Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,988,521
Buildings & Improvements, Initial Cost	5,899,135
Improvements, Initial Cost	3,727
Land, Total Cost	2,045,413
Buildings & Improvements, Total Cost	7,198,645
Total Cost	9,244,058
Accumulated Depreciation	1,996,176
Total Cost, Net of Accumulated Depreciation	7,247,882
Encumbrances	978,732
The changes in Total Real Estate Assets for the three years ended December 31, 2016 are as follows:
Balance at beginning of year	10,128,199	$ 10,335,785	$ 10,211,611
Acquisitions	130,512	226,885	632,672
Developments, improvements and expansions	148,521	305,772	249,891
Adjustments of property carrying values	(109,912)	(279,021)	(38,052)
Disposals	(1,053,262)	(461,222)	(720,337)
Balance at end of year	9,244,058	10,128,199	10,335,785
The changes in Accumulated Depreciation and Amortization for the three years ended December 31, 2016 are as follows:
Balance at beginning of year	2,062,899	1,909,585	1,823,199
Depreciation for year	317,402	309,462	309,595
Disposals	(384,125)	(156,148)	(223,209)
Balance at end of year	1,996,176	$ 2,062,899	$ 1,909,585
Goodyear, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	11,859
Buildings & Improvements, Initial Cost	42,882
Improvements, Initial Cost	0
Land, Total Cost	11,859
Buildings & Improvements, Total Cost	42,882
Total Cost	54,741
Accumulated Depreciation	1,428
Total Cost, Net of Accumulated Depreciation	53,313
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2016
Phoenix, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 18,701
Buildings & Improvements, Initial Cost	18,811
Improvements, Initial Cost	118
Land, Total Cost	18,701
Buildings & Improvements, Total Cost	22,084
Total Cost	40,785
Accumulated Depreciation	7,190
Total Cost, Net of Accumulated Depreciation	33,595
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1999
Phoenix, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,352
Buildings & Improvements, Initial Cost	22,813
Improvements, Initial Cost	1,601
Land, Total Cost	15,352
Buildings & Improvements, Total Cost	27,766
Total Cost	43,118
Accumulated Depreciation	15,487
Total Cost, Net of Accumulated Depreciation	27,631
Encumbrances	$ 30,000
Date of Construction (C) Acquisition (A)	2003
Phoenix, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,090
Buildings & Improvements, Initial Cost	36,880
Improvements, Initial Cost	0
Land, Total Cost	15,090
Buildings & Improvements, Total Cost	39,036
Total Cost	54,126
Accumulated Depreciation	7,386
Total Cost, Net of Accumulated Depreciation	46,740
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Phoenix, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 34,201
Buildings & Improvements, Initial Cost	88,475
Improvements, Initial Cost	0
Land, Total Cost	34,201
Buildings & Improvements, Total Cost	102,210
Total Cost	136,411
Accumulated Depreciation	15,927
Total Cost, Net of Accumulated Depreciation	120,484
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Tucson, AZ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 19,298
Buildings & Improvements, Initial Cost	94,117
Improvements, Initial Cost	0
Land, Total Cost	19,088
Buildings & Improvements, Total Cost	97,151
Total Cost	116,239
Accumulated Depreciation	15,206
Total Cost, Net of Accumulated Depreciation	101,033
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Russellville, AR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 606
Buildings & Improvements, Initial Cost	13,391
Improvements, Initial Cost	0
Land, Total Cost	606
Buildings & Improvements, Total Cost	21,426
Total Cost	22,032
Accumulated Depreciation	12,090
Total Cost, Net of Accumulated Depreciation	9,942
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1994
Buena Park, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 27,269
Buildings & Improvements, Initial Cost	21,427
Improvements, Initial Cost	0
Land, Total Cost	27,269
Buildings & Improvements, Total Cost	21,957
Total Cost	49,226
Accumulated Depreciation	1,364
Total Cost, Net of Accumulated Depreciation	47,862
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2015
Fontana, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 23,861
Buildings & Improvements, Initial Cost	57,931
Improvements, Initial Cost	0
Land, Total Cost	23,861
Buildings & Improvements, Total Cost	58,762
Total Cost	82,623
Accumulated Depreciation	4,583
Total Cost, Net of Accumulated Depreciation	78,040
Encumbrances	$ 14,068
Date of Construction (C) Acquisition (A)	2014
Long Beach, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 0
Buildings & Improvements, Initial Cost	147,918
Improvements, Initial Cost	0
Land, Total Cost	0
Buildings & Improvements, Total Cost	193,505
Total Cost	193,505
Accumulated Depreciation	60,980
Total Cost, Net of Accumulated Depreciation	132,525
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Oakland, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,361
Buildings & Improvements, Initial Cost	33,538
Improvements, Initial Cost	0
Land, Total Cost	4,361
Buildings & Improvements, Total Cost	33,538
Total Cost	37,899
Accumulated Depreciation	4,174
Total Cost, Net of Accumulated Depreciation	33,725
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Roseville, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 23,574
Buildings & Improvements, Initial Cost	67,031
Improvements, Initial Cost	0
Land, Total Cost	23,574
Buildings & Improvements, Total Cost	67,658
Total Cost	91,232
Accumulated Depreciation	5,920
Total Cost, Net of Accumulated Depreciation	85,312
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
San Francisco, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,464
Buildings & Improvements, Initial Cost	25,730
Improvements, Initial Cost	0
Land, Total Cost	10,464
Buildings & Improvements, Total Cost	26,031
Total Cost	36,495
Accumulated Depreciation	10,271
Total Cost, Net of Accumulated Depreciation	26,224
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2002
Valencia, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 0
Buildings & Improvements, Initial Cost	15,784
Improvements, Initial Cost	0
Land, Total Cost	0
Buildings & Improvements, Total Cost	18,015
Total Cost	18,015
Accumulated Depreciation	14,304
Total Cost, Net of Accumulated Depreciation	3,711
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2006
Vista, CA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 12,677
Buildings & Improvements, Initial Cost	47,145
Improvements, Initial Cost	0
Land, Total Cost	12,677
Buildings & Improvements, Total Cost	48,712
Total Cost	61,389
Accumulated Depreciation	3,671
Total Cost, Net of Accumulated Depreciation	57,718
Encumbrances	$ 33,200
Date of Construction (C) Acquisition (A)	2014
Aurora, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,816
Buildings & Improvements, Initial Cost	20,798
Improvements, Initial Cost	0
Land, Total Cost	4,816
Buildings & Improvements, Total Cost	22,021
Total Cost	26,837
Accumulated Depreciation	2,471
Total Cost, Net of Accumulated Depreciation	24,366
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Centennial, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,833
Buildings & Improvements, Initial Cost	35,550
Improvements, Initial Cost	0
Land, Total Cost	8,082
Buildings & Improvements, Total Cost	65,592
Total Cost	73,674
Accumulated Depreciation	35,164
Total Cost, Net of Accumulated Depreciation	38,510
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1997
Colorado Springs, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,001
Buildings & Improvements, Initial Cost	47,671
Improvements, Initial Cost	0
Land, Total Cost	9,001
Buildings & Improvements, Total Cost	54,894
Total Cost	63,895
Accumulated Depreciation	7,203
Total Cost, Net of Accumulated Depreciation	56,692
Encumbrances	$ 19,368
Date of Construction (C) Acquisition (A)	2011
Denver, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,141
Buildings & Improvements, Initial Cost	3,593
Improvements, Initial Cost	0
Land, Total Cost	1,141
Buildings & Improvements, Total Cost	6,534
Total Cost	7,675
