XML 143 R122.htm IDEA: XBRL DOCUMENT v3.10.0.1
Schedule III (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2018
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       $ 45,926,884
Initial Cost of Land       1,626,394,997
Initial Cost of Buildings       2,455,572,009
Costs Capitalized Subsequent to Acquisition       2,484,311,716
Land and Improvements       1,552,949,573
Building and Improvements       5,127,952,770
Gross Amount Carried at End of Period $ 5,800,901,000 $ 5,483,640,000 $ 6,324,860,000 6,680,903,343
Accumulated Depreciation 851,624,000 746,539,000 973,077,000 974,972,397
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,800,901,000 5,483,640,000 6,324,860,000  
Real Estate Additions 1,390,838,000 648,742,000 445,142,000  
Real Estate, Cost of Real Estate Sold (510,836,000) (331,481,000) (1,286,362,000)  
Real Estate, Gross 6,680,903,343 5,800,901,000 5,483,640,000  
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 851,624,000 746,539,000 973,077,000  
Real Estate Accumulated Depreciation, Depreciation Expense 143,652,000 149,044,000 168,077,000  
Real Estate Accumulated Depreciation, Real Estate Sold (20,304,000) (43,959,000) (394,615,000)  
Real Estate Accumulated Depreciation 974,972,397 $ 851,624,000 $ 746,539,000  
Athene, New York Life and Wells Fargo [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       347,900,000
Operating Properties [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       45,926,884
Initial Cost of Land       1,071,864,310
Initial Cost of Buildings       2,336,735,248
Costs Capitalized Subsequent to Acquisition       2,520,891,843
Land and Improvements       1,256,705,693
Building and Improvements       4,655,783,748
Gross Amount Carried at End of Period 5,912,490,441     5,912,490,441
Accumulated Depreciation 974,972,397     974,972,397
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,912,490,441      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 974,972,397      
Operating Properties [Member] | 1467 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       12,052,635
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       35,350,875
Land and Improvements       12,334,030
Building and Improvements       35,069,480
Gross Amount Carried at End of Period 47,403,510     47,403,510
Accumulated Depreciation 4,214,259     4,214,259
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 47,403,510      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,214,259      
Operating Properties [Member] | 1501 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,813,324
Initial Cost of Buildings       18,874,059
Costs Capitalized Subsequent to Acquisition       6,378,428
Land and Improvements       5,816,839
Building and Improvements       25,248,972
Gross Amount Carried at End of Period 31,065,811     31,065,811
Accumulated Depreciation 8,227,740     8,227,740
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 31,065,811      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,227,740      
Operating Properties [Member] | 869 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,194,223
Initial Cost of Buildings       4,201,881
Costs Capitalized Subsequent to Acquisition       230,036
Land and Improvements       1,194,223
Building and Improvements       4,431,918
Gross Amount Carried at End of Period 5,626,141     5,626,141
Accumulated Depreciation 658,252     658,252
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,626,141      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 658,252      
Operating Properties [Member] | 901 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,055,066
Initial Cost of Buildings       5,984,093
Costs Capitalized Subsequent to Acquisition       879,888
Land and Improvements       2,055,066
Building and Improvements       6,863,981
Gross Amount Carried at End of Period 8,919,047     8,919,047
Accumulated Depreciation 1,230,963     1,230,963
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,919,047      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,230,963      
Operating Properties [Member] | 8620 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       38,328,000
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       36,647,068
Land and Improvements       38,328,000
Building and Improvements       36,647,068
Gross Amount Carried at End of Period 74,975,068     74,975,068
Accumulated Depreciation 3,101,872     3,101,872
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 74,975,068      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,101,872      
Operating Properties [Member] | 200 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,722,683
Initial Cost of Buildings       18,922,645
Costs Capitalized Subsequent to Acquisition       2,434,125
Land and Improvements       4,722,683
Building and Improvements       21,356,770
Gross Amount Carried at End of Period 26,079,453     26,079,453
Accumulated Depreciation 7,396,339     7,396,339
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 26,079,453      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,396,339      
Operating Properties [Member] | 250 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,599,936
Initial Cost of Buildings       12,099,145
Costs Capitalized Subsequent to Acquisition       2,199,097
Land and Improvements       3,717,733
Building and Improvements       14,180,445
Gross Amount Carried at End of Period 17,898,178     17,898,178
Accumulated Depreciation 5,997,398     5,997,398
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 17,898,178      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,997,398      
Operating Properties [Member] | 400 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,065,500
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       31,538,572
Land and Improvements       8,184,096
Building and Improvements       31,419,976
Gross Amount Carried at End of Period 39,604,072     39,604,072
Accumulated Depreciation 16,558,762     16,558,762
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 39,604,072      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 16,558,762      
Operating Properties [Member] | 650 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,208,248
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       32,440,853
Land and Improvements       9,961,788
Building and Improvements       27,687,313
Gross Amount Carried at End of Period 37,649,101     37,649,101
Accumulated Depreciation 11,327,870     11,327,870
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 37,649,101      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 11,327,870      
Operating Properties [Member] | 651 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,308,646
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       18,551,417
Land and Improvements       4,308,646
Building and Improvements       18,551,417
Gross Amount Carried at End of Period 22,860,063     22,860,063
Accumulated Depreciation 10,468,080     10,468,080
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,860,063      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 10,468,080      
Operating Properties [Member] | 700 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,473,120
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       20,401,484
Land and Improvements       4,174,970
Building and Improvements       19,699,634
Gross Amount Carried at End of Period 23,874,604     23,874,604
Accumulated Depreciation 11,536,583     11,536,583
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 23,874,604      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 11,536,583      
Operating Properties [Member] | 705 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,594,027
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       28,810,136
Land and Improvements       10,596,767
Building and Improvements       28,807,396
Gross Amount Carried at End of Period 39,404,163     39,404,163
Accumulated Depreciation 17,664,832     17,664,832
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 39,404,163      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 17,664,832      
Operating Properties [Member] | 7165 Ambassador Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       792,999
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,694,609
Land and Improvements       804,848
Building and Improvements       4,682,760
Gross Amount Carried at End of Period 5,487,608     5,487,608
Accumulated Depreciation 2,265,255     2,265,255
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,487,608      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,265,255      
Operating Properties [Member] | 7248 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,670,849
Initial Cost of Buildings       13,307,408
Costs Capitalized Subsequent to Acquisition       4,665,457
Land and Improvements       2,670,673
Building and Improvements       17,973,041
Gross Amount Carried at End of Period 20,643,714     20,643,714
Accumulated Depreciation 9,990,484     9,990,484
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,643,714      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 9,990,484      
Operating Properties [Member] | 7339 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,187,776
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,592,257
Land and Improvements       1,197,447
Building and Improvements       7,582,586
Gross Amount Carried at End of Period 8,780,033     8,780,033
Accumulated Depreciation 4,441,217     4,441,217
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,780,033      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,441,217      
Operating Properties [Member] | 7437 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       717,488
Initial Cost of Buildings       5,022,413
Costs Capitalized Subsequent to Acquisition       4,003,719
Land and Improvements       726,651
Building and Improvements       9,016,968
Gross Amount Carried at End of Period 9,743,619     9,743,619
Accumulated Depreciation 5,686,680     5,686,680
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,743,619      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,686,680      
Operating Properties [Member] | 8014 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,019,258
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,646,983
Land and Improvements       3,645,117
Building and Improvements       13,021,124
Gross Amount Carried at End of Period 16,666,241     16,666,241
Accumulated Depreciation 5,718,258     5,718,258
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,666,241      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,718,258      
Operating Properties [Member] | 8150 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,564,167
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,443,051
Land and Improvements       2,571,466
Building and Improvements       9,435,752
Gross Amount Carried at End of Period 12,007,218     12,007,218
Accumulated Depreciation 4,279,822     4,279,822
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,007,218      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,279,822      
Operating Properties [Member] | 8250 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,025,667
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,254,712
Land and Improvements       1,035,854
Building and Improvements       5,244,525
Gross Amount Carried at End of Period 6,280,379     6,280,379
Accumulated Depreciation 2,154,620     2,154,620
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,280,379      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,154,620      
Operating Properties [Member] | 8400 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,725,948
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       27,402,563
Land and Improvements       7,521,211
Building and Improvements       26,607,300
Gross Amount Carried at End of Period 34,128,511     34,128,511
Accumulated Depreciation 8,740,124     8,740,124
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 34,128,511      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,740,124      
Operating Properties [Member] | 6330 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       531,268
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,029,991
Land and Improvements       532,047
Building and Improvements       6,029,212
Gross Amount Carried at End of Period 6,561,259     6,561,259
Accumulated Depreciation 4,218,156     4,218,156
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,561,259      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,218,156      
Operating Properties [Member] | 6350 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       360,027
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,526,060
Land and Improvements       560,691
Building and Improvements       4,325,396
Gross Amount Carried at End of Period 4,886,087     4,886,087
Accumulated Depreciation 2,757,186     2,757,186
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,886,087      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,757,186      
Operating Properties [Member] | 6370 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       540,795
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,369,686
Land and Improvements       541,459
Building and Improvements       4,369,022
Gross Amount Carried at End of Period 4,910,481     4,910,481
Accumulated Depreciation 2,735,162     2,735,162
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,910,481      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,735,162      
Operating Properties [Member] | 6390 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       707,203
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,446,028
Land and Improvements       707,867
Building and Improvements       3,445,364
Gross Amount Carried at End of Period 4,153,231     4,153,231
Accumulated Depreciation 2,054,135     2,054,135
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,153,231      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,054,135      
Operating Properties [Member] | 6520 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       453,315
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,589,269
Land and Improvements       484,361
Building and Improvements       1,558,223
Gross Amount Carried at End of Period 2,042,584     2,042,584
Accumulated Depreciation 770,493     770,493
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,042,584      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 770,493      
Operating Properties [Member] | 6540 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       422,042
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,337,127
Land and Improvements       422,730
Building and Improvements       5,336,439
Gross Amount Carried at End of Period 5,759,169     5,759,169
Accumulated Depreciation 3,335,623     3,335,623
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,759,169      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,335,623      
Operating Properties [Member] | 6560 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       458,281
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,856,517
Land and Improvements       458,945
Building and Improvements       3,855,853
Gross Amount Carried at End of Period 4,314,798     4,314,798
Accumulated Depreciation 2,468,547     2,468,547
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,314,798      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,468,547      
Operating Properties [Member] | 6580 Snowdrift Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       388,328
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,876,767
Land and Improvements       389,081
Building and Improvements       4,876,014
Gross Amount Carried at End of Period 5,265,095     5,265,095
Accumulated Depreciation 3,417,222     3,417,222
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,265,095      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,417,222      
Operating Properties [Member] | 7620 Cetronia Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,091,806
Initial Cost of Buildings       3,851,456
Costs Capitalized Subsequent to Acquisition       780,423
Land and Improvements       1,093,724
Building and Improvements       4,629,961
Gross Amount Carried at End of Period 5,723,685     5,723,685
Accumulated Depreciation 2,503,775     2,503,775
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,723,685      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,503,775      
Operating Properties [Member] | 2250 East Bardin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances      
Initial Cost of Land       4,754,659
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,110,192
Land and Improvements       5,864,850
Building and Improvements       30,284,926
Gross Amount Carried at End of Period 36,149,776     36,149,776
Accumulated Depreciation 434,113     434,113
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 36,149,776      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 434,113      
Operating Properties [Member] | 3095 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       200,351
Initial Cost of Buildings       1,729,161
Costs Capitalized Subsequent to Acquisition       255,502
Land and Improvements       200,351
Building and Improvements       1,984,663
Gross Amount Carried at End of Period 2,185,014     2,185,014
Accumulated Depreciation 436,384     436,384
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,185,014      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 436,384      
Operating Properties [Member] | 3097 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       188,680
Initial Cost of Buildings       1,721,048
Costs Capitalized Subsequent to Acquisition       405,231
Land and Improvements       188,680
Building and Improvements       2,126,279
Gross Amount Carried at End of Period 2,314,959     2,314,959
Accumulated Depreciation 359,030     359,030
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,314,959      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 359,030      
Operating Properties [Member] | 7030 Buford Highway NE [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       919,850
Initial Cost of Buildings       4,051,340
Costs Capitalized Subsequent to Acquisition       954,682
Land and Improvements       919,850
Building and Improvements       5,006,022
Gross Amount Carried at End of Period 5,925,872     5,925,872
Accumulated Depreciation 1,064,051     1,064,051
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,925,872      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,064,051      
Operating Properties [Member] | Barton 150 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances      
Initial Cost of Land       2,196,955
Initial Cost of Buildings       13,643,981
Costs Capitalized Subsequent to Acquisition       (3,633,742)
Land and Improvements       1,692,997
Building and Improvements       10,514,197
Gross Amount Carried at End of Period 12,207,194     12,207,194
Accumulated Depreciation 1,647,568     1,647,568
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,207,194      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,647,568      
Operating Properties [Member] | 1055-1071 Kingsland Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       727,294
Initial Cost of Buildings       2,367,529
Costs Capitalized Subsequent to Acquisition       706,473
Land and Improvements       727,294
Building and Improvements       3,074,002
Gross Amount Carried at End of Period 3,801,296     3,801,296
Accumulated Depreciation 659,693     659,693
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,801,296      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 659,693      
Operating Properties [Member] | 4606 Richlynn Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       299,600
Initial Cost of Buildings       1,818,861
Costs Capitalized Subsequent to Acquisition       722,788
Land and Improvements       299,600
Building and Improvements       2,541,649
Gross Amount Carried at End of Period 2,841,249     2,841,249
Accumulated Depreciation 1,231,732     1,231,732
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,841,249      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,231,732      
Operating Properties [Member] | 11800 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,769,962
Initial Cost of Buildings       1,829,028
Costs Capitalized Subsequent to Acquisition       267,937
Land and Improvements       2,663,725
Building and Improvements       2,203,203
Gross Amount Carried at End of Period 4,866,928     4,866,928
Accumulated Depreciation 430,470     430,470
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,866,928      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 430,470      
Operating Properties [Member] | 11850 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,595,044
Initial Cost of Buildings       2,415,132
Costs Capitalized Subsequent to Acquisition       164,477
Land and Improvements       3,457,162
Building and Improvements       2,717,491
Gross Amount Carried at End of Period 6,174,653     6,174,653
Accumulated Depreciation 759,246     759,246
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,174,653      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 759,246      
Operating Properties [Member] | 11900 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,492,036
Initial Cost of Buildings       2,024,038
Costs Capitalized Subsequent to Acquisition       520,179
Land and Improvements       3,358,104
Building and Improvements       2,678,149
Gross Amount Carried at End of Period 6,036,253     6,036,253
Accumulated Depreciation 851,104     851,104
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,036,253      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 851,104      
Operating Properties [Member] | 12104 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,021,752
Initial Cost of Buildings       2,503,802
Costs Capitalized Subsequent to Acquisition       339,825
Land and Improvements       2,021,752
Building and Improvements       2,843,627
Gross Amount Carried at End of Period 4,865,379     4,865,379
Accumulated Depreciation 765,205     765,205
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,865,379      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 765,205      
Operating Properties [Member] | 12200 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,347,882
Initial Cost of Buildings       1,460,291
Costs Capitalized Subsequent to Acquisition       623,867
Land and Improvements       1,347,882
Building and Improvements       2,084,158
Gross Amount Carried at End of Period 3,432,040     3,432,040
Accumulated Depreciation 479,038     479,038
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,432,040      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 479,038      
Operating Properties [Member] | 12240 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,479,307
Initial Cost of Buildings       2,159,997
Costs Capitalized Subsequent to Acquisition       791,665
Land and Improvements       1,479,307
Building and Improvements       2,951,663
Gross Amount Carried at End of Period 4,430,970     4,430,970
Accumulated Depreciation 635,369     635,369
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,430,970      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 635,369      
Operating Properties [Member] | 1071 Thorndale Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,173,006
Initial Cost of Buildings       2,280,788
Costs Capitalized Subsequent to Acquisition       291,248
Land and Improvements       2,016,715
Building and Improvements       2,728,327
Gross Amount Carried at End of Period 4,745,042     4,745,042
Accumulated Depreciation 605,234     605,234
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,745,042      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 605,234      
Operating Properties [Member] | 1260-1274 Ellis Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,298,560
Initial Cost of Buildings       4,020,382
Costs Capitalized Subsequent to Acquisition       360,126
Land and Improvements       2,298,560
Building and Improvements       4,380,508
Gross Amount Carried at End of Period 6,679,068     6,679,068
Accumulated Depreciation 910,658     910,658
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,679,068      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 910,658      
Operating Properties [Member] | 371-377 Meyer Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,903,423
Initial Cost of Buildings       3,563,953
Costs Capitalized Subsequent to Acquisition       581,650
Land and Improvements       1,903,423
Building and Improvements       4,145,603
Gross Amount Carried at End of Period 6,049,026     6,049,026
Accumulated Depreciation 835,950     835,950
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,049,026      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 835,950      
Operating Properties [Member] | 350 North York Road [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       (1,288,668)
Land and Improvements       1,754,462
Building and Improvements       4,763,320
Gross Amount Carried at End of Period 6,517,782     6,517,782
Accumulated Depreciation 1,668     1,668
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,517,782      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,668      
Operating Properties [Member] | 850-880 Devon Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,958,756
Initial Cost of Buildings       7,959,013
Costs Capitalized Subsequent to Acquisition       780,065
Land and Improvements       2,958,756
Building and Improvements       8,739,078
Gross Amount Carried at End of Period 11,697,834     11,697,834
Accumulated Depreciation 1,719,794     1,719,794
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,697,834      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,719,794      
Operating Properties [Member] | 10 Emery Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,591,216
Initial Cost of Buildings       32,941,818
Costs Capitalized Subsequent to Acquisition       8,083,706
Land and Improvements       8,947,574
Building and Improvements       37,669,166
Gross Amount Carried at End of Period 46,616,740     46,616,740
Accumulated Depreciation 6,155,898     6,155,898
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 46,616,740      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 6,155,898      
Operating Properties [Member] | 2785 Commerce Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,961,623
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       46,707,077
Land and Improvements       12,009,985
Building and Improvements       46,658,715
Gross Amount Carried at End of Period 58,668,700     58,668,700
Accumulated Depreciation 7,007,059     7,007,059
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 58,668,700      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,007,059      
Operating Properties [Member] | 1455 Remington Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,501,294
Initial Cost of Buildings       10,704,719
Costs Capitalized Subsequent to Acquisition       26,008
Land and Improvements       2,501,294
Building and Improvements       10,730,727
Gross Amount Carried at End of Period 13,232,021     13,232,021
Accumulated Depreciation 1,725,320     1,725,320
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,232,021      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,725,320      
Operating Properties [Member] | 150 E Crossroads Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,078,949
Initial Cost of Buildings       14,143,377
Costs Capitalized Subsequent to Acquisition       1,303,328
Land and Improvements       3,078,949
Building and Improvements       15,446,705
Gross Amount Carried at End of Period 18,525,654     18,525,654
Accumulated Depreciation 2,859,514     2,859,514
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 18,525,654      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,859,514      
Operating Properties [Member] | 553 S Joliet Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,764,831
Initial Cost of Buildings       15,109,947
Costs Capitalized Subsequent to Acquisition       2,933,005
Land and Improvements       3,764,831
Building and Improvements       18,042,952
Gross Amount Carried at End of Period 21,807,783     21,807,783
Accumulated Depreciation 3,595,146     3,595,146
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,807,783      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,595,146      
Operating Properties [Member] | 400 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,859,106
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,772,102
Land and Improvements       2,865,575
Building and Improvements       12,765,633
Gross Amount Carried at End of Period 15,631,208     15,631,208
Accumulated Depreciation 4,196,273     4,196,273
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,631,208      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,196,273      
Operating Properties [Member] | 8201 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,089,719
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,261,318
Land and Improvements       2,222,168
Building and Improvements       9,128,869
Gross Amount Carried at End of Period 11,351,037     11,351,037
Accumulated Depreciation 2,428,891     2,428,891
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,351,037      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,428,891      
Operating Properties [Member] | 8451 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,752,708
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       40,889,400
Land and Improvements       11,511,499
Building and Improvements       38,130,609
Gross Amount Carried at End of Period 49,642,108     49,642,108
Accumulated Depreciation 12,471,964     12,471,964
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 49,642,108      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 12,471,964      
Operating Properties [Member] | 860 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,118,881
Initial Cost of Buildings       18,885,486
Costs Capitalized Subsequent to Acquisition       7,522,275
Land and Improvements       8,118,881
Building and Improvements       26,407,761
Gross Amount Carried at End of Period 34,526,642     34,526,642
Accumulated Depreciation 11,645,718     11,645,718
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 34,526,642      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 11,645,718      
Operating Properties [Member] | 3525 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,391,065
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,767,103
Land and Improvements       1,629,677
Building and Improvements       5,528,491
Gross Amount Carried at End of Period 7,158,168     7,158,168
Accumulated Depreciation 219,606     219,606
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,158,168      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 219,606      
Operating Properties [Member] | 3535 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,807,020
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,458,307
Land and Improvements       3,077,350
Building and Improvements       9,187,977
Gross Amount Carried at End of Period 12,265,327     12,265,327
Accumulated Depreciation 333,446     333,446
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,265,327      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 333,446      
Operating Properties [Member] | Tesco Trucking Station [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,755,835
Initial Cost of Buildings       20,336,288
Costs Capitalized Subsequent to Acquisition       29,673,532
Land and Improvements       5,755,835
Building and Improvements       23,917,697
Gross Amount Carried at End of Period 29,673,532     29,673,532
Accumulated Depreciation 200,687     200,687
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 29,673,532      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 200,687      
Operating Properties [Member] | 100 Carolina Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,830,187
Costs Capitalized Subsequent to Acquisition       32,143,152
Land and Improvements       10,830,187
Building and Improvements       32,143,152
Gross Amount Carried at End of Period 42,973,339     42,973,339
Accumulated Depreciation 538,847     538,847
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 42,973,339      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 538,847      
Operating Properties [Member] | 105 Amor Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,529,232
Land and Improvements       5,229,867
Building and Improvements       2,299,365
Gross Amount Carried at End of Period 7,529,232     7,529,232
Accumulated Depreciation 30,122     30,122
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,529,232      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 30,122      
Operating Properties [Member] | 1485 W Commerce Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,249,868
Initial Cost of Buildings       13,886,039
Costs Capitalized Subsequent to Acquisition       2,344,063
Land and Improvements       4,095,262
Building and Improvements       16,384,708
Gross Amount Carried at End of Period 20,479,970     20,479,970
Accumulated Depreciation 7,258,566     7,258,566
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,479,970      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,258,566      
Operating Properties [Member] | 40 Logistics Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,981,850
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       33,016,988
Land and Improvements       8,081,272
Building and Improvements       32,917,566
Gross Amount Carried at End of Period 40,998,838     40,998,838
Accumulated Depreciation 6,179,664     6,179,664
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 40,998,838      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 6,179,664      
Operating Properties [Member] | 135-195 East Elk Trail [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,873,094
Initial Cost of Buildings       12,430,320
Costs Capitalized Subsequent to Acquisition       2,711,630
Land and Improvements       4,873,094
Building and Improvements       15,141,950
Gross Amount Carried at End of Period 20,015,044     20,015,044
Accumulated Depreciation 2,164,779     2,164,779
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,015,044      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,164,779      
Operating Properties [Member] | 515 Kehoe Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,523,427
Initial Cost of Buildings       14,581,705
Costs Capitalized Subsequent to Acquisition       1,016,882
Land and Improvements       5,523,427
Building and Improvements       15,598,587
Gross Amount Carried at End of Period 21,122,014     21,122,014
Accumulated Depreciation 2,222,829     2,222,829
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,122,014      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,222,829      
Operating Properties [Member] | 1413 Bradley Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       247,477
Initial Cost of Buildings       2,028,322
Costs Capitalized Subsequent to Acquisition       233,527
Land and Improvements       247,477
Building and Improvements       2,261,849
Gross Amount Carried at End of Period 2,509,326     2,509,326
Accumulated Depreciation 255,915     255,915
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,509,326      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 255,915      
Operating Properties [Member] | 3200 Belmeade Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,042,453
Initial Cost of Buildings       8,027,974
Costs Capitalized Subsequent to Acquisition       595,707
Land and Improvements       1,042,453
Building and Improvements       8,623,681
Gross Amount Carried at End of Period 9,666,134     9,666,134
Accumulated Depreciation 1,493,508     1,493,508
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,666,134      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,493,508      
Operating Properties [Member] | 16325 S Avalon Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       26,432,369
Initial Cost of Buildings       19,669,675
Costs Capitalized Subsequent to Acquisition       387,002
Land and Improvements       26,476,167
Building and Improvements       20,012,879
Gross Amount Carried at End of Period 46,489,046     46,489,046
Accumulated Depreciation 669,481     669,481
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 46,489,046      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 669,481      
Operating Properties [Member] | 1475 Nitterhouse Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,081,007
Initial Cost of Buildings       39,002,011
Costs Capitalized Subsequent to Acquisition       2,091,556
Land and Improvements       7,081,007
Building and Improvements       41,093,567
Gross Amount Carried at End of Period 48,174,574     48,174,574
Accumulated Depreciation 7,376,996     7,376,996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 48,174,574      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,376,996      
Operating Properties [Member] | 95 Kriner Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,695,501
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       35,058,041
Land and Improvements       9,407,871
Building and Improvements       34,345,671
Gross Amount Carried at End of Period 43,753,542     43,753,542
Accumulated Depreciation 10,389,249     10,389,249
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 43,753,542      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 10,389,249      
Operating Properties [Member] | 9000 109th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,251,043
Initial Cost of Buildings       11,662,995
Costs Capitalized Subsequent to Acquisition       119,919
Land and Improvements       1,251,043
Building and Improvements       11,782,914
Gross Amount Carried at End of Period 13,033,957     13,033,957
Accumulated Depreciation 2,461,549     2,461,549
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,033,957      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,461,549      
Operating Properties [Member] | 11701 Goodrich Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,054,621
Initial Cost of Buildings       6,356,151
Costs Capitalized Subsequent to Acquisition       1,022,332
Land and Improvements       2,054,621
Building and Improvements       7,378,482
Gross Amount Carried at End of Period 9,433,103     9,433,103
Accumulated Depreciation 1,633,427     1,633,427
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,433,103      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,633,427      
Operating Properties [Member] | 12810 Virkler Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       475,368
Initial Cost of Buildings       2,367,586
Costs Capitalized Subsequent to Acquisition       921,907
Land and Improvements       476,262
Building and Improvements       3,288,598
Gross Amount Carried at End of Period 3,764,860     3,764,860
Accumulated Depreciation 662,261     662,261
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,764,860      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 662,261      
Operating Properties [Member] | 2700 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       912,500
Initial Cost of Buildings       4,721,259
Costs Capitalized Subsequent to Acquisition       366,811
Land and Improvements       912,500
Building and Improvements       5,088,070
Gross Amount Carried at End of Period 6,000,570     6,000,570
Accumulated Depreciation 1,049,544     1,049,544
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,000,570      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,049,544      
Operating Properties [Member] | 2701 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,275,000
Initial Cost of Buildings       4,649,750
Costs Capitalized Subsequent to Acquisition       684,784
Land and Improvements       1,275,000
Building and Improvements       5,334,534
Gross Amount Carried at End of Period 6,609,534     6,609,534
Accumulated Depreciation 1,115,197     1,115,197
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,609,534      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,115,197      
Operating Properties [Member] | 2730 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,878,750
Initial Cost of Buildings       10,129,499
Costs Capitalized Subsequent to Acquisition       170,089
Land and Improvements       1,878,750
Building and Improvements       10,299,588
Gross Amount Carried at End of Period 12,178,338     12,178,338
Accumulated Depreciation 1,967,588     1,967,588
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,178,338      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,967,588      
Operating Properties [Member] | 2801 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,065,000
Initial Cost of Buildings       6,975,250
Costs Capitalized Subsequent to Acquisition       813,680
Land and Improvements       1,065,000
Building and Improvements       7,788,930
Gross Amount Carried at End of Period 8,853,930     8,853,930
Accumulated Depreciation 1,490,060     1,490,060
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,853,930      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,490,060      
Operating Properties [Member] | 3000 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,831,250
Initial Cost of Buildings       10,779,412
Costs Capitalized Subsequent to Acquisition       1,146,648
Land and Improvements       1,831,250
Building and Improvements       11,926,060
Gross Amount Carried at End of Period 13,757,310     13,757,310
Accumulated Depreciation 2,435,771     2,435,771
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,757,310      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,435,771      
Operating Properties [Member] | 3005 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,990,000
Initial Cost of Buildings       6,561,540
Costs Capitalized Subsequent to Acquisition       1,169,186
Land and Improvements       1,990,000
Building and Improvements       7,730,726
Gross Amount Carried at End of Period 9,720,726     9,720,726
Accumulated Depreciation 1,619,220     1,619,220
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,720,726      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,619,220      
Operating Properties [Member] | 4045 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,418,928
Initial Cost of Buildings       7,511,050
Costs Capitalized Subsequent to Acquisition       631,990
Land and Improvements       1,418,928
Building and Improvements       8,143,040
Gross Amount Carried at End of Period 9,561,968     9,561,968
Accumulated Depreciation 1,703,407     1,703,407
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,561,968      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,703,407      
Operating Properties [Member] | 4047 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,279,004
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,399,096
Land and Improvements       1,279,004
Building and Improvements       6,399,096
Gross Amount Carried at End of Period 7,678,100     7,678,100
Accumulated Depreciation 1,281,462     1,281,462
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,678,100      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,281,462      
Operating Properties [Member] | 4525 Statesville Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       841,250
