LOANS, Acquired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Credit impaired acquired loans [Abstract]
Outstanding principal balance	$ 13,242	$ 6,354
Carrying amount	10,115	5,553
Credit impaired acquired loans, total balance due	13,400	6,600
Non-impaired acquired loans [Abstract]
Outstanding principal balance	1,658,780	497,308
Carrying amount	1,626,979	489,807
Total acquired loans [Abstract]
Outstanding principal balance	1,672,022	503,662
Carrying amount	1,637,094	495,360
Accretable discount related to acquired loans [Roll forward]
Balance at beginning of year	498	810
Merchants acquisition	793	0
Accretion recognized	(905)	(455)
Net reclassification to accretable from nonaccretable	590	143
Balance at end of year	$ 976	$ 498

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities without evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

No definition available.