OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Intangible liabilities
Gross balance	$ (2,368)		$ (2,368)		$ (3,521)
Accumulated amortization	1,488		1,488		2,239
Net	(880)		$ (880)		$ (1,282)
Average useful life (in years)			4 years		4 years
Amortization
Amortization of the acquired below-market leases	148	$ 421	$ 402	$ 934
Future accretion of acquisition related intangible liabilities
Net	(880)		(880)		$ (1,282)
Acquired Below-Market Leases
Intangible liabilities
Net	(880)		(880)
Future accretion of acquisition related intangible liabilities
2020 (Six months ending December 31, 2020)	(299)		(299)
2021	(347)		(347)
2022	(234)		(234)
2023	0		0
2024	0		0
Thereafter	0		0
Net	(880)		(880)
Acquired Above-Market Leases
Intangible assets
Gross balance	37		37		74
Accumulated amortization	(12)		(12)		(42)
Net	25		$ 25		$ 32
Average useful life (in years)			7 years		5 years
Amortization
Amortization expense	1	21	$ 7	42
Future amortization of acquisition related intangible assets
2020 (Six months ending December 31, 2020)	2		2
2021	5		5
2022	5		5
2023	6		6
2024	6		6
Thereafter	1		1
Net	25		25		$ 32
Acquired In-Place Leases
Intangible assets
Gross balance	12,135		12,135		13,653
Accumulated amortization	(8,608)		(8,608)		(9,382)
Net	3,527		$ 3,527		$ 4,271
Average useful life (in years)			9 years		8 years
Amortization
Amortization expense	303	$ 540	$ 744	$ 1,141
Future amortization of acquisition related intangible assets
2020 (Six months ending December 31, 2020)	605		605
2021	899		899
2022	663		663
2023	375		375
2024	375		375
Thereafter	610		610
Net	3,527		3,527		$ 4,271
Trade Name and License
Intangible assets
Gross balance	2,957		2,957		2,957
Accumulated amortization	0		0		0
Net	2,957		2,957		2,957
Future amortization of acquisition related intangible assets
Net	$ 2,957		$ 2,957		$ 2,957