Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 16 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 970,964	$ 782,166	$ 783,233	$ 595,959
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	914,488
Cost Capitalized Subsequent to Initial Investment	56,476
Land	589,497
Building and Improvements	381,467
Total Investment in Real Estate	970,964
Accumulated Depreciation and Amortization	133,353
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Chester [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,158
Land	1,158
Total Investment in Real Estate	$ 1,158
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Churchville [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,012
Land	602
Building and Improvements	410
Total Investment in Real Estate	1,012
Accumulated Depreciation and Amortization	$ 194
Date of Initial Leasehold or Acquisition Investment	2006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Corona One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 115
Cost Capitalized Subsequent to Initial Investment	300
Land	113
Building and Improvements	302
Total Investment in Real Estate	415
Accumulated Depreciation and Amortization	$ 302
Date of Initial Leasehold or Acquisition Investment	1965
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Corona Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,543
Land	1,903
Building and Improvements	640
Total Investment in Real Estate	2,543
Accumulated Depreciation and Amortization	$ 165
Date of Initial Leasehold or Acquisition Investment	2013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Cortland Manor [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,872
Land	1,872
Total Investment in Real Estate	$ 1,872
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Eastchester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 993
Land	578
Building and Improvements	415
Total Investment in Real Estate	993
Accumulated Depreciation and Amortization	$ 23
Date of Initial Leasehold or Acquisition Investment	2017
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Garden City One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 362
Cost Capitalized Subsequent to Initial Investment	242
Land	236
Building and Improvements	368
Total Investment in Real Estate	604
Accumulated Depreciation and Amortization	$ 183
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Garnerville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,508
Land	1,508
Total Investment in Real Estate	$ 1,508
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glen Head One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 235
Cost Capitalized Subsequent to Initial Investment	216
Land	103
Building and Improvements	348
Total Investment in Real Estate	451
Accumulated Depreciation and Amortization	$ 348
Date of Initial Leasehold or Acquisition Investment	1982
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glen HeadTwo [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 463
Cost Capitalized Subsequent to Initial Investment	282
Land	301
Building and Improvements	444
Total Investment in Real Estate	745
Accumulated Depreciation and Amortization	$ 245
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glendale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 369
Cost Capitalized Subsequent to Initial Investment	280
Land	236
Building and Improvements	413
Total Investment in Real Estate	649
Accumulated Depreciation and Amortization	$ 216
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Great Neck One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 500
Cost Capitalized Subsequent to Initial Investment	252
Land	450
Building and Improvements	302
Total Investment in Real Estate	752
Accumulated Depreciation and Amortization	$ 143
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hartsdale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,626
Land	1,626
Total Investment in Real Estate	$ 1,626
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hawthorne One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,084
Land	2,084
Total Investment in Real Estate	$ 2,084
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hopewell Junction One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,163
Land	1,163
Total Investment in Real Estate	$ 1,163
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Huntington Station One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 141
Cost Capitalized Subsequent to Initial Investment	284
Land	84
Building and Improvements	341
Total Investment in Real Estate	425
Accumulated Depreciation and Amortization	$ 178
Date of Initial Leasehold or Acquisition Investment	1978
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hyde Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 990
Land	990
Total Investment in Real Estate	$ 990
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Katonah One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,084
Land	1,084
Total Investment in Real Estate	$ 1,084
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Lakeville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,028
Land	203
Building and Improvements	825
Total Investment in Real Estate	1,028
Accumulated Depreciation and Amortization	$ 511
Date of Initial Leasehold or Acquisition Investment	2008
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Levittown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 503
Cost Capitalized Subsequent to Initial Investment	42
Land	327
Building and Improvements	218
Total Investment in Real Estate	545
Accumulated Depreciation and Amortization	$ 182
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Levittown Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 547
Cost Capitalized Subsequent to Initial Investment	86
Land	356
Building and Improvements	277
Total Investment in Real Estate	633
Accumulated Depreciation and Amortization	$ 221
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Long Island City One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,717
Land	1,183
Building and Improvements	1,534
Total Investment in Real Estate	2,717
Accumulated Depreciation and Amortization	$ 343
Date of Initial Leasehold or Acquisition Investment	2013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mamaroneck One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,429
Land	1,429
Total Investment in Real Estate	$ 1,429
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Massapequa One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 333
Cost Capitalized Subsequent to Initial Investment	285
Land	217
Building and Improvements	401
Total Investment in Real Estate	618
Accumulated Depreciation and Amortization	$ 198
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mastic One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 313
Cost Capitalized Subsequent to Initial Investment	110
Land	204
Building and Improvements	219
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 197
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 719
Land	719
Total Investment in Real Estate	$ 719
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 751
Cost Capitalized Subsequent to Initial Investment	274
Land	489
Building and Improvements	536
Total Investment in Real Estate	1,025
Accumulated Depreciation and Amortization	$ 314
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,281
Land	1,281
Total Investment in Real Estate	$ 1,281
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Millwood Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,448
Land	1,448
Total Investment in Real Estate	$ 1,448
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mount Kisco One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,907
