Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 16 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 1,043,106	$ 970,964	$ 782,166	$ 783,233
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Bluff [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	2,985
Land	2,166
Building and Improvements	819
Total Investment in Real Estate	2,985
Accumulated Depreciation and Amortization	$ 30
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Brookland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,468
Land	149
Building and Improvements	1,319
Total Investment in Real Estate	1,468
Accumulated Depreciation and Amortization	$ 615
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Jonesboro One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 868
Land	173
Building and Improvements	695
Total Investment in Real Estate	868
Accumulated Depreciation and Amortization	$ 338
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Fayetteville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,266
Land	1,637
Building and Improvements	629
Total Investment in Real Estate	2,266
Accumulated Depreciation and Amortization	$ 23
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Jonesboro Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,985
Land	330
Building and Improvements	2,655
Total Investment in Real Estate	2,985
Accumulated Depreciation and Amortization	$ 1,285
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Fayetteville Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,867
Land	1,971
Building and Improvements	896
Total Investment in Real Estate	2,867
Accumulated Depreciation and Amortization	$ 33
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Hope [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,472
Land	999
Building and Improvements	473
Total Investment in Real Estate	1,472
Accumulated Depreciation and Amortization	$ 18
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Little Rock [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 978
Land	535
Building and Improvements	443
Total Investment in Real Estate	978
Accumulated Depreciation and Amortization	$ 19
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Rogers [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 927
Land	533
Building and Improvements	394
Total Investment in Real Estate	927
Accumulated Depreciation and Amortization	$ 17
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS [Member] | Texarkana [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,592
Land	1,058
Building and Improvements	534
Total Investment in Real Estate	1,592
Accumulated Depreciation and Amortization	$ 21
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Bellflower One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,369
Land	910
Building and Improvements	459
Total Investment in Real Estate	1,369
Accumulated Depreciation and Amortization	$ 271
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Benicia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,224
Land	1,058
Building and Improvements	1,166
Total Investment in Real Estate	2,224
Accumulated Depreciation and Amortization	$ 714
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Chula Vista One[Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,385
Land	889
Building and Improvements	1,496
Total Investment in Real Estate	2,385
Accumulated Depreciation and Amortization	$ 299
Date of Initial Leasehold or Acquisition Investment	2014
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Coachella One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,235
Land	1,217
Building and Improvements	1,018
Total Investment in Real Estate	2,235
Accumulated Depreciation and Amortization	$ 589
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Cotati One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,072
Land	4,008
Building and Improvements	2,064
Total Investment in Real Estate	6,072
Accumulated Depreciation and Amortization	$ 407
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Fillmore One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,354
Land	950
Building and Improvements	404
Total Investment in Real Estate	1,354
Accumulated Depreciation and Amortization	$ 238
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Grass Valley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,485
Land	853
Building and Improvements	632
Total Investment in Real Estate	1,485
Accumulated Depreciation and Amortization	$ 128
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Hesperia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,643
Land	849
Building and Improvements	794
Total Investment in Real Estate	1,643
Accumulated Depreciation and Amortization	$ 440
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Hesperia Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,055
Land	492
Building and Improvements	1,563
Total Investment in Real Estate	2,055
Accumulated Depreciation and Amortization	$ 375
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Indio One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,250
Land	302
Building and Improvements	948
Total Investment in Real Estate	1,250
Accumulated Depreciation and Amortization	$ 201
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | Indio Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,727
Land	1,486
Building and Improvements	1,241
Total Investment in Real Estate	2,727
Accumulated Depreciation and Amortization	$ 276
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | La Palma One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,971
Land	1,389
Building and Improvements	582
Total Investment in Real Estate	1,971
Accumulated Depreciation and Amortization	$ 339
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA [Member] | La Puenta [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 7,615
Land	6,405
Building and Improvements	1,210
Total Investment in Real Estate	7,615
Accumulated Depreciation and Amortization	$ 282
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Cochise One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,765
Land	269
Building and Improvements	1,496
Total Investment in Real Estate	1,765
Accumulated Depreciation and Amortization	$ 133
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Cochise Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,440
Land	1,849
Building and Improvements	2,591
Total Investment in Real Estate	4,440
Accumulated Depreciation and Amortization	$ 182
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,331
Land	992
Building and Improvements	339
Total Investment in Real Estate	1,331
Accumulated Depreciation and Amortization	$ 30
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,448
Land	983
Building and Improvements	465
Total Investment in Real Estate	1,448
Accumulated Depreciation and Amortization	$ 40
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,503
Land	839
Building and Improvements	664
Total Investment in Real Estate	1,503
Accumulated Depreciation and Amortization	$ 55
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Phoenix One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,943
Land	1,311
Building and Improvements	632
Total Investment in Real Estate	1,943
Accumulated Depreciation and Amortization	$ 18
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,602
Land	796
Building and Improvements	806
Total Investment in Real Estate	1,602
Accumulated Depreciation and Amortization	$ 68
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,722