Accumulated Depreciation	2,583
Total Cost, Net of Accumulated Depreciation	5,092
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2001
Denver, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 20,733
Buildings & Improvements, Initial Cost	22,818
Improvements, Initial Cost	0
Land, Total Cost	20,804
Buildings & Improvements, Total Cost	29,285
Total Cost	50,089
Accumulated Depreciation	12,142
Total Cost, Net of Accumulated Depreciation	37,947
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Parker, CO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,632
Buildings & Improvements, Initial Cost	38,256
Improvements, Initial Cost	0
Land, Total Cost	4,632
Buildings & Improvements, Total Cost	39,485
Total Cost	44,117
Accumulated Depreciation	4,313
Total Cost, Net of Accumulated Depreciation	39,804
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Guilford, CT [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,588
Buildings & Improvements, Initial Cost	41,892
Improvements, Initial Cost	0
Land, Total Cost	6,209
Buildings & Improvements, Total Cost	60,174
Total Cost	66,383
Accumulated Depreciation	1,848
Total Cost, Net of Accumulated Depreciation	64,535
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2015
Plainville, CT [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 17,528
Buildings & Improvements, Initial Cost	59,777
Improvements, Initial Cost	0
Land, Total Cost	17,528
Buildings & Improvements, Total Cost	67,176
Total Cost	84,704
Accumulated Depreciation	7,875
Total Cost, Net of Accumulated Depreciation	76,829
Encumbrances	$ 45,610
Date of Construction (C) Acquisition (A)	2013
Windsor Court, CT [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,090
Buildings & Improvements, Initial Cost	11,745
Improvements, Initial Cost	0
Land, Total Cost	6,090
Buildings & Improvements, Total Cost	12,263
Total Cost	18,353
Accumulated Depreciation	3,851
Total Cost, Net of Accumulated Depreciation	14,502
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Bradenton, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,766
Buildings & Improvements, Initial Cost	31,203
Improvements, Initial Cost	0
Land, Total Cost	8,880
Buildings & Improvements, Total Cost	34,495
Total Cost	43,375
Accumulated Depreciation	10,874
Total Cost, Net of Accumulated Depreciation	32,501
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Brandon, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 0
Buildings & Improvements, Initial Cost	4,111
Improvements, Initial Cost	0
Land, Total Cost	0
Buildings & Improvements, Total Cost	7,512
Total Cost	7,512
Accumulated Depreciation	5,474
Total Cost, Net of Accumulated Depreciation	2,038
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1972
Brandon, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,713
Buildings & Improvements, Initial Cost	26,802
Improvements, Initial Cost	0
Land, Total Cost	7,713
Buildings & Improvements, Total Cost	32,433
Total Cost	40,146
Accumulated Depreciation	5,577
Total Cost, Net of Accumulated Depreciation	34,569
Encumbrances	$ 9,014
Date of Construction (C) Acquisition (A)	2009
Homestead, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 23,390
Buildings & Improvements, Initial Cost	59,639
Improvements, Initial Cost	0
Land, Total Cost	29,409
Buildings & Improvements, Total Cost	62,960
Total Cost	92,369
Accumulated Depreciation	13,848
Total Cost, Net of Accumulated Depreciation	78,521
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2008
Miami, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 11,626
Buildings & Improvements, Initial Cost	30,457
Improvements, Initial Cost	0
Land, Total Cost	34,943
Buildings & Improvements, Total Cost	118,513
Total Cost	153,456
Accumulated Depreciation	33,759
Total Cost, Net of Accumulated Depreciation	119,697
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2006
Naples, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,172
Buildings & Improvements, Initial Cost	39,342
Improvements, Initial Cost	0
Land, Total Cost	10,172
Buildings & Improvements, Total Cost	39,630
Total Cost	49,802
Accumulated Depreciation	4,468
Total Cost, Net of Accumulated Depreciation	45,334
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Orlando, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,169
Buildings & Improvements, Initial Cost	23,473
Improvements, Initial Cost	0
Land, Total Cost	9,169
Buildings & Improvements, Total Cost	23,591
Total Cost	32,760
Accumulated Depreciation	1,471
Total Cost, Net of Accumulated Depreciation	31,289
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2015
Orlando, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 23,082
Buildings & Improvements, Initial Cost	44,360
Improvements, Initial Cost	0
Land, Total Cost	23,082
Buildings & Improvements, Total Cost	44,376
Total Cost	67,458
Accumulated Depreciation	1,620
Total Cost, Net of Accumulated Depreciation	65,838
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2015
Orlando, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,528
Buildings & Improvements, Initial Cost	56,684
Improvements, Initial Cost	0
Land, Total Cost	8,528
Buildings & Improvements, Total Cost	56,684
Total Cost	65,212
Accumulated Depreciation	1,330
Total Cost, Net of Accumulated Depreciation	63,882
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2016
Palm Harbor, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,137
Buildings & Improvements, Initial Cost	4,089
Improvements, Initial Cost	0
Land, Total Cost	1,137
Buildings & Improvements, Total Cost	5,060
Total Cost	6,197
Accumulated Depreciation	3,327
Total Cost, Net of Accumulated Depreciation	2,870
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1995
Plant City, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,304
Buildings & Improvements, Initial Cost	24,875
Improvements, Initial Cost	0
Land, Total Cost	4,304
Buildings & Improvements, Total Cost	30,198
Total Cost	34,502
Accumulated Depreciation	3,859
Total Cost, Net of Accumulated Depreciation	30,643
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Plantation, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 21,729
Buildings & Improvements, Initial Cost	37,331
Improvements, Initial Cost	0
Land, Total Cost	22,112
Buildings & Improvements, Total Cost	96,427
Total Cost	118,539
Accumulated Depreciation	32,717
Total Cost, Net of Accumulated Depreciation	85,822
Encumbrances	$ 44,212
Date of Construction (C) Acquisition (A)	2007
Spring Hill, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,084
Buildings & Improvements, Initial Cost	4,816
Improvements, Initial Cost	266
Land, Total Cost	2,096
Buildings & Improvements, Total Cost	12,467
Total Cost	14,563
Accumulated Depreciation	8,629
Total Cost, Net of Accumulated Depreciation	5,934
Encumbrances	$ 1,634
Date of Construction (C) Acquisition (A)	1988
Tallahassee, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,881
Buildings & Improvements, Initial Cost	2,956
Improvements, Initial Cost	0
Land, Total Cost	1,311
Buildings & Improvements, Total Cost	5,799
Total Cost	7,110
Accumulated Depreciation	2,813
Total Cost, Net of Accumulated Depreciation	4,297
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Tampa, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,699
Buildings & Improvements, Initial Cost	3,338
Improvements, Initial Cost	0
Land, Total Cost	1,429
Buildings & Improvements, Total Cost	3,018
Total Cost	4,447
Accumulated Depreciation	1,062
Total Cost, Net of Accumulated Depreciation	3,385
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Tampa, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,124
Buildings & Improvements, Initial Cost	20,082
Improvements, Initial Cost	0
Land, Total Cost	4,124
Buildings & Improvements, Total Cost	21,705
Total Cost	25,829
Accumulated Depreciation	3,026
Total Cost, Net of Accumulated Depreciation	22,803
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Tarpon Springs, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 146
Buildings & Improvements, Initial Cost	7,382
