Schedule III (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Real Estate and Accumulated Depreciation [Line Items]
Gross Amount Carried at End of Period	$ 5,962,096,000	$ 6,777,467,000	$ 6,846,182,000	$ 6,306,483,000
Accumulated Depreciation	$ 847,106,000	1,062,964,000	1,102,609,000	940,613,000
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,962,096,000	6,777,467,000	6,846,182,000
Real Estate Additions	675,868,000	470,812,000	553,651,000
Real Estate, Cost of Real Estate Sold	(331,481,000)	(1,286,183,000)	(622,366,000)
Real Estate, Gross	6,306,483,000	5,962,096,000	6,777,467,000
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	847,106,000	1,062,964,000	1,102,609,000
Real Estate Accumulated Depreciation, Depreciation Expense	149,044,000	168,077,000	182,011,000
Real Estate Accumulated Depreciation, Real Estate Sold	(55,537,000)	(383,935,000)	(221,656,000)
Real Estate Accumulated Depreciation	940,613,000	$ 847,106,000	$ 1,062,964,000
Allianz, John Hancock, LaSalle Bank, Athene, New York Life and Wells Fargo [Member] [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				214,200,000
Total Real Estate [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				47,946,455
Initial Cost of Land				1,393,447,823
Initial Cost of Buildings				2,336,140,008
Costs Capitalized Subsequent to Acquisition				2,576,894,798
Land and Improvements				1,484,428,501
Building and Improvements				4,822,054,120
Gross Amount Carried at End of Period	6,306,482,621			6,306,482,621
Accumulated Depreciation	940,612,342			940,612,342
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	6,306,482,621
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 940,612,342
Operating Properties [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carlisle, PA
Encumbrances				0
Initial Cost of Land				4,249,868
Initial Cost of Buildings				13,886,039
Costs Capitalized Subsequent to Acquisition				2,345,375
Land and Improvements				4,095,262
Building and Improvements				16,386,020
Gross Amount Carried at End of Period	$ 20,481,282			20,481,282
Accumulated Depreciation	$ 6,860,959			6,860,959
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,481,282
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,860,959
Operating Properties [Member] | 627 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Morrisville, NC
Encumbrances				0
Initial Cost of Land				1,061,370
Initial Cost of Buildings				5,152,110
Costs Capitalized Subsequent to Acquisition				384,204
Land and Improvements				1,061,632
Building and Improvements				5,536,052
Gross Amount Carried at End of Period	$ 6,597,684			6,597,684
Accumulated Depreciation	$ 1,524,610			1,524,610
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,597,684
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,524,610
Operating Properties [Member] | 1775 Hillcrest Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Norcross, GA
Encumbrances				0
Initial Cost of Land				1,318,956
Initial Cost of Buildings				4,379,239
Costs Capitalized Subsequent to Acquisition				351
Land and Improvements				1,318,956
Building and Improvements				4,379,590
Gross Amount Carried at End of Period	$ 5,698,546			5,698,546
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,698,546
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Operating Properties [Member] | 1467 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Aberdeen, MD
Encumbrances				0
Initial Cost of Land				12,052,635
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				35,353,684
Land and Improvements				12,334,030
Building and Improvements				35,072,289
Gross Amount Carried at End of Period	$ 47,406,319			47,406,319
Accumulated Depreciation	$ 3,266,781			3,266,781
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 47,406,319
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,266,781
Operating Properties [Member] | 1501 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Aberdeen, MD
Encumbrances				0
Initial Cost of Land				5,813,324
Initial Cost of Buildings				18,874,059
Costs Capitalized Subsequent to Acquisition				6,381,862
Land and Improvements				5,816,839
Building and Improvements				25,252,406
Gross Amount Carried at End of Period	$ 31,069,245			31,069,245
Accumulated Depreciation	$ 7,510,366			7,510,366
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 31,069,245
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,510,366
Operating Properties [Member] | 869 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Addison, IL
Encumbrances				0
Initial Cost of Land				1,194,223
Initial Cost of Buildings				4,201,881
Costs Capitalized Subsequent to Acquisition				85,733
Land and Improvements				1,194,223
Building and Improvements				4,287,615
Gross Amount Carried at End of Period	$ 5,481,838			5,481,838
Accumulated Depreciation	$ 553,871			553,871
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,481,838
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 553,871
Operating Properties [Member] | 901 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Addison, IL
Encumbrances				0
Initial Cost of Land				2,055,066
Initial Cost of Buildings				5,984,093
Costs Capitalized Subsequent to Acquisition				880,440
Land and Improvements				2,055,066
Building and Improvements				6,864,533
Gross Amount Carried at End of Period	$ 8,919,599			8,919,599
Accumulated Depreciation	$ 964,359			964,359
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,919,599
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 964,359
Operating Properties [Member] | 8620 Congdon Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Alburtis, PA
Encumbrances				0
Initial Cost of Land				38,328,000
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				36,639,297
Land and Improvements				38,328,000
Building and Improvements				36,639,297
Gross Amount Carried at End of Period	$ 74,967,297			74,967,297
Accumulated Depreciation	$ 1,625,979			1,625,979
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 74,967,297
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,625,979
Operating Properties [Member] | 200 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				4,722,683
Initial Cost of Buildings				18,922,645
Costs Capitalized Subsequent to Acquisition				967,059
Land and Improvements				4,722,683
Building and Improvements				19,889,704
Gross Amount Carried at End of Period	$ 24,612,387			24,612,387
Accumulated Depreciation	$ 6,690,719			6,690,719
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 24,612,387
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,690,719
Operating Properties [Member] | 250 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				3,599,936
Initial Cost of Buildings				12,099,145
Costs Capitalized Subsequent to Acquisition				2,200,244
Land and Improvements				3,717,733
Building and Improvements				14,181,592
Gross Amount Carried at End of Period	$ 17,899,325			17,899,325
Accumulated Depreciation	$ 5,557,571			5,557,571
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 17,899,325
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,557,571
Operating Properties [Member] | 400 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				8,065,500
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				29,708,283
Land and Improvements				8,184,096
Building and Improvements				29,589,687
Gross Amount Carried at End of Period	$ 37,773,783			37,773,783
Accumulated Depreciation	$ 15,721,633			15,721,633
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 37,773,783
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 15,721,633
Operating Properties [Member] | 650 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				5,208,248
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				32,432,054
Land and Improvements				9,961,788
Building and Improvements				27,678,514
Gross Amount Carried at End of Period	$ 37,640,302			37,640,302
Accumulated Depreciation	$ 10,591,886			10,591,886
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 37,640,302
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 10,591,886
Operating Properties [Member] | 651 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				4,308,646
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				17,846,386
Land and Improvements				4,308,646
Building and Improvements				17,846,386
Gross Amount Carried at End of Period	$ 22,155,032			22,155,032
Accumulated Depreciation	$ 9,669,809			9,669,809
Date of Construction or Acquisition	2000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 22,155,032
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 9,669,809
Operating Properties [Member] | 700 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				3,473,120
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				20,307,750
Land and Improvements				4,174,970
Building and Improvements				19,605,900
Gross Amount Carried at End of Period	$ 23,780,870			23,780,870
Accumulated Depreciation	$ 11,018,939			11,018,939
Date of Construction or Acquisition	1998
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 23,780,870
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 11,018,939
Operating Properties [Member] | 705 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				10,594,027
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				28,815,711
Land and Improvements				10,596,767
Building and Improvements				28,812,971
Gross Amount Carried at End of Period	$ 39,409,738			39,409,738
Accumulated Depreciation	$ 15,981,798			15,981,798
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 39,409,738
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 15,981,798
Operating Properties [Member] | 7165 Ambassador Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				792,999
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,694,984
Land and Improvements				804,848
Building and Improvements				4,683,135
Gross Amount Carried at End of Period	$ 5,487,983			5,487,983
Accumulated Depreciation	$ 2,146,445			2,146,445
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,487,983
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,146,445
Operating Properties [Member] | 7248 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				2,670,849
Initial Cost of Buildings				13,307,408
Costs Capitalized Subsequent to Acquisition				4,629,975
Land and Improvements				2,670,673
Building and Improvements				17,937,559
Gross Amount Carried at End of Period	$ 20,608,232			20,608,232
Accumulated Depreciation	$ 9,398,129			9,398,129
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,608,232
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 9,398,129
Operating Properties [Member] | 7339 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				1,187,776
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,592,938
Land and Improvements				1,197,447
Building and Improvements				7,583,267
Gross Amount Carried at End of Period	$ 8,780,714			8,780,714
Accumulated Depreciation	$ 4,174,870			4,174,870
Date of Construction or Acquisition	1996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,780,714
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,174,870
Operating Properties [Member] | 7437 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				717,488
Initial Cost of Buildings				5,022,413
Costs Capitalized Subsequent to Acquisition				3,450,291
Land and Improvements				726,651
Building and Improvements				8,463,540
Gross Amount Carried at End of Period	$ 9,190,191			9,190,191
Accumulated Depreciation	$ 5,460,929			5,460,929
Date of Construction or Acquisition	1976
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,190,191
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,460,929
Operating Properties [Member] | 8014 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				4,019,258
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,192,116
Land and Improvements				3,645,117
Building and Improvements				11,566,257
Gross Amount Carried at End of Period	$ 15,211,374			15,211,374
Accumulated Depreciation	$ 5,409,248			5,409,248
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,211,374
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,409,248
Operating Properties [Member] | 8150 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				2,564,167
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,480,757
Land and Improvements				2,571,466
Building and Improvements				9,473,458
Gross Amount Carried at End of Period	$ 12,044,924			12,044,924
Accumulated Depreciation	$ 3,917,347			3,917,347
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,044,924
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,917,347
Operating Properties [Member] | 8250 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				1,025,667
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,255,168
Land and Improvements				1,035,854
Building and Improvements				5,244,981
Gross Amount Carried at End of Period	$ 6,280,835			6,280,835
Accumulated Depreciation	$ 1,966,477			1,966,477
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,280,835
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,966,477
Operating Properties [Member] | 8400 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				6,725,948
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				27,404,693
Land and Improvements				7,521,211
Building and Improvements				26,609,430
Gross Amount Carried at End of Period	$ 34,130,641			34,130,641
Accumulated Depreciation	$ 8,076,494			8,076,494
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 34,130,641
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 8,076,494
Operating Properties [Member] | 6330 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				531,268
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,075,126
Land and Improvements				532,047
Building and Improvements				6,074,347
Gross Amount Carried at End of Period	$ 6,606,394			6,606,394
Accumulated Depreciation	$ 4,051,848			4,051,848
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,606,394
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,051,848
Operating Properties [Member] | 6350 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				360,027
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,526,417
Land and Improvements				560,691
Building and Improvements				4,325,753
Gross Amount Carried at End of Period	$ 4,886,444			4,886,444
Accumulated Depreciation	$ 2,607,549			2,607,549
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,886,444
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,607,549
Operating Properties [Member] | 6370 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				540,795
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,121,409
Land and Improvements				541,459
Building and Improvements				4,120,745
Gross Amount Carried at End of Period	$ 4,662,204			4,662,204
Accumulated Depreciation	$ 2,579,828			2,579,828
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,662,204
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,579,828
Operating Properties [Member] | 6390 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				707,203
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,372,168
Land and Improvements				707,867
Building and Improvements				3,371,504
Gross Amount Carried at End of Period	$ 4,079,371			4,079,371
Accumulated Depreciation	$ 1,929,807			1,929,807
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,079,371
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,929,807
Operating Properties [Member] | 6520 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				453,315
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,571,738
Land and Improvements				484,361
Building and Improvements				1,540,692
Gross Amount Carried at End of Period	$ 2,025,053			2,025,053
Accumulated Depreciation	$ 713,180			713,180
Date of Construction or Acquisition	1996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,025,053
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 713,180
Operating Properties [Member] | 6540 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				422,042
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,337,554
Land and Improvements				422,730
Building and Improvements				5,336,866
Gross Amount Carried at End of Period	$ 5,759,596			5,759,596
Accumulated Depreciation	$ 3,119,448			3,119,448
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,759,596
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,119,448
Operating Properties [Member] | 6560 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				458,281
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,856,829
Land and Improvements				458,945
Building and Improvements				3,856,165
Gross Amount Carried at End of Period	$ 4,315,110			4,315,110
Accumulated Depreciation	$ 2,331,497			2,331,497
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,315,110
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,331,497
Operating Properties [Member] | 6580 Snowdrift Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				388,328
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,877,166
Land and Improvements				389,081
Building and Improvements				4,876,413
Gross Amount Carried at End of Period	$ 5,265,494			5,265,494
Accumulated Depreciation	$ 3,220,831			3,220,831
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,265,494
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,220,831
Operating Properties [Member] | 7620 Cetronia Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				1,091,806
Initial Cost of Buildings				3,851,456
Costs Capitalized Subsequent to Acquisition				446,341
Land and Improvements				1,093,724
Building and Improvements				4,295,879
Gross Amount Carried at End of Period	$ 5,389,603			5,389,603
Accumulated Depreciation	$ 2,379,820			2,379,820
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,389,603
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,379,820
Operating Properties [Member] | 11222 Melrose Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Franklin Park, IL
Encumbrances				0
Initial Cost of Land				2,999,106
Initial Cost of Buildings				4,658,605
Costs Capitalized Subsequent to Acquisition				104,074
Land and Improvements				2,999,106
Building and Improvements				4,762,679
Gross Amount Carried at End of Period	$ 7,761,785			7,761,785
Accumulated Depreciation	$ 292,028			292,028
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,761,785
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 292,028
Operating Properties [Member] | 3095 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Encumbrances				0
Initial Cost of Land				200,351
Initial Cost of Buildings				1,729,161
Costs Capitalized Subsequent to Acquisition				254,912
Land and Improvements				200,351
Building and Improvements				1,984,073
Gross Amount Carried at End of Period	$ 2,184,424			2,184,424
Accumulated Depreciation	$ 342,828			342,828
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,184,424
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 342,828
Operating Properties [Member] | 3097 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Encumbrances				0
Initial Cost of Land				188,680
Initial Cost of Buildings				1,721,048
Costs Capitalized Subsequent to Acquisition				377,679
Land and Improvements				188,680
Building and Improvements				2,098,727
Gross Amount Carried at End of Period	$ 2,287,407			2,287,407
Accumulated Depreciation	$ 252,522			252,522
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,287,407
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 252,522
Operating Properties [Member] | 7030 Buford Highway NE [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Encumbrances				0
Initial Cost of Land				919,850
Initial Cost of Buildings				4,051,340
Costs Capitalized Subsequent to Acquisition				938,092
Land and Improvements				919,850
Building and Improvements				4,989,432
Gross Amount Carried at End of Period	$ 5,909,282			5,909,282
Accumulated Depreciation	$ 864,963			864,963
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,909,282
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 864,963
Operating Properties [Member] | Barton 150 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Barton Under Needwood, UK
Encumbrances				0
Initial Cost of Land				2,196,955
Initial Cost of Buildings				13,643,981
Costs Capitalized Subsequent to Acquisition				(2,911,461)
Land and Improvements				1,793,045
Building and Improvements				11,136,430
Gross Amount Carried at End of Period	$ 12,929,475			12,929,475
Accumulated Depreciation	$ 1,423,910			1,423,910
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,929,475
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,423,910
Operating Properties [Member] | 1055-1071 Kingsland Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Batavia, IL
Encumbrances				0
Initial Cost of Land				727,294
Initial Cost of Buildings				2,367,529
Costs Capitalized Subsequent to Acquisition				686,813
Land and Improvements				727,294
Building and Improvements				3,054,342
Gross Amount Carried at End of Period	$ 3,781,636			3,781,636
Accumulated Depreciation	$ 517,875			517,875
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,781,636
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 517,875
Operating Properties [Member] | 4606 Richlynn Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Belcamp, MD
Encumbrances				0
Initial Cost of Land				299,600
Initial Cost of Buildings				1,818,861
Costs Capitalized Subsequent to Acquisition				722,992
Land and Improvements				299,600
Building and Improvements				2,541,853
Gross Amount Carried at End of Period	$ 2,841,453			2,841,453
Accumulated Depreciation	$ 1,167,850			1,167,850
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,841,453
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,167,850
Operating Properties [Member] | 11800 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				2,769,962
Initial Cost of Buildings				1,829,028
Costs Capitalized Subsequent to Acquisition				257,575
Land and Improvements				2,663,725
Building and Improvements				2,192,841
Gross Amount Carried at End of Period	$ 4,856,566			4,856,566
Accumulated Depreciation	$ 392,541			392,541
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,856,566
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 392,541
Operating Properties [Member] | 11850 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				3,595,044
Initial Cost of Buildings				2,415,132
Costs Capitalized Subsequent to Acquisition				164,695
Land and Improvements				3,457,162
Building and Improvements				2,717,709
Gross Amount Carried at End of Period	$ 6,174,871			6,174,871
Accumulated Depreciation	$ 621,879			621,879
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,174,871
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 621,879
Operating Properties [Member] | 11900 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				3,492,036
Initial Cost of Buildings				2,024,038
Costs Capitalized Subsequent to Acquisition				521,421
Land and Improvements				3,358,104
Building and Improvements				2,679,391
Gross Amount Carried at End of Period	$ 6,037,495			6,037,495
Accumulated Depreciation	$ 673,883			673,883
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,037,495
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 673,883
Operating Properties [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				529,876
Initial Cost of Buildings				3,267,872
Costs Capitalized Subsequent to Acquisition				405,454
Land and Improvements				529,876
Building and Improvements				3,673,326
Gross Amount Carried at End of Period	$ 4,203,202			4,203,202
Accumulated Depreciation	$ 603,596			603,596
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,203,202
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 603,596
Operating Properties [Member] | 12104 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				2,021,752
Initial Cost of Buildings				2,503,802
Costs Capitalized Subsequent to Acquisition				301,581
Land and Improvements				2,021,752
Building and Improvements				2,805,383
Gross Amount Carried at End of Period	$ 4,827,135			4,827,135
Accumulated Depreciation	$ 632,738			632,738
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,827,135
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 632,738
Operating Properties [Member] | 12200 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				1,347,882
Initial Cost of Buildings				1,460,291
Costs Capitalized Subsequent to Acquisition				624,034
Land and Improvements				1,347,882
Building and Improvements				2,084,325
Gross Amount Carried at End of Period	$ 3,432,207			3,432,207
Accumulated Depreciation	$ 374,847			374,847
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,432,207
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 374,847
Operating Properties [Member] | 12240 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Beltsville,MD
Encumbrances				0
Initial Cost of Land				1,479,307
Initial Cost of Buildings				2,159,997
Costs Capitalized Subsequent to Acquisition				791,326
Land and Improvements				1,479,307
Building and Improvements				2,951,324
Gross Amount Carried at End of Period	$ 4,430,631			4,430,631
Accumulated Depreciation	$ 491,902			491,902
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,430,631
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 491,902
Operating Properties [Member] | 1071 Thorndale Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bensenville,IL
Encumbrances				0
Initial Cost of Land				2,173,006
Initial Cost of Buildings				2,280,788
Costs Capitalized Subsequent to Acquisition				279,995
Land and Improvements				2,016,715
Building and Improvements				2,717,074
Gross Amount Carried at End of Period	$ 4,733,789			4,733,789
Accumulated Depreciation	$ 487,001			487,001
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,733,789
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 487,001
Operating Properties [Member] | 1260-1274 Ellis Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bensenville,IL
Encumbrances				0
Initial Cost of Land				2,298,560
Initial Cost of Buildings				4,020,382
Costs Capitalized Subsequent to Acquisition				360,477
Land and Improvements				2,298,560
Building and Improvements				4,380,859
Gross Amount Carried at End of Period	$ 6,679,419			6,679,419
Accumulated Depreciation	$ 753,050			753,050
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,679,419
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 753,050
Operating Properties [Member] | 371-377 Meyer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bensenville,IL
Encumbrances				0
Initial Cost of Land				1,903,423
Initial Cost of Buildings				3,563,953
Costs Capitalized Subsequent to Acquisition				581,985
Land and Improvements				1,903,423
Building and Improvements				4,145,938
Gross Amount Carried at End of Period	$ 6,049,361			6,049,361
Accumulated Depreciation	$ 646,670			646,670
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,049,361
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 646,670
Operating Properties [Member] | 850-880 Devon Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bensenville,IL
Encumbrances				0
Initial Cost of Land				2,958,756
Initial Cost of Buildings				7,959,013
Costs Capitalized Subsequent to Acquisition				780,767
Land and Improvements				2,958,756
Building and Improvements				8,739,780
Gross Amount Carried at End of Period	$ 11,698,536			11,698,536
Accumulated Depreciation	$ 1,397,398			1,397,398
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,698,536
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,397,398
Operating Properties [Member] | 10 Emery Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bethlehem, PA
Encumbrances				0
Initial Cost of Land				5,591,216
Initial Cost of Buildings				32,941,818
Costs Capitalized Subsequent to Acquisition				8,086,723
Land and Improvements				8,947,574
Building and Improvements				37,672,183
Gross Amount Carried at End of Period	$ 46,619,757			46,619,757
Accumulated Depreciation	$ 4,444,772			4,444,772
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 46,619,757
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,444,772
Operating Properties [Member] | 2785 Commerce Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bethlehem, PA
Encumbrances				0
Initial Cost of Land				11,961,623
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				46,710,814
Land and Improvements				12,009,985
Building and Improvements				46,662,452
Gross Amount Carried at End of Period	$ 58,672,437			58,672,437
Accumulated Depreciation	$ 5,682,988			5,682,988
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 58,672,437
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,682,988
Operating Properties [Member] | 1455 Remington Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bolingbrook, IL
Encumbrances				0
Initial Cost of Land				2,501,294
Initial Cost of Buildings				10,704,719
Costs Capitalized Subsequent to Acquisition				2,027
Land and Improvements				2,501,294
Building and Improvements				10,706,746
Gross Amount Carried at End of Period	$ 13,208,040			13,208,040
Accumulated Depreciation	$ 1,443,812			1,443,812
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,208,040
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,443,812
Operating Properties [Member] | 150 E Crossroads Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bolingbrook, IL
Encumbrances				0
Initial Cost of Land				3,078,949
Initial Cost of Buildings				14,143,377
Costs Capitalized Subsequent to Acquisition				1,304,570
Land and Improvements				3,078,949
Building and Improvements				15,447,947
Gross Amount Carried at End of Period	$ 18,526,896			18,526,896
Accumulated Depreciation	$ 2,279,751			2,279,751
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 18,526,896
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,279,751
Operating Properties [Member] | 553 S Joliet Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bolingbrook, IL
Encumbrances				0
Initial Cost of Land				3,764,831
Initial Cost of Buildings				15,109,947
Costs Capitalized Subsequent to Acquisition				2,608,351
Land and Improvements				3,764,831
Building and Improvements				17,718,298
Gross Amount Carried at End of Period	$ 21,483,129			21,483,129
Accumulated Depreciation	$ 2,927,857			2,927,857
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,483,129
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,927,857
Operating Properties [Member] | 400 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Breinigsville, PA
Encumbrances				0
Initial Cost of Land				2,859,106
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,523,348
Land and Improvements				2,865,575
Building and Improvements				12,516,879
Gross Amount Carried at End of Period	$ 15,382,454			15,382,454
Accumulated Depreciation	$ 3,591,183			3,591,183
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,382,454
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,591,183
Operating Properties [Member] | 8201 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Breinigsville, PA
Encumbrances				0
Initial Cost of Land				2,089,719
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,254,674
Land and Improvements				2,222,168
Building and Improvements				9,122,225
Gross Amount Carried at End of Period	$ 11,344,393			11,344,393
Accumulated Depreciation	$ 2,117,229			2,117,229
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,344,393
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,117,229
Operating Properties [Member] | 8451 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Breinigsville, PA
Encumbrances				0
Initial Cost of Land				8,752,708
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				40,892,454
Land and Improvements				11,511,499
Building and Improvements				38,133,663
Gross Amount Carried at End of Period	$ 49,645,162			49,645,162
Accumulated Depreciation	$ 11,459,148			11,459,148
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 49,645,162
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 11,459,148
Operating Properties [Member] | 860 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Breinigsville, PA
Encumbrances				0
Initial Cost of Land				8,118,881
Initial Cost of Buildings				18,885,486
Costs Capitalized Subsequent to Acquisition				7,523,072
Land and Improvements				8,118,881
Building and Improvements				26,408,558
Gross Amount Carried at End of Period	$ 34,527,439			34,527,439
Accumulated Depreciation	$ 10,705,203			10,705,203
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 34,527,439
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 10,705,203
Operating Properties [Member] | 3525 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Buford, GA
Encumbrances				0
Initial Cost of Land				1,391,065
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,767,546
Land and Improvements				1,629,677
Building and Improvements				5,528,934
Gross Amount Carried at End of Period	$ 7,158,611			7,158,611
Accumulated Depreciation	$ 81,499			81,499
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,158,611
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 81,499
Operating Properties [Member] | 40 Logistics Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carlisle, PA
Encumbrances				0
Initial Cost of Land				7,981,850
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				33,019,624
Land and Improvements				8,081,272
Building and Improvements				32,920,202
Gross Amount Carried at End of Period	$ 41,001,474			41,001,474
Accumulated Depreciation	$ 5,205,564			5,205,564
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 41,001,474
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,205,564
Operating Properties [Member] | 135-195 East Elk Trail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carol Stream, IL
Encumbrances				0
Initial Cost of Land				4,873,094
Initial Cost of Buildings				12,430,320
Costs Capitalized Subsequent to Acquisition				2,711,700
Land and Improvements				4,873,094
Building and Improvements				15,142,020
Gross Amount Carried at End of Period	$ 20,015,114			20,015,114
Accumulated Depreciation	$ 1,653,950			1,653,950
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,015,114
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,653,950
Operating Properties [Member] | 515 Kehoe Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carol Stream, IL
Encumbrances				0
Initial Cost of Land				5,523,427
Initial Cost of Buildings				14,581,705
Costs Capitalized Subsequent to Acquisition				1,018,131
Land and Improvements				5,523,427
Building and Improvements				15,599,836
Gross Amount Carried at End of Period	$ 21,123,263			21,123,263
Accumulated Depreciation	$ 1,794,650			1,794,650
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,123,263
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,794,650
Operating Properties [Member] | 1413 Bradley Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carrollton, TX
Encumbrances				0
Initial Cost of Land				247,477
Initial Cost of Buildings				2,028,322
Costs Capitalized Subsequent to Acquisition				83,692
Land and Improvements				247,477
Building and Improvements				2,112,014
Gross Amount Carried at End of Period	$ 2,359,491			2,359,491
Accumulated Depreciation	$ 335,971			335,971
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,359,491
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 335,971
Operating Properties [Member] | 3200 Belmeade Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carrollton, TX
Encumbrances				0
Initial Cost of Land				1,042,453
Initial Cost of Buildings				8,027,974
Costs Capitalized Subsequent to Acquisition				545,748
Land and Improvements				1,042,453
Building and Improvements				8,573,722
Gross Amount Carried at End of Period	$ 9,616,175			9,616,175
Accumulated Depreciation	$ 1,203,243			1,203,243
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,616,175
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,203,243
Operating Properties [Member] | 16325 S Avalon Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carson, CA
Encumbrances				0
Initial Cost of Land				26,432,369
Initial Cost of Buildings				19,669,675
Costs Capitalized Subsequent to Acquisition				288,256
Land and Improvements				26,432,369
Building and Improvements				19,957,931
Gross Amount Carried at End of Period	$ 46,390,300			46,390,300
Accumulated Depreciation	$ 90,391			90,391
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 46,390,300
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 90,391
Operating Properties [Member] | 1475 Nitterhouse Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Chambersburg, PA
Encumbrances				0
Initial Cost of Land				7,081,007
Initial Cost of Buildings				39,002,011
Costs Capitalized Subsequent to Acquisition				2,094,847
Land and Improvements				7,081,007
Building and Improvements				41,096,858
Gross Amount Carried at End of Period	$ 48,177,865			48,177,865
Accumulated Depreciation	$ 6,065,304			6,065,304
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 48,177,865
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,065,304
Operating Properties [Member] | 95 Kriner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Chambersburg, PA
Encumbrances				0
Initial Cost of Land				8,695,501
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				35,060,794
Land and Improvements				9,407,871
Building and Improvements				34,348,424
Gross Amount Carried at End of Period	$ 43,756,295			43,756,295
Accumulated Depreciation	$ 9,231,761			9,231,761
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 43,756,295
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 9,231,761
Operating Properties [Member] | 9000 109th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Champlin, MN
Encumbrances				0
Initial Cost of Land				1,251,043
Initial Cost of Buildings				11,662,995
Costs Capitalized Subsequent to Acquisition				120,863
Land and Improvements				1,251,043
Building and Improvements				11,783,858
Gross Amount Carried at End of Period	$ 13,034,901			13,034,901
Accumulated Depreciation	$ 2,132,475			2,132,475
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,034,901
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,132,475
Operating Properties [Member] | 11701 Goodrich Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				2,054,621
Initial Cost of Buildings				6,356,151
Costs Capitalized Subsequent to Acquisition				630,877
Land and Improvements				2,054,621
Building and Improvements				6,987,027
Gross Amount Carried at End of Period	$ 9,041,648			9,041,648
Accumulated Depreciation	$ 1,347,806			1,347,806
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,041,648
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,347,806
Operating Properties [Member] | 12810 Virkler Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				475,368
Initial Cost of Buildings				2,367,586
Costs Capitalized Subsequent to Acquisition				882,005
Land and Improvements				476,262
Building and Improvements				3,248,696
Gross Amount Carried at End of Period	$ 3,724,958			3,724,958
Accumulated Depreciation	$ 563,666			563,666
Date of Construction or Acquisition	2010
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,724,958
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 563,666
Operating Properties [Member] | 2700 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				912,500
Initial Cost of Buildings				4,721,259
Costs Capitalized Subsequent to Acquisition				346,813
Land and Improvements				912,500
Building and Improvements				5,068,072
Gross Amount Carried at End of Period	$ 5,980,572			5,980,572
Accumulated Depreciation	$ 917,487			917,487
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,980,572
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 917,487
Operating Properties [Member] | 2701 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,275,000
Initial Cost of Buildings				4,649,750
Costs Capitalized Subsequent to Acquisition				646,264
Land and Improvements				1,275,000
Building and Improvements				5,296,014
Gross Amount Carried at End of Period	$ 6,571,014			6,571,014
Accumulated Depreciation	$ 985,434			985,434
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,571,014
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 985,434
Operating Properties [Member] | 2730 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,878,750
Initial Cost of Buildings				10,129,499
Costs Capitalized Subsequent to Acquisition				33,298
Land and Improvements				1,878,750
Building and Improvements				10,162,797
Gross Amount Carried at End of Period	$ 12,041,547			12,041,547
Accumulated Depreciation	$ 1,712,638			1,712,638
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,041,547
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,712,638
Operating Properties [Member] | 2801 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,065,000
Initial Cost of Buildings				6,975,250
Costs Capitalized Subsequent to Acquisition				650,916
Land and Improvements				1,065,000
Building and Improvements				7,626,166
Gross Amount Carried at End of Period	$ 8,691,166			8,691,166
Accumulated Depreciation	$ 1,243,976			1,243,976
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,691,166
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,243,976
Operating Properties [Member] | 3000 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,831,250
Initial Cost of Buildings				10,779,412
Costs Capitalized Subsequent to Acquisition				1,101,098
Land and Improvements				1,831,250
Building and Improvements				11,880,510
Gross Amount Carried at End of Period	$ 13,711,760			13,711,760
Accumulated Depreciation	$ 2,074,452			2,074,452
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,711,760
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,074,452
Operating Properties [Member] | 3005 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,990,000
Initial Cost of Buildings				6,561,540
Costs Capitalized Subsequent to Acquisition				1,169,814
Land and Improvements				1,990,000
Building and Improvements				7,731,354
Gross Amount Carried at End of Period	$ 9,721,354			9,721,354
Accumulated Depreciation	$ 1,329,779			1,329,779
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,721,354
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,329,779
Operating Properties [Member] | 4045 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,418,928
Initial Cost of Buildings				7,511,050
Costs Capitalized Subsequent to Acquisition				632,664
Land and Improvements				1,418,928
Building and Improvements				8,143,714
Gross Amount Carried at End of Period	$ 9,562,642			9,562,642
Accumulated Depreciation	$ 1,414,308			1,414,308
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,562,642
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,414,308
Operating Properties [Member] | 4047 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,279,004
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,399,609
Land and Improvements				1,279,004
Building and Improvements				6,399,609
Gross Amount Carried at End of Period	$ 7,678,613			7,678,613
Accumulated Depreciation	$ 1,083,916			1,083,916
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,678,613
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,083,916
Operating Properties [Member] | 4525 Statesville Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				841,250
Initial Cost of Buildings				5,279,315
Costs Capitalized Subsequent to Acquisition				317,199
Land and Improvements				837,144