Initial Cost of Buildings       5,279,315
Costs Capitalized Subsequent to Acquisition       667,246
Land and Improvements       837,144
Building and Improvements       5,950,667
Gross Amount Carried at End of Period 6,787,811     6,787,811
Accumulated Depreciation 1,047,780     1,047,780
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,787,811      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,047,780      
Operating Properties [Member] | 4835 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       3,194,355
Initial Cost of Land       690,750
Initial Cost of Buildings       5,086,388
Costs Capitalized Subsequent to Acquisition       94,118
Land and Improvements       690,750
Building and Improvements       5,180,506
Gross Amount Carried at End of Period 5,871,256     5,871,256
Accumulated Depreciation 865,138     865,138
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,871,256      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 865,138      
Operating Properties [Member] | 4925 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       3,227,439
Initial Cost of Land       603,003
Initial Cost of Buildings       4,969,011
Costs Capitalized Subsequent to Acquisition       152,435
Land and Improvements       603,003
Building and Improvements       5,121,446
Gross Amount Carried at End of Period 5,724,449     5,724,449
Accumulated Depreciation 968,523     968,523
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,724,449      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 968,523      
Operating Properties [Member] | 5032 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,416,763
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,030,334
Land and Improvements       1,416,763
Building and Improvements       9,030,334
Gross Amount Carried at End of Period 10,447,097     10,447,097
Accumulated Depreciation 776,614     776,614
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,447,097      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 776,614      
Operating Properties [Member] | 5033 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       2,753,026
Initial Cost of Land       509,247
Initial Cost of Buildings       4,710,218
Costs Capitalized Subsequent to Acquisition       165,463
Land and Improvements       613,962
Building and Improvements       4,770,966
Gross Amount Carried at End of Period 5,384,928     5,384,928
Accumulated Depreciation 831,612     831,612
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,384,928      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 831,612      
Operating Properties [Member] | 5039 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,027,500
Initial Cost of Buildings       6,172,807
Costs Capitalized Subsequent to Acquisition       62,651
Land and Improvements       1,027,500
Building and Improvements       6,235,458
Gross Amount Carried at End of Period 7,262,958     7,262,958
Accumulated Depreciation 670,560     670,560
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,262,958      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 670,560      
Operating Properties [Member] | 8910 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       527,873
Initial Cost of Buildings       4,959,206
Costs Capitalized Subsequent to Acquisition       360,419
Land and Improvements       527,873
Building and Improvements       5,319,625
Gross Amount Carried at End of Period 5,847,498     5,847,498
Accumulated Depreciation 983,509     983,509
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,847,498      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 983,509      
Operating Properties [Member] | 8916 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       557,730
Initial Cost of Buildings       5,785,333
Costs Capitalized Subsequent to Acquisition       555,839
Land and Improvements       557,730
Building and Improvements       6,341,172
Gross Amount Carried at End of Period 6,898,902     6,898,902
Accumulated Depreciation 1,372,889     1,372,889
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,898,902      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,372,889      
Operating Properties [Member] | 8924 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       654,713
Initial Cost of Buildings       5,365,823
Costs Capitalized Subsequent to Acquisition       (55,823)
Land and Improvements       654,713
Building and Improvements       5,310,000
Gross Amount Carried at End of Period 5,964,713     5,964,713
Accumulated Depreciation 269,234     269,234
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,964,713      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 269,234      
Operating Properties [Member] | 3923 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,967,121
Land and Improvements       895,209
Building and Improvements       9,071,912
Gross Amount Carried at End of Period 9,967,121     9,967,121
Accumulated Depreciation 70,798     70,798
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,967,121      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 70,798      
Operating Properties [Member] | 3929 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       592,233
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       581,457
Land and Improvements       1,173,690
Building and Improvements       10,559,454
Gross Amount Carried at End of Period 11,733,144     11,733,144
Accumulated Depreciation 217,685     217,685
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,733,144      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 217,685      
Operating Properties [Member] | 2601 Indian River Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,711,746
Initial Cost of Buildings       10,418,032
Costs Capitalized Subsequent to Acquisition       493,191
Land and Improvements       1,711,746
Building and Improvements       10,911,223
Gross Amount Carried at End of Period 12,622,969     12,622,969
Accumulated Depreciation 1,970,775     1,970,775
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,622,969      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,970,775      
Operating Properties [Member] | 1540 S 54th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,540,236
Initial Cost of Buildings       20,130,552
Costs Capitalized Subsequent to Acquisition       928,916
Land and Improvements       3,540,236
Building and Improvements       21,059,468
Gross Amount Carried at End of Period 24,599,704     24,599,704
Accumulated Depreciation 3,668,514     3,668,514
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 24,599,704      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,668,514      
Operating Properties [Member] | 4650 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,030,242
Initial Cost of Buildings       4,003,024
Costs Capitalized Subsequent to Acquisition       388,666
Land and Improvements       1,030,242
Building and Improvements       4,391,689
Gross Amount Carried at End of Period 5,421,931     5,421,931
Accumulated Depreciation 870,081     870,081
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,421,931      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 870,081      
Operating Properties [Member] | 4750 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,138,166
Initial Cost of Buildings       5,914,789
Costs Capitalized Subsequent to Acquisition       240,972
Land and Improvements       1,138,166
Building and Improvements       6,155,761
Gross Amount Carried at End of Period 7,293,927     7,293,927
Accumulated Depreciation 1,122,251     1,122,251
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,293,927      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,122,251      
Operating Properties [Member] | 15025 Proctor Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       27,991,514
Land and Improvements       16,149,929
Building and Improvements       11,841,585
Gross Amount Carried at End of Period 27,991,514     27,991,514
Accumulated Depreciation 26,802     26,802
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 27,991,514      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 26,802      
Operating Properties [Member] | 9645 Gerwig Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,915,960
Initial Cost of Buildings       6,461,228
Costs Capitalized Subsequent to Acquisition       507,087
Land and Improvements       1,915,960
Building and Improvements       6,968,315
Gross Amount Carried at End of Period 8,884,275     8,884,275
Accumulated Depreciation 1,143,213     1,143,213
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,884,275      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,143,213      
Operating Properties [Member] | 2550 John Glenn Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       540,601
Initial Cost of Buildings       5,129,342
Costs Capitalized Subsequent to Acquisition       1,072,491
Land and Improvements       540,601
Building and Improvements       6,201,833
Gross Amount Carried at End of Period 6,742,434     6,742,434
Accumulated Depreciation 1,046,557     1,046,557
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,742,434      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,046,557      
Operating Properties [Member] | 3800 Twin Creeks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       549,393
Initial Cost of Buildings       4,643,302
Costs Capitalized Subsequent to Acquisition       481,884
Land and Improvements       549,393
Building and Improvements       5,125,186
Gross Amount Carried at End of Period 5,674,579     5,674,579
Accumulated Depreciation 891,452     891,452
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,674,579      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 891,452      
Operating Properties [Member] | 5959 Randolph St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       88,344,713
Land and Improvements       34,612,210
Building and Improvements       53,732,503
Gross Amount Carried at End of Period 88,344,713     88,344,713
Accumulated Depreciation 1,313,050     1,313,050
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 88,344,713      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,313,050      
Operating Properties [Member] | 330 South Royal Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,091,426
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,402,502
Land and Improvements       2,091,426
Building and Improvements       11,402,502
Gross Amount Carried at End of Period 13,493,928     13,493,928
Accumulated Depreciation 1,288,604     1,288,604
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,493,928      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,288,604      
Operating Properties [Member] | 455 Airline Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       312,701
Initial Cost of Buildings       2,311,531
Costs Capitalized Subsequent to Acquisition       489,677
Land and Improvements       312,701
Building and Improvements       2,801,208
Gross Amount Carried at End of Period 3,113,909     3,113,909
Accumulated Depreciation 606,996     606,996
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,113,909      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 606,996      
Operating Properties [Member] | 2130 Baldwin Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,172,032
Initial Cost of Buildings       7,350,782
Costs Capitalized Subsequent to Acquisition       418,907
Land and Improvements       3,172,032
Building and Improvements       7,769,689
Gross Amount Carried at End of Period 10,941,721     10,941,721
Accumulated Depreciation 1,450,318     1,450,318
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,941,721      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,450,318      
Operating Properties [Member] | 11020 Holly Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,536,731
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,279,946
Land and Improvements       2,536,731
Building and Improvements       12,279,946
Gross Amount Carried at End of Period 14,816,677     14,816,677
Accumulated Depreciation 786,823     786,823
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,816,677      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 786,823      
Operating Properties [Member] | 329-333 Herrod Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,039,559
Initial Cost of Buildings       20,863,051
Costs Capitalized Subsequent to Acquisition       2,285,014
Land and Improvements       4,039,559
Building and Improvements       23,148,065
Gross Amount Carried at End of Period 27,187,624     27,187,624
Accumulated Depreciation 4,102,628     4,102,628
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 27,187,624      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,102,628      
Operating Properties [Member] | 1250 Hall Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       829,570
Initial Cost of Buildings       4,778,327
Costs Capitalized Subsequent to Acquisition       171,544
Land and Improvements       831,611
Building and Improvements       4,947,830
Gross Amount Carried at End of Period 5,779,441     5,779,441
Accumulated Depreciation 1,575,091     1,575,091
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,779,441      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,575,091      
Operating Properties [Member] | 333 Howard Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,928,724
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       14,263,106
Land and Improvements       7,928,724
Building and Improvements       14,263,106
Gross Amount Carried at End of Period 22,191,830     22,191,830
Accumulated Depreciation 1,330,094     1,330,094
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,191,830      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,330,094      
Operating Properties [Member] | 131 Aldersgate Street & 14-17 Carthusian Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,594,064
Initial Cost of Buildings       1,301,980
Costs Capitalized Subsequent to Acquisition       0
Land and Improvements       3,594,064
Building and Improvements       1,301,980
Gross Amount Carried at End of Period 4,896,044     4,896,044
Accumulated Depreciation 8,199     8,199
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,896,044      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,199      
Operating Properties [Member] | 1680 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,928,412
Initial Cost of Buildings       4,651,819
Costs Capitalized Subsequent to Acquisition       1,154,075
Land and Improvements       1,928,412
Building and Improvements       5,805,894
Gross Amount Carried at End of Period 7,734,306     7,734,306
Accumulated Depreciation 1,268,370     1,268,370
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,734,306      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,268,370      
Operating Properties [Member] | 1700 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,082,072
Initial Cost of Buildings       2,496,599
Costs Capitalized Subsequent to Acquisition       625,991
Land and Improvements       1,082,072
Building and Improvements       3,122,590
Gross Amount Carried at End of Period 4,204,662     4,204,662
Accumulated Depreciation 776,229     776,229
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,204,662      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 776,229      
Operating Properties [Member] | 2670 Breckinridge Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,676,415
Initial Cost of Buildings       4,567,592
Costs Capitalized Subsequent to Acquisition       980,381
Land and Improvements       1,676,415
Building and Improvements       5,547,974
Gross Amount Carried at End of Period 7,224,389     7,224,389
Accumulated Depreciation 1,104,805     1,104,805
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,224,389      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,104,805      
Operating Properties [Member] | 170 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       598,348
Initial Cost of Buildings       3,643,756
Costs Capitalized Subsequent to Acquisition       1,228,006
Land and Improvements       598,918
Building and Improvements       4,871,192
Gross Amount Carried at End of Period 5,470,110     5,470,110
Accumulated Depreciation 1,448,618     1,448,618
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,470,110      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,448,618      
Operating Properties [Member] | 190 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       551,663
Initial Cost of Buildings       3,310,993
Costs Capitalized Subsequent to Acquisition       251,300
Land and Improvements       552,211
Building and Improvements       3,561,744
Gross Amount Carried at End of Period 4,113,955     4,113,955
Accumulated Depreciation 1,166,823     1,166,823
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,113,955      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,166,823      
Operating Properties [Member] | 265 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       901,444
Initial Cost of Buildings       5,751,389
Costs Capitalized Subsequent to Acquisition       193,199
Land and Improvements       902,374
Building and Improvements       5,943,658
Gross Amount Carried at End of Period 6,846,032     6,846,032
Accumulated Depreciation 2,239,383     2,239,383
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,846,032      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,239,383      
Operating Properties [Member] | 285 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       975,433
Initial Cost of Buildings       5,851,990
Costs Capitalized Subsequent to Acquisition       1,173,262
Land and Improvements       976,393
Building and Improvements       7,024,292
Gross Amount Carried at End of Period 8,000,685     8,000,685
Accumulated Depreciation 2,105,505     2,105,505
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,000,685      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,105,505      
Operating Properties [Member] | 1000 Parliament Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,229,000
Initial Cost of Buildings       7,064,506
Costs Capitalized Subsequent to Acquisition       985,898
Land and Improvements       2,229,000
Building and Improvements       8,050,404
Gross Amount Carried at End of Period 10,279,404     10,279,404
Accumulated Depreciation 978,653     978,653
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,279,404      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 978,653      
Operating Properties [Member] | 4226 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,440,000
Initial Cost of Buildings       7,932,265
Costs Capitalized Subsequent to Acquisition       306,380
Land and Improvements       1,440,000
Building and Improvements       8,238,645
Gross Amount Carried at End of Period 9,678,645     9,678,645
Accumulated Depreciation 1,247,620     1,247,620
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,678,645      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,247,620      
Operating Properties [Member] | 4227 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,500,000
Initial Cost of Buildings       5,624,030
Costs Capitalized Subsequent to Acquisition       234,711
Land and Improvements       1,500,000
Building and Improvements       5,858,740
Gross Amount Carried at End of Period 7,358,740     7,358,740
Accumulated Depreciation 692,281     692,281
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,358,740      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 692,281      
Operating Properties [Member] | 4234 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,440,000
Initial Cost of Buildings       7,356,161
Costs Capitalized Subsequent to Acquisition       (11,072)
Land and Improvements       1,440,000
Building and Improvements       7,345,089
Gross Amount Carried at End of Period 8,785,089     8,785,089
Accumulated Depreciation 982,836     982,836
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,785,089      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 982,836      
Operating Properties [Member] | 4300 Emperor Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,576,500
Initial Cost of Buildings       4,240,961
Costs Capitalized Subsequent to Acquisition       189,629
Land and Improvements       1,576,500
Building and Improvements       4,430,590
Gross Amount Carried at End of Period 6,007,090     6,007,090
Accumulated Depreciation 549,462     549,462
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,007,090      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 549,462      
Operating Properties [Member] | 1951 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,115,595
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,644,168
Land and Improvements       1,324,734
Building and Improvements       3,435,029
Gross Amount Carried at End of Period 4,759,763     4,759,763
Accumulated Depreciation 188,268     188,268
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,759,763      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 188,268      
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       6,586,494
Land and Improvements       2,853,273
Building and Improvements       6,136,041
Gross Amount Carried at End of Period 8,989,314     8,989,314
Accumulated Depreciation 291,107     291,107
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,989,314      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 291,107      
Operating Properties [Member] | 1955 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       758,503
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,120,096
Land and Improvements       2,453,348
Building and Improvements       7,425,251
Gross Amount Carried at End of Period 9,878,599     9,878,599
Accumulated Depreciation 71,932     71,932
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,878,599      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 71,932      
Operating Properties [Member] | 1957 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,844,943
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,950,175
Land and Improvements       3,091,046
Building and Improvements       6,704,072
Gross Amount Carried at End of Period 9,795,118     9,795,118
Accumulated Depreciation 411,361     411,361
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,795,118      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 411,361      
Operating Properties [Member] | 3169 Dodd Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       988,594
Initial Cost of Buildings       6,586,907
Costs Capitalized Subsequent to Acquisition       225,918
Land and Improvements       988,594
Building and Improvements       6,812,825
Gross Amount Carried at End of Period 7,801,419     7,801,419
Accumulated Depreciation 1,184,526     1,184,526
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,801,419      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,184,526      
Operating Properties [Member] | 3711 Kennebec Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       999,702
Initial Cost of Buildings       4,042,589
Costs Capitalized Subsequent to Acquisition       (934)
Land and Improvements       999,702
Building and Improvements       4,041,655
Gross Amount Carried at End of Period 5,041,357     5,041,357
Accumulated Depreciation 866,480     866,480
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,041,357      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 866,480      
Operating Properties [Member] | 917 Lone Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,493,115
Initial Cost of Buildings       6,120,455
Costs Capitalized Subsequent to Acquisition       986,900
Land and Improvements       1,493,115
Building and Improvements       7,107,355
Gross Amount Carried at End of Period 8,600,470     8,600,470
Accumulated Depreciation 1,453,058     1,453,058
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,600,470      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,453,058      
Operating Properties [Member] | 10301-10305 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       120,622
Initial Cost of Buildings       1,085,226
Costs Capitalized Subsequent to Acquisition       297,669
Land and Improvements       105,657
Building and Improvements       1,397,860
Gross Amount Carried at End of Period 1,503,517     1,503,517
Accumulated Depreciation 756,571     756,571
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,503,517      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 756,571      
Operating Properties [Member] | 10321 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       145,198
Initial Cost of Buildings       1,305,700
Costs Capitalized Subsequent to Acquisition       601,349
Land and Improvements       127,181
Building and Improvements       1,925,066
Gross Amount Carried at End of Period 2,052,247     2,052,247
Accumulated Depreciation 1,047,920     1,047,920
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,052,247      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,047,920      
Operating Properties [Member] | 10333 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       110,746
Initial Cost of Buildings       995,868
Costs Capitalized Subsequent to Acquisition       330,889
Land and Improvements       97,003
Building and Improvements       1,340,500
Gross Amount Carried at End of Period 1,437,503     1,437,503
Accumulated Depreciation 702,253     702,253
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,437,503      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 702,253      
Operating Properties [Member] | 10349-10357 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       275,903
Initial Cost of Buildings       2,481,666
Costs Capitalized Subsequent to Acquisition       945,812
Land and Improvements       241,667
Building and Improvements       3,461,714
Gross Amount Carried at End of Period 3,703,381     3,703,381
Accumulated Depreciation 1,957,160     1,957,160
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,703,381      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,957,160      
Operating Properties [Member] | 10365-10375 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       291,077
Initial Cost of Buildings       2,618,194
Costs Capitalized Subsequent to Acquisition       1,575,676
Land and Improvements       255,683
Building and Improvements       4,229,264
Gross Amount Carried at End of Period 4,484,947     4,484,947
Accumulated Depreciation 2,057,137     2,057,137
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,484,947      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,057,137      
Operating Properties [Member] | 10393-10394 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       269,618
Initial Cost of Buildings       2,423,318
Costs Capitalized Subsequent to Acquisition       2,574,661
Land and Improvements       236,903
Building and Improvements       5,030,694
Gross Amount Carried at End of Period 5,267,597     5,267,597
Accumulated Depreciation 2,510,427     2,510,427
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,267,597      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,510,427      
Operating Properties [Member] | 7075 Flying Cloud Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,232,831
Initial Cost of Buildings       10,855,851
Costs Capitalized Subsequent to Acquisition       4,182,406
Land and Improvements       10,093,396
Building and Improvements       15,177,691
Gross Amount Carried at End of Period 25,271,087     25,271,087
Accumulated Depreciation 4,202,224     4,202,224
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 25,271,087      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,202,224      
Operating Properties [Member] | 7078 Shady Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       343,093
Initial Cost of Buildings       3,085,795
Costs Capitalized Subsequent to Acquisition       1,624,490
Land and Improvements       336,481
Building and Improvements       4,716,897
Gross Amount Carried at End of Period 5,053,378     5,053,378
Accumulated Depreciation 2,838,868     2,838,868
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,053,378      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,838,868      
Operating Properties [Member] | 1075 King George Post Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       0
Land and Improvements       0
Building and Improvements       14,468,904
Gross Amount Carried at End of Period 14,468,904     14,468,904
Accumulated Depreciation 319,235     319,235
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,468,904      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 319,235      
Operating Properties [Member] | 1 Truman Drive South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       27,862,573
Initial Cost of Buildings       19,426,947
Costs Capitalized Subsequent to Acquisition       1,000,379
Land and Improvements       27,909,534
Building and Improvements       20,380,365
Gross Amount Carried at End of Period 48,289,899     48,289,899
Accumulated Depreciation 655,915     655,915
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 48,289,899      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 655,915      
Operating Properties [Member] | 2250 Arthur Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,403,196
Initial Cost of Buildings       2,386,396
Costs Capitalized Subsequent to Acquisition       149,086
Land and Improvements       1,403,196
Building and Improvements       2,535,482
Gross Amount Carried at End of Period 3,938,678     3,938,678
Accumulated Depreciation 477,737     477,737
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,938,678      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 477,737      
Operating Properties [Member] | 6600 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,680,220
Initial Cost of Buildings       14,671,910
Costs Capitalized Subsequent to Acquisition       701,811
Land and Improvements       3,680,220
Building and Improvements       15,373,721
Gross Amount Carried at End of Period 19,053,941     19,053,941
Accumulated Depreciation 2,426,083     2,426,083
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 19,053,941      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,426,083      
Operating Properties [Member] | 6675 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,421,854
Initial Cost of Buildings       9,730,192
Costs Capitalized Subsequent to Acquisition       1,062,508
Land and Improvements       2,421,854
Building and Improvements       10,792,700
Gross Amount Carried at End of Period 13,214,554     13,214,554
Accumulated Depreciation 1,723,311     1,723,311
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,214,554      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,723,311      
Operating Properties [Member] | 7351 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,897,044
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,438,573
Land and Improvements       3,023,417
Building and Improvements       6,312,200
Gross Amount Carried at End of Period 9,335,617     9,335,617
Accumulated Depreciation 2,162,388     2,162,388
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,335,617      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,162,388      
Operating Properties [Member] | 21705-21707 Mississippi Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,594,259
Initial Cost of Buildings       30,329,802
Costs Capitalized Subsequent to Acquisition       1,560,421
Land and Improvements       10,594,259
Building and Improvements       31,890,224
Gross Amount Carried at End of Period 42,484,483     42,484,483
Accumulated Depreciation 6,130,681     6,130,681
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 42,484,483      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 6,130,681      
Operating Properties [Member] | 27143 Elwood International Port Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,022,000
Initial Cost of Buildings       5,612,934
Costs Capitalized Subsequent to Acquisition       587,424
Land and Improvements       6,022,000
Building and Improvements       6,200,358
Gross Amount Carried at End of Period 12,222,358     12,222,358
Accumulated Depreciation 1,261,705     1,261,705
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,222,358      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,261,705      
Operating Properties [Member] | 1800 Donaldson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       13,211,604
Costs Capitalized Subsequent to Acquisition       925,430
Land and Improvements       0
Building and Improvements       14,137,034
Gross Amount Carried at End of Period 14,137,034     14,137,034
Accumulated Depreciation 4,921,421     4,921,421
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,137,034      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,921,421      
Operating Properties [Member] | 6880 Fairfield Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       412,136
Initial Cost of Buildings       3,029,177
Costs Capitalized Subsequent to Acquisition       146,362
Land and Improvements       412,136
Building and Improvements       3,175,539
Gross Amount Carried at End of Period 3,587,675     3,587,675
Accumulated Depreciation 556,807     556,807
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,587,675      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 556,807      
Operating Properties [Member] | 7000-7018 Fairfield Business [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       367,925
Initial Cost of Buildings       2,205,817
Costs Capitalized Subsequent to Acquisition       177,642
Land and Improvements       386,928
Building and Improvements       2,364,456
Gross Amount Carried at End of Period 2,751,384     2,751,384
Accumulated Depreciation 404,637     404,637
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,751,384      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 404,637      
Operating Properties [Member] | 10721 Jasmine Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,427,061
Initial Cost of Buildings       23,784,779
Costs Capitalized Subsequent to Acquisition       3,332,270
Land and Improvements       11,427,061
Building and Improvements       27,117,049
Gross Amount Carried at End of Period 38,544,110     38,544,110
Accumulated Depreciation 2,642,439     2,642,439
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 38,544,110      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,642,439      
Operating Properties [Member] | 2000 Southpointe Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       756,221
Initial Cost of Buildings       9,115,626
Costs Capitalized Subsequent to Acquisition       619,869
Land and Improvements       756,221
Building and Improvements       9,735,495
Gross Amount Carried at End of Period 10,491,716     10,491,716
Accumulated Depreciation 1,726,418     1,726,418
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,491,716      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,726,418      
Operating Properties [Member] | 1400 NW 65th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       545,480
Initial Cost of Buildings       2,540,210
Costs Capitalized Subsequent to Acquisition       85,911
Land and Improvements       545,480
Building and Improvements       2,626,121
Gross Amount Carried at End of Period 3,171,601     3,171,601
Accumulated Depreciation 417,925     417,925
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,171,601      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 417,925      
Operating Properties [Member] | 6500 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       3,064,734
Costs Capitalized Subsequent to Acquisition       477,057
Land and Improvements       0
Building and Improvements       3,541,791
Gross Amount Carried at End of Period 3,541,791     3,541,791
Accumulated Depreciation 694,531     694,531
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,541,791      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 694,531      
Operating Properties [Member] | 6501 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       519,984
Initial Cost of Buildings       2,677,465
Costs Capitalized Subsequent to Acquisition       312,769
Land and Improvements       519,984
Building and Improvements       2,990,234
Gross Amount Carried at End of Period 3,510,218     3,510,218
Accumulated Depreciation 461,790     461,790
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,510,218      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 461,790      
Operating Properties [Member] | 6600 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       2,988,181
Costs Capitalized Subsequent to Acquisition       377,561
Land and Improvements       0
Building and Improvements       3,365,742
Gross Amount Carried at End of Period 3,365,742     3,365,742
Accumulated Depreciation 629,720     629,720
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,365,742      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 629,720      
Operating Properties [Member] | 11222 Melrose Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,999,106
Initial Cost of Buildings       4,658,605
Costs Capitalized Subsequent to Acquisition       103,693
Land and Improvements       2,999,106
Building and Improvements       4,762,298
Gross Amount Carried at End of Period 7,761,404     7,761,404
Accumulated Depreciation 458,865     458,865
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,761,404      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 458,865      
Operating Properties [Member] | 9601 Cosner Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       475,262
Initial Cost of Buildings       3,917,234
Costs Capitalized Subsequent to Acquisition       387,586
Land and Improvements       475,262
Building and Improvements       4,304,820
Gross Amount Carried at End of Period 4,780,082     4,780,082
Accumulated Depreciation 2,536,776     2,536,776
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,780,082      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,536,776      
Operating Properties [Member] | 5410 - 5430 Northwest 33rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       603,776
Initial Cost of Buildings       4,176,238
Costs Capitalized Subsequent to Acquisition       2,081,367
Land and Improvements       625,111
Building and Improvements       6,236,270
Gross Amount Carried at End of Period 6,861,381     6,861,381
Accumulated Depreciation 3,556,017     3,556,017
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,861,381      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,556,017      
Operating Properties [Member] | 12601 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,048,143
Initial Cost of Buildings       1,088,697
Costs Capitalized Subsequent to Acquisition       70,518
Land and Improvements       2,048,143
Building and Improvements       1,159,215
Gross Amount Carried at End of Period 3,207,358     3,207,358
Accumulated Depreciation 326,128     326,128
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,207,358      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 326,128      
Operating Properties [Member] | 12641 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,766,822
Initial Cost of Buildings       2,539,214
Costs Capitalized Subsequent to Acquisition       132,812
Land and Improvements       3,766,822
Building and Improvements       2,672,026
Gross Amount Carried at End of Period 6,438,848     6,438,848
Accumulated Depreciation 496,032     496,032
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,438,848      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 496,032      
Operating Properties [Member] | 12681-12691 Pala Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,221,102
Initial Cost of Buildings       3,225,596
Costs Capitalized Subsequent to Acquisition       91,960
Land and Improvements       5,220,148
Building and Improvements       3,318,510
Gross Amount Carried at End of Period 8,538,658     8,538,658
Accumulated Depreciation 458,102     458,102
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,538,658      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 458,102      
Operating Properties [Member] | 1720 West 135th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,423,389
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       13,111,573
Land and Improvements       7,427,353
Building and Improvements       13,107,609
Gross Amount Carried at End of Period 20,534,962     20,534,962
Accumulated Depreciation 315,243     315,243
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,534,962      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 315,243      
Operating Properties [Member] | 850 S Jupiter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       799,707
Initial Cost of Buildings       6,122,065
Costs Capitalized Subsequent to Acquisition       525,135
Land and Improvements       799,707
Building and Improvements       6,647,200
Gross Amount Carried at End of Period 7,446,907     7,446,907
Accumulated Depreciation 1,228,448     1,228,448
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,446,907      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,228,448      
Operating Properties [Member] | 2510 W Main Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,785,741
Initial Cost of Buildings       11,158,818
Costs Capitalized Subsequent to Acquisition       2,350,115
Land and Improvements       1,785,741
Building and Improvements       13,508,933
Gross Amount Carried at End of Period 15,294,674     15,294,674
Accumulated Depreciation 2,629,047     2,629,047
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,294,674      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,629,047      
Operating Properties [Member] | 4251 North Highway 121 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,165,780
Initial Cost of Buildings       7,799,270
Costs Capitalized Subsequent to Acquisition       422,213
Land and Improvements       1,165,780
Building and Improvements       8,221,482
Gross Amount Carried at End of Period 9,387,262     9,387,262
Accumulated Depreciation 1,615,287     1,615,287
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,387,262      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,615,287      
Operating Properties [Member] | 1150 Pleasant Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,547,811
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       14,343,114
Land and Improvements       3,712,683
Building and Improvements       12,178,242
Gross Amount Carried at End of Period 15,890,925     15,890,925
Accumulated Depreciation 3,249,276     3,249,276
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,890,925      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,249,276      
Operating Properties [Member] | 25 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       288,823
Initial Cost of Buildings       3,441,512
Costs Capitalized Subsequent to Acquisition       174,541
Land and Improvements       288,823
Building and Improvements       3,616,053
Gross Amount Carried at End of Period 3,904,876     3,904,876
Accumulated Depreciation 492,665     492,665
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,904,876      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 492,665      
Operating Properties [Member] | 45 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       818,114
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,789,031
Land and Improvements       825,529
Building and Improvements       4,781,616
