FAIR VALUE MEASUREMENTS - Financial Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs (Details) - Recurring Basis - Asset Backed Securities Issued $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Purchases, sales and repayments
Balance, ending	$ 698,100
Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	511,107
Transfers
Gains (losses) included in net income
Other income	(28,503)
Purchases, sales and repayments
Proceeds from sales	0
Payments	(101,942)
Other	0
Balance, ending	$ 380,662