Building and Improvements				5,600,620
Gross Amount Carried at End of Period	$ 6,437,764			6,437,764
Accumulated Depreciation	$ 958,955			958,955
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,437,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 958,955
Operating Properties [Member] | 4835 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				3,315,149
Initial Cost of Land				690,750
Initial Cost of Buildings				5,086,388
Costs Capitalized Subsequent to Acquisition				133,402
Land and Improvements				690,750
Building and Improvements				5,219,790
Gross Amount Carried at End of Period	$ 5,910,540			5,910,540
Accumulated Depreciation	$ 763,314			763,314
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,910,540
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 763,314
Operating Properties [Member] | 4925 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				3,339,557
Initial Cost of Land				603,003
Initial Cost of Buildings				4,969,011
Costs Capitalized Subsequent to Acquisition				147,245
Land and Improvements				603,003
Building and Improvements				5,116,256
Gross Amount Carried at End of Period	$ 5,719,259			5,719,259
Accumulated Depreciation	$ 829,242			829,242
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,719,259
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 829,242
Operating Properties [Member] | 5032 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,416,763
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,031,057
Land and Improvements				1,416,763
Building and Improvements				9,031,057
Gross Amount Carried at End of Period	$ 10,447,820			10,447,820
Accumulated Depreciation	$ 469,576			469,576
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,447,820
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 469,576
Operating Properties [Member] | 5033 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				2,845,006
Initial Cost of Land				509,247
Initial Cost of Buildings				4,710,218
Costs Capitalized Subsequent to Acquisition				183,930
Land and Improvements				613,962
Building and Improvements				4,789,433
Gross Amount Carried at End of Period	$ 5,403,395			5,403,395
Accumulated Depreciation	$ 756,635			756,635
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,403,395
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 756,635
Operating Properties [Member] | 5039 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				1,027,500
Initial Cost of Buildings				6,172,807
Costs Capitalized Subsequent to Acquisition				63,150
Land and Improvements				1,027,500
Building and Improvements				6,235,957
Gross Amount Carried at End of Period	$ 7,263,457			7,263,457
Accumulated Depreciation	$ 512,634			512,634
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,263,457
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 512,634
Operating Properties [Member] | 8910 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				527,873
Initial Cost of Buildings				4,959,206
Costs Capitalized Subsequent to Acquisition				360,851
Land and Improvements				527,873
Building and Improvements				5,320,057
Gross Amount Carried at End of Period	$ 5,847,930			5,847,930
Accumulated Depreciation	$ 814,596			814,596
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,847,930
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 814,596
Operating Properties [Member] | 8916 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				557,730
Initial Cost of Buildings				5,785,333
Costs Capitalized Subsequent to Acquisition				534,333
Land and Improvements				557,730
Building and Improvements				6,319,666
Gross Amount Carried at End of Period	$ 6,877,396			6,877,396
Accumulated Depreciation	$ 1,149,035			1,149,035
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,877,396
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,149,035
Operating Properties [Member] | 8924 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				654,713
Initial Cost of Buildings				5,365,823
Costs Capitalized Subsequent to Acquisition				(57,050)
Land and Improvements				654,713
Building and Improvements				5,308,773
Gross Amount Carried at End of Period	$ 5,963,486			5,963,486
Accumulated Depreciation	$ 135,996			135,996
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,963,486
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 135,996
Operating Properties [Member] | 2601 Indian River Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Chesapeake, VA
Encumbrances				0
Initial Cost of Land				1,711,746
Initial Cost of Buildings				10,418,032
Costs Capitalized Subsequent to Acquisition				494,065
Land and Improvements				1,711,746
Building and Improvements				10,912,097
Gross Amount Carried at End of Period	$ 12,623,843			12,623,843
Accumulated Depreciation	$ 1,619,711			1,619,711
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,623,843
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,619,711
Operating Properties [Member] | 1540 S 54th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Cicero, IL
Encumbrances				0
Initial Cost of Land				3,540,236
Initial Cost of Buildings				20,130,552
Costs Capitalized Subsequent to Acquisition				930,603
Land and Improvements				3,540,236
Building and Improvements				21,061,155
Gross Amount Carried at End of Period	$ 24,601,391			24,601,391
Accumulated Depreciation	$ 3,002,292			3,002,292
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 24,601,391
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,002,292
Operating Properties [Member] | 4650 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Cincinnati, OH
Encumbrances				0
Initial Cost of Land				1,030,242
Initial Cost of Buildings				4,003,024
Costs Capitalized Subsequent to Acquisition				365,499
Land and Improvements				1,030,242
Building and Improvements				4,368,522
Gross Amount Carried at End of Period	$ 5,398,764			5,398,764
Accumulated Depreciation	$ 700,153			700,153
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,398,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 700,153
Operating Properties [Member] | 4750 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Cincinnati, OH
Encumbrances				0
Initial Cost of Land				1,138,166
Initial Cost of Buildings				5,914,789
Costs Capitalized Subsequent to Acquisition				230,664
Land and Improvements				1,138,166
Building and Improvements				6,145,453
Gross Amount Carried at End of Period	$ 7,283,619			7,283,619
Accumulated Depreciation	$ 938,347			938,347
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,283,619
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 938,347
Operating Properties [Member] | 9645 Gerwig Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Columbia, MD
Encumbrances				0
Initial Cost of Land				1,915,960
Initial Cost of Buildings				6,461,228
Costs Capitalized Subsequent to Acquisition				322,982
Land and Improvements				1,915,960
Building and Improvements				6,784,210
Gross Amount Carried at End of Period	$ 8,700,170			8,700,170
Accumulated Depreciation	$ 1,097,619			1,097,619
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,700,170
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,097,619
Operating Properties [Member] | 2550 John Glenn Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Columbus, OH
Encumbrances				0
Initial Cost of Land				540,601
Initial Cost of Buildings				5,129,342
Costs Capitalized Subsequent to Acquisition				1,072,989
Land and Improvements				540,601
Building and Improvements				6,202,331
Gross Amount Carried at End of Period	$ 6,742,932			6,742,932
Accumulated Depreciation	$ 823,054			823,054
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,742,932
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 823,054
Operating Properties [Member] | 3800 Twin Creeks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Columbus, OH
Encumbrances				0
Initial Cost of Land				549,393
Initial Cost of Buildings				4,643,302
Costs Capitalized Subsequent to Acquisition				497,947
Land and Improvements				549,393
Building and Improvements				5,141,249
Gross Amount Carried at End of Period	$ 5,690,642			5,690,642
Accumulated Depreciation	$ 735,305			735,305
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,690,642
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 735,305
Operating Properties [Member] | 330 South Royal Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Coppell, TX
Encumbrances				0
Initial Cost of Land				2,091,426
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,407,128
Land and Improvements				2,091,426
Building and Improvements				11,407,128
Gross Amount Carried at End of Period	$ 13,498,554			13,498,554
Accumulated Depreciation	$ 876,255			876,255
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,498,554
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 876,255
Operating Properties [Member] | 455 Airline Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Coppell, TX
Encumbrances				0
Initial Cost of Land				312,701
Initial Cost of Buildings				2,311,531
Costs Capitalized Subsequent to Acquisition				489,922
Land and Improvements				312,701
Building and Improvements				2,801,453
Gross Amount Carried at End of Period	$ 3,114,154			3,114,154
Accumulated Depreciation	$ 475,079			475,079
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,114,154
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 475,079
Operating Properties [Member] | 2130 Baldwin Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Crofton, MD
Encumbrances				0
Initial Cost of Land				3,172,032
Initial Cost of Buildings				7,350,782
Costs Capitalized Subsequent to Acquisition				419,529
Land and Improvements				3,172,032
Building and Improvements				7,770,311
Gross Amount Carried at End of Period	$ 10,942,343			10,942,343
Accumulated Depreciation	$ 1,188,917			1,188,917
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,942,343
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,188,917
Operating Properties [Member] | 329-333 Herrod Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Dayton, NJ
Encumbrances				0
Initial Cost of Land				4,039,559
Initial Cost of Buildings				20,863,051
Costs Capitalized Subsequent to Acquisition				2,286,868
Land and Improvements				4,039,559
Building and Improvements				23,149,919
Gross Amount Carried at End of Period	$ 27,189,478			27,189,478
Accumulated Depreciation	$ 3,326,807			3,326,807
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 27,189,478
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,326,807
Operating Properties [Member] | 1250 Hall Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Deer Park, TX
Encumbrances				0
Initial Cost of Land				829,570
Initial Cost of Buildings				4,778,327
Costs Capitalized Subsequent to Acquisition				121,291
Land and Improvements				831,611
Building and Improvements				4,897,577
Gross Amount Carried at End of Period	$ 5,729,188			5,729,188
Accumulated Depreciation	$ 1,442,762			1,442,762
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,729,188
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,442,762
Operating Properties [Member] | 1680 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duluth, GA
Encumbrances				0
Initial Cost of Land				1,928,412
Initial Cost of Buildings				4,651,819
Costs Capitalized Subsequent to Acquisition				617,290
Land and Improvements				1,928,412
Building and Improvements				5,269,109
Gross Amount Carried at End of Period	$ 7,197,521			7,197,521
Accumulated Depreciation	$ 1,077,104			1,077,104
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,197,521
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,077,104
Operating Properties [Member] | 1700 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duluth, GA
Encumbrances				0
Initial Cost of Land				1,082,072
Initial Cost of Buildings				2,496,599
Costs Capitalized Subsequent to Acquisition				573,982
Land and Improvements				1,082,072
Building and Improvements				3,070,581
Gross Amount Carried at End of Period	$ 4,152,653			4,152,653
Accumulated Depreciation	$ 621,884			621,884
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,152,653
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 621,884
Operating Properties [Member] | 2670 Breckinridge Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duluth, GA
Encumbrances				0
Initial Cost of Land				1,676,415
Initial Cost of Buildings				4,567,592
Costs Capitalized Subsequent to Acquisition				927,539
Land and Improvements				1,676,415
Building and Improvements				5,495,132
Gross Amount Carried at End of Period	$ 7,171,547			7,171,547
Accumulated Depreciation	$ 878,785			878,785
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,171,547
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 878,785
Operating Properties [Member] | 170 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duncan, SC
Encumbrances				0
Initial Cost of Land				598,348
Initial Cost of Buildings				3,643,756
Costs Capitalized Subsequent to Acquisition				573,870
Land and Improvements				598,918
Building and Improvements				4,217,056
Gross Amount Carried at End of Period	$ 4,815,974			4,815,974
Accumulated Depreciation	$ 1,316,005			1,316,005
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,815,974
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,316,005
Operating Properties [Member] | 190 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duncan, SC
Encumbrances				0
Initial Cost of Land				551,663
Initial Cost of Buildings				3,310,993
Costs Capitalized Subsequent to Acquisition				251,604
Land and Improvements				552,211
Building and Improvements				3,562,048
Gross Amount Carried at End of Period	$ 4,114,259			4,114,259
Accumulated Depreciation	$ 1,067,706			1,067,706
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,114,259
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,067,706
Operating Properties [Member] | 265 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duncan, SC
Encumbrances				0
Initial Cost of Land				901,444
Initial Cost of Buildings				5,751,389
Costs Capitalized Subsequent to Acquisition				193,675
Land and Improvements				902,374
Building and Improvements				5,944,134
Gross Amount Carried at End of Period	$ 6,846,508			6,846,508
Accumulated Depreciation	$ 2,077,614			2,077,614
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,846,508
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,077,614
Operating Properties [Member] | 285 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Duncan, SC
Encumbrances				0
Initial Cost of Land				975,433
Initial Cost of Buildings				5,851,990
Costs Capitalized Subsequent to Acquisition				525,729
Land and Improvements				976,393
Building and Improvements				6,376,759
Gross Amount Carried at End of Period	$ 7,353,152			7,353,152
Accumulated Depreciation	$ 1,901,005			1,901,005
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,353,152
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,901,005
Operating Properties [Member] | 1000 Parliament Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				2,229,000
Initial Cost of Buildings				7,064,506
Costs Capitalized Subsequent to Acquisition				792,599
Land and Improvements				2,229,000
Building and Improvements				7,857,105
Gross Amount Carried at End of Period	$ 10,086,105			10,086,105
Accumulated Depreciation	$ 791,102			791,102
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,086,105
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 791,102
Operating Properties [Member] | 4226 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,440,000
Initial Cost of Buildings				7,932,265
Costs Capitalized Subsequent to Acquisition				289,576
Land and Improvements				1,440,000
Building and Improvements				8,221,841
Gross Amount Carried at End of Period	$ 9,661,841			9,661,841
Accumulated Depreciation	$ 954,792			954,792
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,661,841
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 954,792
Operating Properties [Member] | 4227 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,500,000
Initial Cost of Buildings				5,624,030
Costs Capitalized Subsequent to Acquisition				235,182
Land and Improvements				1,500,000
Building and Improvements				5,859,211
Gross Amount Carried at End of Period	$ 7,359,211			7,359,211
Accumulated Depreciation	$ 534,911			534,911
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,359,211
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 534,911
Operating Properties [Member] | 4234 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,440,000
Initial Cost of Buildings				7,356,161
Costs Capitalized Subsequent to Acquisition				(78,204)
Land and Improvements				1,440,000
Building and Improvements				7,277,957
Gross Amount Carried at End of Period	$ 8,717,957			8,717,957
Accumulated Depreciation	$ 768,425			768,425
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,717,957
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 768,425
Operating Properties [Member] | 4300 Emperor Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,576,500
Initial Cost of Buildings				4,240,961
Costs Capitalized Subsequent to Acquisition				5,859
Land and Improvements				1,576,500
Building and Improvements				4,246,820
Gross Amount Carried at End of Period	$ 5,823,320			5,823,320
Accumulated Depreciation	$ 424,518			424,518
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,823,320
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 424,518
Operating Properties [Member] | 1957 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,844,943
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,946,981
Land and Improvements				3,091,046
Building and Improvements				6,700,878
Gross Amount Carried at End of Period	$ 9,791,924			9,791,924
Accumulated Depreciation	$ 206,273			206,273
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,791,924
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 206,273
Operating Properties [Member] | 3169 Dodd Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eagan, MN
Encumbrances				0
Initial Cost of Land				988,594
Initial Cost of Buildings				6,586,907
Costs Capitalized Subsequent to Acquisition				394,649
Land and Improvements				988,594
Building and Improvements				6,981,556
Gross Amount Carried at End of Period	$ 7,970,150			7,970,150
Accumulated Depreciation	$ 1,123,900			1,123,900
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,970,150
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,123,900
Operating Properties [Member] | 3711 Kennebec Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eagan, MN
Encumbrances				0
Initial Cost of Land				999,702
Initial Cost of Buildings				4,042,589
Costs Capitalized Subsequent to Acquisition				(2,670)
Land and Improvements				999,702
Building and Improvements				4,039,919
Gross Amount Carried at End of Period	$ 5,039,621			5,039,621
Accumulated Depreciation	$ 721,854			721,854
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,039,621
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 721,854
Operating Properties [Member] | 917 Lone Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eagan, MN
Encumbrances				0
Initial Cost of Land				1,493,115
Initial Cost of Buildings				6,120,455
Costs Capitalized Subsequent to Acquisition				976,663
Land and Improvements				1,493,115
Building and Improvements				7,097,118
Gross Amount Carried at End of Period	$ 8,590,233			8,590,233
Accumulated Depreciation	$ 1,159,254			1,159,254
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,590,233
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,159,254
Operating Properties [Member] | 10301-10305 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				120,622
Initial Cost of Buildings				1,085,226
Costs Capitalized Subsequent to Acquisition				310,448
Land and Improvements				118,300
Building and Improvements				1,397,996
Gross Amount Carried at End of Period	$ 1,516,296			1,516,296
Accumulated Depreciation	$ 699,145			699,145
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,516,296
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 699,145
Operating Properties [Member] | 10321 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				145,198
Initial Cost of Buildings				1,305,700
Costs Capitalized Subsequent to Acquisition				616,746
Land and Improvements				142,399
Building and Improvements				1,925,245
Gross Amount Carried at End of Period	$ 2,067,644			2,067,644
Accumulated Depreciation	$ 968,278			968,278
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,067,644
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 968,278
Operating Properties [Member] | 10333 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				110,746
Initial Cost of Buildings				995,868
Costs Capitalized Subsequent to Acquisition				285,918
Land and Improvements				108,610
Building and Improvements				1,283,922
Gross Amount Carried at End of Period	$ 1,392,532			1,392,532
Accumulated Depreciation	$ 656,683			656,683
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,392,532
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 656,683
Operating Properties [Member] | 10349-10357 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				275,903
Initial Cost of Buildings				2,481,666
Costs Capitalized Subsequent to Acquisition				954,195
Land and Improvements				270,584
Building and Improvements				3,441,180
Gross Amount Carried at End of Period	$ 3,711,764			3,711,764
Accumulated Depreciation	$ 1,842,058			1,842,058
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,711,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,842,058
Operating Properties [Member] | 10365-10375 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				291,077
Initial Cost of Buildings				2,618,194
Costs Capitalized Subsequent to Acquisition				1,585,889
Land and Improvements				285,464
Building and Improvements				4,209,696
Gross Amount Carried at End of Period	$ 4,495,160			4,495,160
Accumulated Depreciation	$ 1,900,290			1,900,290
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,495,160
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,900,290
Operating Properties [Member] | 10393-10394 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				269,618
Initial Cost of Buildings				2,423,318
Costs Capitalized Subsequent to Acquisition				2,527,379
Land and Improvements				264,419
Building and Improvements				4,955,896
Gross Amount Carried at End of Period	$ 5,220,315			5,220,315
Accumulated Depreciation	$ 2,194,769			2,194,769
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,220,315
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,194,769
Operating Properties [Member] | 7075 Flying Cloud Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				10,232,831
Initial Cost of Buildings				10,855,851
Costs Capitalized Subsequent to Acquisition				4,057,532
Land and Improvements				9,967,306
Building and Improvements				15,178,907
Gross Amount Carried at End of Period	$ 25,146,213			25,146,213
Accumulated Depreciation	$ 3,578,639			3,578,639
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 25,146,213
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,578,639
Operating Properties [Member] | 7078 Shady Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				343,093
Initial Cost of Buildings				3,085,795
Costs Capitalized Subsequent to Acquisition				1,624,923
Land and Improvements				336,481
Building and Improvements				4,717,330
Gross Amount Carried at End of Period	$ 5,053,811			5,053,811
Accumulated Depreciation	$ 2,636,995			2,636,995
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,053,811
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,636,995
Operating Properties [Member] | 1 Truman Drive South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Edison, NJ
Encumbrances				0
Initial Cost of Land				27,862,573
Initial Cost of Buildings				19,426,947
Costs Capitalized Subsequent to Acquisition				703,083
Land and Improvements				27,862,573
Building and Improvements				20,130,030
Gross Amount Carried at End of Period	$ 47,992,603			47,992,603
Accumulated Depreciation	$ 19,993			19,993
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 47,992,603
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 19,993
Operating Properties [Member] | 2250 Arthur Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elk Grove, IL
Encumbrances				0
Initial Cost of Land				1,403,196
Initial Cost of Buildings				2,386,396
Costs Capitalized Subsequent to Acquisition				149,289
Land and Improvements				1,403,196
Building and Improvements				2,535,685
Gross Amount Carried at End of Period	$ 3,938,881			3,938,881
Accumulated Depreciation	$ 392,856			392,856
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,938,881
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 392,856
Operating Properties [Member] | 6600 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elkridge, MD
Encumbrances				0
Initial Cost of Land				3,680,220
Initial Cost of Buildings				14,671,910
Costs Capitalized Subsequent to Acquisition				703,042
Land and Improvements				3,680,220
Building and Improvements				15,374,952
Gross Amount Carried at End of Period	$ 19,055,172			19,055,172
Accumulated Depreciation	$ 1,968,894			1,968,894
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 19,055,172
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,968,894
Operating Properties [Member] | 6675 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elkridge, MD
Encumbrances				0
Initial Cost of Land				2,421,854
Initial Cost of Buildings				9,730,192
Costs Capitalized Subsequent to Acquisition				695,870
Land and Improvements				2,421,854
Building and Improvements				10,426,062
Gross Amount Carried at End of Period	$ 12,847,916			12,847,916
Accumulated Depreciation	$ 1,338,178			1,338,178
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,847,916
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,338,178
Operating Properties [Member] | 7351 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elkridge, MD
Encumbrances				0
Initial Cost of Land				1,897,044
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,419,134
Land and Improvements				3,023,417
Building and Improvements				6,292,761
Gross Amount Carried at End of Period	$ 9,316,178			9,316,178
Accumulated Depreciation	$ 1,996,209			1,996,209
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,316,178
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,996,209
Operating Properties [Member] | 21705-21707 Mississippi Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elwood, IL
Encumbrances				0
Initial Cost of Land				10,594,259
Initial Cost of Buildings				30,329,802
Costs Capitalized Subsequent to Acquisition				1,557,857
Land and Improvements				10,594,259
Building and Improvements				31,887,660
Gross Amount Carried at End of Period	$ 42,481,919			42,481,919
Accumulated Depreciation	$ 5,256,343			5,256,343
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 42,481,919
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 5,256,343
Operating Properties [Member] | 27143 Elwood International Port Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Elwood, IL
Encumbrances				0
Initial Cost of Land				6,022,000
Initial Cost of Buildings				5,612,934
Costs Capitalized Subsequent to Acquisition				587,921
Land and Improvements				6,022,000
Building and Improvements				6,200,855
Gross Amount Carried at End of Period	$ 12,222,855			12,222,855
Accumulated Depreciation	$ 1,087,835			1,087,835
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,222,855
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,087,835
Operating Properties [Member] | 1800 Donaldson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Erlanger, KY
Encumbrances				0
Initial Cost of Land				0
Initial Cost of Buildings				13,211,604
Costs Capitalized Subsequent to Acquisition				762,210
Land and Improvements				0
Building and Improvements				13,973,814
Gross Amount Carried at End of Period	$ 13,973,814			13,973,814
Accumulated Depreciation	$ 3,972,728			3,972,728
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,973,814
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,972,728
Operating Properties [Member] | 6880 Fairfield Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fairfield, OH
Encumbrances				0
Initial Cost of Land				412,136
Initial Cost of Buildings				3,029,177
Costs Capitalized Subsequent to Acquisition				146,616
Land and Improvements				412,136
Building and Improvements				3,175,793
Gross Amount Carried at End of Period	$ 3,587,929			3,587,929
Accumulated Depreciation	$ 450,893			450,893
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,587,929
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 450,893
Operating Properties [Member] | 7000-7018 Fairfield Business [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fairfield, OH
Encumbrances				0
Initial Cost of Land				367,925
Initial Cost of Buildings				2,205,817
Costs Capitalized Subsequent to Acquisition				177,833
Land and Improvements				386,928
Building and Improvements				2,364,647
Gross Amount Carried at End of Period	$ 2,751,575			2,751,575
Accumulated Depreciation	$ 325,215			325,215
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,751,575
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 325,215
Operating Properties [Member] | 10721 Jasmine Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fontana, CA
Encumbrances				0
Initial Cost of Land				11,427,061
Initial Cost of Buildings				23,784,779
Costs Capitalized Subsequent to Acquisition				3,739,838
Land and Improvements				11,427,061
Building and Improvements				27,524,617
Gross Amount Carried at End of Period	$ 38,951,678			38,951,678
Accumulated Depreciation	$ 1,817,042			1,817,042
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 38,951,678
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,817,042
Operating Properties [Member] | 2000 Southpointe Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Forest Park, GA
Encumbrances				0
Initial Cost of Land				756,221
Initial Cost of Buildings				9,115,626
Costs Capitalized Subsequent to Acquisition				662,099
Land and Improvements				756,221
Building and Improvements				9,777,725
Gross Amount Carried at End of Period	$ 10,533,946			10,533,946
Accumulated Depreciation	$ 1,464,610			1,464,610
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,533,946
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,464,610
Operating Properties [Member] | 1400 NW 65th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fort Lauderdale, FL
Encumbrances				0
Initial Cost of Land				545,480
Initial Cost of Buildings				2,540,210
Costs Capitalized Subsequent to Acquisition				86,121
Land and Improvements				545,480
Building and Improvements				2,626,331
Gross Amount Carried at End of Period	$ 3,171,811			3,171,811
Accumulated Depreciation	341,109			341,109
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	3,171,811
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 341,109
Operating Properties [Member] | 6500 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fort Lauderdale, FL
Encumbrances				0
Initial Cost of Land				0
Initial Cost of Buildings				3,064,734
Costs Capitalized Subsequent to Acquisition				521,736
Land and Improvements				0
Building and Improvements				3,586,470
Gross Amount Carried at End of Period	$ 3,586,470			3,586,470
Accumulated Depreciation	$ 540,454			540,454
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,586,470
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 540,454
Operating Properties [Member] | 6501 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fort Lauderdale, FL
Encumbrances				0
Initial Cost of Land				519,984
Initial Cost of Buildings				2,677,465
Costs Capitalized Subsequent to Acquisition				312,381
Land and Improvements				519,984
Building and Improvements				2,989,846
Gross Amount Carried at End of Period	$ 3,509,830			3,509,830
Accumulated Depreciation	$ 346,270			346,270
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,509,830
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 346,270
Operating Properties [Member] | 6600 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fort Lauderdale, FL
Encumbrances				0
Initial Cost of Land				0
Initial Cost of Buildings				2,988,181
Costs Capitalized Subsequent to Acquisition				267,630
Land and Improvements				0
Building and Improvements				3,255,811
Gross Amount Carried at End of Period	$ 3,255,811			3,255,811
Accumulated Depreciation	$ 505,594			505,594
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,255,811
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 505,594
Operating Properties [Member] | 9601 Cosner Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Fredericksburg, VA
Encumbrances				0
Initial Cost of Land				475,262
Initial Cost of Buildings				3,917,234
Costs Capitalized Subsequent to Acquisition				387,315
Land and Improvements				475,262
Building and Improvements				4,304,549
Gross Amount Carried at End of Period	$ 4,779,811			4,779,811
Accumulated Depreciation	$ 2,372,215			2,372,215
Date of Construction or Acquisition	1995
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,779,811
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,372,215
Operating Properties [Member] | 5410 - 5430 Northwest 33rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Ft. Lauderdale, FL
Encumbrances				0
Initial Cost of Land				603,776
Initial Cost of Buildings				4,176,238
Costs Capitalized Subsequent to Acquisition				1,990,114
Land and Improvements				625,111
Building and Improvements				6,145,017
Gross Amount Carried at End of Period	$ 6,770,128			6,770,128
Accumulated Depreciation	$ 3,281,803			3,281,803
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,770,128
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,281,803
Operating Properties [Member] | 12601 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Garden Grove, CA
Encumbrances				0
Initial Cost of Land				2,048,143
Initial Cost of Buildings				1,088,697
Costs Capitalized Subsequent to Acquisition				70,611
Land and Improvements				2,048,143
Building and Improvements				1,159,308
Gross Amount Carried at End of Period	$ 3,207,451			3,207,451
Accumulated Depreciation	$ 276,355			276,355
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,207,451
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 276,355
Operating Properties [Member] | 12641 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Garden Grove, CA
Encumbrances				0
Initial Cost of Land				3,766,822
Initial Cost of Buildings				2,539,214
Costs Capitalized Subsequent to Acquisition				133,026
Land and Improvements				3,766,822
Building and Improvements				2,672,240
Gross Amount Carried at End of Period	$ 6,439,062			6,439,062
Accumulated Depreciation	$ 408,964			408,964
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,439,062
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 408,964
Operating Properties [Member] | 12681-12691 Pala Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Garden Grove, CA
Encumbrances				0
Initial Cost of Land				5,221,102
Initial Cost of Buildings				3,225,596
Costs Capitalized Subsequent to Acquisition				83,715
Land and Improvements				5,220,148
Building and Improvements				3,310,265
Gross Amount Carried at End of Period	$ 8,530,413			8,530,413
Accumulated Depreciation	$ 359,715			359,715
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,530,413
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 359,715
Operating Properties [Member] | 850 S Jupiter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Garland, TX
Encumbrances				0
Initial Cost of Land				799,707
Initial Cost of Buildings				6,122,065
Costs Capitalized Subsequent to Acquisition				506,894
Land and Improvements				799,707
Building and Improvements				6,628,959
Gross Amount Carried at End of Period	$ 7,428,666			7,428,666
Accumulated Depreciation	$ 1,005,200			1,005,200
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,428,666
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,005,200
Operating Properties [Member] | 2510 W Main Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Grand Prairie, TX
Encumbrances				0
Initial Cost of Land				1,785,741
Initial Cost of Buildings				11,158,818
Costs Capitalized Subsequent to Acquisition				1,677,983
Land and Improvements				1,785,741
Building and Improvements				12,836,801
Gross Amount Carried at End of Period	$ 14,622,542			14,622,542
Accumulated Depreciation	$ 2,144,063			2,144,063
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,622,542
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,144,063
Operating Properties [Member] | 4251 North Highway 121 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Grapevine, TX
Encumbrances				0
Initial Cost of Land				1,165,780
Initial Cost of Buildings				7,799,270
Costs Capitalized Subsequent to Acquisition				422,871
Land and Improvements				1,165,780
Building and Improvements				8,222,140
Gross Amount Carried at End of Period	$ 9,387,920			9,387,920
Accumulated Depreciation	$ 1,322,370			1,322,370
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,387,920
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,322,370
Operating Properties [Member] | 1150 Pleasant Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greensboro, NC
Encumbrances				0
Initial Cost of Land				1,547,811
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				14,336,534
Land and Improvements				3,712,683
Building and Improvements				12,171,662
Gross Amount Carried at End of Period	$ 15,884,345			15,884,345
Accumulated Depreciation	$ 2,930,846			2,930,846
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,884,345
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,930,846
Operating Properties [Member] | 25 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greenville, SC
Encumbrances				0
Initial Cost of Land				288,823
Initial Cost of Buildings				3,441,512
Costs Capitalized Subsequent to Acquisition				(60,552)
Land and Improvements				288,823
Building and Improvements				3,380,960
Gross Amount Carried at End of Period	$ 3,669,783			3,669,783
Accumulated Depreciation	$ 386,571			386,571
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,669,783
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 386,571
Operating Properties [Member] | 45 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greenville, SC
Encumbrances				0
Initial Cost of Land				818,114
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,737,211
Land and Improvements				825,529
Building and Improvements				4,729,796
Gross Amount Carried at End of Period	$ 5,555,325			5,555,325
Accumulated Depreciation	$ 1,273,122			1,273,122
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,555,325
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,273,122
Operating Properties [Member] | 2011 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greenwood, IN
Encumbrances				0
Initial Cost of Land				223,702
Initial Cost of Buildings				3,574,142
Costs Capitalized Subsequent to Acquisition				348,881
Land and Improvements				223,702
Building and Improvements				3,923,023
Gross Amount Carried at End of Period	$ 4,146,725			4,146,725
Accumulated Depreciation	$ 673,141			673,141
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,146,725
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 673,141
Operating Properties [Member] | 2121 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greenwood, IN
Encumbrances				0
Initial Cost of Land				272,823
Initial Cost of Buildings				3,606,920
Costs Capitalized Subsequent to Acquisition				425,631
Land and Improvements				272,823
Building and Improvements				4,032,552
Gross Amount Carried at End of Period	$ 4,305,375			4,305,375
Accumulated Depreciation	$ 868,917			868,917
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,305,375
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 868,917
Operating Properties [Member] | 800 Commerce Parkway West Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greenwood, IN
Encumbrances				0
Initial Cost of Land				1,374,664
Initial Cost of Buildings				29,963,830
Costs Capitalized Subsequent to Acquisition				2,112,538
Land and Improvements				1,374,664
Building and Improvements				32,076,368
Gross Amount Carried at End of Period	$ 33,451,032			33,451,032
Accumulated Depreciation	$ 4,662,009			4,662,009
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 33,451,032
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,662,009
Operating Properties [Member] | 110 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				555,549
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,339,922
Land and Improvements				1,241,531
Building and Improvements				5,653,940
Gross Amount Carried at End of Period	$ 6,895,471			6,895,471
Accumulated Depreciation	$ 472,790			472,790
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,895,471
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 472,790
Operating Properties [Member] | 140 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				1,243,100
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,460,810
Land and Improvements				1,255,751
Building and Improvements				6,448,159
Gross Amount Carried at End of Period	$ 7,703,910			7,703,910
Accumulated Depreciation	$ 594,631			594,631
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,703,910
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 594,631
Operating Properties [Member] | 11835 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hagerstown, MD
Encumbrances				0
Initial Cost of Land				14,121,622
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				23,024,333
Land and Improvements				14,121,622
Building and Improvements				23,024,333
Gross Amount Carried at End of Period	$ 37,145,955			37,145,955
Accumulated Depreciation	$ 2,135,910			2,135,910
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 37,145,955
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,135,910
Operating Properties [Member] | 11841 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hagerstown, MD
Encumbrances				0
Initial Cost of Land				3,356,207
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				30,679,055
Land and Improvements				9,741,685
Building and Improvements				24,293,577
Gross Amount Carried at End of Period	$ 34,035,262			34,035,262
Accumulated Depreciation	$ 6,578,678			6,578,678
Date of Construction or Acquisition	2008
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 34,035,262
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,578,678
Operating Properties [Member] | 1560 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover Park, IL
Encumbrances				0
Initial Cost of Land				2,639,734
Initial Cost of Buildings				12,310,741
Costs Capitalized Subsequent to Acquisition				1,072,313
Land and Improvements				2,639,734
Building and Improvements				13,383,054
Gross Amount Carried at End of Period	$ 16,022,788			16,022,788
Accumulated Depreciation	$ 1,884,363			1,884,363
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 16,022,788
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,884,363
Operating Properties [Member] | 1575 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover Park, IL
Encumbrances				0
Initial Cost of Land				3,293,284
Initial Cost of Buildings				17,235,926
Costs Capitalized Subsequent to Acquisition				1,174,459
Land and Improvements				3,293,284
Building and Improvements				18,410,385
Gross Amount Carried at End of Period	$ 21,703,669			21,703,669
