
Deposits held for sale: The fair value disclosed is based on the contracted price for the sale of these 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 3 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 June 30, 2014	Carrying amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	516,009	$	516,009	$	—	$	—	$	516,009
Trading securities		89		—		89		—		89
Investment securities available for sale		542,149		—		542,149		—		542,149
FHLB and FRB stock		17,176		—		—		—		n/a
Loans held for sale		1,596		—		1,596		—		1,596
Loans, less allowance for loan losses of $19,200		2,376,819		—		—		2,383,572		2,383,572
FDIC indemnification asset		61,311		—		—		—		n/a
Interest rate swap derivatives		3,467		—		3,467		—		3,467
Accrued interest receivable		8,216		—		—		8,216		8,216
Financial liabilities:
Deposits- without stated maturities	$	2,595,030	$	2,595,030	$	—	$	—	$	2,595,030
Deposits- with stated maturities		526,313		—		529,428		—		529,428
Deposits held for sale		185,646		—		185,646		—		185,646
Securities sold under agreement to repurchase		33,619		—		33,619		—		33,619
Federal funds purchased		43,080		—		43,080		—		43,080
Corporate debentures		23,829		—		—		19,888		19,888
Interest rate swap derivatives		3,796		—		3,796		—		3,796
Accrued interest payable		411		—		411		—		411
			Fair value measurements
at December 31, 2013	Carrying amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	174,889	$	174,889	$	—	$	—	$	174,889
Trading securities		—		—		—		—		—
Investment securities available for sale		457,086		—		457,086		—		457,086
FHLB and FRB stock		8,189		—		—		—		n/a
Loans held for sale		1,010		—		1,010		—		1,010
Loans, less allowance for loan losses of $20,454		1,453,725		—		—		1,456,295		1,456,295
FDIC indemnification asset		73,433		—		—		—		n/a
Interest rate swap derivatives		2,603		—		2,603		—		2,603
Accrued interest receivable		6,337		—		—		6,337		6,337
Financial liabilities:
Deposits- without stated maturities	$	1,671,356	$	1,671,356	$	—	$	—	$	1,671,356
Deposits- with stated maturities		384,875		—		389,115		—		389,115
Securities sold under agreement to repurchase		20,457		—		20,457		—		20,457
Federal funds purchased		29,909		—		29,909		—		29,909
Corporate debentures		16,996		—		—		11,091		11,091
Interest rate swap derivatives		2,496		—		2,496		—		2,496
Accrued interest payable		333		—		333		—		333

Reportable_Segments

Reportable Segments	6 Months Ended
	Jun. 30, 2014
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 six month periods ending June 30, 2014 and 2013.
	Three month period ending June 30, 2014
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	32,333		$	746		$	—					$	33,079
	Interest expense		(1,578	)		(6	)		(238	)					(1,822	)
	Net interest income (expense)		30,755			740			(238	)					31,257
	Recovery of prior loan loss provision		106			—			—						106
	Non interest income		1,087			5,285			—						6,372
	Non interest expense		(30,215	)		(5,063	)		(875	)					(36,153	)
	Net income (loss) before taxes		1,733			962			(1,113	)					1,582
	Income tax (provision) benefit		(589	)		(371	)		415						(545	)
	Net income (loss)	$	1,144		$	591		$	(698	)				$	1,037
	Total assets	$	3,716,281		$	173,516		$	495,677		$	(483,892	)	$	3,901,582
	Six month period ending June 30, 2014
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	61,403		$	1,458		$	—					$	62,861
	Interest expense		(2,939	)		(11	)		(461	)					(3,411	)
	Net interest income (expense)		58,464			1,447			(461	)					59,450
	Recovery of prior loan loss provision		147			—			—						147
	Non interest income		2,916			9,216			—						12,132
	Non interest expense		(57,382	)		(9,441	)		(1,733	)					(68,556	)
	Net income (loss) before taxes		4,145			1,222			(2,194	)					3,173
	Income tax (provision) benefit		(1,438	)		(471	)		826						(1,083	)
	Net income (loss)	$	2,707		$	751		$	(1,368	)				$	2,090
	Total assets	$	3,716,281		$	173,516		$	495,677		$	(483,892	)	$	3,901,582
	Three month period ending June 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	23,875		$	612		$	—			—		$	24,487
	Interest expense		(1,352	)		(5	)		(150	)		—			(1,507	)
	Net interest income (expense)		22,523			607			(150	)		—			22,980
	Provision for loan losses		(1,374	)		—			—			—			(1,374	)
	Non interest income		4,254			5,609			—			—			9,863
	Non interest expense		(21,212	)		(5,363	)		(798	)		—			(27,373	)
	Net income before taxes		4,191			853			(948	)		—			4,096
	Income tax (provision) benefit		(1,368	)		(329	)		359			—			(1,338	)
	Net income (loss)	$	2,823		$	524		$	(589	)		—		$	2,758
	Total assets	$	2,201,379		$	150,679		$	293,127		$	(289,832	)	$	2,355,353
	Six month period ending June 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	47,473		$	1,392		$	—			—		$	48,865
	Interest expense		(2,752	)		(11	)		(300	)		—			(3,063	)
	Net interest income		44,721			1,381			(300	)		—			45,802
	Provision for loan losses		(1,014	)		—			—			—			(1,014	)
	Non interest income		7,528			12,614			—			—			20,142
	Non interest expense		(41,297	)		(11,438	)		(1,728	)		—			(54,463	)
	Net income before taxes		9,938			2,557			(2,028	)		—			10,467
	Income tax (provision) benefit		(3,066	)		(986	)		919			—			(3,133	)
	Net income (loss)	$	6,872		$	1,571		$	(1,109	)		—		$	7,334
	Total assets	$	2,201,379		$	150,679		$	293,127		$	(289,832	)	$	2,355,353
	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 68 full service banking locations in 21 counties throughout Florida providing traditional deposit and lending products and services to its commercial and retail customers.
Correspondent banking and capital markets division: Operating as a division of our subsidiary bank, its primary revenue generating activities are related to the capital markets division which includes commissions earned on fixed income security sales, fees from hedging services, loan brokerage fees and consulting fees for services related to these activities. Income generated related to the correspondent banking services includes spread income earned on correspondent bank deposits (i.e. federal funds purchased) and fees generated from safe-keeping activities, bond accounting services, asset/liability consulting services, international wires, clearing and corporate checking account services and other correspondent banking related services. The fees derived from the correspondent banking services are less volatile than those generated through the capital markets group. 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	6 Months Ended
	Jun. 30, 2014
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:
		June 30, 2014
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	4	$	—	$	—	$	4
	Mortgage backed securities		501,286		6,494		5,190		502,590
	Municipal securities		38,267		1,428		140		39,555
	Total	$	539,557	$	7,922	$	5,330	$	542,149
		December 31, 2013
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	4	$	—	$	—	$	4
	Mortgage backed securities		424,654		4,623		12,396		416,881
	Municipal securities		39,728		921		448		40,201
	Total	$	464,386	$	5,544	$	12,844	$	457,086
	The cost of securities sold is determined using the specific identification method. The securities sold during the first quarter of 2014 were securities acquired through the Gulfstream acquisition and the securities sold during the second quarter of 2014 included the securities acquired through the First Southern acquisition. These acquired securities were marked to fair value and subsequently sold after the acquisition date, therefore no gain or loss was recognized from the sale of these securities. Sales of available for sale securities for the six months ended June 30, 2014 and 2013 were as follows:
	For the six months ended:	June 30, 2014		June 30, 2013
	Proceeds	$	323,542	$	68,892
	Gross gains		1,175		1,038
	Gross losses		1,129		—
	The tax provision related to these net realized gains was $18 and $400, respectively.
	The fair value of available for sale securities at June 30, 2014 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately.
	Investment securities available for sale:	Fair Value		Amortized
				Cost
	Due in one year or less	$	584	$	579
	Due after one year through five years		2,129		2,017
	Due after five years through ten years		14,358		13,878
	Due after ten years through thirty years		22,488		21,797
	Mortgage backed securities		502,590		501,286
	Total	$	542,149	$	539,557
	Securities pledged at June 30, 2014 and December 31, 2013 had a carrying amount (estimated fair value) of $145,760 and $108,528 respectively. These securities were pledged primarily to secure public deposits and repurchase agreements.
	At June 30, 2014 and December 31, 2013, 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 June 30, 2014 and December 31, 2013.
		June 30, 2014
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Mortgage backed securities	$	16,877	$	115	$	144,279	$	5,075	$	161,156	$	5,190
	Municipal securities		—		—		3,845		140		3,845		140
	Total temporarily impaired securities	$	16,877	$	115	$	148,124	$	5,215	$	165,001	$	5,330
		December 31, 2013
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Mortgage backed securities	$	239,641	$	10,221	$	18,793	$	2,175	$	258,434	$	12,396
	Municipal securities		7,603		333		1,010		115		8,613		448
	Total temporarily impaired securities	$	247,244	$	10,554	$	19,803	$	2,290	$	267,047	$	12,844
	At June 30, 2014, 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 June 30, 2014.
	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	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Loans	'
	NOTE 6: Loans
	The following table sets forth information concerning the loan portfolio by collateral types as of the dates indicated.
		June 30, 2014			31-Dec-13
	Total loans that are not PCI loans
	Real estate loans
	Residential	$	563,293		$	458,331
	Commercial		1,091,660			528,710
	Land, development and construction		78,444			62,503
	Total real estate		1,733,397			1,049,544
	Commercial		251,741			143,263
	Consumer and other loans		56,191			49,547
	Loans before unearned fees and deferred cost		2,041,329			1,242,354
	Net unearned fees and costs		820			404
	Total loans that are not PCI loans		2,042,149			1,242,758
	Total PCI loans (note 1)
	Real estate loans
	Residential		119,005			120,030
	Commercial		195,157			100,012
	Land, development and construction		27,885			6,381
	Total real estate		342,047			226,423
	Commercial		10,759			3,850
	Consumer and other loans		1,064			1,148
	Total PCI loans		353,870			231,421
	Allowance for loan losses for loans that are not PCI loans		(18,240	)		(19,694	)
	Allowance for loan losses for PCI loans		(960	)		(760	)
	Total loans, net of allowance for loan losses	$	2,376,819		$	1,453,725
	note 1: Purchased credit impaired (“PCI”) loans are being accounted for pursuant to ASC Topic 310-30.
	The following sets forth the covered FDIC loans included in the table above.
		June 30, 2014			Dec 31, 2013
	FDIC covered loans that are not PCI loans
	Real estate loans
	Residential	$	6,457		$	—
	Commercial		35,668			—
	Land, development and construction		857			—
	Total real estate		42,982			—
	Commercial		459			—
	Consumer and other loans		—			—
	FDIC covered loans, excluding PCI loans		43,441			—
	FDIC covered PCI loans (note 1)
	Real estate loans
	Residential		115,306			120,030
	Commercial		166,932			100,012
	Land, development and construction		20,509			6,381
	Total real estate		302,747			226,423
	Commercial		5,184			3,850
	Consumer and other loans		—			—
	Total FDIC covered PCI loans		307,931			230,273
	Allowance for loan losses for FDIC covered loans that are not PCI loans		—			—
	Allowance for loans losses for FDIC covered PCI loans		(960	)		(760	)
	Total covered loans, net of allowance for loan losses	$	350,412		$	229,513
	note 1: Purchased credit impaired (“PCI”) loans are being accounted for pursuant to ASC Topic 310-30.
	The Company acquired FDIC covered loans that are not PCI loans pursuant to the acquisition of FSB on June 1, 2014. Prior to the FSB acquisition, the Company’s FDIC covered loans were all PCI loans.
	The table below set forth the activity in the allowance for loan losses for the periods presented.
		Allowance for			Allowance for			Total
		loan losses for			loan losses on
		loans that are			PCI loans
		not PCI loans
	Three months ended June 30, 2014
	Balance at beginning of period	$	18,913		$	1,183		$	20,096
	Loans charged-off		(902	)		—			(902	)
	Recoveries of loans previously charged-off		112			—			112
	Net charge-offs		(790	)		—			(790	)
	Provision for loan losses		117			(223	)		(106	)
Balance at end of period	$	18,240		$	960		$	19,200
Three months ended June 30, 2013
Balance at beginning of period	$	22,631		$	2,623		$	25,254
Loans charged-off		(2,603	)		(515	)		(3,118	)
Recoveries of loans previously charged-off		310			—			310
Net charge-offs		(2,293	)		(515	)		(2,808	)
Provision for loan losses		1,462			(88	)		1,374
Balance at end of period	$	21,800		$	2,020		$	23,820
	Allowance for			Allowance for			Total
	loan losses for			loan losses on
	loans that are			PCI loans
	not PCI loans
Six months ended June 30, 2014
Balance at beginning of period	$	19,694		$	760		$	20,454
Loans charged-off		(2,062	)		—			(2,062	)
Recoveries of loans previously charged-off		955			—			955
Net charge-offs		(1,107	)		—			(1,107	)
Provision for loan losses		(347	)		200			(147	)
Balance at end of period	$	18,240		$	960		$	19,200
Six months ended June 30, 2013
Balance at beginning of period	$	24,033		$	2,649		$	26,682
Loans charged-off		(3,834	)		(515	)		(4,349	)
Recoveries of loans previously charged-off		473			—			473
Net charge-offs		(3,361	)		(515	)		(3,876	)
Provision for loan losses		1,128			(114	)		1,014
Balance at end of period	$	21,800		$	2,020		$	23,820
The following tables present the activity in the allowance for loan losses by portfolio segment for the periods presented.
	Real Estate Loans
	Residential			Commercial			Land,			Comm. &			Consumer			Total
							develop.,			industrial			& other
							constr.
Allowance for loan losses for loan that are not PCI loans:
Three months ended June 30, 2014
Beginning of the period	$	7,812		$	7,338		$	1,788		$	956		$	1,019		$	18,913
Charge-offs		(228	)		(299	)		(23	)		(67	)		(285	)		(902	)
Recoveries		(20	)		61			25			3			43			112
Provision for loan losses		255			444			(1,156	)		208			366			117
Balance at end of period	$	7,819		$	7,544		$	634		$	1,100		$	1,143		$	18,240
Three months ended June 30, 2013
Beginning of the period	$	8,100		$	7,093		$	5,326		$	1,224		$	888		$	22,631
Charge-offs		(1,569	)		(650	)		(144	)		(7	)		(233	)		(2,603	)
Recoveries		153			13			106			11			27			310
Provision for loan losses		3,107			(430	)		(1,217	)		(164	)		166			1,462
Balance at end of period	$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
	Real Estate Loans
	Residential			Commercial			Land,			Comm. &			Consumer			Total
							develop.,			industrial			& other
							constr.
Allowance for loan losses on PCI loans:
Three months ended June 30, 2014
Beginning of the period	$	—		$	623		$	89		$	471		$	—		$	1,183
Charge-offs		—			—			—			—			—			—
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(101	)		(12	)		(110	)		—			(223	)
Balance at end of period	$	—		$	522		$	77		$	361		$	—		$	960
Three months ended June 30, 2013
Beginning of the period	$	—		$	2,310		$	—		$	313		$	—		$	2,623
Charge-offs		—			(515	)		—			—			—			(515	)
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(218	)		130			—			—			(88	)
Balance at end of period	$	—		$	1,577		$	130		$	313		$	—		$	2,020
Allowance for loan losses for loan that are not PCI loans:
Six months ended June 30, 2014
Beginning of the period	$	8,785		$	6,441		$	3,069		$	510		$	889		$	19,694
Charge-offs		(915	)		(315	)		(100	)		(267	)		(465	)		(2,062	)
Recoveries		435			375			48			4			93			955
Provision for loan losses		(486	)		1,043			(2,383	)		853			626			(347	)
Balance at end of period	$	7,819		$	7,544		$	634		$	1,100		$	1,143		$	18,240
Six months ended June 30, 2013
Beginning of the period	$	6,831		$	8,272		$	6,211		$	1,745		$	974		$	24,033
Charge-offs		(2,181	)		(1,074	)		(183	)		(59	)		(337	)		(3,834	)
Recoveries		233			40			120			21			59			473
Provision for loan losses		4,908			(1,212	)		(2,077	)		(643	)		152			1,128
Balance at end of period	$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
Allowance for loan losses on PCI loans:
Six months ended June 30, 2014
Beginning of the period	$	—		$	138		$	89		$	533		$	—		$	760
Charge-offs		—			—			—			—			—			—
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			384			(12	)		(172	)		—			200
Balance at end of period	$	—		$	522		$	77		$	361		$	—		$	960
Six months ended June 30, 2013
Beginning of the period	$	—		$	2,335		$	—		$	314		$	—		$	2,649
Charge-offs		—			(515	)		—			—			—			(515	)
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(243	)		130			(1	)		—			(114	)
Balance at end of period	$	—		$	1,577		$	130		$	313		$	—		$	2,020
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 June 30, 2014 and December 31, 2013. 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 June 30, 2014	Residential			Commercial			Land,			Comm. &			Consumer			Total
							develop.,			industrial			& other
							constr.
Allowance for loan losses:
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$	559		$	1,262		$	6		$	10		$	20		$	1,857
Collectively evaluated for impairment		7,260			6,282			628			1,090			1,123			16,383
Purchased credit impaired		0			522			77			361			0			960
Total ending allowance balance	$	7,819		$	8,066		$	711		$	1,461		$	1,143		$	19,200
Loans:
Loans individually evaluated for impairment	$	9,725		$	13,028		$	2,068		$	2,127		$	315		$	27,263
Loans collectively evaluated for impairment		553,568			1,078,632			76,376			249,614			55,876			2,014,066
Purchased credit impaired loans		119,005			195,157			27,885			10,759			1,064			353,870
Total ending loan balances	$	682,298		$	1,286,817		$	106,329		$	262,500		$	57,255		$	2,395,199
	Real Estate Loans
As of December 31, 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	$	395		$	1,377		$	16		$	2		$	21		$	1,811
Collectively evaluated for impairment		8,390			5,064			3,053			508			868			17,883
Purchased credit impaired		—			138			89			533			—			760
Total ending allowance balance	$	8,785		$	6,579		$	3,158		$	1,043		$	889		$	20,454
Loans:
Loans individually evaluated for impairment	$	8,610		$	12,564		$	1,307		$	1,297		$	332		$	24,110
Loans collectively evaluated for impairment		449,721			516,146			61,196			141,966			49,215			1,218,244
Purchased credit impaired loans		120,030			100,012			6,381			3,850			1,148			231,421
Total ending loan balance	$	578,361		$	628,722		$	68,884		$	147,113		$	50,695		$	1,473,775
Loans collectively evaluated for impairment reported at June 30, 2014 include loans acquired from FSB on June 1, 2014 and from Gulfstream on January 17, 2014. The acquired loans were recorded at estimated fair value at acquisition; therefore, no allowance for loan losses was recorded for these loans at June 30, 2014.
The table below summarizes impaired loan data for the periods presented.
	June 30, 2014			Dec 31, 2014
Performing TDRs (these are not included in NPLs)	$	12,659		$	10,763
Non performing TDRs (these are included in NPLs)		2,281			4,684
Total TDRs (these are included in impaired loans)	$	14,940		$	15,447
Impaired loans that are not TDRs		12,323			8,663
Total impaired loans	$	27,263		$	24,110
In certain situations 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 the terms of a loan have been modified, usually the monthly payment and/or interest rate is reduced for generally twelve to twenty-four months. Material principal amounts on any loan modifications have not been forgiven to date.
TDRs as of June 30, 2014 and December 31, 2013 quantified by loan type classified separately as accrual (performing loans) and non-accrual (non performing loans) are presented in the tables below.
As of June 30, 2014	Accruing			Non Accrual			Total
Real estate loans:
Residential	$	7,932		$	806		$	8,738
Commercial		3,247			1,292			4,539
Land, development, construction		569			43			612
Total real estate loans		11,748			2,141			13,889
Commercial		699			37			736
Consumer and other		212			103			315
Total TDRs	$	12,659		$	2,281		$	14,940
As of December 31, 2013	Accruing			Non-Accrual			Total
Real estate loans:
Residential	$	7,221		$	1,389		$	8,610
Commercial		2,169			3,077			5,246
Land, development, construction		608			47			655
Total real estate loans		9,998			4,513			14,511
Commercial		555			49			604
Consumer and other		210			122			332
Total TDRs	$	10,763		$	4,684		$	15,447
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 $339 and $398 and partial charge offs of $40 and $96 on the TDR loans described above during the three and six month periods ending June 30, 2014.
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 85% of our TDRs are current pursuant to their modified terms, and $2,281, or approximately 15% 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 June 30, 2014 and December 31, 2013.
	Period ending						Year ending
	June 30, 2014						December 31, 2013
	Number			Recorded			Number			Recorded
	of loans			investment			of loans			investment
Residential		—		$	—			3		$	553
Commercial real estate		1			196			6			2,244
Land, development, construction		—			—			—			—
Commercial and Industrial		—			—			2			34
Consumer and other		—			—			1			17
Total		1		$	196			12		$	2,848
The Company recorded a provision for loan loss expense of $18 and $30 and partial charge offs of $-0- and $4 on TDR loans that subsequently defaulted as described above during the three and six month periods ending June 30, 2014.
The following tables present loans individually evaluated for impairment by class of loans as of June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans accounted for pursuant to ASC Topic 310-30. The recorded investment is less than the unpaid principal balance due to partial charge-offs.
As of June 30, 2014	Unpaid			Recorded			Allowance
	principal			investment			for loan
	balance						losses
							allocated
With no related allowance recorded:
Residential real estate	$	7,253		$	6,992		$	—
Commercial real estate		6,920			6,812			—
Land, development, construction		2,550			1,938			—
Commercial and industrial		2,055			1,922			—
Consumer, other		—			—			—
With an allowance recorded:
Residential real estate		2,885			2,733			559
Commercial real estate		6,459			6,216			1,262
Land, development, construction		138			130			6
Commercial and industrial		251			205			10
Consumer, other		330			315			20
Total	$	28,841		$	27,263		$	1,857
As of December 31, 2013	Unpaid			Recorded			Allowance
	principal			investment			for loan
	balance						losses
							allocated
With no related allowance recorded:
Residential real estate	$	5,052		$	4,803		$	—
Commercial real estate		9,330			7,439			—
Land, development, construction		1,377			1,168			—
Commercial and industrial		1,330			1,241			—
Consumer, other		5			5			—
With an allowance recorded:
Residential real estate		3,942			3,807			395
Commercial real estate		5,257			5,125			1,377
Land, development, construction		147			139			16
Commercial and industrial		102			56			2
Consumer, other		340			327			21
Total	$	26,882		$	24,110		$	1,811
Three month period ending June, 30, 2014	Average of			Interest			Cash basis
	impaired			income			interest
	loans			recognized			income
				during			recognized
				impairment
Real estate loans:
Residential	$	9,635		$	87		$	—
Commercial		12,858			43			—
Land, development, construction		1,764			10			—
Total real estate loans		24,257			140			—
Commercial and industrial		2,332			18			—
Consumer and other loans		320			3			—
Total	$	26,909		$	161		$	—
Six month period ending June, 30, 2014	Average of			Interest			Cash basis
	impaired			income			interest
	loans			recognized			income
				during			recognized
				impairment
Real estate loans:
Residential	$	9,358		$	164		$	—
Commercial		12,742			71			—
Land, development, construction		1,575			19			—
Total real estate loans		23,675			254			—
Commercial and industrial		2,126			39			—
Consumer and other loans		324			6			—
Total	$	26,125		$	299		$	—
Three month period ending June, 30, 2013	Average of			Interest			Cash basis
	impaired			income			interest
	loans			recognized			income
				during			recognized
				impairment
Real estate loans:
Residential	$	8,777		$	70		$	—
Commercial		27,192			288			—
Land, development, construction		1,407			6			—
Total real estate loans		37,376			364			—
Commercial and industrial		1,656			8			—
Consumer and other loans		366			3			—
Total	$	39,398		$	375		$	—
Six month period ending June, 30, 2013	Average of			Interest			Cash basis
	impaired			income			interest
	loans			recognized			income
				during			recognized
				impairment
Real estate loans:
Residential	$	9,108		$	143		$	—
Commercial		28,730			545			—
Land, development, construction		1,417			8			—
Total real estate loans		39,255			696			—
Commercial and industrial		2,124			16			—
Consumer and other loans		378			6			—
Total	$	41,757		$	718		$	—
Nonperforming loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans, excluding purchased credit impaired loans accounted for pursuant to ASC Topic 310-30.
Nonperforming loans were as follows:	June 30, 2014			Dec 31, 2013
Non accrual loans	$	29,667		$	27,077
Loans past due over 90 days and still accruing interest		—			—
Total non performing loans	$	29,667		$	27,077
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 June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans:
As of June 30, 2014	Nonaccrual			Loans past due
				over 90 days
				still accruing
Residential real estate	$	11,292		$	—
Commercial real estate		13,991			—
Land, development, construction		1,900			—
Commercial		2,216			—
Consumer, other		268			—
Total	$	29,667		$	—
As of December 31, 2013	Nonaccrual			Loans past due
				over 90 days
				still accruing
Residential real estate	$	10,162		$	—
Commercial real estate		13,925			—
Land, development, construction		1,099			—
Commercial		1,582			—
Consumer, other		309			—
Total	$	27,077		$	—
The following table presents the aging of the recorded investment in past due loans as of June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans:
	Accruing Loans
As of June 30, 2014	Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
				days			days			than 90			Due			Past Due			Loans
				past due			past due			days past
										due
Residential real estate	$	563,293		$	2,402		$	1,892		$	—		$	4,294		$	547,707		$	11,292
Commercial real estate		1,091,660			3,001			473			—			3,474			1,074,195			13,991
Land/dev/construction		78,444			1,866			254			—			2,120			74,424			1,900
Commercial		251,741			1,909			1,048			—			2,957			246,568			2,216
Consumer		56,191			225			80			—			305			55,618			268
	$	2,041,329		$	9,403		$	3,747		$	—		$	13,150		$	1,998,512		$	29,667
	Accruing Loans
As of December 31, 2013	Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
				days			days			than 90			Due			Past Due			Loans
				past due			past due			days past
										due
Residential real estate	$	458,331		$	2,801		$	1,942		$	—		$	4,743		$	443,426		$	10,162
Commercial real estate		528,710			2,420			1,941			—			4,361			510,424			13,925
Land/dev/construction		62,503			136			241			—			377			61,027			1,099
Commercial		143,263			491			1			—			492			141,189			1,582
Consumer		49,547			295			240			—			535			48,703			309
	$	1,242,354		$	6,143		$	4,365		$	—		$	10,508		$	1,204,769		$	27,077
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. As of June 30, 2014 and December 31, 2013, and based on the most recent analysis performed, the risk category of loans by class of loans, excluding purchased credit impaired loans accounted for pursuant to ASC Topic 310-30:
	As of June 30, 2014
Loan Category	Pass			Special			Substandard			Doubtful
				Mention
Residential real estate	$	534,622		$	5,313		$	23,358		$	—
Commercial real estate		1,012,363			39,951			39,346			—
Land/dev/construction		66,080			8,637			3,727			—
Commercial		243,632			2,586			5,523			—
Consumer		55,491			274			426			—
Total	$	1,912,188		$	56,761		$	72,380		$	—
	As of December 31, 2013
Loan Category	Pass			Special			Substandard			Doubtful
				Mention
Residential real estate	$	428,671		$	6,438		$	23,222		$	—
Commercial real estate		448,762			46,427			33,521			—
Land/dev/construction		50,164			9,566			2,773			—
Commercial		134,901			4,490			3,872			—
Consumer		49,448			526			573			—
Total	$	1,110,946		$	67,447		$	63,961		$	—
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 purchased credit impaired loans, based on payment activity as of June 30, 2014 and December 31, 2013:
As of June 30, 2014	Residential			Consumer
Performing	$	552,001		$	55,923
Nonperforming		11,292			268
Total	$	563,293		$	56,191
As of December 31, 2013	Residential			Consumer
Performing	$	448,169		$	49,238
Nonperforming		10,162			309
Total	$	458,331		$	49,547
Purchased Credit Impaired (“PCI”) loans:
Income is recognized on PCI loans 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 June 30, 2014 and December 31, 2013. Contractually required principal and interest payments have been adjusted for estimated prepayments.
	Jun 30, 2014			Dec 31, 2013
Contractually required principal and interest	$	566,948		$	389,537
Non-accretable difference		(79,985	)		(55,304	)
Cash flows expected to be collected		486,963			334,233
Accretable yield		(133,093	)		(102,812	)
Carrying value of acquired loans	$	353,870		$	231,421
Allowance for loan losses		(960	)		(760	)
Carrying value less allowance for loan losses	$	352,910		$	230,661
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 $7,946 and $15,240 from non-accretable difference to accretable yield during the three and six month periods ending June 30, 2014, 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 six month periods ending June 30, 2014 and 2013.
Activity during the three month period ending June 30, 2014	Mar 31, 2014			Effect of			income			all other			June 30, 2014
				acquisitions			accretion			adjustments
Contractually required principal and interest	$	414,385		$	180,960		$	—		$	(28,397	)	$	566,948
Non-accretable difference		(56,062	)		(33,527	)		—			9,604			(79,985	)
Cash flows expected to be collected		358,323			147,433			—			(18,793	)		486,963
Accretable yield		(107,523	)		(25,749	)		8,231			(8,052	)		(133,093	)
Carry value of acquired loans	$	250,800			121,684			8,231		$	(26,845	)	$	353,870
Activity during the six month period ending June 30, 2014	31-Dec-13			Effect of			income			all other			June 30, 2014
				acquisitions			accretion			adjustments
Contractually required principal and interest	$	389,537		$	229,249		$	—		$	(51,838	)	$	566,948
Non-accretable difference		(55,304	)		(45,293	)		—			20,612			(79,985	)
Cash flows expected to be collected		334,233			183,956			—			(31,226	)		486,963
Accretable yield		(102,812	)		(32,204	)		16,462			(14,539	)		(133,093	)
Carry value of acquired loans	$	231,421			151,752			16,462			(45,765	)	$	353,870
Activity during the three month period ending June 30, 2013	Mar 31, 2013			income			all other			June 30, 2013
				accretion			adjustments
Contractually required principal and interest	$	486,531			—		$	(37,385	)	$	449,146
Non-accretable difference		(110,243	)		—			20,183			(90,060	)
Cash flows expected to be collected		376,288			—			(17,202	)		359,086
Accretable yield		(95,499	)		8,020			(11,928	)		(99,407	)
Carry value of acquired loans	$	280,789		$	8,020		$	(29,130	)	$	259,679
Activity during the six month period ending June 30, 2013	31-Dec-12			income			all other			30-Jun-13
				accretion			adjustments
Contractually required principal and interest	$	534,989			—		$	(85,843	)	$	449,146
Non-accretable difference		(142,855	)		—			52,795			(90,060	)
Cash flows expected to be collected		392,134			—			(33,048	)		359,086
Accretable yield		(93,107	)		15,847			(22,147	)		(99,407	)
Carry value of acquired loans	$	299,027		$	15,847		$	(55,195	)	$	259,679

