Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income	$ 8,549,000	$ 6,646,000
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	2,767,000	2,833,000
Accretion of acquired loans	(1,316,000)	(1,416,000)
Provision for loan losses	600,000	(400,000)
Stock-based compensation expense	330,000	212,000
Stock grants to directors for retainer fees	0	123,000
Proceeds from sales of mortgage loans held for sale	19,465,000	23,970,000
Origination of mortgage loans held for sale	(18,150,000)	(25,123,000)
Net gain from sales of mortgage loans held for sale	(543,000)	(703,000)
Gain on trust preferred securities repurchase	(2,970,000)	0
Net gain from sales and valuation write-down of foreclosed assets	(164,000)	(1,000)
Net (gain) loss from sales and write-downs of fixed assets	140,000	(20,000)
Net (gain) loss from sales of available for sale securities	1,000	(5,000)
Earnings on bank owned life insurance	(286,000)	(287,000)
Net change in:
Accrued interest receivable	(366,000)	(713,000)
Other assets	732,000	1,150,000
Accrued interest and other liabilities	1,278,000	1,540,000
Net cash from operating activities	10,067,000	7,806,000
Cash flows from investing activities
Loan originations and payments, net	(18,011,000)	(27,224,000)
Purchases of securities available for sale	(17,873,000)	(1,800,000)
Proceeds from maturities, calls and repayments of securities available for sale	22,337,000	22,371,000
Proceeds from sales of securities available for sale	264,000	665,000
Proceeds from sales of foreclosed assets	574,000	754,000
Net sales (purchases) of premises and equipment	44,000	(288,000)
Net cash for investing activities	(12,665,000)	(5,522,000)
Cash flows from financing activities
Net decrease in time deposits	(24,764,000)	(40,457,000)
Net increase in all other deposits	14,504,000	43,654,000
Net increase (decrease) in securities sold under agreements to repurchase	7,541,000	(19,350,000)
Maturities of Federal Home Loan Bank advances	0	(6,000,000)
Proceeds from Federal Home Loan Bank advances	30,000,000	0
Proceeds from stock option exercises	50,000	132,000
Employee stock purchase plan	8,000	10,000
Dividend reinvestment plan	411,000	140,000
Repurchase of common stock shares	(3,258,000)	(1,984,000)
Repurchase of trust preferred securities	(8,030,000)	0
Payment of cash dividends to common shareholders	(2,574,000)	(2,377,000)
Net cash from (for) financing activities	13,888,000	(26,232,000)
Net change in cash and cash equivalents	11,290,000	(23,948,000)
Cash and cash equivalents at beginning of period	89,891,000	172,738,000
Cash and cash equivalents at end of period	101,181,000	148,790,000
Cash paid during the period for:
Interest	3,063,000	2,903,000
Federal income tax	250,000	950,000
Noncash financing and investing activities:
Transfers from loans to foreclosed assets	$ 595,000	$ 422,000