Accumulated Depreciation	$ 2,655,120			2,655,120
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,703,669
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,655,120
Operating Properties [Member] | 7361 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover, MD
Encumbrances				0
Initial Cost of Land				2,245,187
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,668,306
Land and Improvements				3,822,710
Building and Improvements				8,090,783
Gross Amount Carried at End of Period	$ 11,913,493			11,913,493
Accumulated Depreciation	$ 1,741,059			1,741,059
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,913,493
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,741,059
Operating Properties [Member] | 7460 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover, MD
Encumbrances				0
Initial Cost of Land				3,785,446
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,128,924
Land and Improvements				3,796,023
Building and Improvements				8,118,347
Gross Amount Carried at End of Period	$ 11,914,370			11,914,370
Accumulated Depreciation	$ 587,264			587,264
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,914,370
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 587,264
Operating Properties [Member] | 7462 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover, MD
Encumbrances				0
Initial Cost of Land				4,059,337
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,491,548
Land and Improvements				4,070,629
Building and Improvements				7,480,256
Gross Amount Carried at End of Period	$ 11,550,885			11,550,885
Accumulated Depreciation	$ 511,893			511,893
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,550,885
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 511,893
Operating Properties [Member] | 500 McCarthy Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Harrisburg, PA
Encumbrances				0
Initial Cost of Land				5,194,872
Initial Cost of Buildings				19,991,436
Costs Capitalized Subsequent to Acquisition				5,020,100
Land and Improvements				5,687,013
Building and Improvements				24,519,395
Gross Amount Carried at End of Period	$ 30,206,408			30,206,408
Accumulated Depreciation	$ 9,042,285			9,042,285
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 30,206,408
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 9,042,285
Operating Properties [Member] | 600 Industrial Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Harrisburg, PA
Encumbrances				0
Initial Cost of Land				7,743,800
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				27,803,943
Land and Improvements				9,368,557
Building and Improvements				26,179,186
Gross Amount Carried at End of Period	$ 35,547,743			35,547,743
Accumulated Depreciation	$ 7,808,361			7,808,361
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 35,547,743
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,808,361
Operating Properties [Member] | 7195 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Harrisburg, PA
Encumbrances				0
Initial Cost of Land				464,534
Initial Cost of Buildings				6,066,272
Costs Capitalized Subsequent to Acquisition				251,813
Land and Improvements				464,534
Building and Improvements				6,318,085
Gross Amount Carried at End of Period	$ 6,782,619			6,782,619
Accumulated Depreciation	$ 850,896			850,896
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,782,619
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 850,896
Operating Properties [Member] | 7253 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Harrisburg, PA
Encumbrances				0
Initial Cost of Land				954,130
Initial Cost of Buildings				10,585,367
Costs Capitalized Subsequent to Acquisition				583,272
Land and Improvements				954,130
Building and Improvements				11,168,639
Gross Amount Carried at End of Period	$ 12,122,769			12,122,769
Accumulated Depreciation	$ 1,466,551			1,466,551
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,122,769
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,466,551
Operating Properties [Member] | 12537 Cerise Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hawthorne, CA
Encumbrances				0
Initial Cost of Land				2,203,194
Initial Cost of Buildings				5,758,809
Costs Capitalized Subsequent to Acquisition				1,461,971
Land and Improvements				2,203,194
Building and Improvements				7,220,780
Gross Amount Carried at End of Period	$ 9,423,974			9,423,974
Accumulated Depreciation	$ 728,059			728,059
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,423,974
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 728,059
Operating Properties [Member] | 1010 Petersburg Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hebron, KY
Encumbrances				0
Initial Cost of Land				305,471
Initial Cost of Buildings				5,434,505
Costs Capitalized Subsequent to Acquisition				(819,546)
Land and Improvements				305,471
Building and Improvements				4,614,959
Gross Amount Carried at End of Period	$ 4,920,430			4,920,430
Accumulated Depreciation	$ 729,928			729,928
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,920,430
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 729,928
Operating Properties [Member] | 785 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hebron, KY
Encumbrances				0
Initial Cost of Land				401,410
Initial Cost of Buildings				3,087,899
Costs Capitalized Subsequent to Acquisition				511,831
Land and Improvements				401,410
Building and Improvements				3,599,730
Gross Amount Carried at End of Period	$ 4,001,140			4,001,140
Accumulated Depreciation	$ 851,287			851,287
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,001,140
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 851,287
Operating Properties [Member] | 805 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hebron, KY
Encumbrances				0
Initial Cost of Land				292,096
Initial Cost of Buildings				2,502,486
Costs Capitalized Subsequent to Acquisition				163,832
Land and Improvements				292,096
Building and Improvements				2,666,317
Gross Amount Carried at End of Period	$ 2,958,413			2,958,413
Accumulated Depreciation	$ 460,511			460,511
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,958,413
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 460,511
Operating Properties [Member] | 825 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hebron, KY
Encumbrances				0
Initial Cost of Land				370,149
Initial Cost of Buildings				3,095,116
Costs Capitalized Subsequent to Acquisition				435,793
Land and Improvements				370,149
Building and Improvements				3,530,910
Gross Amount Carried at End of Period	$ 3,901,059			3,901,059
Accumulated Depreciation	$ 599,942			599,942
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,901,059
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 599,942
Operating Properties [Member] | 845 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hebron, KY
Encumbrances				0
Initial Cost of Land				444,318
Initial Cost of Buildings				3,811,889
Costs Capitalized Subsequent to Acquisition				316,672
Land and Improvements				444,318
Building and Improvements				4,128,561
Gross Amount Carried at End of Period	$ 4,572,879			4,572,879
Accumulated Depreciation	$ 666,370			666,370
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,572,879
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 666,370
Operating Properties [Member] | 4198 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				94,274
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,276,671
Land and Improvements				791,880
Building and Improvements				5,579,065
Gross Amount Carried at End of Period	$ 6,370,945			6,370,945
Accumulated Depreciation	$ 1,621,575			1,621,575
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,370,945
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,621,575
Operating Properties [Member] | 4183 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				122,203
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,214,906
Land and Improvements				526,266
Building and Improvements				2,810,843
Gross Amount Carried at End of Period	$ 3,337,109			3,337,109
Accumulated Depreciation	$ 1,311,124			1,311,124
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,337,109
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,311,124
Operating Properties [Member] | 4189 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				100,106
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,584,103
Land and Improvements				431,106
Building and Improvements				3,253,103
Gross Amount Carried at End of Period	$ 3,684,209			3,684,209
Accumulated Depreciation	$ 1,652,112			1,652,112
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,684,209
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,652,112
Operating Properties [Member] | 4193 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				107,586
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,391,727
Land and Improvements				505,700
Building and Improvements				2,993,613
Gross Amount Carried at End of Period	$ 3,499,313			3,499,313
Accumulated Depreciation	$ 968,743			968,743
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,499,313
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 968,743
Operating Properties [Member] | 4328, 4336 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				521,122
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,624,655
Land and Improvements				825,092
Building and Improvements				5,320,685
Gross Amount Carried at End of Period	$ 6,145,777			6,145,777
Accumulated Depreciation	$ 2,596,135			2,596,135
Date of Construction or Acquisition	1995
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,145,777
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,596,135
Operating Properties [Member] | 4344 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				484,001
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,152,416
Land and Improvements				173,623
Building and Improvements				3,462,794
Gross Amount Carried at End of Period	$ 3,636,417			3,636,417
Accumulated Depreciation	$ 1,866,989			1,866,989
Date of Construction or Acquisition	1996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,636,417
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,866,989
Operating Properties [Member] | 4380 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				282,996
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,209,713
Land and Improvements				283,368
Building and Improvements				2,209,341
Gross Amount Carried at End of Period	$ 2,492,709			2,492,709
Accumulated Depreciation	$ 1,199,039			1,199,039
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,492,709
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,199,039
Operating Properties [Member] | 4388 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				143,661
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,214,818
Land and Improvements				132,655
Building and Improvements				1,225,824
Gross Amount Carried at End of Period	$ 1,358,479			1,358,479
Accumulated Depreciation	$ 653,753			653,753
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,358,479
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 653,753
Operating Properties [Member] | 4475 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				748,693
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,806,962
Land and Improvements				1,525,421
Building and Improvements				6,030,234
Gross Amount Carried at End of Period	$ 7,555,655			7,555,655
Accumulated Depreciation	$ 1,429,865			1,429,865
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,555,655
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,429,865
Operating Properties [Member] | 4500 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				230,622
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,757,316
Land and Improvements				231,692
Building and Improvements				2,756,246
Gross Amount Carried at End of Period	$ 2,987,938			2,987,938
Accumulated Depreciation	$ 1,618,070			1,618,070
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,987,938
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,618,070
Operating Properties [Member] | 4501 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				319,289
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,133,118
Land and Improvements				320,450
Building and Improvements				3,131,957
Gross Amount Carried at End of Period	$ 3,452,407			3,452,407
Accumulated Depreciation	$ 1,976,183			1,976,183
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,452,407
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,976,183
Operating Properties [Member] | 4523 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				234,564
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,319,368
Land and Improvements				235,698
Building and Improvements				3,318,234
Gross Amount Carried at End of Period	$ 3,553,932			3,553,932
Accumulated Depreciation	$ 2,236,810			2,236,810
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,553,932
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,236,810
Operating Properties [Member] | 4524 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				182,810
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,838,325
Land and Improvements				183,888
Building and Improvements				2,837,247
Gross Amount Carried at End of Period	$ 3,021,135			3,021,135
Accumulated Depreciation	$ 1,804,718			1,804,718
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,021,135
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,804,718
Operating Properties [Member] | 9600 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				405,362
Initial Cost of Buildings				1,146,546
Costs Capitalized Subsequent to Acquisition				451,093
Land and Improvements				405,362
Building and Improvements				1,597,639
Gross Amount Carried at End of Period	$ 2,003,001			2,003,001
Accumulated Depreciation	$ 775,969			775,969
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,003,001
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 775,969
Operating Properties [Member] | Unit 5 Logix Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hinckley, UK
Encumbrances				0
Initial Cost of Land				10,547,677
Initial Cost of Buildings				29,691,911
Costs Capitalized Subsequent to Acquisition				(7,396,097)
Land and Improvements				8,608,489
Building and Improvements				24,235,002
Gross Amount Carried at End of Period	$ 32,843,491			32,843,491
Accumulated Depreciation	$ 3,350,056			3,350,056
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 32,843,491
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,350,056
Operating Properties [Member] | 1000 South Loop West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				509,351
Initial Cost of Buildings				3,549,504
Costs Capitalized Subsequent to Acquisition				938,122
Land and Improvements				509,351
Building and Improvements				4,487,626
Gross Amount Carried at End of Period	$ 4,996,977			4,996,977
Accumulated Depreciation	$ 835,033			835,033
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,996,977
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 835,033
Operating Properties [Member] | 10241 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				558,491
Initial Cost of Buildings				5,740,552
Costs Capitalized Subsequent to Acquisition				139,500
Land and Improvements				558,491
Building and Improvements				5,880,052
Gross Amount Carried at End of Period	$ 6,438,543			6,438,543
Accumulated Depreciation	$ 753,250			753,250
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,438,543
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 753,250
Operating Properties [Member] | 10245 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				426,927
Initial Cost of Buildings				3,460,513
Costs Capitalized Subsequent to Acquisition				380,296
Land and Improvements				426,927
Building and Improvements				3,840,809
Gross Amount Carried at End of Period	$ 4,267,736			4,267,736
Accumulated Depreciation	$ 795,963			795,963
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,267,736
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 795,963
Operating Properties [Member] | 10301 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				545,501
Initial Cost of Buildings				2,927,700
Costs Capitalized Subsequent to Acquisition				961,929
Land and Improvements				545,501
Building and Improvements				3,889,628
Gross Amount Carried at End of Period	$ 4,435,129			4,435,129
Accumulated Depreciation	$ 585,432			585,432
Date of Construction or Acquisition	2010
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,435,129
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 585,432
Operating Properties [Member] | 10305 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,340,609
Initial Cost of Buildings				7,489,720
Costs Capitalized Subsequent to Acquisition				2,951,546
Land and Improvements				1,340,609
Building and Improvements				10,441,265
Gross Amount Carried at End of Period	$ 11,781,874			11,781,874
Accumulated Depreciation	$ 2,361,657			2,361,657
Date of Construction or Acquisition	2010
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,781,874
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,361,657
Operating Properties [Member] | 1050 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				973,482
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,531,792
Land and Improvements				992,093
Building and Improvements				3,513,181
Gross Amount Carried at End of Period	$ 4,505,274			4,505,274
Accumulated Depreciation	$ 252,833			252,833
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,505,274
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 252,833
Operating Properties [Member] | 10607 Haddington Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				201,469
Initial Cost of Buildings				1,631,561
Costs Capitalized Subsequent to Acquisition				132,748
Land and Improvements				201,469
Building and Improvements				1,764,310
Gross Amount Carried at End of Period	$ 1,965,779			1,965,779
Accumulated Depreciation	$ 282,662			282,662
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,965,779
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 282,662
Operating Properties [Member] | 10735 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,110,988
Initial Cost of Buildings				6,351,946
Costs Capitalized Subsequent to Acquisition				3,147,449
Land and Improvements				1,135,483
Building and Improvements				9,474,900
Gross Amount Carried at End of Period	$ 10,610,383			10,610,383
Accumulated Depreciation	$ 3,426,368			3,426,368
Date of Construction or Acquisition	2000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,610,383
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,426,368
Operating Properties [Member] | 10739 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				797,931
Initial Cost of Buildings				5,950,894
Costs Capitalized Subsequent to Acquisition				339,014
Land and Improvements				799,560
Building and Improvements				6,288,279
Gross Amount Carried at End of Period	$ 7,087,839			7,087,839
Accumulated Depreciation	$ 2,419,437			2,419,437
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,087,839
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,419,437
Operating Properties [Member] | 11201 Greens Crossing Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,006,194
Initial Cost of Buildings				5,412,584
Costs Capitalized Subsequent to Acquisition				2,620,073
Land and Improvements				1,008,542
Building and Improvements				8,030,309
Gross Amount Carried at End of Period	$ 9,038,851			9,038,851
Accumulated Depreciation	$ 2,509,545			2,509,545
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,038,851
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,509,545
Operating Properties [Member] | 11220 Ella Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,505,855
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,417,101
Land and Improvements				1,534,644
Building and Improvements				7,388,312
Gross Amount Carried at End of Period	$ 8,922,956			8,922,956
Accumulated Depreciation	$ 529,511			529,511
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,922,956
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 529,511
Operating Properties [Member] | 1283 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				80,730
Initial Cost of Buildings				870,656
Costs Capitalized Subsequent to Acquisition				145,557
Land and Improvements				80,730
Building and Improvements				1,016,213
Gross Amount Carried at End of Period	$ 1,096,943			1,096,943
Accumulated Depreciation	$ 178,472			178,472
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,096,943
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 178,472
Operating Properties [Member] | 1287 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				146,654
Initial Cost of Buildings				1,620,780
Costs Capitalized Subsequent to Acquisition				55,679
Land and Improvements				146,654
Building and Improvements				1,676,458
Gross Amount Carried at End of Period	$ 1,823,112			1,823,112
Accumulated Depreciation	$ 280,919			280,919
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,823,112
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 280,919
Operating Properties [Member] | 1291 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				510,102
Initial Cost of Buildings				4,129,042
Costs Capitalized Subsequent to Acquisition				586,888
Land and Improvements				510,102
Building and Improvements				4,715,930
Gross Amount Carried at End of Period	$ 5,226,032			5,226,032
Accumulated Depreciation	$ 757,450			757,450
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,226,032
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 757,450
Operating Properties [Member] | 1416 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				218,850
Initial Cost of Buildings				1,639,902
Costs Capitalized Subsequent to Acquisition				558,311
Land and Improvements				218,850
Building and Improvements				2,198,212
Gross Amount Carried at End of Period	$ 2,417,062			2,417,062
Accumulated Depreciation	$ 407,593			407,593
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,417,062
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 407,593
Operating Properties [Member] | 1420 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				211,279
Initial Cost of Buildings				1,554,156
Costs Capitalized Subsequent to Acquisition				262,982
Land and Improvements				211,279
Building and Improvements				1,817,138
Gross Amount Carried at End of Period	$ 2,028,417			2,028,417
Accumulated Depreciation	$ 253,509			253,509
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,028,417
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 253,509
Operating Properties [Member] | 14200 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,396,794
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,960,376
Land and Improvements				1,699,632
Building and Improvements				4,657,538
Gross Amount Carried at End of Period	$ 6,357,170			6,357,170
Accumulated Depreciation	$ 658,529			658,529
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,357,170
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 658,529
Operating Properties [Member] | 1424 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				283,107
Initial Cost of Buildings				2,077,323
Costs Capitalized Subsequent to Acquisition				413,088
Land and Improvements				283,107
Building and Improvements				2,490,411
Gross Amount Carried at End of Period	$ 2,773,518			2,773,518
Accumulated Depreciation	$ 377,599			377,599
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,773,518
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 377,599
Operating Properties [Member] | 1428 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				367,446
Initial Cost of Buildings				1,952,453
Costs Capitalized Subsequent to Acquisition				461,116
Land and Improvements				367,446
Building and Improvements				2,413,568
Gross Amount Carried at End of Period	$ 2,781,014			2,781,014
Accumulated Depreciation	$ 323,367			323,367
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,781,014
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 323,367
Operating Properties [Member] | 14300 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,377,193
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,680,144
Land and Improvements				1,405,899
Building and Improvements				5,651,438
Gross Amount Carried at End of Period	$ 7,057,337			7,057,337
Accumulated Depreciation	$ 677,019			677,019
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,057,337
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 677,019
Operating Properties [Member] | 14400 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,830,419
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,240,317
Land and Improvements				1,861,540
Building and Improvements				7,209,196
Gross Amount Carried at End of Period	$ 9,070,736			9,070,736
Accumulated Depreciation	$ 1,763,306			1,763,306
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,070,736
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,763,306
Operating Properties [Member] | 15102 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				755,121
Initial Cost of Buildings				3,155,774
Costs Capitalized Subsequent to Acquisition				247,670
Land and Improvements				755,121
Building and Improvements				3,403,444
Gross Amount Carried at End of Period	$ 4,158,565			4,158,565
Accumulated Depreciation	$ 585,277			585,277
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,158,565
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 585,277
Operating Properties [Member] | 15150 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				418,580
Initial Cost of Buildings				1,564,587
Costs Capitalized Subsequent to Acquisition				246,785
Land and Improvements				418,580
Building and Improvements				1,811,372
Gross Amount Carried at End of Period	$ 2,229,952			2,229,952
Accumulated Depreciation	$ 320,777			320,777
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,229,952
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 320,777
Operating Properties [Member] | 16330 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,540,109
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,529,156
Land and Improvements				1,966,472
Building and Improvements				8,102,793
Gross Amount Carried at End of Period	$ 10,069,265			10,069,265
Accumulated Depreciation	$ 824,138			824,138
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,069,265
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 824,138
Operating Properties [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				438,853
Initial Cost of Buildings				3,030,396
Costs Capitalized Subsequent to Acquisition				932,746
Land and Improvements				438,853
Building and Improvements				3,963,142
Gross Amount Carried at End of Period	$ 4,401,995			4,401,995
Accumulated Depreciation	$ 1,923,396			1,923,396
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,401,995
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,923,396
Operating Properties [Member] | 16445 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				363,339
Initial Cost of Buildings				2,509,186
Costs Capitalized Subsequent to Acquisition				332,364
Land and Improvements				363,339
Building and Improvements				2,841,550
Gross Amount Carried at End of Period	$ 3,204,889			3,204,889
Accumulated Depreciation	$ 1,391,813			1,391,813
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,204,889
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,391,813
Operating Properties [Member] | 1646 Rankin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				329,961
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,128,643
Land and Improvements				592,234
Building and Improvements				4,866,370
Gross Amount Carried at End of Period	$ 5,458,604			5,458,604
Accumulated Depreciation	$ 1,625,011			1,625,011
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,458,604
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,625,011
Operating Properties [Member] | 1655 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				197,226
Initial Cost of Buildings				935,036
Costs Capitalized Subsequent to Acquisition				528,775
Land and Improvements				197,226
Building and Improvements				1,463,811
Gross Amount Carried at End of Period	$ 1,661,037			1,661,037
Accumulated Depreciation	$ 331,956			331,956
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,661,037
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 331,956
Operating Properties [Member] | 16580 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				289,000
Initial Cost of Buildings				3,559,857
Costs Capitalized Subsequent to Acquisition				1,318,020
Land and Improvements				289,000
Building and Improvements				4,877,878
Gross Amount Carried at End of Period	$ 5,166,878			5,166,878
Accumulated Depreciation	$ 2,054,844			2,054,844
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,166,878
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,054,844
Operating Properties [Member] | 16602 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				284,403
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,462,115
Land and Improvements				503,779
Building and Improvements				5,242,739
Gross Amount Carried at End of Period	$ 5,746,518			5,746,518
Accumulated Depreciation	$ 1,629,717			1,629,717
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,746,518
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,629,717
Operating Properties [Member] | 16605 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				298,999
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,424,045
Land and Improvements				496,186
Building and Improvements				3,226,858
Gross Amount Carried at End of Period	$ 3,723,044			3,723,044
Accumulated Depreciation	$ 1,272,564			1,272,564
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,723,044
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,272,564
Operating Properties [Member] | 1665 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				452,439
Initial Cost of Buildings				2,016,585
Costs Capitalized Subsequent to Acquisition				532,837
Land and Improvements				452,439
Building and Improvements				2,549,421
Gross Amount Carried at End of Period	$ 3,001,860			3,001,860
Accumulated Depreciation	$ 340,160			340,160
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,001,860
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 340,160
Operating Properties [Member] | 16680 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				311,952
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,714,436
Land and Improvements				492,869
Building and Improvements				3,533,519
Gross Amount Carried at End of Period	$ 4,026,388			4,026,388
Accumulated Depreciation	$ 863,726			863,726
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,026,388
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 863,726
Operating Properties [Member] | 16685 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				414,691
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,455,433
Land and Improvements				414,691
Building and Improvements				2,455,433
Gross Amount Carried at End of Period	$ 2,870,124			2,870,124
Accumulated Depreciation	$ 820,383			820,383
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,870,124
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 820,383
Operating Properties [Member] | 1755 Trans Central Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				293,534
Initial Cost of Buildings				3,036,269
Costs Capitalized Subsequent to Acquisition				1,254,342
Land and Improvements				306,147
Building and Improvements				4,277,998
Gross Amount Carried at End of Period	$ 4,584,145			4,584,145
Accumulated Depreciation	$ 1,661,466			1,661,466
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,584,145
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,661,466
Operating Properties [Member] | 4301 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				226,973
Initial Cost of Buildings				1,174,979
Costs Capitalized Subsequent to Acquisition				142,669
Land and Improvements				226,973
Building and Improvements				1,317,648
Gross Amount Carried at End of Period	$ 1,544,621			1,544,621
Accumulated Depreciation	$ 279,123			279,123
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,544,621
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 279,123
Operating Properties [Member] | 4401 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				244,240
Initial Cost of Buildings				1,412,622
Costs Capitalized Subsequent to Acquisition				164,426
Land and Improvements				244,240
Building and Improvements				1,577,048
Gross Amount Carried at End of Period	$ 1,821,288			1,821,288
Accumulated Depreciation	$ 322,106			322,106
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,821,288
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 322,106
Operating Properties [Member] | 4501 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				252,907
Initial Cost of Buildings				1,504,053
Costs Capitalized Subsequent to Acquisition				106,793
Land and Improvements				252,907
Building and Improvements				1,610,846
Gross Amount Carried at End of Period	$ 1,863,753			1,863,753
Accumulated Depreciation	$ 223,579			223,579
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,863,753
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 223,579
Operating Properties [Member] | 5200 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,519,458
Initial Cost of Buildings				7,135,548
Costs Capitalized Subsequent to Acquisition				3,704,347
Land and Improvements				1,520,074
Building and Improvements				10,839,279
Gross Amount Carried at End of Period	$ 12,359,353			12,359,353
Accumulated Depreciation	$ 3,591,298			3,591,298
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,359,353
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,591,298
Operating Properties [Member] | 5250 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				2,173,287
Initial Cost of Buildings				8,868,256
Costs Capitalized Subsequent to Acquisition				2,845,225
Land and Improvements				2,173,942
Building and Improvements				11,712,826
Gross Amount Carried at End of Period	$ 13,886,768			13,886,768
Accumulated Depreciation	$ 2,982,334			2,982,334
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,886,768
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,982,334
Operating Properties [Member] | 5500 N. Sam Houston Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,243,541
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,356,567
Land and Improvements				1,513,152
Building and Improvements				6,086,956
Gross Amount Carried at End of Period	$ 7,600,108			7,600,108
Accumulated Depreciation	$ 1,284,483			1,284,483
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,600,108
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,284,483
Operating Properties [Member] | 8017 Pinemont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				900,953
Initial Cost of Buildings				5,323,727
Costs Capitalized Subsequent to Acquisition				442,546
Land and Improvements				900,953
Building and Improvements				5,766,273
Gross Amount Carried at End of Period	$ 6,667,226			6,667,226
Accumulated Depreciation	$ 756,953			756,953
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,667,226
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 756,953
Operating Properties [Member] | 8272 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				530,494
Initial Cost of Buildings				4,108,626
Costs Capitalized Subsequent to Acquisition				302,930
Land and Improvements				530,494
Building and Improvements				4,411,556
Gross Amount Carried at End of Period	$ 4,942,050			4,942,050
Accumulated Depreciation	$ 669,352			669,352
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,942,050
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 669,352
Operating Properties [Member] | 8282 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				450,422
Initial Cost of Buildings				3,304,942
Costs Capitalized Subsequent to Acquisition				1,085,091
Land and Improvements				450,422
Building and Improvements				4,390,033
Gross Amount Carried at End of Period	$ 4,840,455			4,840,455
Accumulated Depreciation	$ 770,811			770,811
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,840,455
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 770,811
Operating Properties [Member] | 8301 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				4,515,862
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				26,996,308
Land and Improvements				7,083,514
Building and Improvements				24,428,656
Gross Amount Carried at End of Period	$ 31,512,170			31,512,170
Accumulated Depreciation	$ 6,261,457			6,261,457
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 31,512,170
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,261,457
Operating Properties [Member] | 8303 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				4,613,370
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				16,413,097
Land and Improvements				4,858,863
Building and Improvements				16,167,604
Gross Amount Carried at End of Period	$ 21,026,467			21,026,467
Accumulated Depreciation	$ 998,943			998,943
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,026,467
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 998,943
Operating Properties [Member] | 850 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				2,893,405
Initial Cost of Buildings				11,593,197
Costs Capitalized Subsequent to Acquisition				2,915,414
Land and Improvements				2,899,861
Building and Improvements				14,502,154
Gross Amount Carried at End of Period	$ 17,402,015			17,402,015
Accumulated Depreciation	$ 3,779,158			3,779,158
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 17,402,015
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,779,158
Operating Properties [Member] | 860 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,399,365
Initial Cost of Buildings				6,344,650
Costs Capitalized Subsequent to Acquisition				1,637,084
Land and Improvements				1,374,012
Building and Improvements				8,007,087
Gross Amount Carried at End of Period	$ 9,381,099			9,381,099
Accumulated Depreciation	$ 2,105,831			2,105,831
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,381,099
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,105,831
Operating Properties [Member] | 8801-19 & 8821-49 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				2,290,001
Initial Cost of Buildings				15,297,141
Costs Capitalized Subsequent to Acquisition				4,097,089
Land and Improvements				2,290,002
Building and Improvements				19,394,229
Gross Amount Carried at End of Period	$ 21,684,231			21,684,231
Accumulated Depreciation	$ 6,703,077			6,703,077
Date of Construction or Acquisition	2000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,684,231
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,703,077
Operating Properties [Member] | 8802-8824 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				2,774,995
Initial Cost of Buildings				6,364,767
Costs Capitalized Subsequent to Acquisition				2,050,563
Land and Improvements				2,775,021
Building and Improvements				8,415,303
Gross Amount Carried at End of Period	$ 11,190,324			11,190,324
Accumulated Depreciation	$ 2,583,641			2,583,641
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,190,324
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,583,641
Operating Properties [Member] | 8825-8839 N Sam Houston Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				638,453
Initial Cost of Buildings				3,258,815
Costs Capitalized Subsequent to Acquisition				740,807
Land and Improvements				638,477
Building and Improvements				3,999,597
Gross Amount Carried at End of Period	$ 4,638,074			4,638,074
Accumulated Depreciation	$ 1,428,818			1,428,818
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,638,074
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,428,818
Operating Properties [Member] | 8850-8872 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				504,317
Initial Cost of Buildings				2,878,351
Costs Capitalized Subsequent to Acquisition				1,952,678
Land and Improvements				504,341
Building and Improvements				4,831,005
Gross Amount Carried at End of Period	$ 5,335,346			5,335,346
Accumulated Depreciation	$ 1,740,453			1,740,453
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,335,346
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,740,453
Operating Properties [Member] | 16200 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				1,748,348
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,342,218
Land and Improvements				2,120,319
Building and Improvements				8,970,247
Gross Amount Carried at End of Period	$ 11,090,566			11,090,566
Accumulated Depreciation	$ 1,448,476			1,448,476
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,090,566
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,448,476
Operating Properties [Member] | Cabot III UK1B01 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Isle of Man, UK
Encumbrances				0
Initial Cost of Land				11,888,058
Initial Cost of Buildings				35,003,668
Costs Capitalized Subsequent to Acquisition				(8,785,443)
Land and Improvements				9,702,442
Building and Improvements				28,403,841
Gross Amount Carried at End of Period	$ 38,106,283			38,106,283
Accumulated Depreciation	$ 3,449,692			3,449,692
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 38,106,283
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,449,692
Operating Properties [Member] | 1011 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Itasca, IL
Encumbrances				0
Initial Cost of Land				842,043
Initial Cost of Buildings				984,087
Costs Capitalized Subsequent to Acquisition				206,081
Land and Improvements				842,043
Building and Improvements				1,190,168
Gross Amount Carried at End of Period	$ 2,032,211			2,032,211
Accumulated Depreciation	$ 190,943			190,943
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,032,211
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 190,943
Operating Properties [Member] | 1035 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Itasca, IL
Encumbrances				0
Initial Cost of Land				875,172
Initial Cost of Buildings				2,071,051
Costs Capitalized Subsequent to Acquisition				125,154
Land and Improvements				875,172
Building and Improvements				2,196,206
Gross Amount Carried at End of Period	$ 3,071,378			3,071,378
Accumulated Depreciation	$ 291,896			291,896
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,071,378
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 291,896
Operating Properties [Member] | 1549 W Glenlake Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Itasca, IL
Encumbrances				0
Initial Cost of Land				1,339,627
Initial Cost of Buildings				3,763,288
Costs Capitalized Subsequent to Acquisition				197,452
Land and Improvements				1,339,627
Building and Improvements				3,960,739
Gross Amount Carried at End of Period	$ 5,300,366			5,300,366
Accumulated Depreciation	$ 559,334			559,334
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,300,366
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 559,334
Operating Properties [Member] | 901 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Itasca, IL
Encumbrances				0
Initial Cost of Land				866,378
Initial Cost of Buildings				2,112,616
Costs Capitalized Subsequent to Acquisition				47,981
Land and Improvements				866,378
Building and Improvements				2,160,597
