Schedule III Properties And Accumulated Depreciation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Real Estate and Accumulated Depreciation [Line Items]
Land, Initial costs	$ 704,616
Acquired ground lease, Initial costs	14,986
Buildings and improvements, Initial costs	4,680,744
Costs capitalized subsequent to acquisition, Improvements	4,479,232
Land, Total costs	693,791
Acquired ground lease, Total costs	14,618
Buildings and improvements, Total costs	9,171,169
Total	9,879,578	8,742,519	6,118,583	5,227,542
Accumulated depreciation and amortization	(1,565,996)	(1,206,017)	(900,044)	(660,700)
Unamortized net premium	1,640
36 NE 2nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	36 NE 2nd Street
Metropolitan Area	Miami
Encumbrances	15,656
Land, Initial costs	1,942
Buildings and improvements, Initial costs	24,184
Costs capitalized subsequent to acquisition, Improvements	9,664
Land, Total costs	1,942
Buildings and improvements, Total costs	33,848
Total	35,790
Accumulated depreciation and amortization	(11,572)
Date of acquisition or construction	2002
2323 Bryan Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2323 Bryan Street
Metropolitan Area	Dallas
Land, Initial costs	1,838
Buildings and improvements, Initial costs	77,604
Costs capitalized subsequent to acquisition, Improvements	43,154
Land, Total costs	1,838
Buildings and improvements, Total costs	120,758
Total	122,596
Accumulated depreciation and amortization	(44,316)
Date of acquisition or construction	2002
6 Braham Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	6 Braham Street
Metropolitan Area	London
Land, Initial costs	3,776
Buildings and improvements, Initial costs	28,166
Costs capitalized subsequent to acquisition, Improvements	2,779
Land, Total costs	4,154
Buildings and improvements, Total costs	30,567
Total	34,721
Accumulated depreciation and amortization	(9,613)
Date of acquisition or construction	2002
300 Boulevard East [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	300 Boulevard East
Metropolitan Area	NY Metro
Encumbrances	40,147
Land, Initial costs	5,140
Buildings and improvements, Initial costs	48,526
Costs capitalized subsequent to acquisition, Improvements	60,471
Land, Total costs	5,140
Buildings and improvements, Total costs	108,997
Total	114,137
Accumulated depreciation and amortization	(44,426)
Date of acquisition or construction	2002
2334 Lundy Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2334 Lundy Place
Metropolitan Area	Silicon Valley
Encumbrances	37,930
Land, Initial costs	3,607
Buildings and improvements, Initial costs	23,008
Costs capitalized subsequent to acquisition, Improvements	66
Land, Total costs	3,607
Buildings and improvements, Total costs	23,074
Total	26,681
Accumulated depreciation and amortization	(8,125)
Date of acquisition or construction	2002
34551 Ardenwood Boulevard 1-4 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	34551 Ardenwood Boulevard 1-4
Metropolitan Area	Silicon Valley
Encumbrances	52,151
Land, Initial costs	15,330
Buildings and improvements, Initial costs	32,419
Costs capitalized subsequent to acquisition, Improvements	3,712
Land, Total costs	15,330
Buildings and improvements, Total costs	36,131
Total	51,461
Accumulated depreciation and amortization	(13,307)
Date of acquisition or construction	2003
2440 Marsh Lane [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2440 Marsh Lane
Metropolitan Area	Dallas
Land, Initial costs	1,477
Buildings and improvements, Initial costs	10,330
Costs capitalized subsequent to acquisition, Improvements	71,012
Land, Total costs	1,477
Buildings and improvements, Total costs	81,342
Total	82,819
Accumulated depreciation and amortization	(35,013)
Date of acquisition or construction	2003
2010 East Centennial Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2010 East Centennial Circle
Metropolitan Area	Phoenix
Acquired ground lease, Initial costs	1,477
Buildings and improvements, Initial costs	16,472
Costs capitalized subsequent to acquisition, Improvements	(103)
Acquired ground lease, Total costs	1,322
Buildings and improvements, Total costs	16,524
Total	17,846
Accumulated depreciation and amortization	(5,405)
Date of acquisition or construction	2003
375 Riverside Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	375 Riverside Parkway
Metropolitan Area	Atlanta
Land, Initial costs	1,250
Buildings and improvements, Initial costs	11,578
Costs capitalized subsequent to acquisition, Improvements	30,963
