Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities
Net income (loss)	$ 12,535,000	$ 37,485,000	$ (13,316,000)
Adjustments to reconcile net income (loss) to net cash from (for) operating activities:
Depreciation and amortization	2,238,000	2,200,000	2,440,000
Provision for loan losses	(3,100,000)	6,900,000	31,800,000
Deferred income tax expense (benefit)	5,636,000	(27,361,000)	(47,000)
Stock-based compensation expense	54,000	61,000	275,000
Proceeds from sales of mortgage loans held for sale	83,713,000	50,925,000	66,795,000
Origination of mortgage loans held for sale	(83,986,000)	(50,195,000)	(66,104,000)
Net gain on sale of mortgage loans held for sale	(1,247,000)	(681,000)	(846,000)
Net gain on sale of held to maturity securities	0	0	(476,000)
Gain on sale of commercial loans	0	0	(324,000)
Net (gain) loss on sale and write-down of premises and equipment	0	0	(2,000)
Net loss on sale and valuation write-downs of foreclosed assets	1,725,000	1,826,000	4,432,000
Recognition of unrealized gain on interest rate swaps	0	0	(99,000)
Earnings on bank owned life insurance	(1,528,000)	(1,777,000)	(1,718,000)
Net change in:
Accrued interest receivable	529,000	1,539,000	1,146,000
Other assets	(1,805,000)	2,771,000	7,540,000
Accrued interest and other liabilities	2,257,000	(1,187,000)	(1,894,000)
Net cash from operating activities	17,021,000	22,506,000	29,602,000
Purchases of:
Securities available for sale	(69,956,000)	(28,835,000)	(106,329,000)
Proceeds from:
Maturities, calls and repayments of securities available for sale	102,672,000	80,739,000	107,480,000
Proceeds from sale of held to maturity securities	0	0	20,452,000
Proceeds from Federal Home Loan Bank stock redemption	0	2,384,000	1,336,000
Loan originations and payments, net	16,237,000	162,928,000	226,563,000
Proceeds from sale of commercial loans	0	0	7,395,000
Purchases of premises and equipment, net	(571,000)	(556,000)	(118,000)
Proceeds from sale of foreclosed assets	18,348,000	11,062,000	14,900,000
Net cash from investing activities	66,730,000	227,722,000	271,679,000
Cash flows from financing activities
Net decrease in time deposits	(47,257,000)	(210,617,000)	(331,638,000)
Net increase in all other deposits	70,386,000	48,860,000	203,843,000
Net increase (decrease) in securities sold under agreements to repurchase	(7,804,000)	(44,410,000)	17,224,000
Net increase (decrease) in federal funds purchased	0	0	(2,600,000)
Proceeds from Federal Home Loan Bank advances	20,000,000	0	0
Maturities and prepayments of Federal Home Loan Bank advances	(30,000,000)	(20,000,000)	(140,000,000)
Maturities of wholesale repurchase agreements	0	(10,000,000)	(5,000,000)
Net increase (decrease) in other borrowed money	10,000	(370,000)	(86,000)
Repurchase of preferred stock	(21,000,000)	0	0
Repurchase of common stock warrant	(7,465,000)	0	0
Proceeds from stock option exercises, net of cashless exercises	227,000	55,000	0
Employee stock purchase plan	39,000	42,000	47,000
Dividend reinvestment plan	14,000	6,000	2,000
Payment of cash dividends on preferred stock	(496,000)	(1,620,000)	(525,000)
Payment of cash dividends to common shareholders	(774,000)	0	(85,000)
Net cash for financing activities	(24,120,000)	(238,054,000)	(258,818,000)
Net change in cash and cash equivalents	59,631,000	12,174,000	42,463,000
Cash and cash equivalents at beginning of period	76,372,000	64,198,000	21,735,000
Cash and cash equivalents at end of period	136,003,000	76,372,000	64,198,000
Cash paid during the year for:
Interest	13,741,000	21,742,000	33,203,000
Federal income taxes	0	0	0
Noncash financing and investing activities:
Transfers from loans to foreclosed assets	11,761,000	11,495,000	9,399,000
Preferred stock cash dividend accrued	$ 0	$ 134,000	$ 666,000