Land	1,178
Building and Improvements	544
Total Investment in Real Estate	1,722
Accumulated Depreciation and Amortization	$ 45
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,838
Land	1,261
Building and Improvements	577
Total Investment in Real Estate	1,838
Accumulated Depreciation and Amortization	$ 50
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Seven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,177
Land	1,532
Building and Improvements	645
Total Investment in Real Estate	2,177
Accumulated Depreciation and Amortization	$ 53
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Eight [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,185
Land	1,612
Building and Improvements	573
Total Investment in Real Estate	2,185
Accumulated Depreciation and Amortization	$ 48
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Nine [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,415
Land	433
Building and Improvements	1,982
Total Investment in Real Estate	2,415
Accumulated Depreciation and Amortization	$ 140
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Ten [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,868
Land	1,255
Building and Improvements	1,613
Total Investment in Real Estate	2,868
Accumulated Depreciation and Amortization	$ 128
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Eleven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,112
Land	1,593
Building and Improvements	1,519
Total Investment in Real Estate	3,112
Accumulated Depreciation and Amortization	$ 118
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Twelve [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,169
Land	2,005
Building and Improvements	1,164
Total Investment in Real Estate	3,169
Accumulated Depreciation and Amortization	$ 87
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Thirteen [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,204
Land	1,839
Building and Improvements	1,365
Total Investment in Real Estate	3,204
Accumulated Depreciation and Amortization	$ 106
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Maricopa Fourteen [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,928
Land	2,334
Building and Improvements	1,594
Total Investment in Real Estate	3,928
Accumulated Depreciation and Amortization	$ 116
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pima One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,261
Land	664
Building and Improvements	597
Total Investment in Real Estate	1,261
Accumulated Depreciation and Amortization	$ 49
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pima Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,301
Land	557
Building and Improvements	744
Total Investment in Real Estate	1,301
Accumulated Depreciation and Amortization	$ 60
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pima Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,303
Land	590
Building and Improvements	713
Total Investment in Real Estate	1,303
Accumulated Depreciation and Amortization	$ 58
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pima Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,085
Land	1,487
Building and Improvements	598
Total Investment in Real Estate	2,085
Accumulated Depreciation and Amortization	$ 52
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pima Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,652
Land	2,924
Building and Improvements	728
Total Investment in Real Estate	3,652
Accumulated Depreciation and Amortization	$ 59
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | ARIZONA [Member] | Pinal [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,022
Land	2,549
Building and Improvements	1,473
Total Investment in Real Estate	4,022
Accumulated Depreciation and Amortization	$ 119
Date of Initial Leasehold or Acquisition Investment	2017
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 210
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 275
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 166
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 202
Date of Initial Leasehold or Acquisition Investment	1978
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 537
Date of Initial Leasehold or Acquisition Investment	2008
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 189
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 231
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 416
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 228
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 202
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 348
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Mount Kisco 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Naples One [Member]
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	$ 221
Date of Initial Leasehold or Acquisition Investment	2006
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | New Rochelle One [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	358
Land	104
Building and Improvements	443
Total Investment in Real Estate	547
Accumulated Depreciation and Amortization	$ 240
Date of Initial Leasehold or Acquisition Investment	1982
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | New Rochelle Two [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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 309
Date of Initial Leasehold or Acquisition Investment	1972
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Niskayuna [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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | North Andover [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 393
Cost Capitalized Subsequent to Initial Investment	33
Land	256
Building and Improvements	170
Total Investment in Real Estate	426
Accumulated Depreciation and Amortization	$ 148
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	198
Land	117
Building and Improvements	312
Total Investment in Real Estate	429
Accumulated Depreciation and Amortization	$ 171
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 228
Date of Initial Leasehold or Acquisition Investment	1976
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 230
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Prattsburgh [Member]
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	$ 128
Date of Initial Leasehold or Acquisition Investment	2006
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Perry One
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	$ 205
Date of Initial Leasehold or Acquisition Investment	2006
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 209
Date of Initial Leasehold or Acquisition Investment	1986
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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	$ 443
Date of Initial Leasehold or Acquisition Investment	2011
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | Port Jefferson One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 185
Cost Capitalized Subsequent to Initial Investment	3,080
Land	246
Building and Improvements	3,019
Total Investment in Real Estate	3,265
Accumulated Depreciation and Amortization	$ 14
Date of Initial Leasehold or Acquisition Investment	1985
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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
Accumulated Depreciation And Amortization Description [Member] | NEW YORK | 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