CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 12,482,000	$ 11,474,000	$ 9,869,000
Adjustments to reconcile net income to net cash flows from operating activities-
Depreciation, amortization and accretion	2,557,000	2,997,000	2,991,000
Provision for loan losses	913,000	1,366,000	930,000
Deferred income tax provision (benefit)	928,000	(58,000)	192,000
Increase in cash surrender value of bank owned life insurance	(746,000)	(625,000)	(671,000)
Realized gain on sales of securities available-for-sale	(1,082,000)	(495,000)	(149,000)
Realized loss (gain) on sale of premises and equipment	33,000	(1,000)	(128,000)
Realized loss from sale and write-downs of other real estate owned and repossessed assets	534,000	378,000	85,000
Origination of mortgage loans for sale	(11,217,000)	(7,725,000)	(7,480,000)
Realized gains from sales of loans	(244,000)	(343,000)	(147,000)
Proceeds from sales of loans	11,353,000	7,809,000	7,552,000
Penalty for prepayment of long-term debt	251,000	0	0
Compensation expense related to stock options	5,000	19,000	24,000
Compensation expense related to restricted stock	90,000	90,000	0
Changes in:
Income receivable	(216,000)	(160,000)	414,000
Other assets	(791,000)	(3,302,000)	1,898,000
Other liabilities	634,000	1,815,000	560,000
TOTAL ADJUSTMENTS	3,002,000	1,765,000	6,071,000
NET CASH FLOWS FROM OPERATING ACTIVITIES	15,484,000	13,239,000	15,940,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of investment securities available-for-sale	92,455,000	97,981,000	67,296,000
Proceeds from maturities and calls of investment securities:
Available-for-sale	84,529,000	29,700,000	36,716,000
Held-to-maturity	6,640,000	3,515,000	4,688,000
Purchases of investment securities:
Available-for-sale	(124,934,000)	(163,859,000)	(92,180,000)
Held-to-maturity	(25,010,000)	(3,413,000)	(11,090,000)
Proceeds from redemption of Federal Reserve Bank stock	0	0	41,000
Purchase of Federal Reserve Bank stock	0	(256,000)	(743,000)
Proceeds from sale of impaired loans	0	4,559,000	0
Net increase in loans	(48,153,000)	(42,530,000)	(10,081,000)
Purchase of bank owned life insurance	(4,000,000)	0	0
Proceeds from redemption of bank owned life insurance	0	0	3,633,000
Proceeds from sales of other real estate owned and repossessed assets	526,000	245,000	750,000
Additions to other real estate owned	(182,000)	(20,000)	(45,000)
Purchases of premises and equipment	(9,450,000)	(504,000)	(1,052,000)
Proceeds from sales of premises and equipment	63,000	22,000	179,000
Net cash acquired from (paid for) acquisition	0	8,993,000	(9,114,000)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(27,516,000)	(65,567,000)	(11,002,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in deposits	23,745,000	41,822,000	(4,797,000)
Net increase in short-term borrowings	4,653,000	20,742,000	7,339,000
Principal payments on long-term debt	(5,349,000)	(5,410,000)	(745,000)
Penalty for prepayment of long-term debt	(251,000)	0	0
Proceeds from issuance of common stock	52,000	66,000	58,000
Repurchase of stock warrants	(1,545,000)	0	0
Proceeds from exercise of stock options	592,000	152,000	0
Excess tax benefit from exercise of stock options and vesting of restricted common stock	61,000	13,000	0
Cash dividends paid on common stock	(6,048,000)	(5,915,000)	(5,636,000)
NET CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES	15,910,000	51,470,000	(3,781,000)
NET CHANGE IN CASH AND CASH EQUIVALENTS	3,878,000	(858,000)	1,157,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	14,987,000	15,845,000	14,688,000
CASH AND CASH EQUIVALENTS AT END OF YEAR	18,865,000	14,987,000	15,845,000
CASH PAID DURING THE YEAR FOR:
Interest	3,542,000	3,396,000	3,502,000
Income taxes	4,420,000	4,820,000	2,610,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING ACTIVITY:
Transfer from loans to other real estate owned and repossessed assets	$ 32,000	$ 79,000	$ 435,000