DEPOSITS (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Deposit Liabilities Reclassified as Loans Receivable	$ 5,000	$ 3,300
Deposit Liabilities, Collateral Issued, Financial Instruments	323,100	356,800
Time Deposits, Fiscal Year Maturity [Abstract]
1 year or less	1,097,407	511,292
Over 1 year to 2 years	204,690	111,487
Over 2 years to 3 years	55,615	41,523
Over 3 years to 4 years	24,038	27,040
Over 4 years to 5 years	13,565	19,761
Time Deposits	$ 1,395,315	$ 711,103
1 year or less (as percent)	78.60%	71.90%
Over 1 years to 2 years (as percent)	14.70%	15.70%
Over 2 years to 3 years (as percent)	4.00%	5.80%
Over 3 years to 4 years (as percent)	1.70%	3.80%
Over 4 years to 5 years (as percent)	1.00%	2.80%
Time Deposits (as percent)	100.00%	100.00%
Deposits over $250,000.00	$ 244,700	$ 104,900