Gross Amount Carried at End of Period 5,607,145     5,607,145
Accumulated Depreciation 1,415,767     1,415,767
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,607,145      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,415,767      
Operating Properties [Member] | 2011 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       223,702
Initial Cost of Buildings       3,574,142
Costs Capitalized Subsequent to Acquisition       397,081
Land and Improvements       223,702
Building and Improvements       3,971,223
Gross Amount Carried at End of Period 4,194,925     4,194,925
Accumulated Depreciation 816,565     816,565
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,194,925      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 816,565      
Operating Properties [Member] | 2121 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       272,823
Initial Cost of Buildings       3,606,920
Costs Capitalized Subsequent to Acquisition       439,628
Land and Improvements       272,823
Building and Improvements       4,046,549
Gross Amount Carried at End of Period 4,319,372     4,319,372
Accumulated Depreciation 1,042,735     1,042,735
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,319,372      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,042,735      
Operating Properties [Member] | 800 Commerce Parkway West Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,374,664
Initial Cost of Buildings       29,963,830
Costs Capitalized Subsequent to Acquisition       1,822,379
Land and Improvements       1,374,664
Building and Improvements       31,786,209
Gross Amount Carried at End of Period 33,160,873     33,160,873
Accumulated Depreciation 5,435,338     5,435,338
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 33,160,873      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,435,338      
Operating Properties [Member] | 110 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       555,549
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,559,671
Land and Improvements       1,241,531
Building and Improvements       5,873,689
Gross Amount Carried at End of Period 7,115,220     7,115,220
Accumulated Depreciation 617,188     617,188
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,115,220      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 617,188      
Operating Properties [Member] | 120 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,243,100
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,603,075
Land and Improvements       1,255,751
Building and Improvements       6,590,424
Gross Amount Carried at End of Period 7,846,175     7,846,175
Accumulated Depreciation 775,442     775,442
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,846,175      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 775,442      
Operating Properties [Member] | 130 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,171,160
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,045,014
Land and Improvements       1,183,811
Building and Improvements       6,032,363
Gross Amount Carried at End of Period 7,216,174     7,216,174
Accumulated Depreciation 516,768     516,768
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,216,174      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 516,768      
Operating Properties [Member] | 140 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,243,100
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,460,294
Land and Improvements       1,255,751
Building and Improvements       6,447,643
Gross Amount Carried at End of Period 7,703,394     7,703,394
Accumulated Depreciation 794,243     794,243
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,703,394      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 794,243      
Operating Properties [Member] | 2988 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,271,948
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,597,878
Land and Improvements       2,095,033
Building and Improvements       6,774,793
Gross Amount Carried at End of Period 8,869,826     8,869,826
Accumulated Depreciation 230,529     230,529
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,869,826      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 230,529      
Operating Properties [Member] | 125 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       464,237
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,839,813
Land and Improvements       1,311,956
Building and Improvements       4,992,094
Gross Amount Carried at End of Period 6,304,050     6,304,050
Accumulated Depreciation 1,273,039     1,273,039
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,304,050      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,273,039      
Operating Properties [Member] | 2727 London Groveport Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,875,607
Initial Cost of Buildings       11,937,935
Costs Capitalized Subsequent to Acquisition       3,165,643
Land and Improvements       1,875,607
Building and Improvements       15,103,578
Gross Amount Carried at End of Period 16,979,185     16,979,185
Accumulated Depreciation 2,654,726     2,654,726
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,979,185      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,654,726      
Operating Properties [Member] | 11835 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       14,121,622
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       23,034,177
Land and Improvements       14,121,622
Building and Improvements       23,034,177
Gross Amount Carried at End of Period 37,155,799     37,155,799
Accumulated Depreciation 2,843,048     2,843,048
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 37,155,799      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,843,048      
Operating Properties [Member] | 11841 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,356,207
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       30,724,476
Land and Improvements       9,741,685
Building and Improvements       24,338,998
Gross Amount Carried at End of Period 34,080,683     34,080,683
Accumulated Depreciation 7,316,216     7,316,216
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 34,080,683      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,316,216      
Operating Properties [Member] | 1560 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,639,734
Initial Cost of Buildings       12,310,741
Costs Capitalized Subsequent to Acquisition       1,073,860
Land and Improvements       2,639,734
Building and Improvements       13,384,601
Gross Amount Carried at End of Period 16,024,335     16,024,335
Accumulated Depreciation 2,332,845     2,332,845
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,024,335      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,332,845      
Operating Properties [Member] | 1575 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,293,284
Initial Cost of Buildings       17,235,926
Costs Capitalized Subsequent to Acquisition       1,200,560
Land and Improvements       3,293,284
Building and Improvements       18,436,486
Gross Amount Carried at End of Period 21,729,770     21,729,770
Accumulated Depreciation 3,102,059     3,102,059
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,729,770      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,102,059      
Operating Properties [Member] | 7361 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,245,187
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,667,649
Land and Improvements       3,822,710
Building and Improvements       8,090,126
Gross Amount Carried at End of Period 11,912,836     11,912,836
Accumulated Depreciation 1,974,018     1,974,018
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,912,836      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,974,018      
Operating Properties [Member] | 7460 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,785,446
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,144,397
Land and Improvements       3,796,023
Building and Improvements       8,133,820
Gross Amount Carried at End of Period 11,929,843     11,929,843
Accumulated Depreciation 868,037     868,037
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,929,843      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 868,037      
Operating Properties [Member] | 7462 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,059,337
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,490,949
Land and Improvements       4,070,629
Building and Improvements       7,479,657
Gross Amount Carried at End of Period 11,550,286     11,550,286
Accumulated Depreciation 699,111     699,111
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,550,286      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 699,111      
Operating Properties [Member] | 500 McCarthy Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,194,872
Initial Cost of Buildings       19,991,436
Costs Capitalized Subsequent to Acquisition       5,018,136
Land and Improvements       5,687,013
Building and Improvements       24,517,431
Gross Amount Carried at End of Period 30,204,444     30,204,444
Accumulated Depreciation 9,708,214     9,708,214
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 30,204,444      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 9,708,214      
Operating Properties [Member] | 600 Industrial Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,743,800
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       28,146,140
Land and Improvements       9,368,557
Building and Improvements       26,521,383
Gross Amount Carried at End of Period 35,889,940     35,889,940
Accumulated Depreciation 8,493,295     8,493,295
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 35,889,940      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,493,295      
Operating Properties [Member] | 7195 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       464,534
Initial Cost of Buildings       6,066,272
Costs Capitalized Subsequent to Acquisition       237,152
Land and Improvements       464,534
Building and Improvements       6,303,424
Gross Amount Carried at End of Period 6,767,958     6,767,958
Accumulated Depreciation 998,330     998,330
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,767,958      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 998,330      
Operating Properties [Member] | 7253 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       954,130
Initial Cost of Buildings       10,585,367
Costs Capitalized Subsequent to Acquisition       544,460
Land and Improvements       954,130
Building and Improvements       11,129,827
Gross Amount Carried at End of Period 12,083,957     12,083,957
Accumulated Depreciation 1,792,344     1,792,344
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,083,957      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,792,344      
Operating Properties [Member] | 12537 Cerise Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,203,194
Initial Cost of Buildings       5,758,809
Costs Capitalized Subsequent to Acquisition       1,481,588
Land and Improvements       2,203,194
Building and Improvements       7,240,397
Gross Amount Carried at End of Period 9,443,591     9,443,591
Accumulated Depreciation 973,565     973,565
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,443,591      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 973,565      
Operating Properties [Member] | 1010 Petersburg Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       305,471
Initial Cost of Buildings       5,434,505
Costs Capitalized Subsequent to Acquisition       (819,916)
Land and Improvements       305,471
Building and Improvements       4,614,589
Gross Amount Carried at End of Period 4,920,060     4,920,060
Accumulated Depreciation 817,398     817,398
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,920,060      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 817,398      
Operating Properties [Member] | 785 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       401,410
Initial Cost of Buildings       3,087,899
Costs Capitalized Subsequent to Acquisition       437,960
Land and Improvements       401,410
Building and Improvements       3,525,859
Gross Amount Carried at End of Period 3,927,269     3,927,269
Accumulated Depreciation 705,925     705,925
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,927,269      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 705,925      
Operating Properties [Member] | 805 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       292,096
Initial Cost of Buildings       2,502,486
Costs Capitalized Subsequent to Acquisition       163,618
Land and Improvements       292,096
Building and Improvements       2,666,103
Gross Amount Carried at End of Period 2,958,199     2,958,199
Accumulated Depreciation 547,438     547,438
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,958,199      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 547,438      
Operating Properties [Member] | 825 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       370,149
Initial Cost of Buildings       3,095,116
Costs Capitalized Subsequent to Acquisition       442,314
Land and Improvements       370,149
Building and Improvements       3,537,431
Gross Amount Carried at End of Period 3,907,580     3,907,580
Accumulated Depreciation 721,514     721,514
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,907,580      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 721,514      
Operating Properties [Member] | 845 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       444,318
Initial Cost of Buildings       3,811,889
Costs Capitalized Subsequent to Acquisition       399,366
Land and Improvements       444,318
Building and Improvements       4,211,255
Gross Amount Carried at End of Period 4,655,573     4,655,573
Accumulated Depreciation 814,352     814,352
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,655,573      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 814,352      
Operating Properties [Member] | 4198 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       94,274
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,288,127
Land and Improvements       791,880
Building and Improvements       5,590,521
Gross Amount Carried at End of Period 6,382,401     6,382,401
Accumulated Depreciation 1,783,401     1,783,401
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,382,401      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,783,401      
Operating Properties [Member] | 4183 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       122,203
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,214,675
Land and Improvements       526,266
Building and Improvements       2,810,612
Gross Amount Carried at End of Period 3,336,878     3,336,878
Accumulated Depreciation 1,406,053     1,406,053
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,336,878      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,406,053      
Operating Properties [Member] | 4189 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       100,106
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,582,494
Land and Improvements       431,106
Building and Improvements       3,251,494
Gross Amount Carried at End of Period 3,682,600     3,682,600
Accumulated Depreciation 1,568,325     1,568,325
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,682,600      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,568,325      
Operating Properties [Member] | 4193 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       107,586
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,522,376
Land and Improvements       505,700
Building and Improvements       3,124,262
Gross Amount Carried at End of Period 3,629,962     3,629,962
Accumulated Depreciation 970,547     970,547
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,629,962      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 970,547      
Operating Properties [Member] | 4328, 4336 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       521,122
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,531,390
Land and Improvements       825,092
Building and Improvements       5,227,420
Gross Amount Carried at End of Period 6,052,512     6,052,512
Accumulated Depreciation 2,697,862     2,697,862
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,052,512      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,697,862      
Operating Properties [Member] | 4344 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       484,001
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,185,404
Land and Improvements       173,623
Building and Improvements       3,495,782
Gross Amount Carried at End of Period 3,669,405     3,669,405
Accumulated Depreciation 1,967,845     1,967,845
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,669,405      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,967,845      
Operating Properties [Member] | 4380 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       282,996
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,209,513
Land and Improvements       283,368
Building and Improvements       2,209,141
Gross Amount Carried at End of Period 2,492,509     2,492,509
Accumulated Depreciation 1,273,523     1,273,523
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,492,509      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,273,523      
Operating Properties [Member] | 4388 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       143,661
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,214,707
Land and Improvements       132,655
Building and Improvements       1,225,713
Gross Amount Carried at End of Period 1,358,368     1,358,368
Accumulated Depreciation 694,546     694,546
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,358,368      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 694,546      
Operating Properties [Member] | 4475 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       748,693
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,918,129
Land and Improvements       1,525,421
Building and Improvements       6,141,401
Gross Amount Carried at End of Period 7,666,822     7,666,822
Accumulated Depreciation 1,581,382     1,581,382
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,666,822      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,581,382      
Operating Properties [Member] | 4485 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,827,595
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,509,786
Land and Improvements       1,827,595
Building and Improvements       6,509,786
Gross Amount Carried at End of Period 8,337,381     8,337,381
Accumulated Depreciation 375,031     375,031
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,337,381      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 375,031      
Operating Properties [Member] | 4500 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       230,622
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,878,225
Land and Improvements       231,692
Building and Improvements       2,877,155
Gross Amount Carried at End of Period 3,108,847     3,108,847
Accumulated Depreciation 1,721,076     1,721,076
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,108,847      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,721,076      
Operating Properties [Member] | 4501 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       319,289
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,941,886
Land and Improvements       320,450
Building and Improvements       2,940,725
Gross Amount Carried at End of Period 3,261,175     3,261,175
Accumulated Depreciation 1,891,827     1,891,827
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,261,175      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,891,827      
Operating Properties [Member] | 4523 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       234,564
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,319,067
Land and Improvements       235,698
Building and Improvements       3,317,933
Gross Amount Carried at End of Period 3,553,631     3,553,631
Accumulated Depreciation 2,339,202     2,339,202
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,553,631      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,339,202      
Operating Properties [Member] | 4524 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       182,810
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,848,066
Land and Improvements       183,888
Building and Improvements       2,846,988
Gross Amount Carried at End of Period 3,030,876     3,030,876
Accumulated Depreciation 1,912,071     1,912,071
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,030,876      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,912,071      
Operating Properties [Member] | Unit 5 Logix Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances      
Initial Cost of Land       10,547,677
Initial Cost of Buildings       29,691,911
Costs Capitalized Subsequent to Acquisition       (9,562,316)
Land and Improvements       8,128,152
Building and Improvements       22,549,120
Gross Amount Carried at End of Period 30,677,272     30,677,272
Accumulated Depreciation 3,504,963     3,504,963
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 30,677,272      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,504,963      
Operating Properties [Member] | 1000 South Loop West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       509,351
Initial Cost of Buildings       3,549,504
Costs Capitalized Subsequent to Acquisition       994,350
Land and Improvements       509,351
Building and Improvements       4,543,854
Gross Amount Carried at End of Period 5,053,205     5,053,205
Accumulated Depreciation 993,896     993,896
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,053,205      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 993,896      
Operating Properties [Member] | 10241 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       558,491
Initial Cost of Buildings       5,740,552
Costs Capitalized Subsequent to Acquisition       138,801
Land and Improvements       558,491
Building and Improvements       5,879,353
Gross Amount Carried at End of Period 6,437,844     6,437,844
Accumulated Depreciation 924,356     924,356
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,437,844      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 924,356      
Operating Properties [Member] | 10245 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       426,927
Initial Cost of Buildings       3,460,513
Costs Capitalized Subsequent to Acquisition       525,045
Land and Improvements       426,927
Building and Improvements       3,985,558
Gross Amount Carried at End of Period 4,412,485     4,412,485
Accumulated Depreciation 934,656     934,656
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,412,485      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 934,656      
Operating Properties [Member] | 10301 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       545,501
Initial Cost of Buildings       2,927,700
Costs Capitalized Subsequent to Acquisition       1,418,126
Land and Improvements       545,501
Building and Improvements       4,345,825
Gross Amount Carried at End of Period 4,891,326     4,891,326
Accumulated Depreciation 723,469     723,469
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,891,326      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 723,469      
Operating Properties [Member] | 10305 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,340,609
Initial Cost of Buildings       7,489,720
Costs Capitalized Subsequent to Acquisition       3,263,257
Land and Improvements       1,340,609
Building and Improvements       10,752,976
Gross Amount Carried at End of Period 12,093,585     12,093,585
Accumulated Depreciation 2,762,324     2,762,324
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,093,585      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,762,324      
Operating Properties [Member] | 1050 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       973,482
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,531,502
Land and Improvements       992,093
Building and Improvements       3,512,891
Gross Amount Carried at End of Period 4,504,984     4,504,984
Accumulated Depreciation 375,462     375,462
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,504,984      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 375,462      
Operating Properties [Member] | 10607 Haddington Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       201,469
Initial Cost of Buildings       1,631,561
Costs Capitalized Subsequent to Acquisition       160,347
Land and Improvements       201,469
Building and Improvements       1,791,909
Gross Amount Carried at End of Period 1,993,378     1,993,378
Accumulated Depreciation 345,323     345,323
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,993,378      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 345,323      
Operating Properties [Member] | 10735 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,110,988
Initial Cost of Buildings       6,351,946
Costs Capitalized Subsequent to Acquisition       3,158,530
Land and Improvements       1,135,483
Building and Improvements       9,485,981
Gross Amount Carried at End of Period 10,621,464     10,621,464
Accumulated Depreciation 3,706,395     3,706,395
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,621,464      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,706,395      
Operating Properties [Member] | 10739 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       797,931
Initial Cost of Buildings       5,950,894
Costs Capitalized Subsequent to Acquisition       476,655
Land and Improvements       799,560
Building and Improvements       6,425,920
Gross Amount Carried at End of Period 7,225,480     7,225,480
Accumulated Depreciation 2,606,566     2,606,566
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,225,480      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,606,566      
Operating Properties [Member] | 11201 Greens Crossing Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,006,194
Initial Cost of Buildings       5,412,584
Costs Capitalized Subsequent to Acquisition       2,619,384
Land and Improvements       1,008,542
Building and Improvements       8,029,620
Gross Amount Carried at End of Period 9,038,162     9,038,162
Accumulated Depreciation 2,712,516     2,712,516
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,038,162      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,712,516      
Operating Properties [Member] | 11220 Ella Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,505,855
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,073,136
Land and Improvements       1,534,644
Building and Improvements       8,044,347
Gross Amount Carried at End of Period 9,578,991     9,578,991
Accumulated Depreciation 734,400     734,400
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,578,991      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 734,400      
Operating Properties [Member] | 1283 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       80,730
Initial Cost of Buildings       870,656
Costs Capitalized Subsequent to Acquisition       146,624
Land and Improvements       80,730
Building and Improvements       1,017,280
Gross Amount Carried at End of Period 1,098,010     1,098,010
Accumulated Depreciation 228,608     228,608
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,098,010      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 228,608      
Operating Properties [Member] | 1287 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       146,654
Initial Cost of Buildings       1,620,780
Costs Capitalized Subsequent to Acquisition       63,282
Land and Improvements       146,654
Building and Improvements       1,684,061
Gross Amount Carried at End of Period 1,830,715     1,830,715
Accumulated Depreciation 334,126     334,126
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,830,715      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 334,126      
Operating Properties [Member] | 1291 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       510,102
Initial Cost of Buildings       4,129,042
Costs Capitalized Subsequent to Acquisition       602,376
Land and Improvements       510,102
Building and Improvements       4,731,418
Gross Amount Carried at End of Period 5,241,520     5,241,520
Accumulated Depreciation 938,895     938,895
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,241,520      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 938,895      
Operating Properties [Member] | 1416 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       218,850
Initial Cost of Buildings       1,639,902
Costs Capitalized Subsequent to Acquisition       569,056
Land and Improvements       218,850
Building and Improvements       2,208,957
Gross Amount Carried at End of Period 2,427,807     2,427,807
Accumulated Depreciation 517,674     517,674
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,427,807      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 517,674      
Operating Properties [Member] | 1420 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       211,279
Initial Cost of Buildings       1,554,156
Costs Capitalized Subsequent to Acquisition       291,238
Land and Improvements       211,279
Building and Improvements       1,845,394
Gross Amount Carried at End of Period 2,056,673     2,056,673
Accumulated Depreciation 308,944     308,944
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,056,673      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 308,944      
Operating Properties [Member] | 14200 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,396,794
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,960,165
Land and Improvements       1,699,632
Building and Improvements       4,657,327
Gross Amount Carried at End of Period 6,356,959     6,356,959
Accumulated Depreciation 792,722     792,722
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,356,959      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 792,722      
Operating Properties [Member] | 1424 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       283,107
Initial Cost of Buildings       2,077,323
Costs Capitalized Subsequent to Acquisition       423,815
Land and Improvements       283,107
Building and Improvements       2,501,138
Gross Amount Carried at End of Period 2,784,245     2,784,245
Accumulated Depreciation 488,242     488,242
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,784,245      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 488,242      
Operating Properties [Member] | 1428 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       367,446
Initial Cost of Buildings       1,952,453
Costs Capitalized Subsequent to Acquisition       464,576
Land and Improvements       367,446
Building and Improvements       2,417,028
Gross Amount Carried at End of Period 2,784,474     2,784,474
Accumulated Depreciation 450,680     450,680
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,784,474      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 450,680      
Operating Properties [Member] | 14300 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,377,193
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,613,585
Land and Improvements       1,388,292
Building and Improvements       5,602,486
Gross Amount Carried at End of Period 6,990,778     6,990,778
Accumulated Depreciation 850,061     850,061
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,990,778      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 850,061      
Operating Properties [Member] | 14400 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,830,419
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,162,866
Land and Improvements       1,838,166
Building and Improvements       7,155,119
Gross Amount Carried at End of Period 8,993,285     8,993,285
Accumulated Depreciation 2,203,839     2,203,839
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,993,285      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,203,839      
Operating Properties [Member] | 15102 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       755,121
Initial Cost of Buildings       3,155,774
Costs Capitalized Subsequent to Acquisition       249,394
Land and Improvements       755,121
Building and Improvements       3,405,168
Gross Amount Carried at End of Period 4,160,289     4,160,289
Accumulated Depreciation 661,680     661,680
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,160,289      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 661,680      
Operating Properties [Member] | 15150 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       418,580
Initial Cost of Buildings       1,564,587
Costs Capitalized Subsequent to Acquisition       264,824
Land and Improvements       418,580
Building and Improvements       1,829,411
Gross Amount Carried at End of Period 2,247,991     2,247,991
Accumulated Depreciation 391,559     391,559
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,247,991      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 391,559      
Operating Properties [Member] | 16330 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,540,109
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,519,116
Land and Improvements       1,966,472
Building and Improvements       8,092,753
Gross Amount Carried at End of Period 10,059,225     10,059,225
Accumulated Depreciation 1,011,409     1,011,409
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,059,225      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,011,409      
Operating Properties [Member] | 16405 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       438,853
Initial Cost of Buildings       3,030,396
Costs Capitalized Subsequent to Acquisition       1,194,986
Land and Improvements       438,853
Building and Improvements       4,225,382
Gross Amount Carried at End of Period 4,664,235     4,664,235
Accumulated Depreciation 2,053,640     2,053,640
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,664,235      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,053,640      
Operating Properties [Member] | 16420 West Hardy Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       529,876
Initial Cost of Buildings       3,267,872
Costs Capitalized Subsequent to Acquisition       374,162
Land and Improvements       529,876
Building and Improvements       3,642,034
Gross Amount Carried at End of Period 4,171,910     4,171,910
Accumulated Depreciation 701,597     701,597
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,171,910      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 701,597      
Operating Properties [Member] | 16445 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       363,339
Initial Cost of Buildings       2,509,186
Costs Capitalized Subsequent to Acquisition       325,072
Land and Improvements       363,339
Building and Improvements       2,834,258
Gross Amount Carried at End of Period 3,197,597     3,197,597
Accumulated Depreciation 1,436,619     1,436,619
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,197,597      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,436,619      
Operating Properties [Member] | 1646 Rankin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       329,961
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,033,129
Land and Improvements       592,234
Building and Improvements       4,770,856
Gross Amount Carried at End of Period 5,363,090     5,363,090
Accumulated Depreciation 1,690,069     1,690,069
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,363,090      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,690,069      
Operating Properties [Member] | 1655 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       197,226
Initial Cost of Buildings       935,036
Costs Capitalized Subsequent to Acquisition       566,781
Land and Improvements       197,226
Building and Improvements       1,501,817
Gross Amount Carried at End of Period 1,699,043     1,699,043
Accumulated Depreciation 420,556     420,556
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,699,043      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 420,556      
Operating Properties [Member] | 16580 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       289,000
Initial Cost of Buildings       3,559,857
Costs Capitalized Subsequent to Acquisition       1,325,263
Land and Improvements       289,000
Building and Improvements       4,885,121
Gross Amount Carried at End of Period 5,174,121     5,174,121
Accumulated Depreciation 2,243,816     2,243,816
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,174,121      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,243,816      
Operating Properties [Member] | 16602 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       284,403
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,462,498
Land and Improvements       503,779
Building and Improvements       5,243,122
Gross Amount Carried at End of Period 5,746,901     5,746,901
Accumulated Depreciation 1,824,292     1,824,292
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,746,901      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,824,292      
Operating Properties [Member] | 16605 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       298,999
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,423,751
Land and Improvements       496,186
Building and Improvements       3,226,564
Gross Amount Carried at End of Period 3,722,750     3,722,750
Accumulated Depreciation 1,357,158     1,357,158
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,722,750      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,357,158      
Operating Properties [Member] | 1665 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       452,439
Initial Cost of Buildings       2,016,585
Costs Capitalized Subsequent to Acquisition       594,268
Land and Improvements       452,439
Building and Improvements       2,610,852
Gross Amount Carried at End of Period 3,063,291     3,063,291
Accumulated Depreciation 462,530     462,530
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,063,291      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 462,530      
Operating Properties [Member] | 16680 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       311,952
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,714,116
Land and Improvements       492,869
Building and Improvements       3,533,199
Gross Amount Carried at End of Period 4,026,068     4,026,068
Accumulated Depreciation 957,760     957,760
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,026,068      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 957,760      
Operating Properties [Member] | 16685 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       414,691
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,459,178
Land and Improvements       414,691
Building and Improvements       2,459,178
Gross Amount Carried at End of Period 2,873,869     2,873,869
Accumulated Depreciation 884,382     884,382
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,873,869      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 884,382      
Operating Properties [Member] | 1755 Trans Central Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       293,534
Initial Cost of Buildings       3,036,269
Costs Capitalized Subsequent to Acquisition       1,476,893
Land and Improvements       306,147
Building and Improvements       4,500,549
Gross Amount Carried at End of Period 4,806,696     4,806,696
Accumulated Depreciation 1,863,536     1,863,536
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,806,696      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,863,536      
Operating Properties [Member] | 4301 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       226,973
Initial Cost of Buildings       1,174,979
Costs Capitalized Subsequent to Acquisition       174,177
Land and Improvements       226,973
Building and Improvements       1,349,156
Gross Amount Carried at End of Period 1,576,129     1,576,129
Accumulated Depreciation 349,730     349,730
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,576,129      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 349,730      
Operating Properties [Member] | 4401 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       244,240
Initial Cost of Buildings       1,412,622
Costs Capitalized Subsequent to Acquisition       247,951
Land and Improvements       244,240
Building and Improvements       1,660,573
Gross Amount Carried at End of Period 1,904,813     1,904,813
Accumulated Depreciation 397,128     397,128
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,904,813      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 397,128      
Operating Properties [Member] | 4501 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       252,907
Initial Cost of Buildings       1,504,053
Costs Capitalized Subsequent to Acquisition       229,239
Land and Improvements       252,907
Building and Improvements       1,733,292
Gross Amount Carried at End of Period 1,986,199     1,986,199
Accumulated Depreciation 291,990     291,990
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,986,199      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 291,990      
Operating Properties [Member] | 5200 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,519,458
Initial Cost of Buildings       7,135,548
Costs Capitalized Subsequent to Acquisition       4,015,803
Land and Improvements       1,520,074
Building and Improvements       11,150,735
Gross Amount Carried at End of Period 12,670,809     12,670,809
Accumulated Depreciation 3,864,134     3,864,134
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,670,809      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,864,134      
Operating Properties [Member] | 5250 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,173,287
Initial Cost of Buildings       8,868,256
Costs Capitalized Subsequent to Acquisition       3,086,989
Land and Improvements       2,173,942
Building and Improvements       11,954,590
Gross Amount Carried at End of Period 14,128,532     14,128,532
Accumulated Depreciation 3,320,014     3,320,014
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,128,532      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,320,014      
Operating Properties [Member] | 5500 N. Sam Houston Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,243,541
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,540,529
Land and Improvements       1,513,152
Building and Improvements       6,270,918
Gross Amount Carried at End of Period 7,784,070     7,784,070
Accumulated Depreciation 1,549,152     1,549,152
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,784,070      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,549,152      
Operating Properties [Member] | 8017 Pinemont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       900,953
Initial Cost of Buildings       5,323,727
Costs Capitalized Subsequent to Acquisition       912,329
Land and Improvements       900,953
Building and Improvements       6,236,056
Gross Amount Carried at End of Period 7,137,009     7,137,009
Accumulated Depreciation 973,047     973,047
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,137,009      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 973,047      
Operating Properties [Member] | 8272 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       530,494
