Schedule III - Consolidated Real Estate and Accumulated Depreciation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 10, 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	13,755
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	18,008
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs	20,382
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	10,024
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total	32,938	32,427
SEC Schedule III, Real Estate Accumulated Depreciation	(1,817)	(1,811)
Trinity Place Property [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	14,872
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs	3,193
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	3,843
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total	18,477
SEC Schedule III, Real Estate Accumulated Depreciation	0
SEC Schedule III,Real Estate And Accumulated Depreciation Date Of Acquired 1	1990
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	0
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs	5,167
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	770
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total	1,678
SEC Schedule III, Real Estate Accumulated Depreciation	0
SEC Schedule III,Real Estate And Accumulated Depreciation Date Of Acquired 1	1980
SEC Schedule III,Real Estate And Accumulated Depreciation Date 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	4,895
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	0
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs	11,578
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	1,831
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total	6,751
SEC Schedule III, Real Estate Accumulated Depreciation	0
SEC Schedule III,Real Estate And Accumulated Depreciation Date Of Acquired 1	1988
SEC Schedule III,Real Estate And Accumulated Depreciation Date Of Acquired 2	1989
SEC Schedule III,Real Estate And Accumulated Depreciation Date 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	3,136
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs	444
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	3,580
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Total	6,032
SEC Schedule III, Real Estate Accumulated Depreciation	$ (1,817)
SEC Schedule III,Real Estate And Accumulated Depreciation Date Of Acquired 1	2001