Income Taxes - Deferred Tax Assets, Net (Details) (USD $)	0 Months Ended	3 Months Ended									6 Months Ended	12 Months Ended			30 Months Ended	36 Months Ended
	Oct. 23, 2012	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013
Components of Deferred Tax Assets and Liabilities
Income (loss) before income taxes		$ 7,236,000	$ 38,500,000	$ 7,327,000	$ 7,407,000	$ 7,257,000	$ (38,531,000)	$ 811,000	$ 1,614,000	$ 3,471,000		$ 29,227,000	$ (32,635,000)	$ (7,701,000)	$ 43,900,000	$ (11,109,000)
Financing Receivable, Allowance for Credit Losses, Write-downs			49,000,000									7,872,000	51,756,000
Proceeds from issuance of mandatorily convertible cumulative non-voting perpetual preferred stock	45,000,000
Deferred tax assets:
Allowance for loan losses		6,956,000	9,853,000									6,956,000	9,853,000		6,956,000	6,956,000
Other than temporary impairment		829,000	827,000									829,000	827,000		829,000	829,000
Accrued liabilities		55,000	220,000									55,000	220,000		55,000	55,000
OREO property		178,000	3,767,000									178,000	3,767,000		178,000	178,000
Net operating loss		14,375,000	19,627,000									14,375,000	19,627,000		14,375,000	14,375,000
Sidus goodwill		779,000	921,000									779,000	921,000		779,000	779,000
Other		3,243,000	2,160,000									3,243,000	2,160,000		3,243,000	3,243,000
Deferred tax assets, gross		26,415,000	37,375,000									26,415,000	37,375,000		26,415,000	26,415,000
Less: Valuation Allowance		0	0									0	0		0	0
Deferred tax assets, net of valuation allowance		26,415,000	37,375,000									26,415,000	37,375,000		26,415,000	26,415,000
Deferred tax liabilities:
Unrealized gain on available-for-sale securities		(3,000)	(2,583,000)									(3,000)	(2,583,000)		(3,000)	(3,000)
FMV adjustment related to mergers		(97,000)	(181,000)									(97,000)	(181,000)		(97,000)	(97,000)
Depreciation		(1,753,000)	(1,561,000)									(1,753,000)	(1,561,000)		(1,753,000)	(1,753,000)
Prepaid expenses		(342,000)	(358,000)									(342,000)	(358,000)		(342,000)	(342,000)
Other		(6,000)	(142,000)									(6,000)	(142,000)		(6,000)	(6,000)
Deferred tax liabilities		(2,990,000)	(6,017,000)									(2,990,000)	(6,017,000)		(2,990,000)	(2,990,000)
Net deferred tax asset		23,425,000	31,358,000									23,425,000	31,358,000		23,425,000	23,425,000
Valuation allowance, deferred tax asset, change in amount											11,000,000
Core deposit intangible
Deferred tax liabilities:
Intangibles		(765,000)	(1,043,000)									(765,000)	(1,043,000)		(765,000)	(765,000)
Noncompete intangible
Deferred tax liabilities:
Intangibles		$ (24,000)	$ (149,000)									$ (24,000)	$ (149,000)		$ (24,000)	$ (24,000)