Improvements, Initial Cost	81
Land, Total Cost	146
Buildings & Improvements, Total Cost	9,979
Total Cost	10,125
Accumulated Depreciation	7,701
Total Cost, Net of Accumulated Depreciation	2,424
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1974
Tequesta, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,108
Buildings & Improvements, Initial Cost	7,400
Improvements, Initial Cost	0
Land, Total Cost	1,690
Buildings & Improvements, Total Cost	12,485
Total Cost	14,175
Accumulated Depreciation	3,618
Total Cost, Net of Accumulated Depreciation	10,557
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Valrico, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,282
Buildings & Improvements, Initial Cost	12,190
Improvements, Initial Cost	0
Land, Total Cost	2,466
Buildings & Improvements, Total Cost	16,377
Total Cost	18,843
Accumulated Depreciation	5,490
Total Cost, Net of Accumulated Depreciation	13,353
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Winter Garden, FL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 38,945
Buildings & Improvements, Initial Cost	130,382
Improvements, Initial Cost	0
Land, Total Cost	38,945
Buildings & Improvements, Total Cost	133,492
Total Cost	172,437
Accumulated Depreciation	16,450
Total Cost, Net of Accumulated Depreciation	155,987
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Atlanta, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 14,078
Buildings & Improvements, Initial Cost	41,050
Improvements, Initial Cost	0
Land, Total Cost	14,078
Buildings & Improvements, Total Cost	43,879
Total Cost	57,957
Accumulated Depreciation	9,904
Total Cost, Net of Accumulated Depreciation	48,053
Encumbrances	$ 41,799
Date of Construction (C) Acquisition (A)	2009
Cumming, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 14,249
Buildings & Improvements, Initial Cost	23,653
Improvements, Initial Cost	0
Land, Total Cost	14,249
Buildings & Improvements, Total Cost	25,804
Total Cost	40,053
Accumulated Depreciation	11,843
Total Cost, Net of Accumulated Depreciation	28,210
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Cumming, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,851
Buildings & Improvements, Initial Cost	49,659
Improvements, Initial Cost	0
Land, Total Cost	6,851
Buildings & Improvements, Total Cost	49,848
Total Cost	56,699
Accumulated Depreciation	6,600
Total Cost, Net of Accumulated Depreciation	50,099
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Douglasville, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,812
Buildings & Improvements, Initial Cost	24,645
Improvements, Initial Cost	0
Land, Total Cost	6,812
Buildings & Improvements, Total Cost	25,571
Total Cost	32,383
Accumulated Depreciation	3,260
Total Cost, Net of Accumulated Depreciation	29,123
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Lithonia, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,477
Buildings & Improvements, Initial Cost	3,476
Improvements, Initial Cost	0
Land, Total Cost	1,612
Buildings & Improvements, Total Cost	2,506
Total Cost	4,118
Accumulated Depreciation	404
Total Cost, Net of Accumulated Depreciation	3,714
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Lithonia, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,546
Buildings & Improvements, Initial Cost	5,951
Improvements, Initial Cost	0
Land, Total Cost	2,214
Buildings & Improvements, Total Cost	3,291
Total Cost	5,505
Accumulated Depreciation	742
Total Cost, Net of Accumulated Depreciation	4,763
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Marietta, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,425
Buildings & Improvements, Initial Cost	27,737
Improvements, Initial Cost	0
Land, Total Cost	8,380
Buildings & Improvements, Total Cost	29,112
Total Cost	37,492
Accumulated Depreciation	7,045
Total Cost, Net of Accumulated Depreciation	30,447
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2009
Newnan, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,858
Buildings & Improvements, Initial Cost	15,248
Improvements, Initial Cost	0
Land, Total Cost	2,651
Buildings & Improvements, Total Cost	15,885
Total Cost	18,536
Accumulated Depreciation	5,734
Total Cost, Net of Accumulated Depreciation	12,802
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Roswell, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,566
Buildings & Improvements, Initial Cost	15,005
Improvements, Initial Cost	0
Land, Total Cost	7,894
Buildings & Improvements, Total Cost	25,955
Total Cost	33,849
Accumulated Depreciation	9,840
Total Cost, Net of Accumulated Depreciation	24,009
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Snellville, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,185
Buildings & Improvements, Initial Cost	51,815
Improvements, Initial Cost	0
Land, Total Cost	10,342
Buildings & Improvements, Total Cost	57,052
Total Cost	67,394
Accumulated Depreciation	18,440
Total Cost, Net of Accumulated Depreciation	48,954
Encumbrances	$ 20,430
Date of Construction (C) Acquisition (A)	2007
Suwanee, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 13,479
Buildings & Improvements, Initial Cost	23,923
Improvements, Initial Cost	0
Land, Total Cost	13,335
Buildings & Improvements, Total Cost	32,931
Total Cost	46,266
Accumulated Depreciation	14,340
Total Cost, Net of Accumulated Depreciation	31,926
Encumbrances	$ 23,528
Date of Construction (C) Acquisition (A)	2003
Warner Robins, GA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,729
Buildings & Improvements, Initial Cost	7,459
Improvements, Initial Cost	0
Land, Total Cost	5,729
Buildings & Improvements, Total Cost	8,143
Total Cost	13,872
Accumulated Depreciation	3,814
Total Cost, Net of Accumulated Depreciation	10,058
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Meridian, ID [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 24,591
Buildings & Improvements, Initial Cost	31,779
Improvements, Initial Cost	0
Land, Total Cost	24,841
Buildings & Improvements, Total Cost	66,975
Total Cost	91,816
Accumulated Depreciation	28,263
Total Cost, Net of Accumulated Depreciation	63,553
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2001
Nampa, ID [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,395
Buildings & Improvements, Initial Cost	8,563
Improvements, Initial Cost	0
Land, Total Cost	8,426
Buildings & Improvements, Total Cost	24,241
Total Cost	32,667
Accumulated Depreciation	18,078
Total Cost, Net of Accumulated Depreciation	14,589
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Chicago, IL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 22,642
Buildings & Improvements, Initial Cost	82,754
Improvements, Initial Cost	0
Land, Total Cost	22,642
Buildings & Improvements, Total Cost	83,025
Total Cost	105,667
Accumulated Depreciation	6,925
Total Cost, Net of Accumulated Depreciation	98,742
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
McHenry, IL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,294
Buildings & Improvements, Initial Cost	5,251
Improvements, Initial Cost	0
Land, Total Cost	14,255
Buildings & Improvements, Total Cost	62,681
Total Cost	76,936
Accumulated Depreciation	17,872
Total Cost, Net of Accumulated Depreciation	59,064
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2006
Schaumburg, IL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 27,466
Buildings & Improvements, Initial Cost	84,679
Improvements, Initial Cost	0
Land, Total Cost	27,466
Buildings & Improvements, Total Cost	94,523
Total Cost	121,989
Accumulated Depreciation	10,275
Total Cost, Net of Accumulated Depreciation	111,714
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Tinley Park, IL [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,120
Buildings & Improvements, Initial Cost	37,496
Improvements, Initial Cost	0
Land, Total Cost	9,120
Buildings & Improvements, Total Cost	50,821
Total Cost	59,941
Accumulated Depreciation	9,348
Total Cost, Net of Accumulated Depreciation	50,593
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Evansville, IN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,964
