Schedule III (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Real Estate, Gross	$ 4,907,973,000		$ 4,838,869,000	$ 4,758,471,000
Real Estate Additions	423,924,000		108,760,000	164,580,000
Real Estate, Cost of Real Estate Sold	(49,712,000)		(39,656,000)	(84,182,000)
Real Estate, Gross	5,282,185,000		4,907,973,000	4,838,869,000
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Real Estate Accumulated Depreciation	938,044,000		836,146,000	733,688,000
Real Estate Accumulated Depreciation, Depreciation Expense	144,284,000		147,299,000	144,548,000
Real Estate Accumulated Depreciation, Real Estate Sold	(20,098,000)		(45,401,000)	(42,090,000)
Real Estate Accumulated Depreciation	1,062,230,000		938,044,000	836,146,000
Total Real Estate [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Amount of Encumbrances	40,945,700
Real Estate and Accumulated Depreciation, Initial Cost of Land	958,231,628
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,763,612,230
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,560,341,147
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,076,158,825
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,206,026,180
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,282,185,005
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,062,229,638
Metropolitan Life, LaSalle Bank, Allianz and John Hancock [Member]
Real Estate and Accumulated Depreciation [Line Items]
Net Book Value of Collateralized Real Estate Properties	238,800,000
Operating Properties [Member] | 8212 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8212 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	820,882
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,322,720
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	37,906
Real Estate and Accumulated Depreciation, Carrying Amount of Land	820,882
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,360,627
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,181,509
Real Estate and Accumulated Depreciation, Accumulated Depreciation	858,971
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2955 Xenium Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2955 Xenium Lane
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	151,238
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,370,140
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	506,303
Real Estate and Accumulated Depreciation, Carrying Amount of Land	151,238
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,876,443
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,027,681
Real Estate and Accumulated Depreciation, Accumulated Depreciation	748,084
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 701 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	701 Distribution Drive
Real Estate and Accumulated Depreciation, Location of Property	Morrisville, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,300,889
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,313,226
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	207,183
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,301,211
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,520,088
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,821,298
Real Estate and Accumulated Depreciation, Accumulated Depreciation	699,641
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300 Technology Drive
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	368,626
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,350,184
Real Estate and Accumulated Depreciation, Carrying Amount of Land	374,497
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,344,313
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,718,810
Real Estate and Accumulated Depreciation, Accumulated Depreciation	821,773
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6600 Southpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6600 Southpoint Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	998,432
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,055,727
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	903,983
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,002,704
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,955,438
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,958,142
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,159,755
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 120 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	120 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	533,142
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,830,515
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,840,146
Real Estate and Accumulated Depreciation, Carrying Amount of Land	558,142
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,645,661
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,203,803
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,201,528
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1980
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 116 Pleasant Ridge Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	116 Pleasant Ridge Road
Real Estate and Accumulated Depreciation, Location of Property	Greenville, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,547,811
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	14,066,208
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,712,683
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,901,337
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,614,020
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,019,550
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1501 Perryman Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1501 Perryman Road
Real Estate and Accumulated Depreciation, Location of Property	Aberdeen, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,813,324
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,874,059
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,458,440
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,816,839
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	23,328,984
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	29,145,823
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,120,023
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,722,683
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,922,645
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	451,444
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,722,683
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	19,374,089
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	24,096,772
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,585,402
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 400 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	400 Nestle Way
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	17,866,621
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,065,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	27,420,765
Real Estate and Accumulated Depreciation, Carrying Amount of Land	8,184,096
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	27,302,169
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	35,486,265
Real Estate and Accumulated Depreciation, Accumulated Depreciation	11,449,353
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7248 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7248 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,670,849
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,307,408
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,455,487
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,670,673
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	17,763,070
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,433,744
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,100,304
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7339 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7339 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,187,776
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,722,946
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,197,447
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,713,275
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,910,723
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,773,766
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7437 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7437 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	717,488
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,022,413
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,042,952
Real Estate and Accumulated Depreciation, Carrying Amount of Land	726,651
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,056,202
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,782,852
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,853,855
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1976
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 700 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	700 Nestle Way
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,473,120
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	20,069,956
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,174,970
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	19,368,105
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,543,076
Real Estate and Accumulated Depreciation, Accumulated Depreciation	7,609,194
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 794 Roble Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	794 Roble Road
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,147,541
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,088,041
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,183,790
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,147,541
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,271,832
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,419,373
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,013,590
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8014 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8014 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,019,258
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,764,666
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,645,117
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,138,806
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,783,924
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,864,903
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 705 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	705 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	10,594,027
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	27,998,382
Real Estate and Accumulated Depreciation, Carrying Amount of Land	10,596,767
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	27,995,642
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	38,592,409
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,954,725
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 651 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	651 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,308,646
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	17,823,342
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,308,646
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	17,823,342
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	22,131,987
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,394,063
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8150 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8150 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,564,167
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,388,663
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,571,466
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,381,365
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,952,830
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,124,888
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8250 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8250 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,025,667
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,339,264
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,035,854
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,329,076
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,364,931
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,419,826
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 650 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	650 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,208,248
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	31,373,290
Real Estate and Accumulated Depreciation, Carrying Amount of Land	9,961,788
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	26,619,750
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	36,581,539
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,100,156
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7165 Ambassador Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7165 Ambassador Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	792,999
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,533,868
Real Estate and Accumulated Depreciation, Carrying Amount of Land	804,848
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,522,019
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,326,867
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,303,428
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 250 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	250 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,599,936
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	12,099,145
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,176,159
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,717,733
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,157,508
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,875,241
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,861,088
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8400 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8400 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,725,948
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	27,128,012
Real Estate and Accumulated Depreciation, Carrying Amount of Land	7,521,211
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	26,332,749
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	33,853,961
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,821,606
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6560 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6560 Stonegate Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	458,281
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,805,110
Real Estate and Accumulated Depreciation, Carrying Amount of Land	458,945
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,804,447
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,263,391
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,660,545
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6370 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6370 Hedgewood Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	540,795
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,217,414
Real Estate and Accumulated Depreciation, Carrying Amount of Land	541,459
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,216,750
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,758,209
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,648,666
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6390 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6390 Hedgewood Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	707,203
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,934,130
Real Estate and Accumulated Depreciation, Carrying Amount of Land	707,867
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,933,466
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,641,333
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,458,999
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6350 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6350 Hedgewood Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	360,027
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,028,297
Real Estate and Accumulated Depreciation, Carrying Amount of Land	560,691
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,827,633
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,388,324
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,874,910
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6330 Hedgewood Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6330 Hedgewood Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	531,268
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,967,420
Real Estate and Accumulated Depreciation, Carrying Amount of Land	532,047
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,966,642
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,498,688
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,854,456
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6580 Snowdrift Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6580 Snowdrift Road
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	388,328
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,503,320
Real Estate and Accumulated Depreciation, Carrying Amount of Land	389,081
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,502,567
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,891,648
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,007,984
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6540 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6540 Stonegate Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	422,042
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,925,217
Real Estate and Accumulated Depreciation, Carrying Amount of Land	422,730
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,924,530
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,347,259
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,338,921
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6520 Stonegate Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6520 Stonegate Drive
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	453,315
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,689,706
Real Estate and Accumulated Depreciation, Carrying Amount of Land	484,361
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,658,661
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,143,021
Real Estate and Accumulated Depreciation, Accumulated Depreciation	779,854
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7620 Cetronia Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7620 Cetronia Road
Real Estate and Accumulated Depreciation, Location of Property	Allentown, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,091,806
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,851,456
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	258,140
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,093,724
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,107,678
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,201,402
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,681,318
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 180,190 Cochrane Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	180,190 Cochrane Drive
Real Estate and Accumulated Depreciation, Location of Property	Annapolis, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,670,256
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	23,125,713
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,752,293
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	23,043,676
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	26,795,969
Real Estate and Accumulated Depreciation, Accumulated Depreciation	12,250,406
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4606 Richlynn Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4606 Richlynn Drive
Real Estate and Accumulated Depreciation, Location of Property	Belcamp, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	299,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,818,861
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	712,787
Real Estate and Accumulated Depreciation, Carrying Amount of Land	299,600
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,531,649
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,831,249
Real Estate and Accumulated Depreciation, Accumulated Depreciation	787,520
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 74 West Broad Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	74 West Broad Street
Real Estate and Accumulated Depreciation, Location of Property	Bethlehem, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,096,127
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	14,230,904
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,099,079
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,227,953
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,327,032
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,885,891
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6601-6625 W. 78th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6601-6625 W. 78th Street
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,263,060
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	39,321,294
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,310,246
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	39,274,108
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	41,584,354
Real Estate and Accumulated Depreciation, Accumulated Depreciation	13,053,858
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6161 Green Valley Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6161 Green Valley Drive
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	740,378
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,311,602
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,114,197
Real Estate and Accumulated Depreciation, Carrying Amount of Land	709,961
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,456,216
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,166,177
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,412,320
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1992
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10801 Nesbitt Avenue South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10801 Nesbitt Avenue South
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	784,577
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,603,519
Real Estate and Accumulated Depreciation, Carrying Amount of Land	786,382
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,601,714
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,388,096
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,022,562
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5775 West Old Shakopee Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5775 West Old Shakopee Road
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,052,018
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,849,649
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,611,411
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,060,644
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,452,433
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,513,078
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,630,370
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5715 Old Shakopee Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5715 Old Shakopee Road West
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,263,226
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,360,782
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,012,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,264,758
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,371,607
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,636,365
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,113,304
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5735 Old Shakopee Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5735 Old Shakopee Road West
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,263,226
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,360,782
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,024,178
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,264,758
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,383,428
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,648,186
Real Estate and Accumulated Depreciation, Accumulated Depreciation	905,911
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5705 Old Shakopee Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5705 Old Shakopee Road
Real Estate and Accumulated Depreciation, Location of Property	Bloomington, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,113,223
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,520,730
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,148,571
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,485,383
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,633,953
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,089,350
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 951 Broken Sound Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	951 Broken Sound Parkway
Real Estate and Accumulated Depreciation, Location of Property	Boca Raton, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,426,251
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,098,952
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,805,060
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,426,251
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,904,012
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,330,263
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,017,037
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 777 Yamato Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	777 Yamato Road
Real Estate and Accumulated Depreciation, Location of Property	Boca Raton, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,101,247
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,077,347
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,921,455
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,501,247
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	21,598,803
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	26,100,049
Real Estate and Accumulated Depreciation, Accumulated Depreciation	7,460,852
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 750 Park of Commerce Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	750 Park of Commerce Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Boca Raton, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,430,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	22,128,524
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,473,406
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	22,085,118
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	24,558,524
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,439,006
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 400 Boulder Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	400 Boulder Drive
Real Estate and Accumulated Depreciation, Location of Property	Breinigsville, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,408,721
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,865,575
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,543,146
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,408,721
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,950,266
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 860 Nestle Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	860 Nestle Way
Real Estate and Accumulated Depreciation, Location of Property	Breinigsville, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,118,881
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,885,486
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,099,680
Real Estate and Accumulated Depreciation, Carrying Amount of Land	8,118,881
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	25,985,166
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	34,104,047
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,685,394
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8201 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8201 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Breinigsville, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,089,719
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,328,910
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,222,168
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,196,461
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,418,629
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,199,549
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8500 Industrial Bouldvard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8500 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Breinigsville, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,752,708
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	39,797,921
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,511,499
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	37,039,130
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	48,550,629
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,719,708
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 602 Heron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	602 Heron Drive
Real Estate and Accumulated Depreciation, Location of Property	Bridgeport, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	524,728
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,240,478
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,650
Real Estate and Accumulated Depreciation, Carrying Amount of Land	524,728
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,248,128
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,772,856
Real Estate and Accumulated Depreciation, Accumulated Depreciation	772,071
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1485 W Commerce Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1485 W. Commerce Avenue
Real Estate and Accumulated Depreciation, Location of Property	Carlisle, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,249,868
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,886,039
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,241,825
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,095,262
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,282,471
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,377,733
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,402,664
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 95 Kriner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	95 Kriner Road
Real Estate and Accumulated Depreciation, Location of Property	Chambersburg, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,695,501
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	34,494,348
Real Estate and Accumulated Depreciation, Carrying Amount of Land	9,407,871
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	33,781,978
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	43,189,849
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,329,297
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9000 109th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9000 109th Street
Real Estate and Accumulated Depreciation, Location of Property	Champlin, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,251,043
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,662,995
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,251,043
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,662,995
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,914,038
Real Estate and Accumulated Depreciation, Accumulated Depreciation	119,723
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12810 Virkler Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12810 Virkler Drive
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	475,368
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,367,586
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	679,827
Real Estate and Accumulated Depreciation, Carrying Amount of Land	476,262
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,046,518
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,522,780
Real Estate and Accumulated Depreciation, Accumulated Depreciation	35,229
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3005 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3005 Crosspoint Center Lane
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,990,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,561,540
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	50,440
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,990,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,611,980
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,601,980
Real Estate and Accumulated Depreciation, Accumulated Depreciation	46,392
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4045 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4045 Perimeter West Drive
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,418,928
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,511,050
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,418,928
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,511,050
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,929,978
Real Estate and Accumulated Depreciation, Accumulated Depreciation	129,136
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2700 Hutchinson McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2700 Hutchinson McDonald Road
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	912,500
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,721,259
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,854
Real Estate and Accumulated Depreciation, Carrying Amount of Land	912,500
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,723,113
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,635,613
Real Estate and Accumulated Depreciation, Accumulated Depreciation	29,930
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3000 Crosspoint Center Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3000 Crosspoint Center Lane
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,831,250
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	10,779,412
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	49,915
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,831,250
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,829,326
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,660,576
Real Estate and Accumulated Depreciation, Accumulated Depreciation	68,123
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2801 Hutchinson McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2801 Hutchinson McDonald Road
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,065,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,975,250
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,064
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,065,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,977,315
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,042,315
Real Estate and Accumulated Depreciation, Accumulated Depreciation	42,560
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2701 Hutchinson McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2701 Hutchinson McDonald Road
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,275,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,649,750
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,998
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,275,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,651,748
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,926,748
Real Estate and Accumulated Depreciation, Accumulated Depreciation	33,806
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2730 Hutchinson McDonald Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2730 Hutchinson McDonald Road
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,878,750
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	10,129,499
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,057
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,878,750
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,132,556
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,011,306
Real Estate and Accumulated Depreciation, Accumulated Depreciation	59,461
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4525 Statesville Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4525 Statesville Road
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	841,250
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,279,315
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,217
Real Estate and Accumulated Depreciation, Carrying Amount of Land	841,250
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,280,532
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,121,782
Real Estate and Accumulated Depreciation, Accumulated Depreciation	31,795
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8910 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8910 Pioneer Avenue
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	527,873
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,959,206
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	527,873
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,959,206
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,487,079
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8916 Pioneer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8916 Pioneer Avenue
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	557,730
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,785,333
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	557,730
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,785,333
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,343,063
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1309 Executive Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1309 Executive Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	926,125
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,098,066
Real Estate and Accumulated Depreciation, Carrying Amount of Land	955,374
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,068,817
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,024,191
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,374,379
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1305 Executive Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1305 Executive Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	861,020
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,739,120
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,129,850
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,470,290
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,600,140
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,101,570
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1313 Executive Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1313 Executive Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,180,036
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,629,615
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,708,050
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,101,602
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,809,652
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,109,869
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 500 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	500 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	864,150
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,427,285
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	497,821
Real Estate and Accumulated Depreciation, Carrying Amount of Land	866,609
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,922,648
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,789,257
Real Estate and Accumulated Depreciation, Accumulated Depreciation	974,573
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 700 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	700 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	5,961,747
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,950,375
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,236,994
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	647,606
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,951,135
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,883,840
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,834,975
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,930,522
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 501 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	501 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,202,556
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,975,538
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,528,763
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,292,273
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,414,584
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,706,857
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,330,395
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 505 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	505 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,292,062
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,456,515
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,289,521
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,292,254
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,745,843
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,038,098
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,493,630
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 510 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	510 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,012,149
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,546,882
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	872,187
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,014,689
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,416,530
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,431,219
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,582,457
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1301 Executive Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1301 Executive Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,160,743
Real Estate and Accumulated Depreciation, Carrying Amount of Land	970,151
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,190,592
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,160,743
Real Estate and Accumulated Depreciation, Accumulated Depreciation	864,245
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 676 Independence Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	676 Independence Parkway
Real Estate and Accumulated Depreciation, Location of Property	Chesapeake, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,527,303
