Schedule III - Consolidated Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands		10 Months Ended
		Dec. 31, 2015	Feb. 28, 2015	Feb. 09, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances		$ 40,000
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land		13,780
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Air Rights		9,134
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	[1]	9,514
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs		12,148
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land		13,780
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount Of Air Rights		9,134
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	[1]	21,662
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total		44,576	$ 32,938	$ 32,427
SEC Schedule III, Real Estate Accumulated Depreciation		(1,938)	$ (1,817)	$ (1,811)
Paramus, NJ [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land		908
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	[1]	640
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs		1,517
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land		908
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount Of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	[1]	2,157
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total		3,065
SEC Schedule III, Real Estate Accumulated Depreciation		$ 0
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Acquisition 1		1980
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Construction 1		1984
Westbury, NY [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances		$ 0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land		4,920
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	[1]	1,707
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs		2,079
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land		4,920
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount Of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	[1]	3,786
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total		8,706
SEC Schedule III, Real Estate Accumulated Depreciation		$ 0
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Acquisition 1		1988
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Acquisition 2		1989
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Construction 1		1989
West Palm Beach, FL [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances		$ 0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land		2,452
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	[1]	3,580
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs		688
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land		2,452
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount Of Air Rights		0
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	[1]	4,268
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total		6,720
SEC Schedule III, Real Estate Accumulated Depreciation		$ (1,938)
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Acquisition 1		2001
77 Greenwich, NY [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances		$ 40,000
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land		5,500
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Air Rights		9,134
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	[1]	3,587
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs		7,864
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land		5,500
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount Of Air Rights		9,134
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	[1]	11,451
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total		26,085
SEC Schedule III, Real Estate Accumulated Depreciation		$ 0
SEC Schedule III, Real Estate And Accumulated Depreciation Date of Acquisition 1		1990

[1] Depreciation on buildings and improvements reflected in the consolidated statement of operations is calculated on the straight-line basis over estimated useful lives of 10 to 39 years.