DEBT - Future Principal Payments (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Debt Instrument [Line Items]
2021 (Three months ending December 31, 2021)	$ 1,675
2022	77,848
2023	2,745
2024	2,880
2025	2,607
Thereafter	137,072
Total Debt	224,827
Mortgage Payable
Debt Instrument [Line Items]
2021 (Three months ending December 31, 2021)	0
2022	0
2023	0
2024	0
2025	0
Thereafter	97,100
Total Debt	97,100
Secured Borrowings Principal
Debt Instrument [Line Items]
2021 (Three months ending December 31, 2021)	469
2022	412
2023	424
2024	437
2025	450
Thereafter	5,614
Total Debt	7,806
2018 Revolving Credit Facility
Debt Instrument [Line Items]
2021 (Three months ending December 31, 2021)	0
2022	75,000
2023	0
2024	0
2025	0
Thereafter	0
Total Debt	75,000
Other
Debt Instrument [Line Items]
2021 (Three months ending December 31, 2021)	1,206
2022	2,436
2023	2,321
2024	2,443
2025	2,157
Thereafter	34,358
Total Debt	$ 44,921

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