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	11,291,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,562,903
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,255,684
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,818,587
Real Estate and Accumulated Depreciation, Accumulated Depreciation	685,070
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6230 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6230 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Colombia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,004,075
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,861,617
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,746,455
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,119,237
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,865,692
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,647,141
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9755 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9755 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,917,094
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,959,075
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,592,908
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,922,382
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,546,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,469,076
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,110,013
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7178 - 7180 Columbia Gateway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7178-80 Columbia Gateway
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,569,237
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,786,887
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,942,434
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,571,105
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,727,452
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,298,558
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,277,887
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9770 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9770 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	341,663
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,033,309
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,876,157
Real Estate and Accumulated Depreciation, Carrying Amount of Land	341,663
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,909,466
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,251,129
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,928,403
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9780 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9780 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	218,542
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,940,636
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	669,179
Real Estate and Accumulated Depreciation, Carrying Amount of Land	218,542
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,609,815
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,828,356
Real Estate and Accumulated Depreciation, Accumulated Depreciation	970,654
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9790 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9790 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	243,791
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,164,094
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	640,811
Real Estate and Accumulated Depreciation, Carrying Amount of Land	243,791
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,804,905
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,048,695
Real Estate and Accumulated Depreciation, Accumulated Depreciation	956,301
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9810 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9810 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	266,684
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,366,901
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	832,049
Real Estate and Accumulated Depreciation, Carrying Amount of Land	266,684
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,198,950
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,465,634
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,062,186
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9800 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9800 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	299,099
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,654,069
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	658,514
Real Estate and Accumulated Depreciation, Carrying Amount of Land	299,099
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,312,583
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,611,682
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,210,388
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9820 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9820 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	237,779
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,110,835
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	940,798
Real Estate and Accumulated Depreciation, Carrying Amount of Land	237,779
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,051,633
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,289,412
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,151,870
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9830 Patuxent Woods Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9830 Patuxent Woods Drive
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	296,262
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,628,933
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	582,878
Real Estate and Accumulated Depreciation, Carrying Amount of Land	296,262
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,211,811
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,508,073
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,189,447
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6250 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6250 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	958,105
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,618,313
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,295,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,281,418
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,576,418
Real Estate and Accumulated Depreciation, Accumulated Depreciation	946,952
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6200 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6200 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	958,105
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,770,704
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,295,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,433,809
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,728,809
Real Estate and Accumulated Depreciation, Accumulated Depreciation	954,540
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6210 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6210 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	958,105
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,948,851
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,307,300
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,599,656
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,906,956
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,159,574
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6240 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6240 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	958,105
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,990,310
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,599,259
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,349,156
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,948,415
Real Estate and Accumulated Depreciation, Accumulated Depreciation	738,247
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6220 Old Dobbin Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6220 Old Dobbin Lane
Real Estate and Accumulated Depreciation, Location of Property	Columbia, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,865,848
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,741,067
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,166,951
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,439,964
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,606,915
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,181,084
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1250 Hall Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1250 Hall Court
Real Estate and Accumulated Depreciation, Location of Property	Deer Park, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	2,835,796
Real Estate and Accumulated Depreciation, Initial Cost of Land	829,570
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,778,327
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	47,398
Real Estate and Accumulated Depreciation, Carrying Amount of Land	831,611
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,823,685
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,655,296
Real Estate and Accumulated Depreciation, Accumulated Depreciation	670,275
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 170 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	170 Parkway West
Real Estate and Accumulated Depreciation, Location of Property	Duncan, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	598,348
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,643,756
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	133,029
Real Estate and Accumulated Depreciation, Carrying Amount of Land	598,918
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,776,215
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,375,133
Real Estate and Accumulated Depreciation, Accumulated Depreciation	652,306
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 190 Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	190 Parkway West
Real Estate and Accumulated Depreciation, Location of Property	Duncan, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	551,663
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,310,993
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	209,022
Real Estate and Accumulated Depreciation, Carrying Amount of Land	552,211
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,519,466
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,071,678
Real Estate and Accumulated Depreciation, Accumulated Depreciation	624,478
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 265 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	265 Parkway East
Real Estate and Accumulated Depreciation, Location of Property	Duncan, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	901,444
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,751,389
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	18,391
Real Estate and Accumulated Depreciation, Carrying Amount of Land	902,374
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,768,850
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,671,224
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,109,277
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 285 Parkway East [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	285 Parkway East
Real Estate and Accumulated Depreciation, Location of Property	Duncan, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	975,433
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,851,990
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	318,001
Real Estate and Accumulated Depreciation, Carrying Amount of Land	976,393
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,169,031
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,145,424
Real Estate and Accumulated Depreciation, Accumulated Depreciation	882,096
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3255 Neil Armstrong Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3255 Neil Armstrong Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Eagan, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,131,017
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,366,266
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,103,860
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,393,423
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,497,283
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,104,644
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3711 Kennebec Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3711 Kennebec Drive
Real Estate and Accumulated Depreciation, Location of Property	Eagan, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	999,702
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,042,589
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,748
Real Estate and Accumulated Depreciation, Carrying Amount of Land	999,702
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,047,338
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,047,040
Real Estate and Accumulated Depreciation, Accumulated Depreciation	51,924
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10301-10305 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10301-10305 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	120,622
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,085,226
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	399,773
Real Estate and Accumulated Depreciation, Carrying Amount of Land	118,300
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,487,321
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,605,621
Real Estate and Accumulated Depreciation, Accumulated Depreciation	565,142
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10321 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10321 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	145,198
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,305,700
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	460,783
Real Estate and Accumulated Depreciation, Carrying Amount of Land	142,399
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,769,282
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,911,681
Real Estate and Accumulated Depreciation, Accumulated Depreciation	527,279
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10333 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10333 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	110,746
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	995,868
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	292,038
Real Estate and Accumulated Depreciation, Carrying Amount of Land	108,610
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,290,042
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,398,652
Real Estate and Accumulated Depreciation, Accumulated Depreciation	500,671
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10349-10357 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10349-10357 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	275,903
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,481,666
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	523,647
Real Estate and Accumulated Depreciation, Carrying Amount of Land	270,584
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,010,632
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,281,215
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,183,599
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10365-10375 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10365-10375 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	291,077
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,618,194
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	417,055
Real Estate and Accumulated Depreciation, Carrying Amount of Land	285,464
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,040,862
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,326,326
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,204,622
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10393-10394 West 70th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10393-10394 West 70th Street
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	269,618
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,423,318
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	861,035
Real Estate and Accumulated Depreciation, Carrying Amount of Land	264,419
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,289,552
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,553,971
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,252,741
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10400 Viking Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10400 Viking Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,912,391
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	22,507,711
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,938,372
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	22,481,730
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	25,420,102
Real Estate and Accumulated Depreciation, Accumulated Depreciation	8,061,772
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6321-6325 Bury Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6321-6325 Bury Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	462,876
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,151,790
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,084,902
Real Estate and Accumulated Depreciation, Carrying Amount of Land	462,876
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,236,692
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,699,568
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,808,107
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7075 Flying Cloud Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7075 Flying Cloud Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	10,232,831
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	10,855,851
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	53,337
Real Estate and Accumulated Depreciation, Carrying Amount of Land	10,243,977
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,898,042
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	21,142,019
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,317,734
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7078 Shady Oak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7078 Shady Oak Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	343,093
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,085,795
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,486,581
Real Estate and Accumulated Depreciation, Carrying Amount of Land	336,481
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,578,988
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,915,469
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,443,276
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7400 Flying Cloud Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7400 Flying Cloud Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	195,982
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,762,027
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,456,974
Real Estate and Accumulated Depreciation, Carrying Amount of Land	773,243
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,641,740
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,414,983
Real Estate and Accumulated Depreciation, Accumulated Depreciation	780,581
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7615 Smetana Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7615 Smetana Lane
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,011,517
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,510,179
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,000,555
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,521,141
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,521,696
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,056,639
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7625 Smetana Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7625 Smetana Lane
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,500,641
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,987,320
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,916,609
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,571,353
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,487,962
Real Estate and Accumulated Depreciation, Accumulated Depreciation	872,417
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7660-7716 Golden Triangle Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7660-7716 Golden Triangle Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	568,706
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,115,177
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,274,443
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,289,215
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,669,111
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,958,326
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,545,665
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7695-7699 Anagram Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7695-7699 Anagram Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	760,525
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,254,758
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	623,355
Real Estate and Accumulated Depreciation, Carrying Amount of Land	760,525
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,878,113
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,638,638
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,650,469
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7777 Golden Triangle Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7777 Golden Triangle Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	993,101
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,136,862
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,151,598
Real Estate and Accumulated Depreciation, Carrying Amount of Land	993,101
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,288,460
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,281,561
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,110,177
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7800 Equitable Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7800 Equitable Drive
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,188,525
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,788,762
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	128,371
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,188,525
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,917,133
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,105,657
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,350,117
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1993
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7905 Fuller Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7905 Fuller Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,229,862
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,075,167
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,980,136
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,230,965
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,054,200
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,285,165
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,278,049
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1994
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8855 Columbine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8855 Columbine Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,400,925
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,226,016
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,599,757
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,027,185
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,626,941
Real Estate and Accumulated Depreciation, Accumulated Depreciation	965,066
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8911 Columbine Road (B2) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8911 Columbine Road (B2)
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	916,687
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,766,331
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,718,407
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,964,611
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,683,018
Real Estate and Accumulated Depreciation, Accumulated Depreciation	865,194
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8937 Columbine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8937 Columbine Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,325,829
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,191,274
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,739,966
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,777,137
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,517,103
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,072,175
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8967 Columbine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8967 Columbine Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,450,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,575,107
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,450,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,575,107
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,025,107
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,222,998
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8995 Columbine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8995 Columbine Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,087,594
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,664,053
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,055,296
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,696,352
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,751,648
Real Estate and Accumulated Depreciation, Accumulated Depreciation	844,069
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9023 Columbine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9023 Columbine Road
Real Estate and Accumulated Depreciation, Location of Property	Eden Prairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,956,273
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,873,578
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,956,273
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,873,578
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,829,851
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,789,011
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7351 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7351 Coca Cola Drive
Real Estate and Accumulated Depreciation, Location of Property	Elkridge, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,897,044
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,161,614
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,023,417
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,035,242
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,058,659
Real Estate and Accumulated Depreciation, Accumulated Depreciation	873,352
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 21705-21707 Mississippi Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	21705-21707 Mississippi Street
Real Estate and Accumulated Depreciation, Location of Property	Elwood, IL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	10,594,259
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	30,329,802
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	88,926
Real Estate and Accumulated Depreciation, Carrying Amount of Land	10,594,259
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	30,418,728
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	41,012,988
Real Estate and Accumulated Depreciation, Accumulated Depreciation	396,175
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 27143 S Baseline Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	27143 S Baseline Road
Real Estate and Accumulated Depreciation, Location of Property	Elwood, IL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,022,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,612,934
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	61,895
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,022,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,674,829
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,696,829
Real Estate and Accumulated Depreciation, Accumulated Depreciation	89,388
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 180 Sheree Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	180 Sheree Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Exton, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	4,777,363
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,647,861
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,334,403
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,609,923
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,649,426
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	13,942,761
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,592,187
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,212,253
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7028 Snowdrift Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7028 Snowdrift Road
Real Estate and Accumulated Depreciation, Location of Property	Fogelville, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	520,473
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	959,279
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	157,281
Real Estate and Accumulated Depreciation, Carrying Amount of Land	524,390
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,112,644
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,637,033
Real Estate and Accumulated Depreciation, Accumulated Depreciation	338,252
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1100 Virginia Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1100 Virginia Drive
Real Estate and Accumulated Depreciation, Location of Property	Fort Washington, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	35,619,946
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	51,390,540
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	15,924,109
Real Estate and Accumulated Depreciation, Carrying Amount of Land	36,374,955
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	66,559,639
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	102,934,594
Real Estate and Accumulated Depreciation, Accumulated Depreciation	9,466,317
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1250 Virginia Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1250 Virginia Drive
Real Estate and Accumulated Depreciation, Location of Property	Fort Washington, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,639,166
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,928,574
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	413,286
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,650,703
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,330,323
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,981,025
Real Estate and Accumulated Depreciation, Accumulated Depreciation	414,581
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 275 Commerce Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	275 Commerce Drive
Real Estate and Accumulated Depreciation, Location of Property	Fort Washington, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,775,894
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,160,855
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,599,497
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,790,041
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,746,205
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,536,246
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,188,999
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 414 Commerce Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	414 Commerce Drive
Real Estate and Accumulated Depreciation, Location of Property	Fort Washington, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,267,194
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,217,460
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	497,460
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,267,937
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,714,176
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,982,113
Real Estate and Accumulated Depreciation, Accumulated Depreciation	512,790
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 420 Delaware Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	420 Delaware Drive
Real Estate and Accumulated Depreciation, Location of Property	Fort Washington, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,766,931
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,862,835
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,826,994
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,802,772
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,629,767
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,251,062
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9601 Cosner Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9601 Cosner Drive
Real Estate and Accumulated Depreciation, Location of Property	Fredericksburg, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	475,262
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,917,234
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	214,221
Real Estate and Accumulated Depreciation, Carrying Amount of Land	475,262
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,131,454
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,606,716
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,710,796
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200 W Cypress Creek Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200 W Cypress Creek Road
Real Estate and Accumulated Depreciation, Location of Property	Ft Lauderdale, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,414,989
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,399,738
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,624,047
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,414,989
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,023,785
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,438,774
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,672,389
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5410 - 5430 Northwest 33rd Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5410 - 5430 Northwest 33rd Avenue
Real Estate and Accumulated Depreciation, Location of Property	Ft. Lauderdale, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	603,776
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,176,238
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,419,852
Real Estate and Accumulated Depreciation, Carrying Amount of Land	625,111
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,574,755
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,199,866
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,063,151
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 45 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	45 Brookfield Oaks Drive
Real Estate and Accumulated Depreciation, Location of Property	Greenville, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	818,114
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,767,187
Real Estate and Accumulated Depreciation, Carrying Amount of Land	825,529
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,759,772
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,585,301
Real Estate and Accumulated Depreciation, Accumulated Depreciation	399,995
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1487 South Highway 101 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1487 South Highway 101
Real Estate and Accumulated Depreciation, Location of Property	Greer, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	464,237
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,704,053
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,301,738
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,866,552
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,168,290
Real Estate and Accumulated Depreciation, Accumulated Depreciation	356,209
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11841 Newgate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11841 Newgate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Hagerstown, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,356,207
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	30,555,105
Real Estate and Accumulated Depreciation, Carrying Amount of Land	9,741,685
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	24,169,627
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	33,911,312
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,972,910
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Enterprise Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Enterprise Parkway
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	974,675
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,579,869
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,674,322
Real Estate and Accumulated Depreciation, Carrying Amount of Land	974,675
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,254,191
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,228,866
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,547,689
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1317 Executive Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1317 Executive Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,650,423
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,964,665
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,128,829
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,486,260
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,615,088
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,175,254
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 21 Enterprise Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	21 Enterprise Parkway
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	263,668
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,167,118
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,023,917
Real Estate and Accumulated Depreciation, Carrying Amount of Land	265,719
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,188,985
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,454,704
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,569,826
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 22 Enterprise Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	22 Enterprise Parkway
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,097,368
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,760,778
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,136,281
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,097,368
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,897,059
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,994,427
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,767,630
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5 Manhattan Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5 Manhattan Square
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	207,368
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,535,913
Real Estate and Accumulated Depreciation, Carrying Amount of Land	212,694
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,530,586
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,743,281
Real Estate and Accumulated Depreciation, Accumulated Depreciation	523,910
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 521 Butler Farm Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	521 Butler Farm Road
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	750,769
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,911,149
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	365,781
Real Estate and Accumulated Depreciation, Carrying Amount of Land	710,486
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,317,212
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,027,699
Real Estate and Accumulated Depreciation, Accumulated Depreciation	762,813
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7361 Coca Cola Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7361 Coca Cola Drive
Real Estate and Accumulated Depreciation, Location of Property	Hanover, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,245,187
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,368,648
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,822,710
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,791,125
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,613,835
Real Estate and Accumulated Depreciation, Accumulated Depreciation	557,320
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 500 McCarthy Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	500 McCarthy Drive
Real Estate and Accumulated Depreciation, Location of Property	Harrisburg, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,194,872
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	19,991,436
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,534,843
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,687,013
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	24,034,138
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	29,721,151
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,231,748
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 600 Industrial Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	600 Industrial Drive
Real Estate and Accumulated Depreciation, Location of Property	Harrisburg, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	7,743,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	28,449,168
Real Estate and Accumulated Depreciation, Carrying Amount of Land	9,368,557
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	26,824,410
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	36,192,967
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,548,429
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1498 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1498 Eagle Hill Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	94,274
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,178,987
Real Estate and Accumulated Depreciation, Carrying Amount of Land	791,880
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,481,380
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,273,261
Real Estate and Accumulated Depreciation, Accumulated Depreciation	662,391
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4183 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4183 Eagle Hill Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	122,203
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,044,842
Real Estate and Accumulated Depreciation, Carrying Amount of Land	526,266
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,640,779
