LOANS, Acquired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Credit impaired acquired loans [Abstract]
Outstanding principal balance	$ 8,339	$ 5,957
Carrying amount	7,299	5,312
Credit impaired acquired loans, total balance due	8,500	6,100
Non-impaired acquired loans [Abstract]
Outstanding principal balance	620,942	276,584
Carrying amount	610,355	267,496
Total acquired loans [Abstract]
Outstanding principal balance	629,281	282,541
Carrying amount	617,654	272,808
Accretable discount related to acquired loans [Roll forward]
Balance at beginning of year	705	997
Oneida acquisition	341	0
Accretion recognized	(552)	(707)
Net reclassification to accretable from nonaccretable	316	415
Balance at end of year	$ 810	$ 705