Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 15 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 1,514,750	$ 1,410,051	$ 1,246,588	$ 1,113,651
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,456,333
Cost Capitalized Subsequent to Initial Investment	58,417
Land	804,717
Building and Improvements	710,033
Total Investment in Real Estate	1,514,750
Accumulated Depreciation and Amortization	233,865
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	62,697
Cost Capitalized Subsequent to Initial Investment	15,300
Land	34,729
Building and Improvements	43,268
Total Investment in Real Estate	77,997
Accumulated Depreciation and Amortization	35,508
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	(11)
Land	1,205
Building and Improvements	1,190
Total Investment in Real Estate	2,395
Accumulated Depreciation and Amortization	$ 824
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	$ 172
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	$ 181
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	$ 1,861
Land	1,197
Building and Improvements	664
Total Investment in Real Estate	1,861
Accumulated Depreciation and Amortization	$ 174
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	$ 150
Date of Initial Leasehold or Acquisition Investment	2018
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	$ 2,074
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	$ 213
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	$ 150
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	$ 97
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	$ 113
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	$ 128
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	$ 1,796
Land	1,189
Building and Improvements	607
Total Investment in Real Estate	1,796
Accumulated Depreciation and Amortization	$ 143
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	$ 148
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	$ 224
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	$ 239
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	$ 261
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	$ 214
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	$ 2,014
Land	1,516
Building and Improvements	498
Total Investment in Real Estate	2,014
Accumulated Depreciation and Amortization	$ 273
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	$ 249
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
Land	840
Total Investment in Real Estate	$ 840
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	(186)
Land	398
Building and Improvements	196
Total Investment in Real Estate	594
Accumulated Depreciation and Amortization	$ 120
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	$ 708
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	$ 194
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	$ 349
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	$ 2,078
Land	1,365
Building and Improvements	713
Total Investment in Real Estate	2,078
Accumulated Depreciation and Amortization	$ 337
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	$ 515
Date of Initial Leasehold or Acquisition Investment	2013
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Fairfax Four [Member]
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	$ 560
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	$ 431
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	$ 577
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	$ 512
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	$ 566
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	$ 445
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	$ 537
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	$ 441
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	$ 448
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	$ 468
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	$ 584
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	$ 441
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	$ 427
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	$ 370
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	$ 537
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	$ 445
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Portsmouth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 562
Cost Capitalized Subsequent to Initial Investment	34
Land	222
Building and Improvements	374
Total Investment in Real Estate	596
Accumulated Depreciation and Amortization	$ 373
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	$ 416
Date of Initial Leasehold or Acquisition Investment	2005
Accumulated Depreciation And Amortization Description [Member] | VIRGINIA | Salem One [Member]
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	$ 431
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	$ 441
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
Cost Capitalized Subsequent to Initial Investment	0
Land	490
Building and Improvements	800
Total Investment in Real Estate	1,290
Accumulated Depreciation and Amortization	$ 569
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	$ 658
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	$ 612
Land	355
Building and Improvements	257
Total Investment in Real Estate	612
Accumulated Depreciation and Amortization	$ 41
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	$ 3,957
Land	1,538
Building and Improvements	2,419
Total Investment in Real Estate	3,957
Accumulated Depreciation and Amortization	$ 134
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	$ 3,022
Land	1,965
Building and Improvements	1,057
Total Investment in Real Estate	3,022
Accumulated Depreciation and Amortization	$ 474
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	$ 1,725
Land	886
Building and Improvements	839
Total Investment in Real Estate	1,725
Accumulated Depreciation and Amortization	$ 377
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	$ 424
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	$ 535
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	$ 4,218
Land	2,973
Building and Improvements	1,245
Total Investment in Real Estate	4,218
Accumulated Depreciation and Amortization	$ 601
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	$ 373
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	$ 406
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	$ 2,792
Land	1,556
Building and Improvements	1,236
Total Investment in Real Estate	2,792
Accumulated Depreciation and Amortization	$ 568
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	$ 714
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	$ 343
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	$ 692
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	$ 911
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	$ 1,485
Land	952
Building and Improvements	533
Total Investment in Real Estate	1,485
Accumulated Depreciation and Amortization	$ 324
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	$ 225
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	$ 1,884
Land	1,223
Building and Improvements	661
Total Investment in Real Estate	1,884
Accumulated Depreciation and Amortization	$ 285
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	$ 466
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
Land	955
Total Investment in Real Estate	$ 955
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	$ 268
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	$ 518
Land	518
Total Investment in Real Estate	$ 518
Date of Initial Leasehold or Acquisition Investment	2015
Accumulated Depreciation And Amortization Description [Member] | WASHINGTON | Tacoma Two
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	$ 937
Land	219
Building and Improvements	718
Total Investment in Real Estate	937
Accumulated Depreciation and Amortization	$ 305
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	$ 1,214
Land	163
Building and Improvements	1,051
Total Investment in Real Estate	1,214
Accumulated Depreciation and Amortization	$ 404
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	$ 225
Date of Initial Leasehold or Acquisition Investment	2015