FDIC_Indemnification_Asset

FDIC Indemnification Asset	6 Months Ended
	Jun. 30, 2014
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, the acquisition of two failed banks in 2012 and the assumption of Loss Share Agreements of two failed banks assumed by the Company pursuant to its acquisition of First Southern Bank in June 2014. The activity in the FDIC loss share indemnification asset is as follows (certain items related to true-up payment liabilities per the FDIC agreements, which had previously been netted with the FDIC indemnification asset, have been reclassified as a separate liability):
		Six month			Twelve month
		period ended			period ended
		June 30, 2014			31-Dec-13
	Beginning of the year	$	73,877		$	119,691
	Effect of acquisition		2,636			—
	Amortization, net		(10,161	)		(13,765	)
	Indemnification revenue		1,529			6,055
	Indemnification of foreclosure expense		780			4,413
	Proceeds from FDIC		(7,510	)		(42,004	)
	Impairment (recovery) of loan pool		160			(513	)
	Period end balance	$	61,311		$	73,877
	The FDIC agreements allow for the recovery of some payments made for loss share reimbursements under certain conditions based on the actual performance of the portfolios acquired. This true-up payment is estimated and accrued for as part of the overall FDIC indemnification asset analysis and is reflected as a separate liability. The accrual for this liability is reflected as additional amortization income or expense in noninterest income. The activity in the true-up payment liability is as follows:
		Six month			Twelve month
		period ended			period ended
		June 30, 2014			31-Dec-13
	Beginning of the year	$	444		$	402
	Effect of acquisition		682			—
	True-up liability accrual		30			42
	Period end balance	$	1,156		$	444
	Impairment of loan pools
	When a loan pool (with loss share) is impaired, the impairment expense is included in provision for loan losses, and the percentage of that loss to be reimbursed by the FDIC is recognized as income from FDIC reimbursement, and included in this line item. During the six month period ended June 30, 2014, the estimated amount of impairment increased, which resulted in an additional $160 of indemnification income recognition.
	Indemnification revenue
	Indemnification revenue represents the percentage of the cost incurred that is reimbursable by the FDIC pursuant to the related Loss Share Agreement for expenses related to the repossession process and losses incurred on the sale of OREO, or writedown of OREO values to current fair value.
	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. The Company also 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 the percentage of 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.