Buildings & Improvements, Initial Cost	18,764
Improvements, Initial Cost	0
Land, Total Cost	8,964
Buildings & Improvements, Total Cost	18,835
Total Cost	27,799
Accumulated Depreciation	6,064
Total Cost, Net of Accumulated Depreciation	21,735
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Cedar Rapids, IA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,219
Buildings & Improvements, Initial Cost	12,697
Improvements, Initial Cost	0
Land, Total Cost	4,219
Buildings & Improvements, Total Cost	14,441
Total Cost	18,660
Accumulated Depreciation	8,472
Total Cost, Net of Accumulated Depreciation	10,188
Encumbrances	$ 3,412
Date of Construction (C) Acquisition (A)	1998
Merriam, KS [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,043
Buildings & Improvements, Initial Cost	55,028
Improvements, Initial Cost	0
Land, Total Cost	15,043
Buildings & Improvements, Total Cost	56,179
Total Cost	71,222
Accumulated Depreciation	5,844
Total Cost, Net of Accumulated Depreciation	65,378
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Bowie, MD [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,739
Buildings & Improvements, Initial Cost	14,301
Improvements, Initial Cost	0
Land, Total Cost	5,744
Buildings & Improvements, Total Cost	14,497
Total Cost	20,241
Accumulated Depreciation	4,636
Total Cost, Net of Accumulated Depreciation	15,605
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Salisbury, MD [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,070
Buildings & Improvements, Initial Cost	12,495
Improvements, Initial Cost	277
Land, Total Cost	2,071
Buildings & Improvements, Total Cost	15,295
Total Cost	17,366
Accumulated Depreciation	7,416
Total Cost, Net of Accumulated Depreciation	9,950
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1999
Everett, MA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,311
Buildings & Improvements, Initial Cost	44,647
Improvements, Initial Cost	0
Land, Total Cost	9,462
Buildings & Improvements, Total Cost	54,984
Total Cost	64,446
Accumulated Depreciation	25,556
Total Cost, Net of Accumulated Depreciation	38,890
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2001
Framingham, MA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 75,675
Buildings & Improvements, Initial Cost	191,594
Improvements, Initial Cost	0
Land, Total Cost	75,675
Buildings & Improvements, Total Cost	205,090
Total Cost	280,765
Accumulated Depreciation	22,621
Total Cost, Net of Accumulated Depreciation	258,144
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Grand Rapids, MI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,380
Buildings & Improvements, Initial Cost	17,323
Improvements, Initial Cost	0
Land, Total Cost	3,380
Buildings & Improvements, Total Cost	26,781
Total Cost	30,161
Accumulated Depreciation	14,804
Total Cost, Net of Accumulated Depreciation	15,357
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1995
Grandville, MI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,483
Buildings & Improvements, Initial Cost	18,933
Improvements, Initial Cost	0
Land, Total Cost	5,494
Buildings & Improvements, Total Cost	17,647
Total Cost	23,141
Accumulated Depreciation	2,665
Total Cost, Net of Accumulated Depreciation	20,476
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Lansing, MI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,598
Buildings & Improvements, Initial Cost	6,999
Improvements, Initial Cost	0
Land, Total Cost	2,289
Buildings & Improvements, Total Cost	17,263
Total Cost	19,552
Accumulated Depreciation	5,462
Total Cost, Net of Accumulated Depreciation	14,090
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Coon Rapids, MN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 25,692
Buildings & Improvements, Initial Cost	106,300
Improvements, Initial Cost	0
Land, Total Cost	25,692
Buildings & Improvements, Total Cost	109,970
Total Cost	135,662
Accumulated Depreciation	13,016
Total Cost, Net of Accumulated Depreciation	122,646
Encumbrances	$ 56,382
Date of Construction (C) Acquisition (A)	2013
Maple Grove, MN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,917
Buildings & Improvements, Initial Cost	23,954
Improvements, Initial Cost	0
Land, Total Cost	8,917
Buildings & Improvements, Total Cost	27,346
Total Cost	36,263
Accumulated Depreciation	4,974
Total Cost, Net of Accumulated Depreciation	31,289
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2011
St. Paul, MN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,150
Buildings & Improvements, Initial Cost	21,558
Improvements, Initial Cost	0
Land, Total Cost	7,150
Buildings & Improvements, Total Cost	23,074
Total Cost	30,224
Accumulated Depreciation	4,153
Total Cost, Net of Accumulated Depreciation	26,071
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Gulfport, MS [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 0
Buildings & Improvements, Initial Cost	36,370
Improvements, Initial Cost	0
Land, Total Cost	0
Buildings & Improvements, Total Cost	57,585
Total Cost	57,585
Accumulated Depreciation	24,267
Total Cost, Net of Accumulated Depreciation	33,318
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Jackson, MS [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,190
Buildings & Improvements, Initial Cost	6,783
Improvements, Initial Cost	0
Land, Total Cost	3,212
Buildings & Improvements, Total Cost	6,783
Total Cost	9,995
Accumulated Depreciation	3,414
Total Cost, Net of Accumulated Depreciation	6,581
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Tupelo, MS [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,213
Buildings & Improvements, Initial Cost	14,979
Improvements, Initial Cost	0
Land, Total Cost	2,213
Buildings & Improvements, Total Cost	19,341
Total Cost	21,554
Accumulated Depreciation	12,678
Total Cost, Net of Accumulated Depreciation	8,876
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1994
Arnold, MO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 892
Buildings & Improvements, Initial Cost	5,283
Improvements, Initial Cost	0
Land, Total Cost	107
Buildings & Improvements, Total Cost	2,664
Total Cost	2,771
Accumulated Depreciation	1,921
Total Cost, Net of Accumulated Depreciation	850
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Brentwood, MO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,018
Buildings & Improvements, Initial Cost	32,053
Improvements, Initial Cost	0
Land, Total Cost	10,018
Buildings & Improvements, Total Cost	36,787
Total Cost	46,805
Accumulated Depreciation	18,793
Total Cost, Net of Accumulated Depreciation	28,012
Encumbrances	$ 29,862
Date of Construction (C) Acquisition (A)	1998
Independence, MO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,011
Buildings & Improvements, Initial Cost	45,752
Improvements, Initial Cost	0
Land, Total Cost	5,011
Buildings & Improvements, Total Cost	48,169
Total Cost	53,180
Accumulated Depreciation	7,168
Total Cost, Net of Accumulated Depreciation	46,012
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Springfield, MO [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 0
Buildings & Improvements, Initial Cost	2,048
Improvements, Initial Cost	0
Land, Total Cost	0
Buildings & Improvements, Total Cost	2,239
Total Cost	2,239
Accumulated Depreciation	1,255
Total Cost, Net of Accumulated Depreciation	984
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1998
Seabrook, NH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 18,032
Buildings & Improvements, Initial Cost	68,663
Improvements, Initial Cost	0
Land, Total Cost	18,032
Buildings & Improvements, Total Cost	69,189
Total Cost	87,221
Accumulated Depreciation	4,606
Total Cost, Net of Accumulated Depreciation	82,615
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
East Hanover, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,847
Buildings & Improvements, Initial Cost	23,798
Improvements, Initial Cost	0
Land, Total Cost	3,847
Buildings & Improvements, Total Cost	24,959
Total Cost	28,806
Accumulated Depreciation	7,844
