Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 14,722	$ 14,025	$ 11,372
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,193	2,647	3,101
Depreciation, amortization and accretion, net	4,661	5,403	5,398
Stock-based compensation expense	339	227	144
Gains on investment securities, net	(2,293)	(934)	(486)
Other-than-temporary impairment (recoveries) losses recognized in earnings	0	(127)	886
Losses on sales of other real property owned, net	32	268	853
Loss on write down of fixed assets	36	33	2
Gains on sale of loans held for sale, net	(918)	(1,401)	(782)
Deferred income taxes	971	230	(670)
(Increase) decrease in accrued interest receivable	161	277	(662)
Decrease in accrued interest payable	(64)	(169)	(191)
Origination of loans held for sale	(65,172)	(99,923)	(61,375)
Proceeds from sale of loans held for sale	65,788	102,158	61,225
Decrease (increase) in other assets	3,805	(912)	(1,900)
Increase (decrease) in other liabilities	401	1,087	2,061
Net cash provided by operating activities	24,662	22,889	18,976
Cash flows from investing activities:
Proceeds from maturities of certificates of deposit investments	6,665	12,982	10,000
Purchases of certificates of deposit investments	0	(6,416)	(13,231)
Proceeds from sales of securities available-for-sale	69,665	30,500	18,891
Proceeds from maturities of securities available-for-sale	134,300	235,013	184,564
Proceeds from maturities of securities held-to-maturity	0	51	0
Purchases of securities available-for-sale	(204,766)	(293,654)	(333,222)
Net increase in loans	(73,203)	(54,539)	(56,935)
Purchases of premises and equipment	(1,397)	(1,486)	(4,625)
Proceeds from sales of other real property owned	1,590	3,873	3,110
Net cash used in investing activities	(67,146)	(73,676)	(191,448)
Cash flows from financing activities:
Net increase (decrease) in deposits	13,551	103,331	(41,976)
Increase (decrease) in repurchase agreements	5,703	(18,896)	38,323
Proceeds from Federal Home Loan Bank Advances	36,000
Repayment of FHLB advances	(21,000)	(14,750)	(3,000)
Proceeds from short-term debt	0	0	8,250
Repayment of short-term debt	0	(8,250)	0
Proceeds from issuance of common stock	1,303	1,255	406
Proceeds from issuance of preferred stock	0	8,250	19,150
Purchase of treasury stock	(4,619)	(3,912)	(2,385)
Dividends paid on preferred stock	(4,050)	(3,788)	(2,990)
Dividends paid on common stock	(2,014)	(2,843)	(1,697)
Net cash provided by financing activities	24,874	60,397	14,081
Increase (decrease) in cash and cash equivalents	(17,610)	9,610	(158,391)
Cash and cash equivalents at beginning of period	82,712	73,102	231,493
Cash and cash equivalents at end of period	65,102	82,712	73,102
Cash paid during the period for:
Interest	3,599	6,326	8,695
Income taxes	7,657	8,203	5,470
Supplemental disclosures of noncash investing and financing activities
Loans transferred to other real estate owned	(1,046)	(723)	(2,622)
Dividends reinvested in common stock	1,066	1,244	807
Net tax benefit related to option and deferred compensation plans	$ 117	$ 123	$ 31