REDEEMABLE PREFERRED STOCK - Issuances, Reclassifications and Redemptions for each class of Preferred Stock in Permanent Equity (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		69 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 377,460	$ 373,549	$ 278,515	$ 278,114	$ 373,549	$ 278,114
Issuance of Series D Preferred Stock			76,943
Reclassification of Series A Preferred Stock to permanent equity					17,335	20,724	$ 163,600
Ending balance	$ 387,006	$ 377,460	$ 364,526	$ 278,515	$ 387,006	$ 364,526	$ 387,006
Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	11,995,934	11,715,354	10,125,641	9,784,067	11,715,354	9,784,067
Beginning balance	$ 317,737	$ 310,661	$ 270,546	$ 262,036	$ 310,661	$ 262,036
Ending balance (in shares)	12,530,231	11,995,934	10,671,562	10,125,641	12,530,231	10,671,562	12,530,231
Ending balance	$ 331,176	$ 317,737	$ 284,193	$ 270,546	$ 331,176	$ 284,193	$ 331,176
Series A1 Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series D Preferred Stock	$ 4,354
Series A1 Preferred Stock | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	0
Beginning balance	$ 0
Issuance of Series D Preferred Stock (in shares)	192,440
Issuance of Series D Preferred Stock	$ 4,770
Ending balance (in shares)	192,440	0			192,440		192,440
Ending balance	$ 4,770	$ 0			$ 4,770		$ 4,770
Series A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of Series A Preferred Stock to permanent equity	9,668	7,667	12,481	8,243
Redemption of Series A Preferred Stock	$ (2,093)	$ (1,195)	$ (431)	$ (685)
Series A | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	6,551,917	6,271,337	4,715,291	4,377,762	6,271,337	4,377,762
Beginning balance	$ 163,507	$ 156,431	$ 117,140	$ 108,729	$ 156,431	$ 108,729
Reclassification of Series A Preferred Stock to permanent equity (in shares)	430,082	329,921	556,587	366,991
Reclassification of Series A Preferred Stock to permanent equity	$ 10,857	$ 8,304	$ 13,915	$ 9,144
Redemption of Series A Preferred Stock (in shares)	(88,225)	(49,341)	(18,501)	(29,462)
Redemption of Series A Preferred Stock	$ (2,188)	$ (1,228)	$ (460)	$ (733)
Ending balance (in shares)	6,893,774	6,551,917	5,253,377	4,715,291	6,893,774	5,253,377	6,893,774
Ending balance	$ 172,176	$ 163,507	$ 130,595	$ 117,140	$ 172,176	$ 130,595	$ 172,176
Series D
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series D Preferred Stock			$ 185	$ 96
Series D | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	56,857	56,857	23,190	19,145	56,857	19,145
Beginning balance	$ 1,396	$ 1,396	$ 572	$ 473	$ 1,396	$ 473
Issuance of Series D Preferred Stock (in shares)		0	7,835	4,045
Issuance of Series D Preferred Stock		$ 0	$ 192	$ 99
Ending balance (in shares)	56,857	56,857	31,025	23,190	56,857	31,025	56,857
Ending balance	$ 1,396	$ 1,396	$ 764	$ 572	$ 1,396	$ 764	$ 1,396
Series L | Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	5,387,160	5,387,160	5,387,160	5,387,160	5,387,160	5,387,160
Beginning balance	$ 152,834	$ 152,834	$ 152,834	$ 152,834	$ 152,834	$ 152,834
Ending balance (in shares)	5,387,160	5,387,160	5,387,160	5,387,160	5,387,160	5,387,160	5,387,160
Ending balance	$ 152,834	$ 152,834	$ 152,834	$ 152,834	$ 152,834	$ 152,834	$ 152,834