Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 4,231	$ 3,018
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and accretion of discounts on investment securities, net	1,211	1,056
Depreciation and amortization	210	241
Stock-based compensation	7	8
Provision for loan losses	107	878
Net other-than-temporary impairment losses on investment securities	58	95
Gains on sales of investment securities, net	(995)	(861)
Loans originated for resale	(6,437)	(2,449)
Proceeds from sale of loans held for sale	5,558	2,481
Gains on sale of loans held for sale	(126)	(32)
Decrease (Increase) in accrued interest receivable	255	(622)
Decrease in prepaid FDIC insurance assessments	240	473
Increase in cash surrender value of bank owned life insurance	(251)	(260)
(Increase) decrease in other assets	(647)	349
Increase in other liabilities	1,700	418
Net cash provided by operating activities	5,121	4,793
Cash flows from investing activities:
Investment securities available-for-sale: Purchases	(88,332)	(109,956)
Investment securities available-for-sale: Sales	41,513	76,551
Investment securities available-for-sale: Maturies, calls and principal repayments	8,658	20,867
Investment securities held-to-maturity: Purchases	(4,844)
Investment securities held-to-maturity: Maturities and principal repayments	7,288
Net redemption of restricted investment in bank stocks		450
Net increase in loans	(33,562)	(7,806)
Purchases of premises and equipment	(136)	(35)
Net cash used in investing activities	(69,415)	(19,929)
Cash flows from financing activities:
Net increase in deposits	32,058	74,314
Net decrease in short-term borrowings		(5,938)
Repayments of long-term borrowings		(10,000)
Cash dividends on preferred stock	(166)	(125)
Cash dividends on common stock	(490)	(489)
Issuance cost of common stock	(2)	(1)
Proceeds from exercise of stock options		7
Net cash provided by financing activities	31,400	57,768
Net change in cash and cash equivalents	(32,894)	42,632
Cash and cash equivalents at beginning of period	111,101	37,497
Cash and cash equivalents at end of period	78,207	80,129
Supplemental disclosures of cash flow information:
Cash payments for: Interest paid on deposits and borrowings	3,097	3,006
Supplemental disclosures of non-cash investing activities:
Noncash activities: Trade date accounting settlement for investments, net	$ 1,855	$ 17,892