Business_Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	NOTE 8: Business Combinations
	Acquisition of Gulfstream Bancshares, Inc.
	On January 17, 2014, the Company completed its previously announced acquisition of Gulfstream Bancshares, Inc. (“Gulfstream”) as set forth in the Agreement and Plan of Merger (“Agreement”) whereby Gulfstream merged with and into the Company. Pursuant to and simultaneously with the merger of Gulfstream with and into the Company, Gulfstream’s wholly owned subsidiary bank, Gulfstream Business Bank (“GSB”), merged with and into the Company’s subsidiary bank, CenterState Bank of Florida, N.A.
	The Company’s primary reasons for the transaction were to further solidify its market share in the southeast Florida market and expand its customer base to enhance deposit fee income and leverage operating cost through economies of scale. The acquisition increased the Company’s total assets and total deposits by approximately 23% and 23%, respectively, as compared with the balances at December 31, 2013, and is expected to positively affect the Company’s operating results to the extent the Company earns more from interest earning assets than it pays in interest on its interest bearing liabilities.
	The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill on this acquisition of $31,516, after consideration of a measurement period adjustment discussed below, which is nondeductible for tax purposes as this acquisition is a nontaxable transaction. The goodwill is calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. Fair value estimates are based on the information available, and are subject to change for up to one year after the closing date of the acquisition as additional information relative to closing date fair values becomes available. Fair values are preliminary estimates due to pending appraisals on loans and other real estate owned.
	The Company acquired 100% of the outstanding common stock of Gulfstream. The purchase price consisted of both cash and stock. Each share of Gulfstream common stock was exchanged for $14.65 cash and 3.012 shares of the Company’s common stock. Based on the closing price of the Company’s common stock on January 16, 2014, the resulting purchase price was $82,040. The table below summarizes the purchase price calculation.
	Number of shares of Gulfstream common stock outstanding at January 16, 2014		1,569,364
	Gulfstream preferred shares that convert to Gulfstream common shares upon a change in control		155,629
	Total Gulfstream common shares including conversion of preferred shares		1,724,993
	Per share exchange ratio		3.012
	Number of shares of CenterState common stock less 138 of fractional shares		5,195,541
	Multiplied by CenterState common stock price per share on January 16, 2014	$	10.23
	Fair value of CenterState common stock issued	$	53,150
	Total Gulfstream common shares including conversion of preferred shares		1,724,993
	Multiplied by the cash consideration each Gulfstream share is entitled to receive	$	14.65
	Total Cash Consideration, not including cash for fractional shares	$	25,271
	Total Stock Consideration	$	53,150
	Total Cash Consideration plus $2 for 138 of fractional shares		25,273
	Total consideration to be paid to Gulfstream common shareholders	$	78,423
	Fair value of current Gulfstream stock options to be converted to CenterState stock options		3,617
	Total purchase price	$	82,040
	The list below summarizes the preliminary estimates of the fair value of the assets purchased, including goodwill, and liabilities assumed as of the January 17, 2014 purchase date.
		Jan 17, 2014
	Assets:
	Cash and cash equivalents	$	102,278
	Loans, held for investment		329,515
	Purchased credit impaired loans		30,068
	Loans held for sale		247
	Investments		60,816
	Interest receivable		1,087
	Branch real estate		5,519
	Furniture and fixtures		262
	FHLB stock		885
	Bank owned life insurance		4,939
	Other repossessed real estate owned		2,694
	Core deposit intangible		4,173
	Goodwill		31,516
	Other assets		11,261
	Total assets acquired	$	585,260
	Liabilities:
	Deposits	$	478,999
	Federal Home loan advances		5,708
	Repurchase agreements		7,576
	Interest payable		125
	Official checks outstanding		826
	Corporate debentures		6,745
	Other liabilities		3,241
	Total liabilities assumed	$	503,220
	In the acquisition, the Company purchased $359,583 of loans at fair value, net of $18,267, or 4.8%, estimated discount to the outstanding principal balance, representing 24.4% of the Company’s total loans at December 31, 2013. Of the total loans acquired, management identified $30,068 with credit deficiencies. All loans that were on non-accrual status and all loan relationships that were greater than $500 and identified as impaired as of the acquisition date were considered by management to be credit impaired and are accounted for pursuant to ASC Topic 310-30. The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of January 17, 2014 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.
	Contractually required principal and interest	$	48,289
	Non-accretable difference		(11,766	)
	Cash flows expected to be collected		36,523
	Accretable yield		(6,455	)
	Total purchased credit-impaired loans acquired	$	30,068
	The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.
		Book			Fair
		balance			value
	Loans:
	Single family residential real estate		33,506			32,319
	Commercial real estate		185,250			183,189
	Construction/development/land		30,387			27,704
	Commercial loans		85,940			84,203
	Consumer and other loans		2,112			2,100
Purchased credit-impaired		40,655			30,068
Total earning assets	$	377,850		$	359,583
In its assumption of the deposit liabilities, the Company believed the deposits assumed from the acquisition have an intangible value. The Company applied ASC Topic 805, which prescribes the accounting for goodwill and other intangible assets such as core deposit intangibles, in a business combination. The Company determined the estimated fair value of the core deposit intangible asset totaled $4,173, which will be amortized utilizing an accelerated amortization method over an estimated economic life not to exceed ten years. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships.
Measurement period adjustments
On January 17, 2014 the Company purchased Gulfstream. As previously disclosed, the fair values initially assigned to the assets acquired and liabilities assumed were preliminary and subject to refinement for up to one year after the closing date of the acquisition as new information relative to closing date fair values became available. Based on appraisals received subsequent to the acquisition date, the Company adjusted its initial fair value estimates of certain other real estate owned acquired.
	Jan 17, 2014 (as			measurement			Jan 17, 2014
	initially reported)			period			(as adjusted)
				adjustments
Assets:
Cash and cash equivalents	$	102,278		$	—		$	102,278
Loans, held for investment		329,515						329,515
Purchased credit impaired loans		30,068						30,068
Loans held for sale		247						247
Investments		60,816						60,816
Interest receivable		1,087						1,087
Branch real estate		5,519						5,519
Furniture and fixtures		262						262
FHLB stock		885						885
Bank owned life insurance		4,939						4,939
Other repossessed real estate owned		3,365			(671	)		2,694
Core deposit intangible		4,173						4,173
Goodwill		31,104			412			31,516
Other assets		11,002			259			11,261
Total assets acquired	$	585,260		$	—		$	585,260
Liabilities:
Deposits	$	478,999		$	—		$	478,999
Federal Home loan advances		5,708						5,708
Repurchase agreements		7,576						7,576
Interest payable		125						125
Official checks outstanding		826						826
Trust Preferred Security		6,745						6,745
Other liabilities		3,241						3,241
Total liabilities assumed	$	503,220		$	—		$	503,220
Acquisition of First Southern Bancorp, Inc.
On June 1, 2014, the Company completed its previously announced acquisition of First Southern Bancorp, Inc. (“FSB”) as set forth in the Agreement and Plan of Merger (“Agreement”) whereby FSB merged with and into the Company. Pursuant to and simultaneously with the merger of FSB with and into the Company, FSB’s subsidiary bank, First Southern Bank, merged with and into the Company’s subsidiary bank, CenterState Bank of Florida, N.A.
The Company’s primary reasons for the transaction were to further solidify its market share in the southeast Florida market as well as in central and northeastern Florida and expand its customer base to enhance deposit fee income and leverage operating cost through economies of scale. The acquisition increased the Company’s total assets and total deposits by approximately 32% and 33%, respectively, as compared with the balances at March 31, 2014, and is expected to positively affect the Company’s operating results to the extent the Company earns more from interest earning assets than it pays in interest on its interest bearing liabilities.
The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill on this acquisition of $541, which is nondeductible for tax purposes as this acquisition is a nontaxable transaction. The goodwill is calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. Fair value estimates are based on the information available, and are subject to change for up to one year after the closing date of the acquisition as additional information relative to closing date fair values becomes available. Fair values are preliminary estimates due to pending appraisals on loans and other real estate owned.
The Company acquired 100% of the outstanding common stock of FSB. The purchase price consisted of both cash and stock. Each share of FSB common stock was exchanged for $3.00 cash and 0.30 shares of the Company’s common stock. Based on the closing price of the Company’s common stock on May 30, 2014 (the last trading day prior to the June 1, 2014 acquisition date), the resulting purchase price was $195,404. The table below summarizes the purchase price calculation.
Number of shares of FSB common stock outstanding at May 30, 2014		31,539,698
FSB preferred shares that convert to FSB common shares upon a change in control		48,375
Total FSB common shares including conversion of preferred shares		31,588,073
Per share exchange ratio		0.3
Number of shares of CenterState common stock		9,476,424
Multiplied by CenterState common stock price per share on May 30, 2014	$	10.62
Fair value of CenterState common stock issued	$	100,639
Total FSB common shares including conversion of preferred shares		31,588,073
Multiplied by the cash consideration each FSB share is entitled to receive	$	3
Total Cash Consideration	$	94,765
Total Stock Consideration	$	100,639
Total Cash Consideration		94,765
Total purchase price	$	195,404
The list below summarizes the preliminary estimates of the fair value of the assets purchased, including goodwill, and liabilities assumed as of the June 1, 2014 purchase date.
	June 1, 2014
Assets:
Cash and cash equivalents	$	148,257
Loans, excluding purchased credit impaired loans		477,841
Purchased credit impaired loans		121,684
Investments		204,723
Interest receivable		2,007
Branch real estate		1,594
Furniture and fixtures		1,282
Bank property held for sale		7,119
Federal Reserve Bank and Federal Home Loan Bank stock		5,576
Bank owned life insurance		2,555
Other repossessed real estate owned covered by FDIC loss share agreements		22,731
Other repossessed real estate owned		454
Core deposit intangible		7,396
Goodwill		541
Deferred tax asset		43,889
Other assets		4,581
Total assets acquired	$	1,052,230
Liabilities:
Deposits	$	662,959
Deposits held for sale		189,674
Interest payable		58
Other liabilities		4,135
Total liabilities assumed	$	856,826
In the acquisition, the Company purchased $599,525 of loans at fair value, net of $30,811, or 4.9%, estimated discount to the outstanding principal balance, representing 33% of the Company’s total loans at March 31, 2014. Of the total loans acquired, management identified $121,684 with credit deficiencies. All loans that were on non-accrual status, all TDRs, all impaired loans, all loans previously identified by FSB with credit deficiencies and any other loan identified by the Company with a probable credit deficiency were considered by management to be credit impaired and are accounted for pursuant to ASC Topic 310-30. The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of June 1, 2014 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.
Contractually required principal and interest	$	180,960
Non-accretable difference		(33,527	)
Cash flows expected to be collected		147,433
Accretable yield		(25,749	)
Total purchased credit-impaired loans acquired	$	121,684
The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.
	Book			Fair
	balance			value
Loans:
Single family residential real estate	$	60,332		$	57,693
Commercial real estate		387,589			382,162
Construction/development/land		17,238			15,942
Commercial loans		20,267			19,906
Consumer and other loans		2,496			2,138
Purchased credit-impaired		142,414			121,684
Total earning assets	$	630,336		$	599,525
In its assumption of the deposit liabilities, the Company believed the deposits assumed from the acquisition have an intangible value. The Company applied ASC Topic 805, which prescribes the accounting for goodwill and other intangible assets such as core deposit intangibles, in a business combination. The Company determined the estimated fair value of the core deposit intangible asset totaled $7,396, which will be amortized utilizing an accelerated amortization method over an estimated economic life not to exceed ten years. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships.
Pro-forma information
Pro-forma data for the three and six month periods ending June 30, 2013 listed in the table below presents pro-forma information as if the Gulfstream and FSB acquisitions occurred at the beginning of 2013. The pro-forma information for the three and six month periods ending June 30, 2014 assumes the FSB acquisition occurred at the beginning of 2013. Because the Gulfstream transaction closed on January 17, 2014 and their actual results are included in the Company’s actual operating results for 2014, their actual results were used in the table below for the three and six month periods ending June 30, 2014 instead of a pro-forma amount.
	Three months ended June 30,						Six months ended June 30,
	2013			2014			2013		2014
Net interest income	$	37,252		$	37,617		$	74,835	$	75,434
Net income available to common shareholders		5,129			5,277			11,525		8,524
EPS - basic	$	0.11		$	0.12		$	0.26	$	0.19
EPS - diluted	$	0.11		$	0.12		$	0.26	$	0.19
Disposition of certain branches acquired pursuant to the FSB acquisition.
On June 4, 2014, the Company entered into a Purchase and Assumption Agreement (“P&A Agreement”) with an unrelated bank (“Buyer”) whereby Buyer agreed to purchase and the Company agreed to sell five branch offices acquired by the Company pursuant to its June 1, 2014 acquisition of FSB, as described above. Under the terms of the P&A Agreement, the Buyer will assume substantially all of the customer deposits at the five branches. In addition, Buyer will assume substantially all of the customer deposits of a sixth branch but will not assume the branch lease. The deposits will be moved by Buyer to a new branch office located nearby, and the Company will close the existing leased branch office.
The purchase price will be approximately $6.5 million for the five branch offices and a premium of 1.5% for the approximately $200 million deposit balances to be assumed by the Buyer from all six branch offices. The Company is not selling, and the Buyer is not purchasing, any loans in the transaction. The consummation of the transaction is subject to customary regulatory approval and is expected to close in September 2014. The June 4, 2014 sales prices were used as the June 1, 2014 acquisition date fair values, therefore, the Company did not recognize an accounting gain or loss on the transaction.
In addition to the disposition of 6 of the acquired branches from FSB, the Company is closing and consolidating 4 additional acquired branches from FSB. Two of the branches are in leased facilities and the other two are owned by the Company as a result of its acquisition of FSB. The real estate, as well as the furniture, fixtures and equipment have been transferred to held-for-sale during June 2014 at estimated fair value less disposition expenses. The required customer notifications have been sent and the offices are expected to close on September 19, 2014, the same date the Company has scheduled to convert FSB’s core IT system to the Company’s core system.
In September, the Company will have 3 leased branch buildings that will no longer be in use. In addition, it will also have several other leased facilities used by FSB for loan operations, deposit operations and IT that will no longer be used as these functions will be consolidated into the Company’s backroom operations. The Company will either negotiate a lease termination with its related counterparty or accrue the remaining lease obligations. Once a written lease termination is recognized, the liability will be recognized in the Company’s financial statements. If there is no termination agreement, the remaining lease obligations will be recognized in the Company’s financial statement at the cease-use date, which is when the premise is completely vacated and the Company expects to derive no future economic benefit from the obligation. As such, no lease related expenses were included in the merger related expenses recognized during the quarter ended June 30, 2014. The Company expects to recognize approximately $1.8 million of expenses related to the termination or accrual of these lease obligations in the third and fourth quarter of the current year, with the majority of the expenses occurring in the third quarter.

Recently_Issued_Accounting_Sta

Recently Issued Accounting Standards	6 Months Ended
	Jun. 30, 2014
Accounting Changes And Error Corrections [Abstract]	'
Recently Issued Accounting Standards	'
	NOTE 9: Recently Issued Accounting Standards
	ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” was a joint project initiated by the Financial Accounting Standards Board (FASB) and the International Accounting Standards Board (IASB) to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosures for U.S. and international accounting standards that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosure requirements and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. The guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently evaluating the effects of this guidance on its financial statements and disclosures, if any.

Common_Stock_Outstanding_and_E1

Common Stock Outstanding and Earnings Per Share Data (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Numerator for basic and diluted earnings per share:
	Net income	$	1,037	$	2,758	$	2,090	$	7,334
	Denominator:
	Denominator for basic earnings per share - weighted-average shares		38,665,018		30,098,853		36,576,622		30,094,315
	Effect of dilutive securities:
	Stock options and stock grants		386,212		62,388		403,612		61,465
	Denominator for diluted earnings per share - adjusted weighted-average shares		39,051,230		30,161,241		36,980,234		30,155,780
	Basic earnings per share	$	0.03	$	0.09	$	0.06	$	0.24
	Diluted earnings per share	$	0.03	$	0.09	$	0.06	$	0.24

Fair_Value_Tables

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014
	Assets:
	Trading securities	$	89		—	$	89		—
	Available for sale securities
	U.S. government sponsored entities and agencies		4		—		4		—
	Mortgage backed securities		502,590		—		502,590		—
	Municipal securities		39,555		—		39,555		—
	Interest rate swap derivatives		3,467		—		3,467		—
	Liabilities:
	Interest rate swap derivatives		3,796		—		3,796		—
	at December 31, 2013
	Assets:
	Trading securities	$	—		—	$	—		—
	Available for sale securities
	U.S. government sponsored entities and agencies		4		—		4		—
	Mortgage backed securities		416,881		—		416,881		—
	Municipal securities		40,201		—		40,201		—
	Interest rate swap derivatives		2,603		—		2,603		—
	Liabilities:
	Interest rate swap derivatives		2,496		—		2,496		—
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 June 30, 2014
	Assets:
	Impaired loans
	Residential real estate	$	3,184		—		—	$	3,184
	Commercial real estate		6,058		—		—		6,058
	Land, land development and construction		1,248		—		—		1,248
	Commercial		683		—		—		683
	Consumer		150		—		—		150
	Other real estate owned
	Residential real estate	$	1,599		—		—	$	1,599
	Commercial real estate		3,741		—		—		3,741
	Land, land development and construction		1,913		—		—		1,913
	Bank property held for sale		6,049		—		—		6,049
	at December 31, 2013
	Assets:
	Impaired loans
	Residential real estate	$	3,191		—		—	$	3,191
	Commercial real estate		7,515		—		—		7,515
	Land, land development and construction		290		—		—		290
	Commercial		731		—		—		731
	Consumer		157		—		—		157
	Other real estate owned
	Residential real estate	$	27		—		—	$	27
	Commercial real estate		3,837		—		—		3,837
	Land, land development and construction		3,949		—		—		3,949
	Bank owned real estate held for sale		1,582		—		—		1,582
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 June 30, 2014	Carrying amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	516,009	$	516,009	$	—	$	—	$	516,009
	Trading securities		89		—		89		—		89
	Investment securities available for sale		542,149		—		542,149		—		542,149
	FHLB and FRB stock		17,176		—		—		—		n/a
	Loans held for sale		1,596		—		1,596		—		1,596
	Loans, less allowance for loan losses of $19,200		2,376,819		—		—		2,383,572		2,383,572
	FDIC indemnification asset		61,311		—		—		—		n/a
	Interest rate swap derivatives		3,467		—		3,467		—		3,467
	Accrued interest receivable		8,216		—		—		8,216		8,216
	Financial liabilities:
	Deposits- without stated maturities	$	2,595,030	$	2,595,030	$	—	$	—	$	2,595,030
	Deposits- with stated maturities		526,313		—		529,428		—		529,428
	Deposits held for sale		185,646		—		185,646		—		185,646
	Securities sold under agreement to repurchase		33,619		—		33,619		—		33,619
	Federal funds purchased		43,080		—		43,080		—		43,080
	Corporate debentures		23,829		—		—		19,888		19,888
	Interest rate swap derivatives		3,796		—		3,796		—		3,796
	Accrued interest payable		411		—		411		—		411
				Fair value measurements
	at December 31, 2013	Carrying amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	174,889	$	174,889	$	—	$	—	$	174,889
	Trading securities		—		—		—		—		—
	Investment securities available for sale		457,086		—		457,086		—		457,086
	FHLB and FRB stock		8,189		—		—		—		n/a
	Loans held for sale		1,010		—		1,010		—		1,010
	Loans, less allowance for loan losses of $20,454		1,453,725		—		—		1,456,295		1,456,295
	FDIC indemnification asset		73,433		—		—		—		n/a
	Interest rate swap derivatives		2,603		—		2,603		—		2,603
	Accrued interest receivable		6,337		—		—		6,337		6,337
	Financial liabilities:
	Deposits- without stated maturities	$	1,671,356	$	1,671,356	$	—	$	—	$	1,671,356
	Deposits- with stated maturities		384,875		—		389,115		—		389,115
	Securities sold under agreement to repurchase		20,457		—		20,457		—		20,457
	Federal funds purchased		29,909		—		29,909		—		29,909
	Corporate debentures		16,996		—		—		11,091		11,091
	Interest rate swap derivatives		2,496		—		2,496		—		2,496
	Accrued interest payable		333		—		333		—		333