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,167,045
Real Estate and Accumulated Depreciation, Accumulated Depreciation	749,516
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4189 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4189 Eagle Hill Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	100,106
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,437,985
Real Estate and Accumulated Depreciation, Carrying Amount of Land	431,106
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,106,985
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,538,091
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,119,787
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4195 Eagle Hill Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4195 Eagle Hill Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	107,586
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,589,254
Real Estate and Accumulated Depreciation, Carrying Amount of Land	505,700
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,191,140
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,696,840
Real Estate and Accumulated Depreciation, Accumulated Depreciation	646,795
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4300 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4300 Federal Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	264,038
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,229,747
Real Estate and Accumulated Depreciation, Carrying Amount of Land	276,038
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,217,747
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,493,784
Real Estate and Accumulated Depreciation, Accumulated Depreciation	665,822
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4328, 4336 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4328, 4336 Federal Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	2,902,105
Real Estate and Accumulated Depreciation, Initial Cost of Land	521,122
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,534,416
Real Estate and Accumulated Depreciation, Carrying Amount of Land	825,092
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,230,446
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,055,538
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,450,496
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4344 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4344 Federal Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	484,001
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,651,429
Real Estate and Accumulated Depreciation, Carrying Amount of Land	173,623
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,961,807
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,135,430
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,324,928
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4380 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4380 Federal Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	282,996
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,251,375
Real Estate and Accumulated Depreciation, Carrying Amount of Land	283,368
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,251,003
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,534,371
Real Estate and Accumulated Depreciation, Accumulated Depreciation	877,211
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4388 Federal Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4388 Federal Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	143,661
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,213,832
Real Estate and Accumulated Depreciation, Carrying Amount of Land	132,655
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,224,838
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,357,493
Real Estate and Accumulated Depreciation, Accumulated Depreciation	413,884
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4475 Premier Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4475 Premier Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	748,693
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,801,791
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,525,421
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,025,063
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,550,484
Real Estate and Accumulated Depreciation, Accumulated Depreciation	524,955
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4500 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4500 Green Point Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	230,622
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,140,986
Real Estate and Accumulated Depreciation, Carrying Amount of Land	231,692
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,139,916
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,371,608
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,130,940
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4501 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4501 Green Point Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	319,289
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,540,927
Real Estate and Accumulated Depreciation, Carrying Amount of Land	320,450
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,539,766
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,860,216
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,300,200
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4523 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4523 Green Point Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	234,564
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,304,700
Real Estate and Accumulated Depreciation, Carrying Amount of Land	235,698
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,303,566
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,539,264
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,476,886
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4524 Green Point Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4524 Green Point Drive
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	182,810
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,739,234
Real Estate and Accumulated Depreciation, Carrying Amount of Land	183,888
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,738,156
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,922,044
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,250,350
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Walnut Grove Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Walnut Grove Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,058,901
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,343,606
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	381,107
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,058,901
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,724,712
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,783,614
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,109,884
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 100 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	100 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	38,729
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	349,811
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	21,275
Real Estate and Accumulated Depreciation, Carrying Amount of Land	38,729
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	371,086
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	409,815
Real Estate and Accumulated Depreciation, Accumulated Depreciation	126,378
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 100 Witmer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	100 Witmer Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,102,784
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	20,148,393
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,764,784
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	19,486,393
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,251,177
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,358,065
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 100-107 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	100-107 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	239,528
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,163,498
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	441,510
Real Estate and Accumulated Depreciation, Carrying Amount of Land	255,528
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,589,008
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,844,536
Real Estate and Accumulated Depreciation, Accumulated Depreciation	904,540
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 101 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	101 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	651,990
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,888,989
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,771,602
Real Estate and Accumulated Depreciation, Carrying Amount of Land	732,552
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,580,029
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,312,581
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,713,392
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1977
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 101-111 Rock Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	101-111 Rock Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	350,561
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,166,389
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,163,716
Real Estate and Accumulated Depreciation, Carrying Amount of Land	452,251
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,228,416
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,680,666
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,577,116
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 102 Rock Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	102 Rock Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,110,209
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,301,302
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,199,449
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,181,242
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,429,717
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,610,959
Real Estate and Accumulated Depreciation, Accumulated Depreciation	944,470
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 103-109 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	103-109 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	270,906
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,448,500
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	361,465
Real Estate and Accumulated Depreciation, Carrying Amount of Land	270,906
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,809,964
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,080,870
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,043,057
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 104 Rock Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	104 Rock Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	330,111
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,981,669
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	662,809
Real Estate and Accumulated Depreciation, Carrying Amount of Land	398,003
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,576,586
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,974,589
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,383,616
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1974
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 104 Witmer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	104 Witmer Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,248,148
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	593,447
Real Estate and Accumulated Depreciation, Carrying Amount of Land	189,793
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,651,802
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,841,595
Real Estate and Accumulated Depreciation, Accumulated Depreciation	556,018
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 110 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	110 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	673,041
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,776,369
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,521,422
Real Estate and Accumulated Depreciation, Carrying Amount of Land	673,041
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,297,791
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,970,832
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,287,121
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1979
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 111-159 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	111-159 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	489,032
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,126,151
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,143,340
Real Estate and Accumulated Depreciation, Carrying Amount of Land	489,032
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,269,491
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,758,523
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,004,859
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 113-123 Rock Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	113-123 Rock Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	351,072
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,171,001
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	708,270
Real Estate and Accumulated Depreciation, Carrying Amount of Land	451,731
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,778,612
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,230,343
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,315,307
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 123-135 Rock Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	123-135 Rock Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	292,360
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,411,677
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,040,774
Real Estate and Accumulated Depreciation, Carrying Amount of Land	393,019
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,351,791
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,744,810
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,374,051
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 132 Welsh Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	132 Welsh Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,333,642
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,011,188
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,408,041
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,936,789
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,344,830
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,535,958
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 161-175 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	161-175 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	294,673
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,663,722
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	957,148
Real Estate and Accumulated Depreciation, Carrying Amount of Land	294,673
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,620,870
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,915,543
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,353,320
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1976
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 181-187 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	181-187 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	360,549
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,259,984
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	787,154
Real Estate and Accumulated Depreciation, Carrying Amount of Land	360,549
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,047,138
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,407,687
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,644,337
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2 Walnut Grove Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2 Walnut Grove Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,281,870
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,767,374
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,344,498
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,265,363
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,128,379
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,393,742
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,631,544
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	638,513
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,811,323
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,822,557
Real Estate and Accumulated Depreciation, Carrying Amount of Land	638,513
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,633,880
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,272,393
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,630,276
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200-264 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200-264 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	502,705
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,540,597
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,137,481
Real Estate and Accumulated Depreciation, Carrying Amount of Land	502,705
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,678,078
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,180,783
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,153,906
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 201 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	201 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	380,127
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,433,433
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,158,024
Real Estate and Accumulated Depreciation, Carrying Amount of Land	380,802
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,590,782
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,971,584
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,959,726
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 210-223 Witmer Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	210-223 Witmer Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	270,282
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,441,276
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,953,591
Real Estate and Accumulated Depreciation, Carrying Amount of Land	270,282
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,394,867
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,665,149
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,524,268
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1972
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 220 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	220 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	629,944
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,733,228
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,203,285
Real Estate and Accumulated Depreciation, Carrying Amount of Land	629,944
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,936,513
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,566,457
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,910,399
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 231-237 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	231-237 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	436,952
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,948,963
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	994,901
Real Estate and Accumulated Depreciation, Carrying Amount of Land	436,952
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,943,864
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,380,816
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,869,903
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 240 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	240 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	629,944
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,733,234
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,881,339
Real Estate and Accumulated Depreciation, Carrying Amount of Land	629,944
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,614,573
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,244,517
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,443,076
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 255 Business Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	255 Business Center Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,154,289
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,007,214
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	689,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,140,597
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,710,262
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,850,860
Real Estate and Accumulated Depreciation, Accumulated Depreciation	680,290
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 261-283 Gibraltar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	261-283 Gibraltar Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	464,871
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,951,972
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,781,426
Real Estate and Accumulated Depreciation, Carrying Amount of Land	464,871
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,733,397
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,198,268
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,917,881
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300 Welsh Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300 Welsh Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	696,061
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,339,991
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	570,429
Real Estate and Accumulated Depreciation, Carrying Amount of Land	696,061
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,910,420
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,606,480
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,487,819
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300 Welsh Road - Building 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300 Welsh Road - Building 3
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	180,459
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,441,473
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	572,570
Real Estate and Accumulated Depreciation, Carrying Amount of Land	180,459
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,014,043
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,194,502
Real Estate and Accumulated Depreciation, Accumulated Depreciation	693,684
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300 Welsh Road - Building 4 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300 Welsh Road - Building 4
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	282,493
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,256,508
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,786,769
Real Estate and Accumulated Depreciation, Carrying Amount of Land	282,493
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,043,277
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,325,770
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,503,382
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300-309 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300-309 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	369,475
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,338,761
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,033,132
Real Estate and Accumulated Depreciation, Carrying Amount of Land	376,475
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,364,892
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,741,368
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,387,042
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 335 Commerce Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	335 Commerce Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,872,585
Real Estate and Accumulated Depreciation, Carrying Amount of Land	182,400
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,690,185
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,872,585
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,000,953
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 355 Business Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	355 Business Center Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	483,045
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	898,798
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	364,949
Real Estate and Accumulated Depreciation, Carrying Amount of Land	471,171
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,275,621
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,746,793
Real Estate and Accumulated Depreciation, Accumulated Depreciation	360,960
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4 Walnut Grove [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4 Walnut Grove
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,515,115
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,809,109
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,515,115
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,809,109
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,324,224
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,456,158
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 400-445 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	400-445 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	543,628
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,910,226
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,439,451
Real Estate and Accumulated Depreciation, Carrying Amount of Land	583,628
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,309,677
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,893,305
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,775,459
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 455 Business Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	455 Business Center Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,351,011
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,503,449
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,497,807
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,322,317
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,029,951
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,352,267
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,152,339
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5 Walnut Grove Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5 Walnut Grove Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,065,951
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,316,050
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,939,712
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,442,289
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,382,001
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,860,664
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 506 Prudential Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	506 Prudential Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	208,140
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	895,470
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	894,621
Real Estate and Accumulated Depreciation, Carrying Amount of Land	208,140
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,790,091
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,998,231
Real Estate and Accumulated Depreciation, Accumulated Depreciation	649,195
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1973
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 555 Business Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	555 Business Center Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	727,420
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,353,650
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	462,895
Real Estate and Accumulated Depreciation, Carrying Amount of Land	709,967
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,833,999
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,543,966
Real Estate and Accumulated Depreciation, Accumulated Depreciation	335,600
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 680 Blair Mill Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	680 Blair Mill Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,527,151
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	17,475,489
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,138,577
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,864,063
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	21,002,640
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,933,722
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7 Walnut Grove Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7 Walnut Grove Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,631,696
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	18,513,980
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,631,956
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	18,513,720
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	21,145,676
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,054,042
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 700 Dresher Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	700 Dresher Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,551,777
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,020,638
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,353,380
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,565,140
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,360,656
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,925,795
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,569,151
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 507 Prudential Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	507 Prudential Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	644,900
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,804,100
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,408,030
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,131,380
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	13,725,650
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,857,030
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,494,809
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 747 Dresher Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	747 Dresher Road
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,607,238
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,956,884
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,607,977
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,956,144
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,564,122
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,680,068
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 767 Electronic Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	767 Electronic Drive
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,229,685
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,436,397
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,241,970
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,424,112
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,666,082
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,087,488
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10301 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10301 Round Up Lane
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	545,501
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,927,700
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	665,133
Real Estate and Accumulated Depreciation, Carrying Amount of Land	545,501
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,592,833
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,138,334
Real Estate and Accumulated Depreciation, Accumulated Depreciation	44,425
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10305 Round Up Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10305 Round Up Lane
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,340,609
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,489,720
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,074,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,340,609
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,564,004
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,904,613
Real Estate and Accumulated Depreciation, Accumulated Depreciation	106,371
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10735 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10735 West Little York Road
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,110,988
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,351,946
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,968,676
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,135,483
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,296,128
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,431,610
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,722,546
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10739 West Little York Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10739 West Little York Road
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	797,931
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,950,894
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	148,370
Real Estate and Accumulated Depreciation, Carrying Amount of Land	799,560
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,097,635
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,897,195
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,473,983
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11201 Greens Crossing Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11201 Greens Crossing Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,006,194
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,412,584
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,964,529
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,008,542
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,374,765
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,383,307
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,222,406
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16405 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16405 Air Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	438,853
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,030,396
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	340,199
Real Estate and Accumulated Depreciation, Carrying Amount of Land	438,853
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,370,594
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,809,447
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,289,047
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16445 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16445 Air Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	363,339
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,509,186
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	199,444
Real Estate and Accumulated Depreciation, Carrying Amount of Land	363,339
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,708,630
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,071,969
Real Estate and Accumulated Depreciation, Accumulated Depreciation	946,078
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1646 Rankin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1646 Rankin Road
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	329,961
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,895,432
Real Estate and Accumulated Depreciation, Carrying Amount of Land	592,234
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,633,159
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,225,393
Real Estate and Accumulated Depreciation, Accumulated Depreciation	995,904
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16580 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16580 Air Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	289,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,559,857
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	258,134
Real Estate and Accumulated Depreciation, Carrying Amount of Land	289,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,817,992
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,106,992
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,236,310
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16602 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16602 Central Green Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	284,403
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,495,522
Real Estate and Accumulated Depreciation, Carrying Amount of Land	503,779
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,276,146
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,779,925
Real Estate and Accumulated Depreciation, Accumulated Depreciation	690,106
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16605 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16605 Air Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	298,999
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,333,535
Real Estate and Accumulated Depreciation, Carrying Amount of Land	496,186
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,136,349
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,632,535
Real Estate and Accumulated Depreciation, Accumulated Depreciation	763,328
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16680 Central Green Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16680 Central Green Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	311,952
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,165,907
Real Estate and Accumulated Depreciation, Carrying Amount of Land	492,869
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,984,990
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,477,859
Real Estate and Accumulated Depreciation, Accumulated Depreciation	532,854
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16685 Air Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16685 Air Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,903,411
Real Estate and Accumulated Depreciation, Carrying Amount of Land	414,691
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,488,720
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,903,411
Real Estate and Accumulated Depreciation, Accumulated Depreciation	483,180
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1755 Trans Central Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1755 Trans Central Drive
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	293,534
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,036,269
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	175,961
Real Estate and Accumulated Depreciation, Carrying Amount of Land	306,147
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,199,617
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,505,764
Real Estate and Accumulated Depreciation, Accumulated Depreciation	915,676
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5200 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5200 N. Sam Houston Parkway
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,519,458
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,135,548
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,490,870
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,520,074
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,625,802
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,145,877
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,429,637
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5250 N. Sam Houston Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5250 N. Sam Houston Parkway
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,173,287
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,868,256
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,593,445
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,173,942
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,461,046
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,634,988
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,311,859
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8301 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8103 Fallbrook Drive
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,515,862
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	23,946,674
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,877,884
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	22,584,652
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	28,462,536
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,273,833
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 850 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	850 Greens Parkway
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,893,405
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,593,197
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,716,438
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,899,861
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,303,179
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,203,040
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,527,593
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 860 Greens Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	860 Greens Parkway
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,399,365
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,344,650
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,524,550
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,374,012
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,894,553
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,268,565
Real Estate and Accumulated Depreciation, Accumulated Depreciation	867,255
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8801-19 & 8821-49 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8801-19 & 8821-49 Fallbrook Drive
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,290,001
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,297,141
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,927,534
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,290,002
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	17,224,674
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	19,514,676
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,779,187
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8802-8824 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8802-8824 Fallbrook Drive
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,774,995
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,364,767