Gross Amount Carried at End of Period	$ 3,026,975			3,026,975
Accumulated Depreciation	$ 272,326			272,326
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,026,975
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 272,326
Operating Properties [Member] | 925 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Itasca, IL
Encumbrances				0
Initial Cost of Land				945,251
Initial Cost of Buildings				2,010,181
Costs Capitalized Subsequent to Acquisition				47,544
Land and Improvements				945,251
Building and Improvements				2,057,725
Gross Amount Carried at End of Period	$ 3,002,976			3,002,976
Accumulated Depreciation	$ 257,674			257,674
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,002,976
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 257,674
Operating Properties [Member] | 8241 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Jessup, MD
Encumbrances				0
Initial Cost of Land				1,246,618
Initial Cost of Buildings				6,844,393
Costs Capitalized Subsequent to Acquisition				1,272,078
Land and Improvements				1,246,618
Building and Improvements				8,116,470
Gross Amount Carried at End of Period	$ 9,363,088			9,363,088
Accumulated Depreciation	$ 1,105,430			1,105,430
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,363,088
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,105,430
Operating Properties [Member] | 8242 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Jessup, MD
Encumbrances				0
Initial Cost of Land				1,488,746
Initial Cost of Buildings				9,072,440
Costs Capitalized Subsequent to Acquisition				1,482,236
Land and Improvements				1,488,746
Building and Improvements				10,554,676
Gross Amount Carried at End of Period	$ 12,043,422			12,043,422
Accumulated Depreciation	$ 1,556,327			1,556,327
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,043,422
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,556,327
Operating Properties [Member] | 8246 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Jessup, MD
Encumbrances				0
Initial Cost of Land				590,922
Initial Cost of Buildings				3,374,522
Costs Capitalized Subsequent to Acquisition				466,278
Land and Improvements				590,922
Building and Improvements				3,840,800
Gross Amount Carried at End of Period	$ 4,431,722			4,431,722
Accumulated Depreciation	$ 452,630			452,630
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,431,722
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 452,630
Operating Properties [Member] | 1305 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Kennesaw, GA
Encumbrances				0
Initial Cost of Land				808,159
Initial Cost of Buildings				5,712,959
Costs Capitalized Subsequent to Acquisition				1,092,163
Land and Improvements				808,159
Building and Improvements				6,805,122
Gross Amount Carried at End of Period	$ 7,613,281			7,613,281
Accumulated Depreciation	$ 1,171,981			1,171,981
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,613,281
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,171,981
Operating Properties [Member] | 1325 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Kennesaw, GA
Encumbrances				0
Initial Cost of Land				1,612,924
Initial Cost of Buildings				9,771,680
Costs Capitalized Subsequent to Acquisition				1,602,887
Land and Improvements				1,612,924
Building and Improvements				11,374,567
Gross Amount Carried at End of Period	$ 12,987,491			12,987,491
Accumulated Depreciation	$ 2,161,272			2,161,272
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,987,491
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,161,272
Operating Properties [Member] | 3600 Cobb International Bld NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Kennesaw, GA
Encumbrances				0
Initial Cost of Land				716,860
Initial Cost of Buildings				6,962,212
Costs Capitalized Subsequent to Acquisition				620,396
Land and Improvements				716,860
Building and Improvements				7,582,609
Gross Amount Carried at End of Period	$ 8,299,469			8,299,469
Accumulated Depreciation	$ 1,236,095			1,236,095
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,299,469
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,236,095
Operating Properties [Member] | Unit 1 Bear Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Kettering, UK
Encumbrances				0
Initial Cost of Land				10,849,890
Initial Cost of Buildings				36,219,855
Costs Capitalized Subsequent to Acquisition				(8,632,899)
Land and Improvements				8,855,141
Building and Improvements				29,581,705
Gross Amount Carried at End of Period	$ 38,436,846			38,436,846
Accumulated Depreciation	$ 3,855,300			3,855,300
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 38,436,846
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,855,300
Operating Properties [Member] | 650 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	King of Prussia, PA
Encumbrances				0
Initial Cost of Land				464,382
Initial Cost of Buildings				6,722,830
Costs Capitalized Subsequent to Acquisition				312,687
Land and Improvements				464,382
Building and Improvements				7,035,517
Gross Amount Carried at End of Period	$ 7,499,899			7,499,899
Accumulated Depreciation	$ 3,807,524			3,807,524
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,499,899
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,807,524
Operating Properties [Member] | 680 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	King of Prussia, PA
Encumbrances				0
Initial Cost of Land				952,361
Initial Cost of Buildings				6,722,830
Costs Capitalized Subsequent to Acquisition				7,218,586
Land and Improvements				952,361
Building and Improvements				13,941,416
Gross Amount Carried at End of Period	$ 14,893,777			14,893,777
Accumulated Depreciation	$ 7,812,014			7,812,014
Date of Construction or Acquisition	1971
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,893,777
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,812,014
Operating Properties [Member] | 1770 Interstate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lakeland, FL
Encumbrances				0
Initial Cost of Land				650,000
Initial Cost of Buildings				5,444,220
Costs Capitalized Subsequent to Acquisition				436
Land and Improvements				650,000
Building and Improvements				5,444,656
Gross Amount Carried at End of Period	$ 6,094,656			6,094,656
Accumulated Depreciation	$ 746,367			746,367
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,094,656
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 746,367
Operating Properties [Member] | 5801 Columbia Park Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Landover,MD
Encumbrances				0
Initial Cost of Land				1,187,620
Initial Cost of Buildings				4,598,346
Costs Capitalized Subsequent to Acquisition				122,220
Land and Improvements				1,187,620
Building and Improvements				4,720,566
Gross Amount Carried at End of Period	$ 5,908,186			5,908,186
Accumulated Depreciation	$ 4,720,184			4,720,184
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,908,186
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,720,184
Operating Properties [Member] | 11425 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				975,974
Initial Cost of Buildings				3,409,036
Costs Capitalized Subsequent to Acquisition				100,980
Land and Improvements				977,542
Building and Improvements				3,508,447
Gross Amount Carried at End of Period	$ 4,485,989			4,485,989
Accumulated Depreciation	$ 1,095,249			1,095,249
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,485,989
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,095,249
Operating Properties [Member] | 11503 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				2,561,931
Initial Cost of Buildings				9,695,493
Costs Capitalized Subsequent to Acquisition				276,527
Land and Improvements				2,566,047
Building and Improvements				9,967,904
Gross Amount Carried at End of Period	$ 12,533,951			12,533,951
Accumulated Depreciation	$ 2,946,740			2,946,740
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,533,951
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,946,740
Operating Properties [Member] | 1701 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				4,063,262
Initial Cost of Buildings				18,719,368
Costs Capitalized Subsequent to Acquisition				339,178
Land and Improvements				4,063,262
Building and Improvements				19,058,546
Gross Amount Carried at End of Period	$ 23,121,808			23,121,808
Accumulated Depreciation	$ 1,326,243			1,326,243
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 23,121,808
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,326,243
Operating Properties [Member] | 1842 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				2,226,284
Initial Cost of Buildings				11,976,185
Costs Capitalized Subsequent to Acquisition				20,231
Land and Improvements				2,226,284
Building and Improvements				11,996,415
Gross Amount Carried at End of Period	$ 14,222,699			14,222,699
Accumulated Depreciation	$ 904,697			904,697
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,222,699
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 904,697
Operating Properties [Member] | 1902 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				2,369,095
Initial Cost of Buildings				14,119,020
Costs Capitalized Subsequent to Acquisition				1,131
Land and Improvements				2,369,095
Building and Improvements				14,120,151
Gross Amount Carried at End of Period	$ 16,489,246			16,489,246
Accumulated Depreciation	$ 1,118,950			1,118,950
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 16,489,246
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,118,950
Operating Properties [Member] | 640 S State Road 39 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lebanon,IN
Encumbrances				0
Initial Cost of Land				1,612,787
Initial Cost of Buildings				18,065,552
Costs Capitalized Subsequent to Acquisition				1,219,356
Land and Improvements				1,612,787
Building and Improvements				19,284,908
Gross Amount Carried at End of Period	$ 20,897,695			20,897,695
Accumulated Depreciation	$ 3,004,444			3,004,444
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,897,695
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,004,444
Operating Properties [Member] | 7528 Walker Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lehigh, PA
Encumbrances				0
Initial Cost of Land				893,441
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,712,528
Land and Improvements				779,330
Building and Improvements				5,826,639
Gross Amount Carried at End of Period	$ 6,605,969			6,605,969
Accumulated Depreciation	$ 2,282,849			2,282,849
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,605,969
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,282,849
Operating Properties [Member] | 8301 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lehigh, PA
Encumbrances				0
Initial Cost of Land				11,249,550
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				49,196,411
Land and Improvements				11,254,716
Building and Improvements				49,191,245
Gross Amount Carried at End of Period	$ 60,445,961			60,445,961
Accumulated Depreciation	$ 14,179,681			14,179,681
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 60,445,961
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 14,179,681
Operating Properties [Member] | 8500 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lehigh, PA
Encumbrances				0
Initial Cost of Land				6,398,815
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				33,823,153
Land and Improvements				11,355,974
Building and Improvements				28,865,994
Gross Amount Carried at End of Period	$ 40,221,968			40,221,968
Accumulated Depreciation	$ 6,248,053			6,248,053
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 40,221,968
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,248,053
Operating Properties [Member] | 8742 Congdon Hill Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lower Macungie, PA
Encumbrances				0
Initial Cost of Land				22,444,500
Initial Cost of Buildings				20,222,582
Costs Capitalized Subsequent to Acquisition				1,171,671
Land and Improvements				22,444,500
Building and Improvements				21,394,253
Gross Amount Carried at End of Period	$ 43,838,753			43,838,753
Accumulated Depreciation	$ 941,498			941,498
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 43,838,753
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 941,498
Operating Properties [Member] | 7533 Industrial Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lower Macungie, PA
Encumbrances				0
Initial Cost of Land				5,603,460
Initial Cost of Buildings				18,807,987
Costs Capitalized Subsequent to Acquisition				1,860,270
Land and Improvements				5,603,460
Building and Improvements				20,668,257
Gross Amount Carried at End of Period	$ 26,271,717			26,271,717
Accumulated Depreciation	$ 3,672,813			3,672,813
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 26,271,717
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,672,813
Operating Properties [Member] | 10 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				823,540
Initial Cost of Buildings				1,341,376
Costs Capitalized Subsequent to Acquisition				248,078
Land and Improvements				832,244
Building and Improvements				1,580,750
Gross Amount Carried at End of Period	$ 2,412,994			2,412,994
Accumulated Depreciation	$ 1,425,276			1,425,276
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,412,994
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,425,276
Operating Properties [Member] | 100 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				1,320,625
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,423,695
Land and Improvements				1,891,736
Building and Improvements				6,852,584
Gross Amount Carried at End of Period	$ 8,744,320			8,744,320
Accumulated Depreciation	$ 3,942,208			3,942,208
Date of Construction or Acquisition	1998
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,744,320
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,942,208
Operating Properties [Member] | 1001 Cedar Hollow Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				1,436,814
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				17,007,048
Land and Improvements				1,676,470
Building and Improvements				16,767,392
Gross Amount Carried at End of Period	$ 18,443,862			18,443,862
Accumulated Depreciation	$ 9,118,790			9,118,790
Date of Construction or Acquisition	1998
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 18,443,862
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 9,118,790
Operating Properties [Member] | 12,14,16 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				130,689
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,329,277
Land and Improvements				128,767
Building and Improvements				1,331,199
Gross Amount Carried at End of Period	$ 1,459,966			1,459,966
Accumulated Depreciation	$ 1,195,890			1,195,890
Date of Construction or Acquisition	1982
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,459,966
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,195,890
Operating Properties [Member] | 14 Lee Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				664,282
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,976,172
Land and Improvements				643,892
Building and Improvements				5,996,562
Gross Amount Carried at End of Period	$ 6,640,454			6,640,454
Accumulated Depreciation	$ 4,257,492			4,257,492
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,640,454
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,257,492
Operating Properties [Member] | 18 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				394,036
Initial Cost of Buildings				3,976,221
Costs Capitalized Subsequent to Acquisition				(1,229,185)
Land and Improvements				397,293
Building and Improvements				2,743,779
Gross Amount Carried at End of Period	$ 3,141,072			3,141,072
Accumulated Depreciation	$ 2,743,556			2,743,556
Date of Construction or Acquisition	1980
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,141,072
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,743,556
Operating Properties [Member] | 311 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				397,131
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,710,751
Land and Improvements				397,948
Building and Improvements				2,709,934
Gross Amount Carried at End of Period	$ 3,107,882			3,107,882
Accumulated Depreciation	$ 2,514,676			2,514,676
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,107,882
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,514,676
Operating Properties [Member] | 425 Old Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				3,847,501
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				45,862,512
Land and Improvements				9,953,208
Building and Improvements				39,756,805
Gross Amount Carried at End of Period	$ 49,710,013			49,710,013
Accumulated Depreciation	$ 3,688,031			3,688,031
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 49,710,013
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,688,031
Operating Properties [Member] | 50 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				849,576
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				14,132,756
Land and Improvements				1,337,076
Building and Improvements				13,645,256
Gross Amount Carried at End of Period	$ 14,982,332			14,982,332
Accumulated Depreciation	$ 7,765,736			7,765,736
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,982,332
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,765,736
Operating Properties [Member] | 60 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				865,424
Initial Cost of Buildings				9,285,000
Costs Capitalized Subsequent to Acquisition				1,476,443
Land and Improvements				884,974
Building and Improvements				10,741,893
Gross Amount Carried at End of Period	$ 11,626,867			11,626,867
Accumulated Depreciation	$ 6,133,475			6,133,475
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,626,867
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 6,133,475
Operating Properties [Member] | 600 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				2,013,750
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,308,073
Land and Improvements				2,695,891
Building and Improvements				8,625,932
Gross Amount Carried at End of Period	$ 11,321,823			11,321,823
Accumulated Depreciation	$ 4,702,546			4,702,546
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,321,823
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,702,546
Operating Properties [Member] | 700 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				2,013,750
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,147,731
Land and Improvements				2,683,149
Building and Improvements				8,478,332
Gross Amount Carried at End of Period	$ 11,161,481			11,161,481
Accumulated Depreciation	$ 4,633,824			4,633,824
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,161,481
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,633,824
Operating Properties [Member] | 1169 Canton Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Marietta, GA
Encumbrances				0
Initial Cost of Land				1,232,219
Initial Cost of Buildings				17,897,326
Costs Capitalized Subsequent to Acquisition				439,054
Land and Improvements				1,232,219
Building and Improvements				18,336,380
Gross Amount Carried at End of Period	$ 19,568,599			19,568,599
Accumulated Depreciation	$ 2,404,742			2,404,742
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 19,568,599
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,404,742
Operating Properties [Member] | 65 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Mauldin, SC
Encumbrances				0
Initial Cost of Land				557,174
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,605,186
Land and Improvements				506,318
Building and Improvements				2,656,042
Gross Amount Carried at End of Period	$ 3,162,360			3,162,360
Accumulated Depreciation	$ 469,821			469,821
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,162,360
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 469,821
Operating Properties [Member] | 75 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Mauldin, SC
Encumbrances				0
Initial Cost of Land				419,731
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,360,850
Land and Improvements				430,909
Building and Improvements				2,349,672
Gross Amount Carried at End of Period	$ 2,780,581			2,780,581
Accumulated Depreciation	$ 811,157			811,157
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,780,581
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 811,157
Operating Properties [Member] | 126-132 Liberty Industrial Pkw [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	McDonough, GA
Encumbrances				0
Initial Cost of Land				600,666
Initial Cost of Buildings				4,184,131
Costs Capitalized Subsequent to Acquisition				573,605
Land and Improvements				600,666
Building and Improvements				4,757,735
Gross Amount Carried at End of Period	$ 5,358,401			5,358,401
Accumulated Depreciation	$ 1,011,099			1,011,099
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,358,401
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,011,099
Operating Properties [Member] | 95-115 Liberty Industrial Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	McDonough, GA
Encumbrances				0
Initial Cost of Land				660,420
Initial Cost of Buildings				4,785,127
Costs Capitalized Subsequent to Acquisition				1,752,845
Land and Improvements				660,420
Building and Improvements				6,537,972
Gross Amount Carried at End of Period	$ 7,198,392			7,198,392
Accumulated Depreciation	$ 1,005,026			1,005,026
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,198,392
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,005,026
Operating Properties [Member] | 11150 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				6,627,899
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,263,754
Land and Improvements				6,627,899
Building and Improvements				12,263,754
Gross Amount Carried at End of Period	$ 18,891,653			18,891,653
Accumulated Depreciation	$ 638,054			638,054
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 18,891,653
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 638,054
Operating Properties [Member] | 11401 NW 134th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				5,558,619
Initial Cost of Buildings				17,678,237
Costs Capitalized Subsequent to Acquisition				980,129
Land and Improvements				5,558,619
Building and Improvements				18,658,366
Gross Amount Carried at End of Period	$ 24,216,985			24,216,985
Accumulated Depreciation	$ 2,703,407			2,703,407
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 24,216,985
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,703,407
Operating Properties [Member] | 11450 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				1,623,293
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,366,493
Land and Improvements				3,919,238
Building and Improvements				9,070,548
Gross Amount Carried at End of Period	$ 12,989,786			12,989,786
Accumulated Depreciation	$ 661,827			661,827
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,989,786
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 661,827
Operating Properties [Member] | 456 International Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Minooka, IL
Encumbrances				0
Initial Cost of Land				3,862,683
Initial Cost of Buildings				14,357,981
Costs Capitalized Subsequent to Acquisition				4,629,086
Land and Improvements				3,862,683
Building and Improvements				18,987,067
Gross Amount Carried at End of Period	$ 22,849,750			22,849,750
Accumulated Depreciation	$ 2,656,638			2,656,638
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 22,849,750
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,656,638
Operating Properties [Member] | 21 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Monroe Township, NJ
Encumbrances				0
Initial Cost of Land				2,097,170
Initial Cost of Buildings				9,715,401
Costs Capitalized Subsequent to Acquisition				562,568
Land and Improvements				2,097,170
Building and Improvements				10,277,969
Gross Amount Carried at End of Period	$ 12,375,139			12,375,139
Accumulated Depreciation	$ 1,693,385			1,693,385
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,375,139
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,693,385
Operating Properties [Member] | 4 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Monroe Township, NJ
Encumbrances				0
Initial Cost of Land				2,263,153
Initial Cost of Buildings				10,261,759
Costs Capitalized Subsequent to Acquisition				1,026,738
Land and Improvements				2,263,153
Building and Improvements				11,288,497
Gross Amount Carried at End of Period	$ 13,551,650			13,551,650
Accumulated Depreciation	$ 1,657,916			1,657,916
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,551,650
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,657,916
Operating Properties [Member] | 250 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Moonachie, NJ
Encumbrances				0
Initial Cost of Land				10,435,430
Initial Cost of Buildings				7,272,539
Costs Capitalized Subsequent to Acquisition				131,978
Land and Improvements				10,435,430
Building and Improvements				7,404,517
Gross Amount Carried at End of Period	$ 17,839,947			17,839,947
Accumulated Depreciation	$ 96,404			96,404
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 17,839,947
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 96,404
Operating Properties [Member] | 230 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Moonachie, NJ
Encumbrances				0
Initial Cost of Land				4,031,058
Initial Cost of Buildings				2,775,467
Costs Capitalized Subsequent to Acquisition				45,946
Land and Improvements				4,031,058
Building and Improvements				2,821,413
Gross Amount Carried at End of Period	$ 6,852,471			6,852,471
Accumulated Depreciation	$ 36,357			36,357
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,852,471
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 36,357
Operating Properties [Member] | 22750 Cactus Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Moreno Valley, CA
Encumbrances				0
Initial Cost of Land				9,404,283
Initial Cost of Buildings				24,380,934
Costs Capitalized Subsequent to Acquisition				1,853,966
Land and Improvements				9,408,276
Building and Improvements				26,230,907
Gross Amount Carried at End of Period	$ 35,639,183			35,639,183
Accumulated Depreciation	$ 2,458,100			2,458,100
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 35,639,183
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,458,100
Operating Properties [Member] | 150 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				567,531
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				14,215,415
Land and Improvements				569,349
Building and Improvements				14,213,597
Gross Amount Carried at End of Period	$ 14,782,946			14,782,946
Accumulated Depreciation	$ 2,222,385			2,222,385
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,782,946
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,222,385
Operating Properties [Member] | 323 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Morrisville, NC
Encumbrances				0
Initial Cost of Land				1,071,600
Initial Cost of Buildings				4,397,807
Costs Capitalized Subsequent to Acquisition				1,030,423
Land and Improvements				1,071,600
Building and Improvements				5,428,230
Gross Amount Carried at End of Period	$ 6,499,830			6,499,830
Accumulated Depreciation	$ 1,560,466			1,560,466
Date of Construction or Acquisition	2010
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,499,830
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,560,466
Operating Properties [Member] | 324 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Morrisville, NC
Encumbrances				0
Initial Cost of Land				1,449,092
Initial Cost of Buildings				4,424,932
Costs Capitalized Subsequent to Acquisition				330,650
Land and Improvements				1,449,450
Building and Improvements				4,755,224
Gross Amount Carried at End of Period	$ 6,204,674			6,204,674
Accumulated Depreciation	$ 1,398,371			1,398,371
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,204,674
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,398,371
Operating Properties [Member] | 619 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Morrisville, NC
Encumbrances				0
Initial Cost of Land				1,031,430
Initial Cost of Buildings				5,655,167
Costs Capitalized Subsequent to Acquisition				769,814
Land and Improvements				1,031,685
Building and Improvements				6,424,726
Gross Amount Carried at End of Period	$ 7,456,411			7,456,411
Accumulated Depreciation	$ 1,793,552			1,793,552
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,456,411
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,793,552
Operating Properties [Member] | 1879 Lamont Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Odenton, MD
Encumbrances				0
Initial Cost of Land				1,976,000
Initial Cost of Buildings				8,099,579
Costs Capitalized Subsequent to Acquisition				2,067,394
Land and Improvements				2,011,030
Building and Improvements				10,131,943
Gross Amount Carried at End of Period	$ 12,142,973			12,142,973
Accumulated Depreciation	$ 3,497,401			3,497,401
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,142,973
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,497,401
Operating Properties [Member] | 350 Winmeyer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Odenton, MD
Encumbrances				0
Initial Cost of Land				1,778,400
Initial Cost of Buildings				7,289,165
Costs Capitalized Subsequent to Acquisition				1,702,845
Land and Improvements				1,809,927
Building and Improvements				8,960,483
Gross Amount Carried at End of Period	$ 10,770,410			10,770,410
Accumulated Depreciation	$ 2,799,293			2,799,293
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,770,410
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,799,293
Operating Properties [Member] | 4000 E Airport Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Ontario, CA
Encumbrances				0
Initial Cost of Land				2,686,533
Initial Cost of Buildings				10,125,772
Costs Capitalized Subsequent to Acquisition				658,692
Land and Improvements				2,686,533
Building and Improvements				10,784,464
Gross Amount Carried at End of Period	$ 13,470,997			13,470,997
Accumulated Depreciation	$ 1,483,811			1,483,811
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,470,997
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,483,811
Operating Properties [Member] | 1000 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				415,906
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,711,665
Land and Improvements				435,400
Building and Improvements				2,692,171
Gross Amount Carried at End of Period	$ 3,127,571			3,127,571
Accumulated Depreciation	$ 702,354			702,354
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,127,571
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 702,354
Operating Properties [Member] | 10003 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				680,312
Initial Cost of Buildings				2,120,754
Costs Capitalized Subsequent to Acquisition				1,351,516
Land and Improvements				680,312
Building and Improvements				3,472,270
Gross Amount Carried at End of Period	$ 4,152,582			4,152,582
Accumulated Depreciation	$ 1,492,523			1,492,523
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,152,582
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,492,523
Operating Properties [Member] | 10511 & 10611 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				517,554
Initial Cost of Buildings				2,568,186
Costs Capitalized Subsequent to Acquisition				701,878
Land and Improvements				522,991
Building and Improvements				3,264,627
Gross Amount Carried at End of Period	$ 3,787,618			3,787,618
Accumulated Depreciation	$ 1,701,375			1,701,375
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,787,618
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,701,375
Operating Properties [Member] | 10771 Palm Bay Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				664,605
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,515,852
Land and Improvements				685,383
Building and Improvements				2,495,074
Gross Amount Carried at End of Period	$ 3,180,457			3,180,457
Accumulated Depreciation	$ 969,898			969,898
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,180,457
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 969,898
Operating Properties [Member] | 1090 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				878,320
Initial Cost of Buildings				2,558,833
Costs Capitalized Subsequent to Acquisition				3,837,116
Land and Improvements				878,320
Building and Improvements				6,395,949
Gross Amount Carried at End of Period	$ 7,274,269			7,274,269
Accumulated Depreciation	$ 1,496,145			1,496,145
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,274,269
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,496,145
Operating Properties [Member] | 1600-1650 Central Florida Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				518,043
Initial Cost of Buildings				2,561,938
Costs Capitalized Subsequent to Acquisition				966,443
Land and Improvements				518,043
Building and Improvements				3,528,381
Gross Amount Carried at End of Period	$ 4,046,424			4,046,424
Accumulated Depreciation	$ 1,887,708			1,887,708
Date of Construction or Acquisition	1962
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,046,424
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,887,708
Operating Properties [Member] | 1902 Cypress Lake Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				523,512
Initial Cost of Buildings				3,191,790
Costs Capitalized Subsequent to Acquisition				1,529,900
Land and Improvements				538,512
Building and Improvements				4,706,690
Gross Amount Carried at End of Period	$ 5,245,202			5,245,202
Accumulated Depreciation	$ 2,379,793			2,379,793
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,245,202
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,379,793
Operating Properties [Member] | 2000 Park Oaks Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				913,201
Initial Cost of Buildings				6,818,610
Costs Capitalized Subsequent to Acquisition				993,925
Land and Improvements				913,201
Building and Improvements				7,812,535
Gross Amount Carried at End of Period	$ 8,725,736			8,725,736
Accumulated Depreciation	$ 1,131,776			1,131,776
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,725,736
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,131,776
Operating Properties [Member] | 2202 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,283,713
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,315,647
Land and Improvements				1,283,713
Building and Improvements				7,315,647
Gross Amount Carried at End of Period	$ 8,599,360			8,599,360
Accumulated Depreciation	$ 3,147,459			3,147,459
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,599,360
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,147,459
Operating Properties [Member] | 2212 Taft Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				838,853
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,084,873
Land and Improvements				767,953
Building and Improvements				4,155,773
Gross Amount Carried at End of Period	$ 4,923,726			4,923,726
Accumulated Depreciation	$ 1,408,619			1,408,619
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,923,726
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,408,619
Operating Properties [Member] | 2256 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				467,296
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,856,883
Land and Improvements				825,673
Building and Improvements				2,498,506
Gross Amount Carried at End of Period	$ 3,324,179			3,324,179
Accumulated Depreciation	$ 965,372			965,372
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,324,179
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 965,372
Operating Properties [Member] | 2351 Investors Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				2,261,924
Initial Cost of Buildings				7,496,249
Costs Capitalized Subsequent to Acquisition				1,892,529
Land and Improvements				2,271,785
Building and Improvements				9,378,917
Gross Amount Carried at End of Period	$ 11,650,702			11,650,702
Accumulated Depreciation	$ 3,062,843			3,062,843
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,650,702
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,062,843
Operating Properties [Member] | 2400 South Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				385,964
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,247,268
Land and Improvements				642,427
Building and Improvements				2,990,805
Gross Amount Carried at End of Period	$ 3,633,232			3,633,232
Accumulated Depreciation	$ 1,441,537			1,441,537
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,633,232
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,441,537
Operating Properties [Member] | 2412 Sand Lake Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,236,819
Initial Cost of Buildings				3,243,314
Costs Capitalized Subsequent to Acquisition				4,569,481
Land and Improvements				1,244,667
Building and Improvements				7,804,947
Gross Amount Carried at End of Period	$ 9,049,614			9,049,614
Accumulated Depreciation	$ 1,078,475			1,078,475
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,049,614
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,078,475
Operating Properties [Member] | 2416 Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				535,964
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,817,081
Land and Improvements				704,800
Building and Improvements				3,648,245
Gross Amount Carried at End of Period	$ 4,353,045			4,353,045
Accumulated Depreciation	$ 1,848,025			1,848,025
Date of Construction or Acquisition	2002
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,353,045
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,848,025
Operating Properties [Member] | 6200 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,435,301
Initial Cost of Buildings				6,174,642
Costs Capitalized Subsequent to Acquisition				701,669
Land and Improvements				1,435,301
Building and Improvements				6,876,311
Gross Amount Carried at End of Period	$ 8,311,612			8,311,612
Accumulated Depreciation	$ 2,236,259			2,236,259
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,311,612
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,236,259
Operating Properties [Member] | 6989 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				903,701
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,673,463
Land and Improvements				925,671
Building and Improvements				5,651,493
Gross Amount Carried at End of Period	$ 6,577,164			6,577,164
Accumulated Depreciation	$ 2,321,511			2,321,511
Date of Construction or Acquisition	2001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,577,164
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,321,511
Operating Properties [Member] | 6918 Presidents Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				872,550
Initial Cost of Buildings				2,526,043
Costs Capitalized Subsequent to Acquisition				738,036
Land and Improvements				872,550
Building and Improvements				3,264,079
Gross Amount Carried at End of Period	$ 4,136,629			4,136,629
Accumulated Depreciation	$ 407,627			407,627
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,136,629
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 407,627
Operating Properties [Member] | 6923 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				903,701
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,394,043
Land and Improvements				830,953
Building and Improvements				3,466,791
Gross Amount Carried at End of Period	$ 4,297,744			4,297,744
Accumulated Depreciation	$ 911,447			911,447
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,297,744
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 911,447
Operating Properties [Member] | 7022 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,443,510
Initial Cost of Buildings				6,775,194
Costs Capitalized Subsequent to Acquisition				666,574
Land and Improvements				1,457,286
Building and Improvements				7,427,993
Gross Amount Carried at End of Period	$ 8,885,279			8,885,279
Accumulated Depreciation	$ 2,162,331			2,162,331
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,885,279
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,162,331
Operating Properties [Member] | 7100 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,431,489
Initial Cost of Buildings				8,002,539
Costs Capitalized Subsequent to Acquisition				1,221,160
Land and Improvements				1,445,807
Building and Improvements				9,209,381
Gross Amount Carried at End of Period	$ 10,655,188			10,655,188
Accumulated Depreciation	$ 2,510,571			2,510,571
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,655,188
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,510,571
Operating Properties [Member] | 7101 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,553,537
Initial Cost of Buildings				5,702,243
Costs Capitalized Subsequent to Acquisition				635,492
Land and Improvements				1,570,863
Building and Improvements				6,320,409
Gross Amount Carried at End of Period	$ 7,891,272			7,891,272
Accumulated Depreciation	$ 1,789,479			1,789,479
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,891,272
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,789,479
Operating Properties [Member] | 7315 Kingspointe Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				1,931,697
Initial Cost of Buildings				6,388,203
Costs Capitalized Subsequent to Acquisition				2,921,391
Land and Improvements				1,932,004
Building and Improvements				9,309,287
Gross Amount Carried at End of Period	$ 11,241,291			11,241,291
Accumulated Depreciation	$ 3,939,705			3,939,705
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,241,291
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,939,705
Operating Properties [Member] | 851 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				332,992
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,800,846
Land and Improvements				373,500
Building and Improvements				2,760,338
Gross Amount Carried at End of Period	$ 3,133,838			3,133,838
Accumulated Depreciation	$ 717,909			717,909
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,133,838
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 717,909
Operating Properties [Member] | 950 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				443,989
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,817,379
Land and Improvements				464,800
Building and Improvements				2,796,568
Gross Amount Carried at End of Period	$ 3,261,368			3,261,368
Accumulated Depreciation	$ 664,304			664,304
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,261,368
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 664,304
Operating Properties [Member] | 29 Liberty Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				165,363
Initial Cost of Buildings				1,139,928
Costs Capitalized Subsequent to Acquisition				25,834
Land and Improvements				168,913
Building and Improvements				1,162,211
Gross Amount Carried at End of Period	$ 1,331,124			1,331,124
Accumulated Depreciation	$ 43,922			43,922
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,331,124
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 43,922
Operating Properties [Member] | 9550 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				574,831
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,690,726
Land and Improvements				587,319
