Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 9,847	$ 8,584
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and accretion of discounts on investment securities, net	1,841	2,339
Depreciation and amortization	429	421
Stock-based compensation	25	15
Net other-than-temporary impairment losses on investment securities	24	198
Gains on sales of investment securities, net	(943)	(1,648)
Net loss on sale of other real estate owned	75	0
Loans originated for resale	(12,351)	(10,833)
Proceeds from sale of loans held for sale	13,486	11,587
Gains on sale of loans held for sale	(229)	(226)
Increase in accrued interest receivable	(1)	(246)
Decrease in prepaid FDIC insurance assessments	811	534
Increase in cash surrender value of bank-owned life insurance	(548)	(497)
Life insurance death benefit	(291)	0
Increase in other assets	(3,215)	(2,533)
Increase in other liabilities	1,185	923
Net cash provided by operating activities	10,145	8,618
Cash flows from investing activities:
Investment securities available-for-sale: Purchases	(119,749)	(134,679)
Investment securities available-for-sale: Sales	78,911	71,162
Investment securities available-for-sale: Maturities, calls and principal repayments	29,583	18,184
Investment securities held-to-maturity: Purchases	(6,104)	(5,866)
Investment securities held-to-maturity: Maturities and principal repayments	2,803	16,325
Net (purchases) redemption of restricted investment in bank stocks	(22)	94
Net increase in loans	(13,421)	(51,353)
Purchases of premises and equipment	(304)	(288)
Proceeds from bank-owned life insurance death benefits	592	0
Proceeds from sale of other real estate owned	1,230	105
Net cash used in investing activities	(26,481)	(86,316)
Cash flows from financing activities:
Net (decrease) increase in deposits	(26,028)	53,234
Net decrease in short-term borrowings	0	107
Cash dividends on preferred stock	(84)	(225)
Cash dividends on common stock	(1,978)	(980)
Issuance of restricted stock awards	243	0
Issuance cost of common stock	(6)	(3)
Proceeds from exercise of stock options	10	132
Net cash (used in) provided by financing activities	(27,843)	52,265
Net change in cash and cash equivalents	(44,179)	(25,433)
Cash and cash equivalents at beginning of period	106,138	111,101
Cash and cash equivalents at end of period	61,959	85,668
Supplemental disclosures of cashflowinformation:
Cash payments for: Interest paid on deposits and borrowings	5,548	6,080
Cash payments for: Income taxes	1,630	3,885
Supplemental disclosures of non-cash investing activities:
Trade date accounting settlements for investments, net	0	1,545
Transfer of loans to other real estate owned	236	0
Transfer from investment securities available-for-sale to investment securities held-to-maturity	$ 75,694	$ 0