REDEEMABLE PREFERRED STOCK - Issuances, Reclassifications and Redemptions for each class of Preferred Stock in Permanent Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 278,114	$ 278,195
Issuance of Series D Preferred Stock	76,921	2,359
Reclassification of Series A Preferred Stock to permanent equity	45,806	35,483
Ending balance	$ 373,549	$ 278,114
Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	9,784,067	8,224,254
Beginning balance	$ 262,036	$ 223,467
Issuance of Series D Preferred Stock (in shares)	37,712	19,145
Issuance of Series D Preferred Stock	$ 923	$ 473
Reclassification of Series A preferred Stock to permanent equity (in shares)	2,006,456	1,570,421
Reclassification of Series A Preferred Stock to permanent equity	$ 50,508	$ 38,837
Redemption of Series A Preferred Stock (in shares)	(112,881)	(29,753)
Redemption of Series A Preferred Stock	$ (2,806)	$ (741)
Ending balance (in shares)	11,715,354	9,784,067
Ending balance	$ 310,661	$ 262,036
Series A Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of Series A Preferred Stock to permanent equity	146,200
Redemption of Series A Preferred Stock	$ (2,700)	$ (749)
Series A Preferred Stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	4,377,762	2,837,094
Beginning balance	$ 108,729	$ 70,633
Reclassification of Series A preferred Stock to permanent equity (in shares)	2,006,456	1,570,421
Reclassification of Series A Preferred Stock to permanent equity	$ 50,508	$ 38,837
Redemption of Series A Preferred Stock (in shares)	(112,881)	(29,753)
Redemption of Series A Preferred Stock	$ (2,806)	$ (741)
Ending balance (in shares)	6,271,337	4,377,762
Ending balance	$ 156,431	$ 108,729
Series D Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series D Preferred Stock	$ 893	$ 456
Series D Preferred Stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	19,145
Beginning balance	$ 473
Issuance of Series D Preferred Stock (in shares)	37,712	19,145
Issuance of Series D Preferred Stock	$ 923	$ 473
Ending balance (in shares)	56,857	19,145
Ending balance	$ 1,396	$ 473
Series L Preferred Stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	5,387,160	5,387,160
Beginning balance	$ 152,834	$ 152,834
Ending balance (in shares)	5,387,160	5,387,160
Ending balance	$ 152,834	$ 152,834