Building and Improvements				2,678,238
Gross Amount Carried at End of Period	$ 3,265,557			3,265,557
Accumulated Depreciation	$ 1,422,420			1,422,420
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,265,557
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,422,420
Operating Properties [Member] | 3535 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Buford, GA
Encumbrances				0
Initial Cost of Land				2,807,020
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,348,803
Land and Improvements				3,077,350
Building and Improvements				9,078,473
Gross Amount Carried at End of Period	$ 12,155,823			12,155,823
Accumulated Depreciation	$ 85,572			85,572
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,155,823
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 85,572
Operating Properties [Member] | 9700 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Orlando, FL
Encumbrances				0
Initial Cost of Land				252,850
Initial Cost of Buildings				1,297,923
Costs Capitalized Subsequent to Acquisition				185,218
Land and Improvements				252,850
Building and Improvements				1,483,141
Gross Amount Carried at End of Period	$ 1,735,991			1,735,991
Accumulated Depreciation	$ 744,969			744,969
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,735,991
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 744,969
Operating Properties [Member] | 1 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				567,280
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				15,193,253
Land and Improvements				347,892
Building and Improvements				15,412,641
Gross Amount Carried at End of Period	$ 15,760,533			15,760,533
Accumulated Depreciation	$ 4,588,553			4,588,553
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,760,533
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,588,553
Operating Properties [Member] | 201 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				243,905
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				22,536,140
Land and Improvements				449,013
Building and Improvements				22,331,032
Gross Amount Carried at End of Period	$ 22,780,045			22,780,045
Accumulated Depreciation	$ 2,045,156			2,045,156
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 22,780,045
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,045,156
Operating Properties [Member] | 351 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				359,864
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				16,741,665
Land and Improvements				367,016
Building and Improvements				16,734,513
Gross Amount Carried at End of Period	$ 17,101,529			17,101,529
Accumulated Depreciation	$ 468,293			468,293
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 17,101,529
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 468,293
Operating Properties [Member] | 3 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				214,726
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				24,170,214
Land and Improvements				417,823
Building and Improvements				23,967,117
Gross Amount Carried at End of Period	$ 24,384,940			24,384,940
Accumulated Depreciation	$ 4,631,085			4,631,085
Date of Construction or Acquisition	2008
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 24,384,940
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,631,085
Operating Properties [Member] | 4000 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				1,255,507
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,817,040
Land and Improvements				1,142,358
Building and Improvements				10,930,189
Gross Amount Carried at End of Period	$ 12,072,547			12,072,547
Accumulated Depreciation	$ 789,639			789,639
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,072,547
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 789,639
Operating Properties [Member] | 4020 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				51,784
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,165,713
Land and Improvements				616,467
Building and Improvements				6,601,030
Gross Amount Carried at End of Period	$ 7,217,497			7,217,497
Accumulated Depreciation	$ 1,042,441			1,042,441
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,217,497
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,042,441
Operating Properties [Member] | 4050 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				46,301
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,164,435
Land and Improvements				616,670
Building and Improvements				6,594,066
Gross Amount Carried at End of Period	$ 7,210,736			7,210,736
Accumulated Depreciation	$ 1,278,766			1,278,766
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,210,736
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,278,766
Operating Properties [Member] | 4300 South 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				402,673
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				34,857,088
Land and Improvements				413,030
Building and Improvements				34,846,731
Gross Amount Carried at End of Period	$ 35,259,761			35,259,761
Accumulated Depreciation	$ 7,526,028			7,526,028
Date of Construction or Acquisition	2008
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 35,259,761
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,526,028
Operating Properties [Member] | 4751 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				992,965
Initial Cost of Buildings				331,924
Costs Capitalized Subsequent to Acquisition				7,830,302
Land and Improvements				613,248
Building and Improvements				8,541,943
Gross Amount Carried at End of Period	$ 9,155,191			9,155,191
Accumulated Depreciation	$ 3,262,455			3,262,455
Date of Construction or Acquisition	2003
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,155,191
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,262,455
Operating Properties [Member] | 4775 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				891,892
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,579,310
Land and Improvements				366,982
Building and Improvements				6,104,220
Gross Amount Carried at End of Period	$ 6,471,202			6,471,202
Accumulated Depreciation	$ 1,639,085			1,639,085
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,471,202
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,639,085
Operating Properties [Member] | 8th & Walnut Streets [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				38,446,743
Initial Cost of Land				734,275
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				45,400,360
Land and Improvements				0
Building and Improvements				46,134,635
Gross Amount Carried at End of Period	$ 46,134,635			46,134,635
Accumulated Depreciation	$ 4,515,020			4,515,020
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 46,134,635
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,515,020
Operating Properties [Member] | 2626 South 7th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				2,519,510
Initial Cost of Buildings				3,798,560
Costs Capitalized Subsequent to Acquisition				3,685,037
Land and Improvements				2,519,510
Building and Improvements				7,483,597
Gross Amount Carried at End of Period	$ 10,003,107			10,003,107
Accumulated Depreciation	$ 1,336,897			1,336,897
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,003,107
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,336,897
Operating Properties [Member] | 563 South 63rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				5,523,427
Initial Cost of Buildings				14,581,705
Costs Capitalized Subsequent to Acquisition				12,213,826
Land and Improvements				5,636,070
Building and Improvements				26,682,888
Gross Amount Carried at End of Period	$ 32,318,958			32,318,958
Accumulated Depreciation	$ 3,051,216			3,051,216
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 32,318,958
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,051,216
Operating Properties [Member] | 1000 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				706,660
Initial Cost of Buildings				5,894,330
Costs Capitalized Subsequent to Acquisition				221,055
Land and Improvements				706,660
Building and Improvements				6,115,386
Gross Amount Carried at End of Period	$ 6,822,046			6,822,046
Accumulated Depreciation	$ 828,306			828,306
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,822,046
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 828,306
Operating Properties [Member] | 1901 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				555,168
Initial Cost of Buildings				6,401,789
Costs Capitalized Subsequent to Acquisition				618,010
Land and Improvements				555,168
Building and Improvements				7,019,799
Gross Amount Carried at End of Period	$ 7,574,967			7,574,967
Accumulated Depreciation	$ 1,037,479			1,037,479
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,574,967
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,037,479
Operating Properties [Member] | 1909 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				551,706
Initial Cost of Buildings				5,797,440
Costs Capitalized Subsequent to Acquisition				328,067
Land and Improvements				551,706
Building and Improvements				6,125,507
Gross Amount Carried at End of Period	$ 6,677,213			6,677,213
Accumulated Depreciation	$ 880,200			880,200
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,677,213
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 880,200
Operating Properties [Member] | 3605 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				1,047,996
Initial Cost of Buildings				9,218,748
Costs Capitalized Subsequent to Acquisition				1,970,974
Land and Improvements				1,047,996
Building and Improvements				11,189,721
Gross Amount Carried at End of Period	$ 12,237,717			12,237,717
Accumulated Depreciation	$ 1,820,188			1,820,188
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,237,717
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,820,188
Operating Properties [Member] | 3701 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				877,564
Initial Cost of Buildings				7,460,686
Costs Capitalized Subsequent to Acquisition				773,494
Land and Improvements				877,564
Building and Improvements				8,234,179
Gross Amount Carried at End of Period	$ 9,111,743			9,111,743
Accumulated Depreciation	$ 1,150,031			1,150,031
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,111,743
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,150,031
Operating Properties [Member] | 800 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				580,456
Initial Cost of Buildings				5,681,283
Costs Capitalized Subsequent to Acquisition				1,595,423
Land and Improvements				580,456
Building and Improvements				7,276,706
Gross Amount Carried at End of Period	$ 7,857,162			7,857,162
Accumulated Depreciation	$ 973,045			973,045
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,857,162
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 973,045
Operating Properties [Member] | 900 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plano, TX
Encumbrances				0
Initial Cost of Land				723,534
Initial Cost of Buildings				6,004,923
Costs Capitalized Subsequent to Acquisition				378,359
Land and Improvements				723,534
Building and Improvements				6,383,282
Gross Amount Carried at End of Period	$ 7,106,816			7,106,816
Accumulated Depreciation	$ 989,893			989,893
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,106,816
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 989,893
Operating Properties [Member] | 9801 80th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pleasant Prairie, WI
Encumbrances				0
Initial Cost of Land				1,692,077
Initial Cost of Buildings				7,934,794
Costs Capitalized Subsequent to Acquisition				58,937
Land and Improvements				1,689,726
Building and Improvements				7,996,082
Gross Amount Carried at End of Period	$ 9,685,808			9,685,808
Accumulated Depreciation	$ 3,807,978			3,807,978
Date of Construction or Acquisition	1994
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,685,808
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,807,978
Operating Properties [Member] | 14630-14650 28th Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plymouth, MN
Encumbrances				0
Initial Cost of Land				198,205
Initial Cost of Buildings				1,793,422
Costs Capitalized Subsequent to Acquisition				1,097,124
Land and Improvements				198,205
Building and Improvements				2,890,545
Gross Amount Carried at End of Period	$ 3,088,750			3,088,750
Accumulated Depreciation	$ 1,499,797			1,499,797
Date of Construction or Acquisition	1978
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,088,750
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,499,797
Operating Properties [Member] | 2920 Northwest Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plymouth, MN
Encumbrances				0
Initial Cost of Land				392,026
Initial Cost of Buildings				3,433,678
Costs Capitalized Subsequent to Acquisition				773,681
Land and Improvements				384,235
Building and Improvements				4,215,150
Gross Amount Carried at End of Period	$ 4,599,385			4,599,385
Accumulated Depreciation	$ 2,058,675			2,058,675
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,599,385
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,058,675
Operating Properties [Member] | 5905 Trenton Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plymouth, MN
Encumbrances				0
Initial Cost of Land				1,616,360
Initial Cost of Buildings				4,487,462
Costs Capitalized Subsequent to Acquisition				735,642
Land and Improvements				1,616,360
Building and Improvements				5,223,103
Gross Amount Carried at End of Period	$ 6,839,463			6,839,463
Accumulated Depreciation	$ 865,378			865,378
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,839,463
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 865,378
Operating Properties [Member] | 6055 Nathan Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Plymouth, MN
Encumbrances				0
Initial Cost of Land				1,327,017
Initial Cost of Buildings				4,527,404
Costs Capitalized Subsequent to Acquisition				826,105
Land and Improvements				1,327,017
Building and Improvements				5,353,509
Gross Amount Carried at End of Period	$ 6,680,526			6,680,526
Accumulated Depreciation	$ 837,746			837,746
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,680,526
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 837,746
Operating Properties [Member] | 1400 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,157,049
Initial Cost of Buildings				4,620,956
Costs Capitalized Subsequent to Acquisition				1,351,035
Land and Improvements				1,157,049
Building and Improvements				5,971,991
Gross Amount Carried at End of Period	$ 7,129,040			7,129,040
Accumulated Depreciation	$ 2,947,077			2,947,077
Date of Construction or Acquisition	1986
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,129,040
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,947,077
Operating Properties [Member] | 1405 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				392,138
Initial Cost of Buildings				1,565,787
Costs Capitalized Subsequent to Acquisition				443,631
Land and Improvements				392,138
Building and Improvements				2,009,419
Gross Amount Carried at End of Period	$ 2,401,557			2,401,557
Accumulated Depreciation	$ 1,046,464			1,046,464
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,401,557
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,046,464
Operating Properties [Member] | 1500 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				972,232
Initial Cost of Buildings				3,892,085
Costs Capitalized Subsequent to Acquisition				1,423,097
Land and Improvements				972,232
Building and Improvements				5,315,182
Gross Amount Carried at End of Period	$ 6,287,414			6,287,414
Accumulated Depreciation	$ 2,445,184			2,445,184
Date of Construction or Acquisition	1957
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,287,414
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,445,184
Operating Properties [Member] | 1501 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				203,247
Initial Cost of Buildings				811,093
Costs Capitalized Subsequent to Acquisition				369,074
Land and Improvements				203,247
Building and Improvements				1,180,168
Gross Amount Carried at End of Period	$ 1,383,415			1,383,415
Accumulated Depreciation	$ 612,674			612,674
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,383,415
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 612,674
Operating Properties [Member] | 1601 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				203,247
Initial Cost of Buildings				811,093
Costs Capitalized Subsequent to Acquisition				208,337
Land and Improvements				203,247
Building and Improvements				1,019,431
Gross Amount Carried at End of Period	$ 1,222,678			1,222,678
Accumulated Depreciation	$ 476,637			476,637
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,222,678
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 476,637
Operating Properties [Member] | 1651 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				203,247
Initial Cost of Buildings				811,093
Costs Capitalized Subsequent to Acquisition				154,527
Land and Improvements				203,247
Building and Improvements				965,621
Gross Amount Carried at End of Period	$ 1,168,868			1,168,868
Accumulated Depreciation	$ 450,544			450,544
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,168,868
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 450,544
Operating Properties [Member] | 2201-2215 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,120,328
Initial Cost of Buildings				3,427,358
Costs Capitalized Subsequent to Acquisition				131,858
Land and Improvements				1,120,328
Building and Improvements				3,559,216
Gross Amount Carried at End of Period	$ 4,679,544			4,679,544
Accumulated Depreciation	$ 484,217			484,217
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,679,544
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 484,217
Operating Properties [Member] | 2250-2270 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				993,015
Initial Cost of Buildings				2,423,174
Costs Capitalized Subsequent to Acquisition				135,867
Land and Improvements				993,015
Building and Improvements				2,559,041
Gross Amount Carried at End of Period	$ 3,552,056			3,552,056
Accumulated Depreciation	$ 381,687			381,687
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,552,056
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 381,687
Operating Properties [Member] | 2280-2300 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				906,947
Initial Cost of Buildings				2,157,802
Costs Capitalized Subsequent to Acquisition				189,366
Land and Improvements				906,947
Building and Improvements				2,347,169
Gross Amount Carried at End of Period	$ 3,254,116			3,254,116
Accumulated Depreciation	$ 377,549			377,549
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,254,116
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 377,549
Operating Properties [Member] | 2301-2329 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,268,707
Initial Cost of Buildings				3,079,811
Costs Capitalized Subsequent to Acquisition				124,704
Land and Improvements				1,268,707
Building and Improvements				3,204,515
Gross Amount Carried at End of Period	$ 4,473,222			4,473,222
Accumulated Depreciation	$ 437,326			437,326
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,473,222
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 437,326
Operating Properties [Member] | 3000 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,087,554
Initial Cost of Buildings				2,897,117
Costs Capitalized Subsequent to Acquisition				156,810
Land and Improvements				1,087,554
Building and Improvements				3,053,927
Gross Amount Carried at End of Period	$ 4,141,481			4,141,481
Accumulated Depreciation	$ 466,741			466,741
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,141,481
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 466,741
Operating Properties [Member] | 3001-3037 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,548,542
Initial Cost of Buildings				3,512,041
Costs Capitalized Subsequent to Acquisition				338,715
Land and Improvements				1,548,542
Building and Improvements				3,850,757
Gross Amount Carried at End of Period	$ 5,399,299			5,399,299
Accumulated Depreciation	$ 663,071			663,071
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,399,299
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 663,071
Operating Properties [Member] | 3012-3050 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				1,112,781
Initial Cost of Buildings				2,763,862
Costs Capitalized Subsequent to Acquisition				225,157
Land and Improvements				1,112,781
Building and Improvements				2,989,018
Gross Amount Carried at End of Period	$ 4,101,799			4,101,799
Accumulated Depreciation	$ 478,959			478,959
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,101,799
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 478,959
Operating Properties [Member] | 595 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				359,933
Initial Cost of Buildings				1,437,116
Costs Capitalized Subsequent to Acquisition				720,423
Land and Improvements				359,933
Building and Improvements				2,157,539
Gross Amount Carried at End of Period	$ 2,517,472			2,517,472
Accumulated Depreciation	$ 1,259,729			1,259,729
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,517,472
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,259,729
Operating Properties [Member] | 601 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				164,413
Initial Cost of Buildings				655,933
Costs Capitalized Subsequent to Acquisition				279,401
Land and Improvements				164,413
Building and Improvements				935,334
Gross Amount Carried at End of Period	$ 1,099,747			1,099,747
Accumulated Depreciation	$ 536,076			536,076
Date of Construction or Acquisition	1984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,099,747
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 536,076
Operating Properties [Member] | 605 SW 16th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Pompano Beach, FL
Encumbrances				0
Initial Cost of Land				310,778
Initial Cost of Buildings				1,238,324
Costs Capitalized Subsequent to Acquisition				294,980
Land and Improvements				310,178
Building and Improvements				1,533,904
Gross Amount Carried at End of Period	$ 1,844,082			1,844,082
Accumulated Depreciation	$ 672,829			672,829
Date of Construction or Acquisition	1965
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,844,082
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 672,829
Operating Properties [Member] | 2459 Almond Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Redlands, CA
Initial Cost of Land				3,810,171
Initial Cost of Buildings				11,979,923
Costs Capitalized Subsequent to Acquisition				140,915
Land and Improvements				3,810,171
Building and Improvements				12,120,838
Gross Amount Carried at End of Period	$ 15,931,009			15,931,009
Accumulated Depreciation	$ 112,006			112,006
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,931,009
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 112,006
Operating Properties [Member] | 1221 N Alder Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rialto, CA
Initial Cost of Land				17,280,833
Initial Cost of Buildings				72,740,859
Costs Capitalized Subsequent to Acquisition				5,825
Land and Improvements				17,280,833
Building and Improvements				72,746,684
Gross Amount Carried at End of Period	$ 90,027,517			90,027,517
Accumulated Depreciation	$ 14,606			14,606
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 90,027,517
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 14,606
Operating Properties [Member] | 1920 West Baseline Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rialto, CA
Encumbrances				0
Initial Cost of Land				9,361,943
Initial Cost of Buildings				17,970,709
Costs Capitalized Subsequent to Acquisition				454,600
Land and Improvements				9,411,621
Building and Improvements				18,375,631
Gross Amount Carried at End of Period	$ 27,787,252			27,787,252
Accumulated Depreciation	$ 1,430,709			1,430,709
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 27,787,252
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,430,709
Operating Properties [Member] | 301 Hill Carter Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				659,456
Initial Cost of Buildings				4,836,010
Costs Capitalized Subsequent to Acquisition				160,298
Land and Improvements				659,456
Building and Improvements				4,996,308
Gross Amount Carried at End of Period	$ 5,655,764			5,655,764
Accumulated Depreciation	$ 2,886,300			2,886,300
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,655,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,886,300
Operating Properties [Member] | 4101-4127 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				310,854
Initial Cost of Buildings				2,279,597
Costs Capitalized Subsequent to Acquisition				1,910,263
Land and Improvements				310,854
Building and Improvements				4,189,860
Gross Amount Carried at End of Period	$ 4,500,714			4,500,714
Accumulated Depreciation	$ 1,969,050			1,969,050
Date of Construction or Acquisition	1973
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,500,714
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,969,050
Operating Properties [Member] | 4201-4261 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				693,203
Initial Cost of Buildings				5,083,493
Costs Capitalized Subsequent to Acquisition				2,158,077
Land and Improvements				693,203
Building and Improvements				7,241,570
Gross Amount Carried at End of Period	$ 7,934,773			7,934,773
Accumulated Depreciation	$ 4,258,125			4,258,125
Date of Construction or Acquisition	1975
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,934,773
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,258,125
Operating Properties [Member] | 4263-4299 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				256,203
Initial Cost of Buildings				2,549,649
Costs Capitalized Subsequent to Acquisition				3,110,924
Land and Improvements				256,203
Building and Improvements				5,660,573
Gross Amount Carried at End of Period	$ 5,916,776			5,916,776
Accumulated Depreciation	$ 2,854,983			2,854,983
Date of Construction or Acquisition	1976
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,916,776
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,854,983
Operating Properties [Member] | 4263F-N. Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				91,476
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,969,181
Land and Improvements				91,599
Building and Improvements				1,969,058
Gross Amount Carried at End of Period	$ 2,060,657			2,060,657
Accumulated Depreciation	$ 1,069,559			1,069,559
Date of Construction or Acquisition	1975
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,060,657
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,069,559
Operating Properties [Member] | 4301-4335 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				223,696
Initial Cost of Buildings				1,640,435
Costs Capitalized Subsequent to Acquisition				2,945,635
Land and Improvements				223,696
Building and Improvements				4,586,070
Gross Amount Carried at End of Period	$ 4,809,766			4,809,766
Accumulated Depreciation	$ 2,149,270			2,149,270
Date of Construction or Acquisition	1978
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,809,766
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,149,270
Operating Properties [Member] | 4337-4379 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				325,303
Initial Cost of Buildings				2,385,557
Costs Capitalized Subsequent to Acquisition				1,426,384
Land and Improvements				325,303
Building and Improvements				3,811,941
Gross Amount Carried at End of Period	$ 4,137,244			4,137,244
Accumulated Depreciation	$ 1,949,170			1,949,170
Date of Construction or Acquisition	1979
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,137,244
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,949,170
Operating Properties [Member] | 4401-4445 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				615,038
Initial Cost of Buildings				4,510,272
Costs Capitalized Subsequent to Acquisition				590,263
Land and Improvements				615,038
Building and Improvements				5,100,535
Gross Amount Carried at End of Period	$ 5,715,573			5,715,573
Accumulated Depreciation	$ 2,849,707			2,849,707
Date of Construction or Acquisition	1988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,715,573
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,849,707
Operating Properties [Member] | 4447-4491 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				454,056
Initial Cost of Buildings				2,729,742
Costs Capitalized Subsequent to Acquisition				561,739
Land and Improvements				454,056
Building and Improvements				3,291,481
Gross Amount Carried at End of Period	$ 3,745,537			3,745,537
Accumulated Depreciation	$ 1,924,513			1,924,513
Date of Construction or Acquisition	1987
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,745,537
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,924,513
Operating Properties [Member] | 4501-4549 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				486,166
Initial Cost of Buildings				3,565,211
Costs Capitalized Subsequent to Acquisition				588,371
Land and Improvements				486,166
Building and Improvements				4,153,582
Gross Amount Carried at End of Period	$ 4,639,748			4,639,748
Accumulated Depreciation	$ 2,416,513			2,416,513
Date of Construction or Acquisition	1981
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,639,748
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,416,513
Operating Properties [Member] | 4551-4593 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				474,360
Initial Cost of Buildings				3,478,646
Costs Capitalized Subsequent to Acquisition				1,022,000
Land and Improvements				474,360
Building and Improvements				4,500,646
Gross Amount Carried at End of Period	$ 4,975,006			4,975,006
Accumulated Depreciation	$ 2,819,618			2,819,618
Date of Construction or Acquisition	1982
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,975,006
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,819,618
Operating Properties [Member] | 4601-4643 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				652,455
Initial Cost of Buildings				4,784,675
Costs Capitalized Subsequent to Acquisition				1,194,888
Land and Improvements				652,455
Building and Improvements				5,979,563
Gross Amount Carried at End of Period	$ 6,632,018			6,632,018
Accumulated Depreciation	$ 3,375,244			3,375,244
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,632,018
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,375,244
Operating Properties [Member] | 4645-4683 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				404,616
Initial Cost of Buildings				2,967,187
Costs Capitalized Subsequent to Acquisition				640,579
Land and Improvements				404,616
Building and Improvements				3,607,766
Gross Amount Carried at End of Period	$ 4,012,382			4,012,382
Accumulated Depreciation	$ 2,066,465			2,066,465
Date of Construction or Acquisition	1985
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,012,382
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,066,465
Operating Properties [Member] | 4717-4729 Eubank Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				449,447
Initial Cost of Buildings				3,294,697
Costs Capitalized Subsequent to Acquisition				2,231,233
Land and Improvements				452,263
Building and Improvements				5,523,114
Gross Amount Carried at End of Period	$ 5,975,377			5,975,377
Accumulated Depreciation	$ 3,101,325			3,101,325
Date of Construction or Acquisition	1978
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,975,377
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,101,325
Operating Properties [Member] | 510 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				261,961
Initial Cost of Buildings				2,110,874
Costs Capitalized Subsequent to Acquisition				435,046
Land and Improvements				262,210
Building and Improvements				2,545,671
Gross Amount Carried at End of Period	$ 2,807,881			2,807,881
Accumulated Depreciation	$ 1,452,681			1,452,681
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,807,881
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,452,681
Operating Properties [Member] | 520 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				486,118
Initial Cost of Buildings				4,083,582
Costs Capitalized Subsequent to Acquisition				707,346
Land and Improvements				486,598
Building and Improvements				4,790,448
Gross Amount Carried at End of Period	$ 5,277,046			5,277,046
Accumulated Depreciation	$ 2,478,123			2,478,123
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,277,046
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,478,123
Operating Properties [Member] | 530 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				266,883
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,609,290
Land and Improvements				334,772
Building and Improvements				2,541,401
Gross Amount Carried at End of Period	$ 2,876,173			2,876,173
Accumulated Depreciation	$ 1,320,396			1,320,396
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,876,173
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,320,396
Operating Properties [Member] | 540 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				742,300
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,433,803
Land and Improvements				1,066,839
Building and Improvements				5,109,264
Gross Amount Carried at End of Period	$ 6,176,103			6,176,103
Accumulated Depreciation	$ 1,278,890			1,278,890
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,176,103
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,278,890
Operating Properties [Member] | 5600-5626 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				489,941
Initial Cost of Buildings				3,592,900
Costs Capitalized Subsequent to Acquisition				653,447
Land and Improvements				489,941
Building and Improvements				4,246,347
Gross Amount Carried at End of Period	$ 4,736,288			4,736,288
Accumulated Depreciation	$ 2,315,211			2,315,211
Date of Construction or Acquisition	1989
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,736,288
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,315,211
Operating Properties [Member] | 5601-5659 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				705,660
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,775,225
Land and Improvements				720,100
Building and Improvements				4,760,785
Gross Amount Carried at End of Period	$ 5,480,885			5,480,885
Accumulated Depreciation	$ 2,656,819			2,656,819
Date of Construction or Acquisition	1996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,480,885
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,656,819
Operating Properties [Member] | 5650-5674 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				644,384
Initial Cost of Buildings				4,025,480
Costs Capitalized Subsequent to Acquisition				911,909
Land and Improvements				644,384
Building and Improvements				4,937,389
Gross Amount Carried at End of Period	$ 5,581,773			5,581,773
Accumulated Depreciation	$ 2,587,321			2,587,321
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,581,773
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,587,321
Operating Properties [Member] | 5700 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				408,729
Initial Cost of Buildings				2,697,348
Costs Capitalized Subsequent to Acquisition				1,248,597
Land and Improvements				408,729
Building and Improvements				3,945,945
Gross Amount Carried at End of Period	$ 4,354,674			4,354,674
Accumulated Depreciation	$ 2,349,031			2,349,031
Date of Construction or Acquisition	1990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,354,674
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,349,031
Operating Properties [Member] | 5701-5799 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				694,644
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,793,328
Land and Improvements				700,503
Building and Improvements				5,787,469
Gross Amount Carried at End of Period	$ 6,487,972			6,487,972
Accumulated Depreciation	$ 2,741,387			2,741,387
Date of Construction or Acquisition	1998
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,487,972
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,741,387
Operating Properties [Member] | 5900 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				676,661
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,033,575
Land and Improvements				687,898
Building and Improvements				5,022,338
Gross Amount Carried at End of Period	$ 5,710,236			5,710,236
Accumulated Depreciation	$ 2,731,296			2,731,296
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,710,236
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,731,296
Operating Properties [Member] | 6000 Eastport Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				872,901
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,490,690
Land and Improvements				901,666
Building and Improvements				7,461,925
Gross Amount Carried at End of Period	$ 8,363,591			8,363,591
Accumulated Depreciation	$ 1,844,704			1,844,704
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,363,591
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,844,704
Operating Properties [Member] | 6530 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rock Creek, NC
Encumbrances				0
Initial Cost of Land				305,821
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,984,310
Land and Improvements				335,061
Building and Improvements				4,955,070
Gross Amount Carried at End of Period	$ 5,290,131			5,290,131
Accumulated Depreciation	$ 2,445,869			2,445,869
Date of Construction or Acquisition	1999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,290,131
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,445,869
Operating Properties [Member] | 6532 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rock Creek, NC
Encumbrances				0
Initial Cost of Land				354,903
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,029,460
Land and Improvements				399,988
Building and Improvements				3,984,375
Gross Amount Carried at End of Period	$ 4,384,363			4,384,363
Accumulated Depreciation	$ 2,132,455			2,132,455
Date of Construction or Acquisition	1997
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,384,363
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,132,455
Operating Properties [Member] | 13098 George Weber Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rogers, MN
Encumbrances				0
Initial Cost of Land				895,811
Initial Cost of Buildings				6,004,189
Costs Capitalized Subsequent to Acquisition				342,789
Land and Improvements				895,811
Building and Improvements				6,346,978
Gross Amount Carried at End of Period	$ 7,242,789			7,242,789
Accumulated Depreciation	$ 1,131,645			1,131,645
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,242,789
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,131,645
Operating Properties [Member] | 13220 Wilfred Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rogers, MN
Encumbrances				0
Initial Cost of Land				508,532
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,262,730
Land and Improvements				1,396,324
Building and Improvements				10,374,938
Gross Amount Carried at End of Period	$ 11,771,262			11,771,262
Accumulated Depreciation	$ 1,167,513			1,167,513
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,771,262
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,167,513
Operating Properties [Member] | 13225 Brockton Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Rogers, MN
Encumbrances				0
Initial Cost of Land				1,048,093
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,465,007
Land and Improvements				1,066,159
Building and Improvements				10,446,941
Gross Amount Carried at End of Period	$ 11,513,100			11,513,100
Accumulated Depreciation	$ 1,095,596			1,095,596
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,513,100
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,095,596
Operating Properties [Member] | 1070 Windham Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Romeoville, IL
Encumbrances				0
Initial Cost of Land				8,672,143
Initial Cost of Buildings				24,144,864
Costs Capitalized Subsequent to Acquisition				1,240,599
Land and Improvements				8,672,143
Building and Improvements				25,385,463
Gross Amount Carried at End of Period	$ 34,057,606			34,057,606
Accumulated Depreciation	$ 3,444,236			3,444,236
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 34,057,606
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,444,236
Operating Properties [Member] | 1550 Central Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Roselle, IL
Encumbrances				0
Initial Cost of Land				2,884,492
Initial Cost of Buildings				10,439,793
Costs Capitalized Subsequent to Acquisition				1,445,451
Land and Improvements				2,884,492
Building and Improvements				11,885,244
Gross Amount Carried at End of Period	$ 14,769,736			14,769,736
Accumulated Depreciation	$ 1,757,721			1,757,721
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,769,736
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,757,721
Operating Properties [Member] | 1135 Aviation Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	San Fernando, CA
Encumbrances				0
Initial Cost of Land				3,035,034
Initial Cost of Buildings				2,844,962
Costs Capitalized Subsequent to Acquisition				460,883
Land and Improvements				3,035,034
Building and Improvements				3,305,845
Gross Amount Carried at End of Period	$ 6,340,879			6,340,879
Accumulated Depreciation	$ 520,419			520,419
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,340,879
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 520,419
Operating Properties [Member] | 8715 Bollman Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Savage, MD
Encumbrances				0
Initial Cost of Land				1,263,237
Initial Cost of Buildings				2,633,210
Costs Capitalized Subsequent to Acquisition				216,780
Land and Improvements				1,263,237
Building and Improvements				2,849,990
Gross Amount Carried at End of Period	$ 4,113,227			4,113,227
Accumulated Depreciation	$ 423,573			423,573
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,113,227
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 423,573
Operating Properties [Member] | 8501 East Raintree Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Scottsdale, AZ
Encumbrances				0
Initial Cost of Land				4,076,412
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				27,623,368
Land and Improvements				4,115,137
Building and Improvements				27,584,643
Gross Amount Carried at End of Period	$ 31,699,780			31,699,780
Accumulated Depreciation	$ 10,010,208			10,010,208
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 31,699,780
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 10,010,208
Operating Properties [Member] | 1150 Gateway Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Shakopee, MN
Encumbrances				0
Initial Cost of Land				1,126,865
Initial Cost of Buildings				5,684,178
Costs Capitalized Subsequent to Acquisition				208,099
Land and Improvements				1,126,865
Building and Improvements				5,892,277
Gross Amount Carried at End of Period	$ 7,019,142			7,019,142
Accumulated Depreciation	$ 797,282			797,282
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,019,142
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 797,282
Operating Properties [Member] | 5555 12th Avenue East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Shakopee, MN