Total Cost, Net of Accumulated Depreciation	20,962
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Edgewater, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,714
Buildings & Improvements, Initial Cost	30,473
Improvements, Initial Cost	0
Land, Total Cost	7,714
Buildings & Improvements, Total Cost	31,181
Total Cost	38,895
Accumulated Depreciation	9,808
Total Cost, Net of Accumulated Depreciation	29,087
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Freehold, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,460
Buildings & Improvements, Initial Cost	2,475
Improvements, Initial Cost	0
Land, Total Cost	3,166
Buildings & Improvements, Total Cost	3,416
Total Cost	6,582
Accumulated Depreciation	882
Total Cost, Net of Accumulated Depreciation	5,700
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Hamilton, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,039
Buildings & Improvements, Initial Cost	49,896
Improvements, Initial Cost	0
Land, Total Cost	11,774
Buildings & Improvements, Total Cost	86,198
Total Cost	97,972
Accumulated Depreciation	34,800
Total Cost, Net of Accumulated Depreciation	63,172
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Mays Landing, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 49,033
Buildings & Improvements, Initial Cost	107,230
Improvements, Initial Cost	0
Land, Total Cost	49,033
Buildings & Improvements, Total Cost	117,460
Total Cost	166,493
Accumulated Depreciation	48,415
Total Cost, Net of Accumulated Depreciation	118,078
Encumbrances	$ 57,678
Date of Construction (C) Acquisition (A)	2004
Mays Landing, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 36,224
Buildings & Improvements, Initial Cost	56,949
Improvements, Initial Cost	0
Land, Total Cost	36,224
Buildings & Improvements, Total Cost	63,417
Total Cost	99,641
Accumulated Depreciation	25,977
Total Cost, Net of Accumulated Depreciation	73,664
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2004
Princeton, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 13,448
Buildings & Improvements, Initial Cost	74,249
Improvements, Initial Cost	0
Land, Total Cost	14,464
Buildings & Improvements, Total Cost	99,103
Total Cost	113,567
Accumulated Depreciation	51,527
Total Cost, Net of Accumulated Depreciation	62,040
Encumbrances	$ 54,931
Date of Construction (C) Acquisition (A)	1997
Union, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,650
Buildings & Improvements, Initial Cost	15,689
Improvements, Initial Cost	0
Land, Total Cost	7,650
Buildings & Improvements, Total Cost	25,015
Total Cost	32,665
Accumulated Depreciation	7,663
Total Cost, Net of Accumulated Depreciation	25,002
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
West Long Branch, NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 14,131
Buildings & Improvements, Initial Cost	51,982
Improvements, Initial Cost	0
Land, Total Cost	14,131
Buildings & Improvements, Total Cost	65,487
Total Cost	79,618
Accumulated Depreciation	23,347
Total Cost, Net of Accumulated Depreciation	56,271
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2004
Horseheads, NY [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 829
Buildings & Improvements, Initial Cost	3,630
Improvements, Initial Cost	0
Land, Total Cost	4,631
Buildings & Improvements, Total Cost	27,085
Total Cost	31,716
Accumulated Depreciation	8,165
Total Cost, Net of Accumulated Depreciation	23,551
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2008
Apex, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,576
Buildings & Improvements, Initial Cost	43,619
Improvements, Initial Cost	0
Land, Total Cost	10,521
Buildings & Improvements, Total Cost	56,300
Total Cost	66,821
Accumulated Depreciation	18,294
Total Cost, Net of Accumulated Depreciation	48,527
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2006
Charlotte, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 27,707
Buildings & Improvements, Initial Cost	45,021
Improvements, Initial Cost	0
Land, Total Cost	27,707
Buildings & Improvements, Total Cost	50,325
Total Cost	78,032
Accumulated Depreciation	9,660
Total Cost, Net of Accumulated Depreciation	68,372
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2011
Charlotte, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 11,224
Buildings & Improvements, Initial Cost	82,124
Improvements, Initial Cost	0
Land, Total Cost	11,224
Buildings & Improvements, Total Cost	90,937
Total Cost	102,161
Accumulated Depreciation	13,857
Total Cost, Net of Accumulated Depreciation	88,304
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Charlotte, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,600
Buildings & Improvements, Initial Cost	30,392
Improvements, Initial Cost	0
Land, Total Cost	6,188
Buildings & Improvements, Total Cost	45,894
Total Cost	52,082
Accumulated Depreciation	4,170
Total Cost, Net of Accumulated Depreciation	47,912
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Cornelius, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,382
Buildings & Improvements, Initial Cost	15,184
Improvements, Initial Cost	0
Land, Total Cost	4,382
Buildings & Improvements, Total Cost	20,740
Total Cost	25,122
Accumulated Depreciation	7,529
Total Cost, Net of Accumulated Depreciation	17,593
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Greensboro, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,153
Buildings & Improvements, Initial Cost	9,455
Improvements, Initial Cost	0
Land, Total Cost	3,153
Buildings & Improvements, Total Cost	10,077
Total Cost	13,230
Accumulated Depreciation	3,289
Total Cost, Net of Accumulated Depreciation	9,941
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Mooresville, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 14,369
Buildings & Improvements, Initial Cost	43,688
Improvements, Initial Cost	0
Land, Total Cost	14,369
Buildings & Improvements, Total Cost	47,518
Total Cost	61,887
Accumulated Depreciation	19,057
Total Cost, Net of Accumulated Depreciation	42,830
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2004
Raleigh, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,728
Buildings & Improvements, Initial Cost	10,665
Improvements, Initial Cost	0
Land, Total Cost	413
Buildings & Improvements, Total Cost	4,424
Total Cost	4,837
Accumulated Depreciation	2,944
Total Cost, Net of Accumulated Depreciation	1,893
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Raleigh, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,317
Buildings & Improvements, Initial Cost	35,411
Improvements, Initial Cost	0
Land, Total Cost	3,317
Buildings & Improvements, Total Cost	38,105
Total Cost	41,422
Accumulated Depreciation	5,670
Total Cost, Net of Accumulated Depreciation	35,752
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Wilmington, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,529
Buildings & Improvements, Initial Cost	18,551
Improvements, Initial Cost	1,183
Land, Total Cost	5,529
Buildings & Improvements, Total Cost	37,733
Total Cost	43,262
Accumulated Depreciation	25,610
Total Cost, Net of Accumulated Depreciation	17,652
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1989
Winston Salem, NC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,156
Buildings & Improvements, Initial Cost	15,010
Improvements, Initial Cost	0
Land, Total Cost	7,156
Buildings & Improvements, Total Cost	15,010
Total Cost	22,166
Accumulated Depreciation	4,872
Total Cost, Net of Accumulated Depreciation	17,294
Encumbrances	$ 997
Date of Construction (C) Acquisition (A)	2007
Alliance, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 812
Buildings & Improvements, Initial Cost	16,244
Improvements, Initial Cost	0
Land, Total Cost	812
Buildings & Improvements, Total Cost	16,244
Total Cost	17,056
Accumulated Depreciation	5,256
Total Cost, Net of Accumulated Depreciation	11,800
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Aurora, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 832
Buildings & Improvements, Initial Cost	7,560
Improvements, Initial Cost	0
