COMMITMENTS AND CONTINGENCIES (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 USD ($) loan	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Guarantor Obligations [Line Items]
Provision for losses at the time of sale	$ 8,268,000	$ (67,563,000)	$ 27,239,000	$ (87,723,000)
Allowance for credit losses	141,970,000	132,418,000	141,970,000	132,418,000	$ 136,330,000	$ 94,507,000	$ 204,818,000	$ 228,804,000
Unfunded Lending Commitment
Guarantor Obligations [Line Items]
Provision for losses at the time of sale	(200,000)	$ (800,000)	(100,000)	$ (200,000)
Allowance for credit losses	$ 11,500,000		11,500,000			$ 7,400,000
Secondary Market Loan Sales
Guarantor Obligations [Line Items]
Provision for losses at the time of sale			$ 0
Number of loans repurchased | loan			2	0
Loans repurchase amount			$ 800,000