Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 15 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 1,721,404	$ 1,514,750	$ 1,410,051	$ 1,246,588
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,662,484
Cost Capitalized Subsequent to Initial Investment	58,920
Land	870,119
Building and Improvements	851,285
Total Investment in Real Estate	1,721,404
Accumulated Depreciation and Amortization	$ 268,919
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | Various One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 72,413
Cost Capitalized Subsequent to Initial Investment	15,757
Land	40,430
Building and Improvements	47,740
Total Investment in Real Estate	88,170
Accumulated Depreciation and Amortization	37,976
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Panhandle
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	5,068
Cost Capitalized Subsequent to Initial Investment	0
Land	2,637
Building and Improvements	2,431
Total Investment in Real Estate	5,068
Accumulated Depreciation and Amortization	$ 460
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Paris One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,832
Land	2,645
Building and Improvements	1,187
Total Investment in Real Estate	3,832
Accumulated Depreciation and Amortization	$ 175
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Paris Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,322
Land	3,979
Building and Improvements	1,343
Total Investment in Real Estate	5,322
Accumulated Depreciation and Amortization	$ 222
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | PflugervilleMember
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,668
Land	617
Building and Improvements	4,051
Total Investment in Real Estate	4,668
Accumulated Depreciation and Amortization	$ 301
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Port Arthur One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,648
Land	505
Building and Improvements	2,143
Total Investment in Real Estate	2,648
Accumulated Depreciation and Amortization	$ 711
Date of Initial Leasehold or Acquisition Investment	2016
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Queen City
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,958
Land	1,474
Building and Improvements	4,484
Total Investment in Real Estate	5,958
Accumulated Depreciation and Amortization	$ 93
Date of Initial Leasehold or Acquisition Investment	2023
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Rockdale
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,238
Land	474
Building and Improvements	2,764
Total Investment in Real Estate	3,238
Accumulated Depreciation and Amortization	$ 144
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Round Rock One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,198
Land	831
Building and Improvements	3,367
Total Investment in Real Estate	4,198
Accumulated Depreciation and Amortization	$ 244
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Round Rock Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,641
Land	1,567
Building and Improvements	3,074
Total Investment in Real Estate	4,641
Accumulated Depreciation and Amortization	$ 260
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Rowlett
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,284
Land	840
Building and Improvements	444
Total Investment in Real Estate	1,284
Accumulated Depreciation and Amortization	$ 124
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,811
Land	510
Building and Improvements	2,301
Total Investment in Real Estate	2,811
Accumulated Depreciation and Amortization	$ 293
Date of Initial Leasehold or Acquisition Investment	2021
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,286
Land	487
Building and Improvements	2,799
Total Investment in Real Estate	3,286
Accumulated Depreciation and Amortization	$ 205
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,427
Land	446
Building and Improvements	2,981
Total Investment in Real Estate	3,427
Accumulated Depreciation and Amortization	$ 435
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,618
Land	494
Building and Improvements	3,124
Total Investment in Real Estate	3,618
Accumulated Depreciation and Amortization	$ 439
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Five
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,630
Land	1,020
Building and Improvements	2,610
Total Investment in Real Estate	3,630
Accumulated Depreciation and Amortization	$ 441
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Six
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,631
Land	1,330
Building and Improvements	2,301
Total Investment in Real Estate	3,631
Accumulated Depreciation and Amortization	$ 284
Date of Initial Leasehold or Acquisition Investment	2021
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Seven
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,719
Land	732
Building and Improvements	2,987
Total Investment in Real Estate	3,719
Accumulated Depreciation and Amortization	$ 439
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Eight
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,820
Land	1,459
Building and Improvements	2,361
Total Investment in Real Estate	3,820
Accumulated Depreciation and Amortization	$ 385
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Nine
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,936
Land	1,112
Building and Improvements	2,824
Total Investment in Real Estate	3,936
Accumulated Depreciation and Amortization	$ 156
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Ten
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,168
Land	1,657
Building and Improvements	2,511
Total Investment in Real Estate	4,168
Accumulated Depreciation and Amortization	$ 178
Date of Initial Leasehold or Acquisition Investment	2022
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Eleven
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,397
Land	997
Building and Improvements	3,400
Total Investment in Real Estate	4,397
Accumulated Depreciation and Amortization	$ 544
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Antonio Twelve
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,411
Land	642
Building and Improvements	3,769
Total Investment in Real Estate	4,411
Accumulated Depreciation and Amortization	$ 557
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | San Marcos One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,954
Land	251
Building and Improvements	1,703
Total Investment in Real Estate	1,954
Accumulated Depreciation and Amortization	$ 1,189
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Schertz
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,794
Land	813
Building and Improvements	1,981
Total Investment in Real Estate	2,794
