NOTES PAYABLE - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Amortization of deferred financing costs			$ 1,087	$ 759
Interest paid during the period			24,902	21,750
Secured debt | 2015-1 Notes
Debt Instrument [Line Items]
Interest expense	$ 4,927	$ 2,609	10,964	7,926
Amortization of deferred financing costs	62	63	185	186
Total interest expense and credit facility fees	4,989	2,672	11,149	8,112
Interest paid during the period	$ 5,293	$ 2,637	$ 10,558	$ 8,028