Land, Total costs	1,250
Buildings and improvements, Total costs	42,541
Total	43,791
Accumulated depreciation and amortization	(16,671)
Date of acquisition or construction	2003
3300 East Birch Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3300 East Birch Street
Metropolitan Area	Los Angeles
Encumbrances	6,820
Land, Initial costs	3,777
Buildings and improvements, Initial costs	4,611
Costs capitalized subsequent to acquisition, Improvements	569
Land, Total costs	3,777
Buildings and improvements, Total costs	5,180
Total	8,957
Accumulated depreciation and amortization	(2,606)
Date of acquisition or construction	2003
47700 Kato Road & 1055 Page Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	47700 Kato Road & 1055 Page Avenue
Metropolitan Area	Silicon Valley
Land, Initial costs	5,272
Buildings and improvements, Initial costs	20,166
Costs capitalized subsequent to acquisition, Improvements	3,037
Land, Total costs	5,272
Buildings and improvements, Total costs	23,203
Total	28,475
Accumulated depreciation and amortization	(5,331)
Date of acquisition or construction	2003
4849 Alpha Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4849 Alpha Road
Metropolitan Area	Dallas
Encumbrances	9,608
Land, Initial costs	2,983
Buildings and improvements, Initial costs	10,650
Costs capitalized subsequent to acquisition, Improvements	43,363
Land, Total costs	2,983
Buildings and improvements, Total costs	54,013
Total	56,996
Accumulated depreciation and amortization	(13,510)
Date of acquisition or construction	2004
600 West Seventh Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600 West Seventh Street
Metropolitan Area	Los Angeles
Encumbrances	49,548
Land, Initial costs	18,478
Buildings and improvements, Initial costs	50,824
Costs capitalized subsequent to acquisition, Improvements	53,306
Land, Total costs	18,478
Buildings and improvements, Total costs	104,130
Total	122,608
Accumulated depreciation and amortization	(41,827)
Date of acquisition or construction	2004
2045 & 2055 LaFayette Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2045 & 2055 LaFayette Street
Metropolitan Area	Silicon Valley
Encumbrances	63,623
Land, Initial costs	6,065
Buildings and improvements, Initial costs	43,817
Costs capitalized subsequent to acquisition, Improvements	19
Land, Total costs	6,065
Buildings and improvements, Total costs	43,836
Total	49,901
Accumulated depreciation and amortization	(13,478)
Date of acquisition or construction	2004
100 & 200 Quannapowitt Pkwy [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	100 & 200 Quannapowitt Parkway
Metropolitan Area	Boston
Encumbrances	31,139
Land, Initial costs	12,416
Buildings and improvements, Initial costs	26,154
Costs capitalized subsequent to acquisition, Improvements	67,279
Land, Total costs	12,416
Buildings and improvements, Total costs	93,433
Total	105,849
Accumulated depreciation and amortization	(16,590)
Date of acquisition or construction	2004
11830 Webb Chapel Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11830 Webb Chapel Road
Metropolitan Area	Dallas
Encumbrances	29,596
Land, Initial costs	5,881
Buildings and improvements, Initial costs	34,473
Costs capitalized subsequent to acquisition, Improvements	1,885
Land, Total costs	5,881
Buildings and improvements, Total costs	36,358
Total	42,239
Accumulated depreciation and amortization	(12,128)
Date of acquisition or construction	2004
150 South First Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	150 South First Street
Metropolitan Area	Silicon Valley
Encumbrances	50,097
Land, Initial costs	2,068
Buildings and improvements, Initial costs	29,214
Costs capitalized subsequent to acquisition, Improvements	1,185
Land, Total costs	2,068
Buildings and improvements, Total costs	30,399
Total	32,467
Accumulated depreciation and amortization	(8,720)
Date of acquisition or construction	2004
3065 Gold Camp Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3065 Gold Camp Drive
Metropolitan Area	Sacramento
Land, Initial costs	1,886
Buildings and improvements, Initial costs	10,686
Costs capitalized subsequent to acquisition, Improvements	17,553
Land, Total costs	1,886
Buildings and improvements, Total costs	28,239
Total	30,125
Accumulated depreciation and amortization	(5,778)
Date of acquisition or construction	2004
200 Paul Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	200 Paul Avenue
Metropolitan Area	San Francisco
Encumbrances	70,713
