INTANGIBLE ASSETS AND LIABILITIES - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Intangible assets, net:
Total Cost	$ 73,029	$ 94,173
Accumulated Amortization	(44,473)	(45,603)
Total	28,556	48,570
Intangible liabilities, net:
Total Cost	27,025	31,263
Accumulated Amortization	(14,044)	(12,815)
Total	12,981	18,448
In-place lease value
Intangible assets, net:
Total Cost	72,376	91,552
Accumulated Amortization	(44,066)	(43,400)
Total	28,310	48,152
Tenant relationship value
Intangible assets, net:
Total Cost	167	2,091
Accumulated Amortization	(97)	(1,938)
Total	70	153
Above market leases acquired
Intangible assets, net:
Total Cost	486	530
Accumulated Amortization	(310)	(265)
Total	$ 176	$ 265