INCOME TAXES (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Provision for income taxes [Abstract]
Currently payable	$ 4,389,000	$ 3,512,000	$ 3,426,000
Deferred tax liability (asset)	(58,000)	98,000	(270,000)
Provision for income taxes	4,331,000	3,610,000	3,156,000
Deferred tax assets [Abstract]
Allowance for loan losses	2,307,000	2,206,000
Deferred compensation	544,000	563,000
Allowance for losses on available-for-sale securities	784,000	789,000
Pensions and other retirement obligation	733,000	586,000
Unrealized loss on interest rate swap	68,000	118,000
Interest on non-accrual loans	720,000	572,000
Incentive plan accruals	323,000	84,000
Other	214,000	140,000
Total	5,693,000	5,058,000
Deferred tax liabilities [Abstract]
Premises and equipment	(358,000)	(343,000)
Investment securities accretion	(302,000)	(354,000)
Loan fees and costs	(110,000)	(80,000)
Goodwill and core deposit intangibles	(2,126,000)	(1,828,000)
Low income housing tax credits	(20,000)	(36,000)
Mortgage servicing rights	(167,000)	(103,000)
Unrealized gains on available-for-sale securities	(3,480,000)	(3,406,000)
Total	(6,563,000)	(6,150,000)
Deferred tax liability, net	(870,000)	(1,092,000)
Valuation allowance	0	0
Total provision for income taxes reconciliation [Abstract]
Provision at statutory rates on pre-tax income	6,306,000	5,590,000	4,977,000
Effect of tax-exempt income	(1,853,000)	(1,844,000)	(1,607,000)
Low income housing tax credits	(57,000)	(96,000)	(164,000)
Bank owned life insurance	(172,000)	(169,000)	(171,000)
Nondeductible interest	87,000	107,000	113,000
Other items	20,000	22,000	8,000
Provision for income taxes	4,331,000	3,610,000	3,156,000
Statutory tax rates (in hundredths)	34.00%	34.00%	34.00%
Effective tax rates (in hundredths)	23.40%	22.00%	21.50%
Minimum percentages of tax position liable to be realized upon ultimate settlement (in hundredths)	50.00%
Income Tax Uncertainties [Abstract]
Liability for uncertain tax positions	0	0
Unrecognized tax benefits	$ 0	$ 0