Accumulated Depreciation and Amortization	$ 300
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Shamrock
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,045
Land	1,222
Building and Improvements	1,823
Total Investment in Real Estate	3,045
Accumulated Depreciation and Amortization	$ 334
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Spring Branch
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,257
Land	790
Building and Improvements	2,467
Total Investment in Real Estate	3,257
Accumulated Depreciation and Amortization	$ 78
Date of Initial Leasehold or Acquisition Investment	2023
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Temple One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,406
Cost Capitalized Subsequent to Initial Investment	(10)
Land	1,205
Building and Improvements	1,191
Total Investment in Real Estate	2,396
Accumulated Depreciation and Amortization	$ 864
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Temple Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,554
Land	4,119
Building and Improvements	1,435
Total Investment in Real Estate	5,554
Accumulated Depreciation and Amortization	$ 248
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Texarkana One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,791
Land	992
Building and Improvements	799
Total Investment in Real Estate	1,791
Accumulated Depreciation and Amortization	$ 219
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Texarkana Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,862
Land	1,197
Building and Improvements	665
Total Investment in Real Estate	1,862
Accumulated Depreciation and Amortization	$ 210
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Texarkana Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,316
Land	1,643
Building and Improvements	673
Total Investment in Real Estate	2,316
Accumulated Depreciation and Amortization	$ 182
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Tyler
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 8,582
Land	3,635
Building and Improvements	4,947
Total Investment in Real Estate	8,582
Accumulated Depreciation and Amortization	$ 94
Date of Initial Leasehold or Acquisition Investment	2023
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Waco One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,884
Land	894
Building and Improvements	2,990
Total Investment in Real Estate	3,884
Accumulated Depreciation and Amortization	$ 2,174
Date of Initial Leasehold or Acquisition Investment	2007
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Wake Village
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,637
Land	685
Building and Improvements	952
Total Investment in Real Estate	1,637
Accumulated Depreciation and Amortization	$ 257
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Watauga
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,771
Land	1,139
Building and Improvements	632
Total Investment in Real Estate	1,771
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Arlington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 789
Land	414
Building and Improvements	375
Total Investment in Real Estate	789
Accumulated Depreciation and Amortization	$ 117
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Arlington Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,352
Land	887
Building and Improvements	465
Total Investment in Real Estate	1,352
Accumulated Depreciation and Amortization	$ 136
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Arlington Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,560
Land	1,008
Building and Improvements	552
Total Investment in Real Estate	1,560
Accumulated Depreciation and Amortization	$ 155
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | TEXAS | Arlington Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,795
Land	1,189
Building and Improvements	606
Total Investment in Real Estate	1,795
Accumulated Depreciation and Amortization	$ 173
Date of Initial Leasehold or Acquisition Investment	2018
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 649
Land	649
Total Investment in Real Estate	$ 649
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 656
Land	409
Building and Improvements	247
Total Investment in Real Estate	656
Accumulated Depreciation and Amortization	$ 158
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 712
Land	712
Total Investment in Real Estate	$ 712
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 735
Land	735
Total Investment in Real Estate	$ 735
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Five
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,327
Land	1,327
Total Investment in Real Estate	$ 1,327
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Six
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,388
Land	1,020
Building and Improvements	368
Total Investment in Real Estate	1,388
Accumulated Depreciation and Amortization	$ 238
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Seven
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,582
Land	1,150
Building and Improvements	432
Total Investment in Real Estate	1,582
Accumulated Depreciation and Amortization	$ 255
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Alexandria Eight
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,757
Land	1,313
Building and Improvements	444
Total Investment in Real Estate	1,757
Accumulated Depreciation and Amortization	$ 277
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Annandale One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,718
Land	1,718
Total Investment in Real Estate	$ 1,718
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Arlington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,083
Land	1,083
Total Investment in Real Estate	$ 1,083
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Arlington Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,464
Land	1,085
Building and Improvements	379
Total Investment in Real Estate	1,464
Accumulated Depreciation and Amortization	$ 229
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Arlington Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,013
Land	1,516
Building and Improvements	497
Total Investment in Real Estate	2,013
Accumulated Depreciation and Amortization	$ 292
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Arlington Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,062
Land	1,603
Building and Improvements	459
Total Investment in Real Estate	2,062
Accumulated Depreciation and Amortization	$ 267
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Ashland One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 840
Cost Capitalized Subsequent to Initial Investment	0
Land	840
Building and Improvements	0
Total Investment in Real Estate	840