Initial Cost of Buildings       4,108,626
Costs Capitalized Subsequent to Acquisition       384,828
Land and Improvements       530,494
Building and Improvements       4,493,454
Gross Amount Carried at End of Period 5,023,948     5,023,948
Accumulated Depreciation 818,718     818,718
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,023,948      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 818,718      
Operating Properties [Member] | 8282 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       450,422
Initial Cost of Buildings       3,304,942
Costs Capitalized Subsequent to Acquisition       1,139,437
Land and Improvements       450,422
Building and Improvements       4,444,379
Gross Amount Carried at End of Period 4,894,801     4,894,801
Accumulated Depreciation 963,774     963,774
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,894,801      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 963,774      
Operating Properties [Member] | 8301 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,515,862
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       26,997,764
Land and Improvements       7,083,514
Building and Improvements       24,430,112
Gross Amount Carried at End of Period 31,513,626     31,513,626
Accumulated Depreciation 6,949,197     6,949,197
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 31,513,626      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 6,949,197      
Operating Properties [Member] | 8303 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,613,370
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       15,863,256
Land and Improvements       4,310,317
Building and Improvements       16,166,309
Gross Amount Carried at End of Period 20,476,626     20,476,626
Accumulated Depreciation 1,441,378     1,441,378
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,476,626      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,441,378      
Operating Properties [Member] | 850 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,893,405
Initial Cost of Buildings       11,593,197
Costs Capitalized Subsequent to Acquisition       2,996,106
Land and Improvements       2,899,861
Building and Improvements       14,582,846
Gross Amount Carried at End of Period 17,482,707     17,482,707
Accumulated Depreciation 4,188,653     4,188,653
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 17,482,707      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,188,653      
Operating Properties [Member] | 860 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,399,365
Initial Cost of Buildings       6,344,650
Costs Capitalized Subsequent to Acquisition       1,542,047
Land and Improvements       1,374,012
Building and Improvements       7,912,050
Gross Amount Carried at End of Period 9,286,062     9,286,062
Accumulated Depreciation 2,149,728     2,149,728
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,286,062      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,149,728      
Operating Properties [Member] | 8801-19 & 8821-49 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,290,001
Initial Cost of Buildings       15,297,141
Costs Capitalized Subsequent to Acquisition       4,618,108
Land and Improvements       2,290,002
Building and Improvements       19,915,248
Gross Amount Carried at End of Period 22,205,250     22,205,250
Accumulated Depreciation 7,285,061     7,285,061
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,205,250      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,285,061      
Operating Properties [Member] | 8802-8824 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,774,995
Initial Cost of Buildings       6,364,767
Costs Capitalized Subsequent to Acquisition       2,074,557
Land and Improvements       2,775,021
Building and Improvements       8,439,297
Gross Amount Carried at End of Period 11,214,318     11,214,318
Accumulated Depreciation 2,926,974     2,926,974
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,214,318      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,926,974      
Operating Properties [Member] | 8825-8839 N Sam Houston Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       638,453
Initial Cost of Buildings       3,258,815
Costs Capitalized Subsequent to Acquisition       816,626
Land and Improvements       638,477
Building and Improvements       4,075,416
Gross Amount Carried at End of Period 4,713,893     4,713,893
Accumulated Depreciation 1,591,430     1,591,430
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,713,893      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,591,430      
Operating Properties [Member] | 8850-8872 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       504,317
Initial Cost of Buildings       2,878,351
Costs Capitalized Subsequent to Acquisition       1,932,869
Land and Improvements       504,341
Building and Improvements       4,811,196
Gross Amount Carried at End of Period 5,315,537     5,315,537
Accumulated Depreciation 1,938,527     1,938,527
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,315,537      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,938,527      
Operating Properties [Member] | 16200 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,748,348
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,341,500
Land and Improvements       2,120,319
Building and Improvements       8,969,529
Gross Amount Carried at End of Period 11,089,848     11,089,848
Accumulated Depreciation 1,677,897     1,677,897
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,089,848      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,677,897      
Operating Properties [Member] | 5430 FAA Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,245,346
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,718,442
Land and Improvements       3,198,031
Building and Improvements       10,765,757
Gross Amount Carried at End of Period 13,963,788     13,963,788
Accumulated Depreciation 406,660     406,660
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,963,788      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 406,660      
Operating Properties [Member] | 951 Valleyview Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,899,824
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       14,197,000
Land and Improvements       5,554,903
Building and Improvements       12,541,921
Gross Amount Carried at End of Period 18,096,824     18,096,824
Accumulated Depreciation 539,219     539,219
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 18,096,824      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 539,219      
Operating Properties [Member] | Cabot III UK1B01 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,888,058
Initial Cost of Buildings       35,003,668
Costs Capitalized Subsequent to Acquisition       (10,913,850)
Land and Improvements       9,161,064
Building and Improvements       26,816,812
Gross Amount Carried at End of Period 35,977,876     35,977,876
Accumulated Depreciation 3,996,861     3,996,861
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 35,977,876      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,996,861      
Operating Properties [Member] | 1011 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       842,043
Initial Cost of Buildings       984,087
Costs Capitalized Subsequent to Acquisition       205,986
Land and Improvements       842,043
Building and Improvements       1,190,073
Gross Amount Carried at End of Period 2,032,116     2,032,116
Accumulated Depreciation 240,394     240,394
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,032,116      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 240,394      
Operating Properties [Member] | 1035 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       875,172
Initial Cost of Buildings       2,071,051
Costs Capitalized Subsequent to Acquisition       124,976
Land and Improvements       875,172
Building and Improvements       2,196,028
Gross Amount Carried at End of Period 3,071,200     3,071,200
Accumulated Depreciation 369,876     369,876
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,071,200      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 369,876      
Operating Properties [Member] | 1549 W Glenlake Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,339,627
Initial Cost of Buildings       3,763,288
Costs Capitalized Subsequent to Acquisition       203,472
Land and Improvements       1,339,627
Building and Improvements       3,966,759
Gross Amount Carried at End of Period 5,306,386     5,306,386
Accumulated Depreciation 673,782     673,782
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,306,386      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 673,782      
Operating Properties [Member] | 901 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       866,378
Initial Cost of Buildings       2,112,616
Costs Capitalized Subsequent to Acquisition       47,808
Land and Improvements       866,378
Building and Improvements       2,160,424
Gross Amount Carried at End of Period 3,026,802     3,026,802
Accumulated Depreciation 331,220     331,220
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,026,802      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 331,220      
Operating Properties [Member] | 925 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       945,251
Initial Cost of Buildings       2,010,181
Costs Capitalized Subsequent to Acquisition       177,500
Land and Improvements       945,251
Building and Improvements       2,187,681
Gross Amount Carried at End of Period 3,132,932     3,132,932
Accumulated Depreciation 308,760     308,760
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,132,932      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 308,760      
Operating Properties [Member] | 8241 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,246,618
Initial Cost of Buildings       6,844,393
Costs Capitalized Subsequent to Acquisition       1,445,551
Land and Improvements       1,246,618
Building and Improvements       8,289,943
Gross Amount Carried at End of Period 9,536,561     9,536,561
Accumulated Depreciation 1,324,901     1,324,901
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,536,561      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,324,901      
Operating Properties [Member] | 8242 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,488,746
Initial Cost of Buildings       9,072,440
Costs Capitalized Subsequent to Acquisition       1,536,444
Land and Improvements       1,488,746
Building and Improvements       10,608,884
Gross Amount Carried at End of Period 12,097,630     12,097,630
Accumulated Depreciation 1,928,648     1,928,648
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,097,630      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,928,648      
Operating Properties [Member] | 8246 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       590,922
Initial Cost of Buildings       3,374,522
Costs Capitalized Subsequent to Acquisition       478,590
Land and Improvements       590,922
Building and Improvements       3,853,112
Gross Amount Carried at End of Period 4,444,034     4,444,034
Accumulated Depreciation 575,919     575,919
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,444,034      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 575,919      
Operating Properties [Member] | 19 Crows Mill Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       41,975,226
Land and Improvements       25,067,669
Building and Improvements       16,907,557
Gross Amount Carried at End of Period 41,975,226     41,975,226
Accumulated Depreciation 125,138     125,138
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 41,975,226      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 125,138      
Operating Properties [Member] | 1305 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       808,159
Initial Cost of Buildings       5,712,959
Costs Capitalized Subsequent to Acquisition       1,127,506
Land and Improvements       808,159
Building and Improvements       6,840,465
Gross Amount Carried at End of Period 7,648,624     7,648,624
Accumulated Depreciation 1,443,791     1,443,791
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,648,624      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,443,791      
Operating Properties [Member] | 1325 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,612,924
Initial Cost of Buildings       9,771,680
Costs Capitalized Subsequent to Acquisition       1,628,006
Land and Improvements       1,612,924
Building and Improvements       11,399,686
Gross Amount Carried at End of Period 13,012,610     13,012,610
Accumulated Depreciation 2,615,845     2,615,845
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,012,610      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,615,845      
Operating Properties [Member] | 3600 Cobb International Bld NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       716,860
Initial Cost of Buildings       6,962,212
Costs Capitalized Subsequent to Acquisition       661,332
Land and Improvements       716,860
Building and Improvements       7,623,545
Gross Amount Carried at End of Period 8,340,405     8,340,405
Accumulated Depreciation 1,438,570     1,438,570
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,340,405      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,438,570      
Operating Properties [Member] | Unit 1 Bear Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances      
Initial Cost of Land       10,849,890
Initial Cost of Buildings       36,219,855
Costs Capitalized Subsequent to Acquisition       (11,021,038)
Land and Improvements       8,361,041
Building and Improvements       27,687,666
Gross Amount Carried at End of Period 36,048,707     36,048,707
Accumulated Depreciation 4,172,348     4,172,348
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 36,048,707      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,172,348      
Operating Properties [Member] | 650 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       464,382
Initial Cost of Buildings       6,722,830
Costs Capitalized Subsequent to Acquisition       16,054,002
Land and Improvements       830,779
Building and Improvements       22,410,435
Gross Amount Carried at End of Period 23,241,214     23,241,214
Accumulated Depreciation 4,237,198     4,237,198
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 23,241,214      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,237,198      
Operating Properties [Member] | 680 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       952,361
Initial Cost of Buildings       6,722,830
Costs Capitalized Subsequent to Acquisition       7,217,277
Land and Improvements       952,361
Building and Improvements       13,940,107
Gross Amount Carried at End of Period 14,892,468     14,892,468
Accumulated Depreciation 8,178,680     8,178,680
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,892,468      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,178,680      
Operating Properties [Member] | 1770 Interstate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       650,000
Initial Cost of Buildings       5,444,220
Costs Capitalized Subsequent to Acquisition       0
Land and Improvements       650,000
Building and Improvements       5,444,220
Gross Amount Carried at End of Period 6,094,220     6,094,220
Accumulated Depreciation 884,333     884,333
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,094,220      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 884,333      
Operating Properties [Member] | 1200 Claybrick Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,876,500
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       13,422,075
Land and Improvements       8,329,026
Building and Improvements       11,969,549
Gross Amount Carried at End of Period 20,298,575     20,298,575
Accumulated Depreciation 411,097     411,097
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,298,575      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 411,097      
Operating Properties [Member] | 1806 Highway 146th South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,055,035
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,603,062
Land and Improvements       1,055,035
Building and Improvements       8,603,062
Gross Amount Carried at End of Period 9,658,097     9,658,097
Accumulated Depreciation 169,943     169,943
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,658,097      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 169,943      
Operating Properties [Member] | 11425 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       975,974
Initial Cost of Buildings       3,409,036
Costs Capitalized Subsequent to Acquisition       100,699
Land and Improvements       977,542
Building and Improvements       3,508,166
Gross Amount Carried at End of Period 4,485,708     4,485,708
Accumulated Depreciation 1,194,423     1,194,423
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,485,708      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,194,423      
Operating Properties [Member] | 11503 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,561,931
Initial Cost of Buildings       9,695,493
Costs Capitalized Subsequent to Acquisition       275,721
Land and Improvements       2,566,047
Building and Improvements       9,967,098
Gross Amount Carried at End of Period 12,533,145     12,533,145
Accumulated Depreciation 3,207,609     3,207,609
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,533,145      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,207,609      
Operating Properties [Member] | 1701 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,063,262
Initial Cost of Buildings       18,719,368
Costs Capitalized Subsequent to Acquisition       382,127
Land and Improvements       4,063,262
Building and Improvements       19,101,495
Gross Amount Carried at End of Period 23,164,757     23,164,757
Accumulated Depreciation 1,916,139     1,916,139
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 23,164,757      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,916,139      
Operating Properties [Member] | 1801 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,794,963
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       24,450,486
Land and Improvements       5,421,262
Building and Improvements       22,824,187
Gross Amount Carried at End of Period 28,245,449     28,245,449
Accumulated Depreciation 625,303     625,303
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 28,245,449      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 625,303      
Operating Properties [Member] | 1842 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,226,284
Initial Cost of Buildings       11,976,185
Costs Capitalized Subsequent to Acquisition       36,589
Land and Improvements       2,226,284
Building and Improvements       12,012,773
Gross Amount Carried at End of Period 14,239,057     14,239,057
Accumulated Depreciation 1,260,847     1,260,847
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,239,057      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,260,847      
Operating Properties [Member] | 1902 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,369,095
Initial Cost of Buildings       14,119,020
Costs Capitalized Subsequent to Acquisition       0
Land and Improvements       2,369,095
Building and Improvements       14,119,020
Gross Amount Carried at End of Period 16,488,115     16,488,115
Accumulated Depreciation 1,600,934     1,600,934
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,488,115      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,600,934      
Operating Properties [Member] | 640 S State Road 39 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,612,787
Initial Cost of Buildings       18,065,552
Costs Capitalized Subsequent to Acquisition       1,616,742
Land and Improvements       1,612,787
Building and Improvements       19,682,294
Gross Amount Carried at End of Period 21,295,081     21,295,081
Accumulated Depreciation 3,570,065     3,570,065
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,295,081      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,570,065      
Operating Properties [Member] | 7528 Walker Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       893,441
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,723,661
Land and Improvements       779,330
Building and Improvements       5,837,772
Gross Amount Carried at End of Period 6,617,102     6,617,102
Accumulated Depreciation 2,423,715     2,423,715
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,617,102      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,423,715      
Operating Properties [Member] | 8301 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,249,550
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       49,336,083
Land and Improvements       11,254,716
Building and Improvements       49,330,917
Gross Amount Carried at End of Period 60,585,633     60,585,633
Accumulated Depreciation 15,583,663     15,583,663
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 60,585,633      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 15,583,663      
Operating Properties [Member] | 8500 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,398,815
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       33,820,841
Land and Improvements       11,355,974
Building and Improvements       28,863,682
Gross Amount Carried at End of Period 40,219,656     40,219,656
Accumulated Depreciation 7,315,151     7,315,151
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 40,219,656      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 7,315,151      
Operating Properties [Member] | 875 Maxham Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       445,493
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (445,493)
Land and Improvements       445,493
Building and Improvements       12,497,910
Gross Amount Carried at End of Period 12,943,403     12,943,403
Accumulated Depreciation 103,850     103,850
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,943,403      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 103,850      
Operating Properties [Member] | 8742 Congdon Hill Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       22,444,500
Initial Cost of Buildings       20,222,582
Costs Capitalized Subsequent to Acquisition       1,049,581
Land and Improvements       22,444,500
Building and Improvements       21,272,163
Gross Amount Carried at End of Period 43,716,663     43,716,663
Accumulated Depreciation 1,772,720     1,772,720
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 43,716,663      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,772,720      
Operating Properties [Member] | 7533 Industrial Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,603,460
Initial Cost of Buildings       18,807,987
Costs Capitalized Subsequent to Acquisition       1,844,916
Land and Improvements       5,603,460
Building and Improvements       20,652,903
Gross Amount Carried at End of Period 26,256,363     26,256,363
Accumulated Depreciation 4,260,071     4,260,071
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 26,256,363      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,260,071      
Operating Properties [Member] | 1169 Canton Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,232,219
Initial Cost of Buildings       17,897,326
Costs Capitalized Subsequent to Acquisition       1,103,211
Land and Improvements       1,232,219
Building and Improvements       19,000,537
Gross Amount Carried at End of Period 20,232,756     20,232,756
Accumulated Depreciation 2,958,497     2,958,497
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,232,756      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,958,497      
Operating Properties [Member] | 65 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       557,174
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,604,588
Land and Improvements       506,318
Building and Improvements       2,655,444
Gross Amount Carried at End of Period 3,161,762     3,161,762
Accumulated Depreciation 847,177     847,177
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,161,762      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 847,177      
Operating Properties [Member] | 75 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       419,731
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,360,647
Land and Improvements       430,909
Building and Improvements       2,349,469
Gross Amount Carried at End of Period 2,780,378     2,780,378
Accumulated Depreciation 872,047     872,047
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,780,378      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 872,047      
Operating Properties [Member] | 126-132 Liberty Industrial Pkw [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       600,666
Initial Cost of Buildings       4,184,131
Costs Capitalized Subsequent to Acquisition       1,141,035
Land and Improvements       600,666
Building and Improvements       5,325,165
Gross Amount Carried at End of Period 5,925,831     5,925,831
Accumulated Depreciation 1,221,974     1,221,974
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,925,831      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,221,974      
Operating Properties [Member] | 95-115 Liberty Industrial Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       660,420
Initial Cost of Buildings       4,785,127
Costs Capitalized Subsequent to Acquisition       1,953,184
Land and Improvements       660,420
Building and Improvements       6,738,311
Gross Amount Carried at End of Period 7,398,731     7,398,731
Accumulated Depreciation 1,305,224     1,305,224
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,398,731      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,305,224      
Operating Properties [Member] | 11150 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,627,899
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,262,772
Land and Improvements       6,627,899
Building and Improvements       12,262,772
Gross Amount Carried at End of Period 18,890,671     18,890,671
Accumulated Depreciation 944,453     944,453
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 18,890,671      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 944,453      
Operating Properties [Member] | 11250 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,798,886
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,225,467
Land and Improvements       4,798,886
Building and Improvements       9,225,467
Gross Amount Carried at End of Period 14,024,353     14,024,353
Accumulated Depreciation 674,485     674,485
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,024,353      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 674,485      
Operating Properties [Member] | 11401 NW 134th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,558,619
Initial Cost of Buildings       17,678,237
Costs Capitalized Subsequent to Acquisition       1,055,318
Land and Improvements       5,558,619
Building and Improvements       18,733,555
Gross Amount Carried at End of Period 24,292,174     24,292,174
Accumulated Depreciation 3,356,484     3,356,484
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 24,292,174      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,356,484      
Operating Properties [Member] | 11450 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,623,293
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,366,498
Land and Improvements       3,919,238
Building and Improvements       9,070,553
Gross Amount Carried at End of Period 12,989,791     12,989,791
Accumulated Depreciation 918,910     918,910
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,989,791      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 918,910      
Operating Properties [Member] | 8801 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       23,016,646
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       14,966,354
Land and Improvements       37,983,000
Building and Improvements       37,213,752
Gross Amount Carried at End of Period 75,196,752     75,196,752
Accumulated Depreciation 133,104     133,104
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 75,196,752      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 133,104      
Operating Properties [Member] | 11440 NW 122 Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,636,564
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       10,784,572
Land and Improvements       5,944,709
Building and Improvements       10,476,427
Gross Amount Carried at End of Period 16,421,136     16,421,136
Accumulated Depreciation 415,013     415,013
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,421,136      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 415,013      
Operating Properties [Member] | 456 International Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,862,683
Initial Cost of Buildings       14,357,981
Costs Capitalized Subsequent to Acquisition       4,627,511
Land and Improvements       3,862,683
Building and Improvements       18,985,492
Gross Amount Carried at End of Period 22,848,175     22,848,175
Accumulated Depreciation 3,283,262     3,283,262
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,848,175      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,283,262      
Operating Properties [Member] | 21 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,097,170
Initial Cost of Buildings       9,715,401
Costs Capitalized Subsequent to Acquisition       561,745
Land and Improvements       2,097,170
Building and Improvements       10,277,146
Gross Amount Carried at End of Period 12,374,316     12,374,316
Accumulated Depreciation 2,020,602     2,020,602
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,374,316      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,020,602      
Operating Properties [Member] | 4 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,263,153
Initial Cost of Buildings       10,261,759
Costs Capitalized Subsequent to Acquisition       893,599
Land and Improvements       2,263,153
Building and Improvements       11,155,358
Gross Amount Carried at End of Period 13,418,511     13,418,511
Accumulated Depreciation 2,062,836     2,062,836
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,418,511      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,062,836      
Operating Properties [Member] | 230 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,031,058
Initial Cost of Buildings       2,775,467
Costs Capitalized Subsequent to Acquisition       52,276
Land and Improvements       4,026,732
Building and Improvements       2,832,069
Gross Amount Carried at End of Period 6,858,801     6,858,801
Accumulated Depreciation 129,827     129,827
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,858,801      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 129,827      
Operating Properties [Member] | 234 Moonachie Avenue [Member] [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       24,169,414
Land and Improvements       15,228,204
Building and Improvements       8,941,210
Gross Amount Carried at End of Period 24,169,414     24,169,414
Accumulated Depreciation 162,628     162,628
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 24,169,414      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 162,628      
Operating Properties [Member] | 250 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,435,430
Initial Cost of Buildings       7,272,539
Costs Capitalized Subsequent to Acquisition       479,044
Land and Improvements       10,426,856
Building and Improvements       7,760,157
Gross Amount Carried at End of Period 18,187,013     18,187,013
Accumulated Depreciation 329,411     329,411
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 18,187,013      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 329,411      
Operating Properties [Member] | 22750 Cactus Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       9,404,283
Initial Cost of Buildings       24,380,934
Costs Capitalized Subsequent to Acquisition       1,851,865
Land and Improvements       9,408,276
Building and Improvements       26,228,806
Gross Amount Carried at End of Period 35,637,082     35,637,082
Accumulated Depreciation 3,113,478     3,113,478
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 35,637,082      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,113,478      
Operating Properties [Member] | 323 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,071,600
Initial Cost of Buildings       4,397,807
Costs Capitalized Subsequent to Acquisition       1,029,987
Land and Improvements       1,071,600
Building and Improvements       5,427,794
Gross Amount Carried at End of Period 6,499,394     6,499,394
Accumulated Depreciation 1,747,361     1,747,361
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,499,394      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,747,361      
Operating Properties [Member] | 324 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,449,092
Initial Cost of Buildings       4,424,932
Costs Capitalized Subsequent to Acquisition       407,975
Land and Improvements       1,449,450
Building and Improvements       4,832,549
Gross Amount Carried at End of Period 6,281,999     6,281,999
Accumulated Depreciation 1,531,434     1,531,434
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,281,999      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,531,434      
Operating Properties [Member] | 619 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,031,430
Initial Cost of Buildings       5,655,167
Costs Capitalized Subsequent to Acquisition       730,511
Land and Improvements       1,031,685
Building and Improvements       6,385,423
Gross Amount Carried at End of Period 7,417,108     7,417,108
Accumulated Depreciation 1,889,543     1,889,543
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,417,108      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,889,543      
Operating Properties [Member] | 627 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,061,370
Initial Cost of Buildings       5,152,110
Costs Capitalized Subsequent to Acquisition       415,421
Land and Improvements       1,061,632
Building and Improvements       5,567,269
Gross Amount Carried at End of Period 6,628,901     6,628,901
Accumulated Depreciation 1,575,041     1,575,041
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,628,901      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,575,041      
Operating Properties [Member] | 25 Coddington Crescent [Member] [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,766,328
Initial Cost of Buildings       8,341,701
Costs Capitalized Subsequent to Acquisition       11,835,679
Land and Improvements       1,766,328
Building and Improvements       10,069,351
Gross Amount Carried at End of Period 11,835,679     11,835,679
Accumulated Depreciation 76,843     76,843
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,835,679      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 76,843      
Operating Properties [Member] | 4 Britain Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       699,424
Initial Cost of Buildings       5,896,241
Costs Capitalized Subsequent to Acquisition       7,482,435
Land and Improvements       699,424
Building and Improvements       6,783,011
Gross Amount Carried at End of Period 7,482,435     7,482,435
Accumulated Depreciation 53,082     53,082
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,482,435      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 53,082      
Operating Properties [Member] | 1775 Hillcrest Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,318,956
Initial Cost of Buildings       4,379,239
Costs Capitalized Subsequent to Acquisition       860,030
Land and Improvements       1,321,595
Building and Improvements       5,236,630
Gross Amount Carried at End of Period 6,558,225     6,558,225
Accumulated Depreciation 143,389     143,389
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,558,225      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 143,389      
Operating Properties [Member] | St Davids Way, Bermuda Park [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,545,374
Initial Cost of Buildings       21,279,020
Costs Capitalized Subsequent to Acquisition       26,462,690
Land and Improvements       3,545,374
Building and Improvements       22,917,316
Gross Amount Carried at End of Period 26,462,690     26,462,690
Accumulated Depreciation 163,468     163,468
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 26,462,690      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 163,468      
Operating Properties [Member] | 1879 Lamont Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,976,000
Initial Cost of Buildings       8,099,579
Costs Capitalized Subsequent to Acquisition       2,090,522
Land and Improvements       2,011,030
Building and Improvements       10,155,071
Gross Amount Carried at End of Period 12,166,101     12,166,101
Accumulated Depreciation 3,762,008     3,762,008
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,166,101      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,762,008      
Operating Properties [Member] | 350 Winmeyer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,778,400
Initial Cost of Buildings       7,289,165
Costs Capitalized Subsequent to Acquisition       1,729,188
Land and Improvements       1,809,927
Building and Improvements       8,986,826
Gross Amount Carried at End of Period 10,796,753     10,796,753
Accumulated Depreciation 3,029,788     3,029,788
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,796,753      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,029,788      
Operating Properties [Member] | 1 Chadderton Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,397,990
Initial Cost of Buildings       15,045,200
Costs Capitalized Subsequent to Acquisition       19,742,036
Land and Improvements       3,397,990
Building and Improvements       16,344,046
Gross Amount Carried at End of Period 19,742,036     19,742,036
Accumulated Depreciation 118,106     118,106
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 19,742,036      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 118,106      
Operating Properties [Member] | 4000 E Airport Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,686,533
Initial Cost of Buildings       10,125,772
Costs Capitalized Subsequent to Acquisition       723,876
Land and Improvements       2,686,533
Building and Improvements       10,849,648
Gross Amount Carried at End of Period 13,536,181     13,536,181
Accumulated Depreciation 1,826,827     1,826,827
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,536,181      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,826,827      
Operating Properties [Member] | 1000 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       415,906
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,699,594
Land and Improvements       435,400
Building and Improvements       2,680,100
Gross Amount Carried at End of Period 3,115,500     3,115,500
Accumulated Depreciation 675,351     675,351
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,115,500      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 675,351      
Operating Properties [Member] | 10003 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       680,312
Initial Cost of Buildings       2,120,754
Costs Capitalized Subsequent to Acquisition       1,379,008
Land and Improvements       680,312
Building and Improvements       3,499,762
Gross Amount Carried at End of Period 4,180,074     4,180,074
Accumulated Depreciation 1,587,470     1,587,470
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,180,074      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,587,470      
Operating Properties [Member] | 10511 & 10611 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       517,554
Initial Cost of Buildings       2,568,186
Costs Capitalized Subsequent to Acquisition       719,885
Land and Improvements       522,991
Building and Improvements       3,282,634
Gross Amount Carried at End of Period 3,805,625     3,805,625
Accumulated Depreciation 1,793,683     1,793,683
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,805,625      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,793,683      
Operating Properties [Member] | 10771 Palm Bay Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       664,605
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,515,652
Land and Improvements       685,383
Building and Improvements       2,494,874
Gross Amount Carried at End of Period 3,180,257     3,180,257
Accumulated Depreciation 1,036,885     1,036,885
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,180,257      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,036,885      
Operating Properties [Member] | 1090 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       878,320
Initial Cost of Buildings       2,558,833
Costs Capitalized Subsequent to Acquisition       3,836,603
Land and Improvements       878,320
Building and Improvements       6,395,436
Gross Amount Carried at End of Period 7,273,756     7,273,756
Accumulated Depreciation 1,666,984     1,666,984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,273,756      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,666,984      
Operating Properties [Member] | 1600-1650 Central Florida Park [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       518,043
Initial Cost of Buildings       2,561,938
Costs Capitalized Subsequent to Acquisition       966,144
Land and Improvements       518,043
Building and Improvements       3,528,082
Gross Amount Carried at End of Period 4,046,125     4,046,125
Accumulated Depreciation 1,995,393     1,995,393
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,046,125      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,995,393      
Operating Properties [Member] | 1902 Cypress Lake Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       523,512
Initial Cost of Buildings       3,191,790
Costs Capitalized Subsequent to Acquisition       1,576,299
Land and Improvements       538,512
Building and Improvements       4,753,089
Gross Amount Carried at End of Period 5,291,601     5,291,601
Accumulated Depreciation 2,523,921     2,523,921
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,291,601      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,523,921      
Operating Properties [Member] | 2000 Park Oaks Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       913,201
Initial Cost of Buildings       6,818,610
Costs Capitalized Subsequent to Acquisition       993,299
Land and Improvements       913,201
Building and Improvements       7,811,909
Gross Amount Carried at End of Period 8,725,110     8,725,110
Accumulated Depreciation 1,380,151     1,380,151
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,725,110      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,380,151      
Operating Properties [Member] | 2202 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,283,713
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,315,061
Land and Improvements       1,283,713
Building and Improvements       7,315,061
Gross Amount Carried at End of Period 8,598,774     8,598,774
Accumulated Depreciation 3,362,636     3,362,636
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,598,774      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,362,636      