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,250,771
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,775,021
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,615,511
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,390,532
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,635,071
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8825-8839 N Sam Houston Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8825-8839 N Sam Houston Pkwy
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	638,453
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,258,815
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	702,938
Real Estate and Accumulated Depreciation, Carrying Amount of Land	638,477
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,961,728
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,600,205
Real Estate and Accumulated Depreciation, Accumulated Depreciation	807,107
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8850-8872 Fallbrook Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8850-8872 Fallbrook Drive
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	504,317
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,878,351
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,051,761
Real Estate and Accumulated Depreciation, Carrying Amount of Land	504,341
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,930,088
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,434,429
Real Estate and Accumulated Depreciation, Accumulated Depreciation	935,125
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10 North Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10 North Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,211,969
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,816,042
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,972,815
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,211,969
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,788,857
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,000,826
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,949,832
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 20 Wright Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	20 Wright Avenue
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,205,946
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,018,759
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,861,025
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,363,679
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,224,704
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,021,230
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 307 International Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	307 International Circle
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,538,319
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	14,190,832
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	14,099,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,542,881
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	28,285,553
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	31,828,435
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,720,116
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 309 International Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	309 International Circle
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	613,667
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,458,204
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	897,071
Real Estate and Accumulated Depreciation, Carrying Amount of Land	615,096
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,353,845
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,968,941
Real Estate and Accumulated Depreciation, Accumulated Depreciation	560,140
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 311 International Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	311 International Circle
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	313,365
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,281,093
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	120,579
Real Estate and Accumulated Depreciation, Carrying Amount of Land	314,572
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,400,465
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,715,038
Real Estate and Accumulated Depreciation, Accumulated Depreciation	220,146
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4 North Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4 North Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,269,948
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,551,370
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,560,795
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,269,948
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,112,165
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	19,382,112
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,787,209
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6 North Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6 North Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,077,949
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,770,566
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,800,111
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,077,949
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,570,677
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,648,627
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,626,169
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10245 Centurion Parkway North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10245 Centurion Parkway North
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	852,644
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,510,889
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	914,042
Real Estate and Accumulated Depreciation, Carrying Amount of Land	853,704
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,423,871
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,277,575
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,401,666
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4190 Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4190 Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	821,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,866,000
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,402,659
Real Estate and Accumulated Depreciation, Carrying Amount of Land	827,420
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,262,239
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,089,659
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,442,276
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4345 Southpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4345 Southpoint Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,465,552
Real Estate and Accumulated Depreciation, Carrying Amount of Land	418,093
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,047,459
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,465,552
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,767,630
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4801 Executive Park Court - 100 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4801 Executive Park Court - 100
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	554,993
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,993,277
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	280,904
Real Estate and Accumulated Depreciation, Carrying Amount of Land	554,542
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,274,631
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,829,174
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,148,026
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4801 Executive Park Court - 200 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4801 Executive Park Court - 200
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	370,017
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,995,518
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	186,685
Real Estate and Accumulated Depreciation, Carrying Amount of Land	370,039
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,182,181
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,552,220
Real Estate and Accumulated Depreciation, Accumulated Depreciation	796,333
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4810 Executive Park Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4810 Executive Park Court
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	369,694
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,045,639
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	657,134
Real Estate and Accumulated Depreciation, Carrying Amount of Land	370,039
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,702,428
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,072,467
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,393,249
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4815 Executive Park Court - 100 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4815 Executive Park Court - 100
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	366,317
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,975,393
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	107,814
Real Estate and Accumulated Depreciation, Carrying Amount of Land	366,339
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,083,185
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,449,524
Real Estate and Accumulated Depreciation, Accumulated Depreciation	789,560
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4815 Executive Park Court - 200 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4815 Executive Park Court - 200
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	462,522
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,494,397
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	353,339
Real Estate and Accumulated Depreciation, Carrying Amount of Land	462,549
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,847,708
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,310,258
Real Estate and Accumulated Depreciation, Accumulated Depreciation	957,960
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4820 Executive Park Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4820 Executive Park Court
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	555,173
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,693,130
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	609,686
Real Estate and Accumulated Depreciation, Carrying Amount of Land	555,213
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,302,777
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,857,989
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,237,066
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4825 Executive Park Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4825 Executive Park Court
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	601,278
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,242,491
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	50,343
Real Estate and Accumulated Depreciation, Carrying Amount of Land	601,401
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,292,711
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,894,112
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,177,369
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4875 Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4875 Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,089,347
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,024,417
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,287,152
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,826,612
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,113,764
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,347,376
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4887 Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4887 Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,299,202
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,866,815
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,665,915
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,500,102
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,166,017
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,482,153
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4899 Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4899 Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,299,201
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,914,539
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,168,062
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,045,679
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,213,740
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,584,420
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4901 Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4901 Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	877,964
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,360,742
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,900,700
Real Estate and Accumulated Depreciation, Carrying Amount of Land	877,964
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,261,442
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,139,406
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,784,487
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4905 Belfort Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4905 Belfort Street
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	638,154
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,257,563
Real Estate and Accumulated Depreciation, Carrying Amount of Land	641,272
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,254,446
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,895,717
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,076,116
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5201 Gate Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5201 Gate Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,836,532
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	21,433,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,269,346
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	21,000,880
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	25,270,226
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,408,028
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6601 Executive Park Circle North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6601 Executive Park Circle North
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	551,250
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,128,361
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	271,987
Real Estate and Accumulated Depreciation, Carrying Amount of Land	551,250
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,400,348
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,951,598
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,157,086
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1992
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6602 Executive Park Court - 100 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6602 Executive Park Court - 100
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	388,519
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,095,293
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	222,710
Real Estate and Accumulated Depreciation, Carrying Amount of Land	388,541
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,317,981
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,706,522
Real Estate and Accumulated Depreciation, Accumulated Depreciation	819,527
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1993
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6602 Executive Park Court - 200 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6602 Executive Park Court - 200
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	296,014
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,596,347
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	395,485
Real Estate and Accumulated Depreciation, Carrying Amount of Land	296,032
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,991,815
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,287,846
Real Estate and Accumulated Depreciation, Accumulated Depreciation	675,199
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1993
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6631 Executive Park Court - 100 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6631 Executive Park Court - 100
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	251,613
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,356,849
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	369,768
Real Estate and Accumulated Depreciation, Carrying Amount of Land	251,627
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,726,603
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,978,230
Real Estate and Accumulated Depreciation, Accumulated Depreciation	795,843
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1994
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6631 Executive Park Court - 200 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6631 Executive Park Court - 200
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	406,561
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,195,070
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	447,582
Real Estate and Accumulated Depreciation, Carrying Amount of Land	407,043
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,642,169
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,049,213
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,000,982
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1994
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6700 Southpoint Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6700 Southpoint Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	620,719
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,989,746
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	185,447
Real Estate and Accumulated Depreciation, Carrying Amount of Land	624,215
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,171,698
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,795,912
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,217,887
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7014 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7014 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	574,198
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,259,741
Real Estate and Accumulated Depreciation, Carrying Amount of Land	780,486
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,053,453
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,833,939
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,029,573
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7016 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7016 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	597,181
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,373,250
Real Estate and Accumulated Depreciation, Carrying Amount of Land	602,633
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,367,799
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,970,431
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,283,115
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7018 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7018 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	840,996
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,581,479
Real Estate and Accumulated Depreciation, Carrying Amount of Land	846,461
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,576,014
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,422,475
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,406,491
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7020 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7020 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	398,257
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,327,622
Real Estate and Accumulated Depreciation, Carrying Amount of Land	749,811
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,976,068
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,725,879
Real Estate and Accumulated Depreciation, Accumulated Depreciation	827,600
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7022 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7022 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	706,934
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,984,235
Real Estate and Accumulated Depreciation, Carrying Amount of Land	853,981
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,837,188
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,691,169
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,206,504
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7077 Bonneval Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7077 Bonneval Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	768,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,789,000
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,516,266
Real Estate and Accumulated Depreciation, Carrying Amount of Land	774,020
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,299,246
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,073,266
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,873,381
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7251 Salisbury Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7251 Salisbury Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,382,617
Real Estate and Accumulated Depreciation, Carrying Amount of Land	662,559
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,720,058
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,382,617
Real Estate and Accumulated Depreciation, Accumulated Depreciation	723,724
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7255 Salisbury Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7255 Salisbury Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	392,060
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,503,681
Real Estate and Accumulated Depreciation, Carrying Amount of Land	680,766
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,214,975
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,895,741
Real Estate and Accumulated Depreciation, Accumulated Depreciation	525,127
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8665,8667,8669 Baypine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8665,8667,8669 Baypine Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	966,552
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,331,507
Real Estate and Accumulated Depreciation, Carrying Amount of Land	974,959
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,323,100
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,298,059
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,736,182
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8775 Baypine Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8775 Baypine Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	906,804
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,842,207
Real Estate and Accumulated Depreciation, Carrying Amount of Land	913,013
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,835,997
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,749,011
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,761,228
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 151 South Warner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	151 South Warner Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,218,086
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,937,866
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,153,361
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,187,900
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,121,413
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,309,313
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,409,405
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1980
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 180 South Warner Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	180 South Warner Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,741,628
Real Estate and Accumulated Depreciation, Carrying Amount of Land	0
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,741,628
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,741,628
Real Estate and Accumulated Depreciation, Accumulated Depreciation	354,820
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2009
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2100 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2100 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,110,111
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	11,121,375
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,132,519
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,098,967
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,231,486
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,656,663
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2201 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2201 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	17,648,408
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,413,514
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	15,234,894
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,648,408
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,319,699
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2300 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2300 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	509,580
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,042,297
Real Estate and Accumulated Depreciation, Carrying Amount of Land	574,152
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,977,725
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,551,877
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,249,993
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2301 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2301 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,645,246
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	30,080,439
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,581,649
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	27,144,035
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	31,725,685
Real Estate and Accumulated Depreciation, Accumulated Depreciation	8,671,065
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2500 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2500 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	509,580
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,670,729
Real Estate and Accumulated Depreciation, Carrying Amount of Land	592,886
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,587,422
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,180,309
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,053,946
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2520 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2520 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,020,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,621,206
Real Estate and Accumulated Depreciation, Carrying Amount of Land	978,402
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,662,804
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,641,206
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,743,326
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2560 Renaissance Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2560 Renaissance Boulevard
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,729,254
Real Estate and Accumulated Depreciation, Carrying Amount of Land	649,792
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,079,462
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,729,254
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,208,593
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2700 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2700 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	764,370
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,643,566
Real Estate and Accumulated Depreciation, Carrying Amount of Land	867,815
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,540,121
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,407,936
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,236,792
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2900 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2900 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	679,440
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,503,074
Real Estate and Accumulated Depreciation, Carrying Amount of Land	774,096
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,408,418
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,182,514
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,361,526
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3200 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3200 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	928,637
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,397,780
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,210,137
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,116,280
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,326,417
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,952,920
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3400 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3400 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	776,496
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,139,068
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,489,498
Real Estate and Accumulated Depreciation, Carrying Amount of Land	776,496
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,628,565
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,405,061
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,412,543
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3600 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3600 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	236,432
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,856,252
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	784,645
Real Estate and Accumulated Depreciation, Carrying Amount of Land	236,432
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,640,897
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,877,328
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,172,527
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3602 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3602 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	217,734
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,759,489
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	263,517
Real Estate and Accumulated Depreciation, Carrying Amount of Land	217,809
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,022,931
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,240,740
Real Estate and Accumulated Depreciation, Accumulated Depreciation	800,482
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3604 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3604 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	397,178
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,856,788
Real Estate and Accumulated Depreciation, Carrying Amount of Land	350,874
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,903,092
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,253,966
Real Estate and Accumulated Depreciation, Accumulated Depreciation	532,925
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 440 East Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	440 East Swedesford Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	717,001
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,816,121
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,516,259
Real Estate and Accumulated Depreciation, Carrying Amount of Land	717,001
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,332,381
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,049,381
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,095,196
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 460 East Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	460 East Swedesford Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	705,317
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,737,487
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,016,354
Real Estate and Accumulated Depreciation, Carrying Amount of Land	705,317
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,753,842
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,459,158
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,084,146
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 650 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	650 Swedesford Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	952,911
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,722,830
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,863,229
Real Estate and Accumulated Depreciation, Carrying Amount of Land	952,911
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,586,058
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,538,969
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,918,316
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1971
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 680 Swedesford Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	680 Swedesford Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	952,361
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,722,830
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,971,052
Real Estate and Accumulated Depreciation, Carrying Amount of Land	952,361
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	13,693,883
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,646,243
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,332,982
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1971
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 170 South Warner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	170 South Warner Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	547,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,137,400
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,866,911
Real Estate and Accumulated Depreciation, Carrying Amount of Land	458,232
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,093,879
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,552,111
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,976,010
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1980
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 190 South Warner Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	190 South Warner Road
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	552,200
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,162,600
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,063,497
Real Estate and Accumulated Depreciation, Carrying Amount of Land	461,909
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,316,387
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,778,297
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,879,608
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1980
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3000 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3000 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,191,449
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,476,299
Real Estate and Accumulated Depreciation, Carrying Amount of Land	946,703
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,721,045
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,667,748
Real Estate and Accumulated Depreciation, Accumulated Depreciation	891,488
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3100 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3100 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	601,956
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,823,484
Real Estate and Accumulated Depreciation, Carrying Amount of Land	611,436
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,814,005
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,425,441
Real Estate and Accumulated Depreciation, Accumulated Depreciation	672,267
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3500 Horizon Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3500 Horizon Drive
Real Estate and Accumulated Depreciation, Location of Property	King of Prussia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,204,839
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,830,072
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,223,875
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,811,036
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,034,911
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,047,261
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11425 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11425 State Highway 225
Real Estate and Accumulated Depreciation, Location of Property	LaPorte, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	975,974
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,409,036
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,956
Real Estate and Accumulated Depreciation, Carrying Amount of Land	977,542
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,416,424
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,393,966
Real Estate and Accumulated Depreciation, Accumulated Depreciation	545,933
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11503 State Highway 225 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11503 State Highway 225
Real Estate and Accumulated Depreciation, Location of Property	LaPorte, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,561,931
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,695,493
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	235,343
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,566,047
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,926,720
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,492,767
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,378,793
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7528 Walker Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7528 Walker Way
Real Estate and Accumulated Depreciation, Location of Property	Lehigh Valley, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	893,441
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,510,456
Real Estate and Accumulated Depreciation, Carrying Amount of Land	779,330
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,624,568
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,403,897
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,216,171
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8301 Industrial Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8301 Industrial Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Lehigh, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	11,249,550
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	44,324,333
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,254,716
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	44,319,167
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	55,573,883
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,890,126
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8500 Willard Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8500 Willard Drive
Real Estate and Accumulated Depreciation, Location of Property	Lehigh, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	3,543,408
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,398,815
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	21,851,739
Real Estate and Accumulated Depreciation, Carrying Amount of Land	7,734,826
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	20,515,729
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	28,250,554
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,920,709
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7533 Insurtial Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7533 Insurtial Parkway
Real Estate and Accumulated Depreciation, Location of Property	Lower Macungie, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,603,460
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,807,987
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,612,392
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,603,460
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	21,420,379
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	27,023,839
Real Estate and Accumulated Depreciation, Accumulated Depreciation	349,401
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 31700 Research Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	31700 Research Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Madison Heights, MI
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	373,202
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,824,721
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	(649,436)
Real Estate and Accumulated Depreciation, Carrying Amount of Land	373,203
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,175,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,548,487
Real Estate and Accumulated Depreciation, Accumulated Depreciation	726,104
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1901 Summit Tower Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1901 Summit Tower Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Maitland, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,078,791
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	12,348,567
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,047,678
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,083,206
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,391,831
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,475,037
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,249,881
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Country View Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Country View Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	400,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,600,000
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	437,856
Real Estate and Accumulated Depreciation, Carrying Amount of Land	406,421
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,031,435
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,437,856
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,721,281
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	419,460
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,792,570
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	504,443
Real Estate and Accumulated Depreciation, Carrying Amount of Land	419,460
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,297,013
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,716,473
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,523,780