Land, Initial costs	14,427
Buildings and improvements, Initial costs	75,777
Costs capitalized subsequent to acquisition, Improvements	61,597
Land, Total costs	14,427
Buildings and improvements, Total costs	137,374
Total	151,801
Accumulated depreciation and amortization	(48,712)
Date of acquisition or construction	2004
1100 Space Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1100 Space Park Drive
Metropolitan Area	Silicon Valley
Encumbrances	52,115
Land, Initial costs	5,130
Buildings and improvements, Initial costs	18,206
Costs capitalized subsequent to acquisition, Improvements	26,869
Land, Total costs	5,130
Buildings and improvements, Total costs	45,075
Total	50,205
Accumulated depreciation and amortization	(19,105)
Date of acquisition or construction	2004
3015 Winona Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3015 Winona Avenue
Metropolitan Area	Los Angeles
Land, Initial costs	6,534
Buildings and improvements, Initial costs	8,356
Costs capitalized subsequent to acquisition, Improvements	5
Land, Total costs	6,534
Buildings and improvements, Total costs	8,361
Total	14,895
Accumulated depreciation and amortization	(2,917)
Date of acquisition or construction	2004
833 Chestnut Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	833 Chestnut Street
Metropolitan Area	Philadelphia
Land, Initial costs	5,738
Buildings and improvements, Initial costs	42,249
Costs capitalized subsequent to acquisition, Improvements	57,199
Land, Total costs	5,738
Buildings and improvements, Total costs	99,448
Total	105,186
Accumulated depreciation and amortization	(41,297)
Date of acquisition or construction	2005
1125 Energy Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1125 Energy Park Drive
Metropolitan Area	Minneapolis
Land, Initial costs	2,775
Buildings and improvements, Initial costs	10,761
Costs capitalized subsequent to acquisition, Improvements	188
Land, Total costs	2,775
Buildings and improvements, Total costs	10,949
Total	13,724
Accumulated depreciation and amortization	(3,625)
Date of acquisition or construction	2005
350 East Cermak Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	350 East Cermak Road
Metropolitan Area	Chicago
Land, Initial costs	8,466
Buildings and improvements, Initial costs	103,232
Costs capitalized subsequent to acquisition, Improvements	220,134
Land, Total costs	8,620
Buildings and improvements, Total costs	323,212
Total	331,832
Accumulated depreciation and amortization	(121,556)
Date of acquisition or construction	2005
8534 Concord Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8534 Concord Center Drive
Metropolitan Area	Denver
Land, Initial costs	2,181
Buildings and improvements, Initial costs	11,561
Costs capitalized subsequent to acquisition, Improvements	47
Land, Total costs	2,181
Buildings and improvements, Total costs	11,608
Total	13,789
Accumulated depreciation and amortization	(4,090)
Date of acquisition or construction	2005
2401 Walsh Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2401 Walsh Street
Metropolitan Area	Silicon Valley
Land, Initial costs	5,775
Buildings and improvements, Initial costs	19,267
Costs capitalized subsequent to acquisition, Improvements	36
Land, Total costs	5,775
Buildings and improvements, Total costs	19,303
Total	25,078
Accumulated depreciation and amortization	(5,614)
Date of acquisition or construction	2005
2403 Walsh Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2403 Walsh Street
Metropolitan Area	Silicon Valley
Land, Initial costs	5,514
Buildings and improvements, Initial costs	11,695
Costs capitalized subsequent to acquisition, Improvements	38
Land, Total costs	5,514
Buildings and improvements, Total costs	11,733
Total	17,247
Accumulated depreciation and amortization	(3,638)
Date of acquisition or construction	2005
200 North Nash Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	200 North Nash Street
Metropolitan Area	Los Angeles
Land, Initial costs	4,562
Buildings and improvements, Initial costs	12,503
Costs capitalized subsequent to acquisition, Improvements	221
Land, Total costs	4,562
Buildings and improvements, Total costs	12,724
Total	17,286
Accumulated depreciation and amortization	(4,264)
Date of acquisition or construction	2005
731 East Trade Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	731 East Trade Street
Metropolitan Area	Charlotte
Encumbrances	4,799
Land, Initial costs	1,748
Buildings and improvements, Initial costs	5,727
