NET DEFERRED TAX ASSETS AND INCOME TAXES - Components of net deferred tax assets (Details) - Components of net deferred tax assets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets
Allowance for loan losses	$ 1,877	$ 1,373
Interest on non-performing loans	343	236
Accrued deferred compensation	153	301
Post-retirement benefits	$ 17	17
Other real estate owned write-down		72
Restricted stock awards	$ 147	111
Mark-to-market purchase accounting adjustments	1,109	2,180
Write-down of securities	$ 1,497	1,497
Alternative minimum tax		540
Other	$ 22	10
Gross deferred tax assets	5,165	6,337
Deferred tax liabilities
Deferred loan costs, net	(436)	(538)
Goodwill and core deposit intangible asset	(853)	(821)
Accelerated depreciation	(1,130)	(1,209)
Mortgage servicing rights	(177)	(255)
Net unrealized holding gain on available-for-sale securities	(580)	(1,086)
Gross deferred tax liabilities	(3,176)	(3,909)
Net deferred tax asset	$ 1,989	$ 2,428