Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net income	$ 8,177	$ 6,768
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	350	2,325
Depreciation, amortization and accretion, net	1,688	1,465
Deferred income tax provision (benefit)	701	(1,152)
Gain on sales of mortgage loans held for sale	(341)	(867)
Origination of mortgage loans held for sale	(17,617)	(47,036)
Proceeds from sale of mortgage loans held for sale	16,242	57,374
Bank owned life insurance income	(236)	(252)
Gain on the disposal of premises and equipment	(30)
Gain on the sale of other real estate	(343)	(35)
Stock compensation expense	290	531
Excess tax benefits from share-based compensation arrangements	(149)	(18)
Decrease in accrued interest receivable and other assets	514	1,430
(Decrease) increase in accrued interest payable and other liabilities	(2,090)	1,716
Net cash provided by operating activities	7,156	22,249
Investing activities:
Purchases of securities available for sale	(69,855)	(106,748)
Proceeds from maturities of securities available for sale	123,072	129,192
Net increase in loans	(8,687)	(18,649)
Purchases of premises and equipment	(509)	(350)
Proceeds from disposal of equipment	344
Proceeds from sale of other real estate	3,962	1,778
Net cash provided by investing activities	48,327	5,223
Financing activities:
Net increase (decrease) in deposits	6,450	(44,809)
Net (decrease) increase in securities sold under agreements to repurchase and federal funds purchased	(46,726)	12,103
Proceeds from Federal Home Loan Bank advances	10,000
Repayments of Federal Home Loan Bank advances	(10,041)	(10)
Issuance of common stock for options and dividend reinvestment plan	463	61
Excess tax benefits from share-based compensation arrangements	149	18
Common stock repurchases	(519)	(286)
Cash dividends paid	(3,075)	(2,792)
Net cash used in financing activities	(43,299)	(35,715)
Net increase (decrease) in cash and cash equivalents	12,184	(8,243)
Cash and cash equivalents at beginning of period	70,770	67,703
Cash and cash equivalents at end of period	82,954	59,460
Supplemental cash flow information:
Income tax payments		400
Cash paid for interest	1,379	2,398
Supplemental non-cash activity:
Transfers from loans to other real estate owned	$ 1,137	$ 99