Accumulated Depreciation and Amortization	$ 0
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Chesapeake One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 780
Cost Capitalized Subsequent to Initial Investment	(185)
Land	398
Building and Improvements	197
Total Investment in Real Estate	595
Accumulated Depreciation and Amortization	$ 132
Date of Initial Leasehold or Acquisition Investment	1990
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Chesapeake Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,004
Cost Capitalized Subsequent to Initial Investment	110
Land	385
Building and Improvements	729
Total Investment in Real Estate	1,114
Accumulated Depreciation and Amortization	$ 718
Date of Initial Leasehold or Acquisition Investment	1990
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Emporia One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,364
Land	2,227
Building and Improvements	1,137
Total Investment in Real Estate	3,364
Accumulated Depreciation and Amortization	$ 257
Date of Initial Leasehold or Acquisition Investment	2019
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fairfax One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,825
Land	1,190
Building and Improvements	635
Total Investment in Real Estate	1,825
Accumulated Depreciation and Amortization	$ 373
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fairfax Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,077
Land	1,364
Building and Improvements	713
Total Investment in Real Estate	2,077
Accumulated Depreciation and Amortization	$ 365
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fairfax Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,348
Land	2,351
Building and Improvements	997
Total Investment in Real Estate	3,348
Accumulated Depreciation and Amortization	$ 553
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fairfax Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,454
Land	3,370
Building and Improvements	1,084
Total Investment in Real Estate	4,454
Accumulated Depreciation and Amortization	$ 602
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Farmville One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,227
Land	622
Building and Improvements	605
Total Investment in Real Estate	1,227
Accumulated Depreciation and Amortization	$ 455
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fredericksburg One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,279
Land	469
Building and Improvements	810
Total Investment in Real Estate	1,279
Accumulated Depreciation and Amortization	$ 609
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fredericksburg Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,716
Land	996
Building and Improvements	720
Total Investment in Real Estate	1,716
Accumulated Depreciation and Amortization	$ 541
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fredericksburg Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,623
Land	2,828
Building and Improvements	795
Total Investment in Real Estate	3,623
Accumulated Depreciation and Amortization	$ 598
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Glen Allen One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,037
Land	412
Building and Improvements	625
Total Investment in Real Estate	1,037
Accumulated Depreciation and Amortization	$ 470
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Glen Allen Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,077
Land	322
Building and Improvements	755
Total Investment in Real Estate	1,077
Accumulated Depreciation and Amortization	$ 568
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | King William One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,688
Land	1,068
Building and Improvements	620
Total Investment in Real Estate	1,688
Accumulated Depreciation and Amortization	$ 466
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 903
Cost Capitalized Subsequent to Initial Investment	(25)
Land	248
Building and Improvements	630
Total Investment in Real Estate	878
Accumulated Depreciation and Amortization	$ 474
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 957
Cost Capitalized Subsequent to Initial Investment	14
Land	324
Building and Improvements	647
Total Investment in Real Estate	971
Accumulated Depreciation and Amortization	$ 492
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,043
Land	223
Building and Improvements	820
Total Investment in Real Estate	1,043
Accumulated Depreciation and Amortization	$ 617
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville Four
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,125
Land	505
Building and Improvements	620
Total Investment in Real Estate	1,125
Accumulated Depreciation and Amortization	$ 466
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville Five
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,476
Land	876
Building and Improvements	600
Total Investment in Real Estate	1,476
Accumulated Depreciation and Amortization	$ 451
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Mechanicsville Six
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,677
Land	1,157
Building and Improvements	520
Total Investment in Real Estate	1,677
Accumulated Depreciation and Amortization	$ 391
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Montpelier One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,481
Cost Capitalized Subsequent to Initial Investment	(114)
Land	1,612
Building and Improvements	755
Total Investment in Real Estate	2,367
Accumulated Depreciation and Amortization	$ 568
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Petersburg One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,441
Land	816
Building and Improvements	625
Total Investment in Real Estate	1,441
Accumulated Depreciation and Amortization	$ 470
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Portsmouth One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 562
Cost Capitalized Subsequent to Initial Investment	33
Land	221
Building and Improvements	374
Total Investment in Real Estate	595
Accumulated Depreciation and Amortization	$ 374
Date of Initial Leasehold or Acquisition Investment	1990
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Richmond One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,132
Cost Capitalized Subsequent to Initial Investment	(41)
Land	506
Building and Improvements	585
Total Investment in Real Estate	1,091
Accumulated Depreciation and Amortization	$ 440
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Salem One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,337
Land	915
Building and Improvements	2,422
Total Investment in Real Estate	3,337
Accumulated Depreciation and Amortization	$ 583
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Sandston One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 722
