RELATED PARTY MANAGEMENT SERVICES BUSINESS - Summary of Amounts Due (Details) - Management Agreement PINE - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Real Estate [Line Items]
Management Services Fee due from PINE	$ 638	$ 631
Other		35
Total	$ 638	$ 666

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant