SUBSEQUENT EVENT (Details) $ in Thousands	May 04, 2020 USD ($) numberOfLoans	Apr. 30, 2020 USD ($) numberOfLoans	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)
Business Acquisition [Line Items]
Total Loans			$ 13,094,106	$ 12,818,476	$ 8,482,339
Subsequent Event | CARES Act, PPP, SBA Loan Program
Business Acquisition [Line Items]
Number of loans | numberOfLoans	7,200
Total Loans	$ 1,100,000
Subsequent Event | CARES Act, PPP, FRB Liquidity Facility
Business Acquisition [Line Items]
Number of loans | numberOfLoans		7,700
Total Loans		$ 2,500,000