Costs capitalized subsequent to acquisition, Improvements	248
Land, Total costs	1,748
Buildings and improvements, Total costs	5,975
Total	7,723
Accumulated depreciation and amortization	(1,649)
Date of acquisition or construction	2005
Unamortized net premium	613
113 North Myers [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	113 North Myers
Metropolitan Area	Charlotte
Land, Initial costs	1,098
Buildings and improvements, Initial costs	3,127
Costs capitalized subsequent to acquisition, Improvements	1,893
Land, Total costs	1,098
Buildings and improvements, Total costs	5,020
Total	6,118
Accumulated depreciation and amortization	(1,646)
Date of acquisition or construction	2005
125 North Myers [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	125 North Myers
Metropolitan Area	Charlotte
Land, Initial costs	1,271
Buildings and improvements, Initial costs	3,738
Costs capitalized subsequent to acquisition, Improvements	6,174
Land, Total costs	1,271
Buildings and improvements, Total costs	9,912
Total	11,183
Accumulated depreciation and amortization	(5,162)
Date of acquisition or construction	2005
Paul van Vlissingenstraat 16 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Paul van Vlissingenstraat 16
Metropolitan Area	Amsterdam
Buildings and improvements, Initial costs	15,255
Costs capitalized subsequent to acquisition, Improvements	33,301
Buildings and improvements, Total costs	48,556
Total	48,556
Accumulated depreciation and amortization	(10,434)
Date of acquisition or construction	2005
600-780 S. Federal [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600-780 S. Federal
Metropolitan Area	Chicago
Land, Initial costs	7,849
Buildings and improvements, Initial costs	27,881
Costs capitalized subsequent to acquisition, Improvements	32,147
Land, Total costs	7,849
Buildings and improvements, Total costs	60,028
Total	67,877
Accumulated depreciation and amortization	(10,137)
Date of acquisition or construction	2005
115 Second Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	115 Second Avenue
Metropolitan Area	Boston
Land, Initial costs	1,691
Buildings and improvements, Initial costs	12,569
Costs capitalized subsequent to acquisition, Improvements	10,146
Land, Total costs	1,691
Buildings and improvements, Total costs	22,715
Total	24,406
Accumulated depreciation and amortization	(10,570)
Date of acquisition or construction	2005
Chemin de l'Epinglier 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Chemin de l'Epinglier 2
Metropolitan Area	Geneva
Buildings and improvements, Initial costs	20,071
Costs capitalized subsequent to acquisition, Improvements	3,319
Buildings and improvements, Total costs	23,390
Total	23,390
Accumulated depreciation and amortization	(6,560)
Date of acquisition or construction	2005
251 Exchange Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	251 Exchange Place
Metropolitan Area	N. Virginia
Land, Initial costs	1,622
Buildings and improvements, Initial costs	10,425
Costs capitalized subsequent to acquisition, Improvements	304
Land, Total costs	1,622
Buildings and improvements, Total costs	10,729
Total	12,351
Accumulated depreciation and amortization	(3,467)
Date of acquisition or construction	2005
7500 Metro Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	7500 Metro Center Drive
Metropolitan Area	Austin
Land, Initial costs	1,177
Buildings and improvements, Initial costs	4,877
Costs capitalized subsequent to acquisition, Improvements	60,558
Land, Total costs	1,177
Buildings and improvements, Total costs	65,435
Total	66,612
Accumulated depreciation and amortization	(1,900)
Date of acquisition or construction	2005
7620 Metro Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	7620 Metro Center Drive
Metropolitan Area	Austin
Land, Initial costs	510
Buildings and improvements, Initial costs	6,760
Costs capitalized subsequent to acquisition, Improvements	422
Land, Total costs	510
Buildings and improvements, Total costs	7,182
Total	7,692
Accumulated depreciation and amortization	(1,907)
Date of acquisition or construction	2005
3 Corporate Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3 Corporate Place
Metropolitan Area	NY Metro
Land, Initial costs	2,124
Buildings and improvements, Initial costs	12,678
Costs capitalized subsequent to acquisition, Improvements	95,783
Land, Total costs	2,124
Buildings and improvements, Total costs	108,461
Total	110,585
Accumulated depreciation and amortization	(51,194)