Operating Properties [Member] | 2212 Taft Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       838,853
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,084,540
Land and Improvements       767,953
Building and Improvements       4,155,440
Gross Amount Carried at End of Period 4,923,393     4,923,393
Accumulated Depreciation 1,521,775     1,521,775
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,923,393      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,521,775      
Operating Properties [Member] | 2256 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       467,296
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,856,683
Land and Improvements       825,673
Building and Improvements       2,498,306
Gross Amount Carried at End of Period 3,323,979     3,323,979
Accumulated Depreciation 1,062,229     1,062,229
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,323,979      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,062,229      
Operating Properties [Member] | 2351 Investors Row [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,261,924
Initial Cost of Buildings       7,496,249
Costs Capitalized Subsequent to Acquisition       1,930,820
Land and Improvements       2,271,785
Building and Improvements       9,417,208
Gross Amount Carried at End of Period 11,688,993     11,688,993
Accumulated Depreciation 3,385,169     3,385,169
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,688,993      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,385,169      
Operating Properties [Member] | 2400 South Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       385,964
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,283,015
Land and Improvements       642,427
Building and Improvements       3,026,552
Gross Amount Carried at End of Period 3,668,979     3,668,979
Accumulated Depreciation 1,549,470     1,549,470
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,668,979      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,549,470      
Operating Properties [Member] | 2412 Sand Lake Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,236,819
Initial Cost of Buildings       3,243,314
Costs Capitalized Subsequent to Acquisition       4,568,856
Land and Improvements       1,244,667
Building and Improvements       7,804,322
Gross Amount Carried at End of Period 9,048,989     9,048,989
Accumulated Depreciation 1,350,464     1,350,464
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,048,989      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,350,464      
Operating Properties [Member] | 2416 Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       535,964
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,842,755
Land and Improvements       704,800
Building and Improvements       3,673,919
Gross Amount Carried at End of Period 4,378,719     4,378,719
Accumulated Depreciation 2,130,755     2,130,755
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,378,719      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,130,755      
Operating Properties [Member] | 6918 Presidents Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       872,550
Initial Cost of Buildings       2,526,043
Costs Capitalized Subsequent to Acquisition       737,771
Land and Improvements       872,550
Building and Improvements       3,263,814
Gross Amount Carried at End of Period 4,136,364     4,136,364
Accumulated Depreciation 518,602     518,602
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,136,364      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 518,602      
Operating Properties [Member] | 7022 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,443,510
Initial Cost of Buildings       6,775,194
Costs Capitalized Subsequent to Acquisition       742,426
Land and Improvements       1,457,286
Building and Improvements       7,503,845
Gross Amount Carried at End of Period 8,961,131     8,961,131
Accumulated Depreciation 2,413,321     2,413,321
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,961,131      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,413,321      
Operating Properties [Member] | 7100 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,431,489
Initial Cost of Buildings       8,002,539
Costs Capitalized Subsequent to Acquisition       1,229,189
Land and Improvements       1,445,807
Building and Improvements       9,217,410
Gross Amount Carried at End of Period 10,663,217     10,663,217
Accumulated Depreciation 2,812,110     2,812,110
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,663,217      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,812,110      
Operating Properties [Member] | 7101 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,553,537
Initial Cost of Buildings       5,702,243
Costs Capitalized Subsequent to Acquisition       683,338
Land and Improvements       1,570,863
Building and Improvements       6,368,255
Gross Amount Carried at End of Period 7,939,118     7,939,118
Accumulated Depreciation 2,003,125     2,003,125
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,939,118      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,003,125      
Operating Properties [Member] | 7315 Kingspointe Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,931,697
Initial Cost of Buildings       6,388,203
Costs Capitalized Subsequent to Acquisition       3,004,875
Land and Improvements       1,932,004
Building and Improvements       9,392,771
Gross Amount Carried at End of Period 11,324,775     11,324,775
Accumulated Depreciation 4,210,338     4,210,338
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,324,775      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,210,338      
Operating Properties [Member] | 851 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       332,992
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,800,616
Land and Improvements       373,500
Building and Improvements       2,760,108
Gross Amount Carried at End of Period 3,133,608     3,133,608
Accumulated Depreciation 789,066     789,066
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,133,608      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 789,066      
Operating Properties [Member] | 950 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       443,989
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,817,146
Land and Improvements       464,800
Building and Improvements       2,796,335
Gross Amount Carried at End of Period 3,261,135     3,261,135
Accumulated Depreciation 736,047     736,047
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,261,135      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 736,047      
Operating Properties [Member] | 9550 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       574,831
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,680,052
Land and Improvements       587,319
Building and Improvements       2,667,564
Gross Amount Carried at End of Period 3,254,883     3,254,883
Accumulated Depreciation 1,503,602     1,503,602
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,254,883      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,503,602      
Operating Properties [Member] | 9700 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       252,850
Initial Cost of Buildings       1,297,923
Costs Capitalized Subsequent to Acquisition       185,097
Land and Improvements       252,850
Building and Improvements       1,483,020
Gross Amount Carried at End of Period 1,735,870     1,735,870
Accumulated Depreciation 800,355     800,355
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,735,870      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 800,355      
Operating Properties [Member] | 9600 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       405,362
Initial Cost of Buildings       1,146,546
Costs Capitalized Subsequent to Acquisition       461,635
Land and Improvements       405,362
Building and Improvements       1,608,181
Gross Amount Carried at End of Period 2,013,543     2,013,543
Accumulated Depreciation 833,631     833,631
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,013,543      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 833,631      
Operating Properties [Member] | 1050 Constitution Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,969,501
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       40,135,583
Land and Improvements       1,976,602
Building and Improvements       40,682,682
Gross Amount Carried at End of Period 42,659,284     42,659,284
Accumulated Depreciation 606,773     606,773
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 42,659,284      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 606,773      
Operating Properties [Member] | 1 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       567,280
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       15,159,791
Land and Improvements       347,892
Building and Improvements       15,379,179
Gross Amount Carried at End of Period 15,727,071     15,727,071
Accumulated Depreciation 4,949,937     4,949,937
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,727,071      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,949,937      
Operating Properties [Member] | 3 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       214,726
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       30,383,327
Land and Improvements       417,823
Building and Improvements       30,180,230
Gross Amount Carried at End of Period 30,598,053     30,598,053
Accumulated Depreciation 5,343,193     5,343,193
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 30,598,053      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,343,193      
Operating Properties [Member] | 1200 Intrepid Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       404,883
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       31,029,101
Land and Improvements       455,507
Building and Improvements       30,978,477
Gross Amount Carried at End of Period 31,433,984     31,433,984
Accumulated Depreciation 1,485,896     1,485,896
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 31,433,984      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,485,896      
Operating Properties [Member] | 150 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       567,531
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       14,232,898
Land and Improvements       569,349
Building and Improvements       14,231,080
Gross Amount Carried at End of Period 14,800,429     14,800,429
Accumulated Depreciation 2,686,999     2,686,999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,800,429      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,686,999      
Operating Properties [Member] | 201 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       243,905
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       22,543,251
Land and Improvements       449,013
Building and Improvements       22,338,143
Gross Amount Carried at End of Period 22,787,156     22,787,156
Accumulated Depreciation 2,736,766     2,736,766
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,787,156      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,736,766      
Operating Properties [Member] | 351 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       359,864
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       16,768,954
Land and Improvements       367,016
Building and Improvements       16,761,802
Gross Amount Carried at End of Period 17,128,818     17,128,818
Accumulated Depreciation 951,162     951,162
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 17,128,818      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 951,162      
Operating Properties [Member] | 4000 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,255,507
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       10,816,114
Land and Improvements       1,142,358
Building and Improvements       10,929,263
Gross Amount Carried at End of Period 12,071,621     12,071,621
Accumulated Depreciation 823,673     823,673
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,071,621      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 823,673      
Operating Properties [Member] | 4020 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       51,784
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,165,151
Land and Improvements       616,467
Building and Improvements       6,600,468
Gross Amount Carried at End of Period 7,216,935     7,216,935
Accumulated Depreciation 1,248,308     1,248,308
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,216,935      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,248,308      
Operating Properties [Member] | 4050 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       46,301
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,034,962
Land and Improvements       616,670
Building and Improvements       6,464,593
Gross Amount Carried at End of Period 7,081,263     7,081,263
Accumulated Depreciation 1,424,780     1,424,780
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,081,263      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,424,780      
Operating Properties [Member] | 4300 South 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       402,673
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       34,930,238
Land and Improvements       413,030
Building and Improvements       34,919,881
Gross Amount Carried at End of Period 35,332,911     35,332,911
Accumulated Depreciation 8,438,036     8,438,036
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 35,332,911      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 8,438,036      
Operating Properties [Member] | 4701 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       419,107
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       13,300,078
Land and Improvements       435,763
Building and Improvements       13,283,422
Gross Amount Carried at End of Period 13,719,185     13,719,185
Accumulated Depreciation 1,063,742     1,063,742
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,719,185      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,063,742      
Operating Properties [Member] | 4751 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       992,965
Initial Cost of Buildings       331,924
Costs Capitalized Subsequent to Acquisition       7,829,618
Land and Improvements       613,248
Building and Improvements       8,541,259
Gross Amount Carried at End of Period 9,154,507     9,154,507
Accumulated Depreciation 3,595,406     3,595,406
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,154,507      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,595,406      
Operating Properties [Member] | 4775 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       891,892
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,578,803
Land and Improvements       366,982
Building and Improvements       6,103,713
Gross Amount Carried at End of Period 6,470,695     6,470,695
Accumulated Depreciation 1,803,316     1,803,316
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,470,695      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,803,316      
Operating Properties [Member] | 8th & Walnut Streets [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       36,752,064
Initial Cost of Land       734,275
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       45,396,637
Land and Improvements       0
Building and Improvements       46,130,912
Gross Amount Carried at End of Period 46,130,912     46,130,912
Accumulated Depreciation 5,562,538     5,562,538
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 46,130,912      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 5,562,538      
Operating Properties [Member] | 2626 South 7th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,519,510
Initial Cost of Buildings       3,798,560
Costs Capitalized Subsequent to Acquisition       3,442,614
Land and Improvements       2,519,510
Building and Improvements       7,241,174
Gross Amount Carried at End of Period 9,760,684     9,760,684
Accumulated Depreciation 1,712,070     1,712,070
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,760,684      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,712,070      
Operating Properties [Member] | 563 South 63rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,523,427
Initial Cost of Buildings       14,581,705
Costs Capitalized Subsequent to Acquisition       12,211,689
Land and Improvements       5,636,070
Building and Improvements       26,680,751
Gross Amount Carried at End of Period 32,316,821     32,316,821
Accumulated Depreciation 3,819,911     3,819,911
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 32,316,821      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,819,911      
Operating Properties [Member] | 1500 S 71st Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,234,407
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       21,315,017
Land and Improvements       5,547,810
Building and Improvements       20,001,614
Gross Amount Carried at End of Period 25,549,424     25,549,424
Accumulated Depreciation 652,047     652,047
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 25,549,424      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 652,047      
Operating Properties [Member] | 7205 W Buckeye Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,514,425
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,845,318
Land and Improvements       2,514,425
Building and Improvements       11,845,318
Gross Amount Carried at End of Period 14,359,743     14,359,743
Accumulated Depreciation 594,030     594,030
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,359,743      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 594,030      
Operating Properties [Member] | 1000 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       706,660
Initial Cost of Buildings       5,894,330
Costs Capitalized Subsequent to Acquisition       1,095,222
Land and Improvements       706,660
Building and Improvements       6,989,553
Gross Amount Carried at End of Period 7,696,213     7,696,213
Accumulated Depreciation 1,076,247     1,076,247
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,696,213      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,076,247      
Operating Properties [Member] | 1901 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       555,168
Initial Cost of Buildings       6,401,789
Costs Capitalized Subsequent to Acquisition       720,056
Land and Improvements       555,168
Building and Improvements       7,121,845
Gross Amount Carried at End of Period 7,677,013     7,677,013
Accumulated Depreciation 1,274,999     1,274,999
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,677,013      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,274,999      
Operating Properties [Member] | 1909 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       551,706
Initial Cost of Buildings       5,797,440
Costs Capitalized Subsequent to Acquisition       339,750
Land and Improvements       551,706
Building and Improvements       6,137,190
Gross Amount Carried at End of Period 6,688,896     6,688,896
Accumulated Depreciation 1,076,450     1,076,450
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,688,896      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,076,450      
Operating Properties [Member] | 3605 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,047,996
Initial Cost of Buildings       9,218,748
Costs Capitalized Subsequent to Acquisition       1,970,078
Land and Improvements       1,047,996
Building and Improvements       11,188,825
Gross Amount Carried at End of Period 12,236,821     12,236,821
Accumulated Depreciation 2,318,952     2,318,952
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,236,821      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,318,952      
Operating Properties [Member] | 3701 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       877,564
Initial Cost of Buildings       7,460,686
Costs Capitalized Subsequent to Acquisition       772,833
Land and Improvements       877,564
Building and Improvements       8,233,518
Gross Amount Carried at End of Period 9,111,082     9,111,082
Accumulated Depreciation 1,441,738     1,441,738
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,111,082      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,441,738      
Operating Properties [Member] | 800 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       580,456
Initial Cost of Buildings       5,681,283
Costs Capitalized Subsequent to Acquisition       1,600,103
Land and Improvements       580,456
Building and Improvements       7,281,386
Gross Amount Carried at End of Period 7,861,842     7,861,842
Accumulated Depreciation 1,349,144     1,349,144
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,861,842      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,349,144      
Operating Properties [Member] | 900 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       723,534
Initial Cost of Buildings       6,004,923
Costs Capitalized Subsequent to Acquisition       778,787
Land and Improvements       723,534
Building and Improvements       6,783,710
Gross Amount Carried at End of Period 7,507,244     7,507,244
Accumulated Depreciation 1,246,138     1,246,138
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,507,244      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,246,138      
Operating Properties [Member] | 9801 80th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,692,077
Initial Cost of Buildings       7,934,794
Costs Capitalized Subsequent to Acquisition       58,274
Land and Improvements       1,689,726
Building and Improvements       7,995,419
Gross Amount Carried at End of Period 9,685,145     9,685,145
Accumulated Depreciation 4,010,311     4,010,311
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,685,145      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,010,311      
Operating Properties [Member] | 14630-14650 28th Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       198,205
Initial Cost of Buildings       1,793,422
Costs Capitalized Subsequent to Acquisition       1,096,872
Land and Improvements       198,205
Building and Improvements       2,890,293
Gross Amount Carried at End of Period 3,088,498     3,088,498
Accumulated Depreciation 1,614,891     1,614,891
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,088,498      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,614,891      
Operating Properties [Member] | 2920 Northwest Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       392,026
Initial Cost of Buildings       3,433,678
Costs Capitalized Subsequent to Acquisition       850,998
Land and Improvements       384,235
Building and Improvements       4,292,467
Gross Amount Carried at End of Period 4,676,702     4,676,702
Accumulated Depreciation 2,195,023     2,195,023
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,676,702      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,195,023      
Operating Properties [Member] | 5905 Trenton Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,616,360
Initial Cost of Buildings       4,487,462
Costs Capitalized Subsequent to Acquisition       735,223
Land and Improvements       1,616,360
Building and Improvements       5,222,684
Gross Amount Carried at End of Period 6,839,044     6,839,044
Accumulated Depreciation 1,060,984     1,060,984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,839,044      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,060,984      
Operating Properties [Member] | 6055 Nathan Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,327,017
Initial Cost of Buildings       4,527,404
Costs Capitalized Subsequent to Acquisition       1,180,962
Land and Improvements       1,327,017
Building and Improvements       5,708,366
Gross Amount Carried at End of Period 7,035,383     7,035,383
Accumulated Depreciation 1,061,431     1,061,431
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,035,383      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,061,431      
Operating Properties [Member] | 1400 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,157,049
Initial Cost of Buildings       4,620,956
Costs Capitalized Subsequent to Acquisition       1,447,640
Land and Improvements       1,157,049
Building and Improvements       6,068,596
Gross Amount Carried at End of Period 7,225,645     7,225,645
Accumulated Depreciation 3,133,452     3,133,452
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,225,645      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,133,452      
Operating Properties [Member] | 1405 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       392,138
Initial Cost of Buildings       1,565,787
Costs Capitalized Subsequent to Acquisition       443,460
Land and Improvements       392,138
Building and Improvements       2,009,248
Gross Amount Carried at End of Period 2,401,386     2,401,386
Accumulated Depreciation 1,111,539     1,111,539
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,401,386      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,111,539      
Operating Properties [Member] | 1500 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       972,232
Initial Cost of Buildings       3,892,085
Costs Capitalized Subsequent to Acquisition       2,133,854
Land and Improvements       972,232
Building and Improvements       6,025,939
Gross Amount Carried at End of Period 6,998,171     6,998,171
Accumulated Depreciation 2,552,632     2,552,632
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,998,171      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,552,632      
Operating Properties [Member] | 1501 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       203,247
Initial Cost of Buildings       811,093
Costs Capitalized Subsequent to Acquisition       370,236
Land and Improvements       203,247
Building and Improvements       1,181,330
Gross Amount Carried at End of Period 1,384,577     1,384,577
Accumulated Depreciation 664,965     664,965
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,384,577      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 664,965      
Operating Properties [Member] | 1601 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       203,247
Initial Cost of Buildings       811,093
Costs Capitalized Subsequent to Acquisition       208,224
Land and Improvements       203,247
Building and Improvements       1,019,318
Gross Amount Carried at End of Period 1,222,565     1,222,565
Accumulated Depreciation 510,197     510,197
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,222,565      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 510,197      
Operating Properties [Member] | 1651 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       203,247
Initial Cost of Buildings       811,093
Costs Capitalized Subsequent to Acquisition       154,435
Land and Improvements       203,247
Building and Improvements       965,529
Gross Amount Carried at End of Period 1,168,776     1,168,776
Accumulated Depreciation 484,879     484,879
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,168,776      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 484,879      
Operating Properties [Member] | 2201-2215 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,120,328
Initial Cost of Buildings       3,427,358
Costs Capitalized Subsequent to Acquisition       131,571
Land and Improvements       1,120,328
Building and Improvements       3,558,929
Gross Amount Carried at End of Period 4,679,257     4,679,257
Accumulated Depreciation 604,820     604,820
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,679,257      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 604,820      
Operating Properties [Member] | 2250-2270 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       993,015
Initial Cost of Buildings       2,423,174
Costs Capitalized Subsequent to Acquisition       164,947
Land and Improvements       993,015
Building and Improvements       2,588,121
Gross Amount Carried at End of Period 3,581,136     3,581,136
Accumulated Depreciation 452,707     452,707
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,581,136      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 452,707      
Operating Properties [Member] | 2280-2300 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       906,947
Initial Cost of Buildings       2,157,802
Costs Capitalized Subsequent to Acquisition       205,748
Land and Improvements       906,947
Building and Improvements       2,363,551
Gross Amount Carried at End of Period 3,270,498     3,270,498
Accumulated Depreciation 440,559     440,559
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,270,498      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 440,559      
Operating Properties [Member] | 2301-2329 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,268,707
Initial Cost of Buildings       3,079,811
Costs Capitalized Subsequent to Acquisition       194,453
Land and Improvements       1,268,707
Building and Improvements       3,274,264
Gross Amount Carried at End of Period 4,542,971     4,542,971
Accumulated Depreciation 541,027     541,027
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,542,971      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 541,027      
Operating Properties [Member] | 3000 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,087,554
Initial Cost of Buildings       2,897,117
Costs Capitalized Subsequent to Acquisition       151,201
Land and Improvements       1,087,554
Building and Improvements       3,048,318
Gross Amount Carried at End of Period 4,135,872     4,135,872
Accumulated Depreciation 519,491     519,491
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,135,872      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 519,491      
Operating Properties [Member] | 3001-3037 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,548,542
Initial Cost of Buildings       3,512,041
Costs Capitalized Subsequent to Acquisition       327,643
Land and Improvements       1,548,542
Building and Improvements       3,839,685
Gross Amount Carried at End of Period 5,388,227     5,388,227
Accumulated Depreciation 759,253     759,253
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,388,227      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 759,253      
Operating Properties [Member] | 3012-3050 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,112,781
Initial Cost of Buildings       2,763,862
Costs Capitalized Subsequent to Acquisition       259,688
Land and Improvements       1,112,781
Building and Improvements       3,023,549
Gross Amount Carried at End of Period 4,136,330     4,136,330
Accumulated Depreciation 542,917     542,917
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,136,330      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 542,917      
Operating Properties [Member] | 595 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       359,933
Initial Cost of Buildings       1,437,116
Costs Capitalized Subsequent to Acquisition       722,833
Land and Improvements       359,933
Building and Improvements       2,159,949
Gross Amount Carried at End of Period 2,519,882     2,519,882
Accumulated Depreciation 1,342,770     1,342,770
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,519,882      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,342,770      
Operating Properties [Member] | 601 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       164,413
Initial Cost of Buildings       655,933
Costs Capitalized Subsequent to Acquisition       279,326
Land and Improvements       164,413
Building and Improvements       935,259
Gross Amount Carried at End of Period 1,099,672     1,099,672
Accumulated Depreciation 558,243     558,243
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,099,672      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 558,243      
Operating Properties [Member] | 605 SW 16th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       310,778
Initial Cost of Buildings       1,238,324
Costs Capitalized Subsequent to Acquisition       294,844
Land and Improvements       310,178
Building and Improvements       1,533,768
Gross Amount Carried at End of Period 1,843,946     1,843,946
Accumulated Depreciation 720,079     720,079
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,843,946      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 720,079      
Operating Properties [Member] | 2459 Almond Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Land       3,810,171
Initial Cost of Buildings       11,979,923
Costs Capitalized Subsequent to Acquisition       211,352
Land and Improvements       3,810,839
Building and Improvements       12,190,607
Gross Amount Carried at End of Period 16,001,446     16,001,446
Accumulated Depreciation 441,125     441,125
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,001,446      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 441,125      
Operating Properties [Member] | 1221 N Alder Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Land       17,280,833
Initial Cost of Buildings       72,740,859
Costs Capitalized Subsequent to Acquisition       84,913
Land and Improvements       17,289,021
Building and Improvements       72,817,584
Gross Amount Carried at End of Period 90,106,605     90,106,605
Accumulated Depreciation 1,833,441     1,833,441
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 90,106,605      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,833,441      
Operating Properties [Member] | 1543 N Alder Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       53,779,093
Land and Improvements       25,480,304
Building and Improvements       28,298,789
Gross Amount Carried at End of Period 53,779,093     53,779,093
Accumulated Depreciation 377,929     377,929
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 53,779,093      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 377,929      
Operating Properties [Member] | 1920 West Baseline Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       9,361,943
Initial Cost of Buildings       17,970,709
Costs Capitalized Subsequent to Acquisition       464,691
Land and Improvements       9,411,621
Building and Improvements       18,385,722
Gross Amount Carried at End of Period 27,797,343     27,797,343
Accumulated Depreciation 1,890,258     1,890,258
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 27,797,343      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,890,258      
Operating Properties [Member] | 4101-4127 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       310,854
Initial Cost of Buildings       2,279,597
Costs Capitalized Subsequent to Acquisition       2,089,912
Land and Improvements       310,854
Building and Improvements       4,369,509
Gross Amount Carried at End of Period 4,680,363     4,680,363
Accumulated Depreciation 2,194,452     2,194,452
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,680,363      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,194,452      
Operating Properties [Member] | 4201-4261 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       693,203
Initial Cost of Buildings       5,083,493
Costs Capitalized Subsequent to Acquisition       2,566,101
Land and Improvements       693,203
Building and Improvements       7,649,594
Gross Amount Carried at End of Period 8,342,797     8,342,797
Accumulated Depreciation 4,372,081     4,372,081
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,342,797      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,372,081      
Operating Properties [Member] | 4263-4299 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       256,203
Initial Cost of Buildings       2,549,649
Costs Capitalized Subsequent to Acquisition       3,066,006
Land and Improvements       256,203
Building and Improvements       5,615,655
Gross Amount Carried at End of Period 5,871,858     5,871,858
Accumulated Depreciation 3,015,128     3,015,128
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,871,858      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,015,128      
Operating Properties [Member] | 4263F-N. Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       91,476
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,004,066
Land and Improvements       91,599
Building and Improvements       2,003,943
Gross Amount Carried at End of Period 2,095,542     2,095,542
Accumulated Depreciation 1,130,225     1,130,225
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,095,542      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,130,225      
Operating Properties [Member] | 4301-4335 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       223,696
Initial Cost of Buildings       1,640,435
Costs Capitalized Subsequent to Acquisition       2,945,220
Land and Improvements       223,696
Building and Improvements       4,585,655
Gross Amount Carried at End of Period 4,809,351     4,809,351
Accumulated Depreciation 2,353,099     2,353,099
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,809,351      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,353,099      
Operating Properties [Member] | 4337-4379 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       325,303
Initial Cost of Buildings       2,385,557
Costs Capitalized Subsequent to Acquisition       2,152,033
Land and Improvements       325,303
Building and Improvements       4,537,590
Gross Amount Carried at End of Period 4,862,893     4,862,893
Accumulated Depreciation 2,059,169     2,059,169
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,862,893      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,059,169      
Operating Properties [Member] | 4401-4445 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       615,038
Initial Cost of Buildings       4,510,272
Costs Capitalized Subsequent to Acquisition       681,107
Land and Improvements       615,038
Building and Improvements       5,191,379
Gross Amount Carried at End of Period 5,806,417     5,806,417
Accumulated Depreciation 3,013,701     3,013,701
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,806,417      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,013,701      
Operating Properties [Member] | 4447-4491 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       454,056
Initial Cost of Buildings       2,729,742
Costs Capitalized Subsequent to Acquisition       518,293
Land and Improvements       454,056
Building and Improvements       3,248,035
Gross Amount Carried at End of Period 3,702,091     3,702,091
Accumulated Depreciation 1,792,248     1,792,248
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,702,091      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,792,248      
Operating Properties [Member] | 4501-4549 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       486,166
Initial Cost of Buildings       3,565,211
Costs Capitalized Subsequent to Acquisition       588,033
Land and Improvements       486,166
Building and Improvements       4,153,244
Gross Amount Carried at End of Period 4,639,410     4,639,410
Accumulated Depreciation 2,551,191     2,551,191
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,639,410      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,551,191      
Operating Properties [Member] | 4551-4593 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       474,360
Initial Cost of Buildings       3,478,646
Costs Capitalized Subsequent to Acquisition       1,025,589
Land and Improvements       474,360
Building and Improvements       4,504,235
Gross Amount Carried at End of Period 4,978,595     4,978,595
Accumulated Depreciation 2,943,011     2,943,011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,978,595      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,943,011      
Operating Properties [Member] | 4601-4643 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       652,455
Initial Cost of Buildings       4,784,675
Costs Capitalized Subsequent to Acquisition       1,194,389
Land and Improvements       652,455
Building and Improvements       5,979,064
Gross Amount Carried at End of Period 6,631,519     6,631,519
Accumulated Depreciation 3,558,663     3,558,663
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,631,519      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,558,663      
Operating Properties [Member] | 4645-4683 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       404,616
Initial Cost of Buildings       2,967,187
Costs Capitalized Subsequent to Acquisition       643,220
Land and Improvements       404,616
Building and Improvements       3,610,407
Gross Amount Carried at End of Period 4,015,023     4,015,023
Accumulated Depreciation 2,193,223     2,193,223
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,015,023      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,193,223      
Operating Properties [Member] | 4717-4729 Eubank Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       449,447
Initial Cost of Buildings       3,294,697
Costs Capitalized Subsequent to Acquisition       2,250,479
Land and Improvements       452,263
Building and Improvements       5,542,360
Gross Amount Carried at End of Period 5,994,623     5,994,623
Accumulated Depreciation 3,268,835     3,268,835
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,994,623      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,268,835      
Operating Properties [Member] | 510 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       261,961
Initial Cost of Buildings       2,110,874
Costs Capitalized Subsequent to Acquisition       641,720
Land and Improvements       262,210
Building and Improvements       2,752,345
Gross Amount Carried at End of Period 3,014,555     3,014,555
Accumulated Depreciation 1,402,295     1,402,295
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,014,555      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,402,295      
Operating Properties [Member] | 520 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       486,118
Initial Cost of Buildings       4,083,582
Costs Capitalized Subsequent to Acquisition       746,952
Land and Improvements       486,598
Building and Improvements       4,830,054
Gross Amount Carried at End of Period 5,316,652     5,316,652
Accumulated Depreciation 2,623,833     2,623,833
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,316,652      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,623,833      
Operating Properties [Member] | 530 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       266,883
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,682,192
Land and Improvements       334,772
Building and Improvements       2,614,303
Gross Amount Carried at End of Period 2,949,075     2,949,075
Accumulated Depreciation 1,367,736     1,367,736
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,949,075      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,367,736      
Operating Properties [Member] | 540 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       742,300
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,433,394
Land and Improvements       1,066,839
Building and Improvements       5,108,855
Gross Amount Carried at End of Period 6,175,694     6,175,694
Accumulated Depreciation 1,405,045     1,405,045
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,175,694      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,405,045      
Operating Properties [Member] | 5600-5626 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       489,941
Initial Cost of Buildings       3,592,900
Costs Capitalized Subsequent to Acquisition       669,679
