Income Taxes - Valuation Allowance (Details) (USD $)	0 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended				21 Months Ended	36 Months Ended	0 Months Ended
	Oct. 23, 2012	Mar. 31, 2013		Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2010		Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 31, 2013	Jun. 30, 2012	Sep. 12, 2012 Preferred Stock [Member]
Income Tax Disclosure [Abstract]
Valuation Allowance, Cumulative Tax Loss Position		$ (31,200,000)						$ (31,200,000)				$ (31,200,000)
INCOME (LOSS) BEFORE INCOME TAXES		7,257,000	[1]		3,471,000	(3,072,000)	[2]		(32,635,000)	(7,701,000)		22,000,000	(36,151,000)
Goodwill impairment		0	[1]			0	[2]			4,944,000			4,944,000
Tax loss position		7,257,000	[1]			(3,072,000)	[2]		(32,635,000)		(2,757,000)		(31,207,000)
Management projecting full utilization of tax benefits within				3 years					3 years
Valuation Allowance [Line Items]
PROVISION FOR LOAN LOSSES		237,000			2,350,000
Gain (Loss) on Sale of Loans and Leases									35,000,000
Gain (Loss) on Disposition of Foreclosed Assets				7,000,000
Proceeds from Issuance of Convertible Preferred Stock	45,000,000
Charge-offs		1,651,000		49,000,000	5,378,000
Conversion of Stock, Amount Converted														21,000,000
Tier One Leverage Capital to Average Assets		10.00%						10.00%				10.00%
Tier One Risk Based Capital to Risk Weighted Assets		12.60%						12.60%				12.60%
Capital to Risk Weighted Assets		13.80%						13.80%				13.80%
Loans and Leases Receivable, Increase (Decrease) in Nonperforming Loans								$ (42,400,000)
Nonperforming Assets to Total Assets		1.58%		4.80%				1.58%	4.80%			1.58%
Allowance For Loan Losses to Nonperforming Loans		103.29%			45.49%			103.29%				103.29%

[1] First three months of 2013

[2] *2nd, 3rd and 4th quarter of 2010