Reportable_Segments_Tables

Reportable Segments (Tables)	6 Months Ended
	Jun. 30, 2014
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 six month periods ending June 30, 2014 and 2013.
	Three month period ending June 30, 2014
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	32,333		$	746		$	—					$	33,079
	Interest expense		(1,578	)		(6	)		(238	)					(1,822	)
	Net interest income (expense)		30,755			740			(238	)					31,257
	Recovery of prior loan loss provision		106			—			—						106
	Non interest income		1,087			5,285			—						6,372
	Non interest expense		(30,215	)		(5,063	)		(875	)					(36,153	)
	Net income (loss) before taxes		1,733			962			(1,113	)					1,582
	Income tax (provision) benefit		(589	)		(371	)		415						(545	)
	Net income (loss)	$	1,144		$	591		$	(698	)				$	1,037
	Total assets	$	3,716,281		$	173,516		$	495,677		$	(483,892	)	$	3,901,582
	Six month period ending June 30, 2014
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	61,403		$	1,458		$	—					$	62,861
	Interest expense		(2,939	)		(11	)		(461	)					(3,411	)
	Net interest income (expense)		58,464			1,447			(461	)					59,450
	Recovery of prior loan loss provision		147			—			—						147
	Non interest income		2,916			9,216			—						12,132
	Non interest expense		(57,382	)		(9,441	)		(1,733	)					(68,556	)
	Net income (loss) before taxes		4,145			1,222			(2,194	)					3,173
	Income tax (provision) benefit		(1,438	)		(471	)		826						(1,083	)
	Net income (loss)	$	2,707		$	751		$	(1,368	)				$	2,090
	Total assets	$	3,716,281		$	173,516		$	495,677		$	(483,892	)	$	3,901,582
	Three month period ending June 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	23,875		$	612		$	—			—		$	24,487
	Interest expense		(1,352	)		(5	)		(150	)		—			(1,507	)
	Net interest income (expense)		22,523			607			(150	)		—			22,980
	Provision for loan losses		(1,374	)		—			—			—			(1,374	)
	Non interest income		4,254			5,609			—			—			9,863
	Non interest expense		(21,212	)		(5,363	)		(798	)		—			(27,373	)
	Net income before taxes		4,191			853			(948	)		—			4,096
	Income tax (provision) benefit		(1,368	)		(329	)		359			—			(1,338	)
	Net income (loss)	$	2,823		$	524		$	(589	)		—		$	2,758
	Total assets	$	2,201,379		$	150,679		$	293,127		$	(289,832	)	$	2,355,353
	Six month period ending June 30, 2013
		Commercial			Correspondent			Corporate			Elimination			Total
		and retail			banking and			overhead and			entries
		banking			capital markets			administration
					division
	Interest income	$	47,473		$	1,392		$	—			—		$	48,865
	Interest expense		(2,752	)		(11	)		(300	)		—			(3,063	)
	Net interest income		44,721			1,381			(300	)		—			45,802
	Provision for loan losses		(1,014	)		—			—			—			(1,014	)
	Non interest income		7,528			12,614			—			—			20,142
	Non interest expense		(41,297	)		(11,438	)		(1,728	)		—			(54,463	)
	Net income before taxes		9,938			2,557			(2,028	)		—			10,467
	Income tax (provision) benefit		(3,066	)		(986	)		919			—			(3,133	)
	Net income (loss)	$	6,872		$	1,571		$	(1,109	)		—		$	7,334
	Total assets	$	2,201,379		$	150,679		$	293,127		$	(289,832	)	$	2,355,353

Investment_Securities_Availabl1

Investment Securities Available for Sale (Tables)	6 Months Ended
	Jun. 30, 2014
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:
		June 30, 2014
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	4	$	—	$	—	$	4
	Mortgage backed securities		501,286		6,494		5,190		502,590
	Municipal securities		38,267		1,428		140		39,555
	Total	$	539,557	$	7,922	$	5,330	$	542,149
		December 31, 2013
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Obligations of U.S. government sponsored entities and agencies	$	4	$	—	$	—	$	4
	Mortgage backed securities		424,654		4,623		12,396		416,881
	Municipal securities		39,728		921		448		40,201
	Total	$	464,386	$	5,544	$	12,844	$	457,086
Schedule of Sales of Available for Sale Securities	'
	Sales of available for sale securities for the six months ended June 30, 2014 and 2013 were as follows:
	For the six months ended:	June 30, 2014		June 30, 2013
	Proceeds	$	323,542	$	68,892
	Gross gains		1,175		1,038
	Gross losses		1,129		—
Fair Value and Amortized Cost of Available for Sale Securities by Contractual Maturity	'
	The fair value of available for sale securities at June 30, 2014 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately.
	Investment securities available for sale:	Fair Value		Amortized
				Cost
	Due in one year or less	$	584	$	579
	Due after one year through five years		2,129		2,017
	Due after five years through ten years		14,358		13,878
	Due after ten years through thirty years		22,488		21,797
	Mortgage backed securities		502,590		501,286
	Total	$	542,149	$	539,557
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 June 30, 2014 and December 31, 2013.
		June 30, 2014
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Mortgage backed securities	$	16,877	$	115	$	144,279	$	5,075	$	161,156	$	5,190
	Municipal securities		—		—		3,845		140		3,845		140
	Total temporarily impaired securities	$	16,877	$	115	$	148,124	$	5,215	$	165,001	$	5,330
		December 31, 2013
		Less than 12 months				12 months or more				Total
		Fair Value		Unrealized		Fair Value		Unrealized		Fair Value		Unrealized
				Losses				Losses				Losses
	Mortgage backed securities	$	239,641	$	10,221	$	18,793	$	2,175	$	258,434	$	12,396
	Municipal securities		7,603		333		1,010		115		8,613		448
	Total temporarily impaired securities	$	247,244	$	10,554	$	19,803	$	2,290	$	267,047	$	12,844