Land and Improvements       489,941
Building and Improvements       4,262,579
Gross Amount Carried at End of Period 4,752,520     4,752,520
Accumulated Depreciation 2,468,118     2,468,118
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,752,520      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,468,118      
Operating Properties [Member] | 5601-5659 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       705,660
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,755,118
Land and Improvements       720,100
Building and Improvements       4,740,678
Gross Amount Carried at End of Period 5,460,778     5,460,778
Accumulated Depreciation 2,795,547     2,795,547
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,460,778      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,795,547      
Operating Properties [Member] | 5650-5674 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       644,384
Initial Cost of Buildings       4,025,480
Costs Capitalized Subsequent to Acquisition       933,150
Land and Improvements       644,384
Building and Improvements       4,958,630
Gross Amount Carried at End of Period 5,603,014     5,603,014
Accumulated Depreciation 2,738,437     2,738,437
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,603,014      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,738,437      
Operating Properties [Member] | 5700 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       408,729
Initial Cost of Buildings       2,697,348
Costs Capitalized Subsequent to Acquisition       1,248,569
Land and Improvements       408,729
Building and Improvements       3,945,917
Gross Amount Carried at End of Period 4,354,646     4,354,646
Accumulated Depreciation 2,507,746     2,507,746
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,354,646      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,507,746      
Operating Properties [Member] | 5701-5799 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       694,644
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,798,481
Land and Improvements       700,503
Building and Improvements       5,792,622
Gross Amount Carried at End of Period 6,493,125     6,493,125
Accumulated Depreciation 2,925,775     2,925,775
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,493,125      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,925,775      
Operating Properties [Member] | 5800 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       604,146
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,590,970
Land and Improvements       604,146
Building and Improvements       7,590,970
Gross Amount Carried at End of Period 8,195,116     8,195,116
Accumulated Depreciation 643,207     643,207
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,195,116      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 643,207      
Operating Properties [Member] | 5900 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       676,661
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,981,687
Land and Improvements       687,898
Building and Improvements       4,970,450
Gross Amount Carried at End of Period 5,658,348     5,658,348
Accumulated Depreciation 2,803,370     2,803,370
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,658,348      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,803,370      
Operating Properties [Member] | 6000 Eastport Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       872,901
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,490,092
Land and Improvements       901,666
Building and Improvements       7,461,327
Gross Amount Carried at End of Period 8,362,993     8,362,993
Accumulated Depreciation 2,031,498     2,031,498
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,362,993      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,031,498      
Operating Properties [Member] | 6530 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       305,821
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,440,754
Land and Improvements       335,061
Building and Improvements       5,411,514
Gross Amount Carried at End of Period 5,746,575     5,746,575
Accumulated Depreciation 2,627,699     2,627,699
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,746,575      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,627,699      
Operating Properties [Member] | 6532 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       354,903
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,029,128
Land and Improvements       399,988
Building and Improvements       3,984,043
Gross Amount Carried at End of Period 4,384,031     4,384,031
Accumulated Depreciation 2,260,621     2,260,621
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,384,031      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,260,621      
Operating Properties [Member] | 13098 George Weber Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       895,811
Initial Cost of Buildings       6,004,189
Costs Capitalized Subsequent to Acquisition       1,311,797
Land and Improvements       895,811
Building and Improvements       7,315,986
Gross Amount Carried at End of Period 8,211,797     8,211,797
Accumulated Depreciation 1,351,177     1,351,177
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,211,797      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,351,177      
Operating Properties [Member] | 13220 Wilfred Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       508,532
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,756,860
Land and Improvements       1,396,324
Building and Improvements       10,869,068
Gross Amount Carried at End of Period 12,265,392     12,265,392
Accumulated Depreciation 1,512,312     1,512,312
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,265,392      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,512,312      
Operating Properties [Member] | 13225 Brockton Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,048,093
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       10,464,170
Land and Improvements       1,066,159
Building and Improvements       10,446,104
Gross Amount Carried at End of Period 11,512,263     11,512,263
Accumulated Depreciation 1,404,988     1,404,988
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,512,263      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,404,988      
Operating Properties [Member] | 1070 Windham Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,672,143
Initial Cost of Buildings       24,144,864
Costs Capitalized Subsequent to Acquisition       1,238,550
Land and Improvements       8,672,143
Building and Improvements       25,383,414
Gross Amount Carried at End of Period 34,055,557     34,055,557
Accumulated Depreciation 4,189,884     4,189,884
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 34,055,557      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,189,884      
Operating Properties [Member] | 1550 Central Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,884,492
Initial Cost of Buildings       10,439,793
Costs Capitalized Subsequent to Acquisition       1,444,499
Land and Improvements       2,884,492
Building and Improvements       11,884,292
Gross Amount Carried at End of Period 14,768,784     14,768,784
Accumulated Depreciation 2,164,340     2,164,340
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,768,784      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,164,340      
Operating Properties [Member] | 9724 Alabama Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,140,486
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (56,250)
Land and Improvements       4,084,236
Building and Improvements       10,914,982
Gross Amount Carried at End of Period 14,999,218     14,999,218
Accumulated Depreciation 23,175     23,175
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,999,218      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 23,175      
Operating Properties [Member] | 1135 Aviation Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,035,034
Initial Cost of Buildings       2,844,962
Costs Capitalized Subsequent to Acquisition       488,199
Land and Improvements       3,035,034
Building and Improvements       3,333,161
Gross Amount Carried at End of Period 6,368,195     6,368,195
Accumulated Depreciation 642,395     642,395
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,368,195      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 642,395      
Operating Properties [Member] | 5800 Technology Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,741,867
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,041,734
Land and Improvements       1,744,160
Building and Improvements       12,039,441
Gross Amount Carried at End of Period 13,783,601     13,783,601
Accumulated Depreciation 726,814     726,814
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,783,601      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 726,814      
Operating Properties [Member] | 8715 Bollman Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,263,237
Initial Cost of Buildings       2,633,210
Costs Capitalized Subsequent to Acquisition       218,782
Land and Improvements       1,263,237
Building and Improvements       2,851,992
Gross Amount Carried at End of Period 4,115,229     4,115,229
Accumulated Depreciation 531,258     531,258
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,115,229      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 531,258      
Operating Properties [Member] | 1150 Gateway Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,126,865
Initial Cost of Buildings       5,684,178
Costs Capitalized Subsequent to Acquisition       207,627
Land and Improvements       1,126,865
Building and Improvements       5,891,805
Gross Amount Carried at End of Period 7,018,670     7,018,670
Accumulated Depreciation 981,977     981,977
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,018,670      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 981,977      
Operating Properties [Member] | 5555 12th Avenue East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       887,285
Initial Cost of Buildings       5,321,200
Costs Capitalized Subsequent to Acquisition       805,245
Land and Improvements       887,285
Building and Improvements       6,126,445
Gross Amount Carried at End of Period 7,013,730     7,013,730
Accumulated Depreciation 1,049,514     1,049,514
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,013,730      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,049,514      
Operating Properties [Member] | 5651 Innovation Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,551,579
Initial Cost of Buildings       9,541,234
Costs Capitalized Subsequent to Acquisition       1,989,410
Land and Improvements       1,552,083
Building and Improvements       11,530,140
Gross Amount Carried at End of Period 13,082,223     13,082,223
Accumulated Depreciation 939,155     939,155
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,082,223      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 939,155      
Operating Properties [Member] | 12110 Champion Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,337,271
Initial Cost of Buildings       6,135,118
Costs Capitalized Subsequent to Acquisition       730,402
Land and Improvements       1,337,271
Building and Improvements       6,865,521
Gross Amount Carried at End of Period 8,202,792     8,202,792
Accumulated Depreciation 1,334,626     1,334,626
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,202,792      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,334,626      
Operating Properties [Member] | 9300 Old Scotland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,232,633
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       84,609,660
Land and Improvements       12,933,027
Building and Improvements       81,909,266
Gross Amount Carried at End of Period 94,842,293     94,842,293
Accumulated Depreciation 10,842,342     10,842,342
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 94,842,293      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 10,842,342      
Operating Properties [Member] | 3990 Heritage Oak Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,964,140
Initial Cost of Buildings       10,667,267
Costs Capitalized Subsequent to Acquisition       356,197
Land and Improvements       1,964,140
Building and Improvements       11,023,464
Gross Amount Carried at End of Period 12,987,604     12,987,604
Accumulated Depreciation 1,762,737     1,762,737
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,987,604      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,762,737      
Operating Properties [Member] | 3654-3668 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       643,639
Initial Cost of Buildings       1,645,058
Costs Capitalized Subsequent to Acquisition       250,143
Land and Improvements       643,639
Building and Improvements       1,895,201
Gross Amount Carried at End of Period 2,538,840     2,538,840
Accumulated Depreciation 361,656     361,656
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,538,840      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 361,656      
Operating Properties [Member] | 3701 Illinois Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       672,500
Initial Cost of Buildings       1,288,924
Costs Capitalized Subsequent to Acquisition       135,971
Land and Improvements       672,500
Building and Improvements       1,424,895
Gross Amount Carried at End of Period 2,097,395     2,097,395
Accumulated Depreciation 300,560     300,560
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,097,395      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 300,560      
Operating Properties [Member] | 3950-3980 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       851,080
Initial Cost of Buildings       3,027,753
Costs Capitalized Subsequent to Acquisition       531,111
Land and Improvements       851,080
Building and Improvements       3,558,864
Gross Amount Carried at End of Period 4,409,944     4,409,944
Accumulated Depreciation 620,639     620,639
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,409,944      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 620,639      
Operating Properties [Member] | 1501 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       283,474
Initial Cost of Buildings       2,230,868
Costs Capitalized Subsequent to Acquisition       176,960
Land and Improvements       283,474
Building and Improvements       2,407,827
Gross Amount Carried at End of Period 2,691,301     2,691,301
Accumulated Depreciation 418,656     418,656
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,691,301      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 418,656      
Operating Properties [Member] | 1527 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       374,284
Initial Cost of Buildings       2,987,226
Costs Capitalized Subsequent to Acquisition       329,505
Land and Improvements       374,284
Building and Improvements       3,316,731
Gross Amount Carried at End of Period 3,691,015     3,691,015
Accumulated Depreciation 561,602     561,602
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,691,015      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 561,602      
Operating Properties [Member] | 1551 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       699,797
Initial Cost of Buildings       5,214,438
Costs Capitalized Subsequent to Acquisition       1,049,296
Land and Improvements       699,797
Building and Improvements       6,263,734
Gross Amount Carried at End of Period 6,963,531     6,963,531
Accumulated Depreciation 1,210,288     1,210,288
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,963,531      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,210,288      
Operating Properties [Member] | 1 Mirrlees Drive, Hazel Grove [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,866,851
Initial Cost of Buildings       13,756,142
Costs Capitalized Subsequent to Acquisition       16,783,468
Land and Improvements       1,866,851
Building and Improvements       14,916,617
Gross Amount Carried at End of Period 16,783,468     16,783,468
Accumulated Depreciation 107,500     107,500
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,783,468      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 107,500      
Operating Properties [Member] | 6900 Harbor View Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       904,052
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,985,558
Land and Improvements       807,006
Building and Improvements       9,082,604
Gross Amount Carried at End of Period 9,889,610     9,889,610
Accumulated Depreciation 3,071,800     3,071,800
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,889,610      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,071,800      
Operating Properties [Member] | 6920 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       603,391
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,811,311
Land and Improvements       2,628,635
Building and Improvements       4,786,067
Gross Amount Carried at End of Period 7,414,702     7,414,702
Accumulated Depreciation 964,958     964,958
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,414,702      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 964,958      
Operating Properties [Member] | 6950 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       929,844
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,443,948
Land and Improvements       794,848
Building and Improvements       6,578,944
Gross Amount Carried at End of Period 7,373,792     7,373,792
Accumulated Depreciation 2,268,848     2,268,848
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,373,792      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,268,848      
Operating Properties [Member] | 1516 Fryar Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,675,402
Initial Cost of Buildings       5,079,543
Costs Capitalized Subsequent to Acquisition       1,196,146
Land and Improvements       1,675,402
Building and Improvements       6,275,689
Gross Amount Carried at End of Period 7,951,091     7,951,091
Accumulated Depreciation 1,226,516     1,226,516
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,951,091      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,226,516      
Operating Properties [Member] | 3401-3409 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       556,952
Initial Cost of Buildings       3,849,236
Costs Capitalized Subsequent to Acquisition       22,919
Land and Improvements       556,952
Building and Improvements       3,872,155
Gross Amount Carried at End of Period 4,429,107     4,429,107
Accumulated Depreciation 592,900     592,900
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,429,107      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 592,900      
Operating Properties [Member] | 3502 Riga Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       201,600
Initial Cost of Buildings       1,263,131
Costs Capitalized Subsequent to Acquisition       274,110
Land and Improvements       201,600
Building and Improvements       1,537,241
Gross Amount Carried at End of Period 1,738,841     1,738,841
Accumulated Depreciation 236,984     236,984
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,738,841      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 236,984      
Operating Properties [Member] | 3505 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       936,336
Initial Cost of Buildings       7,155,520
Costs Capitalized Subsequent to Acquisition       (145,469)
Land and Improvements       936,336
Building and Improvements       7,010,051
Gross Amount Carried at End of Period 7,946,387     7,946,387
Accumulated Depreciation 1,061,076     1,061,076
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,946,387      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,061,076      
Operating Properties [Member] | 3608 Queen Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       650,384
Initial Cost of Buildings       4,764,301
Costs Capitalized Subsequent to Acquisition       251,943
Land and Improvements       650,384
Building and Improvements       5,016,244
Gross Amount Carried at End of Period 5,666,628     5,666,628
Accumulated Depreciation 827,248     827,248
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,666,628      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 827,248      
Operating Properties [Member] | 5250 Eagle Trail Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       952,860
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,638,210
Land and Improvements       952,860
Building and Improvements       3,638,210
Gross Amount Carried at End of Period 4,591,070     4,591,070
Accumulated Depreciation 1,844,262     1,844,262
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,591,070      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,844,262      
Operating Properties [Member] | 5501-5519 Pioneer Park Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       162,000
Initial Cost of Buildings       1,613,000
Costs Capitalized Subsequent to Acquisition       1,113,554
Land and Improvements       262,416
Building and Improvements       2,626,138
Gross Amount Carried at End of Period 2,888,554     2,888,554
Accumulated Depreciation 1,526,249     1,526,249
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,888,554      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,526,249      
Operating Properties [Member] | 5690-5694 Crenshaw Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       181,923
Initial Cost of Buildings       1,812,496
Costs Capitalized Subsequent to Acquisition       1,023,370
Land and Improvements       181,923
Building and Improvements       2,835,866
Gross Amount Carried at End of Period 3,017,789     3,017,789
Accumulated Depreciation 1,551,921     1,551,921
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,017,789      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,551,921      
Operating Properties [Member] | 8110 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       912,663
Initial Cost of Buildings       5,425,143
Costs Capitalized Subsequent to Acquisition       357,492
Land and Improvements       912,663
Building and Improvements       5,782,635
Gross Amount Carried at End of Period 6,695,298     6,695,298
Accumulated Depreciation 1,072,414     1,072,414
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,695,298      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,072,414      
Operating Properties [Member] | 8130 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       655,668
Initial Cost of Buildings       4,132,076
Costs Capitalized Subsequent to Acquisition       169,879
Land and Improvements       655,668
Building and Improvements       4,301,955
Gross Amount Carried at End of Period 4,957,623     4,957,623
Accumulated Depreciation 769,863     769,863
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,957,623      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 769,863      
Operating Properties [Member] | 9020 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,718,496
Initial Cost of Buildings       11,697,381
Costs Capitalized Subsequent to Acquisition       912,448
Land and Improvements       1,718,496
Building and Improvements       12,609,829
Gross Amount Carried at End of Period 14,328,325     14,328,325
Accumulated Depreciation 2,057,458     2,057,458
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,328,325      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,057,458      
Operating Properties [Member] | 9110 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,203,200
Initial Cost of Buildings       7,979,540
Costs Capitalized Subsequent to Acquisition       860,302
Land and Improvements       1,203,200
Building and Improvements       8,839,842
Gross Amount Carried at End of Period 10,043,042     10,043,042
Accumulated Depreciation 1,390,359     1,390,359
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,043,042      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,390,359      
Operating Properties [Member] | 9203 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       754,832
Initial Cost of Buildings       4,966,864
Costs Capitalized Subsequent to Acquisition       (22,188)
Land and Improvements       754,832
Building and Improvements       4,944,676
Gross Amount Carried at End of Period 5,699,508     5,699,508
Accumulated Depreciation 760,840     760,840
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,699,508      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 760,840      
Operating Properties [Member] | 9319 Peach Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       612,536
Initial Cost of Buildings       4,168,473
Costs Capitalized Subsequent to Acquisition       693,900
Land and Improvements       612,536
Building and Improvements       4,862,373
Gross Amount Carried at End of Period 5,474,909     5,474,909
Accumulated Depreciation 704,408     704,408
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,474,909      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 704,408      
Operating Properties [Member] | 9704 Solar Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       374,548
Initial Cost of Buildings       1,354,800
Costs Capitalized Subsequent to Acquisition       969,548
Land and Improvements       374,548
Building and Improvements       2,324,348
Gross Amount Carried at End of Period 2,698,896     2,698,896
Accumulated Depreciation 330,766     330,766
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,698,896      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 330,766      
Operating Properties [Member] | 9945 Currie Davis Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,134,286
Initial Cost of Buildings       9,241,807
Costs Capitalized Subsequent to Acquisition       380,833
Land and Improvements       1,134,286
Building and Improvements       9,622,639
Gross Amount Carried at End of Period 10,756,925     10,756,925
Accumulated Depreciation 1,674,500     1,674,500
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,756,925      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,674,500      
Operating Properties [Member] | 1858 E Encanto Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       877,611
Initial Cost of Buildings       4,485,427
Costs Capitalized Subsequent to Acquisition       580,036
Land and Improvements       877,611
Building and Improvements       5,065,463
Gross Amount Carried at End of Period 5,943,074     5,943,074
Accumulated Depreciation 924,966     924,966
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,943,074      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 924,966      
Operating Properties [Member] | 2040 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,225,000
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       13,156,274
Land and Improvements       3,225,000
Building and Improvements       13,156,274
Gross Amount Carried at End of Period 16,381,274     16,381,274
Accumulated Depreciation 1,043,224     1,043,224
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,381,274      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,043,224      
Operating Properties [Member] | 475 W Vaughn St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,112,245
Initial Cost of Buildings       2,260,348
Costs Capitalized Subsequent to Acquisition       392,442
Land and Improvements       1,112,245
Building and Improvements       2,652,790
Gross Amount Carried at End of Period 3,765,035     3,765,035
Accumulated Depreciation 523,937     523,937
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,765,035      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 523,937      
Operating Properties [Member] | 921 South Park Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,192,820
Initial Cost of Buildings       1,580,155
Costs Capitalized Subsequent to Acquisition       480,998
Land and Improvements       1,192,820
Building and Improvements       2,061,154
Gross Amount Carried at End of Period 3,253,974     3,253,974
Accumulated Depreciation 557,812     557,812
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,253,974      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 557,812      
Operating Properties [Member] | 8313 West Pierce Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,295,090
Initial Cost of Buildings       9,079,811
Costs Capitalized Subsequent to Acquisition       4,105,744
Land and Improvements       2,295,090
Building and Improvements       13,185,555
Gross Amount Carried at End of Period 15,480,645     15,480,645
Accumulated Depreciation 4,599,392     4,599,392
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,480,645      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,599,392      
Operating Properties [Member] | 8591 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,574,912
Initial Cost of Buildings       7,308,021
Costs Capitalized Subsequent to Acquisition       547,804
Land and Improvements       1,574,912
Building and Improvements       7,855,825
Gross Amount Carried at End of Period 9,430,737     9,430,737
Accumulated Depreciation 1,379,880     1,379,880
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,430,737      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,379,880      
Operating Properties [Member] | 8601 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,524,603
Initial Cost of Buildings       6,352,070
Costs Capitalized Subsequent to Acquisition       855,107
Land and Improvements       1,524,603
Building and Improvements       7,207,177
Gross Amount Carried at End of Period 8,731,780     8,731,780
Accumulated Depreciation 1,374,431     1,374,431
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,731,780      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,374,431      
Operating Properties [Member] | 5111 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       435,776
Initial Cost of Buildings       1,875,685
Costs Capitalized Subsequent to Acquisition       533,161
Land and Improvements       435,776
Building and Improvements       2,408,847
Gross Amount Carried at End of Period 2,844,623     2,844,623
Accumulated Depreciation 544,546     544,546
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,844,623      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 544,546      
Operating Properties [Member] | 5151 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       345,061
Initial Cost of Buildings       1,428,840
Costs Capitalized Subsequent to Acquisition       321,327
Land and Improvements       345,061
Building and Improvements       1,750,167
Gross Amount Carried at End of Period 2,095,228     2,095,228
Accumulated Depreciation 406,637     406,637
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,095,228      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 406,637      
Operating Properties [Member] | Trafalgar house, Temple Court, Daten Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,731,891
Initial Cost of Buildings       11,566,166
Costs Capitalized Subsequent to Acquisition       15,093,255
Land and Improvements       2,731,891
Building and Improvements       12,361,364
Gross Amount Carried at End of Period 15,093,255     15,093,255
Accumulated Depreciation 87,138     87,138
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,093,255      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 87,138      
Operating Properties [Member] | 1400 Powis Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       578,314
Initial Cost of Buildings       2,448,562
Costs Capitalized Subsequent to Acquisition       73,377
Land and Improvements       578,314
Building and Improvements       2,521,939
Gross Amount Carried at End of Period 3,100,253     3,100,253
Accumulated Depreciation 409,846     409,846
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,100,253      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 409,846      
Operating Properties [Member] | 1 Kings Hill Aveune [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,288,389
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,248,373
Land and Improvements       3,192,636
Building and Improvements       8,344,126
Gross Amount Carried at End of Period 11,536,762     11,536,762
Accumulated Depreciation 2,787,910     2,787,910
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,536,762      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,787,910      
Operating Properties [Member] | 42 Kings Hill Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,397,739
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,420,831
Land and Improvements       1,886,646
Building and Improvements       4,931,924
Gross Amount Carried at End of Period 6,818,570     6,818,570
Accumulated Depreciation 1,278,343     1,278,343
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,818,570      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,278,343      
Operating Properties [Member] | Liberty Square, Block 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       159,232
Initial Cost of Buildings       1,622,551
Costs Capitalized Subsequent to Acquisition       522,446
Land and Improvements       256,732
Building and Improvements       2,047,498
Gross Amount Carried at End of Period 2,304,230     2,304,230
Accumulated Depreciation 713,693     713,693
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,304,230      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 713,693      
Operating Properties [Member] | Liberty Square, Block 2 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       199,150
Initial Cost of Buildings       1,614,217
Costs Capitalized Subsequent to Acquisition       545,985
Land and Improvements       321,094
Building and Improvements       2,038,258
Gross Amount Carried at End of Period 2,359,352     2,359,352
Accumulated Depreciation 685,285     685,285
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,359,352      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 685,285      
Operating Properties [Member] | Liberty Square, Block 3 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       129,830
Initial Cost of Buildings       1,141,141
Costs Capitalized Subsequent to Acquisition       381,745
Land and Improvements       209,327
Building and Improvements       1,443,389
Gross Amount Carried at End of Period 1,652,716     1,652,716
Accumulated Depreciation 481,132     481,132
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,652,716      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 481,132      
Operating Properties [Member] | Liberty Square, Block 5 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       71,377
Initial Cost of Buildings       735,993
Costs Capitalized Subsequent to Acquisition       236,751
Land and Improvements       115,081
Building and Improvements       929,040
Gross Amount Carried at End of Period 1,044,121     1,044,121
Accumulated Depreciation 309,811     309,811
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,044,121      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 309,811      
Operating Properties [Member] | 29 Liberty Square [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       165,363
Initial Cost of Buildings       1,139,928
Costs Capitalized Subsequent to Acquisition       (48,529)
Land and Improvements       159,487
Building and Improvements       1,097,274
Gross Amount Carried at End of Period 1,256,761     1,256,761
Accumulated Depreciation 68,884     68,884
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,256,761      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 68,884      
Operating Properties [Member] | 1400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,454,972
Initial Cost of Buildings       5,312,829
Costs Capitalized Subsequent to Acquisition       279,589
Land and Improvements       2,454,972
Building and Improvements       5,592,418
Gross Amount Carried at End of Period 8,047,390     8,047,390
Accumulated Depreciation 1,129,090     1,129,090
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,047,390      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 1,129,090      
Operating Properties [Member] | 300 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,177,064
Initial Cost of Buildings       2,102,451
Costs Capitalized Subsequent to Acquisition       160,370
Land and Improvements       1,177,064
Building and Improvements       2,262,821
Gross Amount Carried at End of Period 3,439,885     3,439,885
Accumulated Depreciation 439,188     439,188
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,439,885      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 439,188      
Operating Properties [Member] | 400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,029,595
Initial Cost of Buildings       1,728,187
Costs Capitalized Subsequent to Acquisition       183,074
Land and Improvements       1,029,595
Building and Improvements       1,911,261
Gross Amount Carried at End of Period 2,940,856     2,940,856
Accumulated Depreciation 383,082     383,082
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,940,856      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 383,082      
Operating Properties [Member] | 6017 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,513,860
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,171,069
Land and Improvements       4,513,860
Building and Improvements       9,171,069
Gross Amount Carried at End of Period 13,684,929     13,684,929
Accumulated Depreciation 268,019     268,019
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,684,929      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 268,019      
Operating Properties [Member] | 6035 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,499,894
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,403,466
Land and Improvements       2,499,984
Building and Improvements       5,403,376
Gross Amount Carried at End of Period 7,903,360     7,903,360
Accumulated Depreciation 169,183     169,183
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,903,360      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 169,183      
Operating Properties [Member] | 2935 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,682,521
Initial Cost of Buildings       25,905,126
Costs Capitalized Subsequent to Acquisition       1,433,338
Land and Improvements       4,682,521
Building and Improvements       27,338,464
Gross Amount Carried at End of Period 32,020,985     32,020,985
Accumulated Depreciation 4,157,921     4,157,921
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 32,020,985      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 4,157,921      
Operating Properties [Member] | 2945 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,345,242
Initial Cost of Buildings       13,973,766
Costs Capitalized Subsequent to Acquisition       245,440
Land and Improvements       2,345,242
Building and Improvements       14,219,206
Gross Amount Carried at End of Period 16,565,448     16,565,448
Accumulated Depreciation 2,102,272     2,102,272
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,565,448      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 2,102,272      
Operating Properties [Member] | 43-47 Hintz Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,051,093
Initial Cost of Buildings       18,283,480
Costs Capitalized Subsequent to Acquisition       537,835
Land and Improvements       2,051,093
Building and Improvements       18,821,316
Gross Amount Carried at End of Period 20,872,409     20,872,409
Accumulated Depreciation 3,035,542     3,035,542
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,872,409      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 3,035,542      
Operating Properties [Member] | Unit 4, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       843,256
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,787,296
Land and Improvements       1,128,558
Building and Improvements       3,501,994
Gross Amount Carried at End of Period 4,630,552     4,630,552
Accumulated Depreciation 108,001     108,001
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,630,552      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 108,001      
Operating Properties [Member] | Unt 3, Plot 163, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,004,097
Initial Cost of Buildings       8,113,667
Costs Capitalized Subsequent to Acquisition       13,079,858
Land and Improvements       4,004,097
Building and Improvements       9,075,761
Gross Amount Carried at End of Period 13,079,858     13,079,858
Accumulated Depreciation 111,591     111,591
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,079,858      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 111,591      
Operating Properties [Member] | 2980 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       16,338
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,732,191
Land and Improvements       729,479
Building and Improvements       3,019,050
Gross Amount Carried at End of Period 3,748,529     3,748,529
Accumulated Depreciation 54,419     54,419
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,748,529      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 54,419      
Operating Properties [Member] | 11430 NW 122 Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,790,968
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (2,481,843)
Land and Improvements       3,309,125
Building and Improvements       6,088,926
Gross Amount Carried at End of Period 9,398,051     9,398,051
Accumulated Depreciation 69,855     69,855
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,398,051      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 69,855      
Operating Properties [Member] | Plot 10A, Worcester Six, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,173,413
Initial Cost of Buildings       12,518,191
Costs Capitalized Subsequent to Acquisition       17,023,085
Land and Improvements       4,173,413
Building and Improvements       12,849,672
Gross Amount Carried at End of Period 17,023,085     17,023,085
Accumulated Depreciation 53,499     53,499
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 17,023,085      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation $ 53,499      