Encumbrances				0
Initial Cost of Land				887,285
Initial Cost of Buildings				5,321,200
Costs Capitalized Subsequent to Acquisition				706,086
Land and Improvements				887,285
Building and Improvements				6,027,286
Gross Amount Carried at End of Period	$ 6,914,571			6,914,571
Accumulated Depreciation	$ 938,514			938,514
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,914,571
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 938,514
Operating Properties [Member] | 5651 Innovation Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Shakopee, MN
Encumbrances				0
Initial Cost of Land				1,551,579
Initial Cost of Buildings				9,541,234
Costs Capitalized Subsequent to Acquisition				1,836,241
Land and Improvements				1,552,083
Building and Improvements				11,376,971
Gross Amount Carried at End of Period	$ 12,929,054			12,929,054
Accumulated Depreciation	$ 620,019			620,019
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,929,054
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 620,019
Operating Properties [Member] | 12110 Champion Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Sharonville, OH
Encumbrances				0
Initial Cost of Land				1,337,271
Initial Cost of Buildings				6,135,118
Costs Capitalized Subsequent to Acquisition				619,579
Land and Improvements				1,337,271
Building and Improvements				6,754,698
Gross Amount Carried at End of Period	$ 8,091,969			8,091,969
Accumulated Depreciation	$ 1,079,960			1,079,960
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,091,969
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,079,960
Operating Properties [Member] | 9300 Old Scotland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Shippensburg, PA
Encumbrances				0
Initial Cost of Land				10,232,633
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				84,620,569
Land and Improvements				12,933,027
Building and Improvements				81,920,175
Gross Amount Carried at End of Period	$ 94,853,202			94,853,202
Accumulated Depreciation	$ 8,405,238			8,405,238
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 94,853,202
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 8,405,238
Operating Properties [Member] | 3990 Heritage Oak Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Simi Valley, CA
Encumbrances				0
Initial Cost of Land				1,964,140
Initial Cost of Buildings				10,667,267
Costs Capitalized Subsequent to Acquisition				348,024
Land and Improvements				1,964,140
Building and Improvements				11,015,291
Gross Amount Carried at End of Period	$ 12,979,431			12,979,431
Accumulated Depreciation	$ 1,442,290			1,442,290
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,979,431
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,442,290
Operating Properties [Member] | 3654-3668 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Charles, IL
Encumbrances				0
Initial Cost of Land				643,639
Initial Cost of Buildings				1,645,058
Costs Capitalized Subsequent to Acquisition				241,111
Land and Improvements				643,639
Building and Improvements				1,886,169
Gross Amount Carried at End of Period	$ 2,529,808			2,529,808
Accumulated Depreciation	$ 272,149			272,149
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,529,808
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 272,149
Operating Properties [Member] | 3701 Illinois Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Charles, IL
Encumbrances				0
Initial Cost of Land				672,500
Initial Cost of Buildings				1,288,924
Costs Capitalized Subsequent to Acquisition				136,087
Land and Improvements				672,500
Building and Improvements				1,425,011
Gross Amount Carried at End of Period	$ 2,097,511			2,097,511
Accumulated Depreciation	$ 239,510			239,510
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,097,511
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 239,510
Operating Properties [Member] | 3950-3980 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Charles, IL
Encumbrances				0
Initial Cost of Land				851,080
Initial Cost of Buildings				3,027,753
Costs Capitalized Subsequent to Acquisition				194,238
Land and Improvements				851,080
Building and Improvements				3,221,991
Gross Amount Carried at End of Period	$ 4,073,071			4,073,071
Accumulated Depreciation	$ 499,121			499,121
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,073,071
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 499,121
Operating Properties [Member] | 1501 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Petersburg, FL
Encumbrances				0
Initial Cost of Land				283,474
Initial Cost of Buildings				2,230,868
Costs Capitalized Subsequent to Acquisition				175,893
Land and Improvements				283,474
Building and Improvements				2,406,760
Gross Amount Carried at End of Period	$ 2,690,234			2,690,234
Accumulated Depreciation	$ 343,528			343,528
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,690,234
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 343,528
Operating Properties [Member] | 1527 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Petersburg, FL
Encumbrances				0
Initial Cost of Land				374,284
Initial Cost of Buildings				2,987,226
Costs Capitalized Subsequent to Acquisition				269,805
Land and Improvements				374,284
Building and Improvements				3,257,031
Gross Amount Carried at End of Period	$ 3,631,315			3,631,315
Accumulated Depreciation	$ 458,272			458,272
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,631,315
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 458,272
Operating Properties [Member] | 1551 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	St. Petersburg, FL
Encumbrances				0
Initial Cost of Land				699,797
Initial Cost of Buildings				5,214,438
Costs Capitalized Subsequent to Acquisition				1,049,801
Land and Improvements				699,797
Building and Improvements				6,264,239
Gross Amount Carried at End of Period	$ 6,964,036			6,964,036
Accumulated Depreciation	$ 958,613			958,613
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,964,036
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 958,613
Operating Properties [Member] | 6900 Harbor View Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Suffolk, VA
Encumbrances				0
Initial Cost of Land				904,052
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,905,485
Land and Improvements				807,006
Building and Improvements				9,002,531
Gross Amount Carried at End of Period	$ 9,809,537			9,809,537
Accumulated Depreciation	$ 2,821,271			2,821,271
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,809,537
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,821,271
Operating Properties [Member] | 6920 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Suffolk, VA
Encumbrances				0
Initial Cost of Land				603,391
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,811,694
Land and Improvements				2,628,635
Building and Improvements				4,786,450
Gross Amount Carried at End of Period	$ 7,415,085			7,415,085
Accumulated Depreciation	$ 826,103			826,103
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,415,085
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 826,103
Operating Properties [Member] | 6950 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Suffolk, VA
Encumbrances				0
Initial Cost of Land				929,844
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,399,035
Land and Improvements				794,848
Building and Improvements				6,534,031
Gross Amount Carried at End of Period	$ 7,328,879			7,328,879
Accumulated Depreciation	$ 2,021,547			2,021,547
Date of Construction or Acquisition	2004
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,328,879
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,021,547
Operating Properties [Member] | 1516 Fryar Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Sumner, WA
Encumbrances				0
Initial Cost of Land				1,675,402
Initial Cost of Buildings				5,079,543
Costs Capitalized Subsequent to Acquisition				889,814
Land and Improvements				1,675,402
Building and Improvements				5,969,357
Gross Amount Carried at End of Period	$ 7,644,759			7,644,759
Accumulated Depreciation	$ 1,021,745			1,021,745
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,644,759
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,021,745
Operating Properties [Member] | 3401-3409 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				556,952
Initial Cost of Buildings				3,849,236
Costs Capitalized Subsequent to Acquisition				39,335
Land and Improvements				556,952
Building and Improvements				3,888,571
Gross Amount Carried at End of Period	$ 4,445,523			4,445,523
Accumulated Depreciation	$ 505,356			505,356
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,445,523
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 505,356
Operating Properties [Member] | 3502 Riga Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				201,600
Initial Cost of Buildings				1,263,131
Costs Capitalized Subsequent to Acquisition				239,882
Land and Improvements				201,600
Building and Improvements				1,503,013
Gross Amount Carried at End of Period	$ 1,704,613			1,704,613
Accumulated Depreciation	$ 181,319			181,319
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,704,613
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 181,319
Operating Properties [Member] | 3505 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				936,336
Initial Cost of Buildings				7,155,520
Costs Capitalized Subsequent to Acquisition				1,886
Land and Improvements				936,336
Building and Improvements				7,157,406
Gross Amount Carried at End of Period	$ 8,093,742			8,093,742
Accumulated Depreciation	$ 1,016,212			1,016,212
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,093,742
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,016,212
Operating Properties [Member] | 3608 Queen Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				650,384
Initial Cost of Buildings				4,764,301
Costs Capitalized Subsequent to Acquisition				169,104
Land and Improvements				650,384
Building and Improvements				4,933,405
Gross Amount Carried at End of Period	$ 5,583,789			5,583,789
Accumulated Depreciation	$ 679,515			679,515
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,583,789
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 679,515
Operating Properties [Member] | 5250 Eagle Trail Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				952,860
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,636,749
Land and Improvements				952,860
Building and Improvements				3,636,749
Gross Amount Carried at End of Period	$ 4,589,609			4,589,609
Accumulated Depreciation	$ 1,710,467			1,710,467
Date of Construction or Acquisition	1998
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,589,609
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,710,467
Operating Properties [Member] | 5501-5519 Pioneer Park Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				162,000
Initial Cost of Buildings				1,613,000
Costs Capitalized Subsequent to Acquisition				997,161
Land and Improvements				262,416
Building and Improvements				2,509,745
Gross Amount Carried at End of Period	$ 2,772,161			2,772,161
Accumulated Depreciation	$ 1,486,601			1,486,601
Date of Construction or Acquisition	1981
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,772,161
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,486,601
Operating Properties [Member] | 5690-5694 Crenshaw Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				181,923
Initial Cost of Buildings				1,812,496
Costs Capitalized Subsequent to Acquisition				1,023,603
Land and Improvements				181,923
Building and Improvements				2,836,099
Gross Amount Carried at End of Period	$ 3,018,022			3,018,022
Accumulated Depreciation	$ 1,441,409			1,441,409
Date of Construction or Acquisition	1979
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,018,022
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,441,409
Operating Properties [Member] | 8110 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				912,663
Initial Cost of Buildings				5,425,143
Costs Capitalized Subsequent to Acquisition				357,958
Land and Improvements				912,663
Building and Improvements				5,783,101
Gross Amount Carried at End of Period	$ 6,695,764			6,695,764
Accumulated Depreciation	$ 884,161			884,161
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,695,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 884,161
Operating Properties [Member] | 8130 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				655,668
Initial Cost of Buildings				4,132,076
Costs Capitalized Subsequent to Acquisition				135,482
Land and Improvements				655,668
Building and Improvements				4,267,558
Gross Amount Carried at End of Period	$ 4,923,226			4,923,226
Accumulated Depreciation	$ 640,520			640,520
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,923,226
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 640,520
Operating Properties [Member] | 9020 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				1,718,496
Initial Cost of Buildings				11,697,381
Costs Capitalized Subsequent to Acquisition				913,458
Land and Improvements				1,718,496
Building and Improvements				12,610,839
Gross Amount Carried at End of Period	$ 14,329,335			14,329,335
Accumulated Depreciation	$ 1,699,170			1,699,170
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,329,335
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,699,170
Operating Properties [Member] | 9110 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				1,203,200
Initial Cost of Buildings				7,979,540
Costs Capitalized Subsequent to Acquisition				764,935
Land and Improvements				1,203,200
Building and Improvements				8,744,475
Gross Amount Carried at End of Period	$ 9,947,675			9,947,675
Accumulated Depreciation	$ 1,144,622			1,144,622
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,947,675
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,144,622
Operating Properties [Member] | 9203 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				754,832
Initial Cost of Buildings				4,966,864
Costs Capitalized Subsequent to Acquisition				(33,052)
Land and Improvements				754,832
Building and Improvements				4,933,812
Gross Amount Carried at End of Period	$ 5,688,644			5,688,644
Accumulated Depreciation	$ 705,090			705,090
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,688,644
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 705,090
Operating Properties [Member] | 9319 Peach Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				612,536
Initial Cost of Buildings				4,168,473
Costs Capitalized Subsequent to Acquisition				10,035
Land and Improvements				612,536
Building and Improvements				4,178,508
Gross Amount Carried at End of Period	$ 4,791,044			4,791,044
Accumulated Depreciation	$ 553,112			553,112
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,791,044
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 553,112
Operating Properties [Member] | 9704 Solar Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				374,548
Initial Cost of Buildings				1,354,800
Costs Capitalized Subsequent to Acquisition				763,058
Land and Improvements				374,548
Building and Improvements				2,117,858
Gross Amount Carried at End of Period	$ 2,492,406			2,492,406
Accumulated Depreciation	$ 260,248			260,248
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,492,406
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 260,248
Operating Properties [Member] | 9945 Currie Davis Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				1,134,286
Initial Cost of Buildings				9,241,807
Costs Capitalized Subsequent to Acquisition				381,604
Land and Improvements				1,134,286
Building and Improvements				9,623,410
Gross Amount Carried at End of Period	$ 10,757,696			10,757,696
Accumulated Depreciation	$ 1,384,379			1,384,379
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,757,696
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,384,379
Operating Properties [Member] | 1850 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				3,975,600
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				23,099,819
Land and Improvements				3,975,600
Building and Improvements				23,099,819
Gross Amount Carried at End of Period	$ 27,075,419			27,075,419
Accumulated Depreciation	$ 1,824,610			1,824,610
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 27,075,419
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,824,610
Operating Properties [Member] | 1858 E Encanto Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				877,611
Initial Cost of Buildings				4,485,427
Costs Capitalized Subsequent to Acquisition				412,814
Land and Improvements				877,611
Building and Improvements				4,898,241
Gross Amount Carried at End of Period	$ 5,775,852			5,775,852
Accumulated Depreciation	$ 736,485			736,485
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,775,852
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 736,485
Operating Properties [Member] | 475 W Vaughn St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				1,112,245
Initial Cost of Buildings				2,260,348
Costs Capitalized Subsequent to Acquisition				292,646
Land and Improvements				1,112,245
Building and Improvements				2,552,994
Gross Amount Carried at End of Period	$ 3,665,239			3,665,239
Accumulated Depreciation	$ 430,748			430,748
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,665,239
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 430,748
Operating Properties [Member] | 921 South Park Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				1,192,820
Initial Cost of Buildings				1,580,155
Costs Capitalized Subsequent to Acquisition				481,163
Land and Improvements				1,192,820
Building and Improvements				2,061,319
Gross Amount Carried at End of Period	$ 3,254,139			3,254,139
Accumulated Depreciation	$ 472,215			472,215
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,254,139
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 472,215
Operating Properties [Member] | 8313 West Pierce Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tolleson, AZ
Encumbrances				0
Initial Cost of Land				2,295,090
Initial Cost of Buildings				9,079,811
Costs Capitalized Subsequent to Acquisition				4,106,812
Land and Improvements				2,295,090
Building and Improvements				13,186,623
Gross Amount Carried at End of Period	$ 15,481,713			15,481,713
Accumulated Depreciation	$ 4,180,357			4,180,357
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,481,713
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 4,180,357
Operating Properties [Member] | 8591 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tolleson, AZ
Encumbrances				0
Initial Cost of Land				1,574,912
Initial Cost of Buildings				7,308,021
Costs Capitalized Subsequent to Acquisition				416,866
Land and Improvements				1,574,912
Building and Improvements				7,724,887
Gross Amount Carried at End of Period	$ 9,299,799			9,299,799
Accumulated Depreciation	$ 1,174,021			1,174,021
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 9,299,799
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,174,021
Operating Properties [Member] | 8601 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tolleson, AZ
Encumbrances				0
Initial Cost of Land				1,524,603
Initial Cost of Buildings				6,352,070
Costs Capitalized Subsequent to Acquisition				725,161
Land and Improvements				1,524,603
Building and Improvements				7,077,231
Gross Amount Carried at End of Period	$ 8,601,834			8,601,834
Accumulated Depreciation	$ 1,343,235			1,343,235
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,601,834
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,343,235
Operating Properties [Member] | 5111 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tucker, GA
Encumbrances				0
Initial Cost of Land				435,776
Initial Cost of Buildings				1,875,685
Costs Capitalized Subsequent to Acquisition				499,788
Land and Improvements				435,776
Building and Improvements				2,375,474
Gross Amount Carried at End of Period	$ 2,811,250			2,811,250
Accumulated Depreciation	$ 429,327			429,327
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,811,250
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 429,327
Operating Properties [Member] | 5151 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tucker, GA
Encumbrances				0
Initial Cost of Land				345,061
Initial Cost of Buildings				1,428,840
Costs Capitalized Subsequent to Acquisition				328,461
Land and Improvements				345,061
Building and Improvements				1,757,301
Gross Amount Carried at End of Period	$ 2,102,362			2,102,362
Accumulated Depreciation	$ 330,717			330,717
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,102,362
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 330,717
Operating Properties [Member] | 1100 17th Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Washington, DC
Encumbrances				0
Initial Cost of Land				16,558,660
Initial Cost of Buildings				32,223,978
Costs Capitalized Subsequent to Acquisition				4,819,314
Land and Improvements				16,558,660
Building and Improvements				37,043,292
Gross Amount Carried at End of Period	$ 53,601,952			53,601,952
Accumulated Depreciation	$ 7,352,708			7,352,708
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 53,601,952
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 7,352,708
Operating Properties [Member] | 2100 M Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Washington, DC
Encumbrances				0
Initial Cost of Land				70,000,000
Initial Cost of Buildings				55,123,783
Costs Capitalized Subsequent to Acquisition				1,912,347
Land and Improvements				70,000,000
Building and Improvements				57,036,130
Gross Amount Carried at End of Period	$ 127,036,130			127,036,130
Accumulated Depreciation	$ 8,404,405			8,404,405
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 127,036,130
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 8,404,405
Operating Properties [Member] | 1400 Powis Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Chicago, IL
Encumbrances				0
Initial Cost of Land				578,314
Initial Cost of Buildings				2,448,562
Costs Capitalized Subsequent to Acquisition				73,579
Land and Improvements				578,314
Building and Improvements				2,522,141
Gross Amount Carried at End of Period	$ 3,100,455			3,100,455
Accumulated Depreciation	$ 337,290			337,290
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,100,455
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 337,290
Operating Properties [Member] | 1 Kings Hill Aveune [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				4,288,389
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,930,852
Land and Improvements				3,381,307
Building and Improvements				8,837,934
Gross Amount Carried at End of Period	$ 12,219,241			12,219,241
Accumulated Depreciation	$ 2,698,820			2,698,820
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,219,241
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,698,820
Operating Properties [Member] | 42 Kings Hill Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				5,397,739
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,206,094
Land and Improvements				3,670,842
Building and Improvements				11,932,991
Gross Amount Carried at End of Period	$ 15,603,833			15,603,833
Accumulated Depreciation	$ 3,132,365			3,132,365
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,603,833
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,132,365
Operating Properties [Member] | Liberty Square, Block 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				159,232
Initial Cost of Buildings				1,622,551
Costs Capitalized Subsequent to Acquisition				658,791
Land and Improvements				271,905
Building and Improvements				2,168,670
Gross Amount Carried at End of Period	$ 2,440,575			2,440,575
Accumulated Depreciation	$ 697,578			697,578
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,440,575
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 697,578
Operating Properties [Member] | Liberty Square, Block 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				199,150
Initial Cost of Buildings				1,614,217
Costs Capitalized Subsequent to Acquisition				689,302
Land and Improvements				340,070
Building and Improvements				2,162,599
Gross Amount Carried at End of Period	$ 2,502,669			2,502,669
Accumulated Depreciation	$ 674,983			674,983
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,502,669
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 674,983
Operating Properties [Member] | Liberty Square, Block 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				129,830
Initial Cost of Buildings				1,141,141
Costs Capitalized Subsequent to Acquisition				479,536
Land and Improvements				221,698
Building and Improvements				1,528,809
Gross Amount Carried at End of Period	$ 1,750,507			1,750,507
Accumulated Depreciation	$ 471,382			471,382
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,750,507
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 471,382
Operating Properties [Member] | Liberty Square, Block 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Malling, UK
Encumbrances				0
Initial Cost of Land				71,377
Initial Cost of Buildings				735,993
Costs Capitalized Subsequent to Acquisition				298,534
Land and Improvements				121,883
Building and Improvements				984,021
Gross Amount Carried at End of Period	$ 1,105,904			1,105,904
Accumulated Depreciation	$ 303,533			303,533
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,105,904
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 303,533
Operating Properties [Member] | 1400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Palm Beach, FL
Encumbrances				0
Initial Cost of Land				2,454,972
Initial Cost of Buildings				5,312,829
Costs Capitalized Subsequent to Acquisition				376,958
Land and Improvements				2,454,972
Building and Improvements				5,689,787
Gross Amount Carried at End of Period	$ 8,144,759			8,144,759
Accumulated Depreciation	$ 931,000			931,000
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,144,759
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 931,000
Operating Properties [Member] | 300 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Palm Beach, FL
Encumbrances				0
Initial Cost of Land				1,177,064
Initial Cost of Buildings				2,102,451
Costs Capitalized Subsequent to Acquisition				160,551
Land and Improvements				1,177,064
Building and Improvements				2,263,002
Gross Amount Carried at End of Period	$ 3,440,066			3,440,066
Accumulated Depreciation	$ 358,777			358,777
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,440,066
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 358,777
Operating Properties [Member] | 400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Palm Beach, FL
Encumbrances				0
Initial Cost of Land				1,029,595
Initial Cost of Buildings				1,728,187
Costs Capitalized Subsequent to Acquisition				180,766
Land and Improvements				1,029,595
Building and Improvements				1,908,953
Gross Amount Carried at End of Period	$ 2,938,548			2,938,548
Accumulated Depreciation	$ 312,382			312,382
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,938,548
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 312,382
Operating Properties [Member] | 2935 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Weston, FL
Encumbrances				0
Initial Cost of Land				4,682,521
Initial Cost of Buildings				25,905,126
Costs Capitalized Subsequent to Acquisition				1,435,528
Land and Improvements				4,682,521
Building and Improvements				27,340,654
Gross Amount Carried at End of Period	$ 32,023,175			32,023,175
Accumulated Depreciation	$ 3,358,697			3,358,697
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 32,023,175
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 3,358,697
Operating Properties [Member] | 2945 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Weston, FL
Encumbrances				0
Initial Cost of Land				2,345,242
Initial Cost of Buildings				13,973,766
Costs Capitalized Subsequent to Acquisition				293,777
Land and Improvements				2,345,242
Building and Improvements				14,267,543
Gross Amount Carried at End of Period	$ 16,612,785			16,612,785
Accumulated Depreciation	$ 1,709,525			1,709,525
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 16,612,785
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,709,525
Operating Properties [Member] | 43-47 Hintz Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Wheeling, IL
Encumbrances				0
Initial Cost of Land				2,051,093
Initial Cost of Buildings				18,283,480
Costs Capitalized Subsequent to Acquisition				539,342
Land and Improvements				2,051,093
Building and Improvements				18,822,823
Gross Amount Carried at End of Period	$ 20,873,916			20,873,916
Accumulated Depreciation	$ 2,475,574			2,475,574
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,873,916
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	2,475,574
Operating Properties [Member] | Subtotal Operating Real Estate [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				47,946,455
Initial Cost of Land				1,099,713,438
Initial Cost of Buildings				2,336,140,008
Costs Capitalized Subsequent to Acquisition				2,161,408,921
Land and Improvements				1,153,680,251
Building and Improvements				4,443,582,109
Gross Amount Carried at End of Period	5,597,262,360			5,597,262,360
Accumulated Depreciation	940,612,342			940,612,342
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	5,597,262,360
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 940,612,342
Operating Properties [Member] | 11020 Holly Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Dayton, MN
Encumbrances				0
Initial Cost of Land				2,536,731
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,722,576
Land and Improvements				2,536,731
Building and Improvements				12,722,576
Gross Amount Carried at End of Period	$ 15,259,307			15,259,307
Accumulated Depreciation	$ 475,069			475,069
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,259,307
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 475,069
Operating Properties [Member] | 333 Howard Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Des Plaines, IL
Encumbrances				0
Initial Cost of Land				7,928,724
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				14,264,248
Land and Improvements				7,928,724
Building and Improvements				14,264,248
Gross Amount Carried at End of Period	$ 22,192,972			22,192,972
Accumulated Depreciation	$ 832,239			832,239
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 22,192,972
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 832,239
Operating Properties [Member] | 1951 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				1,115,595
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,618,500
Land and Improvements				1,324,734
Building and Improvements				3,409,361
Gross Amount Carried at End of Period	$ 4,734,095			4,734,095
Accumulated Depreciation	$ 68,813			68,813
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,734,095
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	68,813
Operating Properties [Member] | 1953 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				0
Initial Cost of Land				2,402,820
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,583,503
Land and Improvements				2,853,273
Building and Improvements				6,133,050
Gross Amount Carried at End of Period	8,986,323			8,986,323
Accumulated Depreciation	$ 103,698			103,698
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,986,323
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 103,698
Operating Properties [Member] | 2988 Green Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				2,271,948
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,598,421
Land and Improvements				2,095,033
Building and Improvements				6,775,336
Gross Amount Carried at End of Period	$ 8,870,369			8,870,369
Accumulated Depreciation	$ 56,411			56,411
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,870,369
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 56,411
Operating Properties [Member] | 125 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				464,237
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,840,213
Land and Improvements				1,311,956
Building and Improvements				4,992,494
Gross Amount Carried at End of Period	$ 6,304,450			6,304,450
Accumulated Depreciation	$ 1,143,185			1,143,185
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,304,450
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,143,185
Operating Properties [Member] | 2727 London Groveport Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Groveport, OH
Encumbrances				0
Initial Cost of Land				1,875,607
Initial Cost of Buildings				11,937,935
Costs Capitalized Subsequent to Acquisition				1,594,848
Land and Improvements				1,875,607
Building and Improvements				13,532,783
Gross Amount Carried at End of Period	$ 15,408,390			15,408,390
Accumulated Depreciation	$ 2,154,022			2,154,022
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,408,390
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 2,154,022
Operating Properties [Member] | 120 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				1,243,100
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,603,603
Land and Improvements				1,255,751
Building and Improvements				6,590,952
Gross Amount Carried at End of Period	$ 7,846,703			7,846,703
Accumulated Depreciation	$ 516,447			516,447
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,846,703
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 516,447
Operating Properties [Member] | 130 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				1,171,160
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,045,497
Land and Improvements				1,183,811
Building and Improvements				6,032,846
Gross Amount Carried at End of Period	$ 7,216,657			7,216,657
Accumulated Depreciation	$ 326,307			326,307
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,216,657
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 326,307
Operating Properties [Member] | 4485 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	High Point, NC
Encumbrances				0
Initial Cost of Land				1,827,595
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				6,507,936
Land and Improvements				1,827,595
Building and Improvements				6,507,936
Gross Amount Carried at End of Period	$ 8,335,531			8,335,531
Accumulated Depreciation	$ 174,125			174,125
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,335,531
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 174,125
Operating Properties [Member] | 5430 FAA Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Irving, TX
Encumbrances				0
Initial Cost of Land				2,245,346
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,190,939
Land and Improvements				3,198,031
Building and Improvements				10,238,254
Gross Amount Carried at End of Period	$ 13,436,285			13,436,285
Accumulated Depreciation	$ 101,529			101,529
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,436,285
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 101,529
Operating Properties [Member] | 951 Valleyview Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Irving, TX
Encumbrances				0
Initial Cost of Land				3,899,824
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				14,284,349
Land and Improvements				5,554,903
Building and Improvements				12,629,270
Gross Amount Carried at End of Period	$ 18,184,173			18,184,173
Accumulated Depreciation	$ 225,454			225,454
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 18,184,173
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 225,454
Operating Properties [Member] | 1200 Claybrick Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Landover,MD
Encumbrances				0
Initial Cost of Land				6,876,500
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,392,716
Land and Improvements				4,997,416
Building and Improvements				7,271,800
Gross Amount Carried at End of Period	$ 12,269,216			12,269,216
Accumulated Depreciation	$ 122,940			122,940
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,269,216
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 122,940
Operating Properties [Member] | 1801 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				3,794,963
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				24,116,063
Land and Improvements				5,421,262
Building and Improvements				22,489,764
Gross Amount Carried at End of Period	$ 27,911,026			27,911,026
Accumulated Depreciation	$ 48,880			48,880
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 27,911,026
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 48,880
Operating Properties [Member] | 11440 NW 122 Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Miami, FL
Encumbrances				0
Initial Cost of Land				5,636,564
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,787,507
Land and Improvements				5,944,709
Building and Improvements				10,479,362
Gross Amount Carried at End of Period	$ 16,424,071			16,424,071
Accumulated Depreciation	$ 135,226			135,226
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 16,424,071
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 135,226
Operating Properties [Member] | 11250 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				4,798,886
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,229,788
Land and Improvements				4,798,886
Building and Improvements				9,229,788
Gross Amount Carried at End of Period	$ 14,028,674			14,028,674
Accumulated Depreciation	$ 442,152			442,152
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,028,674
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 442,152
Operating Properties [Member] | 1500 S 71st Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				4,234,407
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,162,853
Land and Improvements				3,333,729
Building and Improvements				11,063,531
Gross Amount Carried at End of Period	$ 14,397,260			14,397,260
Accumulated Depreciation	$ 155,768			155,768
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,397,260
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 155,768
Operating Properties [Member] | 1200 Intrepid Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				404,883
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				29,737,547
Land and Improvements				455,507
Building and Improvements				29,686,923
Gross Amount Carried at End of Period	$ 30,142,430			30,142,430
Accumulated Depreciation	$ 548,890			548,890
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 30,142,430
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 548,890
Operating Properties [Member] | 7205 W Buckeye Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				2,514,425
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,725,015
Land and Improvements				2,514,425
Building and Improvements				10,725,015
Gross Amount Carried at End of Period	$ 13,239,440			13,239,440
Accumulated Depreciation	$ 155,365			155,365
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,239,440
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 155,365
Operating Properties [Member] | 4701 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				419,107
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				13,301,142
Land and Improvements				435,763
Building and Improvements				13,284,486
Gross Amount Carried at End of Period	$ 13,720,249			13,720,249
Accumulated Depreciation	$ 688,698			688,698
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,720,249
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 688,698
Operating Properties [Member] | 5800 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Richmond, VA
Encumbrances				0
Initial Cost of Land				604,146
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,591,578
Land and Improvements				604,146
Building and Improvements				7,591,578
Gross Amount Carried at End of Period	$ 8,195,724			8,195,724
Accumulated Depreciation	$ 419,106			419,106
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,195,724
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 419,106
Operating Properties [Member] | 5800 Technology Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Sandston, VA
Encumbrances				0
Initial Cost of Land				1,741,867
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,042,698
Land and Improvements				1,744,160
Building and Improvements				12,040,405
Gross Amount Carried at End of Period	$ 13,784,565			13,784,565
Accumulated Depreciation	$ 426,034			426,034
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,784,565
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 426,034
Operating Properties [Member] | 1910 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				4,693,504
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				24,629,008
Land and Improvements				4,693,504
Building and Improvements				24,629,008
Gross Amount Carried at End of Period	$ 29,322,512			29,322,512
Accumulated Depreciation	$ 1,755,471			1,755,471
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 29,322,512
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 1,755,471
Operating Properties [Member] | 1930 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				4,069,890
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				24,158,460
Land and Improvements				4,069,890
Building and Improvements				24,158,460
Gross Amount Carried at End of Period	$ 28,228,350			28,228,350
Accumulated Depreciation	$ 702,240			702,240
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 28,228,350
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 702,240
Operating Properties [Member] | 2040 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				3,225,000
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,531,731
Land and Improvements				3,225,000
Building and Improvements				12,531,731
Gross Amount Carried at End of Period	$ 15,756,731			15,756,731
Accumulated Depreciation	$ 547,526			547,526
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 15,756,731
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 547,526
Operating Properties [Member] | 6017 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Palm Beach, FL
Encumbrances				0
Initial Cost of Land				4,513,860
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,167,515
Land and Improvements				4,513,860
Building and Improvements				9,167,515
Gross Amount Carried at End of Period	$ 13,681,375			13,681,375
Accumulated Depreciation	$ 38,247			38,247
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,681,375
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 38,247
Operating Properties [Member] | 6035 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	West Palm Beach, FL
Encumbrances				0
Initial Cost of Land				2,499,894
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,401,996
Land and Improvements				2,499,984
Building and Improvements				5,401,906
Gross Amount Carried at End of Period	$ 7,901,890			7,901,890
Accumulated Depreciation	$ 24,187			24,187
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,901,890
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 24,187
Operating Properties [Member] | Worcester 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Worcester, UK
Encumbrances				0
Initial Cost of Land				843,256
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,234,133
Land and Improvements				1,175,040
Building and Improvements				3,902,349
Gross Amount Carried at End of Period	$ 5,077,389			5,077,389
Accumulated Depreciation	$ 12,897			12,897
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,077,389