Loans_Tables

Loans (Tables)	6 Months Ended
	Jun. 30, 2014
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.
		June 30, 2014			31-Dec-13
	Total loans that are not PCI loans
	Real estate loans
	Residential	$	563,293		$	458,331
	Commercial		1,091,660			528,710
	Land, development and construction		78,444			62,503
	Total real estate		1,733,397			1,049,544
	Commercial		251,741			143,263
	Consumer and other loans		56,191			49,547
	Loans before unearned fees and deferred cost		2,041,329			1,242,354
	Net unearned fees and costs		820			404
	Total loans that are not PCI loans		2,042,149			1,242,758
	Total PCI loans (note 1)
	Real estate loans
	Residential		119,005			120,030
	Commercial		195,157			100,012
	Land, development and construction		27,885			6,381
	Total real estate		342,047			226,423
	Commercial		10,759			3,850
	Consumer and other loans		1,064			1,148
	Total PCI loans		353,870			231,421
	Allowance for loan losses for loans that are not PCI loans		(18,240	)		(19,694	)
	Allowance for loan losses for PCI loans		(960	)		(760	)
	Total loans, net of allowance for loan losses	$	2,376,819		$	1,453,725
	note 1: Purchased credit impaired (“PCI”) loans are being accounted for pursuant to ASC Topic 310-30.
	The following sets forth the covered FDIC loans included in the table above.
		June 30, 2014			Dec 31, 2013
	FDIC covered loans that are not PCI loans
	Real estate loans
	Residential	$	6,457		$	—
	Commercial		35,668			—
	Land, development and construction		857			—
	Total real estate		42,982			—
	Commercial		459			—
	Consumer and other loans		—			—
	FDIC covered loans, excluding PCI loans		43,441			—
	FDIC covered PCI loans (note 1)
	Real estate loans
	Residential		115,306			120,030
	Commercial		166,932			100,012
	Land, development and construction		20,509			6,381
	Total real estate		302,747			226,423
	Commercial		5,184			3,850
	Consumer and other loans		—			—
	Total FDIC covered PCI loans		307,931			230,273
	Allowance for loan losses for FDIC covered loans that are not PCI loans		—			—
	Allowance for loans losses for FDIC covered PCI loans		(960	)		(760	)
	Total covered loans, net of allowance for loan losses	$	350,412		$	229,513
Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio	'
	The table below set forth the activity in the allowance for loan losses for the periods presented.
		Allowance for			Allowance for			Total
		loan losses for			loan losses on
		loans that are			PCI loans
		not PCI loans
	Three months ended June 30, 2014
	Balance at beginning of period	$	18,913		$	1,183		$	20,096
	Loans charged-off		(902	)		—			(902	)
	Recoveries of loans previously charged-off		112			—			112
	Net charge-offs		(790	)		—			(790	)
	Provision for loan losses		117			(223	)		(106	)
	Balance at end of period	$	18,240		$	960		$	19,200
	Three months ended June 30, 2013
	Balance at beginning of period	$	22,631		$	2,623		$	25,254
	Loans charged-off		(2,603	)		(515	)		(3,118	)
	Recoveries of loans previously charged-off		310			—			310
	Net charge-offs		(2,293	)		(515	)		(2,808	)
	Provision for loan losses		1,462			(88	)		1,374
	Balance at end of period	$	21,800		$	2,020		$	23,820
		Allowance for			Allowance for			Total
		loan losses for			loan losses on
		loans that are			PCI loans
		not PCI loans
	Six months ended June 30, 2014
	Balance at beginning of period	$	19,694		$	760		$	20,454
	Loans charged-off		(2,062	)		—			(2,062	)
	Recoveries of loans previously charged-off		955			—			955
	Net charge-offs		(1,107	)		—			(1,107	)
	Provision for loan losses		(347	)		200			(147	)
	Balance at end of period	$	18,240		$	960		$	19,200
	Six months ended June 30, 2013
	Balance at beginning of period	$	24,033		$	2,649		$	26,682
	Loans charged-off		(3,834	)		(515	)		(4,349	)
	Recoveries of loans previously charged-off		473			—			473
	Net charge-offs		(3,361	)		(515	)		(3,876	)
	Provision for loan losses		1,128			(114	)		1,014
	Balance at end of period	$	21,800		$	2,020		$	23,820
	The following tables present the activity in the allowance for loan losses by portfolio segment for the periods presented.
		Real Estate Loans
		Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
	Allowance for loan losses for loan that are not PCI loans:
	Three months ended June 30, 2014
	Beginning of the period	$	7,812		$	7,338		$	1,788		$	956		$	1,019		$	18,913
	Charge-offs		(228	)		(299	)		(23	)		(67	)		(285	)		(902	)
	Recoveries		(20	)		61			25			3			43			112
	Provision for loan losses		255			444			(1,156	)		208			366			117
	Balance at end of period	$	7,819		$	7,544		$	634		$	1,100		$	1,143		$	18,240
	Three months ended June 30, 2013
	Beginning of the period	$	8,100		$	7,093		$	5,326		$	1,224		$	888		$	22,631
	Charge-offs		(1,569	)		(650	)		(144	)		(7	)		(233	)		(2,603	)
	Recoveries		153			13			106			11			27			310
	Provision for loan losses		3,107			(430	)		(1,217	)		(164	)		166			1,462
	Balance at end of period	$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
		Real Estate Loans
		Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
	Allowance for loan losses on PCI loans:
	Three months ended June 30, 2014
	Beginning of the period	$	—		$	623		$	89		$	471		$	—		$	1,183
	Charge-offs		—			—			—			—			—			—
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(101	)		(12	)		(110	)		—			(223	)
Balance at end of period	$	—		$	522		$	77		$	361		$	—		$	960
Three months ended June 30, 2013
Beginning of the period	$	—		$	2,310		$	—		$	313		$	—		$	2,623
Charge-offs		—			(515	)		—			—			—			(515	)
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(218	)		130			—			—			(88	)
Balance at end of period	$	—		$	1,577		$	130		$	313		$	—		$	2,020
Allowance for loan losses for loan that are not PCI loans:
Six months ended June 30, 2014
Beginning of the period	$	8,785		$	6,441		$	3,069		$	510		$	889		$	19,694
Charge-offs		(915	)		(315	)		(100	)		(267	)		(465	)		(2,062	)
Recoveries		435			375			48			4			93			955
Provision for loan losses		(486	)		1,043			(2,383	)		853			626			(347	)
Balance at end of period	$	7,819		$	7,544		$	634		$	1,100		$	1,143		$	18,240
Six months ended June 30, 2013
Beginning of the period	$	6,831		$	8,272		$	6,211		$	1,745		$	974		$	24,033
Charge-offs		(2,181	)		(1,074	)		(183	)		(59	)		(337	)		(3,834	)
Recoveries		233			40			120			21			59			473
Provision for loan losses		4,908			(1,212	)		(2,077	)		(643	)		152			1,128
Balance at end of period	$	9,791		$	6,026		$	4,071		$	1,064		$	848		$	21,800
Allowance for loan losses on PCI loans:
Six months ended June 30, 2014
Beginning of the period	$	—		$	138		$	89		$	533		$	—		$	760
Charge-offs		—			—			—			—			—			—
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			384			(12	)		(172	)		—			200
Balance at end of period	$	—		$	522		$	77		$	361		$	—		$	960
Six months ended June 30, 2013
Beginning of the period	$	—		$	2,335		$	—		$	314		$	—		$	2,649
Charge-offs		—			(515	)		—			—			—			(515	)
Recoveries		—			—			—			—			—			—
Provision for loan losses		—			(243	)		130			(1	)		—			(114	)
Balance at end of period	$	—		$	1,577		$	130		$	313		$	—		$	2,020
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 June 30, 2014 and December 31, 2013. 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 June 30, 2014	Residential			Commercial			Land,			Comm. &			Consumer			Total
								develop.,			industrial			& other
								constr.
	Allowance for loan losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	559		$	1,262		$	6		$	10		$	20		$	1,857
	Collectively evaluated for impairment		7,260			6,282			628			1,090			1,123			16,383
	Purchased credit impaired		0			522			77			361			0			960
	Total ending allowance balance	$	7,819		$	8,066		$	711		$	1,461		$	1,143		$	19,200
	Loans:
	Loans individually evaluated for impairment	$	9,725		$	13,028		$	2,068		$	2,127		$	315		$	27,263
	Loans collectively evaluated for impairment		553,568			1,078,632			76,376			249,614			55,876			2,014,066
	Purchased credit impaired loans		119,005			195,157			27,885			10,759			1,064			353,870
	Total ending loan balances	$	682,298		$	1,286,817		$	106,329		$	262,500		$	57,255		$	2,395,199
		Real Estate Loans
	As of December 31, 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	$	395		$	1,377		$	16		$	2		$	21		$	1,811
	Collectively evaluated for impairment		8,390			5,064			3,053			508			868			17,883
	Purchased credit impaired		—			138			89			533			—			760
	Total ending allowance balance	$	8,785		$	6,579		$	3,158		$	1,043		$	889		$	20,454
	Loans:
	Loans individually evaluated for impairment	$	8,610		$	12,564		$	1,307		$	1,297		$	332		$	24,110
	Loans collectively evaluated for impairment		449,721			516,146			61,196			141,966			49,215			1,218,244
	Purchased credit impaired loans		120,030			100,012			6,381			3,850			1,148			231,421
	Total ending loan balance	$	578,361		$	628,722		$	68,884		$	147,113		$	50,695		$	1,473,775
Summary of Impaired Loans	'
	The table below summarizes impaired loan data for the periods presented.
		June 30, 2014			Dec 31, 2014
	Performing TDRs (these are not included in NPLs)	$	12,659		$	10,763
	Non performing TDRs (these are included in NPLs)		2,281			4,684
	Total TDRs (these are included in impaired loans)	$	14,940		$	15,447
	Impaired loans that are not TDRs		12,323			8,663
	Total impaired loans	$	27,263		$	24,110
Troubled Debt Restructured Loans by Loans Type	'
	TDRs as of June 30, 2014 and December 31, 2013 quantified by loan type classified separately as accrual (performing loans) and non-accrual (non performing loans) are presented in the tables below.
	As of June 30, 2014	Accruing			Non Accrual			Total
	Real estate loans:
	Residential	$	7,932		$	806		$	8,738
	Commercial		3,247			1,292			4,539
	Land, development, construction		569			43			612
	Total real estate loans		11,748			2,141			13,889
	Commercial		699			37			736
	Consumer and other		212			103			315
	Total TDRs	$	12,659		$	2,281		$	14,940
	As of December 31, 2013	Accruing			Non-Accrual			Total
	Real estate loans:
	Residential	$	7,221		$	1,389		$	8,610
	Commercial		2,169			3,077			5,246
	Land, development, construction		608			47			655
	Total real estate loans		9,998			4,513			14,511
	Commercial		555			49			604
	Consumer and other		210			122			332
	Total TDRs	$	10,763		$	4,684		$	15,447
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 June 30, 2014 and December 31, 2013.
		Period ending						Year ending
		June 30, 2014						December 31, 2013
		Number			Recorded			Number			Recorded
		of loans			investment			of loans			investment
	Residential		—		$	—			3		$	553
	Commercial real estate		1			196			6			2,244
	Land, development, construction		—			—			—			—
	Commercial and Industrial		—			—			2			34
	Consumer and other		—			—			1			17
	Total		1		$	196			12		$	2,848
Summary of Loans Individually Evaluated for Impairment by Class of Loans	'
	The Company recorded a provision for loan loss expense of $18 and $30 and partial charge offs of $-0- and $4 on TDR loans that subsequently defaulted as described above during the three and six month periods ending June 30, 2014.
	The following tables present loans individually evaluated for impairment by class of loans as of June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans accounted for pursuant to ASC Topic 310-30. The recorded investment is less than the unpaid principal balance due to partial charge-offs.
	As of June 30, 2014	Unpaid			Recorded			Allowance
		principal			investment			for loan
		balance						losses
								allocated
	With no related allowance recorded:
	Residential real estate	$	7,253		$	6,992		$	—
	Commercial real estate		6,920			6,812			—
	Land, development, construction		2,550			1,938			—
	Commercial and industrial		2,055			1,922			—
	Consumer, other		—			—			—
	With an allowance recorded:
	Residential real estate		2,885			2,733			559
	Commercial real estate		6,459			6,216			1,262
	Land, development, construction		138			130			6
	Commercial and industrial		251			205			10
	Consumer, other		330			315			20
	Total	$	28,841		$	27,263		$	1,857
	As of December 31, 2013	Unpaid			Recorded			Allowance for
		principal			investment			loan losses
		balance						allocated
	With no related allowance recorded:
	Residential real estate	$	5,052		$	4,803		$	—
	Commercial real estate		9,330			7,439			—
	Land, development, construction		1,377			1,168			—
	Commercial and industrial		1,330			1,241			—
	Consumer, other		5			5			—
	With an allowance recorded:
	Residential real estate		3,942			3,807			395
	Commercial real estate		5,257			5,125			1,377
	Land, development, construction		147			139			16
	Commercial and industrial		102			56			2
	Consumer, other		340			327			21
	Total	$	26,882		$	24,110		$	1,811
Summary of Impairment by Class of Loans	'
	As of December 31, 2013	Unpaid			Recorded			Allowance for
		principal			investment			loan losses
		balance						allocated
	With no related allowance recorded:
	Residential real estate	$	5,052		$	4,803		$	—
	Commercial real estate		9,330			7,439			—
	Land, development, construction		1,377			1,168			—
	Commercial and industrial		1,330			1,241			—
	Consumer, other		5			5			—
	With an allowance recorded:
	Residential real estate		3,942			3,807			395
	Commercial real estate		5,257			5,125			1,377
	Land, development, construction		147			139			16
	Commercial and industrial		102			56			2
	Consumer, other		340			327			21
	Total	$	26,882		$	24,110		$	1,811
	Three month period ending June, 30, 2014	Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
	Real estate loans:
	Residential	$	9,635		$	87		$	—
	Commercial		12,858			43			—
	Land, development, construction		1,764			10			—
	Total real estate loans		24,257			140			—
	Commercial and industrial		2,332			18			—
	Consumer and other loans		320			3			—
	Total	$	26,909		$	161		$	—
	Six month period ending June, 30, 2014	Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
	Real estate loans:
	Residential	$	9,358		$	164		$	—
	Commercial		12,742			71			—
	Land, development, construction		1,575			19			—
	Total real estate loans		23,675			254			—
	Commercial and industrial		2,126			39			—
	Consumer and other loans		324			6			—
	Total	$	26,125		$	299		$	—
	Three month period ending June, 30, 2013	Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
	Real estate loans:
	Residential	$	8,777		$	70		$	—
	Commercial		27,192			288			—
	Land, development, construction		1,407			6			—
	Total real estate loans		37,376			364			—
	Commercial and industrial		1,656			8			—
	Consumer and other loans		366			3			—
	Total	$	39,398		$	375		$	—
	Six month period ending June, 30, 2013	Average of			Interest			Cash basis
		impaired			income			interest
		loans			recognized			income
					during			recognized
					impairment
	Real estate loans:
	Residential	$	9,108		$	143		$	—
	Commercial		28,730			545			—
Land, development, construction		1,417			8			—
Total real estate loans		39,255			696			—
Commercial and industrial		2,124			16			—
Consumer and other loans		378			6			—
Total	$	41,757		$	718		$	—
Summary of Nonperforming Loans	'
	Nonperforming loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans, excluding purchased credit impaired loans accounted for pursuant to ASC Topic 310-30.
	Nonperforming loans were as follows:	June 30,			Dec 31,
		2014			2013
	Non accrual loans	$	29,667		$	27,077
	Loans past due over 90 days and still accruing interest		—			—
	Total non performing loans	$	29,667		$	27,077
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 June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans:
	As of June 30, 2014	Nonaccrual			Loans past due
					over 90 days
					still accruing
	Residential real estate	$	11,292		$	—
	Commercial real estate		13,991			—
	Land, development, construction		1,900			—
	Commercial		2,216			—
	Consumer, other		268			—
	Total	$	29,667		$	—
	As of December 31, 2013	Nonaccrual			Loans past due
					over 90 days
					still accruing
	Residential real estate	$	10,162		$	—
	Commercial real estate		13,925			—
	Land, development, construction		1,099			—
	Commercial		1,582			—
	Consumer, other		309			—
	Total	$	27,077		$	—
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 June 30, 2014 and December 31, 2013, excluding purchased credit impaired loans:
		Accruing Loans
	As of June 30, 2014	Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
					days			days			than 90			Due			Past Due			Loans
					past due			past due			days past
											due
	Residential real estate	$	563,293		$	2,402		$	1,892		$	—		$	4,294		$	547,707		$	11,292
	Commercial real estate		1,091,660			3,001			473			—			3,474			1,074,195			13,991
	Land/dev/construction		78,444			1,866			254			—			2,120			74,424			1,900
	Commercial		251,741			1,909			1,048			—			2,957			246,568			2,216
	Consumer		56,191			225			80			—			305			55,618			268
			$2,041,329		$	9,403		$	3,747		$	—		$	13,150		$	1,998,512		$	29,667
		Accruing Loans
	As of December 31, 2013	Total			30 - 59			60 - 89			Greater			Total Past			Loans Not			Nonaccrual
					days			days			than 90			Due			Past Due			Loans
					past due			past due			days past
											due
	Residential real estate	$	458,331		$	2,801		$	1,942		$	—		$	4,743		$	443,426		$	10,162
	Commercial real estate		528,710			2,420			1,941			—			4,361			510,424			13,925
	Land/dev/construction		62,503			136			241			—			377			61,027			1,099
	Commercial		143,263			491			1			—			492			141,189			1,582
	Consumer		49,547			295			240			—			535			48,703			309
			$1,242,354		$	6,143		$	4,365		$	—		$	10,508		$	1,204,769		$	27,077
Risk Category of Loans by Class of Loans, Excluding Purchased Credit Impaired Loans	'
		As of June 30, 2014
	Loan Category	Pass			Special			Substandard			Doubtful
					Mention
	Residential real estate	$	534,622		$	5,313		$	23,358		$	—
	Commercial real estate		1,012,363			39,951			39,346			—
	Land/dev/construction		66,080			8,637			3,727			—
	Commercial		243,632			2,586			5,523			—
	Consumer		55,491			274			426			—
	Total	$	1,912,188		$	56,761		$	72,380		$	—
		As of December 31, 2013
	Loan Category	Pass			Special			Substandard			Doubtful
					Mention
	Residential real estate	$	428,671		$	6,438		$	23,222		$	—
	Commercial real estate		448,762			46,427			33,521			—
	Land/dev/construction		50,164			9,566			2,773			—
	Commercial		134,901			4,490			3,872			—
	Consumer		49,448			526			573			—
	Total	$	1,110,946		$	67,447		$	63,961		$	—
Investment in Residential and Consumer Loans, Excluding Loans from Purchased Credit Impaired Loans	'
	The following table presents the recorded investment in residential and consumer loans, excluding purchased credit impaired loans, based on payment activity as of June 30, 2014 and December 31, 2013:
	As of June 30, 2014	Residential			Consumer
	Performing	$	552,001		$	55,923
	Nonperforming		11,292			268
	Total	$	563,293		$	56,191
	As of December 31, 2013	Residential			Consumer
	Performing	$	448,169		$	49,238
	Nonperforming		10,162			309
	Total	$	458,331		$	49,547
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 June 30, 2014 and December 31, 2013. Contractually required principal and interest payments have been adjusted for estimated prepayments.
		Jun 30, 2014			Dec 31, 2013
	Contractually required principal and interest	$	566,948		$	389,537
	Non-accretable difference		(79,985	)		(55,304	)
	Cash flows expected to be collected		486,963			334,233
	Accretable yield		(133,093	)		(102,812	)
	Carrying value of acquired loans	$	353,870		$	231,421
	Allowance for loan losses		(960	)		(760	)
	Carrying value less allowance for loan losses	$	352,910		$	230,661
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 six month periods ending June 30, 2014 and 2013.
	Activity during the three month period ending June 30, 2014	Mar 31, 2014			Effect of			income			all other			June 30, 2014
					acquisitions			accretion			adjustments
	Contractually required principal and interest	$	414,385		$	180,960		$	—		$	(28,397	)	$	566,948
	Non-accretable difference		(56,062	)		(33,527	)		—			9,604			(79,985	)
	Cash flows expected to be collected		358,323			147,433			—			(18,793	)		486,963
	Accretable yield		(107,523	)		(25,749	)		8,231			(8,052	)		(133,093	)
	Carry value of acquired loans	$	250,800			121,684			8,231		$	(26,845	)	$	353,870
	Activity during the six month period ending June 30, 2014	31-Dec-13			Effect of			income			all other			June 30, 2014
					acquisitions			accretion			adjustments
	Contractually required principal and interest	$	389,537		$	229,249		$	—		$	(51,838	)	$	566,948
	Non-accretable difference		(55,304	)		(45,293	)		—			20,612			(79,985	)
	Cash flows expected to be collected		334,233			183,956			—			(31,226	)		486,963
	Accretable yield		(102,812	)		(32,204	)		16,462			(14,539	)		(133,093	)
	Carry value of acquired loans	$	231,421			151,752			16,462			(45,765	)	$	353,870
	Activity during the three month period ending June 30, 2013	Mar 31, 2013			income			all other			June 30, 2013
					accretion			adjustments
	Contractually required principal and interest	$	486,531			—		$	(37,385	)	$	449,146
	Non-accretable difference		(110,243	)		—			20,183			(90,060	)
	Cash flows expected to be collected		376,288			—			(17,202	)		359,086
	Accretable yield		(95,499	)		8,020			(11,928	)		(99,407	)
	Carry value of acquired loans	$	280,789		$	8,020		$	(29,130	)	$	259,679
	Activity during the six month period ending June 30, 2013	31-Dec-12			income			all other			30-Jun-13
					accretion			adjustments
	Contractually required principal and interest	$	534,989			—		$	(85,843	)	$	449,146
	Non-accretable difference		(142,855	)		—			52,795			(90,060	)
	Cash flows expected to be collected		392,134			—			(33,048	)		359,086
	Accretable yield		(93,107	)		15,847			(22,147	)		(99,407	)
	Carry value of acquired loans	$	299,027		$	15,847		$	(55,195	)	$	259,679

FDIC_Indemnification_Asset_Tab

FDIC Indemnification Asset (Tables)	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
FDIC Loss Share Indemnification Asset	'
	The activity in the FDIC loss share indemnification asset is as follows (certain items related to true-up payment liabilities per the FDIC agreements, which had previously been netted with the FDIC indemnification asset, have been reclassified as a separate liability):
		Six month			Twelve month
		period ended			period ended
		June 30, 2014			31-Dec-13
	Beginning of the year	$	73,877		$	119,691
	Effect of acquisition		2,636			—
	Amortization, net		(10,161	)		(13,765	)
	Indemnification revenue		1,529			6,055
	Indemnification of foreclosure expense		780			4,413
	Proceeds from FDIC		(7,510	)		(42,004	)
	Impairment (recovery) of loan pool		160			(513	)
	Period end balance	$	61,311		$	73,877
FDIC Activity In True-up Payment Liability	'
	The activity in the true-up payment liability is as follows:
		Six month			Twelve month
		period ended			period ended
		June 30, 2014			31-Dec-13
	Beginning of the year	$	444		$	402
	Effect of acquisition		682			—
	True-up liability accrual		30			42
	Period end balance	$	1,156		$	444

Business_Combinations_Tables

Business Combinations (Tables)	6 Months Ended
	Jun. 30, 2014
Gulfstream Bancshares, Inc. [Member]	'
Summary of Purchase Price Calculation	'
	The table below summarizes the purchase price calculation.
	Number of shares of Gulfstream common stock outstanding at January 16, 2014		1,569,364
	Gulfstream preferred shares that convert to Gulfstream common shares upon a change in control		155,629
	Total Gulfstream common shares including conversion of preferred shares		1,724,993
	Per share exchange ratio		3.012
	Number of shares of CenterState common stock less 138 of fractional shares		5,195,541
	Multiplied by CenterState common stock price per share on January 16, 2014	$	10.23
	Fair value of CenterState common stock issued	$	53,150
	Total Gulfstream common shares including conversion of preferred shares		1,724,993
	Multiplied by the cash consideration each Gulfstream share is entitled to receive	$	14.65
	Total Cash Consideration, not including cash for fractional shares	$	25,271
	Total Stock Consideration	$	53,150
	Total Cash Consideration plus $2 for 138 of fractional shares		25,273
	Total consideration to be paid to Gulfstream common shareholders	$	78,423
	Fair value of current Gulfstream stock options to be converted to CenterState stock options		3,617
	Total purchase price	$	82,040
Summary of Preliminary Estimates of Fair Value of Assets Purchased, Including Goodwill and Liabilities Assumed	'
	The list below summarizes the preliminary estimates of the fair value of the assets purchased, including goodwill, and liabilities assumed as of the January 17, 2014 purchase date.
		Jan 17, 2014
	Assets:
	Cash and cash equivalents	$	102,278
	Loans, held for investment		329,515
	Purchased credit impaired loans		30,068
	Loans held for sale		247
	Investments		60,816
	Interest receivable		1,087
	Branch real estate		5,519
	Furniture and fixtures		262
	FHLB stock		885
	Bank owned life insurance		4,939
	Other real estate owned		2,694
	Core deposit intangible		4,173
	Goodwill		31,516
	Other assets		11,261
	Total assets acquired	$	585,260
	Liabilities:
	Deposits	$	478,999
	Federal Home loan advances		5,708
	Repurchase agreements		7,576
	Interest payable		125
	Official checks outstanding		826
	Corporate debentures		6,745
	Other liabilities		3,241
	Total liabilities assumed	$	503,220
Summary of Contractually Required Principal and Interest Cash Payments for Purchased Credit Impaired Loans	'
	The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of January 17, 2014 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.
	Contractually required principal and interest	$	48,289
	Non-accretable difference		(11,766	)
	Cash flows expected to be collected		36,523
	Accretable yield		(6,455	)
	Total purchased credit-impaired loans acquired	$	30,068
Summary of Fair Value of Acquired Loans and Unpaid Principal Balance	'
	The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.
		Book			Fair
		balance			value
	Loans:
	Single family residential real estate		33,506			32,319
	Commercial real estate		185,250			183,189
	Construction/development/land		30,387			27,704
	Commercial loans		85,940			84,203
	Consumer and other loans		2,112			2,100
	Purchased credit-impaired		40,655			30,068
	Total earning assets	$	377,850		$	359,583
Schedule of Measurement Period Adjustments	'
	Based on appraisals received subsequent to the acquisition date, the Company adjusted its initial fair value estimates of certain other real estate owned acquired.
					measurement
		Jan 17, 2014			period			Jan 17, 2014
		(as initially reported)			adjustments			(as adjusted)
	Assets:
	Cash and cash equivalents	$	102,278		$	—		$	102,278
	Loans, held for investment		329,515						329,515
	Purchased credit impaired loans		30,068						30,068
	Loans held for sale		247						247
	Investments		60,816						60,816
	Interest receivable		1,087						1,087
	Branch real estate		5,519						5,519
	Furniture and fixtures		262						262
	FHLB stock		885						885
	Bank owned life insurance		4,939						4,939
	Other real estate owned		3,365			(671	)		2,694
	Core deposit intangible		4,173						4,173
	Goodwill		31,104			412			31,516
	Other assets		11,002			259			11,261
	Total assets acquired	$	585,260		$	—		$	585,260
	Liabilities:
	Deposits	$	478,999		$	—		$	478,999
	Federal Home loan advances		5,708						5,708
	Repurchase agreements		7,576						7,576
	Interest payable		125						125
	Official checks outstanding		826						826
	Trust Preferred Security		6,745						6,745
	Other liabilities		3,241						3,241
	Total liabilities assumed	$	503,220		$	—		$	503,220
First Southern Bank Inc And Gulfstream Bancshares Inc [Member]	'
Pro-Forma Financial Information of Acquisition	'
	Pro-forma data for the three and six month periods ending June 30, 2013 listed in the table below presents pro-forma information as if the Gulfstream and FSB acquisitions occurred at the beginning of 2013. The pro-forma information for the three and six month periods ending June 30, 2014 assumes the FSB acquisition occurred at the beginning of 2013. Because the Gulfstream transaction closed on January 17, 2014 and their actual results are included in the Company’s actual operating results for 2014, their actual results were used in the table below for the three and six month periods ending June 30, 2014 instead of a pro-forma amount.
		Three months ended June 30,						Six months ended June 30,
		2013			2014			2013		2014
	Net interest income	$	37,252		$	37,617		$	74,835	$	75,434
	Net income available to common shareholders		5,129			5,277			11,525		8,524
	EPS - basic	$	0.11		$	0.12		$	0.26	$	0.19
	EPS - diluted	$	0.11		$	0.12		$	0.26	$	0.19
First Southern Bancorp, Inc. [Member]	'
Summary of Purchase Price Calculation	'
	The table below summarizes the purchase price calculation.
	Number of shares of FSB common stock outstanding at May 30, 2014		31,539,698
	FSB preferred shares that convert to FSB common shares upon a change in control		48,375
	Total FSB common shares including conversion of preferred shares		31,588,073
	Per share exchange ratio		0.3
	Number of shares of CenterState common stock		9,476,424
	Multiplied by CenterState common stock price per share on May 30, 2014	$	10.62
	Fair value of CenterState common stock issued	$	100,639
	Total FSB common shares including conversion of preferred shares		31,588,073
	Multiplied by the cash consideration each FSB share is entitled to receive	$	3
	Total Cash Consideration	$	94,765
	Total Stock Consideration	$	100,639
	Total Cash Consideration		94,765
	Total purchase price	$	195,404
Summary of Preliminary Estimates of Fair Value of Assets Purchased, Including Goodwill and Liabilities Assumed	'
	The list below summarizes the preliminary estimates of the fair value of the assets purchased, including goodwill, and liabilities assumed as of the June 1, 2014 purchase date.
		June 1, 2014
	Assets:
	Cash and cash equivalents	$	148,257
	Loans, excluding purchased credit impaired loans		477,841
	Purchased credit impaired loans		121,684
	Investments		204,723
	Interest receivable		2,007
	Branch real estate		1,594
	Furniture and fixtures		1,282
	Bank property held for sale		7,119
	Federal Reserve Bank and Federal Home Loan Bank stock		5,576
	Bank owned life insurance		2,555
	Other repossessed real estate owned covered by FDIC loss share agreements		22,731
	Other repossessed real estate owned		454
	Core deposit intangible		7,396
	Goodwill		541
	Deferred tax asset		43,889
	Other assets		4,581
	Total assets acquired		1,052,230
	Liabilities:
	Deposits		662,959
	Deposits held for sale		189,674
	Interest payable		58
	Other liabilities		4,135
	Total liabilities assumed		856,826
Summary of Contractually Required Principal and Interest Cash Payments for Purchased Credit Impaired Loans	'
	The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of June 1, 2014 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.
	Contractually required principal and interest	$	180,960
	Non-accretable difference		(33,527	)
	Cash flows expected to be collected		147,433
	Accretable yield		(25,749	)
	Total purchased credit-impaired loans acquired	$	121,684
Summary of Fair Value of Acquired Loans and Unpaid Principal Balance	'
	The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.
		Book			Fair
		balance			value
	Loans:
	Single family residential real estate	$	60,332		$	57,693
	Commercial real estate		387,589			382,162
	Construction/development/land		17,238			15,942
	Commercial loans		20,267			19,906
	Consumer and other loans		2,496			2,138
	Purchased credit-impaired		142,414			121,684
	Total earning assets	$	630,336		$	599,525