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	823,540
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,341,376
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	459,973
Real Estate and Accumulated Depreciation, Carrying Amount of Land	832,244
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,792,645
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,624,889
Real Estate and Accumulated Depreciation, Accumulated Depreciation	448,788
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 100 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	100 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,320,625
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,709,379
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,451,139
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,578,865
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,030,004
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,099,686
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1001 Cedar Hollow Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1001 Cedar Hollow Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,436,814
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	16,081,159
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,676,470
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	15,841,503
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,517,973
Real Estate and Accumulated Depreciation, Accumulated Depreciation	7,041,576
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	496,297
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,227,678
Real Estate and Accumulated Depreciation, Carrying Amount of Land	708,331
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,015,644
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,723,975
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,016,895
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11,15 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11,15 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,837,050
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	14,959,980
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,837,878
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,959,152
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,797,030
Real Estate and Accumulated Depreciation, Accumulated Depreciation	11,094,196
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 18 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	18 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	394,036
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,976,221
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	99,539
Real Estate and Accumulated Depreciation, Carrying Amount of Land	397,293
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,072,504
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,469,796
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,331,736
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1980
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2 West Liberty Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2 West Liberty Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,405,041
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	11,849,135
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,405,042
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,849,135
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,254,176
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,464,714
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	495,893
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,739,093
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	578,651
Real Estate and Accumulated Depreciation, Carrying Amount of Land	588,384
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,225,253
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,813,637
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,375,198
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 27-43 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	27-43 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	448,775
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,365,913
Real Estate and Accumulated Depreciation, Carrying Amount of Land	449,447
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,365,241
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,814,688
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,705,584
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1977
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3 Country View Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3 Country View Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	814,278
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,142,433
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,128,881
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,827,830
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,956,711
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,584,731
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 375 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	375 Technology Drive
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	191,114
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,616,195
Real Estate and Accumulated Depreciation, Carrying Amount of Land	234,922
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,572,387
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,807,309
Real Estate and Accumulated Depreciation, Accumulated Depreciation	558,325
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 40 Liberty Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	40 Liberty Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,241,137
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	17,737,090
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,412,139
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,241,167
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	20,149,198
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	24,390,365
Real Estate and Accumulated Depreciation, Accumulated Depreciation	7,481,130
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 425 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	425 Technology Drive
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	191,114
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,571,919
Real Estate and Accumulated Depreciation, Carrying Amount of Land	321,473
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,441,560
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,763,033
Real Estate and Accumulated Depreciation, Accumulated Depreciation	527,452
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 45 Liberty Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	45 Liberty Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,380,221
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	15,318,415
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,749,748
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,948,888
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	19,698,636
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,637,319
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 45-67 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	45-67 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	795,143
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,051,620
Real Estate and Accumulated Depreciation, Carrying Amount of Land	795,831
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,050,932
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,846,763
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,644,029
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1974
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	684,200
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,181,661
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,611,073
Real Estate and Accumulated Depreciation, Carrying Amount of Land	684,200
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,792,734
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,476,934
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,904,582
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 50 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	50 Morehall Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	849,576
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,051,932
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,337,076
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,564,432
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,901,508
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,043,706
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 600 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	600 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,013,750
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,255,848
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,171,080
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,098,519
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,269,598
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,618,724
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 700 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	700 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,013,750
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,216,674
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,158,337
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,072,087
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,230,424
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,592,381
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	509,075
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,698,038
Real Estate and Accumulated Depreciation, Carrying Amount of Land	509,899
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,697,215
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,207,113
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,651,654
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10, 20 Liberty Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10, 20 Liberty Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	724,058
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,650,270
Real Estate and Accumulated Depreciation, Carrying Amount of Land	724,846
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,649,482
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,374,328
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,127,794
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12,14,16 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12,14,16 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	130,689
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,326,294
Real Estate and Accumulated Depreciation, Carrying Amount of Land	128,767
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,328,216
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,456,983
Real Estate and Accumulated Depreciation, Accumulated Depreciation	844,715
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 14 Lee Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	14 Lee Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	664,282
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,569,322
Real Estate and Accumulated Depreciation, Carrying Amount of Land	643,892
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,589,712
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,233,604
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,305,169
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 155 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	155 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	625,147
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,640,081
Real Estate and Accumulated Depreciation, Carrying Amount of Land	626,068
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,639,161
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,265,228
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,819,590
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 20 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	20 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	465,539
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,123,276
Real Estate and Accumulated Depreciation, Carrying Amount of Land	466,413
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,122,402
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,588,815
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,153,379
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 205 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	205 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,368,259
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,572,260
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,369,003
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,571,516
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,940,519
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,407,092
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 257-275 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	257-275 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	504,611
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,690,816
Real Estate and Accumulated Depreciation, Carrying Amount of Land	505,458
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,689,969
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,195,427
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,116,298
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 277-293 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	277-293 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	530,729
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,389,465
Real Estate and Accumulated Depreciation, Carrying Amount of Land	531,534
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,388,660
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,920,194
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,540,101
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 30 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	30 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	128,126
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	352,088
Real Estate and Accumulated Depreciation, Carrying Amount of Land	128,783
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	351,431
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	480,214
Real Estate and Accumulated Depreciation, Accumulated Depreciation	318,442
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300-400 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300-400 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	937,212
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,942,075
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,012,843
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,866,445
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,879,287
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,572,056
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 311 Technology Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	311 Technology Drive
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	397,131
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,848,506
Real Estate and Accumulated Depreciation, Carrying Amount of Land	397,948
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,847,689
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,245,637
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,792,412
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 333 Phoenixville Pike [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	333 Phoenixville Pike
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	523,530
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,708,843
Real Estate and Accumulated Depreciation, Carrying Amount of Land	524,230
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,708,143
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,232,373
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,053,866
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 40 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	40 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	322,918
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,233,318
Real Estate and Accumulated Depreciation, Carrying Amount of Land	325,775
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,230,461
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,556,236
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,137,009
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 420 Lapp Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	420 Lapp Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,054,418
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,066,555
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,055,243
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,065,731
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,120,973
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,568,585
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5 Country View Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5 Country View Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	785,168
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,678,632
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	860,806
Real Estate and Accumulated Depreciation, Carrying Amount of Land	786,235
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,538,370
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,324,606
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,599,572
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 50 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	50 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	323,971
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,112,784
Real Estate and Accumulated Depreciation, Carrying Amount of Land	323,792
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,112,964
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,436,755
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,888,562
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 500 Chesterfield Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	500 Chesterfield Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	472,364
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,854,263
Real Estate and Accumulated Depreciation, Carrying Amount of Land	519,742
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,806,885
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,326,627
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,529,933
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 508 Lapp Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	508 Lapp Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	331,392
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,694,108
Real Estate and Accumulated Depreciation, Carrying Amount of Land	332,216
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,693,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,025,500
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,148,407
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 510 Lapp Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	510 Lapp Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	356,950
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	933,487
Real Estate and Accumulated Depreciation, Carrying Amount of Land	357,751
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	932,686
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,290,437
Real Estate and Accumulated Depreciation, Accumulated Depreciation	680,722
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 55 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	55 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	215,005
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,008,392
Real Estate and Accumulated Depreciation, Carrying Amount of Land	215,818
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,007,580
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,223,397
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,549,300
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 60 Morehall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	60 Morehall Road
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	865,424
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,285,000
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,141,509
Real Estate and Accumulated Depreciation, Carrying Amount of Land	884,974
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,406,959
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	15,291,933
Real Estate and Accumulated Depreciation, Accumulated Depreciation	8,489,319
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 65 Valley Stream Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	65 Valley Stream Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	381,544
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,715,903
Real Estate and Accumulated Depreciation, Carrying Amount of Land	382,361
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,715,086
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,097,447
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,577,246
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	176,435
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,274,039
Real Estate and Accumulated Depreciation, Carrying Amount of Land	177,317
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,273,157
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,450,474
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,705,453
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 75 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	75 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	67,191
Real Estate and Accumulated Depreciation, Initial Cost of Land	143,074
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	618,372
Real Estate and Accumulated Depreciation, Carrying Amount of Land	143,811
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	617,635
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	761,446
Real Estate and Accumulated Depreciation, Accumulated Depreciation	475,647
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1977
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 77-123 Great Valley Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	77-123 Great Valley Parkway
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	887,664
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,512,689
Real Estate and Accumulated Depreciation, Carrying Amount of Land	888,359
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,511,994
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,400,353
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,881,036
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7550 Meridian Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7550 Meridian Circle
Real Estate and Accumulated Depreciation, Location of Property	Maple Grove, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	513,250
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,901,906
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	851,435
Real Estate and Accumulated Depreciation, Carrying Amount of Land	513,250
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,753,340
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,266,590
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,273,423
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 301 Lippincott Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	301 Lippincott Drive
Real Estate and Accumulated Depreciation, Location of Property	Marlton, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,069,837
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,780,163
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,656,361
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,069,838
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,436,523
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,506,361
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,334,081
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 303 Lippincott Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	303 Lippincott Drive
Real Estate and Accumulated Depreciation, Location of Property	Marlton, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,069,837
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,780,163
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,826,662
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,069,838
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,606,825
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,676,662
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,710,913
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 400 Lippincott Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	400 Lippincott Drive
Real Estate and Accumulated Depreciation, Location of Property	Marlton, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	69,402
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,665,348
Real Estate and Accumulated Depreciation, Carrying Amount of Land	317,799
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,416,951
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,734,750
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,404,247
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 406 Lippincott Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	406 Lippincott Drive
Real Estate and Accumulated Depreciation, Location of Property	Marlton, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	321,455
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,539,871
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	898,946
Real Estate and Accumulated Depreciation, Carrying Amount of Land	327,554
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,432,718
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,760,272
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,105,349
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 65 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	65 Brookfield Oaks Drive
Real Estate and Accumulated Depreciation, Location of Property	Mauldin, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	557,174
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,855,272
Real Estate and Accumulated Depreciation, Carrying Amount of Land	506,318
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,906,129
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,412,447
Real Estate and Accumulated Depreciation, Accumulated Depreciation	538,079
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 75 Brookfield Oaks Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	75 Brookfield Oaks Drive
Real Estate and Accumulated Depreciation, Location of Property	Mauldin, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	419,731
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,338,692
Real Estate and Accumulated Depreciation, Carrying Amount of Land	430,909
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,327,514
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,758,423
Real Estate and Accumulated Depreciation, Accumulated Depreciation	413,806
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11520 West Calumet Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11520 West Calumet Road
Real Estate and Accumulated Depreciation, Location of Property	Milwaukee, WI
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	341,698
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,527,548
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	49,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land	341,698
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,577,242
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,918,940
Real Estate and Accumulated Depreciation, Accumulated Depreciation	468,669
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4600 Nathan Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4600 Nathan Lane
Real Estate and Accumulated Depreciation, Location of Property	Minneapolis, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,063,558
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,308,857
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,038,197
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,334,218
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,372,415
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,032,980
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4700 Nathan Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4700 Nathan Lane North
Real Estate and Accumulated Depreciation, Location of Property	Minneapolis, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,501,308
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,446,083
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,470,521
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,501,308
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	21,916,604
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,417,912
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,523,133
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12501 & 12701 Whitewater Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12501 & 12701 Whitewater Drive
Real Estate and Accumulated Depreciation, Location of Property	Minnegonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,175,209
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,948,085
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,939,428
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,177,953
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,884,769
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,062,722
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,819,988
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12800 Whitewater Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12800 Whitewater Drive
Real Estate and Accumulated Depreciation, Location of Property	Minnetonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,273,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,158,737
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,483
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,273,600
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,160,219
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,433,819
Real Estate and Accumulated Depreciation, Accumulated Depreciation	21,983
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12900 Whitewater Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12900 Whitewater Drive
Real Estate and Accumulated Depreciation, Location of Property	Minnetonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,236,560
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,762,325
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,482
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,236,560
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,763,808
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,000,368
Real Estate and Accumulated Depreciation, Accumulated Depreciation	19,260
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5400-5500 Feltl Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5400-5500 Feltl Road
Real Estate and Accumulated Depreciation, Location of Property	Minnetonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	883,895
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,983,345
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,109,459
Real Estate and Accumulated Depreciation, Carrying Amount of Land	883,895
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,092,804
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,976,699
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,785,589
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5600 & 5610 Rowland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5600 & 5610 Rowland Road
Real Estate and Accumulated Depreciation, Location of Property	Minnetonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	828,650
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,399,409
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,273,810
Real Estate and Accumulated Depreciation, Carrying Amount of Land	829,263
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,672,606
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,501,869
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,080,667
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6000 Clearwater Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6000 Clearwater Drive
Real Estate and Accumulated Depreciation, Location of Property	Minnetonka, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	985,016
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,091,371
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	985,016
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,091,371
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,076,387
Real Estate and Accumulated Depreciation, Accumulated Depreciation	14,464
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3100 SW 145th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3100 SW 145th Avenue
Real Estate and Accumulated Depreciation, Location of Property	Miramar, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,204,407
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	16,692,437
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,265,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,631,844
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	22,896,844
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,158,058
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3350 SW 148th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3350 SW 148th Avenue
Real Estate and Accumulated Depreciation, Location of Property	Miramar, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,960,511
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	18,585,409
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,980,689
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	18,565,230
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	21,545,920
Real Estate and Accumulated Depreciation, Accumulated Depreciation	6,561,785
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3400 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3400 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Miramar, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,022,153
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,345,881
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,543,794
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,022,153
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,889,674
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,911,828
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,603,718
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3450 Lakeside Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3450 Lakeside Drive
Real Estate and Accumulated Depreciation, Location of Property	Miramar, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,022,152
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,357,143
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,664,027
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,022,152
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,021,170
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,043,322
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,176,435
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 323 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	323 Park Knoll Drive
Real Estate and Accumulated Depreciation, Location of Property	Morrisville, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	2,761,516
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,071,600
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,397,807
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	493,095
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,071,600
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,890,902
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,962,502
Real Estate and Accumulated Depreciation, Accumulated Depreciation	243,600
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 324 Park Knoll Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	324 Park Knoll Drive
Real Estate and Accumulated Depreciation, Location of Property	Morrisville, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,449,092
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,424,932
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	290,618
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,449,450
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,715,192
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,164,642
Real Estate and Accumulated Depreciation, Accumulated Depreciation	611,045
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 619 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	619 Distribution Drive
Real Estate and Accumulated Depreciation, Location of Property	Morrisville, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,031,430
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,655,167
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	341,601
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,031,685
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,996,513
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,028,198
Real Estate and Accumulated Depreciation, Accumulated Depreciation	747,721
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 627 Distribution Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	627 Distribution Drive
Real Estate and Accumulated Depreciation, Location of Property	Morrisville, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,061,370
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,152,110
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	402,352
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,061,632
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,554,200
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,615,832
Real Estate and Accumulated Depreciation, Accumulated Depreciation	639,133
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 330 Fellowship Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	330 Fellowship Road
Real Estate and Accumulated Depreciation, Location of Property	Mount Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,730,570
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	17,127,143
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,758,270
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	17,099,443
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,857,713
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,574,453
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 300 Fellowship Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	300 Fellowship Road
Real Estate and Accumulated Depreciation, Location of Property	Mt Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,350,519
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,098,904
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,251,616
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,350,519
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,466,669
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3001 Leadenhall Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3001 Leadenhall Road
Real Estate and Accumulated Depreciation, Location of Property	Mt Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,925,719
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	191,390
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,965,396
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,936,489
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,146,016
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,082,505
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,009,603
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 302 Fellowship Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	302 Fellowship Road
Real Estate and Accumulated Depreciation, Location of Property	Mt Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,512,120
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,881,267
Real Estate and Accumulated Depreciation, Carrying Amount of Land	539,060
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,854,327
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,393,387
Real Estate and Accumulated Depreciation, Accumulated Depreciation	711,497
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 350 Fellowship Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	350 Fellowship Road
Real Estate and Accumulated Depreciation, Location of Property	Mt Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,960,159
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,449,611
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,622,152
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,970,687
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,061,236
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,031,922
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,029,227
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1000 Briggs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1000 Briggs Road
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	288,577
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,546,537
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,582,304
Real Estate and Accumulated Depreciation, Carrying Amount of Land	288,577
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,128,841
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,417,418
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,300,800
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1001 Briggs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1001 Briggs Road
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	701,705
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,505,652
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,974,794
Real Estate and Accumulated Depreciation, Carrying Amount of Land	701,705
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,480,446
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,182,151
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,488,205
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1015 Briggs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1015 Briggs Road
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	356,987
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,588,277
Real Estate and Accumulated Depreciation, Carrying Amount of Land	470,659
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,474,605
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,945,264
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,196,611
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1020 Briggs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1020 Briggs Road
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	494,334
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,393,424
Real Estate and Accumulated Depreciation, Carrying Amount of Land	569,184
