OTHER INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Intangible assets and liabilities
Amortization expenses	$ 19,128,000	$ 16,629,000
Intangible liabilities
Net	(8,002,000)		(8,657,000)
Future accretion of acquisition related intangible liabilities
Net	(8,002,000)		(8,657,000)
Acquired Below-Market Leases
Intangible assets and liabilities
Amortization expenses	655,000	648,000
Intangible liabilities
Gross balance	(20,312,000)		(20,333,000)
Accumulated amortization	12,310,000		11,676,000
Net	(8,002,000)		(8,657,000)
Average useful life	8 years		8 years
Future accretion of acquisition related intangible liabilities
2015 (Nine months ending December 31, 2015)	(1,914,000)
2016	(2,502,000)
2017	(2,399,000)
2018	(963,000)
2019	(224,000)
Net	(8,002,000)		(8,657,000)
Acquired Above-Market Leases
Intangible assets and liabilities
Amortization expenses	79,000	337,000
Intangible assets
Gross balance	1,936,000		2,402,000
Accumulated amortization	(1,652,000)		(2,039,000)
Net	284,000		363,000
Average useful life	7 years		7 years
Future amortization of acquisition related intangible assets
2015 (Nine months ending December 31, 2015)	162,000
2016	88,000
2017	26,000
2018	8,000
Net	284,000		363,000
Acquired In-Place Leases
Intangible assets and liabilities
Amortization expenses	529,000	612,000
Intangible assets
Gross balance	22,660,000		22,680,000
Accumulated amortization	(16,979,000)		(16,470,000)
Net	5,681,000		6,210,000
Average useful life	8 years		8 years
Future amortization of acquisition related intangible assets
2015 (Nine months ending December 31, 2015)	1,312,000
2016	1,346,000
2017	915,000
2018	666,000
2019	488,000
Thereafter	954,000
Net	5,681,000		6,210,000
Tax Abatement
Intangible assets and liabilities
Amortization expenses	138,000	138,000
Intangible assets
Gross balance	4,273,000		4,273,000
Accumulated amortization	(1,909,000)		(1,771,000)
Net	2,364,000		2,502,000
Average useful life	8 years		8 years
Future amortization of acquisition related intangible assets
2015 (Nine months ending December 31, 2015)	413,000
2016	551,000
2017	551,000
2018	551,000
2019	298,000
Net	2,364,000		2,502,000
Advance Bookings
Intangible assets and liabilities
Amortization expenses	0	67,000
Franchise Affiliation Fee
Intangible assets and liabilities
Amortization expenses	99,000	99,000
Intangible assets
Gross balance	3,936,000		3,936,000
Accumulated amortization	(3,080,000)		(2,981,000)
Net	856,000		955,000
Average useful life	10 years		10 years
Future amortization of acquisition related intangible assets
2015 (Nine months ending December 31, 2015)	295,000
2016	394,000
2017	167,000
Net	856,000		955,000
Acquired Below-Market Ground Lease
Intangible assets and liabilities
Amortization expenses	35,000	35,000
Intangible assets
Gross balance	11,685,000		11,685,000
Accumulated amortization	(1,317,000)		(1,282,000)
Net	10,368,000		10,403,000
Average useful life	84 years		84 years
Future amortization of acquisition related intangible assets
2015 (Nine months ending December 31, 2015)	105,000
2016	140,000
2017	140,000
2018	140,000
2019	140,000
Thereafter	9,703,000
Net	$ 10,368,000		$ 10,403,000