Consolidated Statements Of Operations (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income:
Interest and fees on loans	$ 84,602,000	$ 113,223,000	$ 133,918,000
Investment securities:
U.S. Government and agency obligations	1,714,000	1,500,000	2,006,000
Mortgage-backed securities	4,718,000	5,046,000	5,630,000
State and political subdivisions	1,060,000	411,000	285,000
Other securities	322,000	16,000	227,000
Other interest-earning assets	755,000	549,000	741,000
Total interest income	93,171,000	120,745,000	142,807,000
Interest expense:
Interest-bearing demand	219,000	382,000	468,000
Money market accounts	1,077,000	2,154,000	3,911,000
Savings accounts	53,000	49,000	64,000
Time deposits of $100,000 or more	4,302,000	7,617,000	13,372,000
Other time deposits	4,052,000	6,591,000	10,452,000
Other borrowings	895,000	1,799,000	2,079,000
Interest on subordinated debentures	6,010,000	5,821,000	5,130,000
Total interest expense	16,608,000	24,413,000	35,476,000
Net interest income	76,563,000	96,332,000	107,331,000
Provision for loan losses	3,107,000	132,101,000	35,560,000
Net interest income (loss) after provision for loan losses	73,456,000	(35,769,000)	71,771,000
Noninterest income:
Service charges and fees	11,559,000	12,075,000	12,404,000
Other noninterest income	407,000	285,000	763,000
Gain on sales of loans, net	3,133,000	1,658,000	2,736,000
Gain on sale/call of investment securities, net	837,000		2,661,000
Total noninterest income	15,936,000	14,018,000	18,564,000
Noninterest expense:
Salaries and employee benefits	29,919,000	29,880,000	29,916,000
Occupancy	10,581,000	10,815,000	11,171,000
FDIC and other insurance	2,531,000	3,862,000	5,788,000
Other real estate, net	6,565,000	30,852,000	2,218,000
General and administrative	13,726,000	14,792,000	14,540,000
Goodwill impairment	0	0	5,597,000
Total noninterest expense	63,322,000	90,201,000	69,230,000
Income (loss) before taxes	26,070,000	(111,952,000)	21,105,000
Taxes on income	9,883,000	(43,657,000)	9,738,000
Net income (loss)	16,187,000	(68,295,000)	11,367,000
Net income (loss) available to common shareholders	$ 12,446,000	$ (72,548,000)	$ 7,180,000
Basic earnings per common share	$ 0.64	$ (3.73)	$ 0.40
Diluted earnings per common share	$ 0.64	$ (3.73)	$ 0.40
Cash dividends declared per share