OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Intangible liabilities
Net	$ (1,938)		$ (1,938)		$ (2,872)
Future accretion of acquisition related intangible liabilities
Net	(1,938)		(1,938)		(2,872)
Acquired Below-Market Leases
Intangible liabilities
Gross balance	(4,757)		(4,757)		(6,618)
Accumulated amortization	2,819		2,819		3,746
Net	(1,938)		$ (1,938)		$ (2,872)
Average useful life (in years)			3 years		4 years
Future accretion of acquisition related intangible liabilities
2019 (Six months ending December 31, 2019)	(656)		$ (656)
2020	(701)		(701)
2021	(347)		(347)
2022	(234)		(234)
2023	0		0
Thereafter	0		0
Net	(1,938)		(1,938)		$ (2,872)
Acquired Above-Market Leases
Intangible assets
Gross balance	146		146		146
Accumulated amortization	(93)		(93)		(51)
Net	53		$ 53		$ 95
Average useful life (in years)			3 years		3 years
Amortization
Amortization expense	21	$ 14	$ 42	$ 26
Future amortization of acquisition related intangible assets
2019 (Six months ending December 31, 2019)	21		21
2020	9		9
2021	5		5
2022	5		5
2023	6		6
Thereafter	7		7
Net	53		53		$ 95
Acquired In-Place Leases
Intangible assets
Gross balance	14,054		14,054		16,210
Accumulated amortization	(8,812)		(8,812)		(9,731)
Net	5,242		$ 5,242		$ 6,479
Average useful life (in years)			8 years		8 years
Amortization
Amortization expense	540	930	$ 1,141	1,842
Future amortization of acquisition related intangible assets
2019 (Six months ending December 31, 2019)	971		971
2020	1,349		1,349
2021	899		899
2022	663		663
2023	375		375
Thereafter	985		985
Net	5,242		5,242		$ 6,479
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
Rental and Other Property Income | Acquired Below-Market Leases
Amortization
Amortization expense	$ 421	$ 520	$ 934	$ 1,233