INCOME TAXES - Deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets [Abstract]
Allowance for loan and lease losses	$ 2,699	$ 3,544
Net operating loss carryforward	22,546	23,801
Security writedowns	1,020	1,855
OREO writedowns	139	465
Investment in partnerships	1,698	2,046
Pension obligations	5,108	5,249
Unrealized losses on debt securities	165
Share-based compensation cost	83	77
Non-accrual interest	366	287
Capital loss carryover	1,618	1,739
Charitable contribution carryovers	24	16
Employee bonuses	184	91
Accrued liabilities	181	163
Alternative minimum tax credit carryforward	302	282
Derivative Instruments	189
Other	311	100
Deferred tax assets before valuation allowance	36,633	39,715
Deferred Tax Assets, Net of Valuation Allowance	6,060	578
Deferred tax liabilities [Abstract]
Penalties on delinquent tax certificates	35	72
Unrealized gains on AFS debt securities		308
Unrealized gains on AFS equity securities	151	434
Prepaid deductions	43	17
Other	114	55
Total deferred tax liabilities	343	886
Less valuation allowance	(30,573)	(39,137)
Net deferred tax assets, included in other assets	$ 5,717
Net deferred tax (liability) asset, included in other assets		$ (308)