Operating Properties [Member] | Maximum        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1467 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1501 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 869 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 901 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8620 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 200 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 250 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 400 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 650 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 651 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 700 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 705 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7165 Ambassador Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7248 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7339 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7437 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8014 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8150 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8250 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8400 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6330 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6350 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6370 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6390 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6520 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6540 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6560 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6580 Snowdrift Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7620 Cetronia Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3095 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3097 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7030 Buford Highway NE [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Barton 150 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1055-1071 Kingsland Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4606 Richlynn Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11800 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11850 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11900 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12104 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12200 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12240 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1071 Thorndale Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1260-1274 Ellis Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 371-377 Meyer Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 350 North York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 850-880 Devon Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10 Emery Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2785 Commerce Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1455 Remington Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 150 E Crossroads Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 553 S Joliet Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 400 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8201 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8451 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 860 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3525 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3535 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Tesco Trucking Station [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 100 Carolina Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 105 Amor Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1485 W Commerce Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 40 Logistics Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 135-195 East Elk Trail [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 515 Kehoe Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1413 Bradley Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3200 Belmeade Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16325 S Avalon Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1475 Nitterhouse Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 95 Kriner Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9000 109th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11701 Goodrich Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12810 Virkler Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2700 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2701 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2730 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2801 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3000 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3005 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4045 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4047 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4525 Statesville Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4835 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4925 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5032 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5033 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5039 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8910 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8916 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8924 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3923 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3929 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2601 Indian River Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1540 S 54th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4650 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4750 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 15025 Proctor Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9645 Gerwig Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2550 John Glenn Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3800 Twin Creeks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5959 Randolph St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 330 South Royal Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 455 Airline Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2130 Baldwin Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11020 Holly Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 329-333 Herrod Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1250 Hall Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 333 Howard Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 131 Aldersgate Street & 14-17 Carthusian Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1680 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1700 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2670 Breckinridge Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 170 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 190 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 265 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 285 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1000 Parliament Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4226 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4227 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4234 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4300 Emperor Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1951 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1953 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1955 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1957 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3169 Dodd Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3711 Kennebec Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 917 Lone Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10301-10305 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10321 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10333 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10349-10357 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10365-10375 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10393-10394 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7075 Flying Cloud Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7078 Shady Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1075 King George Post Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1 Truman Drive South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2250 Arthur Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6600 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6675 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7351 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 21705-21707 Mississippi Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 27143 Elwood International Port Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1800 Donaldson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6880 Fairfield Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7000-7018 Fairfield Business [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10721 Jasmine Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2000 Southpointe Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1400 NW 65th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6500 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6501 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6600 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11222 Melrose Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9601 Cosner Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5410 - 5430 Northwest 33rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12601 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12641 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12681-12691 Pala Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1720 West 135th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 850 S Jupiter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2510 W Main Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4251 North Highway 121 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1150 Pleasant Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 25 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 45 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2011 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2121 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 800 Commerce Parkway West Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 110 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 120 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 130 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 140 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2988 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 125 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2727 London Groveport Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11835 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11841 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1560 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1575 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7361 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7460 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7462 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 500 McCarthy Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 600 Industrial Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7195 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7253 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12537 Cerise Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1010 Petersburg Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 785 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 805 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 825 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 845 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4198 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4183 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4189 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4193 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4328, 4336 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4344 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4380 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4388 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4475 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4485 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4500 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4501 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4523 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4524 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Unit 5 Logix Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1000 South Loop West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10241 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10245 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10301 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10305 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1050 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10607 Haddington Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10735 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10739 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11201 Greens Crossing Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11220 Ella Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1283 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1287 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1291 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1416 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1420 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 14200 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1424 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1428 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 14300 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 14400 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 15102 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 15150 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16330 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16405 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16420 West Hardy Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16445 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1646 Rankin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1655 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16580 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16602 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16605 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1665 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16680 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16685 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1755 Trans Central Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4301 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4401 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4501 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5200 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5250 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5500 N. Sam Houston Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8017 Pinemont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8272 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8282 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8301 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8303 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 850 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 860 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8801-19 & 8821-49 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8802-8824 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8825-8839 N Sam Houston Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8850-8872 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 16200 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5430 FAA Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 951 Valleyview Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Cabot III UK1B01 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1011 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1035 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1549 W Glenlake Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 901 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 925 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8241 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8242 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8246 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 19 Crows Mill Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1305 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1325 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3600 Cobb International Bld NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Unit 1 Bear Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 650 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 680 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1770 Interstate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1200 Claybrick Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1806 Highway 146th South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11425 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11503 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1701 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1801 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1842 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1902 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 640 S State Road 39 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7528 Walker Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8301 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8500 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 875 Maxham Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8742 Congdon Hill Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7533 Industrial Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1169 Canton Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 65 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 75 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 126-132 Liberty Industrial Pkw [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 95-115 Liberty Industrial Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11150 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11250 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11401 NW 134th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11450 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8801 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 11440 NW 122 Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 456 International Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 21 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 230 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 250 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 22750 Cactus Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 323 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 324 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 619 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 627 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 25 Coddington Crescent [Member] [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1775 Hillcrest Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1879 Lamont Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 350 Winmeyer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1 Chadderton Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4000 E Airport Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1000 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10003 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10511 & 10611 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 10771 Palm Bay Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1090 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1600-1650 Central Florida Park [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1902 Cypress Lake Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2000 Park Oaks Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2202 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2212 Taft Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2256 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2351 Investors Row [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2400 South Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2412 Sand Lake Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2416 Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6918 Presidents Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7022 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7100 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7101 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7315 Kingspointe Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 851 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 950 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9550 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9700 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9600 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1050 Constitution Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1200 Intrepid Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 150 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 201 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 351 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4000 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4020 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4050 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4300 South 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4701 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4751 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4775 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8th & Walnut Streets [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2626 South 7th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 563 South 63rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1500 S 71st Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 7205 W Buckeye Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1000 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1901 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1909 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3605 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3701 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 800 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 900 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9801 80th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 14630-14650 28th Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2920 Northwest Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5905 Trenton Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6055 Nathan Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1400 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1405 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1500 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1501 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1601 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1651 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2201-2215 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2250-2270 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2280-2300 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2301-2329 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3000 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3001-3037 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3012-3050 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 595 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 601 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 605 SW 16th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2459 Almond Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1221 N Alder Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1543 N Alder Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1920 West Baseline Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4101-4127 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4201-4261 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4263-4299 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4263F-N. Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4301-4335 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4337-4379 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4401-4445 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4447-4491 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4501-4549 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4551-4593 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4601-4643 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4645-4683 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4717-4729 Eubank Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 510 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 520 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 530 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 540 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5600-5626 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5601-5659 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5650-5674 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5700 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5701-5799 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5800 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 4 Brittain Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5900 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6000 Eastport Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | St Davids Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6530 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6532 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 13098 George Weber Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 13220 Wilfred Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 13225 Brockton Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1070 Windham Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1550 Central Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9724 Alabama Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1135 Aviation Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5800 Technology Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8715 Bollman Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8501 East Raintree Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1150 Gateway Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5555 12th Avenue East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5651 Innovation Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 12110 Champion Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9300 Old Scotland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3990 Heritage Oak Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3654-3668 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3701 Illinois Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3950-3980 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1501 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1527 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1551 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1 Mirrlees Drive, Hazel Grove [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6900 Harbor View Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6920 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6950 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1516 Fryar Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3401-3409 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3502 Riga Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3505 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 3608 Queen Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5250 Eagle Trail Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5501-5519 Pioneer Park Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5690-5694 Crenshaw Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8110 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8130 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9020 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9110 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9203 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9319 Peach Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9704 Solar Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 9945 Currie Davis Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1850 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1858 E Encanto Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1910 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1930 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2040 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 475 W Vaughn St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 921 South Park Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8313 West Pierce Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8591 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 8601 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5111 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 5151 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Trafalgar house, Temple Court, Daten Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1400 Powis Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1 Kings Hill Aveune [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 42 Kings Hill Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Liberty Square, Block 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Liberty Square, Block 2 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Liberty Square, Block 3 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Liberty Square, Block 5 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 29 Liberty Square [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 1400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 300 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6017 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 6035 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2935 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2945 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 43-47 Hintz Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Worcester 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Unit 4, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Unt 3, Plot 163, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | 2980 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Maximum | Plot 10A, Worcester Six, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 40 years      
Operating Properties [Member] | Minimum | 1467 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1501 Perryman Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 869 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 901 S Route 53 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8620 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 200 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 250 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 400 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 650 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 651 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 700 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 705 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7165 Ambassador Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7248 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7339 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7437 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8014 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8150 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8250 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8400 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6330 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6350 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6370 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6390 Hedgewood Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6520 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6540 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6560 Stonegate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6580 Snowdrift Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7620 Cetronia Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2250 East Bardin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3095 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3097 Presidential Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7030 Buford Highway NE [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Barton 150 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1055-1071 Kingsland Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4606 Richlynn Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11800 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11850 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11900 Baltimore Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12104 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12200 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12240 Indian Creek Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1071 Thorndale Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1260-1274 Ellis Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 371-377 Meyer Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 350 North York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 850-880 Devon Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10 Emery Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2785 Commerce Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1455 Remington Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 150 E Crossroads Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 553 S Joliet Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 400 Boulder Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8201 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8451 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 860 Nestle Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3525 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3535 Gravel Springs Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Tesco Trucking Station [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 100 Carolina Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 105 Amor Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1485 W Commerce Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 40 Logistics Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 135-195 East Elk Trail [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 515 Kehoe Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1413 Bradley Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3200 Belmeade Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16325 S Avalon Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1475 Nitterhouse Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 95 Kriner Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9000 109th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11701 Goodrich Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12810 Virkler Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2700 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2701 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2730 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2801 Hutchison McDonald Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3000 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3005 Crosspoint Center Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4045 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4047 Perimeter West Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4525 Statesville Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4835 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4925 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5032 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5033 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5039 Sirona Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8910 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8916 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8924 Pioneer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3923 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3929 Shutterfly Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2601 Indian River Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1540 S 54th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4650 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4750 Lake Forest Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 15025 Proctor Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9645 Gerwig Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2550 John Glenn Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3800 Twin Creeks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5959 Randolph St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 330 South Royal Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 455 Airline Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2130 Baldwin Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11020 Holly Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 329-333 Herrod Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1250 Hall Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 333 Howard Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 131 Aldersgate Street & 14-17 Carthusian Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1680 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1700 Executive Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2670 Breckinridge Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 170 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 190 Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 265 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 285 Parkway East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1000 Parliament Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4226 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4227 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4234 Surles Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4300 Emperor Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1951 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1953 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1955 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1957 TW Alexander Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3169 Dodd Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3711 Kennebec Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 917 Lone Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10301-10305 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10321 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10333 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10349-10357 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10365-10375 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10393-10394 West 70th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7075 Flying Cloud Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7078 Shady Oak Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1075 King George Post Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1 Truman Drive South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2250 Arthur Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6600 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6675 Business Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7351 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 21705-21707 Mississippi Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 27143 Elwood International Port Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1800 Donaldson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6880 Fairfield Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7000-7018 Fairfield Business [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10721 Jasmine Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2000 Southpointe Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1400 NW 65th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6500 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6501 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6600 NW 12th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11222 Melrose Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9601 Cosner Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5410 - 5430 Northwest 33rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12601 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12641 Industry Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12681-12691 Pala Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1720 West 135th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 850 S Jupiter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2510 W Main Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4251 North Highway 121 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1150 Pleasant Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 25 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 45 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2011 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2121 Southtech Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 800 Commerce Parkway West Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 110 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 120 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 130 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 140 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2988 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 125 Caliber Ridge Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2727 London Groveport Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11835 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11841 Newgate Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1560 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1575 Hunter Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7361 Coca Cola Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7460 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7462 New Ridge Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 500 McCarthy Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 600 Industrial Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7195 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7253 Grayson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12537 Cerise Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1010 Petersburg Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 785 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 805 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 825 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 845 Lindbergh Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4198 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4183 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4189 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4193 Eagle Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4328, 4336 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4344 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4380 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4388 Federal Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4475 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4485 Premier Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4500 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4501 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4523 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4524 Green Point Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Unit 5 Logix Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1000 South Loop West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10241 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10245 W Little York Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10301 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10305 Round Up Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1050 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10607 Haddington Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10735 