Land	1,907
Total Investment in Real Estate	$ 1,907
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mount Vernon One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 985
Land	985
Total Investment in Real Estate	$ 985
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Nanuet One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,316
Land	2,316
Total Investment in Real Estate	$ 2,316
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Naples One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,257
Land	827
Building and Improvements	430
Total Investment in Real Estate	1,257
Accumulated Depreciation and Amortization	$ 204
Date of Initial Leasehold or Acquisition Investment	2006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Paltz One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 971
Land	971
Total Investment in Real Estate	$ 971
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Rochelle One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,887
Land	1,887
Total Investment in Real Estate	$ 1,887
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Rochelle Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 189
Cost Capitalized Subsequent to Initial Investment	357
Land	104
Building and Improvements	442
Total Investment in Real Estate	546
Accumulated Depreciation and Amortization	$ 208
Date of Initial Leasehold or Acquisition Investment	1982
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Windsor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,084
Land	1,084
Total Investment in Real Estate	$ 1,084
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New York One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 126
Cost Capitalized Subsequent to Initial Investment	399
Land	78
Building and Improvements	447
Total Investment in Real Estate	525
Accumulated Depreciation and Amortization	$ 286
Date of Initial Leasehold or Acquisition Investment	1972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Newburgh One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 527
Land	527
Total Investment in Real Estate	$ 527
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Newburgh Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,192
Land	1,192
Total Investment in Real Estate	$ 1,192
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Niskayuna One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 425
Cost Capitalized Subsequent to Initial Investment	35
Land	275
Building and Improvements	185
Total Investment in Real Estate	460
Accumulated Depreciation and Amortization	$ 185
Date of Initial Leasehold or Acquisition Investment	1986
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | North Lindenhurst One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 295
Cost Capitalized Subsequent to Initial Investment	243
Land	192
Building and Improvements	346
Total Investment in Real Estate	538
Accumulated Depreciation and Amortization	$ 170
Date of Initial Leasehold or Acquisition Investment	1998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Ossining One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 231
Cost Capitalized Subsequent to Initial Investment	204
Land	117
Building and Improvements	318
Total Investment in Real Estate	435
Accumulated Depreciation and Amortization	$ 139
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Ozone Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 58
Cost Capitalized Subsequent to Initial Investment	365
Land	45
Building and Improvements	378
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 202
Date of Initial Leasehold or Acquisition Investment	1976
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Peekskill One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,207
Land	2,207
Total Investment in Real Estate	$ 2,207
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pelham Manor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 137
Cost Capitalized Subsequent to Initial Investment	307
Land	75
Building and Improvements	369
Total Investment in Real Estate	444
Accumulated Depreciation and Amortization	$ 206
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pelham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,035
Land	1,035
Total Investment in Real Estate	$ 1,035
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Perry One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,444
Land	1,044
Building and Improvements	400
Total Investment in Real Estate	1,444
Accumulated Depreciation and Amortization	$ 189
Date of Initial Leasehold or Acquisition Investment	2006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pleasant Valley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 398
Cost Capitalized Subsequent to Initial Investment	62
Land	240
Building and Improvements	220
Total Investment in Real Estate	460
Accumulated Depreciation and Amortization	$ 206
Date of Initial Leasehold or Acquisition Investment	1986
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Chester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 941
Building and Improvements	941
Total Investment in Real Estate	941
Accumulated Depreciation and Amortization	$ 387
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Chester Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,015
Land	1,015
Total Investment in Real Estate	$ 1,015
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Jefferson One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 388
Cost Capitalized Subsequent to Initial Investment	293
Land	246
Building and Improvements	435
Total Investment in Real Estate	681
Accumulated Depreciation and Amortization	$ 244
Date of Initial Leasehold or Acquisition Investment	1985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 591
Land	591
Total Investment in Real Estate	$ 591
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,020
Land	1,020
Total Investment in Real Estate	$ 1,020
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,232
Cost Capitalized Subsequent to Initial Investment	(32)
Land	1,200
Total Investment in Real Estate	$ 1,200
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,340
Cost Capitalized Subsequent to Initial Investment	(60)
Land	1,280
Total Investment in Real Estate	$ 1,280
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,306
Land	1,306
Total Investment in Real Estate	$ 1,306
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,355
Land	1,355
Total Investment in Real Estate	$ 1,355
Date of Initial Leasehold or Acquisition Investment	2011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Prattsburg One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 553
Land	303
Building and Improvements	250
Total Investment in Real Estate	553
Accumulated Depreciation and Amortization	$ 118
Date of Initial Leasehold or Acquisition Investment	2006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rego Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,783
Land	2,104
Building and Improvements	679
Total Investment in Real Estate	2,783
Accumulated Depreciation and Amortization	$ 175
Date of Initial Leasehold or Acquisition Investment	2013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Riverhead One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 724
Land	432
Building and Improvements	292
Total Investment in Real Estate	724
Accumulated Depreciation and Amortization	$ 229
Date of Initial Leasehold or Acquisition Investment	1998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rokaway Park One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,605
Land	1,605
Total Investment in Real Estate	$ 1,605
Date of Initial Leasehold or Acquisition Investment	2013