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 12,897
Operating Properties [Member] | Maximum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)
Operating Properties [Member] | Maximum [Member] | 627 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1467 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1501 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 869 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 901 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8620 Congdon Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 200 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 250 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 400 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 650 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 651 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 700 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 705 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7165 Ambassador Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7248 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7339 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7437 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8014 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8150 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8250 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8400 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6330 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6350 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6370 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6390 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6520 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6540 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6560 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6580 Snowdrift Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7620 Cetronia Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11222 Melrose Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3095 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3097 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7030 Buford Highway NE [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Barton 150 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1055-1071 Kingsland Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4606 Richlynn Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11800 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11850 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11900 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12104 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12200 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12240 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1071 Thorndale Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1260-1274 Ellis Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 371-377 Meyer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 850-880 Devon Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10 Emery Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2785 Commerce Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1455 Remington Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 150 E Crossroads Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 553 S Joliet Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 400 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8201 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8451 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 860 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3525 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1485 W Commerce Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 40 Logistics Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 135-195 East Elk Trail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 515 Kehoe Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1413 Bradley Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3200 Belmeade Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16325 S Avalon Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1475 Nitterhouse Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 95 Kriner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9000 109th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11701 Goodrich Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12810 Virkler Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2700 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2701 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2730 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2801 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3000 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3005 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4045 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4047 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4525 Statesville Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4835 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4925 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5032 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5033 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5039 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8910 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8916 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8924 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2601 Indian River Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1540 S 54th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4650 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4750 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9645 Gerwig Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2550 John Glenn Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3800 Twin Creeks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 330 South Royal Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 455 Airline Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2130 Baldwin Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 329-333 Herrod Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1250 Hall Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1680 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1700 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2670 Breckinridge Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 170 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 190 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 265 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 285 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1000 Parliament Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4226 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4227 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4234 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4300 Emperor Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1957 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3169 Dodd Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3711 Kennebec Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 917 Lone Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10301-10305 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10321 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10333 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10349-10357 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10365-10375 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10393-10394 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7075 Flying Cloud Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7078 Shady Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1 Truman Drive South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2250 Arthur Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6600 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6675 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7351 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 21705-21707 Mississippi Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 27143 Elwood International Port Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1800 Donaldson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6880 Fairfield Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7000-7018 Fairfield Business [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10721 Jasmine Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2000 Southpointe Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1400 NW 65th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6500 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6501 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6600 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9601 Cosner Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5410 - 5430 Northwest 33rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12601 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12641 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12681-12691 Pala Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 850 S Jupiter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2510 W Main Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4251 North Highway 121 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1150 Pleasant Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 25 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 45 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2011 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2121 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 800 Commerce Parkway West Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 110 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 140 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11835 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11841 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1560 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1575 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7361 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7460 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7462 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 500 McCarthy Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 600 Industrial Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7195 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7253 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12537 Cerise Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1010 Petersburg Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 785 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 805 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 825 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 845 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4198 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4183 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4189 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4193 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4328, 4336 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4344 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4380 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4388 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4475 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4500 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4501 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4523 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4524 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9600 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Unit 5 Logix Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1000 South Loop West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10241 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10245 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10301 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10305 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1050 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10607 Haddington Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10735 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10739 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11201 Greens Crossing Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11220 Ella Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1283 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1287 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1291 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1416 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1420 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 14200 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1424 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1428 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 14300 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 14400 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 15102 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 15150 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16330 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16445 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1646 Rankin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1655 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16580 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16602 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16605 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1665 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16680 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16685 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1755 Trans Central Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4301 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4401 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4501 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5200 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5250 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5500 N. Sam Houston Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8017 Pinemont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8272 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8282 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8301 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8303 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 850 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 860 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8801-19 & 8821-49 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8802-8824 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8825-8839 N Sam Houston Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8850-8872 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 16200 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Cabot III UK1B01 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1011 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1035 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1549 W Glenlake Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 901 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 925 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8241 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8242 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8246 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1305 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1325 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3600 Cobb International Bld NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Unit 1 Bear Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 650 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 680 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1770 Interstate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5801 Columbia Park Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11425 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11503 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1701 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1842 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1902 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 640 S State Road 39 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7528 Walker Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8301 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8500 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7533 Industrial Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 100 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1001 Cedar Hollow Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12,14,16 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 14 Lee Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 18 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 311 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 425 Old Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 50 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 60 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 600 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 700 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1169 Canton Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 65 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 75 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 126-132 Liberty Industrial Pkw [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 95-115 Liberty Industrial Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11150 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11401 NW 134th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11450 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 456 International Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 21 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 250 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 230 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 22750 Cactus Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 150 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 323 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 324 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 619 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1879 Lamont Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 350 Winmeyer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4000 E Airport Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1000 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10003 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10511 & 10611 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 10771 Palm Bay Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1090 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1600-1650 Central Florida Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1902 Cypress Lake Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2000 Park Oaks Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2202 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2212 Taft Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2256 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2351 Investors Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2400 South Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2412 Sand Lake Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2416 Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6200 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6989 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6918 Presidents Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6923 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7022 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7100 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7101 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7315 Kingspointe Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 851 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 950 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 29 Liberty Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9550 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3535 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9700 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 201 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 351 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4000 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4300 South 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4751 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4775 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8th & Walnut Streets [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2626 South 7th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 563 South 63rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1000 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1901 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1909 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3605 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3701 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 800 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 900 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9801 80th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 14630-14650 28th Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2920 Northwest Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5905 Trenton Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6055 Nathan Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1400 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1405 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1500 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1501 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1601 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1651 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2201-2215 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2250-2270 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2280-2300 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2301-2329 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3000 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3001-3037 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3012-3050 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 595 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 601 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 605 SW 16th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2459 Almond Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1221 N Alder Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1920 West Baseline Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 301 Hill Carter Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4101-4127 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4201-4261 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4263-4299 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4263F-N. Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4301-4335 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4337-4379 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4401-4445 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4447-4491 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4501-4549 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4551-4593 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4601-4643 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4645-4683 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4717-4729 Eubank Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 510 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 520 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 530 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 540 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5600-5626 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5601-5659 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5650-5674 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5700 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5701-5799 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5900 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6000 Eastport Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6530 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6532 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 13098 George Weber Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 13220 Wilfred Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 13225 Brockton Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1070 Windham Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1550 Central Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1135 Aviation Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8715 Bollman Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8501 East Raintree Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1150 Gateway Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5555 12th Avenue East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5651 Innovation Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 12110 Champion Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9300 Old Scotland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3990 Heritage Oak Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3654-3668 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3701 Illinois Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3950-3980 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1501 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1527 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1551 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6900 Harbor View Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6920 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6950 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1516 Fryar Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3401-3409 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3502 Riga Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3505 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 3608 Queen Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5250 Eagle Trail Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5501-5519 Pioneer Park Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5690-5694 Crenshaw Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8110 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8130 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9020 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9110 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9203 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9319 Peach Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9704 Solar Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 9945 Currie Davis Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1850 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1858 E Encanto Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 475 W Vaughn St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 921 South Park Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8313 West Pierce Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8591 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 8601 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5111 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5151 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1100 17th Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2100 M Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1400 Powis Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1 Kings Hill Aveune [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 42 Kings Hill Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Liberty Square, Block 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Liberty Square, Block 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Liberty Square, Block 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Liberty Square, Block 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 300 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2935 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2945 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 43-47 Hintz Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11020 Holly Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1951 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1953 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2988 Green Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 125 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2727 London Groveport Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 120 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 130 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4485 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5430 FAA Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 951 Valleyview Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1200 Claybrick Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1801 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11440 NW 122 Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 11250 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1500 S 71st Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 7205 W Buckeye Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 4701 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5800 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 5800 Technology Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1910 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 1930 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 2040 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6017 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | 6035 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Maximum [Member] | Worcester 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	40 years
Operating Properties [Member] | Minimum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)
Operating Properties [Member] | Minimum [Member] | 627 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1467 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1501 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 869 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 901 S Route 53 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8620 Congdon Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 200 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 250 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 400 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 650 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 651 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 700 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 705 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7165 Ambassador Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7248 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7339 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7437 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8014 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8150 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8250 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8400 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6330 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6350 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6370 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6390 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6520 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6540 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6560 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6580 Snowdrift Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7620 Cetronia Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11222 Melrose Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3095 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3097 Presidential Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7030 Buford Highway NE [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Barton 150 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1055-1071 Kingsland Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4606 Richlynn Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11800 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11850 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11900 Baltimore Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12104 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12200 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12240 Indian Creek Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1071 Thorndale Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1260-1274 Ellis Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 371-377 Meyer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 850-880 Devon Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10 Emery Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2785 Commerce Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1455 Remington Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 150 E Crossroads Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 553 S Joliet Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 400 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8201 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8451 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 860 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3525 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1485 W Commerce Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 40 Logistics Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 135-195 East Elk Trail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 515 Kehoe Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1413 Bradley Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3200 Belmeade Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16325 S Avalon Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1475 Nitterhouse Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 95 Kriner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9000 109th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11701 Goodrich Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12810 Virkler Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2700 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2701 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2730 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2801 Hutchison McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3000 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3005 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4045 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4047 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4525 Statesville Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4835 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4925 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5032 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5033 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5039 Sirona Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8910 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8916 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8924 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2601 Indian River Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1540 S 54th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4650 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4750 Lake Forest Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9645 Gerwig Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2550 John Glenn Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3800 Twin Creeks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 330 South Royal Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 455 Airline Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2130 Baldwin Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 329-333 Herrod Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1250 Hall Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1680 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1700 Executive Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2670 Breckinridge Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 170 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 190 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 265 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 285 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1000 Parliament Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4226 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4227 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4234 Surles Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4300 Emperor Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1957 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3169 Dodd Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3711 Kennebec Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 917 Lone Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10301-10305 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10321 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10333 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10349-10357 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10365-10375 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10393-10394 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7075 Flying Cloud Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7078 Shady Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1 Truman Drive South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2250 Arthur Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6600 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6675 Business Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7351 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 21705-21707 Mississippi Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 27143 Elwood International Port Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1800 Donaldson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6880 Fairfield Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7000-7018 Fairfield Business [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10721 Jasmine Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2000 Southpointe Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1400 NW 65th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6500 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6501 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6600 NW 12th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9601 Cosner Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5410 - 5430 Northwest 33rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12601 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12641 Industry Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12681-12691 Pala Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 850 S Jupiter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2510 W Main Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4251 North Highway 121 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1150 Pleasant Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 25 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 45 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2011 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2121 Southtech Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 800 Commerce Parkway West Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 110 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 140 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11835 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11841 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1560 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1575 Hunter Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7361 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7460 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7462 New Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 500 McCarthy Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 600 Industrial Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7195 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7253 Grayson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12537 Cerise Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1010 Petersburg Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 785 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 805 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 825 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 845 Lindbergh Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4198 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4183 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4189 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4193 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4328, 4336 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4344 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4380 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4388 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4475 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4500 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4501 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4523 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4524 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9600 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Unit 5 Logix Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1000 South Loop West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10241 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10245 W Little York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10301 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10305 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1050 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10607 Haddington Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10735 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10739 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11201 Greens Crossing Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11220 Ella Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1283 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1287 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1291 N Post Oak Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1416 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1420 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 14200 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1424 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1428 N Sam Houston Parkway E [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 14300 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 14400 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 15102 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 15150 Sommermeyer St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16330 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16420 West Hardy Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16445 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1646 Rankin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1655 