Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 17,704,000	$ 17,407,000	$ 21,030,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision (credit) for loan losses	4,769,000	(3,566,000)	(6,624,000)
Adjustments to other real estate		63,000	576,000
Deferred tax expense	556,000	2,116,000	9,180,000
Asset depreciation	2,814,000	2,468,000	2,829,000
Securities premium amortization, net of discount accretion	3,724,000	2,658,000	2,624,000
Amortization of intangibles	1,901,000	1,085,000	780,000
Goodwill impairment	0	0	0
Restricted stock amortization expense	769,000	1,139,000	210,000
Net gain on sales/calls of investment securities	(294,000)	(162,000)	(1,884,000)
Net gain on sales of mortgage loans	(2,672,000)	(2,179,000)	(1,549,000)
Net (gain) loss on sales of premises/equipment	99,000	(16,000)	19,000
Net (gain) loss on sales of other real estate	(275,000)	123,000	(200,000)
Net gain from sale of bank branches			(4,378,000)
Bank owned life insurance	(899,000)	(523,000)
Proceeds from sales of held for sale loans	126,459,000	105,648,000	83,258,000
Held for sale loans originated for resale	(120,909,000)	(110,161,000)	(75,887,000)
Net changes in assets and liabilities:
Accrued interest receivable	(427,000)	(254,000)	311,000
Other assets	(5,130,000)	(1,886,000)	(4,152,000)
Excess tax expense from share-based payment arrangements			(2,000)
Accrued interest payable	265,000	57,000	(76,000)
Other liabilities	(1,473,000)	915,000	638,000
Net cash provided by operating activities	26,981,000	14,932,000	26,703,000
Investing activities:
Proceeds from sales of available for sale securities	43,593,000		1,419,000
Held to maturity securities	1,650,000	2,060,000	2,250,000
Available for sale securities	86,691,000	98,904,000	79,282,000
Redemptions of other investments			696,000
Purchases of held to maturity securities	(444,000)	(1,629,000)	(1,725,000)
Purchases of available for sale securities	(159,542,000)	(115,710,000)	(51,344,000)
Purchases of bank owned life insurance		(20,000,000)
Loans originated, net of principal repayments	(104,262,000)	(169,426,000)	(166,971,000)
Cash outflows from sale of bank branches, net			(94,806,000)
Cash received in business combinations, net of cash paid		12,284,000
Purchases of premises and equipment	(2,078,000)	(2,177,000)	(2,096,000)
Proceeds from sales of premises and equipment	176,000	76,000	99,000
Proceeds from sales of other real estate	2,681,000	1,185,000	1,401,000
Net cash used in investing activities	(131,535,000)	(194,433,000)	(231,795,000)
Financing activities:
Net increase in deposits	61,913,000	104,876,000	80,488,000
Net increase (decrease) in other borrowings	72,887,000	24,367,000	(1,253,000)
Net proceeds from issuance of common stock	1,239,000	682,000	385,000
Purchases of treasury stock	(22,721,000)	(8,624,000)	(10,302,000)
Redemption of trust preferred securities	(5,155,000)
Excess tax expense from share-based payment arrangements			2,000
Common stock dividends paid	(6,088,000)	(4,607,000)	(3,131,000)
Net cash provided by financing activities	102,075,000	116,694,000	66,189,000
Net decrease in cash and cash equivalents	(2,479,000)	(62,807,000)	(138,903,000)
Cash and cash equivalents:
Beginning of period	78,129,000	140,936,000	279,839,000
End of period	$ 75,650,000	$ 78,129,000	$ 140,936,000