Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net income	$ 11,472,000	$ 12,275,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,148,000	734,000
Depreciation of bank premises and equipment	596,000	561,000
Intangible assets amortization	218,000	807,000
Amortization of premiums and accretion of discounts, net	70,000	89,000
Loss on disposal of premises and equipment		15,000
Gain on sales and calls of securities available for sale, net	(153,000)	(5,000)
Gain on calls of securities held to maturity, net	(46,000)
Loss and write-down on other real estate owned, net	101,000	398,000
Increase in cash value of bank-owned life insurance	(447,000)	(451,000)
Originations of mortgage loans held for sale	(11,215,000)	(13,500,000)
Proceeds from sale of mortgage loans held for sale	11,609,000	12,654,000
Gain on sale of mortgage loans held for sale	(194,000)	(194,000)
Net change in:
Accrued interest receivable	631,000	89,000
Other assets	(701,000)	345,000
Accrued interest payable	(8,000)	(7,000)
Other liabilities	271,000	1,210,000
Net cash provided by operating activities	13,352,000	15,020,000
Cash Flows from Investing Activities
Net change interest-bearing deposits	50,641,000	12,253,000
Proceeds from calls, principal payments, sales and maturities of securities available for sale	205,110,000	51,620,000
Proceeds from calls, principal payments and maturities of securities held to maturity	13,941,000	6,709,000
Purchases of securities available for sale	(253,341,000)	(40,957,000)
Net change in restricted stock	(41,000)	(40,000)
Purchases of loan participations	(3,115,000)	(402,000)
Collections of loan participations	791,000	1,964,000
Loan originations and principal collections, net	(16,176,000)	(23,473,000)
Proceeds from sale of other real estate owned	876,000	773,000
Recoveries on loans charged off	123,000	122,000
Proceeds from sale and purchases of premises and equipment, net	(333,000)	(580,000)
Net cash (used in) provided by investing activities	(1,524,000)	7,989,000
Cash Flows from Financing Activities
Net change in time deposits	(16,594,000)	(19,575,000)
Net change in other deposits	7,743,000	(323,000)
Cash dividends paid	(3,827,000)	(3,686,000)
Stock options exercised		127,000
Net cash used in financing activities	(12,678,000)	(23,457,000)
Net change in cash and due from banks	(850,000)	(448,000)
Cash and due from banks at beginning of period	12,152,000	12,894,000
Cash and due from banks at end of period	11,302,000	12,446,000
Supplemental Disclosures of Cash Flow Information
Interest paid on deposits and borrowed funds	3,158,000	3,154,000
Income taxes paid	2,780,000	3,380,000
Supplemental Disclosure of Noncash Activities
Loans charged against the allowance for loan losses	1,267,000	1,002,000
Loans transferred to other real estate owned		620,000
Unrealized net gain (loss) on securities available for sale	$ 6,746,000	$ (963,000)