Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 13,967	$ 14,761
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,786	1,678
Deferred income tax (benefit) expense	(496)	1,877
Provision (Credit) for loan losses	561	(2,011)
Net investment securities (gains) losses	(413)	1,005
Net amortization of premiums on investment securities	3,428	3,059
Earnings from CSV of bank-owned life insurance	(1,019)	(924)
Stock-based compensation expense	350	350
Prepayment fees on Federal Home Loan Bank advances		955
Loss on disposal of premises and equipment	5	3
Loss (gain) on the sale of other real estate	24	(116)
Provision for other real estate valuation allowance	84	14
Gain on sales of loans	(6,156)	(5,319)
Real estate loans originated for sale	(180,985)	(181,560)
Proceeds from sales of real estate loans	193,678	172,906
Decrease (increase) in accrued interest receivable	839	(385)
Decrease (increase) in other assets	1,168	(1,338)
Increase in accrued interest payable and other liabilities	479	1,019
Net cash provided by operating activities	27,300	5,974
Cash flows from investing activities:
Proceeds from sales of available-for-sale securities	95,718	110,635
Proceeds from maturities and calls of available-for-sale securities	108,812	74,508
Purchase of available-for-sale securities	(164,381)	(238,725)
Proceeds from redemption of FHLB stock		500
Purchase of FHLB stock	(309)	(463)
Net (increase) decrease in loans	(28,505)	2,407
Purchase of bank-owned life insurance		(5,000)
Additions to premises and equipment	(327)	(1,636)
Proceeds from sale of other real estate	279	1,068
Proceeds from sale of premises and equipment		137
Net cash provided by (used in) investing activities	11,287	(56,569)
Cash flows from financing activities:
Net increase in deposits	25,256	77,116
Net decrease in securities sold under repurchase agreements	(15,134)	(10,045)
Payments of Federal Home Loan Bank advances		(8,955)
Advances from Federal Home Loan Bank	5,000	10,000
Purchase of treasury stock	(139)	(11)
Payment of cash dividends	(3,245)	(3,035)
Proceeds from stock options exercised	1,999
Tax benefit from stock-based compensation	102	46
Proceeds from directors' stock purchase plan	49	45
Net cash provided by financing activities	13,888	65,161
Net increase in cash and cash equivalents	52,475	14,566
Cash and cash equivalents at beginning of period	42,917	35,995
Cash and cash equivalents at end of period	95,392	50,561
Supplemental disclosures of cash paid during the period for:
Interest	6,086	6,443
Income taxes	6,040	5,181
Supplemental information on noncash investing activities:
Loans transferred to other real estate owned	$ 303	611
Loans provided for sales of other real estate owned		$ 392