INCOME TAXES (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) Partnership	Dec. 31, 2014 USD ($) Partnership	Dec. 31, 2013 USD ($)
Provision for income taxes [Abstract]
Currently payable									$ 2,913,000	$ 3,081,000	$ 3,082,000
Deferred taxes									(192,000)	478,000	670,000
Provision for income taxes	$ 521,000	$ 681,000	$ 779,000	$ 740,000	$ 904,000	$ 913,000	$ 890,000	$ 852,000	2,721,000	3,559,000	3,752,000
Deferred tax assets [Abstract]
Allowance for loan losses	4,238,000				2,317,000				4,238,000	2,317,000
Deferred compensation	772,000				503,000				772,000	503,000
Merger & acquisition costs	20,000				24,000				20,000	24,000
Allowance for losses on available-for-sale securities	436,000				420,000				436,000	420,000
Pensions and other retirement obligation	1,483,000				658,000				1,483,000	658,000
Interest on non-accrual loans	1,001,000				825,000				1,001,000	825,000
Incentive plan accruals	362,000				352,000				362,000	352,000
Other real estate owned expenses	136,000				24,000				136,000	24,000
Low income housing tax credits	63,000				33,000				63,000	33,000
NOL carry forward	950,000				0				950,000	0
AMT Credit Carryforward	152,000				0				152,000	0
Other	157,000				78,000				157,000	78,000
Total	9,770,000				5,234,000				9,770,000	5,234,000
Deferred tax liabilities [Abstract]
Premises and equipment	(919,000)				(306,000)				(919,000)	(306,000)
Investment securities accretion	(177,000)				(302,000)				(177,000)	(302,000)
Loan fees and costs	(154,000)				(166,000)				(154,000)	(166,000)
Goodwill and core deposit intangibles	(3,594,000)				(2,734,000)				(3,594,000)	(2,734,000)
Mortgage servicing rights	(238,000)				(161,000)				(238,000)	(161,000)
Unrealized gains on available-for-sale securities	(1,135,000)				(1,594,000)				(1,135,000)	(1,594,000)
Other	(44,000)				0				(44,000)	0
Total	(6,261,000)				(5,263,000)				(6,261,000)	(5,263,000)
Deferred tax asset, net	3,509,000								3,509,000
Deferred tax liability, net					(29,000)					(29,000)
Valuation allowance	0				0				0	0
Total provision for income taxes reconciliation [Abstract]
Provision at statutory rates on pre-tax income									4,878,000	5,761,000	5,823,000
Effect of tax-exempt income									(1,915,000)	(1,865,000)	(1,752,000)
Low income housing tax credits									(198,000)	(198,000)	(198,000)
Bank owned life insurance									(214,000)	(172,000)	(171,000)
Nondeductible interest									61,000	60,000	70,000
Nondeductible merger and acquisition expenses									102,000	0	0
Other items									7,000	(27,000)	(20,000)
Provision for income taxes	521,000	$ 681,000	$ 779,000	$ 740,000	904,000	$ 913,000	$ 890,000	$ 852,000	$ 2,721,000	$ 3,559,000	$ 3,752,000
Statutory tax rates									34.00%	34.00%	34.00%
Effective tax rates									19.00%	21.00%	21.90%
Minimum percentages of tax position liable to be realized upon ultimate settlement									50.00%
Liability for uncertain tax positions	0				0				$ 0	$ 0
Unrecognized tax benefits	0				0				$ 0	$ 0
Number of investments in Partnerships | Partnership									4	4
Investment amount in partnerships	959,000				$ 1,218,000				$ 959,000	$ 1,218,000
Tax Credit Carryforward [Line Items]
Investment tax credits	$ 1,044,000								1,044,000
Amortization of investments in qualified affordable housing projects									$ 259,000
Investment Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credits recognition period									7 years
Tax credits recognized as reduction of tax expense amount									$ 198,000