COMMITMENTS AND CONTINGENT LIABILITIES - Allowance for Unfunded Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Balance at beginning of period	$ 199,422	$ 38,189	$ 28,819
Addition due to acquisition	952
Provision for loan losses	(35,081)	125,488	19,758
Balance at end of period	167,582	199,422	38,189
Unfunded Loan Commitment
Loss Contingencies [Line Items]
Balance at beginning of period	32,853	1,077	0
Addition due to acquisition	0	0	1,077
Provision for loan losses	332	19,062	0
Balance at end of period	33,185	32,853	1,077
Unfunded Loan Commitment | Cumulative Effect, Period of Adoption, Adjustment
Loss Contingencies [Line Items]
Balance at beginning of period	$ 0	12,714	0
Balance at end of period		$ 0	$ 12,714