Land	102
Building and Improvements	620
Total Investment in Real Estate	722
Accumulated Depreciation and Amortization	$ 466
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Spotsylvania One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,290
Land	490
Building and Improvements	800
Total Investment in Real Estate	1,290
Accumulated Depreciation and Amortization	$ 602
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Springfield One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,257
Land	2,969
Building and Improvements	1,288
Total Investment in Real Estate	4,257
Accumulated Depreciation and Amortization	$ 708
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Woodstock
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 611
Land	355
Building and Improvements	256
Total Investment in Real Estate	611
Accumulated Depreciation and Amortization	$ 58
Date of Initial Leasehold or Acquisition Investment	2020
Accumulated Depreciation And Amortization Description [Member] | VERMONT | Williston
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,956
Land	1,538
Building and Improvements	2,418
Total Investment in Real Estate	3,956
Accumulated Depreciation and Amortization	$ 242
Date of Initial Leasehold or Acquisition Investment	2021
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Auburn One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,023
Land	1,965
Building and Improvements	1,058
Total Investment in Real Estate	3,023
Accumulated Depreciation and Amortization	$ 536
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Bellevue One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,724
Land	886
Building and Improvements	838
Total Investment in Real Estate	1,724
Accumulated Depreciation and Amortization	$ 426
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Chehalis One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,176
Land	313
Building and Improvements	863
Total Investment in Real Estate	1,176
Accumulated Depreciation and Amortization	$ 480
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Colfax One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,800
Land	3,611
Building and Improvements	1,189
Total Investment in Real Estate	4,800
Accumulated Depreciation and Amortization	$ 605
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Federal Way One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,217
Land	2,972
Building and Improvements	1,245
Total Investment in Real Estate	4,217
Accumulated Depreciation and Amortization	$ 681
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Fife One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,181
Land	414
Building and Improvements	767
Total Investment in Real Estate	1,181
Accumulated Depreciation and Amortization	$ 422
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Kent One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,900
Land	2,066
Building and Improvements	834
Total Investment in Real Estate	2,900
Accumulated Depreciation and Amortization	$ 459
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Monroe One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,791
Land	1,555
Building and Improvements	1,236
Total Investment in Real Estate	2,791
Accumulated Depreciation and Amortization	$ 643
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Port Orchard One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,019
Land	161
Building and Improvements	1,858
Total Investment in Real Estate	2,019
Accumulated Depreciation and Amortization	$ 808
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Puyallup One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 831
Land	172
Building and Improvements	659
Total Investment in Real Estate	831
Accumulated Depreciation and Amortization	$ 389
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Puyallup Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,035
Land	465
Building and Improvements	1,570
Total Investment in Real Estate	2,035
Accumulated Depreciation and Amortization	$ 783
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Puyallup Three
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,050
Land	2,394
Building and Improvements	1,656
Total Investment in Real Estate	4,050
Accumulated Depreciation and Amortization	$ 1,031
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Renton One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,484
Land	951
Building and Improvements	533
Total Investment in Real Estate	1,484
Accumulated Depreciation and Amortization	$ 367
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Seattle One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 717
Land	193
Building and Improvements	524
Total Investment in Real Estate	717
Accumulated Depreciation and Amortization	$ 255
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Seattle Two
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,883
Land	1,222
Building and Improvements	661
Total Investment in Real Estate	1,883
Accumulated Depreciation and Amortization	$ 323
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Silverdale One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,178
Land	1,217
Building and Improvements	961
Total Investment in Real Estate	2,178
Accumulated Depreciation and Amortization	$ 528
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Snohomish One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 955
Cost Capitalized Subsequent to Initial Investment	0
Land	955
Building and Improvements	0
Total Investment in Real Estate	955
Accumulated Depreciation and Amortization	$ 0
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | South Bend One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 760
Land	121
Building and Improvements	639
Total Investment in Real Estate	760
Accumulated Depreciation and Amortization	$ 304
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Tacoma One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 671
Land	671
Total Investment in Real Estate	$ 671
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Tenino One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 936
Land	219
Building and Improvements	717
Total Investment in Real Estate	936
Accumulated Depreciation and Amortization	$ 345
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Vancouver One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,215
Land	164
Building and Improvements	1,051
Total Investment in Real Estate	1,215
Accumulated Depreciation and Amortization	$ 457
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Wilbur One
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 629
Land	153
Building and Improvements	476
Total Investment in Real Estate	629
Accumulated Depreciation and Amortization	$ 255