REDEEMABLE PREFERRED STOCK - Series A1 and Series A Preferred Stock Narrative (Details) - USD ($)	3 Months Ended						9 Months Ended		84 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Dec. 31, 2022	Jan. 31, 2020
Class of Stock [Line Items]
Non-issuance offering costs for preferred stock and warrants							$ 10,200,000
Warrant right to purchase a share of common stock (in shares)											0.25
Net proceeds from issuance of preferred stock							76,082,000	$ 77,631,000
Redeemable preferred stock deemed dividends	$ 0			$ 0			0	19,000
Reclassification of Series A Preferred Stock from temporary equity to permanent equity							15,616,000	24,373,000	$ 199,600,000
Series A Preferred Warrants
Class of Stock [Line Items]
Gross proceeds from issuance of preferred stock and warrants							761,000
Issuance offering costs for preferred stock and warrants							142,000
Reclassification to deferred rent receivable and charges							$ 5,000
Number of warrants included in preferred stock unit (in shares)											1
Warrants issued (in shares)	4,603,287						4,603,287		4,603,287
Series A1 Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in usd per share)	$ 0.001						$ 0.001		$ 0.001	$ 0.001
Preferred stock, liquidation preference per share (in usd per share)	$ 25.00						$ 25.00		$ 25.00	$ 25.00
Preferred stock, shares issued (in shares)	9,288,485						9,288,485		9,288,485	5,966,077
Gross proceeds from issuance of preferred stock and warrants							$ 224,900,000
Issuance offering costs for preferred stock and warrants							16,500,000
Reclassification to deferred rent receivable and charges							$ 3,100,000
Preferred stock, shares outstanding (in shares)	9,223,544						9,223,544		9,223,544	5,956,147
Preferred stock, shares redeemed (in shares)							64,941
Series A1 Preferred Stock | Preferred Stock, Shares Issued, One
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	9,088,485						9,088,485		9,088,485
Series A1 Preferred Stock | Preferred Stock, Shares Issued, Two
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	200,000						200,000		200,000
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in usd per share)	$ 0.001						$ 0.001		$ 0.001	$ 0.001
Preferred stock, liquidation preference per share (in usd per share)	$ 25.00						$ 25.00		$ 25.00	$ 25.00
Preferred stock, shares issued (in shares)	8,820,338						8,820,338		8,820,338	8,126,597
Gross proceeds from issuance of preferred stock and warrants							$ 205,400,000
Issuance offering costs for preferred stock and warrants							17,000,000
Reclassification to deferred rent receivable and charges							$ 1,900,000
Preferred stock, shares outstanding (in shares)	7,694,199						7,694,199		7,694,199	7,565,349
Redeemable preferred stock deemed dividends	$ 0			0			$ 0	$ 19,000
Reclassification of Series A Preferred Stock from temporary equity to permanent equity		$ 6,804,000	$ 8,812,000	$ 7,038,000	$ 9,668,000	$ 7,667,000
Series A Preferred Stock | Preferred Stock, Shares Issued, One
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	8,251,657						8,251,657		8,251,657
Series A Preferred Stock | Preferred Stock, Shares Issued, Two
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	568,681						568,681		568,681
Net proceeds from issuance of preferred stock							$ 0
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	7,694,199						7,694,199		7,694,199
Preferred stock, shares redeemed (in shares)							1,126,139