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LEASES - Additional information (Details) $ in Thousands					3 Months Ended			7 Months Ended	8 Months Ended	9 Months Ended		10 Months Ended	12 Months Ended
	Nov. 01, 2021 $ / ft²	Nov. 01, 2020 $ / ft²	Sep. 17, 2020 USD ($) ft²	Oct. 20, 2019 $ / ft²	Dec. 31, 2020 $ / ft²	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) $ / ft²	Oct. 31, 2020 $ / ft²	Sep. 30, 2020 USD ($) lease	Sep. 30, 2019 USD ($)	Oct. 31, 2020 $ / ft²	Oct. 31, 2021 $ / ft²	Oct. 19, 2019 $ / ft²	Oct. 19, 2018 $ / ft²	Mar. 03, 2020 USD ($)	Jan. 03, 2020 USD ($) ft²	Sep. 20, 2019 USD ($)	Jun. 01, 2019 USD ($)	Mar. 11, 2019 ft²	Oct. 20, 2017 USD ($) ft²
Lessee, Lease, Description
Number of operating leases | lease										4
Land Subject to Ground Leases | ft²			50,488														22,546			21,420	41,715
Term of lease			65 months
Lessee, Operating Lease, Existence of Option to Extend [true false]			true
Option to extend lease term			5 years																	2 years	2 years
Rent per square foot | $ / ft²					9.40			10.00	13.00			20.75	21.75	19.75	7.50
Additional rent per square foot | $ / ft²	1	1		1	0.30
Tenant Improvements			$ 400																		$ 200
Operating lease liabilities						$ 4,957				$ 4,957							$ 1,400		$ 1,600		3,900
Operating lease asset						4,268		$ 3,831		4,268							$ 1,400		$ 1,600		$ 3,600
Financing lease asset						207		$ 180		207						$ 100		$ 200
Finance Lease, Liability						$ 220				$ 220						$ 100		$ 200
Lessor, Direct Financing Lease, Term of Contract																4 years		5 years
Lessee, Operating Lease, Discount Rate						4.50%				4.50%
Operating Lease, Weighted Average Remaining Lease Term						2 years 9 months 18 days				2 years 9 months 18 days
Finance Lease, Weighted Average Remaining Lease Term						4 years 1 month 6 days				4 years 1 month 6 days
Minimum
Lessee, Lease, Description
Lessee, Finance Lease, Discount Rate						8.30%				8.30%
Maximum
Lessee, Lease, Description
Lessee, Finance Lease, Discount Rate						9.70%				9.70%
General, and administrative
Lessee, Lease, Description
Operating Lease, Cost						$ 500	$ 400			$ 1,200	$ 800

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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