Land, Total Cost	1,592
Buildings & Improvements, Total Cost	14,245
Total Cost	15,837
Accumulated Depreciation	8,221
Total Cost, Net of Accumulated Depreciation	7,616
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1995
Boardman, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,152
Buildings & Improvements, Initial Cost	27,983
Improvements, Initial Cost	0
Land, Total Cost	8,152
Buildings & Improvements, Total Cost	31,322
Total Cost	39,474
Accumulated Depreciation	17,872
Total Cost, Net of Accumulated Depreciation	21,602
Encumbrances	$ 23,528
Date of Construction (C) Acquisition (A)	1997
Cincinnati, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 19,572
Buildings & Improvements, Initial Cost	54,495
Improvements, Initial Cost	0
Land, Total Cost	19,572
Buildings & Improvements, Total Cost	66,593
Total Cost	86,165
Accumulated Depreciation	4,037
Total Cost, Net of Accumulated Depreciation	82,128
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
Columbus, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 12,922
Buildings & Improvements, Initial Cost	46,006
Improvements, Initial Cost	0
Land, Total Cost	14,078
Buildings & Improvements, Total Cost	61,983
Total Cost	76,061
Accumulated Depreciation	33,481
Total Cost, Net of Accumulated Depreciation	42,580
Encumbrances	$ 48,459
Date of Construction (C) Acquisition (A)	1998
Columbus, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 18,716
Buildings & Improvements, Initial Cost	64,617
Improvements, Initial Cost	0
Land, Total Cost	20,666
Buildings & Improvements, Total Cost	70,876
Total Cost	91,542
Accumulated Depreciation	12,005
Total Cost, Net of Accumulated Depreciation	79,537
Encumbrances	$ 42,345
Date of Construction (C) Acquisition (A)	2011
Dublin, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,609
Buildings & Improvements, Initial Cost	11,546
Improvements, Initial Cost	0
Land, Total Cost	3,609
Buildings & Improvements, Total Cost	15,088
Total Cost	18,697
Accumulated Depreciation	8,363
Total Cost, Net of Accumulated Depreciation	10,334
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1998
Hamilton, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,805
Buildings & Improvements, Initial Cost	8,502
Improvements, Initial Cost	0
Land, Total Cost	1,335
Buildings & Improvements, Total Cost	6,478
Total Cost	7,813
Accumulated Depreciation	643
Total Cost, Net of Accumulated Depreciation	7,170
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
Huber Hts, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 757
Buildings & Improvements, Initial Cost	14,469
Improvements, Initial Cost	0
Land, Total Cost	757
Buildings & Improvements, Total Cost	28,019
Total Cost	28,776
Accumulated Depreciation	18,277
Total Cost, Net of Accumulated Depreciation	10,499
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1993
Macedonia, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 11,582
Buildings & Improvements, Initial Cost	34,323
Improvements, Initial Cost	0
Land, Total Cost	11,582
Buildings & Improvements, Total Cost	38,310
Total Cost	49,892
Accumulated Depreciation	10,321
Total Cost, Net of Accumulated Depreciation	39,571
Encumbrances	$ 18,376
Date of Construction (C) Acquisition (A)	2011
Mason, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,032
Buildings & Improvements, Initial Cost	23,788
Improvements, Initial Cost	0
Land, Total Cost	2,032
Buildings & Improvements, Total Cost	24,270
Total Cost	26,302
Accumulated Depreciation	2,236
Total Cost, Net of Accumulated Depreciation	24,066
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
North Canton, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,889
Buildings & Improvements, Initial Cost	46,335
Improvements, Initial Cost	0
Land, Total Cost	10,664
Buildings & Improvements, Total Cost	48,181
Total Cost	58,845
Accumulated Depreciation	5,766
Total Cost, Net of Accumulated Depreciation	53,079
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
North Olmsted, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 24,352
Buildings & Improvements, Initial Cost	61,449
Improvements, Initial Cost	0
Land, Total Cost	24,352
Buildings & Improvements, Total Cost	63,667
Total Cost	88,019
Accumulated Depreciation	11,163
Total Cost, Net of Accumulated Depreciation	76,856
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Solon, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,220
Buildings & Improvements, Initial Cost	7,454
Improvements, Initial Cost	0
Land, Total Cost	6,220
Buildings & Improvements, Total Cost	27,228
Total Cost	33,448
Accumulated Depreciation	13,807
Total Cost, Net of Accumulated Depreciation	19,641
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1998
Stow, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 993
Buildings & Improvements, Initial Cost	9,028
Improvements, Initial Cost	0
Land, Total Cost	993
Buildings & Improvements, Total Cost	37,676
Total Cost	38,669
Accumulated Depreciation	19,495
Total Cost, Net of Accumulated Depreciation	19,174
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1969
Toledo, OH [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,316
Buildings & Improvements, Initial Cost	3,961
Improvements, Initial Cost	0
Land, Total Cost	534
Buildings & Improvements, Total Cost	2,370
Total Cost	2,904
Accumulated Depreciation	1,419
Total Cost, Net of Accumulated Depreciation	1,485
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2004
Westlake, OH
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 424
Buildings & Improvements, Initial Cost	3,803
Improvements, Initial Cost	201
Land, Total Cost	424
Buildings & Improvements, Total Cost	10,423
Total Cost	10,847
Accumulated Depreciation	7,643
Total Cost, Net of Accumulated Depreciation	3,204
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1974
Gresham, OR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,234
Buildings & Improvements, Initial Cost	60,802
Improvements, Initial Cost	0
Land, Total Cost	15,234
Buildings & Improvements, Total Cost	60,802
Total Cost	76,036
Accumulated Depreciation	559
Total Cost, Net of Accumulated Depreciation	75,477
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2016
Portland, OR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 20,208
Buildings & Improvements, Initial Cost	50,738
Improvements, Initial Cost	0
Land, Total Cost	20,208
Buildings & Improvements, Total Cost	51,846
Total Cost	72,054
Accumulated Depreciation	8,476
Total Cost, Net of Accumulated Depreciation	63,578
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2012
Allentown, PA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,558
Buildings & Improvements, Initial Cost	20,060
Improvements, Initial Cost	0
Land, Total Cost	5,343
Buildings & Improvements, Total Cost	23,747
Total Cost	29,090
Accumulated Depreciation	10,119
Total Cost, Net of Accumulated Depreciation	18,971
Encumbrances	$ 7,435
Date of Construction (C) Acquisition (A)	2003
Erie, PA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,345
Buildings & Improvements, Initial Cost	32,006
Improvements, Initial Cost	0
Land, Total Cost	9,345
Buildings & Improvements, Total Cost	74,119
Total Cost	83,464
Accumulated Depreciation	33,680
Total Cost, Net of Accumulated Depreciation	49,784
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1995
Jenkintown, PA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,705
Buildings & Improvements, Initial Cost	21,918
Improvements, Initial Cost	0
Land, Total Cost	4,705
Buildings & Improvements, Total Cost	24,975
Total Cost	29,680
Accumulated Depreciation	2,240
Total Cost, Net of Accumulated Depreciation	27,440
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
Mechanicsburg, PA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 12,574
Buildings & Improvements, Initial Cost	57,283
Improvements, Initial Cost	0
Land, Total Cost	12,574
Buildings & Improvements, Total Cost	57,756
Total Cost	70,330
Accumulated Depreciation	4,614
Total Cost, Net of Accumulated Depreciation	65,716
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
