Income Taxes - Deferred Tax Assets, Net (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Deferred tax assets:
Allowance for loan losses	$ 10,671	$ 12,880
Other than temporary impairment	807	807
Accrued liabilities	213	276
OREO property	1,594	1,268
Net operating loss	6,511	7,281
Sidus goodwill	953	1,050
Other	1,887	1,798
Deferred tax assets, gross	22,636	25,360
Less: Valuation Allowance	0	(11,000)
Deferred tax assets, net of valuation allowance	22,636	14,360
Deferred tax liabilities:
Unrealized gain on available-for-sale securities	(3,002)	(2,387)
FMV adjustment related to mergers	(177)	(255)
Depreciation	(1,688)	(1,980)
Prepaid expenses	(358)	(327)
Other	(146)	(195)
Deferred tax liabilities	(6,666)	(6,761)
Net deferred tax asset	15,970	7,599
Core deposit intangible
Deferred tax liabilities:
Intangibles	(1,146)	(1,468)
Noncompete intangible
Deferred tax liabilities:
Intangibles	$ (149)	$ (149)