Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income	$ 7,615,000	$ 8,549,000
Depreciation and amortization	2,548,000	2,767,000
Accretion of acquired loans	(832,000)	(1,316,000)
Provision for loan losses	600,000	600,000
Stock-based compensation expense	476,000	330,000
Stock grants to directors for retainer fees	2,000	0
Proceeds from sales of mortgage loans held for sale	19,317,000	19,465,000
Origination of mortgage loans held for sale	(19,342,000)	(18,150,000)
Net gain from sales of mortgage loans held for sale	(867,000)	(543,000)
Gain on trust preferred securities repurchase	0	(2,970,000)
Net gain from sales and valuation write-downs of foreclosed assets	(43,000)	(125,000)
Net (gain) loss from sales and valuation write-downs of former bank premises	15,000	(39,000)
Net loss from sales and write-downs of fixed assets	40,000	140,000
Net loss from sales of available for sale securities	0	1,000
Earnings on bank owned life insurance	(1,738,000)	(286,000)
Accrued interest receivable	(828,000)	(366,000)
Other assets	(321,000)	732,000
Accrued interest and other liabilities	980,000	1,278,000
Net cash from operating activities	7,622,000	10,067,000
Loan originations and payments, net	(61,352,000)	(18,011,000)
Purchases of securities available for sale	(14,701,000)	(17,873,000)
Proceeds from maturities, calls and repayments of securities available for sale	10,858,000	22,337,000
Proceeds from sales of securities available for sale	0	264,000
Purchases of Federal Home Loan Bank stock	(1,210,000)	0
Proceeds from sales of foreclosed assets	99,000	529,000
Proceeds from sales of former bank premises	0	45,000
Proceeds from bank owned life insurance cash value release and death benefits	2,720,000	0
Net sales (purchases) of premises and equipment	(1,138,000)	44,000
Net cash for investing activities	(64,724,000)	(12,665,000)
Net decrease in time deposits	(55,203,000)	(24,764,000)
Net increase (decrease) in all other deposits	(41,766,000)	14,504,000
Net increase (decrease) in securities sold under agreements to repurchase	(5,031,000)	7,541,000
Maturities of Federal Home Loan Bank advances	(10,000,000)	0
Proceeds from Federal Home Loan Bank advances	40,000,000	30,000,000
Proceeds from stock option exercises	248,000	50,000
Employee stock purchase plan	12,000	8,000
Dividend reinvestment plan	1,145,000	411,000
Repurchase of common stock shares	0	(3,258,000)
Repurchase of trust preferred securities	0	(8,030,000)
Payment of cash dividends to common shareholders	(2,923,000)	(2,574,000)
Net cash from (for) financing activities	(73,518,000)	13,888,000
Net change in cash and cash equivalents	(130,620,000)	11,290,000
Cash and cash equivalents at beginning of period	183,596,000	89,891,000
Cash and cash equivalents at end of period	52,976,000	101,181,000
Supplemental disclosures of cash flows information
Interest	3,322,000	3,063,000
Federal income tax	0	250,000
Noncash financing and investing activities:
Transfers from loans to foreclosed assets	97,000	224,000
Transfers from bank premises to other real estate owned	$ 0	$ 371,000