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16580 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16602 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16605 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1665 Townhurst Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16680 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16685 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1755 Trans Central Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4301 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4401 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4501 S Pinemont Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5200 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5250 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5500 N. Sam Houston Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8017 Pinemont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8272 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8282 El Rio Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8301 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8303 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 850 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 860 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8801-19 & 8821-49 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8802-8824 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8825-8839 N Sam Houston Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8850-8872 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 16200 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Cabot III UK1B01 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1011 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1035 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1549 W Glenlake Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 901 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 925 N Hilltop Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8241 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8242 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8246 Sandy Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1305 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1325 Chastain Road NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3600 Cobb International Bld NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Unit 1 Bear Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 650 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 680 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1770 Interstate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5801 Columbia Park Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11425 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11503 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1701 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1842 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1902 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 640 S State Road 39 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7528 Walker Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8301 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8500 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7533 Industrial Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 100 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1001 Cedar Hollow Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12,14,16 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 14 Lee Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 18 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 311 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 425 Old Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 50 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 60 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 600 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 700 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1169 Canton Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 65 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 75 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 126-132 Liberty Industrial Pkw [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 95-115 Liberty Industrial Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11150 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11401 NW 134th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11450 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 456 International Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 21 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4 S Middlesex Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 250 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 230 Moonachie Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 22750 Cactus Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 150 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 323 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 324 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 619 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1879 Lamont Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 350 Winmeyer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4000 E Airport Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1000 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10003 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10511 & 10611 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 10771 Palm Bay Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1090 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1600-1650 Central Florida Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1902 Cypress Lake Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2000 Park Oaks Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2202 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2212 Taft Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2256 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2351 Investors Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2400 South Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2412 Sand Lake Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2416 Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6200 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6989 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6918 Presidents Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6923 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7022 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7100 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7101 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7315 Kingspointe Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 851 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 950 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 29 Liberty Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9550 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3535 Gravel Springs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9700 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 201 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 351 Rouse Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4000 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4300 South 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4751 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4775 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8th & Walnut Streets [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2626 South 7th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 563 South 63rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1000 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1901 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1909 10th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3605 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3701 East Plano Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 800 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 900 Klein Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9801 80th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 14630-14650 28th Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2920 Northwest Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5905 Trenton Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6055 Nathan Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1400 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1405 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1500 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1501 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1601 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1651 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2201-2215 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2250-2270 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2280-2300 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2301-2329 NW 30th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3000 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3001-3037 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3012-3050 NW 25th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 595 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 601 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 605 SW 16th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2459 Almond Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1221 N Alder Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1920 West Baseline Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 301 Hill Carter Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4101-4127 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4201-4261 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4263-4299 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4263F-N. Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4301-4335 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4337-4379 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4401-4445 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4447-4491 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4501-4549 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4551-4593 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4601-4643 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4645-4683 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4717-4729 Eubank Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 510 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 520 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 530 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 540 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5600-5626 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5601-5659 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5650-5674 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5700 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5701-5799 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5900 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6000 Eastport Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6530 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6532 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 13098 George Weber Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 13220 Wilfred Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 13225 Brockton Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1070 Windham Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1550 Central Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1135 Aviation Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8715 Bollman Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8501 East Raintree Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1150 Gateway Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5555 12th Avenue East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5651 Innovation Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 12110 Champion Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9300 Old Scotland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3990 Heritage Oak Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3654-3668 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3701 Illinois Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3950-3980 Swenson Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1501 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1527 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1551 102nd Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6900 Harbor View Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6920 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6950 Harbour View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1516 Fryar Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3401-3409 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3502 Riga Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3505 Cragmont Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 3608 Queen Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5250 Eagle Trail Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5501-5519 Pioneer Park Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5690-5694 Crenshaw Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8110 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8130 Anderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9020 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9110 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9203 King Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9319 Peach Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9704 Solar Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 9945 Currie Davis Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1850 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1858 E Encanto Dr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 475 W Vaughn St [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 921 South Park Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8313 West Pierce Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8591 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 8601 West Washington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5111 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5151 S Royal Atlanta Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1100 17th Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2100 M Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1400 Powis Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1 Kings Hill Aveune [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 42 Kings Hill Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Liberty Square, Block 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Liberty Square, Block 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Liberty Square, Block 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Liberty Square, Block 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 300 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 400 Northpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2935 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2945 West Corporate Lakes Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 43-47 Hintz Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11020 Holly Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1951 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1953 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2988 Green Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 125 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2727 London Groveport Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 120 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 130 Caliber Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4485 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5430 FAA Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 951 Valleyview Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1200 Claybrick Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1801 South 16th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11440 NW 122 Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 11250 NW 122nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1500 S 71st Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 7205 W Buckeye Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 4701 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5800 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 5800 Technology Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1910 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 1930 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 2040 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6017 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | 6035 Southern Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Operating Properties [Member] | Minimum [Member] | Worcester 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable life (years)	5 years
Development in Progress [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost of Land				3,043,130
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,388,458
Land and Improvements				0
Building and Improvements				7,431,588
Gross Amount Carried at End of Period	$ 7,431,588			7,431,588
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,431,588
Development in Progress [Member] | 2250 East Bardin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Arlington, TX
Encumbrances				0
Initial Cost of Land				4,754,659
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				24,262,394
Land and Improvements				0
Building and Improvements				29,017,052
Gross Amount Carried at End of Period	$ 29,017,052			29,017,052
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 29,017,052
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 350 N York Rd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Bensenville, IL
Encumbrances				0
Accumulated Depreciation	$ 0			0
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 100 Carolina Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Carlisle, PA
Encumbrances				0
Initial Cost of Land				10,830,187
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				21,472,109
Land and Improvements				0
Building and Improvements				32,302,296
Gross Amount Carried at End of Period	$ 32,302,296			32,302,296
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 32,302,296
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1955 TW Alexander Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Durham, NC
Encumbrances				0
Initial Cost of Land				758,503
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,481,188
Land and Improvements				0
Building and Improvements				8,239,691
Gross Amount Carried at End of Period	$ 8,239,691			8,239,691
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,239,691
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 650 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	King of Prussia, PA
Encumbrances				0
Initial Cost of Land				488,529
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,914,012
Land and Improvements				0
Building and Improvements				8,402,541
Gross Amount Carried at End of Period	$ 8,402,541			8,402,541
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,402,541
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 875 Maxham Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lithia Springs, GA
Encumbrances				0
Initial Cost of Land				445,493
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				11,272,084
Land and Improvements				0
Building and Improvements				11,717,577
Gross Amount Carried at End of Period	$ 11,717,577			11,717,577
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 11,717,577
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 11430 NW 122 Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				5,790,968
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,969,067
Land and Improvements				0
Building and Improvements				14,760,035
Gross Amount Carried at End of Period	$ 14,760,035			14,760,035
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 14,760,035
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1075 King George Post Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Edison, NJ
Encumbrances				0
Initial Cost of Land				0
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				13,168,246
Land and Improvements				0
Building and Improvements				13,168,246
Gross Amount Carried at End of Period	$ 13,168,246			13,168,246
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,168,246
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1720 West 135th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Gardena, CA
Encumbrances				0
Initial Cost of Land				7,423,389
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				12,948,990
Land and Improvements				0
Building and Improvements				20,372,379
Gross Amount Carried at End of Period	$ 20,372,379			20,372,379
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,372,379
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 2980 Green Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greer, SC
Encumbrances				0
Initial Cost of Land				16,338
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,441,655
Land and Improvements				0
Building and Improvements				5,457,993
Gross Amount Carried at End of Period	$ 5,457,993			5,457,993
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,457,993
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 7157 Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover, MD
Encumbrances				0
Initial Cost of Land				3,875,203
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,929,287
Land and Improvements				0
Building and Improvements				8,804,490
Gross Amount Carried at End of Period	$ 8,804,490			8,804,490
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,804,490
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1200 Claybrick Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Landover, MD
Encumbrances				0
Initial Cost of Land				6,876,500
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				942,883
Land and Improvements				0
Building and Improvements				7,819,383
Gross Amount Carried at End of Period	$ 7,819,383			7,819,383
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,819,383
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1806 Highway 146th South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				1,055,035
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,838,576
Land and Improvements				0
Building and Improvements				2,893,611
Gross Amount Carried at End of Period	$ 2,893,611			2,893,611
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,893,611
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1814 Highway 146th South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				1,420,014
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				433,719
Land and Improvements				0
Building and Improvements				1,853,733
Gross Amount Carried at End of Period	$ 1,853,733			1,853,733
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,853,733
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1302 Wharton Weems Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	LaPorte, TX
Encumbrances				0
Initial Cost of Land				4,378,890
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,263,432
Land and Improvements				0
Building and Improvements				6,642,322
Gross Amount Carried at End of Period	$ 6,642,322			6,642,322
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,642,322
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 8801 Congdon Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Mertztown, PA
Encumbrances				0
Initial Cost of Land				23,016,646
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				47,804,802
Land and Improvements				0
Building and Improvements				70,821,448
Gross Amount Carried at End of Period	$ 70,821,448			70,821,448
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 70,821,448
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1050 Constitution Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Philadelphia, PA
Encumbrances				0
Initial Cost of Land				1,969,501
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				37,458,724
Land and Improvements				0
Building and Improvements				39,428,225
Gross Amount Carried at End of Period	$ 39,428,225			39,428,225
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 39,428,225
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1500 S 71st Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				4,234,407
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,648,512
Land and Improvements				0
Building and Improvements				8,882,919
Gross Amount Carried at End of Period	$ 8,882,919			8,882,919
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,882,919
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 3929 Shutterfly Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				592,233
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,093,931
Land and Improvements				0
Building and Improvements				10,686,164
Gross Amount Carried at End of Period	$ 10,686,164			10,686,164
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,686,164
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 9724 Alabama Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	San Bernardino, CA
Encumbrances				0
Initial Cost of Land				4,140,486
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,367,860
Land and Improvements				0
Building and Improvements				12,508,346
Gross Amount Carried at End of Period	$ 12,508,346			12,508,346
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,508,346
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | 1870 W Rio Salado Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tempe, AZ
Encumbrances				0
Initial Cost of Land				2,272,702
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				42,762,030
Land and Improvements				0
Building and Improvements				45,034,732
Gross Amount Carried at End of Period	$ 45,034,732			45,034,732
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 45,034,732
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Development in Progress [Member] | Worcester 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Worcester, UK
Encumbrances				0
Initial Cost of Land				3,172,249
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				9,054,991
Land and Improvements				0
Building and Improvements				12,227,240
Gross Amount Carried at End of Period	$ 12,227,240			12,227,240
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 12,227,240
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	0
Development in Progress [Member] | Total Development in Progress [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				0
Initial Cost of Land				90,555,062
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				287,916,950
Land and Improvements				0
Building and Improvements				378,472,011
Gross Amount Carried at End of Period	378,472,011			378,472,011
Accumulated Depreciation	0			0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	378,472,011
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Mill Creek Road East Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Allentown, PA
Encumbrances				0
Initial Cost of Land				7,175,000
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				0
Land and Improvements				7,175,000
Building and Improvements				0
Gross Amount Carried at End of Period	$ 7,175,000			7,175,000
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 7,175,000
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 100 and 160 Dulty's Lane Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Burlington, NJ
Encumbrances				0
Initial Cost of Land				3,746,363
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				387,026
Land and Improvements				4,133,389
Building and Improvements				0
Gross Amount Carried at End of Period	$ 4,133,389			4,133,389
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,133,389
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 180 Dulty's Lane Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Burlington, NJ
Encumbrances				0
Initial Cost of Land				2,866,850
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				329,151
Land and Improvements				3,196,001
Building and Improvements				0
Gross Amount Carried at End of Period	$ 3,196,001			3,196,001
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,196,001
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 180 Dulty's Lane Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Butts County, GA
Encumbrances				0
Initial Cost of Land				2,866,568
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,926,717
Land and Improvements				4,793,285
Building and Improvements				0
Gross Amount Carried at End of Period	$ 4,793,285			4,793,285
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,793,285
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Camden Town Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Camden, NJ
Encumbrances				0
Initial Cost of Land				11,303,073
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				10,252,135
Land and Improvements				21,555,208
Building and Improvements				0
Gross Amount Carried at End of Period	$ 21,555,208			21,555,208
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,555,208
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 12912 Virkler Drive Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				208,646
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				88,354
Land and Improvements				297,000
Building and Improvements				0
Gross Amount Carried at End of Period	$ 297,000			297,000
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2010
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 297,000
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Shopton Ridge Business Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Encumbrances				0
Initial Cost of Land				644,925
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,859,095
Land and Improvements				2,504,020
Building and Improvements				0
Gross Amount Carried at End of Period	$ 2,504,020			2,504,020
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,504,020
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Mountain Creek Business Park L [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Dallas, TX
Encumbrances				0
Initial Cost of Land				7,984,928
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,022,735
Land and Improvements				13,007,663
Building and Improvements				0
Gross Amount Carried at End of Period	$ 13,007,663			13,007,663
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,007,663
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Holly Lane North Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Dayton, MN
Encumbrances				0
Initial Cost of Land				889,205
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				181,612
Land and Improvements				1,070,817
Building and Improvements				0
Gross Amount Carried at End of Period	$ 1,070,817			1,070,817
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,070,817
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | French Lake Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Dayton/Rogers, MN
Encumbrances				0
Initial Cost of Land				13,513,632
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,385,459
Land and Improvements				20,899,091
Building and Improvements				0
Gross Amount Carried at End of Period	$ 20,899,091			20,899,091
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 20,899,091
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Flying Cloud Drive Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Eden Prairie, MN
Encumbrances				0
Initial Cost of Land				2,051,631
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,369,545
Land and Improvements				6,421,176
Building and Improvements				0
Gross Amount Carried at End of Period	$ 6,421,176			6,421,176
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,421,176
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Camelback 303 Business Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Goodyear, AZ
Encumbrances				0
Initial Cost of Land				16,857,556
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,352,280
Land and Improvements				21,209,836
Building and Improvements				0
Gross Amount Carried at End of Period	$ 21,209,836			21,209,836
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 21,209,836
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Pleasant Ridge Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Greensboro, NC
Encumbrances				0
Initial Cost of Land				564,535
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,976,650
Land and Improvements				3,541,185
Building and Improvements				0
Gross Amount Carried at End of Period	$ 3,541,185			3,541,185
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,541,185
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Ridge Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hanover, MD
Encumbrances				0
Initial Cost of Land				3,371,183
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				(583,887)
Land and Improvements				2,787,296
Building and Improvements				0
Gross Amount Carried at End of Period	$ 2,787,296			2,787,296
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2008
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,787,296
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Interwood Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				5,160,668
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				29,015
Land and Improvements				5,189,683
Building and Improvements				0
Gross Amount Carried at End of Period	$ 5,189,683			5,189,683
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,189,683
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Rankin Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				5,756,865
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				382,693
Land and Improvements				6,139,558
Building and Improvements				0
Gross Amount Carried at End of Period	$ 6,139,558			6,139,558
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2007
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,139,558
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Richey Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Houston, TX
Encumbrances				0
Initial Cost of Land				26,135,466
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				7,024,965
Land and Improvements				33,160,431
Building and Improvements				0
Gross Amount Carried at End of Period	$ 33,160,431			33,160,431
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 33,160,431
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Cabin Branch Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Hyattsville, MD
Encumbrances				0
Initial Cost of Land				507,337
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,099
Land and Improvements				510,436
Building and Improvements				0
Gross Amount Carried at End of Period	$ 510,436			510,436
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 510,436
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Frye Road and Valley View Lane Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Irving, TX
Encumbrances				0
Initial Cost of Land				1,917,440
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				962,176
Land and Improvements				2,879,616
Building and Improvements				0
Gross Amount Carried at End of Period	$ 2,879,616			2,879,616
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,879,616
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Kent County, UK [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Kent, UK
Encumbrances				0
Initial Cost of Land				0
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				35,246,308
Land and Improvements				35,246,308
Building and Improvements				0
Gross Amount Carried at End of Period	$ 35,246,308			35,246,308
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 35,246,308
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Port Crossing Commerce Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	La Porte, TX
Encumbrances				0
Initial Cost of Land				9,401,409
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,382,139
Land and Improvements				10,783,548
Building and Improvements				0
Gross Amount Carried at End of Period	$ 10,783,548			10,783,548
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,783,548
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Commodore Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Logan, NJ
Encumbrances				0
Initial Cost of Land				792,118
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				1,455,989
Land and Improvements				2,248,107
Building and Improvements				0
Gross Amount Carried at End of Period	$ 2,248,107			2,248,107
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	1995
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 2,248,107
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Spring Creek Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Lower Macungie Twp, PA
Encumbrances				0
Initial Cost of Land				33,567,060
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				8,106,014
Land and Improvements				41,673,074
Building and Improvements				0
Gross Amount Carried at End of Period	$ 41,673,074			41,673,074
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 41,673,074
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 380 Old Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				1,344,809
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				0
Land and Improvements				1,344,809
Building and Improvements				0
Gross Amount Carried at End of Period	$ 1,344,809			1,344,809
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 1,344,809
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 6 Great Valley Parkway Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				603,050
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,598,259
Land and Improvements				3,201,309
Building and Improvements				0
Gross Amount Carried at End of Period	$ 3,201,309			3,201,309
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2015
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,201,309
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Old Morehall Rd Land (Morelli) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Malvern, PA
Encumbrances				0
Initial Cost of Land				3,343,863
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				33,548
Land and Improvements				3,377,411
Building and Improvements				0
Gross Amount Carried at End of Period	$ 3,377,411			3,377,411
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2016
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,377,411
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Miami International Tradeport Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Medley, FL
Encumbrances				0
Initial Cost of Land				9,202,254
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				15,840,193
Land and Improvements				25,042,447
Building and Improvements				0
Gross Amount Carried at End of Period	$ 25,042,447			25,042,447
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 25,042,447
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 557 Nazareth Pike Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Nazareth, PA
Encumbrances				0
Initial Cost of Land				4,667,646
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				532,716
Land and Improvements				5,200,362
Building and Improvements				0
Gross Amount Carried at End of Period	$ 5,200,362			5,200,362
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 5,200,362
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Southern Boulevard Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Palm Beach County, FL
Encumbrances				0
Initial Cost of Land				8,051,351
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				5,160,487
Land and Improvements				13,211,838
Building and Improvements				0
Gross Amount Carried at End of Period	$ 13,211,838			13,211,838
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 13,211,838
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Buckeye Logistics Center West Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Encumbrances				0
Initial Cost of Land				6,173,841
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				4,014,937
Land and Improvements				10,188,778
Building and Improvements				0
Gross Amount Carried at End of Period	$ 10,188,778			10,188,778
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 10,188,778
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Woodlands Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Sandston, VA
Encumbrances				0
Initial Cost of Land				148,314
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				21,717
Land and Improvements				170,031
Building and Improvements				0
Gross Amount Carried at End of Period	$ 170,031			170,031
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	1996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 170,031
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Northsight Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Scottsdale, AZ
Encumbrances				0
Initial Cost of Land				6,176,464
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				2,204,597
Land and Improvements				8,381,061
Building and Improvements				0
Gross Amount Carried at End of Period	$ 8,381,061			8,381,061
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2005
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 8,381,061
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Suffolk Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Suffolk, VA
Encumbrances				0
Initial Cost of Land				2,715,714
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				823,895
Land and Improvements				3,539,609
Building and Improvements				0
Gross Amount Carried at End of Period	$ 3,539,609			3,539,609
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 3,539,609
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | 6119 W. Linebaugh Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				180,136
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				30,499
Land and Improvements				210,635
Building and Improvements				0
Gross Amount Carried at End of Period	$ 210,635			210,635
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 210,635
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0
Land Held for Development [Member] | Legacy Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Location	Tampa, FL
Encumbrances				0
Initial Cost of Land				3,289,423
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				3,168,809
Land and Improvements				6,458,232
Building and Improvements				0
Gross Amount Carried at End of Period	$ 6,458,232			6,458,232
Accumulated Depreciation	$ 0			0
Date of Construction or Acquisition	2006
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 6,458,232
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	0
Land Held for Development [Member] | Total Land Held for Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances				0
Initial Cost of Land				203,179,323
Initial Cost of Buildings				0
Costs Capitalized Subsequent to Acquisition				127,568,927
Land and Improvements				330,748,250
Building and Improvements				0
Gross Amount Carried at End of Period	330,748,250			330,748,250
Accumulated Depreciation	0			$ 0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	330,748,250
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	$ 0