Arecibo, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,965
Buildings & Improvements, Initial Cost	29,898
Improvements, Initial Cost	0
Land, Total Cost	4,885
Buildings & Improvements, Total Cost	23,963
Total Cost	28,848
Accumulated Depreciation	12,198
Total Cost, Net of Accumulated Depreciation	16,650
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Bayamon, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 132,074
Buildings & Improvements, Initial Cost	152,441
Improvements, Initial Cost	0
Land, Total Cost	132,759
Buildings & Improvements, Total Cost	195,190
Total Cost	327,949
Accumulated Depreciation	68,125
Total Cost, Net of Accumulated Depreciation	259,824
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Bayamon, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 91,645
Buildings & Improvements, Initial Cost	98,007
Improvements, Initial Cost	0
Land, Total Cost	92,027
Buildings & Improvements, Total Cost	125,139
Total Cost	217,166
Accumulated Depreciation	43,381
Total Cost, Net of Accumulated Depreciation	173,785
Encumbrances	$ 121,341
Date of Construction (C) Acquisition (A)	2005
Bayamon, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,294
Buildings & Improvements, Initial Cost	11,987
Improvements, Initial Cost	0
Land, Total Cost	4,584
Buildings & Improvements, Total Cost	23,683
Total Cost	28,267
Accumulated Depreciation	8,467
Total Cost, Net of Accumulated Depreciation	19,800
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Carolina, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 28,522
Buildings & Improvements, Initial Cost	76,947
Improvements, Initial Cost	0
Land, Total Cost	28,601
Buildings & Improvements, Total Cost	82,792
Total Cost	111,393
Accumulated Depreciation	32,059
Total Cost, Net of Accumulated Depreciation	79,334
Encumbrances	$ 70,320
Date of Construction (C) Acquisition (A)	2005
Cayey, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 18,226
Buildings & Improvements, Initial Cost	25,101
Improvements, Initial Cost	0
Land, Total Cost	18,538
Buildings & Improvements, Total Cost	27,765
Total Cost	46,303
Accumulated Depreciation	10,425
Total Cost, Net of Accumulated Depreciation	35,878
Encumbrances	$ 20,289
Date of Construction (C) Acquisition (A)	2005
Fajardo, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,376
Buildings & Improvements, Initial Cost	41,199
Improvements, Initial Cost	0
Land, Total Cost	4,376
Buildings & Improvements, Total Cost	50,193
Total Cost	54,569
Accumulated Depreciation	16,980
Total Cost, Net of Accumulated Depreciation	37,589
Encumbrances	$ 24,396
Date of Construction (C) Acquisition (A)	2005
Guayama, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 1,960
Buildings & Improvements, Initial Cost	18,721
Improvements, Initial Cost	0
Land, Total Cost	1,960
Buildings & Improvements, Total Cost	19,559
Total Cost	21,519
Accumulated Depreciation	7,459
Total Cost, Net of Accumulated Depreciation	14,060
Encumbrances	$ 11,404
Date of Construction (C) Acquisition (A)	2005
Hatillo, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 101,219
Buildings & Improvements, Initial Cost	105,465
Improvements, Initial Cost	0
Land, Total Cost	88,874
Buildings & Improvements, Total Cost	126,007
Total Cost	214,881
Accumulated Depreciation	52,456
Total Cost, Net of Accumulated Depreciation	162,425
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Humacao, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 16,386
Buildings & Improvements, Initial Cost	74,059
Improvements, Initial Cost	0
Land, Total Cost	16,386
Buildings & Improvements, Total Cost	84,038
Total Cost	100,424
Accumulated Depreciation	34,614
Total Cost, Net of Accumulated Depreciation	65,810
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Isabela, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,175
Buildings & Improvements, Initial Cost	41,094
Improvements, Initial Cost	0
Land, Total Cost	8,236
Buildings & Improvements, Total Cost	43,265
Total Cost	51,501
Accumulated Depreciation	16,651
Total Cost, Net of Accumulated Depreciation	34,850
Encumbrances	$ 21,430
Date of Construction (C) Acquisition (A)	2005
Rio Piedras, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,338
Buildings & Improvements, Initial Cost	23,285
Improvements, Initial Cost	0
Land, Total Cost	10,338
Buildings & Improvements, Total Cost	29,781
Total Cost	40,119
Accumulated Depreciation	11,669
Total Cost, Net of Accumulated Depreciation	28,450
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
San German, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 9,686
Buildings & Improvements, Initial Cost	20,775
Improvements, Initial Cost	0
Land, Total Cost	9,686
Buildings & Improvements, Total Cost	21,768
Total Cost	31,454
Accumulated Depreciation	8,411
Total Cost, Net of Accumulated Depreciation	23,043
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Vega Baja, PR [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,076
Buildings & Improvements, Initial Cost	18,684
Improvements, Initial Cost	0
Land, Total Cost	3,851
Buildings & Improvements, Total Cost	13,967
Total Cost	17,818
Accumulated Depreciation	7,311
Total Cost, Net of Accumulated Depreciation	10,507
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2005
Charleston, SC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,479
Buildings & Improvements, Initial Cost	9,850
Improvements, Initial Cost	0
Land, Total Cost	3,479
Buildings & Improvements, Total Cost	19,266
Total Cost	22,745
Accumulated Depreciation	10,667
Total Cost, Net of Accumulated Depreciation	12,078
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Columbia, SC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,950
Buildings & Improvements, Initial Cost	29,065
Improvements, Initial Cost	0
Land, Total Cost	2,950
Buildings & Improvements, Total Cost	38,833
Total Cost	41,783
Accumulated Depreciation	4,721
Total Cost, Net of Accumulated Depreciation	37,062
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Greenville, SC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,659
Buildings & Improvements, Initial Cost	14,411
Improvements, Initial Cost	0
Land, Total Cost	5,659
Buildings & Improvements, Total Cost	14,411
Total Cost	20,070
Accumulated Depreciation	4,688
Total Cost, Net of Accumulated Depreciation	15,382
Encumbrances	$ 1,385
Date of Construction (C) Acquisition (A)	2007
Mount Pleasant, SC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,430
Buildings & Improvements, Initial Cost	10,470
Improvements, Initial Cost	0
Land, Total Cost	2,364
Buildings & Improvements, Total Cost	21,167
Total Cost	23,531
Accumulated Depreciation	12,939
Total Cost, Net of Accumulated Depreciation	10,592
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1995
Simpsonville, SC [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 417
Buildings & Improvements, Initial Cost	6,563
Improvements, Initial Cost	0
Land, Total Cost	417
Buildings & Improvements, Total Cost	10,370
Total Cost	10,787
Accumulated Depreciation	4,581
Total Cost, Net of Accumulated Depreciation	6,206
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	1994
Brentwood, TN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 6,101
Buildings & Improvements, Initial Cost	25,956
Improvements, Initial Cost	0
Land, Total Cost	6,101
Buildings & Improvements, Total Cost	27,319
Total Cost	33,420
Accumulated Depreciation	3,090
Total Cost, Net of Accumulated Depreciation	30,330
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Hendersonville, TN [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,249
Buildings & Improvements, Initial Cost	9,068
Improvements, Initial Cost	0
Land, Total Cost	3,249
Buildings & Improvements, Total Cost	9,123
Total Cost	12,372
Accumulated Depreciation	4,147
Total Cost, Net of Accumulated Depreciation	8,225
Encumbrances	$ 2,423
Date of Construction (C) Acquisition (A)	2003
Highland Village, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,545
Buildings & Improvements, Initial Cost	28,365
Improvements, Initial Cost	0
Land, Total Cost	5,545
