OTHER INTANGIBLE ASSETS (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Intangible assets and liabilities
Amortization expenses	$ 17,873,000	$ 17,677,000	$ 54,567,000	$ 51,592,000
Intangible liabilities
Net	(6,717,000)		(6,717,000)		$ (8,657,000)
Future accretion of acquisition related intangible liabilities
Net	(6,717,000)		(6,717,000)		(8,657,000)
Acquired Below-Market Leases
Intangible assets and liabilities
Amortization expenses	630,000	637,000	1,940,000	1,982,000
Intangible liabilities
Gross balance	(19,722,000)		(19,722,000)		(20,333,000)
Accumulated amortization	13,005,000		13,005,000		11,676,000
Net	(6,717,000)		$ (6,717,000)		$ (8,657,000)
Average useful life			8 years		8 years
Future accretion of acquisition related intangible liabilities
2015 (Three months ending December 31, 2015)	(629,000)		$ (629,000)
2016	(2,502,000)		(2,502,000)
2017	(2,399,000)		(2,399,000)
2018	(963,000)		(963,000)
2019	(224,000)		(224,000)
Net	(6,717,000)		(6,717,000)		$ (8,657,000)
Acquired Above-Market Leases
Intangible assets and liabilities
Amortization expenses	41,000	87,000	199,000	522,000
Intangible assets
Gross balance	1,072,000		1,072,000		2,402,000
Accumulated amortization	(908,000)		(908,000)		(2,039,000)
Net	164,000		$ 164,000		$ 363,000
Average useful life			7 years		7 years
Future amortization of acquisition related intangible assets
2015 (Three months ending December 31, 2015)	42,000		$ 42,000
2016	88,000		88,000
2017	26,000		26,000
2018	8,000		8,000
Net	164,000		164,000		$ 363,000
Acquired in-place Leases
Intangible assets and liabilities
Amortization expenses	413,000	589,000	1,461,000	1,788,000
Intangible assets
Gross balance	21,466,000		21,466,000		22,680,000
Accumulated amortization	(16,615,000)		(16,615,000)		(16,470,000)
Net	4,851,000		$ 4,851,000		$ 6,210,000
Average useful life			8 years		8 years
Future amortization of acquisition related intangible assets
2015 (Three months ending December 31, 2015)	391,000		$ 391,000
2016	1,380,000		1,380,000
2017	949,000		949,000
2018	689,000		689,000
2019	488,000		488,000
Thereafter	954,000		954,000
Net	4,851,000		4,851,000		$ 6,210,000
Tax Abatement
Intangible assets and liabilities
Amortization expenses	138,000	138,000	414,000	414,000
Intangible assets
Gross balance	4,273,000		4,273,000		4,273,000
Accumulated amortization	(2,185,000)		(2,185,000)		(1,771,000)
Net	2,088,000		$ 2,088,000		$ 2,502,000
Average useful life			8 years		8 years
Future amortization of acquisition related intangible assets
2015 (Three months ending December 31, 2015)	137,000		$ 137,000
2016	551,000		551,000
2017	551,000		551,000
2018	551,000		551,000
2019	298,000		298,000
Net	2,088,000		2,088,000		$ 2,502,000
Advance Bookings
Intangible assets and liabilities
Amortization expenses	0	56,000	0	190,000
Franchise Affiliation Fee
Intangible assets and liabilities
Amortization expenses	98,000	98,000	296,000	296,000
Intangible assets
Gross balance	3,936,000		3,936,000		3,936,000
Accumulated amortization	(3,277,000)		(3,277,000)		(2,981,000)
Net	659,000		$ 659,000		$ 955,000
Average useful life			10 years		10 years
Future amortization of acquisition related intangible assets
2015 (Three months ending December 31, 2015)	98,000		$ 98,000
2016	394,000		394,000
2017	167,000		167,000
Net	659,000		659,000		$ 955,000
Acquired Below-Market Ground Lease
Intangible assets and liabilities
Amortization expenses	35,000	$ 35,000	105,000	$ 105,000
Intangible assets
Gross balance	11,685,000		11,685,000		11,685,000
Accumulated amortization	(1,387,000)		(1,387,000)		(1,282,000)
Net	10,298,000		$ 10,298,000		$ 10,403,000
Average useful life			84 years		84 years
Future amortization of acquisition related intangible assets
2015 (Three months ending December 31, 2015)	35,000		$ 35,000
2016	140,000		140,000
2017	140,000		140,000
2018	140,000		140,000
2019	140,000		140,000
Thereafter	9,703,000		9,703,000
Net	$ 10,298,000		$ 10,298,000		$ 10,403,000