Income Taxes - Deferred Tax Assets, Net (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Allowance for loan losses	$ 9,595	$ 9,853
Other than temporary impairment	842	827
Accrued liabilities	199	220
OREO property	900	3,767
Net operating loss	20,063	19,627
Sidus goodwill	888	921
Other	1,979	2,160
Deferred tax assets, gross	34,466	37,375
Less: Valuation Allowance	0	0
Deferred tax assets, net of valuation allowance	34,466	37,375
Deferred tax liabilities:
Unrealized gain on available-for-sale securities	(2,350)	(2,583)
FMV adjustment related to mergers	(154)	(181)
Depreciation	(1,561)	(1,561)
Prepaid expenses	(358)	(358)
Other	(139)	(142)
Deferred tax liabilities	(5,684)	(6,017)
Net deferred tax asset	28,782	31,358	[1]
Core deposit intangible
Deferred tax liabilities:
Intangibles	(973)	(1,043)
Noncompete intangible
Deferred tax liabilities:
Intangibles	$ (149)	$ (149)

[1] Derived from audited consolidated financial statements