Buildings & Improvements, Total Cost	30,340
Total Cost	35,885
Accumulated Depreciation	4,293
Total Cost, Net of Accumulated Depreciation	31,592
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Houston, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,179
Buildings & Improvements, Initial Cost	60,407
Improvements, Initial Cost	0
Land, Total Cost	15,179
Buildings & Improvements, Total Cost	60,406
Total Cost	75,585
Accumulated Depreciation	3,581
Total Cost, Net of Accumulated Depreciation	72,004
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2015
Irving, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 17,701
Buildings & Improvements, Initial Cost	10,571
Improvements, Initial Cost	0
Land, Total Cost	17,701
Buildings & Improvements, Total Cost	11,761
Total Cost	29,462
Accumulated Depreciation	1,667
Total Cost, Net of Accumulated Depreciation	27,795
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Kyle, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,548
Buildings & Improvements, Initial Cost	7,349
Improvements, Initial Cost	0
Land, Total Cost	12,678
Buildings & Improvements, Total Cost	28,041
Total Cost	40,719
Accumulated Depreciation	4,192
Total Cost, Net of Accumulated Depreciation	36,527
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2009
Mesquite, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 7,051
Buildings & Improvements, Initial Cost	25,531
Improvements, Initial Cost	0
Land, Total Cost	7,051
Buildings & Improvements, Total Cost	25,452
Total Cost	32,503
Accumulated Depreciation	3,015
Total Cost, Net of Accumulated Depreciation	29,488
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
San Antonio, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,475
Buildings & Improvements, Initial Cost	37,327
Improvements, Initial Cost	0
Land, Total Cost	4,873
Buildings & Improvements, Total Cost	50,768
Total Cost	55,641
Accumulated Depreciation	20,655
Total Cost, Net of Accumulated Depreciation	34,986
Encumbrances	$ 23,900
Date of Construction (C) Acquisition (A)	2002
San Antonio, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 5,602
Buildings & Improvements, Initial Cost	39,196
Improvements, Initial Cost	0
Land, Total Cost	10,158
Buildings & Improvements, Total Cost	113,817
Total Cost	123,975
Accumulated Depreciation	30,174
Total Cost, Net of Accumulated Depreciation	93,801
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
San Antonio, TX [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,381
Buildings & Improvements, Initial Cost	6,487
Improvements, Initial Cost	0
Land, Total Cost	2,381
Buildings & Improvements, Total Cost	23,027
Total Cost	25,408
Accumulated Depreciation	7,767
Total Cost, Net of Accumulated Depreciation	17,641
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Chester, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 10,780
Buildings & Improvements, Initial Cost	4,752
Improvements, Initial Cost	0
Land, Total Cost	10,780
Buildings & Improvements, Total Cost	14,074
Total Cost	24,854
Accumulated Depreciation	4,357
Total Cost, Net of Accumulated Depreciation	20,497
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Dumfries, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 12,911
Buildings & Improvements, Initial Cost	10,092
Improvements, Initial Cost	0
Land, Total Cost	12,911
Buildings & Improvements, Total Cost	10,112
Total Cost	23,023
Accumulated Depreciation	734
Total Cost, Net of Accumulated Depreciation	22,289
Encumbrances	$ 12,120
Date of Construction (C) Acquisition (A)	2014
Fairfax, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 15,681
Buildings & Improvements, Initial Cost	68,536
Improvements, Initial Cost	0
Land, Total Cost	15,681
Buildings & Improvements, Total Cost	69,373
Total Cost	85,054
Accumulated Depreciation	7,493
Total Cost, Net of Accumulated Depreciation	77,561
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Midlothian, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 3,507
Buildings & Improvements, Initial Cost	9,229
Improvements, Initial Cost	0
Land, Total Cost	3,507
Buildings & Improvements, Total Cost	9,691
Total Cost	13,198
Accumulated Depreciation	1,186
Total Cost, Net of Accumulated Depreciation	12,012
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Midlothian, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,754
Buildings & Improvements, Initial Cost	20,273
Improvements, Initial Cost	0
Land, Total Cost	4,754
Buildings & Improvements, Total Cost	25,732
Total Cost	30,486
Accumulated Depreciation	3,488
Total Cost, Net of Accumulated Depreciation	26,998
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Newport News, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 963
Buildings & Improvements, Initial Cost	7,120
Improvements, Initial Cost	0
Land, Total Cost	963
Buildings & Improvements, Total Cost	7,122
Total Cost	8,085
Accumulated Depreciation	1,024
Total Cost, Net of Accumulated Depreciation	7,061
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2013
Richmond, VA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 11,879
Buildings & Improvements, Initial Cost	34,736
Improvements, Initial Cost	0
Land, Total Cost	11,879
Buildings & Improvements, Total Cost	36,064
Total Cost	47,943
Accumulated Depreciation	11,737
Total Cost, Net of Accumulated Depreciation	36,206
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Springfield, VA
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 17,016
Buildings & Improvements, Initial Cost	40,038
Improvements, Initial Cost	0
Land, Total Cost	17,016
Buildings & Improvements, Total Cost	41,789
Total Cost	58,805
Accumulated Depreciation	13,808
Total Cost, Net of Accumulated Depreciation	44,997
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2007
Vancouver, WA [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,169
Buildings & Improvements, Initial Cost	25,769
Improvements, Initial Cost	0
Land, Total Cost	4,169
Buildings & Improvements, Total Cost	25,813
Total Cost	29,982
Accumulated Depreciation	2,112
Total Cost, Net of Accumulated Depreciation	27,870
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2014
Brookfield, WI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 4,791
Buildings & Improvements, Initial Cost	16,023
Improvements, Initial Cost	0
Land, Total Cost	4,791
Buildings & Improvements, Total Cost	21,662
Total Cost	26,453
Accumulated Depreciation	4,035
Total Cost, Net of Accumulated Depreciation	22,418
Encumbrances	$ 5,634
Date of Construction (C) Acquisition (A)	2013
Brown Deer, WI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 8,465
Buildings & Improvements, Initial Cost	32,652
Improvements, Initial Cost	0
Land, Total Cost	8,465
Buildings & Improvements, Total Cost	37,869
Total Cost	46,334
Accumulated Depreciation	6,602
Total Cost, Net of Accumulated Depreciation	39,732
Encumbrances	$ 11,628
Date of Construction (C) Acquisition (A)	2013
West Allis, WI [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 2,371
Buildings & Improvements, Initial Cost	10,982
Improvements, Initial Cost	0
Land, Total Cost	1,703
Buildings & Improvements, Total Cost	12,530
Total Cost	14,233
Accumulated Depreciation	5,359
Total Cost, Net of Accumulated Depreciation	8,874
Encumbrances	$ 0
Date of Construction (C) Acquisition (A)	2003
Portfolio Balance (DDR) - unencumbered [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	$ 55,221
Buildings & Improvements, Initial Cost	50,744
Improvements, Initial Cost	0
Land, Total Cost	55,221
Buildings & Improvements, Total Cost	50,744
Total Cost	105,965
Accumulated Depreciation	432
Total Cost, Net of Accumulated Depreciation	105,533
Encumbrances	0
Portfolio Balance (DDR) - encumbered [Member]
Real Estate And Accumulated Depreciation [Line Items]
Land, Initial Cost	6,659
Buildings & Improvements, Initial Cost	176,497
Improvements, Initial Cost	0
Land, Total Cost	6,659
Buildings & Improvements, Total Cost	176,497
Total Cost	183,156
Accumulated Depreciation	103,297
Total Cost, Net of Accumulated Depreciation	79,859
Encumbrances	$ 26,194