Nature_of_Operations_and_Basis1

Nature of Operations and Basis of Presentation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
	Revenue_Generating_Activities
	Branch
	Location
	County
Nature Of Operations And Basis Of Presentation [Abstract]	'
Number of service banking locations	68
Number of counties	21
Number of branches closed	10
Number of deposits sold to unrelated commercial bank	6
Number of real estate sold to unrelated commercial bank	5
Number of branches consolidated into existing CenterState branches	4
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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Anti dilutive stock options	973,875	1,121,942	989,105	1,126,478

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		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Numerator for basic and diluted earnings per share:	'	'	'	'
Net income	$1,037	$2,758	$2,090	$7,334
Denominator:	'	'	'	'
Denominator for basic earnings per share - weighted-average shares	38,665,018	30,098,853	36,576,622	30,094,315
Effect of dilutive securities:	'	'	'	'
Stock options and stock grants	386,212	62,388	403,612	61,465
Denominator for diluted earnings per share - adjusted weighted-average shares	39,051,230	30,161,241	36,980,234	30,155,780
Basic earnings per share	$0.03	$0.09	$0.06	$0.24
Diluted earnings per share	$0.03	$0.09	$0.06	$0.24

Fair_Value_Assets_and_Liabilit

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets:	'	'
Trading securities, at fair value	$89	'
Available for sale securities	542,149	457,086
Interest rate swap derivatives, carrying amount assets	3,467	2,603
Liabilities:	'	'
Interest rate swap derivatives, carrying amount liability	3,796	2,496
Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	502,590	416,881
Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	39,555	40,201
Fair Value Measurements on Recurring [Member]	'	'
Assets:	'	'
Trading securities, at fair value	89	'
Interest rate swap derivatives, carrying amount assets	3,467	2,603
Liabilities:	'	'
Interest rate swap derivatives, carrying amount liability	3,796	2,496
Fair Value Measurements on Recurring [Member] | Obligations of U.S. government sponsored entities and agencies [Member]	'	'
Assets:	'	'
Available for sale securities	4	4
Fair Value Measurements on Recurring [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	502,590	416,881
Fair Value Measurements on Recurring [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	39,555	40,201
Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets:	'	'
Trading securities, at fair value	89	'
Available for sale securities	542,149	457,086
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements on Recurring [Member]	'	'
Assets:	'	'
Trading securities, at fair value	89	'
Interest rate swap derivatives, carrying amount assets	3,467	2,603
Liabilities:	'	'
Interest rate swap derivatives, carrying amount liability	3,796	2,496
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements on Recurring [Member] | Obligations of U.S. government sponsored entities and agencies [Member]	'	'
Assets:	'	'
Available for sale securities	4	4
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements on Recurring [Member] | Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Available for sale securities	502,590	416,881
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements on Recurring [Member] | Municipal Securities [Member]	'	'
Assets:	'	'
Available for sale securities	$39,555	$40,201

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
	Branches		Branches
	Property
	Office
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'	'	'	'
Impaired loans with allocated allowance for loan losses	$12,796	'	$12,796	'	$13,528
Impaired valuation allowance	1,473	'	1,473	'	1,644
Provision for loan loss expense	181	'	359	'	'
Additions charged to expenses	885	1,680	1,905	2,667	'
Number of branches closed	8	'	'	'	'
Company owned branches	7	'	7	'	'
Company leased branches	1	'	1	'	'
Number properties owned by the Company were transferred to held for sale	5	'	'	'	'
Number of loan production office	2	'	'	'	'
Impairment charges recognized	0	'	2,326	'	'
Additional impairment charges	$180	'	'	'	'
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 $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans on Residential real estate at Carrying value	$3,184	$3,191
Impaired loans on Commercial real estate at Carrying value	6,058	7,515
Impaired loans on Land, land development and construction at Carrying value	1,248	290
Impaired loans on Commercial at Carrying value	683	731
Impaired loans on Consumer at Carrying value	150	157
Other real estate owned on Residential real estate at Carrying value	1,599	27
Other real estate owned on Commercial real estate at Carrying value	3,741	3,837
Other real estate owned on Land, land development and construction at Carrying value	1,913	3,949
Bank owned real estate held for sale	6,049	1,582
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans on Residential real estate	3,184	3,191
Impaired loans on Commercial real estate	6,058	7,515
Impaired loans on Land, land development and construction	1,248	290
Impaired loans on Commercial	683	731
Impaired loans on Consumer	150	157
Other real estate owned on Residential real estate	1,599	27
Other real estate owned on Commercial real estate	3,741	3,837
Other real estate owned on Land, land development and construction	1,913	3,949
Bank owned real estate held for sale	$6,049	$1,582

Fair_Value_Carrying_Amounts_an

Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial assets:	'	'	'	'
Cash and cash equivalents	$516,009	$174,889	$103,555	$136,748
Cash and cash equivalents, fair value	'	174,889	'	'
Trading securities, at fair value	89	'	'	'
Investment securities available for sale, at fair value	542,149	457,086	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	17,176	8,189	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
Loans held for sale, carrying amount	1,596	1,010	'	'
Loans held for sale, fair value	1,596	1,010	'	'
Loans, less allowance for loan losses, carrying amount	2,376,819	1,453,725	'	'
Loans, less allowance for loan losses, fair value	2,383,572	1,456,295	'	'
FDIC indemnification asset, carrying amount	61,311	73,877	'	119,691
FDIC Indemnification asset, fair value	'	'	'	'
Interest rate swap derivatives, carrying amount assets	3,467	2,603	'	'
Interest rate swap derivatives, assets fair value	3,467	2,603	'	'
Accrued interest receivable, carrying amount	8,216	6,337	'	'
Accrued interest receivable, fair value	8,216	6,337	'	'
Financial liabilities:	'	'	'	'
Deposits- without stated maturities, carrying amount	2,595,030	1,671,356	'	'
Deposits- without stated maturities, fair value	2,595,030	1,671,356	'	'
Deposits- with stated maturities, carrying amount	526,313	384,875	'	'
Deposits- with stated maturities, fair value	529,428	389,115	'	'
Deposits held for sale, carrying amount	185,646	'	'	'
Securities sold under agreement to repurchase, fair value	33,619	'	'	'
Securities sold under agreement to repurchase	33,619	20,457	'	'
Federal funds purchased, carrying amount	43,080	29,909	'	'
Corporate debentures, carrying amount	23,829	16,996	'	'
Federal funds purchased, fair value	43,080	29,909	'	'
Interest rate swap derivatives, carrying amount	3,796	2,496	'	'
Corporate debentures, fair value	19,888	11,091	'	'
Accrued interest payable, carrying amount	411	333	'	'
Interest rate swap derivatives, fair value	3,796	2,496	'	'
Accrued interest payable, fair value	411	333	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and cash equivalents	516,009	'	'	'
Cash and cash equivalents, fair value	'	174,889	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Financial liabilities:	'	'	'	'
Deposits- without stated maturities, fair value	2,595,030	1,671,356	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Trading securities, at fair value	89	'	'	'
Investment securities available for sale, at fair value	542,149	457,086	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	'	'	'	'
Loans held for sale, fair value	1,596	1,010	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Interest rate swap derivatives, assets fair value	3,467	2,603	'	'
Financial liabilities:	'	'	'	'
Deposits- with stated maturities, fair value	529,428	389,115	'	'
Deposits held for sale, carrying amount	185,646	'	'	'
Securities sold under agreement to repurchase, fair value	33,619	'	'	'
Securities sold under agreement to repurchase	'	20,457	'	'
Federal funds purchased, fair value	43,080	29,909	'	'
Interest rate swap derivatives, fair value	3,796	2,496	'	'
Accrued interest payable, fair value	411	333	'	'
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	2,383,572	1,456,295	'	'
FDIC Indemnification asset, fair value	'	'	'	'
Accrued interest receivable, fair value	8,216	6,337	'	'
Financial liabilities:	'	'	'	'
Corporate debentures, fair value	$19,888	$11,091	'	'

Fair_Value_Carrying_Amounts_an1

Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Parenthetical) (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'	'	'	'	'
Deduction of Allowance for loan losses from loans	$19,200	$20,096	$20,454	$23,820	$25,254	$26,682

Reportable_Segments_Reconcilia

Reportable Segments - Reconciliation of Reportable Segment Revenues, Expenses and Profit (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	$33,079	$24,487	$62,861	$48,865	'
Interest expense	-1,822	-1,507	-3,411	-3,063	'
Net interest income (expense)	31,257	22,980	59,450	45,802	'
Recovery of prior loan loss provision	106	-1,374	147	-1,014	'
Non interest income	6,372	9,863	12,132	20,142	'
Non interest expense	-36,153	-27,373	-68,556	-54,463	'
Income before provision for income taxes	1,582	4,096	3,173	10,467	'
Income tax (provision) benefit	-545	-1,338	-1,083	-3,133	'
Net income (loss)	1,037	2,758	2,090	7,334	'
Total assets	3,901,582	2,355,353	3,901,582	2,355,353	2,416,011
Operating Segments [Member] | Commercial and Retail Banking [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	32,333	23,875	61,403	47,473	'
Interest expense	-1,578	-1,352	-2,939	-2,752	'
Net interest income (expense)	30,755	22,523	58,464	44,721	'
Recovery of prior loan loss provision	106	-1,374	147	-1,014	'
Non interest income	1,087	4,254	2,916	7,528	'
Non interest expense	-30,215	-21,212	-57,382	-41,297	'
Income before provision for income taxes	1,733	4,191	4,145	9,938	'
Income tax (provision) benefit	-589	-1,368	-1,438	-3,066	'
Net income (loss)	1,144	2,823	2,707	6,872	'
Total assets	3,716,281	2,201,379	3,716,281	2,201,379	'
Operating Segments [Member] | Correspondent Banking And Capital Markets Division [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest income	746	612	1,458	1,392	'
Interest expense	-6	-5	-11	-11	'
Net interest income (expense)	740	607	1,447	1,381	'
Non interest income	5,285	5,609	9,216	12,614	'
Non interest expense	-5,063	-5,363	-9,441	-11,438	'
Income before provision for income taxes	962	853	1,222	2,557	'
Income tax (provision) benefit	-371	-329	-471	-986	'
Net income (loss)	591	524	751	1,571	'
Total assets	173,516	150,679	173,516	150,679	'
Corporate Overhead and Administration [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Interest expense	-238	-150	-461	-300	'
Net interest income (expense)	-238	-150	-461	-300	'
Non interest expense	-875	-798	-1,733	-1,728	'
Income before provision for income taxes	-1,113	-948	-2,194	-2,028	'
Income tax (provision) benefit	415	359	826	919	'
Net income (loss)	-698	-589	-1,368	-1,109	'
Total assets	495,677	293,127	495,677	293,127	'
Elimination Entries [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total assets	($483,892)	($289,832)	($483,892)	($289,832)	'

Reportable_Segments_Additional

Reportable Segments - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
	Location
	County
	Subsidiary
Segment Reporting Measurement Disclosures [Abstract]	'
Number of non bank subsidiary	1
Number of counties in which company operates	21
Number of bank locations	68

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 $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$539,557	$464,386
Gross Unrealized Gains	7,922	5,544
Gross Unrealized Losses	5,330	12,844
Fair Value	542,149	457,086
Obligations of U.S. government sponsored entities and agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	4	4
Fair Value	4	4
Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	501,286	424,654
Gross Unrealized Gains	6,494	4,623
Gross Unrealized Losses	5,190	12,396
Fair Value	502,590	416,881
Municipal Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	38,267	39,728
Gross Unrealized Gains	1,428	921
Gross Unrealized Losses	140	448
Fair Value	$39,555	$40,201

Investment_Securities_Availabl3

Investment Securities Available for Sale - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
	Security		Security
Investments Debt And Equity Securities [Abstract]	'	'	'
Gain (loss) on sale of securities acquired through Gulfstream acquisition	$0	'	'
Tax provision related to net realized gains	18	400	'
Securities estimated fair value	$145,760	'	$108,528
Percentage of AFS securities held by any one issuer as a percentage of stockholders' equity	10.00%	'	10.00%
Number of securities representing specified criteria	0	'	0
Percentage of mortgage-backed securities held from U.S. government-sponsored entities and agencies	100.00%	'	'

Investment_Securities_Availabl4

Investment Securities Available for Sale - Schedule of Sales of Available for Sale Securities (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Investments Debt And Equity Securities [Abstract]	'	'
Proceeds	$323,542	$68,892
Gross gains	1,175	1,038
Gross losses	$1,129	'

Investment_Securities_Availabl5

Investment Securities Available for Sale - Fair Value and Amortized Cost of Available for Sale Securities by Contractual Maturity (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments Debt And Equity Securities [Abstract]	'	'
Investment securities available for sale, Due in one year or less, Fair Value	$584	'
Investment securities available for sale, Due after one year through five years, Fair Value	2,129	'
Investment securities available for sale, Due after five years through ten years, Fair Value	14,358	'
Investment securities available for sale, Due after ten years through thirty years, Fair Value	22,488	'
Investment securities available for sale, Mortgage backed securities, Fair Value	502,590	'
Fair Value	542,149	457,086
Investment securities available for sale, Due in one year or less, Amortized Cost	579	'
Investment securities available for sale, Due after one year through five years, Amortized Cost	2,017	'
Investment securities available for sale, Due after five years through ten years, Amortized Cost	13,878	'
Investment securities available for sale, Due after ten years through thirty years, Amortized Cost	21,797	'
Investment securities available for sale, Mortgage backed securities, Amortized Cost	501,286	'
Amortized Cost	$539,557	$464,386