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,318,575
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,887,758
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,313,785
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1025 Briggs Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1025 Briggs Road
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	430,990
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,714,828
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,353,899
Real Estate and Accumulated Depreciation, Carrying Amount of Land	430,990
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,068,727
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,499,717
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,018,565
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 11000, 15000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	11000, 15000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	310,585
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,394,900
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	263,774
Real Estate and Accumulated Depreciation, Carrying Amount of Land	311,950
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,657,309
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,969,260
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,053,523
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 12000, 14000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12000, 14000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	361,800
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,285,817
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	787,561
Real Estate and Accumulated Depreciation, Carrying Amount of Land	362,855
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,072,323
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,435,178
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,891,177
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 16000, 18000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	16000, 18000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	289,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,512,683
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,084,817
Real Estate and Accumulated Depreciation, Carrying Amount of Land	290,545
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,596,655
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,887,200
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,601,646
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 17000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	17000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	144,515
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,346,494
Real Estate and Accumulated Depreciation, Carrying Amount of Land	144,515
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,346,494
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,491,009
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,116,457
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5000 Dearborn Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5000 Dearborn Court
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,057,763
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,191,827
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,484,953
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,058,832
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,675,711
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,734,543
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,319,608
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	234,151
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,022,683
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	509,729
Real Estate and Accumulated Depreciation, Carrying Amount of Land	234,151
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,532,412
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,766,563
Real Estate and Accumulated Depreciation, Accumulated Depreciation	872,927
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	234,814
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,995,098
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	587,719
Real Estate and Accumulated Depreciation, Carrying Amount of Land	234,814
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,582,817
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,817,631
Real Estate and Accumulated Depreciation, Accumulated Depreciation	975,609
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9000 Commerce Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9000 Commerce Parkway
Real Estate and Accumulated Depreciation, Location of Property	Mt. Laurel, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	286,587
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,474,820
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,353,535
Real Estate and Accumulated Depreciation, Carrying Amount of Land	286,587
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,828,355
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,114,942
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,378,232
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 550-590 Hale Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	550-590 Hale Avenue
Real Estate and Accumulated Depreciation, Location of Property	Oakdale, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	765,535
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,488,754
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	305,459
Real Estate and Accumulated Depreciation, Carrying Amount of Land	766,390
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,793,358
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,559,748
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,198,544
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1879 Lamont Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1879 Lamont Avenue
Real Estate and Accumulated Depreciation, Location of Property	Odenton, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,976,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,099,579
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,469,160
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,011,030
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,533,709
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,544,739
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,161,185
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 350 Winmeyer Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	350 Winmeyer Avenue
Real Estate and Accumulated Depreciation, Location of Property	Odenton, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,778,400
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,289,165
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,060,935
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,809,927
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,318,573
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,128,500
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,715,055
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1000 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1000 Gills Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	415,906
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,712,378
Real Estate and Accumulated Depreciation, Carrying Amount of Land	435,400
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,692,883
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,128,283
Real Estate and Accumulated Depreciation, Accumulated Depreciation	263,779
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10003 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10003 Satellite Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	680,312
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,120,754
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,219,087
Real Estate and Accumulated Depreciation, Carrying Amount of Land	680,312
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,339,841
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,020,152
Real Estate and Accumulated Depreciation, Accumulated Depreciation	861,594
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10511 & 10611 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10511 & 10611 Satellite Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	517,554
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,568,186
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	343,526
Real Estate and Accumulated Depreciation, Carrying Amount of Land	522,991
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,906,275
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,429,266
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,108,405
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 10771 Palm Bay Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	10771 Palm Bay Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	664,605
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,363,614
Real Estate and Accumulated Depreciation, Carrying Amount of Land	685,383
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,342,835
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,028,219
Real Estate and Accumulated Depreciation, Accumulated Depreciation	592,268
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1090 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1090 Gills Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	878,320
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,558,833
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,400,491
Real Estate and Accumulated Depreciation, Carrying Amount of Land	878,320
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,959,324
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,837,644
Real Estate and Accumulated Depreciation, Accumulated Depreciation	835,596
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1400-1440 Central Florida Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1400-1440 Central Florida Parkway
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	518,043
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,561,938
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	780,780
Real Estate and Accumulated Depreciation, Carrying Amount of Land	518,043
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,342,718
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,860,761
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,163,890
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1962
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1902 Cypress Lake Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1902 Cypress Lake Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	523,512
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,191,790
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	914,639
Real Estate and Accumulated Depreciation, Carrying Amount of Land	538,512
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,091,429
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,629,941
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,563,118
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1950 Summit Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1950 Summit Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,573,700
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	17,478,646
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,254,034
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,583,667
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	20,722,713
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,306,380
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,798,815
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1958 Summit Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1958 Summit Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,573,961
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,206,937
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,973,148
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,583,216
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	21,170,829
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,754,046
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,463,759
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 201 Summit Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	201 Summit Park Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,435,921
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	38,434,995
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,510,990
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	38,359,926
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	42,870,916
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,809,137
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2202 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2202 Taft-Vineland Road
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,631,110
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,283,713
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,347,397
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,631,110
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,833,110
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2256 Taft-Vineland Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2256 Taft-Vineland Road
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances
Real Estate and Accumulated Depreciation, Initial Cost of Land	467,296
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,494,666
Real Estate and Accumulated Depreciation, Carrying Amount of Land	825,673
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,136,290
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,961,963
Real Estate and Accumulated Depreciation, Accumulated Depreciation	441,210
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2351 Investors Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2351 Investors Row
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,261,924
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,496,249
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,201,589
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,263,211
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,696,551
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,959,762
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,446,141
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2400 South Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2400 South Lake Orange Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	385,964
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,002,042
Real Estate and Accumulated Depreciation, Carrying Amount of Land	642,427
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,745,579
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,388,006
Real Estate and Accumulated Depreciation, Accumulated Depreciation	661,545
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2416 Lake Orange Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2416 Lake Orange Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	535,964
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,935,605
Real Estate and Accumulated Depreciation, Carrying Amount of Land	704,800
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,766,769
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,471,569
Real Estate and Accumulated Depreciation, Accumulated Depreciation	872,247
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6200 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6200 Lee Vista Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,435,301
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,174,642
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	346,148
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,435,301
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,520,790
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,956,091
Real Estate and Accumulated Depreciation, Accumulated Depreciation	888,934
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6501 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6501 Lee Vista Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	903,701
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,660,761
Real Estate and Accumulated Depreciation, Carrying Amount of Land	925,671
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,638,790
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,564,462
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,452,887
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6923 Lee Vista Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6923 Lee Vista Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	903,701
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,790,427
Real Estate and Accumulated Depreciation, Carrying Amount of Land	830,953
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,863,175
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,694,128
Real Estate and Accumulated Depreciation, Accumulated Depreciation	609,911
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7022 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7022 TPC Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,443,510
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,775,194
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	599,828
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,457,286
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,361,247
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,818,533
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,168,913
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7100 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7100 TPC Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,431,489
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,002,539
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	624,873
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,445,807
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,613,094
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,058,901
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,376,003
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7101 TPC Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7101 TPC Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,553,537
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,702,243
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	289,159
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,570,863
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,974,076
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,544,939
Real Estate and Accumulated Depreciation, Accumulated Depreciation	820,012
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7315 Kingspointe Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7315 Kingspointe Parkway
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,931,697
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,388,203
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,135,046
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,932,004
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,522,943
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,454,946
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,267,067
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8201 Chancellor Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8201 Chancellor Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,295,972
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	15,564,905
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,966,361
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,295,972
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	18,531,266
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	22,827,239
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,250,544
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 851 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	851 Gills Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	332,992
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,877,002
Real Estate and Accumulated Depreciation, Carrying Amount of Land	373,500
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,836,494
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,209,994
Real Estate and Accumulated Depreciation, Accumulated Depreciation	251,222
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 950 Gills Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	950 Gills Drive
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	443,989
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,812,728
Real Estate and Accumulated Depreciation, Carrying Amount of Land	464,800
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,791,917
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,256,717
Real Estate and Accumulated Depreciation, Accumulated Depreciation	227,044
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9550 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9550 Satellite Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	574,831
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,446,025
Real Estate and Accumulated Depreciation, Carrying Amount of Land	587,319
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,433,536
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,020,856
Real Estate and Accumulated Depreciation, Accumulated Depreciation	792,078
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9600 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9600 Satellite Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	252,850
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,297,923
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	32,928
Real Estate and Accumulated Depreciation, Carrying Amount of Land	252,850
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,330,851
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,583,701
Real Estate and Accumulated Depreciation, Accumulated Depreciation	480,917
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9700 Satellite Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9700 Satellite Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	405,362
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,146,546
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	236,492
Real Estate and Accumulated Depreciation, Carrying Amount of Land	405,362
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,383,038
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,788,400
Real Estate and Accumulated Depreciation, Accumulated Depreciation	479,698
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | South Center Land-Phase II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	South Center Land-Phase II
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	838,853
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,084,539
Real Estate and Accumulated Depreciation, Carrying Amount of Land	767,953
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,155,440
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,923,392
Real Estate and Accumulated Depreciation, Accumulated Depreciation	691,730
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Crescent Drive
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	567,280
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	12,113,684
Real Estate and Accumulated Depreciation, Carrying Amount of Land	347,892
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,333,072
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,680,964
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,520,508
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3 Crescent Drive
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	214,726
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	23,772,950
Real Estate and Accumulated Depreciation, Carrying Amount of Land	417,823
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	23,569,853
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,987,676
Real Estate and Accumulated Depreciation, Accumulated Depreciation	936,289
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3 Franklin Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3 Franklin Plaza
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,483,144
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	32,165,537
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,514,519
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	32,134,162
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	34,648,681
Real Estate and Accumulated Depreciation, Accumulated Depreciation	10,362,797
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4300 South 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4300 South 26th Street
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	402,673
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	36,419,033
Real Estate and Accumulated Depreciation, Carrying Amount of Land	413,030
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	36,408,677
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	36,821,707
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,145,275
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4751 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4751 League Island Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	992,965
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	331,924
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,791,359
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,022,081
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,094,168
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,116,249
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,616,209
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4775 League Island Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4775 League Island Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	891,892
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,757,514
Real Estate and Accumulated Depreciation, Carrying Amount of Land	366,982
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,282,425
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,649,406
Real Estate and Accumulated Depreciation, Accumulated Depreciation	677,992
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8801 Tinicum Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8801 Tinicum Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,474,031
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	43,774,779
Real Estate and Accumulated Depreciation, Carrying Amount of Land	125,087
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	46,123,723
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	46,248,810
Real Estate and Accumulated Depreciation, Accumulated Depreciation	19,689,892
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4207 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4207 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,409,908
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,680,808
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,100,202
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,410,248
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,780,670
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,190,918
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,028,343
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4217 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4217 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	7,922,480
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	10,045,599
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,755,567
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,690,321
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	14,033,325
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,723,646
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,009,429
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4303 E. Cotton Center Boulvard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4303 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,619,964
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,675,711
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	43,652
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,619,964
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,719,362
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,339,326
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,381,214
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4313 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4313 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,895,539
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,724,283
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,401,012
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,895,539
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	18,125,296
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	22,020,834
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,705,935
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4405 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4405 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,646,318
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,697,439
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	264,679
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,646,318
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,962,118
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,608,436
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,407,159
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4410 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4410 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,758,484
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	10,559,563
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,587,577
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,765,172
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	16,140,451
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,905,624
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,042,809
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4415 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4415 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,749,957
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,667,748
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	493,421
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,749,957
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,161,169
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,911,126
Real Estate and Accumulated Depreciation, Accumulated Depreciation	412,534
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4425 E. Cotton Center Boulvard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4425 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0	[1]
Real Estate and Accumulated Depreciation, Initial Cost of Land	7,318,457
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	24,549,401
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	(473,426)
Real Estate and Accumulated Depreciation, Carrying Amount of Land	7,318,457
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	24,075,975
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	31,394,432
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,620,521
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4435 E. Cotton Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4435 E. Cotton Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,910,584
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,954,020
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,166,648
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,911,045
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,120,208
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,031,253
Real Estate and Accumulated Depreciation, Accumulated Depreciation	675,054
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4550 South 44th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4550 South 44th Street
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,380,972
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,260,382
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,391,283
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,250,072
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,641,355
Real Estate and Accumulated Depreciation, Accumulated Depreciation	706,289
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4610 South 44th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4610 South 44th Street
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,539,310
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,331,534
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,827,288
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,043,555
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,870,843
Real Estate and Accumulated Depreciation, Accumulated Depreciation	835,345
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4750 S. 44th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4750 S. 44th Place
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,756,307
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	8,336,400
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,190,610
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,761,587
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,521,730
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,283,317
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,334,839
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9801 80th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9801 80th Avenue
Real Estate and Accumulated Depreciation, Location of Property	Pleasant Prairie, WI
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,692,077
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	7,934,794
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	275,264
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,689,726
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,212,409
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,902,135
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,700,981
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1994
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2250 Hickory Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2250 Hickory Road
Real Estate and Accumulated Depreciation, Location of Property	Plymouth Meeting, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,015,851
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,175,555
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,042,053
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,024,040
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,209,419
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,233,460
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,627,676
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 14630-14650 28th Avenue North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	14630-14650 28th Avenue North
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	198,205
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,793,422
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	724,834
Real Estate and Accumulated Depreciation, Carrying Amount of Land	198,205
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,518,256
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,716,461
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,000,391
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2800 Campus Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2800 Campus Drive
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	395,366
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,554,512
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	813,500
Real Estate and Accumulated Depreciation, Carrying Amount of Land	395,366
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,368,012
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,763,378
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,721,227
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2905 Northwest Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2905 Northwest Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	516,920
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,646,342
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,377,010
Real Estate and Accumulated Depreciation, Carrying Amount of Land	516,920
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,023,352
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,540,272
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,366,535
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1983
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2920 Northwest Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2920 Northwest Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	392,026
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,433,678
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	459,193
Real Estate and Accumulated Depreciation, Carrying Amount of Land	384,235
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,900,662
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,284,897
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,388,343
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9600 54th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9600 54th Avenue
Real Estate and Accumulated Depreciation, Location of Property	Plymouth, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	332,317
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,077,820
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,124,550
Real Estate and Accumulated Depreciation, Carrying Amount of Land	534,993
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,999,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,534,687
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,236,880
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1400 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1400 SW 6th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,157,049
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,620,956
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	594,570
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,157,049
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,215,526
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,372,575
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,733,317
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1405 SW 6th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1405 SW 6th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	392,138
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,565,787
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	444,870
Real Estate and Accumulated Depreciation, Carrying Amount of Land	392,138
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,010,658
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,402,796
Real Estate and Accumulated Depreciation, Accumulated Depreciation	725,031
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1500 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1500 SW 5th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	972,232
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,892,085
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	368,198
Real Estate and Accumulated Depreciation, Carrying Amount of Land	972,232
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,260,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,232,515
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,518,402
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1957
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1501 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1501 SW 5th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	203,247
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	811,093
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	200,027
Real Estate and Accumulated Depreciation, Carrying Amount of Land	203,247
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,011,120
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,214,367
Real Estate and Accumulated Depreciation, Accumulated Depreciation	325,445
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1601 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1601 SW 5th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	203,247
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	811,093
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	248,833
Real Estate and Accumulated Depreciation, Carrying Amount of Land	203,247
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,059,926
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,263,173
Real Estate and Accumulated Depreciation, Accumulated Depreciation	446,894
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1651 SW 5th Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1651 SW 5th Court
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	203,247
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	811,093
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	57,614
Real Estate and Accumulated Depreciation, Carrying Amount of Land	203,247
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	868,708
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,071,955
Real Estate and Accumulated Depreciation, Accumulated Depreciation	291,363
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 595 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	595 SW 13th Terrace
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	359,933
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,437,116
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	624,145
Real Estate and Accumulated Depreciation, Carrying Amount of Land	359,933
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,061,261
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,421,194
Real Estate and Accumulated Depreciation, Accumulated Depreciation	664,570
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 601 SW 13th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	601 SW 13th Terrace
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	164,413
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	655,933
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	263,508
Real Estate and Accumulated Depreciation, Carrying Amount of Land	164,413
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	919,441
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,083,853
Real Estate and Accumulated Depreciation, Accumulated Depreciation	373,541
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1984
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 605 SW 16th Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	605 SW 16th Terrace
Real Estate and Accumulated Depreciation, Location of Property	Pompano Beach, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	310,778
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,238,324
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	221,760
Real Estate and Accumulated Depreciation, Carrying Amount of Land	310,178
