CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities
Net income	$ 12,995	$ 13,409
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,840	2,089
Depreciation and amortization	2,139	1,754
Stock-based compensation expense	172	343
Increase in interest receivable	(99)	(188)
Amortization of intangible assets	289	289
Net decrease in trading assets	60	34
Net investment securities gains	(901)	(20)
Other-than-temporary impairment of securities	29	27
Increase in other real estate owned valuation allowance and loss on disposition	247	106
Originations of mortgage loans held for sale	(12,775)	(5,764)
Proceeds from the sale of mortgage loans	19,104	9,429
(Gain) loss on sale of mortgage loans	(268)	8
Decrease in prepaid FDIC assessment	575	802
Decrease (increase) in other assets	1,034	(3,565)
Increase in other liabilities	1,099	1,109
Net cash provided by operating activities	25,540	19,862
Investing Activities
Proceeds from maturities of securities held to maturity		251
Proceeds from sales and maturities of securities available for sale	110,644	78,982
Purchase of securities available for sale	(196,419)	(79,880)
Net increase in loans	(25,585)	(29,055)
Proceeds from sale of FHLB stock	928
Proceeds from the sale of other real estate owned	627	318
Proceeds from bank-owned life insurance		370
Proceeds from previously charged-off loans	384	630
Purchase of premises and equipment	(968)	(476)
Net cash used by investing activities	(110,389)	(28,860)
Financing Activities
Net increase in deposits	10,496	29,742
Proceeds from Federal Home Loan Bank long-term advances		160,000
Repayments on Federal Home Loan Bank long-term advances	(243)	(217,176)
Net change in short-term Federal Home Loan Bank borrowings	125,000	(23,500)
Net (decrease) increase in other borrowed funds	(43,068)	62,605
Common stock repurchase	(2,097)	(272)
Exercise of stock options and issuance of restricted stock, net of repurchase for tax withholdings and tax benefit	(240)	104
Cash dividends paid on common stock	(3,846)	(3,839)
Net cash provided by financing activities	86,002	7,674
Net increase (decrease) in cash and cash equivalents	1,153	(1,324)
Cash and cash equivalents at beginning of year	39,325	31,009
Cash and cash equivalents at end of period	40,478	29,685
Supplemental information
Interest paid	9,190	12,646
Income taxes paid	3,322	4,820
Transfer from loans to other real estate owned	$ 889	$ 1,034