Investment_Securities_Availabl6

Investment Securities Available for Sale - Investments Gross Unrealized Losses and Fair Value (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Total, Unrealized Losses	$5,330	$12,844
Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	16,877	239,641
Less than 12 months, Unrealized Losses	115	10,221
12 months or more, Fair Value	144,279	18,793
12 months or more, Unrealized Losses	5,075	2,175
Total, Fair Value	161,156	258,434
Total, Unrealized Losses	5,190	12,396
Municipal Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	'	7,603
Less than 12 months, Unrealized Losses	'	333
12 months or more, Fair Value	3,845	1,010
12 months or more, Unrealized Losses	140	115
Total, Fair Value	3,845	8,613
Total, Unrealized Losses	140	448
Total Temporarily Impaired Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	16,877	247,244
Less than 12 months, Unrealized Losses	115	10,554
12 months or more, Fair Value	148,124	19,803
12 months or more, Unrealized Losses	5,215	2,290
Total, Fair Value	165,001	267,047
Total, Unrealized Losses	$5,330	$12,844

Loans_Summary_of_Information_C

Loans - Summary of Information Concerning Loan Portfolio by Collateral Types (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Total FDIC covered loans, excluding PCI loans	$2,042,149	'	$1,242,758	'	'	'
Total loans, net of allowance for loan losses	2,376,819	'	1,453,725	'	'	'
Allowance for loan losses for loans that are not PCI loans [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	563,293	'	458,331	'	'	'
Real estate loans, Commercial	1,091,660	'	528,710	'	'	'
Land, development and construction	78,444	'	62,503	'	'	'
Total real estate	1,733,397	'	1,049,544	'	'	'
Commercial	251,741	'	143,263	'	'	'
Consumer and other loans	56,191	'	49,547	'	'	'
Loans before unearned fees and deferred cost	2,041,329	'	1,242,354	'	'	'
Net unearned fees and costs	820	'	404	'	'	'
Total FDIC covered loans, excluding PCI loans	2,042,149	'	1,242,758	'	'	'
Allowance for loan losses for PCI loans	'	'	'	'	'	-24,033
Allowance for loan losses on PCI loans [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	119,005	'	120,030	'	'	'
Real estate loans, Commercial	195,157	'	100,012	'	'	'
Land, development and construction	27,885	'	6,381	'	'	'
Total real estate	342,047	'	226,423	'	'	'
Commercial	10,759	'	3,850	'	'	'
Consumer and other loans	1,064	'	1,148	'	'	'
Total PCI loans	353,870	'	231,421	'	'	'
Allowance for loan losses for loans that are not PCI loans	-18,240	'	-19,694	'	'	'
Allowance for loan losses for PCI loans	-960	-1,183	-760	-2,020	-2,623	-2,649
Fdic Covered Loans Excluding Purchased Credit Impaired Loans [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	6,457	'	'	'	'	'
Real estate loans, Commercial	35,668	'	'	'	'	'
Land, development and construction	857	'	'	'	'	'
Total real estate	42,982	'	'	'	'	'
Commercial	459	'	'	'	'	'
Total FDIC covered loans, excluding PCI loans	43,441	'	'	'	'	'
Allowance for loan losses for FDIC covered loans that are not PCI loans	'	'	'	'	'	'
Fdic Covered Loans Purchased Credit Impaired Loans [Member]	'	'	'	'	'	'
Receivables with Imputed Interest [Line Items]	'	'	'	'	'	'
Real estate loans, Residential	115,306	'	120,030	'	'	'
Real estate loans, Commercial	166,932	'	100,012	'	'	'
Land, development and construction	20,509	'	6,381	'	'	'
Total real estate	302,747	'	226,423	'	'	'
Commercial	5,184	'	3,850	'	'	'
Total FDIC covered PCI loans	307,931	'	230,273	'	'	'
Allowance for loan losses for PCI loans	-960	'	-760	'	'	'
Total covered loans, net of allowance for loan losses	$350,412	'	$229,513	'	'	'

Loans_Summary_of_Allowance_for

Loans - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolios (Detail) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Mar. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Consumer and Other [Member]

Consumer and Other [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses on PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Allowance for loan losses for loans that are not PCI loans [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Residential Portfolio Segment [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Commercial and Industrial [Member]

Consumer and Other [Member]

Consumer and Other [Member]

Consumer and Other [Member]

Consumer and Other [Member]

Financing Receivable, Allowance for Credit Losses [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at beginning of period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$18,913

$22,631

$19,694

$24,033

$7,812

$8,100

$8,785

'

$7,338

$7,093

$6,441

'

$1,788

$5,326

$3,069

'

$956

$1,224

$510

'

$1,019

$888

$889

'

Balance at beginning of period, Covered

'

'

'

'

'

'

'

'

'

'

'

'

1,183

2,623

760

2,649

'

'

'

'

623

2,310

138

2,335

89

'

89

'

471

533

314

313

'

'

'

24,033

'

'

'

6,831

'

'

'

8,272

'

'

'

6,211

'

'

'

1,745

'

'

'

974

Balance at beginning of period

20,096

25,254

20,454

26,682

8,066

6,579

711

3,158

1,461

1,043

1,143

889

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans charged-off

'

'

'

'

'

'

'

'

'

'

'

'

'

-515

'

-515

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recoveries of loans previously charged-off

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Charge-offs

-902

-3,118

-2,062

-4,349

'

'

'

'

'

'

'

'

'

-515

'

-515

'

'

'

'

'

-515

'

-515

'

'

'

'

'

'

'

'

-902

-2,603

-2,062

-3,834

-228

-1,569

-915

-2,181

-299

-650

-315

-1,074

-23

-144

-100

-183

-67

-7

-267

-59

-285

-233

-465

-337

Recoveries

112

310

955

473

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

112

310

955

473

-20

153

435

233

61

13

375

40

25

106

48

120

3

11

4

21

43

27

93

59

Net charge-offs

-790

-2,808

-1,107

-3,876

'

'

'

'

'

'

'

'

'

-515

'

-515

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-790

-2,293

-1,107

-3,361

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Provision for loan losses

-106

1,374

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

117

1,462

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

(Recovery) provision for loan losses

'

'

'

'

'

'

'

'

'

'

'

'

-223

-88

200

-114

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

(Recovery) provision for loan losses

-106

1,374

-147

1,014

'

'

'

'

'

'

'

'

-223

-88

200

-114

'

'

'

'

-101

-218

384

-243

-12

130

-12

130

-110

-172

-1

'

117

1,462

-347

1,128

255

3,107

-486

4,908

444

-430

1,043

-1,212

-1,156

-1,217

-2,383

-2,077

208

-164

853

-643

366

166

626

152

Balance at end of period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,240

21,800

18,240

21,800

7,819

9,791

7,819

9,791

7,544

6,026

7,544

6,026

634

4,071

634

4,071

1,100

1,064

1,100

1,064

1,143

848

1,143

848

Balance at end of period

19,200

23,820

19,200

23,820

8,066

6,579

711

3,158

1,461

1,043

1,143

889

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at end of period

'

'

'

'

'

'

'

'

'

'

'

'

$960

$2,020

$960

$2,020

'

'

'

'

$522

$1,577

$522

$1,577

$77

$130

$77

$130

$361

$361

$313

$313

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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 $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	$1,857	'	$1,811	'	'	'
Collectively evaluated for impairment	16,383	'	17,883	'	'	'
Purchased credit impaired	960	'	760	'	'	'
Total ending allowance balance	19,200	20,096	20,454	23,820	25,254	26,682
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	27,263	'	24,110	'	'	'
Loans collectively evaluated for impairment	2,014,066	'	1,218,244	'	'	'
Purchased credit impaired	353,870	'	231,421	'	'	'
Total ending loan balance	2,395,199	'	1,473,775	'	'	'
Residential Real Estate [Member]	'	'	'	'	'	'
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	559	'	395	'	'	'
Collectively evaluated for impairment	7,260	'	8,390	'	'	'
Purchased credit impaired	0	'	'	'	'	'
Total ending allowance balance	7,819	'	8,785	'	'	'
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	9,725	'	8,610	'	'	'
Loans collectively evaluated for impairment	553,568	'	449,721	'	'	'
Purchased credit impaired	119,005	'	120,030	'	'	'
Total ending loan balance	682,298	'	578,361	'	'	'
Commercial Real Estate [Member]	'	'	'	'	'	'
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	1,262	'	1,377	'	'	'
Collectively evaluated for impairment	6,282	'	5,064	'	'	'
Purchased credit impaired	522	'	138	'	'	'
Total ending allowance balance	8,066	'	6,579	'	'	'
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	13,028	'	12,564	'	'	'
Loans collectively evaluated for impairment	1,078,632	'	516,146	'	'	'
Purchased credit impaired	195,157	'	100,012	'	'	'
Total ending loan balance	1,286,817	'	628,722	'	'	'
Land, Development, Construction [Member]	'	'	'	'	'	'
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	6	'	16	'	'	'
Collectively evaluated for impairment	628	'	3,053	'	'	'
Purchased credit impaired	77	'	89	'	'	'
Total ending allowance balance	711	'	3,158	'	'	'
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	2,068	'	1,307	'	'	'
Loans collectively evaluated for impairment	76,376	'	61,196	'	'	'
Purchased credit impaired	27,885	'	6,381	'	'	'
Total ending loan balance	106,329	'	68,884	'	'	'
Commercial and Industrial [Member]	'	'	'	'	'	'
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	10	'	2	'	'	'
Collectively evaluated for impairment	1,090	'	508	'	'	'
Purchased credit impaired	361	'	533	'	'	'
Total ending allowance balance	1,461	'	1,043	'	'	'
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	2,127	'	1,297	'	'	'
Loans collectively evaluated for impairment	249,614	'	141,966	'	'	'
Purchased credit impaired	10,759	'	3,850	'	'	'
Total ending loan balance	262,500	'	147,113	'	'	'
Consumer and Other [Member]	'	'	'	'	'	'
Allowance for loan losses:	'	'	'	'	'	'
Individually evaluated for impairment	20	'	21	'	'	'
Collectively evaluated for impairment	1,123	'	868	'	'	'
Purchased credit impaired	0	'	'	'	'	'
Total ending allowance balance	1,143	'	889	'	'	'
Loans:	'	'	'	'	'	'
Loans individually evaluated for impairment	315	'	332	'	'	'
Loans collectively evaluated for impairment	55,876	'	49,215	'	'	'
Purchased credit impaired	1,064	'	1,148	'	'	'
Total ending loan balance	$57,255	'	$50,695	'	'	'

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014
Loans [Line Items]	'	'
Loans modification, modified terms allowance period minimum	'	'12 months
Loans modification, modified terms allowance period maximum	'	'24 months
Provision for loan loss expense	$339	$398
Partial charge offs for troubled debt restructured	40	96
Percentage of troubled debt restructured current pursuant to modified terms	'	85.00%
Percentage of troubled debt restructured not performing pursuant to their modified terms	'	15.00%
Provision for loan loss expense within twelve months	18	30
Partial charge offs for troubled debt restructured	0	4
Loans at credit risk outstanding	500	500
Non-accretable expected cash flows	7,946	15,240
First Southern Bank Inc And Gulfstream Bancshares Inc [Member]	'	'
Loans [Line Items]	'	'
Allowance for loan losses	'	$0

Loans_Summary_of_Impaired_Loan

Loans - Summary of Impaired Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2014
In Thousands, unless otherwise specified			Scenario, Forecast [Member]
Mortgage Loans on Real Estate [Line Items]	'	'	'
Performing TDRs,(these are not included in NPLs)	$12,659	$10,763	$10,763
Non performing TDRs,(these are included in NPLs)	2,281	4,684	4,684
Total TDRs (these are included in impaired loans)	14,940	15,447	15,447
Impaired loans that are not TDRs	12,323	'	8,663
Total impaired loans	$27,263	$24,110	$24,110

Loans_Troubled_Debt_Restructur

Loans - Troubled Debt Restructured Loans by Loans Type (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	$12,659	$10,763
Non performing TDRs	2,281	4,684
Total TDRs	14,940	15,447
Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	699	555
Non performing TDRs	37	49
Total TDRs	736	604
Residential Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	7,932	7,221
Non performing TDRs	806	1,389
Total TDRs	8,738	8,610
Commercial Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	3,247	2,169
Non performing TDRs	1,292	3,077
Total TDRs	4,539	5,246
Land, Development, Construction [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	569	608
Non performing TDRs	43	47
Total TDRs	612	655
Total Real Estate Loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	11,748	9,998
Non performing TDRs	2,141	4,513
Total TDRs	13,889	14,511
Consumer and Other [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing TDRs	212	210
Non performing TDRs	103	122
Total TDRs	$315	$332

Loans_Summary_of_Loans_by_Clas

Loans - Summary of Loans by Class Modified (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
	SecurityLoan	SecurityLoan
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	1	12
Recorded investment	$196	$2,848
Residential Real Estate [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	'	3
Recorded investment	'	553
Commercial Real Estate [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	1	6
Recorded investment	196	2,244
Commercial Loans and Industrial [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	'	2
Recorded investment	'	34
Consumer and Other [Member]	'	'
Mortgage Loans on Real Estate [Line Items]	'	'
Number of loans	'	1
Recorded investment	'	$17

Loans_Summary_of_Loans_Individ

Loans - Summary of Loans Individually Evaluated for Impairment by Class of Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance	$28,841	$26,882
Total impaired loans	27,263	24,110
Amount of allowance for loan losses allocated to impaired loans	1,857	1,811
Residential Real Estate [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance, With no allowance recorded	7,253	5,052
Unpaid principal balance, With an allowance recorded	2,885	3,942
Recorded investment, With no related allowance	6,992	4,803
Recorded investment, With an allowance recorded	2,733	3,807
Amount of allowance for loan losses allocated to impaired loans	559	395
Commercial Real Estate [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance, With no allowance recorded	6,920	9,330
Unpaid principal balance, With an allowance recorded	6,459	5,257
Recorded investment, With no related allowance	6,812	7,439
Recorded investment, With an allowance recorded	6,216	5,125
Amount of allowance for loan losses allocated to impaired loans	1,262	1,377
Land, Development, Construction [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance, With no allowance recorded	2,550	1,377
Unpaid principal balance, With an allowance recorded	138	147
Recorded investment, With no related allowance	1,938	1,168
Recorded investment, With an allowance recorded	130	139
Amount of allowance for loan losses allocated to impaired loans	6	16
Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance, With no allowance recorded	2,055	1,330
Unpaid principal balance, With an allowance recorded	251	102
Recorded investment, With no related allowance	1,922	1,241
Recorded investment, With an allowance recorded	205	56
Amount of allowance for loan losses allocated to impaired loans	10	2
Consumer and Other [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Unpaid principal balance, With no allowance recorded	'	5
Unpaid principal balance, With an allowance recorded	330	340
Recorded investment, With no related allowance	'	5
Recorded investment, With an allowance recorded	315	327
Amount of allowance for loan losses allocated to impaired loans	$20	$21

Loans_Summary_of_Impairment_by

Loans - Summary of Impairment by Class of Loans (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	$26,909	$39,398	$26,125	$41,757
Interest income recognized during impairment	161	375	299	718
Residential Real Estate [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	9,635	8,777	9,358	9,108
Interest income recognized during impairment	87	70	164	143
Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	12,858	27,192	12,742	28,730
Interest income recognized during impairment	43	288	71	545
Land, Development, Construction [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	1,764	1,407	1,575	1,417
Interest income recognized during impairment	10	6	19	8
Total Real Estate Loans [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	24,257	37,376	23,675	39,255
Interest income recognized during impairment	140	364	254	696
Commercial Loans and Industrial [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	2,332	1,656	2,126	2,124
Interest income recognized during impairment	18	8	39	16
Consumer and Other Loans [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average of impaired loans during the period	320	366	324	378
Interest income recognized during impairment	$3	$3	$6	$6

Loans_Summary_of_Nonperforming

Loans - Summary of Nonperforming Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary Of Nonperforming Loans [Abstract]	'	'
Non accrual loans	$29,667	$27,077
Loans past due over 90 days and still accruing interest	0	'
Total non performing loans	$29,667	$27,077

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 $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	$29,667	$27,077
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	11,292	10,162
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	13,991	13,925
Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	1,900	1,099
Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	2,216	1,582
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Nonaccrual, Total	$268	$309

Loans_Summary_Aging_of_Recorde

Loans - Summary Aging of Recorded Investment in Past Due Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	$2,041,329	$1,242,354
30 - 59 days past due	9,403	6,143
60 - 89 days past due	3,747	4,365
Total Past Due	13,150	10,508
Loans Not Past Due	1,998,512	1,204,769
Nonaccrual Loans	29,667	27,077
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	563,293	458,331
30 - 59 days past due	2,402	2,801
60 - 89 days past due	1,892	1,942
Total Past Due	4,294	4,743
Loans Not Past Due	547,707	443,426
Nonaccrual Loans	11,292	10,162
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	1,091,660	528,710
30 - 59 days past due	3,001	2,420
60 - 89 days past due	473	1,941
Total Past Due	3,474	4,361
Loans Not Past Due	1,074,195	510,424
Nonaccrual Loans	13,991	13,925
Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	78,444	62,503
30 - 59 days past due	1,866	136
60 - 89 days past due	254	241
Total Past Due	2,120	377
Loans Not Past Due	74,424	61,027
Nonaccrual Loans	1,900	1,099
Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	251,741	143,263
30 - 59 days past due	1,909	491
60 - 89 days past due	1,048	1
Total Past Due	2,957	492
Loans Not Past Due	246,568	141,189
Nonaccrual Loans	2,216	1,582
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total	56,191	49,547
30 - 59 days past due	225	295
60 - 89 days past due	80	240
Total Past Due	305	535
Loans Not Past Due	55,618	48,703
Nonaccrual Loans	$268	$309

