Selected Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Selected Quarterly Financial Data (Unaudited) [Abstract]
Interest income	$ 14,317,000	$ 15,041,000	$ 15,845,000	$ 15,244,000	$ 17,321,000	$ 18,197,000	$ 19,596,000	$ 20,319,000	$ 60,447,000	$ 75,433,000	$ 86,276,000
Interest expense	829,000	887,000	967,000	1,036,000	1,091,000	1,214,000	1,708,000	1,912,000	3,719,000	5,925,000	9,714,000
Net Interest Income	13,488,000	14,154,000	14,878,000	14,208,000	16,230,000	16,983,000	17,888,000	18,407,000	56,728,000	69,508,000	76,562,000
Consolidated provision for loan losses	(1,100,000)	12,000,000	(2,400,000)	0	800,000	900,000	3,217,000	19,971,000	8,500,000	24,888,000	32,086,000
Net Interest Income After Provision for Loan Losses	14,588,000	2,154,000	17,278,000	14,208,000	15,430,000	16,083,000	14,671,000	(1,564,000)	48,228,000	44,620,000	44,476,000
Non-interest income	4,344,000	1,881,000	2,401,000	2,255,000	1,365,000	2,432,000	4,103,000	2,221,000	10,881,000	10,121,000	11,253,000
Operating expenses	15,656,000	17,171,000	14,139,000	14,605,000	15,312,000	14,927,000	15,030,000	13,773,000	61,571,000	59,042,000	50,778,000
Provision (benefit) for income taxes	1,231,000	(3,975,000)	1,340,000	690,000	329,000	516,000	474,000	(5,542,000)	(714,000)	(4,223,000)	(1,305,000)
NET (LOSS) INCOME	2,045,000	(9,161,000)	4,200,000	1,168,000	1,154,000	3,072,000	3,270,000	(7,574,000)	(1,748,000)	(78,000)	6,256,000
Basic per-share data [Abstract]
Net income (loss) (in dollars per share)	$ 0.18	$ (0.94)	$ 0.43	$ 0.12	$ 0.12	$ 0.32	$ 0.34	$ (0.78)	$ (0.17)	$ (0.01)	$ 0.65
Cash dividends (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Average shares outstanding (in shares)	11,566,347	9,837,959	9,726,814	9,726,814	9,726,814	9,726,948	9,723,360	9,705,888	10,248,751	9,720,827	9,658,534
Proceeds from Sale of Loans Receivable		51,000,000							56,993,000	0	0
Sale of loans receivable price percentage of book value (in hundredths)		61.00%
Allowance for credit losses loans sold charged off		19,600,000							28,600,000
Other Asset Impairment Charges		1,900,000							2,254,000	532,000	229,000
Gain (Loss) on Sales of Loans, Net	$ 1,500,000								$ 755,000	$ 0	$ 0