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,460,685
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,770,862
Real Estate and Accumulated Depreciation, Accumulated Depreciation	599,048
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1965
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 301 Hill Carter Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	301 Hill Carter Parkway
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	659,456
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,836,010
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	159,898
Real Estate and Accumulated Depreciation, Carrying Amount of Land	659,456
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,995,908
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,655,364
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,091,170
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4101-4127 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4101-4127 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	310,854
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,279,597
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,080,673
Real Estate and Accumulated Depreciation, Carrying Amount of Land	310,854
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,360,270
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,671,124
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,273,109
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1973
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4201-4261 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4201-4261 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	693,203
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,083,493
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,838,267
Real Estate and Accumulated Depreciation, Carrying Amount of Land	693,203
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,921,760
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,614,963
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,796,841
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4263-4299 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4263-4299 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	256,203
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,549,649
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,038,507
Real Estate and Accumulated Depreciation, Carrying Amount of Land	256,203
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,588,156
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,844,359
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,719,065
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1976
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4263F-N. Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4263F-N. Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	91,476
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,755,808
Real Estate and Accumulated Depreciation, Carrying Amount of Land	91,599
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,755,685
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,847,284
Real Estate and Accumulated Depreciation, Accumulated Depreciation	659,149
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1975
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4301-4335 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4301-4335 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	223,696
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,640,435
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,400,246
Real Estate and Accumulated Depreciation, Carrying Amount of Land	223,696
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,040,681
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,264,377
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,235,265
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4337-4379 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4337-4379 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	325,303
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,385,557
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,163,576
Real Estate and Accumulated Depreciation, Carrying Amount of Land	325,303
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,549,133
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,874,436
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,468,967
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1979
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4401-4445 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4401-4445 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	615,038
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,510,272
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	477,087
Real Estate and Accumulated Depreciation, Carrying Amount of Land	615,038
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,987,359
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,602,397
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,031,972
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4447-4491 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4447-4491 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	454,056
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,729,742
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	362,531
Real Estate and Accumulated Depreciation, Carrying Amount of Land	454,056
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,092,273
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,546,329
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,370,707
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4501-4549 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4501-4549 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	486,166
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,565,211
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	427,390
Real Estate and Accumulated Depreciation, Carrying Amount of Land	486,166
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,992,601
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,478,767
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,634,659
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4551-4593 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4551-4593 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	474,360
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,478,646
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	814,875
Real Estate and Accumulated Depreciation, Carrying Amount of Land	474,360
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,293,521
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,767,881
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,736,416
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1982
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4601-4643 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4601-4643 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	652,455
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,784,675
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	762,195
Real Estate and Accumulated Depreciation, Carrying Amount of Land	652,455
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,546,870
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,199,325
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,408,887
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4645-4683 Carolina Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4645-4683 Carolina Avenue
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	404,616
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,967,187
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	457,396
Real Estate and Accumulated Depreciation, Carrying Amount of Land	404,616
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,424,583
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,829,199
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,394,191
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4717-4729 Eubank Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4717-4729 Eubank Road
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	449,447
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,294,697
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,399,752
Real Estate and Accumulated Depreciation, Carrying Amount of Land	452,263
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,691,632
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,143,896
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,819,882
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1978
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 510 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	510 Eastpark Court
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	261,961
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,110,874
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	427,164
Real Estate and Accumulated Depreciation, Carrying Amount of Land	262,210
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,537,789
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,799,999
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,060,044
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 520 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	520 Eastpark Court
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	486,118
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,083,582
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	263,481
Real Estate and Accumulated Depreciation, Carrying Amount of Land	486,598
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,346,583
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,833,181
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,701,858
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 530 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	530 Eastpark Court
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	266,883
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,535,792
Real Estate and Accumulated Depreciation, Carrying Amount of Land	334,772
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,467,903
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,802,675
Real Estate and Accumulated Depreciation, Accumulated Depreciation	933,171
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 540 Eastpark Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	540 Eastpark Court
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	742,300
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,415,233
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,066,839
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,090,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,157,533
Real Estate and Accumulated Depreciation, Accumulated Depreciation	410,645
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5600-5626 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5600-5626 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	489,941
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,592,900
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	210,765
Real Estate and Accumulated Depreciation, Carrying Amount of Land	489,941
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,803,665
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,293,606
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,593,435
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5601-5659 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5601-5659 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	705,660
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,589,984
Real Estate and Accumulated Depreciation, Carrying Amount of Land	720,100
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,575,544
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,295,644
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,793,897
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5650-5674 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5650-5674 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	644,384
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,025,480
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	87,419
Real Estate and Accumulated Depreciation, Carrying Amount of Land	644,384
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,112,899
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,757,283
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,774,328
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5700 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5700 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	408,729
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,697,348
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	676,233
Real Estate and Accumulated Depreciation, Carrying Amount of Land	408,729
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,373,581
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,782,310
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,532,486
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5701-5799 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5701-5799 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	694,644
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,394,868
Real Estate and Accumulated Depreciation, Carrying Amount of Land	700,503
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,389,009
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,089,512
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,970,942
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5900 Eastport Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5900 Eastport Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	676,661
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,942,774
Real Estate and Accumulated Depreciation, Carrying Amount of Land	687,898
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,931,537
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,619,435
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,923,676
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6000 Eastport Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6000 Eastport Blvd
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	872,901
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,486,258
Real Estate and Accumulated Depreciation, Carrying Amount of Land	901,666
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,457,493
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,359,159
Real Estate and Accumulated Depreciation, Accumulated Depreciation	702,711
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2020 US Highway 301 South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2020 US Highway 301 South
Real Estate and Accumulated Depreciation, Location of Property	Riverview, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,233,639
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	13,608,485
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	109,898
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,233,800
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	13,718,223
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,952,022
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,070,114
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6530 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6530 Judge Adams Road
Real Estate and Accumulated Depreciation, Location of Property	Rock Creek, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	305,821
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,782,967
Real Estate and Accumulated Depreciation, Carrying Amount of Land	335,061
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,753,727
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,088,788
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,511,927
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6532 Judge Adams Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6532 Judge Adams Road
Real Estate and Accumulated Depreciation, Location of Property	Rock Creek, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	354,903
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,981,740
Real Estate and Accumulated Depreciation, Carrying Amount of Land	399,988
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,936,655
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,336,643
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,376,294
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 13098 George Weber Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	13098 George Weber Drive
Real Estate and Accumulated Depreciation, Location of Property	Rogers, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	895,811
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,004,189
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,000
Real Estate and Accumulated Depreciation, Carrying Amount of Land	895,811
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,007,188
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,903,000
Real Estate and Accumulated Depreciation, Accumulated Depreciation	58,003
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8501 East Raintree Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8501 East Raintree Drive
Real Estate and Accumulated Depreciation, Location of Property	Scottsdale, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,076,412
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	27,621,159
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,115,137
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	27,582,434
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	31,697,571
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,159,433
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6900 Harbor View Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6900 Harbor View Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Suffolk, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	904,052
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,566,884
Real Estate and Accumulated Depreciation, Carrying Amount of Land	807,006
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,663,931
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,470,936
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,130,317
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 6950 Harbor View Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6950 Harbor View Blvd
Real Estate and Accumulated Depreciation, Location of Property	Suffolk, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	929,844
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	6,229,627
Real Estate and Accumulated Depreciation, Carrying Amount of Land	794,848
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,364,624
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,159,471
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,115,211
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1301 International Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1301 International Parkway
Real Estate and Accumulated Depreciation, Location of Property	Sunrise, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,100,162
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	24,219,956
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	7,793,804
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,100,791
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	32,013,131
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	37,113,922
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,275,773
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 13621 NW 12th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	13621 NW 12th Street
Real Estate and Accumulated Depreciation, Location of Property	Sunrise, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,570,820
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,454,900
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,665,402
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,570,821
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,120,301
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,691,122
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,157,009
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 13630 NW 8th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	13630 NW 8th Street
Real Estate and Accumulated Depreciation, Location of Property	Sunrise, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	659,797
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,596,275
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	146,456
Real Estate and Accumulated Depreciation, Carrying Amount of Land	659,825
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,742,702
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,402,528
Real Estate and Accumulated Depreciation, Accumulated Depreciation	938,360
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1991
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 13650 NW 8th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	13650 NW 8th Street
Real Estate and Accumulated Depreciation, Location of Property	Sunrise, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	558,223
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,171,930
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	184,108
Real Estate and Accumulated Depreciation, Carrying Amount of Land	558,251
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,356,010
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,914,261
Real Estate and Accumulated Depreciation, Accumulated Depreciation	759,392
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1991
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 111 Kelsey Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	111 Kelsey Lane
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	359,540
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,461,850
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	533,128
Real Estate and Accumulated Depreciation, Carrying Amount of Land	359,540
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,994,978
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,354,518
Real Estate and Accumulated Depreciation, Accumulated Depreciation	796,292
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 131 Kelsey Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	131 Kelsey Lane
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	511,463
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,437,886
Real Estate and Accumulated Depreciation, Carrying Amount of Land	559,527
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,389,822
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,949,349
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,294,223
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1985
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 150-182 Kelsey Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	150-182 Kelsey Lane
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	403,541
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,549,284
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,181,609
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,771,216
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,952,825
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,617,980
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200-34 Kelsey Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200-34 Kelsey Lane
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	330,097
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,321,485
Real Estate and Accumulated Depreciation, Carrying Amount of Land	933,362
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,718,220
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,651,582
Real Estate and Accumulated Depreciation, Accumulated Depreciation	417,917
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 3102,3104,3110 Cherry Palm Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	3102,3104,3110 Cherry Palm Drive
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	503,767
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,787,585
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,127,273
Real Estate and Accumulated Depreciation, Carrying Amount of Land	503,767
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,914,858
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,418,625
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,702,932
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4502 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4502 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,875,253
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,071,535
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,803,718
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,875,253
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,163,127
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4503 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4503 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,496,413
Real Estate and Accumulated Depreciation, Carrying Amount of Land	619,913
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,876,500
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,496,413
Real Estate and Accumulated Depreciation, Accumulated Depreciation	809,689
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4505 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4505 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,019,029
Real Estate and Accumulated Depreciation, Carrying Amount of Land	716,594
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,302,435
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,019,029
Real Estate and Accumulated Depreciation, Accumulated Depreciation	841,605
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4508 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4508 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	498,598
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,057,752
Real Estate and Accumulated Depreciation, Carrying Amount of Land	556,887
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,999,463
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,556,350
Real Estate and Accumulated Depreciation, Accumulated Depreciation	975,787
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4511 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4511 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,662,517
Real Estate and Accumulated Depreciation, Carrying Amount of Land	686,594
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,975,923
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,662,517
Real Estate and Accumulated Depreciation, Accumulated Depreciation	501,472
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4520 Seedling Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4520 Seedling Circle
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	854,797
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	42,131
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,721,233
Real Estate and Accumulated Depreciation, Carrying Amount of Land	854,797
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,763,364
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,618,161
Real Estate and Accumulated Depreciation, Accumulated Depreciation	531,255
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4630 Woodland Corporate Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4630 Woodland Corporate Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	943,169
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,340,415
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,560,099
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,723,485
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,283,585
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,940,356
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 4631 Woodland Corporate Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4631 Woodland Corporate Blvd
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,453,367
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,396,486
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,908,792
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,941,061
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,849,853
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,010,606
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 501 US Highway 301 South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	501 US Highway 301 South
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	898,884
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,501,039
Real Estate and Accumulated Depreciation, Carrying Amount of Land	900,508
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,499,416
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,399,923
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,090,227
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5250 Eagle Trail Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5250 Eagle Trail Drive
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	952,860
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,464,999
Real Estate and Accumulated Depreciation, Carrying Amount of Land	952,860
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,464,999
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,417,859
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,146,389
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5501-5519 Pioneer Park Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5501-5519 Pioneer Park Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	162,000
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,613,000
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	976,773
Real Estate and Accumulated Depreciation, Carrying Amount of Land	262,416
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,489,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,751,773
Real Estate and Accumulated Depreciation, Accumulated Depreciation	991,427
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1981
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5690-5694 Crenshaw Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5690-5694 Crenshaw Street
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	181,923
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,812,496
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	506,037
Real Estate and Accumulated Depreciation, Carrying Amount of Land	181,923
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,318,534
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,500,457
Real Estate and Accumulated Depreciation, Accumulated Depreciation	834,554
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1979
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 701-725 South US Hwy 301 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	701-725 South US Hwy 301
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	419,683
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,388,719
Real Estate and Accumulated Depreciation, Carrying Amount of Land	661,680
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,146,722
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,808,402
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,125,861
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7621 Bald Cypress Place (Bldg N) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7621 Bald Cypress Place (Bldg N)
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,482,613
Real Estate and Accumulated Depreciation, Carrying Amount of Land	447,498
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,035,115
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,482,613
Real Estate and Accumulated Depreciation, Accumulated Depreciation	277,997
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7622 Bald Cypress Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7622 Bald Cypress Place
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,305,584
Real Estate and Accumulated Depreciation, Carrying Amount of Land	300,000
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,005,584
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,305,584
Real Estate and Accumulated Depreciation, Accumulated Depreciation	305,610
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7724 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7724 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	235,893
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,127,887
Real Estate and Accumulated Depreciation, Carrying Amount of Land	235,894
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,127,886
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,363,780
Real Estate and Accumulated Depreciation, Accumulated Depreciation	802,814
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7725 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7725 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	553,335
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,366,114
Real Estate and Accumulated Depreciation, Carrying Amount of Land	771,501
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,147,947
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,919,449
Real Estate and Accumulated Depreciation, Accumulated Depreciation	994,204
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7802-50 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7802-50 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	357,364
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,578,607
Real Estate and Accumulated Depreciation, Carrying Amount of Land	506,949
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,429,023
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,935,971
Real Estate and Accumulated Depreciation, Accumulated Depreciation	814,765
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7851-7861 Woodland Center Blvd [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7851-7861 Woodland Center Blvd
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	548,905
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,241,627
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	204,883
Real Estate and Accumulated Depreciation, Carrying Amount of Land	548,905
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,446,510
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,995,415
Real Estate and Accumulated Depreciation, Accumulated Depreciation	379,044
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7852-98 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7852-98 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	357,364
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,671,312
Real Estate and Accumulated Depreciation, Carrying Amount of Land	506,949
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,521,727
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,028,676
Real Estate and Accumulated Depreciation, Accumulated Depreciation	832,453
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7920 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7920 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,082,648
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,445,444
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	77,964
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,082,648
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,523,408
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,606,056
Real Estate and Accumulated Depreciation, Accumulated Depreciation	907,145
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7930, 8010-20 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7930, 8010-20 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,408,478
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,247,246
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,061,494
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,408,478
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,308,741
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	7,717,218
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,521,608
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1990
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8001 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8001 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	350,406
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,377,320
Real Estate and Accumulated Depreciation, Carrying Amount of Land	438,061
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,289,666
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,727,726
Real Estate and Accumulated Depreciation, Accumulated Depreciation	759,767
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8112-42 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8112-42 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	513,263
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,230,239
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	649,273
Real Estate and Accumulated Depreciation, Carrying Amount of Land	513,263
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,879,513
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,392,775
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,524,538
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8154-8198 Woodland Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8154-8198 Woodland Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	399,088
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,868,834
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	898,405
Real Estate and Accumulated Depreciation, Carrying Amount of Land	399,088
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,767,239
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,166,327
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,274,743
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8401-8408 Benjamin Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8401-8408 Benjamin Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	789,651
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	4,454,648
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	275,040
Real Estate and Accumulated Depreciation, Carrying Amount of Land	611,626
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,907,713
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,519,339
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,265,187
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1986
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8705 Henderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8705 Henderson Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,303,870
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	23,688,409
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	295,627
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,304,102
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	23,983,805
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	28,287,907
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,999,976
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8715 Henderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8715 Henderson Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,343,910
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,325,599
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	325,089
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,344,090
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	18,650,508
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	21,994,598
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,445,088
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8725 Henderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8725 Henderson Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,167,787
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	19,126,318
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	314,323
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,167,958
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	19,440,471
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	22,608,428
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,825,288
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8735 Henderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8735 Henderson Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,166,130
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	18,735,573
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,163,921
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,166,300
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	19,899,324
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	23,065,624
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,917,666
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8745 Henderson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8745 Henderson Road
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,050,439
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	11,173,008
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	515,886
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,050,548
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,688,785
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,739,333
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,275,379
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8900-34 Brittany Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8900-34 Brittany Was
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	537,194
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,622,389
Real Estate and Accumulated Depreciation, Carrying Amount of Land	978,019
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,181,564
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,159,583
Real Estate and Accumulated Depreciation, Accumulated Depreciation	679,802
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8921 Brittany Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8921 Brittany Way
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	224,369
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,063,882
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	990,985
Real Estate and Accumulated Depreciation, Carrying Amount of Land	254,493
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,024,743
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,279,236
Real Estate and Accumulated Depreciation, Accumulated Depreciation	742,858
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9001-9015 Brittany Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9001-9015 Brittany Way
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	209,841
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,806,688
Real Estate and Accumulated Depreciation, Carrying Amount of Land	364,514
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,652,015
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,016,529
Real Estate and Accumulated Depreciation, Accumulated Depreciation	522,998
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9002-9036 Brittany Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9002-9036 Brittany Way
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	492,320
