Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flows from Operating Activities
Net income	$ 12,149	$ 2,738	$ 6,932
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,543	4,798	5,359
Net premium amortization of available for sale investment securities	5,312	3,916	2,232
Provision for loan losses	2,772	13,487	17,233
Deferred income tax benefit	(1,043)	(2,227)	(3,392)
Noncash employee stock purchase plan expense	36	42	46
Mortgage loans originated for sale	(84,496)	(41,128)	(50,084)
Proceeds from sale of mortgage loans	86,563	41,981	50,761
Gains on sale of mortgage loans, net	(1,918)	(982)	(1,244)
Loss (gain) on disposal and write downs of premises and equipment, net	257	3	(30)
Net loss on sale and write downs of other real estate	4,084	5,945	4,878
Net gain on sale of available for sale investment securities	(1,209)	(1,355)	(8,889)
Decrease in accrued interest receivable	545	639	2,123
Increase in cash surrender value of company-owned life insurance	(961)	(918)	(1,044)
Death benefits in excess of cash surrender value on company-owned life insurance	(529)		(241)
Decrease in other assets	1,296	372	5,054
Decrease in accrued interest payable	(1,005)	(1,436)	(1,874)
Increase in other liabilities	2,014	2,187	320
Net cash provided by operating activities	28,410	28,062	28,140
Proceeds from maturities and calls of investment securities:
Available for sale	219,141	191,345	315,480
Held to maturity	55	55	45
Proceeds from sale of available for sale investment securities	135,193	201,093	311,243
Purchases of available for sale investment securities	(333,116)	(538,370)	(522,774)
Purchase of restricted stock investments			(368)
Principal collected on loans originated for investment, net	29,818	83,463	56,422
Proceeds from surrender of company-owned life insurance		2,248	8,567
Proceeds from death benefits of company-owned life insurance	1,051		446
Purchases of premises and equipment	(1,675)	(2,679)	(4,298)
Proceeds from sale of other real estate	12,278	9,834	7,227
Proceeds from disposals of equipment	429	5	60
Net cash provided by (used in) investing activities	63,174	(53,006)	172,050
Cash Flows from Financing Activities
Net decrease in deposits	(24,255)	(28,507)	(169,861)
Net (decrease) increase in federal funds purchased and other short-term borrowings	(2,939)	(20,387)	194
Repayments of securities sold under agreements to repurchase and other long-term borrowings	(61,397)	(12,545)	(64,723)
Dividends paid, common and preferred stock	(1,500)	(1,500)	(2,237)
Repurchase of common stock warrant	(75)
Shares issued under employee stock purchase plan	128	136	157
Net cash used in financing activities	(90,038)	(62,803)	(236,470)
Net increase (decrease) in cash and cash equivalents	1,546	(87,747)	(36,280)
Cash and cash equivalents at beginning of year	94,309	182,056	218,336
Cash and cash equivalents at end of year	95,855	94,309	182,056
Cash paid during the year for:
Interest	19,263	26,106	36,822
Income taxes	3,800	2,900	2,989
Sale and financing of other real estate	3,358	3,195	6,337
From Loans [Member]
Cash paid during the year for:
Transfers to other real estate	33,913	26,586	17,771
From Premises [Member]
Cash paid during the year for:
Transfers to other real estate	$ 212