OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Intangible liabilities
Net	$ (1,028)		$ (1,282)
Future accretion of acquisition related intangible liabilities
Net	(1,028)		(1,282)
Acquired Below-Market Leases
Intangible liabilities
Gross balance	(2,368)		(3,521)
Accumulated amortization	1,340		2,239
Net	$ (1,028)		$ (1,282)
Average useful life (in years)	4 years		4 years
Future accretion of acquisition related intangible liabilities
2020 (Nine months ending December 31, 2020)	$ (447)
2021	(347)
2022	(234)
2023	0
2024	0
Thereafter	0
Net	(1,028)		$ (1,282)
Acquired Above-Market Leases
Intangible assets
Gross balance	37		74
Accumulated amortization	(11)		(42)
Net	$ 26		$ 32
Average useful life (in years)	7 years		5 years
Amortization
Amortization expense	$ 6	$ 21
Future amortization of acquisition related intangible assets
2020 (Nine months ending December 31, 2020)	3
2021	5
2022	5
2023	6
2024	6
Thereafter	1
Net	26		$ 32
Acquired In-Place Leases
Intangible assets
Gross balance	12,135		13,653
Accumulated amortization	(8,305)		(9,382)
Net	$ 3,830		$ 4,271
Average useful life (in years)	9 years		8 years
Amortization
Amortization expense	$ 441	601
Future amortization of acquisition related intangible assets
2020 (Nine months ending December 31, 2020)	908
2021	899
2022	663
2023	375
2024	375
Thereafter	610
Net	3,830		$ 4,271
Trade Name and License
Intangible assets
Gross balance	2,957		2,957
Accumulated amortization	0		0
Net	2,957		2,957
Future amortization of acquisition related intangible assets
Net	2,957		$ 2,957
Rental and Other Property Income | Acquired Below-Market Leases
Amortization
Amortization expense	$ 254	$ 513