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,853,643
Real Estate and Accumulated Depreciation, Carrying Amount of Land	899,284
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,446,679
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,345,963
Real Estate and Accumulated Depreciation, Accumulated Depreciation	987,410
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2004
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 901-933 US Highway 301 South [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	901-933 US Highway 301 South
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	500,391
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,874,192
Real Estate and Accumulated Depreciation, Carrying Amount of Land	840,314
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,534,270
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,374,584
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,275,936
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 910-926 Chad Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	910-926 Chad Lane
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	201,771
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,214,583
Real Estate and Accumulated Depreciation, Carrying Amount of Land	628,237
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,788,117
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,416,354
Real Estate and Accumulated Depreciation, Accumulated Depreciation	692,547
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 9306-24 East Broadway Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	9306-24 East Broadway Avenue
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	450,440
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,303,369
Real Estate and Accumulated Depreciation, Carrying Amount of Land	486,004
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,267,805
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,753,809
Real Estate and Accumulated Depreciation, Accumulated Depreciation	307,730
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 921 South Park Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	921 South Park Lane
Real Estate and Accumulated Depreciation, Location of Property	Tempe, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,192,820
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,548,313
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,192,820
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,548,313
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,741,133
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 8313 West Pierce Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8313 West Pierce Street
Real Estate and Accumulated Depreciation, Location of Property	Tolleson, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,295,090
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,079,811
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,224,098
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,295,090
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	12,303,908
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,598,999
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,730,579
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1457 Miller Store Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1457 Miller Store Road
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	473,689
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,663,045
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	545,166
Real Estate and Accumulated Depreciation, Carrying Amount of Land	474,746
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,207,155
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,681,900
Real Estate and Accumulated Depreciation, Accumulated Depreciation	826,492
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2003
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 200 Golden Oak Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	200 Golden Oak Court
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,116,693
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,770,480
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,861,264
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,116,693
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,631,744
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,748,437
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,992,287
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 208 Golden Oak Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	208 Golden Oak Court
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	965,177
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,728,717
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,473,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land	965,177
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	8,202,074
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,167,251
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,019,532
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 2809 South Lynnhaven Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2809 South Lynnhaven Road
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	953,590
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,142,742
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,746,798
Real Estate and Accumulated Depreciation, Carrying Amount of Land	953,590
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,889,540
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,843,130
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,817,822
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 484 Viking Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	484 Viking Drive
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	891,753
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	3,607,890
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	615,653
Real Estate and Accumulated Depreciation, Carrying Amount of Land	891,753
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,223,543
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,115,296
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,569,056
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1987
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 5700 Cleveland Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5700 Cleveland Street
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	700,112
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	9,592,721
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,981,495
Real Estate and Accumulated Depreciation, Carrying Amount of Land	700,564
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	11,573,763
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,274,328
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,406,863
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1989
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 629 Phoenix Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	629 Phoenix Drive
Real Estate and Accumulated Depreciation, Location of Property	Virginia Beach, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	371,694
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	2,108,097
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	341,152
Real Estate and Accumulated Depreciation, Carrying Amount of Land	371,694
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	2,449,249
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,820,943
Real Estate and Accumulated Depreciation, Accumulated Depreciation	910,170
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1100 17th Street NW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1100 17th Street NW
Real Estate and Accumulated Depreciation, Location of Property	Washington, DC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	16,558,660
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	32,223,978
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,200
Real Estate and Accumulated Depreciation, Carrying Amount of Land	16,558,660
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	32,227,178
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	48,785,838
Real Estate and Accumulated Depreciation, Accumulated Depreciation	164,631
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1200 Liberty Ridge Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1200 Liberty Ridge Drive
Real Estate and Accumulated Depreciation, Location of Property	Wayne, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,215,667
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,602,185
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,223,660
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,594,192
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	14,817,852
Real Estate and Accumulated Depreciation, Accumulated Depreciation	3,168,838
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1500 Liberty Ridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1500 Liberty Ridge
Real Estate and Accumulated Depreciation, Location of Property	Wayne, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,287,555
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	31,934,588
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,636,499
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	28,585,645
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	40,222,144
Real Estate and Accumulated Depreciation, Accumulated Depreciation	8,564,000
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 825 Duportail Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	825 Duportail Road
Real Estate and Accumulated Depreciation, Location of Property	Wayne, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,536,619
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	16,179,213
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,448,311
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,539,281
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	20,624,863
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	26,164,144
Real Estate and Accumulated Depreciation, Accumulated Depreciation	5,987,793
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1979
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 400-500 Brandywine Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	400-500 Brandywine Parkway
Real Estate and Accumulated Depreciation, Location of Property	West Chester, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	845,846
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	6,809,025
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	656,823
Real Estate and Accumulated Depreciation, Carrying Amount of Land	845,846
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,465,848
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,311,694
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,596,611
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 600 Brandywine Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	600 Brandywine Parkway
Real Estate and Accumulated Depreciation, Location of Property	West Chester, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	664,899
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,352,410
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	806,694
Real Estate and Accumulated Depreciation, Carrying Amount of Land	664,899
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	6,159,105
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,824,003
Real Estate and Accumulated Depreciation, Accumulated Depreciation	2,238,066
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1988
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 1 Kings Hill Aveune [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1 Kings Hill Aveune
Real Estate and Accumulated Depreciation, Location of Property	West Malling, UK
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,960,474
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,889,016
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,071,458
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,960,474
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,358,577
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 42 Kings Hill Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	42 Kings Hill Avenue
Real Estate and Accumulated Depreciation, Location of Property	West Malling, UK
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	17,820,185
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,222,025
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	13,598,161
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	17,820,186
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,624,350
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | Liberty Square Retail Blocks [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Liberty Square Retail Blocks
Real Estate and Accumulated Depreciation, Location of Property	West Malling, UK
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	559,590
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	5,113,902
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,417,808
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,118,387
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	7,972,912
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,091,299
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,320,887
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | 7805 Hudson Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7805 Hudson Road
Real Estate and Accumulated Depreciation, Location of Property	Woodbury, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,279,834
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	10,293,862
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,385,739
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	10,187,958
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,573,697
Real Estate and Accumulated Depreciation, Accumulated Depreciation	4,055,430
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2002
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Operating Properties [Member] | Total Operating Properties [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Amount of Encumbrances	40,715,747
Real Estate and Accumulated Depreciation, Initial Cost of Land	781,189,164
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	1,763,612,230
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,429,160,915
Real Estate and Accumulated Depreciation, Carrying Amount of Land	856,783,741
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,117,178,569
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,973,962,310
Real Estate and Accumulated Depreciation, Accumulated Depreciation	1,062,229,638
Development in Progress [Member] | 2785 Commerce Center Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2785 Commerce Center Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Bethlehem, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	11,961,623
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,421,184
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,961,623
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,421,184
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	16,382,807
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 100 Diagonal Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	100 Diagonal Boulevard
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	567,531
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,600,305
Real Estate and Accumulated Depreciation, Carrying Amount of Land	567,531
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	1,600,305
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,167,835
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 40 Logistics Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	40 Logistics Drive
Real Estate and Accumulated Depreciation, Location of Property	Carlisle, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	7,981,850
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,619,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land	7,981,850
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,619,357
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,601,207
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 4047 Perimeter West Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4047 Perimeter West Drive
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,279,004
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	267,512
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,279,004
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	267,512
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,546,516
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 14031 Hollister Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	14031 Hollister Road
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,396,794
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,349,731
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,396,794
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	4,349,731
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,746,525
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 5500 N. Sam Houston Parkway West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5500 N. Sam Houston Parkway West
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,243,541
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,360,651
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,243,541
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	3,360,651
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,604,192
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 4000 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4000 S 26th Street
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	51,784
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,029,705
Real Estate and Accumulated Depreciation, Carrying Amount of Land	51,784
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,029,705
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,081,489
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 4050 S 26th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	4050 S 26th Street
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	46,301
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	5,460,148
Real Estate and Accumulated Depreciation, Carrying Amount of Land	46,301
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	5,460,148
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,506,449
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 5 Crescent Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	5 Crescent Drive
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,765,341
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	22,429,330
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,765,341
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	22,429,330
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	24,194,671
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | 8th & Walnut Streets [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	8th & Walnut Streets
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	734,275
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,281,645
Real Estate and Accumulated Depreciation, Carrying Amount of Land	734,275
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	9,281,645
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	10,015,920
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Development in Progress [Member] | Total Development in Progress [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	27,028,044
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	61,819,568
Real Estate and Accumulated Depreciation, Carrying Amount of Land	27,028,044
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	61,819,568
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	88,847,611
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Land Held for Development [Member] | Perryman Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Perryman Road Land
Real Estate and Accumulated Depreciation, Location of Property	Aberdeen, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	12,052,635
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	279,456
Real Estate and Accumulated Depreciation, Carrying Amount of Land	12,332,091
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	12,332,091
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Land Held for Development [Member] | 2 Womack Drive Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	2 Womack Drive Land
Real Estate and Accumulated Depreciation, Location of Property	Annapolis, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,796,667
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	13,676
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,810,344
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,810,344
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Boca Colannade Yamato Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Boca Colannade Yamato Road
Real Estate and Accumulated Depreciation, Location of Property	Boca Raton, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,039,735
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	566,124
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,605,859
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,605,859
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Land Held for Development [Member] | 12912 Virkler Drive Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	12912 Virkler Drive Land
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	208,646
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	384
Real Estate and Accumulated Depreciation, Carrying Amount of Land	209,030
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	209,030
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2010
Land Held for Development [Member] | Charlotte Distribution Center Land-Lot 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Charlotte Distribution Center Land-Lot 1
Real Estate and Accumulated Depreciation, Location of Property	Charlotte, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	652,844
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	652,844
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	652,844
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Land Held for Development [Member] | Flying Cloud Drive Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Flying Cloud Drive Land
Real Estate and Accumulated Depreciation, Location of Property	Eden Pairie, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,051,631
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	23,887
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,075,518
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,075,518
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Camelback 303 Business Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Camelback 303 Business Center Land
Real Estate and Accumulated Depreciation, Location of Property	Goodyear, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	16,857,556
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,191,071
Real Estate and Accumulated Depreciation, Carrying Amount of Land	20,048,627
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	20,048,627
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Pleasant Ridge Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Pleasant Ridge Road Land
Real Estate and Accumulated Depreciation, Location of Property	Greensboro, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	564,535
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,893,669
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,458,204
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,458,204
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | Southchase Business Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Southchase Business Park Land
Real Estate and Accumulated Depreciation, Location of Property	Greenville, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	98,242
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	88,146
Real Estate and Accumulated Depreciation, Carrying Amount of Land	186,388
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	186,388
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Land Held for Development [Member] | Caliber Ridge Ind. Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Caliber Ridge Ind. Park Land
Real Estate and Accumulated Depreciation, Location of Property	Greer, SC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,297,492
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,621,228
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,918,720
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,918,720
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Hunters Green Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Hunters Green Land
Real Estate and Accumulated Depreciation, Location of Property	Hagerstown, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,489,586
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	8,361,340
Real Estate and Accumulated Depreciation, Carrying Amount of Land	13,850,926
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	13,850,926
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | Lakefront Plaza II Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Lakefront Plaza II Land
Real Estate and Accumulated Depreciation, Location of Property	Hampton, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	229,953
Real Estate and Accumulated Depreciation, Initial Cost of Land	138,101
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	101,157
Real Estate and Accumulated Depreciation, Carrying Amount of Land	239,258
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	239,258
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Land Held for Development [Member] | Ridge Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Ridge Road Land
Real Estate and Accumulated Depreciation, Location of Property	Hanover, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,371,183
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	452,208
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,823,391
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,823,391
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Land Held for Development [Member] | Piedmond Centre Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Piedmond Centre Land
Real Estate and Accumulated Depreciation, Location of Property	High Point, NC
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	913,276
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	914,318
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,827,594
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,827,594
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | Commonwealth Corporate Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Commonwealth Corporate Center Land
Real Estate and Accumulated Depreciation, Location of Property	Horsham, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,043,938
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	25,160
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,069,098
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,069,098
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Land Held for Development [Member] | Beltway 8 @Bammel Bus Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Beltway 8 @Bammel Bus Park Land
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,072,634
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	14,445
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,087,079
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,087,079
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Central Green Land - Tract 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Central Green Land - Tract 5
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,492,547
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	217,069
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,709,616
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,709,616
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Greens Crossing Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Greens Crossing Land
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,476,892
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	49,045
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,525,938
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,525,938
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Hollister Beltway 8 Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Hollister Beltway 8 Land
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	3,641,897
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	9,515
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,651,411
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,651,411
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Land Held for Development [Member] | Rankin Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Rankin Road Land
Real Estate and Accumulated Depreciation, Location of Property	Houston, TX
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	5,756,865
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	162,436
Real Estate and Accumulated Depreciation, Carrying Amount of Land	5,919,301
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	5,919,301
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Noxell Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Noxell Land
Real Estate and Accumulated Depreciation, Location of Property	Hunt Valley, MD
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,040,690
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,173
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,041,863
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,041,863
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Land Held for Development [Member] | 7024 AC Skinner Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	7024 AC Skinner Parkway
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	751,448
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	73,504
Real Estate and Accumulated Depreciation, Carrying Amount of Land	824,952
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	824,952
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Land Held for Development [Member] | Belfort Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Belfort Road
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	492,908
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	87,649
Real Estate and Accumulated Depreciation, Carrying Amount of Land	580,557
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	580,557
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1998
Land Held for Development [Member] | Imeson Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Imeson Road Land
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,153,948
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,053,506
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,207,454
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,207,454
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2008
Land Held for Development [Member] | Liberty Business Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Liberty Business Park Land
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	456,269
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	82,690
Real Estate and Accumulated Depreciation, Carrying Amount of Land	538,959
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	538,959
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Land Held for Development [Member] | Salisbury Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Salisbury Road Land
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,402,337
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	220,472
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,622,809
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,622,809
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Land Held for Development [Member] | Skinner Land Parcel B [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Skinner Land Parcel B
Real Estate and Accumulated Depreciation, Location of Property	Jacksonville, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,295,790
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,231,240
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,527,030
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,527,030
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Land Held for Development [Member] | Kent County, UK [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Kent County, UK
Real Estate and Accumulated Depreciation, Location of Property	Kent County, UK
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	0
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,933,923
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,933,923
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,933,923
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1999
Land Held for Development [Member] | Commodore Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Commodore Business Park
Real Estate and Accumulated Depreciation, Location of Property	Logan, NJ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	792,118
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,194,790
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,986,908
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,986,908
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1995
Land Held for Development [Member] | Quarry Ridge Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Quarry Ridge Land
Real Estate and Accumulated Depreciation, Location of Property	Malvern, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	4,774,994
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	4,962,649
Real Estate and Accumulated Depreciation, Carrying Amount of Land	9,737,643
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	9,737,643
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2001
Land Held for Development [Member] | Miami International Tradeport Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Miami International Tradeport Land
Real Estate and Accumulated Depreciation, Location of Property	Medley, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	17,506,630
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,433,344
Real Estate and Accumulated Depreciation, Carrying Amount of Land	18,939,974
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	18,939,974
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Land Held for Development [Member] | Monarch Towne Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Monarch Towne Center Land
Real Estate and Accumulated Depreciation, Location of Property	Mirarar, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,085,337
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	413,926
Real Estate and Accumulated Depreciation, Carrying Amount of Land	6,499,264
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	6,499,264
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | South 27th Street Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	South 27th Street Land
Real Estate and Accumulated Depreciation, Location of Property	Oak Creek, WI
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,169,232
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,468,138
Real Estate and Accumulated Depreciation, Carrying Amount of Land	4,637,370
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	4,637,370
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | Beachline Industrial Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Beachline Industrial Park Land
Real Estate and Accumulated Depreciation, Location of Property	Orlando, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	365,230
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land	365,230
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	365,230
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | 26th Street North Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	26th Street North Land
Real Estate and Accumulated Depreciation, Location of Property	Philadelphia, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	90,774
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,052,171
Real Estate and Accumulated Depreciation, Carrying Amount of Land	1,142,945
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	1,142,945
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2009
Land Held for Development [Member] | Cotton Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Cotton Center Land
Real Estate and Accumulated Depreciation, Location of Property	Phoenix, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,359,134
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	18,197,359
Real Estate and Accumulated Depreciation, Carrying Amount of Land	19,556,493
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	19,556,493
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Eastport IX [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Eastport IX
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	211,627
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,325
Real Estate and Accumulated Depreciation, Carrying Amount of Land	214,952
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	214,952
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Land Held for Development [Member] | Eastport VIII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Eastport VIII
Real Estate and Accumulated Depreciation, Location of Property	Richmond, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	382,698
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,325
Real Estate and Accumulated Depreciation, Carrying Amount of Land	386,023
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	386,023
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1997
Land Held for Development [Member] | 1315 Brockton Lane North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	1315 Brockton Lane North
Real Estate and Accumulated Depreciation, Location of Property	Rogers, MN
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,165,447
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	243,430
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,408,877
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,408,877
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2011
Land Held for Development [Member] | Woodlands Center Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Woodlands Center Land
Real Estate and Accumulated Depreciation, Location of Property	Sandston, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	148,314
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	21,717
Real Estate and Accumulated Depreciation, Carrying Amount of Land	170,031
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	170,031
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	1996
Land Held for Development [Member] | Northsight Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Northsight Land (LPLP)
Real Estate and Accumulated Depreciation, Location of Property	Scottsdale, AZ
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	6,176,464
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,204,597
Real Estate and Accumulated Depreciation, Carrying Amount of Land	8,381,061
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	8,381,061
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Land Held for Development [Member] | Old Scotland Road Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Old Scotland Road Land
Real Estate and Accumulated Depreciation, Location of Property	Shippensburg, PA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	8,322,686
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	3,298,406
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,621,093
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,621,093
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Bridgeway II Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Bridgeway II Land
Real Estate and Accumulated Depreciation, Location of Property	Suffolk, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	603,391
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	2,025,243
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,628,635
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,628,635
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2005
Land Held for Development [Member] | Suffolk Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Suffolk Land
Real Estate and Accumulated Depreciation, Location of Property	Suffolk, VA
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	2,715,714
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	733,927
Real Estate and Accumulated Depreciation, Carrying Amount of Land	3,449,641
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	3,449,641
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | 6119 W. Linebaugh Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	6119 W. Linebaugh Avenue
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	180,136
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	30,500
Real Estate and Accumulated Depreciation, Carrying Amount of Land	210,635
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	210,635
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2000
Land Held for Development [Member] | Renaissance Park Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Renaissance Park Land
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	1,995,375
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	219,098
Real Estate and Accumulated Depreciation, Carrying Amount of Land	2,214,473
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	2,214,473
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2007
Land Held for Development [Member] | Tampa Triangle Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Description of Property	Tampa Triangle Land
Real Estate and Accumulated Depreciation, Location of Property	Tampa, FL
Real Estate and Accumulated Depreciation, Amount of Encumbrances	0
Real Estate and Accumulated Depreciation, Initial Cost of Land	10,358,826
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	1,186,226
Real Estate and Accumulated Depreciation, Carrying Amount of Land	11,545,052
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	11,545,052
Real Estate and Accumulated Depreciation, Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired or Developed	2006
Land Held for Development [Member] | Total Land Held for Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Amount of Encumbrances	229,953
Real Estate and Accumulated Depreciation, Initial Cost of Land	150,014,419
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements	69,360,662
Real Estate and Accumulated Depreciation, Carrying Amount of Land	219,375,084
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements	0
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements	219,375,084
Real Estate and Accumulated Depreciation, Accumulated Depreciation	$ 0

[1] Denotes property is collateralized under mortgages with Metropolitan Life, LaSalle Bank, Allianz and John Hancock totaling $238.8 million.