Loans_Risk_Category_of_Loans_b

Loans - Risk Category of Loans by Class of Loans, Excluding Purchased Credit Impaired Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	$563,293	$458,331
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	56,191	49,547
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	1,912,188	1,110,946
Pass [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	534,622	428,671
Pass [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	1,012,363	448,762
Pass [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	66,080	50,164
Pass [Member] | Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	243,632	134,901
Pass [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	55,491	49,448
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	56,761	67,447
Special Mention [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	5,313	6,438
Special Mention [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	39,951	46,427
Special Mention [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	8,637	9,566
Special Mention [Member] | Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	2,586	4,490
Special Mention [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	274	526
Substandard [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	72,380	63,961
Substandard [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	23,358	23,222
Substandard [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	39,346	33,521
Substandard [Member] | Land, Development, Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	3,727	2,773
Substandard [Member] | Commercial Loans and Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	5,523	3,872
Substandard [Member] | Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	$426	$573

Loans_Investment_in_Residentia

Loans - Investment in Residential and Consumer Loans, Excluding Loans from Purchased Credit Impaired Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	$563,293	$458,331
Residential Real Estate [Member] | Performing [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	552,001	448,169
Residential Real Estate [Member] | Nonperforming [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	11,292	10,162
Consumer and Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	56,191	49,547
Consumer and Other [Member] | Performing [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	55,923	49,238
Consumer and Other [Member] | Nonperforming [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans	$268	$309

Loans_Summary_of_Total_Contrac

Loans - Summary of Total Contractually Required Principal and Interest Cash Payments, Management's Estimate of Expected Total Cash Payments and Carrying Value of Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
Contractually required principal and interest	$566,948	$389,537
Non-accretable difference	-79,985	-55,304
Cash flows expected to be collected	486,963	334,233
Accretable yield	-133,093	-102,812
Carrying value of acquired loans	353,870	231,421
Allowance for loan losses	-960	-760
Carrying value less allowance for loan losses	$352,910	$230,661

Loans_Summary_of_Changes_in_To

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

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

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

$566,948

$389,537

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$414,385

$486,531

$389,537

$534,989

Non-accretable difference, beginning balance

-79,985

-55,304

'

'

'

'

'

'

'

'

'

'

'

'

-56,062

-110,243

-55,304

-142,855

'

'

'

'

Cash flows expected to be collected, beginning balance

486,963

334,233

'

'

'

'

'

'

'

'

358,323

376,288

334,233

392,134

'

'

'

'

'

'

'

'

Accretable yield, beginning balance

-133,093

-102,812

'

'

'

'

-107,523

-95,499

-102,812

-93,107

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value of acquired loans

353,870

231,421

250,800

280,789

231,421

299,027

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effect of acquisitions

'

'

121,684

'

151,752

'

-25,749

'

-32,204

'

147,433

'

183,956

'

-33,527

'

-45,293

'

180,960

'

229,249

'

Income accretion

'

'

8,231

8,020

16,462

15,847

8,231

8,020

16,462

15,847

'

'

'

'

'

'

'

'

'

'

'

'

All other adjustments

'

'

-26,845

-29,130

-45,765

-55,195

-8,052

-11,928

-14,539

-22,147

-18,793

-17,202

-31,226

-33,048

9,604

20,183

20,612

52,795

-28,397

-37,385

-51,838

-85,843

Contractually required principal and interest, ending balance

566,948

389,537

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

566,948

449,146

566,948

449,146

Non-accretable difference, ending balance

-79,985

-55,304

'

'

'

'

'

'

'

'

'

'

'

'

-79,985

-90,060

-79,985

-90,060

'

'

'

'

Cash flows expected to be collected, ending balance

486,963

334,233

'

'

'

'

'

'

'

'

486,963

359,086

486,963

359,086

'

'

'

'

'

'

'

'

Accretable yield, ending balance

-133,093

-102,812

'

'

'

'

-133,093

-99,407

-133,093

-99,407

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value of acquired loans

$353,870

$231,421

$353,870

$259,679

$353,870

$259,679

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

FDIC_Indemnification_Asset_Add

FDIC Indemnification Asset - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010
	Bank		Bank	Bank
Fdic Indemnification Asset [Abstract]	'	'	'	'
Number of acquisitions under agreement	2	'	2	3
Federal Deposit Insurance Corporation reimbursable expenses	$160	($513)	'	'

FDIC_Indemnification_Asset_FDI

FDIC Indemnification Asset - FDIC Loss Share Indemnification Asset (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fdic Loss Share Indemnification Asset [Abstract]	'	'
Beginning of the year	$73,877	$119,691
Effect of acquisition	2,636	'
Amortization, net	-10,161	-13,765
Indemnification revenue	1,529	6,055
Indemnification of foreclosure expense	780	4,413
Proceeds from FDIC	-7,510	-42,004
Impairment (recovery) of loan pool	160	-513
Period end balance	$61,311	$73,877

FDIC_Indemnification_Asset_FDI1

FDIC Indemnification Asset - FDIC Activity In True-up Payment Liability (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fdic Loss Share Indemnification Asset [Abstract]	'	'
Beginning of the year	$444	$402
Effect of acquisition	682	'
True-up liability accrual	30	42
Period end balance	$1,156	$444

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (USD $)

3 Months Ended

0 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jan. 17, 2014

Jun. 30, 2014

Jan. 17, 2014

Jun. 30, 2014

Jan. 17, 2014

Jan. 17, 2014

Jun. 04, 2014

Jun. 01, 2014

Jan. 16, 2014

Jun. 04, 2014

Jun. 01, 2014

30-May-14

Jan. 16, 2014

Jun. 04, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 01, 2014

Jun. 01, 2014

Subsequent Event [Member]

Gulfstream Bancshares, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Branch

Core Deposits [Member]

Purchased Credit-Impaired [Member]

Common Stock [Member]

Branch

Sales [Member]

Core Deposits [Member]

Purchased Credit-Impaired [Member]

Purchased Credit-Impaired [Member]

Common Stock [Member]

Branch

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in total assets

'

'

'

23.00%

'

'

'

'

'

'

32.00%

'

'

'

'

'

'

'

'

'

'

Increase in total deposits

'

'

'

23.00%

'

'

'

'

'

'

33.00%

'

'

'

'

'

'

'

'

'

'

Goodwill on the acquisition

$76,981,000

$44,924,000

'

'

'

$31,516,000

'

'

'

'

'

'

'

$541,000

'

'

'

'

'

'

'

Fair value estimates change period

'

'

'

'1 year

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

Outstanding common stock acquired percentage

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

100.00%

Exchanged price

'

'

'

'

'

$14.65

'

'

'

'

'

'

'

$3

'

$3

'

'

'

'

'

Exchanged ratio for share

'

'

'

'

'

3.012

'

'

'

'

'

'

'

0.3

0.3

'

'

'

'

'

'

Total purchase consideration

'

'

'

82,040,000

'

'

'

'

'

6,500,000

195,404,000

195,404,000

'

'

'

'

'

'

'

'

'

Loans at fair value

'

'

'

'

'

359,583,000

'

'

'

'

'

'

'

599,525,000

'

'

'

'

'

'

'

Net Outstanding principal balance

'

'

'

18,267,000

'

'

'

'

'

'

30,811,000

'

'

'

'

'

'

'

'

'

'

Estimated discount to outstanding principal balance

'

'

'

'

'

4.80%

'

'

'

'

'

'

'

4.90%

'

'

'

'

'

'

'

Percentage of loans acquired

'

'

'

'

'

24.40%

'

'

'

'

'

'

'

33.00%

'

'

'

'

'

'

'

Loans with credit deficiencies

'

'

'

'

'

'

'

30,068,000

'

'

'

'

'

'

'

'

'

'

121,684,000

121,684,000

'

Loan relationship balances

'

'

'

'

'Greater than $500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deposit intangible asset

'

'

'

'

'

'

4,173,000

'

'

'

'

'

'

'

'

'

'

7,396,000

'

'

'

Estimated economic life

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

Maximum period for refinement of fair values

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of branch offices sold

'

'

'

'

'

'

'

'

'

6

'

'

'

'

'

'

5

'

'

'

'

Percentage of premium on purchase consideration

'

'

'

'

'

'

'

'

'

1.50%

'

'

'

'

'

'

'

'

'

'

'

Deposit balances to be assumed

'

'

'

'

'

'

'

'

'

'

'

'

200,000,000

'

'

'

'

'

'

'

'

Number of branches closed

'

'

3

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

Number of branches in leased facilities

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Number of branches owned

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Recognized expense related to future lease

$0

'

$1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business_Combinations_Summary_

Business Combinations - Summary of Purchase Price Calculation (Detail) (USD $)	0 Months Ended		0 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 17, 2014	Jan. 17, 2014	Jun. 04, 2014	Jun. 01, 2014	30-May-14	Jan. 16, 2014	Jun. 01, 2014	30-May-14	Jan. 16, 2014
	Gulfstream Bancshares, Inc. [Member]	Gulfstream Bancshares, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'
Number of shares of FSB common stock outstanding at May 30, 2014	'	1,569,364	'	'	'	'	'	31,539,698	'
FSB preferred shares that convert to FSB common shares upon a change in control	'	155,629	'	'	'	'	'	48,375	'
Total FSB common shares including conversion of preferred shares	'	1,724,993	'	'	'	'	'	31,588,073	31,588,073
Per share exchange ratio	'	3.012	'	'	'	'	0.3	0.3	'
Number of shares of CenterState common stock	5,195,541	'	'	'	9,476,424	'	'	'	'
Multiplied by CenterState common stock price per share on January 16, 2014	'	$10.23	'	'	'	'	'	'	$10.62
Fair value of CenterState common stock issued	$53,150	'	'	'	'	$100,639	'	'	'
Total FSB common shares including conversion of preferred shares	'	1,724,993	'	'	'	'	'	31,588,073	31,588,073
Multiplied by the cash consideration each FSB share is entitled to receive	'	$14.65	'	'	'	'	$3	'	$3
Total Cash Consideration	25,271	'	'	'	'	94,765	'	'	'
Total Stock Consideration	53,150	'	'	'	'	100,639	'	'	'
Total Cash Consideration	25,273	'	'	'	'	94,765	'	'	'
Total consideration to be paid to Gulfstream common shareholders	78,423	'	'	'	'	'	'	'	'
Fair value of current Gulfstream stock options to be converted to CenterState stock options	'	3,617	'	'	'	'	'	'	'
Total purchase price	$82,040	'	$6,500	$195,404	'	$195,404	'	'	'

Business_Combinations_Summary_1

Business Combinations - Summary of Purchase Price Calculation (Parenthetical) (Detail) (Gulfstream Bancshares, Inc. [Member], USD $)	Jan. 17, 2014
In Thousands, except Share data, unless otherwise specified
Gulfstream Bancshares, Inc. [Member]	'
Business Acquisition [Line Items]	'
Fractional shares	138
Fractional shares amount	$2

Business_Combinations_Summary_2

Business Combinations - Summary of Preliminary Estimates of Fair Value of Assets Purchased, Including Goodwill and Liabilities Assumed (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jan. 17, 2014	Jun. 01, 2014
In Thousands, unless otherwise specified			Gulfstream Bancshares, Inc. [Member]	First Southern Bancorp, Inc. [Member]
Assets:	'	'	'	'
Cash and cash equivalents	'	'	$102,278	$148,257
Loans, excluding purchased credit impaired loans	'	'	329,515	477,841
Purchased credit impaired loans	'	'	30,068	121,684
Loans held for sale	'	'	247	'
Investments	'	'	60,816	204,723
Interest receivable	'	'	1,087	2,007
Branch real estate	'	'	5,519	1,594
Furniture and fixtures	'	'	262	1,282
Bank property held for sale	'	'	'	7,119
Federal Reserve Bank and Federal Home Loan Bank stock	'	'	885	5,576
Bank owned life insurance	'	'	4,939	2,555
Other repossessed real estate owned covered by FDIC loss share agreements	30,698	19,111	'	22,731
Other repossessed real estate owned	'	'	2,694	454
Core deposit intangible	'	'	4,173	7,396
Goodwill	76,981	44,924	31,516	541
Deferred tax asset	'	'	'	43,889
Other assets	'	'	11,261	4,581
Total assets acquired	'	'	585,260	1,052,230
Liabilities:	'	'	'	'
Deposits	'	'	478,999	662,959
Federal Home loan advances	'	'	5,708	'
Deposits held for sale	'	'	'	189,674
Repurchase agreements	'	'	7,576	'
Interest payable	'	'	125	58
Official checks outstanding	'	'	826	'
Corporate debentures	'	'	6,745	'
Other liabilities	'	'	3,241	4,135
Total liabilities assumed	'	'	$503,220	$856,826

Business_Combinations_Summary_3

Business Combinations - Summary of Contractually Required Principal and Interest Cash Payments for Purchased Credit Impaired Loans (Detail) (Purchased Credit-Impaired [Member], USD $)	Jan. 17, 2014	Jun. 30, 2014	Jun. 01, 2014
In Thousands, unless otherwise specified	Gulfstream Bancshares, Inc. [Member]	First Southern Bancorp, Inc. [Member]	First Southern Bancorp, Inc. [Member]
Business Acquisition [Line Items]	'	'	'
Contractually required principal and interest	$48,289	'	$180,960
Non-accretable difference	-11,766	'	-33,527
Cash flows expected to be collected	36,523	'	147,433
Accretable yield	-6,455	'	-25,749
Total purchased credit-impaired loans acquired	$30,068	$121,684	$121,684

Business_Combinations_Summary_4

Business Combinations - Summary of Fair Value of Acquired Loans and Unpaid Principal Balance (Detail) (USD $)

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

Jan. 17, 2014

Jun. 01, 2014

In Thousands, unless otherwise specified

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Book Balance [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Fair Value [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Single Family Residential Real Estate [Member]

Single Family Residential Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Commercial Loans and Industrial [Member]

Commercial Loans and Industrial [Member]

Consumer and Other Loans [Member]

Consumer and Other Loans [Member]

Purchased Credit-Impaired [Member]

Purchased Credit-Impaired [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Single Family Residential Real Estate [Member]

Single Family Residential Real Estate [Member]

Commercial Real Estate [Member]

Commercial Real Estate [Member]

Land, Development, Construction [Member]

Land, Development, Construction [Member]

Commercial Loans and Industrial [Member]

Commercial Loans and Industrial [Member]

Consumer and Other Loans [Member]

Consumer and Other Loans [Member]

Purchased Credit-Impaired [Member]

Purchased Credit-Impaired [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Gulfstream Bancshares, Inc. [Member]

First Southern Bancorp, Inc. [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value and Fair value of acquired loans

$359,583

$599,525

$377,850

$630,336

$33,506

$60,332

$185,250

$387,589

$30,387

$17,238

$85,940

$20,267

$2,112

$2,496

$40,655

$142,414

$359,583

$599,525

$32,319

$57,693

$183,189

$382,162

$27,704

$15,942

$84,203

$19,906

$2,100

$2,138

$30,068

$121,684

Business_Combinations_Schedule

Business Combinations - Schedule of Measurement Period Adjustments (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jan. 17, 2014	Jan. 17, 2014	Jan. 17, 2014
In Thousands, unless otherwise specified			Gulfstream Bancshares, Inc. [Member]	As Initially Reported [Member]	Measurement Period Adjustments [Member]
				Gulfstream Bancshares, Inc. [Member]	Gulfstream Bancshares, Inc. [Member]
Assets:	'	'	'	'	'
Cash and cash equivalents	'	'	$102,278	$102,278	$0
Loans, held for investment	'	'	329,515	329,515	'
Purchased credit impaired loans	'	'	30,068	30,068	'
Loans held for sale	'	'	247	247	'
Investments	'	'	60,816	60,816	'
Interest receivable	'	'	1,087	1,087	'
Branch real estate	'	'	5,519	5,519	'
Furniture and fixtures	'	'	262	262	'
FHLB stock	'	'	885	885	'
Bank owned life insurance	'	'	4,939	4,939	'
Other repossessed real estate owned	'	'	2,694	3,365	-671
Core deposit intangible	'	'	4,173	4,173	'
Goodwill	76,981	44,924	31,516	31,104	412
Other assets	'	'	11,261	11,002	259
Total assets acquired	'	'	585,260	585,260	0
Liabilities:	'	'	'	'	'
Deposits	'	'	478,999	478,999	0
Federal Home loan advances	'	'	5,708	5,708	'
Repurchase agreements	'	'	7,576	7,576	'
Interest payable	'	'	125	125	'
Official checks outstanding	'	'	826	826	'
Trust Preferred Security	'	'	6,745	6,745	'
Other liabilities	'	'	3,241	3,241	'
Total liabilities assumed	'	'	$503,220	$503,220	$0

Business_Combinations_ProForma

Business Combinations - Pro-Forma Financial Information And Actual Results of Acquisition (Detail) (First Southern Bank Inc And Gulfstream Bancshares Inc [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
First Southern Bank Inc And Gulfstream Bancshares Inc [Member]	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Net interest income	$37,617	$37,252	$75,434	$74,835
Net income available to common shareholders	$5,277	$5,129	$8,524	$11,525
EPS - basic	$0.12	$0.11	$0.19	$0.26
EPS - diluted	$0.12	$0.11	$0.19	$0.26