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10739 West Little York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11201 Greens Crossing Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11220 Ella Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1283 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1287 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1291 N Post Oak Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1416 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1420 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 14200 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1424 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1428 N Sam Houston Parkway E [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 14300 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 14400 Hollister Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 15102 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 15150 Sommermeyer St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16330 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16405 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16420 West Hardy Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16445 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1646 Rankin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1655 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16580 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16602 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16605 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1665 Townhurst Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16680 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16685 Air Center Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1755 Trans Central Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4301 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4401 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4501 S Pinemont Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5200 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5250 N. Sam Houston Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5500 N. Sam Houston Parkway West [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8017 Pinemont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8272 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8282 El Rio Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8301 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8303 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 850 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 860 Greens Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8801-19 & 8821-49 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8802-8824 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8825-8839 N Sam Houston Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8850-8872 Fallbrook Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 16200 Central Green Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5430 FAA Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 951 Valleyview Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Cabot III UK1B01 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1011 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1035 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1549 W Glenlake Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 901 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 925 N Hilltop Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8241 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8242 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8246 Sandy Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 19 Crows Mill Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1305 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1325 Chastain Road NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3600 Cobb International Bld NW [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Unit 1 Bear Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 650 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 680 Swedesford Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1770 Interstate Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1200 Claybrick Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1806 Highway 146th South [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11425 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11503 State Highway 225 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1701 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1801 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1842 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1902 South 16th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 640 S State Road 39 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7528 Walker Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8301 Industrial Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8500 Willard Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 875 Maxham Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8742 Congdon Hill Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7533 Industrial Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1169 Canton Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 65 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 75 Brookfield Oaks Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 126-132 Liberty Industrial Pkw [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 95-115 Liberty Industrial Pkwy [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11150 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11250 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11401 NW 134th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11450 NW 122nd Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8801 Congdon Hill Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11440 NW 122 Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 456 International Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 21 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4 S Middlesex Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 230 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 234 Moonachie Avenue [Member] [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 250 Moonachie Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 22750 Cactus Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 323 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 324 Park Knoll Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 619 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 627 Distribution Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 25 Coddington Crescent [Member] [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1775 Hillcrest Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1879 Lamont Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 350 Winmeyer Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1 Chadderton Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4000 E Airport Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1000 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10003 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10511 & 10611 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 10771 Palm Bay Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1090 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1600-1650 Central Florida Park [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1902 Cypress Lake Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2000 Park Oaks Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2202 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2212 Taft Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2256 Taft-Vineland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2351 Investors Row [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2400 South Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2412 Sand Lake Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2416 Lake Orange Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6918 Presidents Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7022 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7100 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7101 TPC Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7315 Kingspointe Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 851 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 950 Gills Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9550 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9700 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9600 Satellite Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1050 Constitution Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3 Crescent Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1200 Intrepid Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 150 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 201 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 351 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4000 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4020 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4050 S 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4300 South 26th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4701 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4751 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4775 League Island Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8th & Walnut Streets [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2626 South 7th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 563 South 63rd Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1500 S 71st Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 7205 W Buckeye Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1000 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1901 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1909 10th Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3605 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3701 East Plano Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 800 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 900 Klein Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9801 80th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 14630-14650 28th Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2920 Northwest Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5905 Trenton Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6055 Nathan Lane North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1400 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1405 SW 6th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1500 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1501 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1601 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1651 SW 5th Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2201-2215 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2250-2270 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2280-2300 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2301-2329 NW 30th Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3000 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3001-3037 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3012-3050 NW 25th Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 595 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 601 SW 13th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 605 SW 16th Terrace [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2459 Almond Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1221 N Alder Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1543 N Alder Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1920 West Baseline Rd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4101-4127 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4201-4261 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4263-4299 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4263F-N. Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4301-4335 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4337-4379 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4401-4445 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4447-4491 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4501-4549 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4551-4593 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4601-4643 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4645-4683 Carolina Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4717-4729 Eubank Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 510 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 520 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 530 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 540 Eastpark Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5600-5626 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5601-5659 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5650-5674 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5700 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5701-5799 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5800 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 4 Brittain Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5900 Eastport Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6000 Eastport Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | St Davids Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6530 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6532 Judge Adams Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 13098 George Weber Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 13220 Wilfred Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 13225 Brockton Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1070 Windham Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1550 Central Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9724 Alabama Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1135 Aviation Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5800 Technology Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8715 Bollman Place [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8501 East Raintree Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1150 Gateway Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5555 12th Avenue East [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5651 Innovation Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 12110 Champion Way [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9300 Old Scotland Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3990 Heritage Oak Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3654-3668 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3701 Illinois Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3950-3980 Swenson Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1501 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1527 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1551 102nd Avenue North [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1 Mirrlees Drive, Hazel Grove [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6900 Harbor View Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6920 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6950 Harbour View Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1516 Fryar Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3401-3409 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3502 Riga Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3505 Cragmont Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 3608 Queen Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5250 Eagle Trail Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5501-5519 Pioneer Park Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5690-5694 Crenshaw Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8110 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8130 Anderson Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9020 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9110 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9203 King Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9319 Peach Palm Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9704 Solar Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 9945 Currie Davis Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1850 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1858 E Encanto Dr [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1910 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1930 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2040 W Rio Salado Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 475 W Vaughn St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 921 South Park Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8313 West Pierce Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8591 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 8601 West Washington [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5111 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 5151 S Royal Atlanta Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Trafalgar house, Temple Court, Daten Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1400 Powis Court [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1 Kings Hill Aveune [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 42 Kings Hill Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Liberty Square, Block 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Liberty Square, Block 2 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Liberty Square, Block 3 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Liberty Square, Block 5 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 29 Liberty Square [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 1400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 300 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 400 Northpoint Parkway [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6017 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 6035 Southern Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2935 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2945 West Corporate Lakes Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 43-47 Hintz Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Worcester 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Unit 4, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Unt 3, Plot 163, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 2980 Green Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | 11430 NW 122 Street [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Operating Properties [Member] | Minimum | Plot 10A, Worcester Six, Pershore Lane [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Depreciable life (years) 5 years      
Development in Progress [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       186,909,364
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       285,259,659
Land and Improvements       0
Building and Improvements       472,169,022
Gross Amount Carried at End of Period $ 472,169,022     472,169,022
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 472,169,022      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 350 North York Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,043,130
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,507,853
Land and Improvements       0
Building and Improvements       4,550,983
Gross Amount Carried at End of Period 4,550,983     4,550,983
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,550,983      
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]        
Encumbrances       0
Initial Cost of Land       488,529
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,065,131
Land and Improvements       0
Building and Improvements       4,553,660
Gross Amount Carried at End of Period 4,553,660     4,553,660
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,553,660      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 3535 N Houston School Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,014,293
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       48,978,234
Land and Improvements       0
Building and Improvements       53,992,527
Gross Amount Carried at End of Period 53,992,527     53,992,527
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 53,992,527      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 1912 16th St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,337,516
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       365,516
Land and Improvements       0
Building and Improvements       1,703,032
Gross Amount Carried at End of Period 1,703,032     1,703,032
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,703,032      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 160 and 180 Dulty's Lane Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,920,365
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,133,984
Land and Improvements       0
Building and Improvements       16,054,349
Gross Amount Carried at End of Period 16,054,349     16,054,349
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 16,054,349      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 12830 Virklet Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       298,624
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,283,630
Land and Improvements       0
Building and Improvements       4,582,253
Gross Amount Carried at End of Period 4,582,253     4,582,253
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,582,253      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | Widnes - Unit 1 [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       703,253
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,413,864
Land and Improvements       0
Building and Improvements       3,117,117
Gross Amount Carried at End of Period 3,117,117     3,117,117
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,117,117      
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]        
Encumbrances       0
Initial Cost of Land       16,338
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,183,126
Land and Improvements       0
Building and Improvements       2,199,464
Gross Amount Carried at End of Period 2,199,464     2,199,464
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,199,464      
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]        
Encumbrances       0
Initial Cost of Land       3,875,203
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       17,667,379
Land and Improvements       0
Building and Improvements       21,542,582
Gross Amount Carried at End of Period 21,542,582     21,542,582
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,542,582      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 1401 Rankin Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,895,650
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,628,113
Land and Improvements       0
Building and Improvements       18,523,763
Gross Amount Carried at End of Period 18,523,763     18,523,763
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 18,523,763      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 15515 Woodham Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       21,665,705
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       28,161,131
Land and Improvements       0
Building and Improvements       49,826,836
Gross Amount Carried at End of Period 49,826,836     49,826,836
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 49,826,836      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 5350 Frye Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,589,923
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,726,004
Land and Improvements       0
Building and Improvements       12,315,927
Gross Amount Carried at End of Period 12,315,927     12,315,927
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,315,927      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 120 Midway Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,410,100
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       24,034,026
Land and Improvements       0
Building and Improvements       29,444,126
Gross Amount Carried at End of Period 29,444,126     29,444,126
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 29,444,126      
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]        
Encumbrances       0
Initial Cost of Land       1,420,014
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       5,688,787
Land and Improvements       0
Building and Improvements       7,108,801
Gross Amount Carried at End of Period 7,108,801     7,108,801
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,108,801      
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]        
Encumbrances       0
Initial Cost of Land       4,378,890
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       22,599,236
Land and Improvements       0
Building and Improvements       26,978,126
Gross Amount Carried at End of Period 26,978,126     26,978,126
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 26,978,126      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 1901 Wharton Weems Blvd [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,634,375
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       435,322
Land and Improvements       0
Building and Improvements       3,069,697
Gross Amount Carried at End of Period 3,069,697     3,069,697
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,069,697      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 11230 Nw 122 St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,226,348
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,823,058
Land and Improvements       0
Building and Improvements       12,049,406
Gross Amount Carried at End of Period 12,049,406     12,049,406
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,049,406      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 11240 NW 122 St [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,226,348
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       10,261,112
Land and Improvements       0
Building and Improvements       15,487,460
Gross Amount Carried at End of Period 15,487,460     15,487,460
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,487,460      
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]        
Encumbrances       0
Initial Cost of Land       5,790,968
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,257,013
Land and Improvements       0
Building and Improvements       7,047,981
Gross Amount Carried at End of Period 7,047,981     7,047,981
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 7,047,981      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | Liberty 196 Brackmills [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,272,742
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,991,279
Land and Improvements       0
Building and Improvements       20,264,021
Gross Amount Carried at End of Period 20,264,021     20,264,021
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 20,264,021      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 2300 Liberty Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       9,549,414
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,247,326
Land and Improvements       0
Building and Improvements       10,796,740
Gross Amount Carried at End of Period 10,796,740     10,796,740
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 10,796,740      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 2800 Liberty Drive [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,478,785
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       342,628
Land and Improvements       0
Building and Improvements       11,821,413
Gross Amount Carried at End of Period 11,821,413     11,821,413
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,821,413      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 1383 S Cucamonga Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,773,327
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,249,141
Land and Improvements       0
Building and Improvements       8,022,468
Gross Amount Carried at End of Period 8,022,468     8,022,468
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 8,022,468      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 400 Rouse Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       10,514,720
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,088,179
Land and Improvements       0
Building and Improvements       12,602,899
Gross Amount Carried at End of Period 12,602,899     12,602,899
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 12,602,899      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 1250 S 71st Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,587,584
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       10,854,851
Land and Improvements       0
Building and Improvements       14,442,435
Gross Amount Carried at End of Period 14,442,435     14,442,435
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,442,435      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 2000 W Baseline Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       11,706,478
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       11,142,119
Land and Improvements       0
Building and Improvements       22,848,597
Gross Amount Carried at End of Period 22,848,597     22,848,597
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 22,848,597      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 855 W Valley Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       24,722,726
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,779,395
Land and Improvements       0
Building and Improvements       27,502,121
Gross Amount Carried at End of Period 27,502,121     27,502,121
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 27,502,121      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 520 East Orange Shadow Road [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       14,742,703
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       16,750,766
Land and Improvements       0
Building and Improvements       31,493,469
Gross Amount Carried at End of Period 31,493,469     31,493,469
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 31,493,469      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 42 Kings Hill Ave [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,237,847
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       8,358,786
Land and Improvements       0
Building and Improvements       9,596,633
Gross Amount Carried at End of Period 9,596,633     9,596,633
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 9,596,633      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | 6043 Southern Boulevard [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,741,040
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       3,382,226
Land and Improvements       0
Building and Improvements       6,123,266
Gross Amount Carried at End of Period 6,123,266     6,123,266
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,123,266      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Development in Progress [Member] | Worcester Plot 2A [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       646,426
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,860,444
Land and Improvements       0
Building and Improvements       2,506,870
Gross Amount Carried at End of Period 2,506,870     2,506,870
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,506,870      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       224,063,793
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       72,180,087
Land and Improvements       296,243,880
Building and Improvements       0
Gross Amount Carried at End of Period 296,243,880     296,243,880
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 296,243,880      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Camden Town Center Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,384,543
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (1,815,511)
Land and Improvements       1,569,032
Building and Improvements       0
Gross Amount Carried at End of Period 1,569,032     1,569,032
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,569,032      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Randolph Street Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       1,758,528
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       0
Land and Improvements       1,758,528
Building and Improvements       0
Gross Amount Carried at End of Period 1,758,528     1,758,528
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,758,528      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Mountain Creek Business Park L [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       7,984,928
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       6,952,870
Land and Improvements       14,937,798
Building and Improvements       0
Gross Amount Carried at End of Period 14,937,798     14,937,798
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 14,937,798      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | 4030 S State Road 7 Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       14,727,819
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       488,777
Land and Improvements       15,216,596
Building and Improvements       0
Gross Amount Carried at End of Period 15,216,596     15,216,596
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 15,216,596      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Holly Lane North Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       889,205
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       143,710
Land and Improvements       1,032,915
Building and Improvements       0
Gross Amount Carried at End of Period 1,032,915     1,032,915
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,032,915      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | French Lake Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       13,513,632
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       7,684,117
Land and Improvements       21,197,749
Building and Improvements       0
Gross Amount Carried at End of Period 21,197,749     21,197,749
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,197,749      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Flying Cloud Drive Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       2,051,631
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,949,097
Land and Improvements       4,000,728
Building and Improvements       0
Gross Amount Carried at End of Period 4,000,728     4,000,728
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,000,728      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Camelback 303 Business Center Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       16,857,556
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,435,684
Land and Improvements       21,293,240
Building and Improvements       0
Gross Amount Carried at End of Period 21,293,240     21,293,240
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 21,293,240      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Pleasant Ridge Road Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       564,535
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,931,704
Land and Improvements       3,496,239
Building and Improvements       0
Gross Amount Carried at End of Period 3,496,239     3,496,239
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 3,496,239      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Ridge Road Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
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
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 | Interwood Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,160,668
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       32,647
Land and Improvements       5,193,315
Building and Improvements       0
Gross Amount Carried at End of Period 5,193,315     5,193,315
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,193,315      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Richey Road Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       12,630,951
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (11,522,400)
Land and Improvements       1,108,551
Building and Improvements       0
Gross Amount Carried at End of Period 1,108,551     1,108,551
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 1,108,551      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Cabin Branch Road Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       507,337
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,851,968
Land and Improvements       2,359,305
Building and Improvements       0
Gross Amount Carried at End of Period 2,359,305     2,359,305
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,359,305      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Kent County, UK [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       0
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       24,724,274
Land and Improvements       24,724,274
Building and Improvements       0
Gross Amount Carried at End of Period 24,724,274     24,724,274
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 24,724,274      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Port Crossing Commerce Center Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       5,073,341
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       316,899
Land and Improvements       5,390,240
Building and Improvements       0
Gross Amount Carried at End of Period 5,390,240     5,390,240
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,390,240      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Commodore Business Park [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       792,118
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,456,064
Land and Improvements       2,248,182
Building and Improvements       0
Gross Amount Carried at End of Period 2,248,182     2,248,182
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 2,248,182      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Paramount Boulevard Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       33,689,684
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       197,422
Land and Improvements       33,887,106
Building and Improvements       0
Gross Amount Carried at End of Period 33,887,106     33,887,106
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 33,887,106      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Spring Creek Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       36,615,601
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       12,137,495
Land and Improvements       48,753,096
Building and Improvements       0
Gross Amount Carried at End of Period 48,753,096     48,753,096
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 48,753,096      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Miami International Tradeport Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       8,359,177
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       9,001,589
Land and Improvements       17,360,766
Building and Improvements       0
Gross Amount Carried at End of Period 17,360,766     17,360,766
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 17,360,766      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | 557 Nazareth Pike Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,667,646
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       668,506
Land and Improvements       5,336,152
Building and Improvements       0
Gross Amount Carried at End of Period 5,336,152     5,336,152
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 5,336,152      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | 357 Wilson Avenue Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       12,882,076
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       145,473
Land and Improvements       13,027,549
Building and Improvements       0
Gross Amount Carried at End of Period 13,027,549     13,027,549
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 13,027,549      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Century Commerce Center Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       17,347,131
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       1,915,008
Land and Improvements       19,262,139
Building and Improvements       0
Gross Amount Carried at End of Period 19,262,139     19,262,139
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 19,262,139      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Southern Boulevard Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       6,628,239
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       4,838,777
Land and Improvements       11,467,016
Building and Improvements       0
Gross Amount Carried at End of Period 11,467,016     11,467,016
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 11,467,016      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Buckeye Logistics Center West Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,193,865
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       2,331,154
Land and Improvements       6,525,019
Building and Improvements       0
Gross Amount Carried at End of Period 6,525,019     6,525,019
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 6,525,019      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Walkins Street and 48th Avenue Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       4,078,812
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       247,597
Land and Improvements       4,326,409
Building and Improvements       0
Gross Amount Carried at End of Period 4,326,409     4,326,409
Accumulated Depreciation    
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,326,409      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation      
Land Held for Development | Woodlands Center Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
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
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 | Suffolk Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
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
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 | 6119 W. Linebaugh Avenue [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       180,136
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       (105,136)
Land and Improvements       75,000
Building and Improvements       0
Gross Amount Carried at End of Period 75,000     75,000
Accumulated Depreciation 0     0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 75,000      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation 0      
Land Held for Development | Legacy Park Land [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances       0
Initial Cost of Land       3,289,423
Initial Cost of Buildings       0
Costs Capitalized Subsequent to Acquisition       910,577
Land and Improvements       4,200,000
Building and Improvements       0
Gross Amount Carried at End of Period 4,200,000     4,200,000
Accumulated Depreciation 0     $ 0
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]        
Real Estate, Gross 4,200,000      
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]        
Real Estate Accumulated Depreciation $ 0