Date of acquisition or construction	2005
4025 Midway Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4025 Midway Road
Metropolitan Area	Dallas
Land, Initial costs	2,196
Buildings and improvements, Initial costs	14,037
Costs capitalized subsequent to acquisition, Improvements	27,960
Land, Total costs	2,196
Buildings and improvements, Total costs	41,997
Total	44,193
Accumulated depreciation and amortization	(18,593)
Date of acquisition or construction	2006
Clonshaugh Industrial Estate I [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Clonshaugh Industrial Estate
Metropolitan Area	Dublin
Acquired ground lease, Initial costs	1,444
Buildings and improvements, Initial costs	5,569
Costs capitalized subsequent to acquisition, Improvements	3,454
Acquired ground lease, Total costs	114
Buildings and improvements, Total costs	10,353
Total	10,467
Accumulated depreciation and amortization	(4,541)
Date of acquisition or construction	2006
6800 Millcreek Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	6800 Millcreek Drive
Metropolitan Area	Toronto
Land, Initial costs	1,657
Buildings and improvements, Initial costs	11,352
Costs capitalized subsequent to acquisition, Improvements	2,278
Land, Total costs	1,657
Buildings and improvements, Total costs	13,630
Total	15,287
Accumulated depreciation and amortization	(4,184)
Date of acquisition or construction	2006
101 Aquila Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	101 Aquila Way
Metropolitan Area	Atlanta
Land, Initial costs	1,480
Buildings and improvements, Initial costs	34,797
Costs capitalized subsequent to acquisition, Improvements	45
Land, Total costs	1,480
Buildings and improvements, Total costs	34,842
Total	36,322
Accumulated depreciation and amortization	(10,143)
Date of acquisition or construction	2006
12001 North Freeway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	12001 North Freeway
Metropolitan Area	Houston
Land, Initial costs	6,965
Buildings and improvements, Initial costs	23,492
Costs capitalized subsequent to acquisition, Improvements	134,505
Land, Total costs	6,965
Buildings and improvements, Total costs	157,997
Total	164,962
Accumulated depreciation and amortization	(13,119)
Date of acquisition or construction	2006
120 E Van Buren [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	120 E Van Buren
Metropolitan Area	Phoenix
Land, Initial costs	4,524
Buildings and improvements, Initial costs	157,822
Costs capitalized subsequent to acquisition, Improvements	103,284
Land, Total costs	4,524
Buildings and improvements, Total costs	261,106
Total	265,630
Accumulated depreciation and amortization	(75,472)
Date of acquisition or construction	2006
Gyroscoopweg 2E-2F [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Gyroscoopweg 2E-2F
Metropolitan Area	Amsterdam
Buildings and improvements, Initial costs	13,450
Costs capitalized subsequent to acquisition, Improvements	951
Buildings and improvements, Total costs	14,401
Total	14,401
Accumulated depreciation and amortization	(3,903)
Date of acquisition or construction	2006
Clonshaugh Industrial Estate II [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Clonshaugh Industrial Estate II
Metropolitan Area	Dublin
Costs capitalized subsequent to acquisition, Improvements	91,862
Buildings and improvements, Total costs	91,862
Total	91,862
Accumulated depreciation and amortization	(29,342)
Date of acquisition or construction	2006
600 Winter Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600 Winter Street
Metropolitan Area	Boston
Land, Initial costs	1,429
Buildings and improvements, Initial costs	6,228
Costs capitalized subsequent to acquisition, Improvements	456
Land, Total costs	1,429
Buildings and improvements, Total costs	6,684
Total	8,113
Accumulated depreciation and amortization	(1,392)
Date of acquisition or construction	2006
2300 NW 89th Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2300 NW 89th Place
Metropolitan Area	Miami
Land, Initial costs	1,022
Buildings and improvements, Initial costs	3,767
Costs capitalized subsequent to acquisition, Improvements	18
Land, Total costs	1,022
Buildings and improvements, Total costs	3,785
Total	4,807
Accumulated depreciation and amortization	(1,156)
Date of acquisition or construction	2006
2055 East Technology Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2055 East Technology Circle
Metropolitan Area	Phoenix
Buildings and improvements, Initial costs	8,519
Costs capitalized subsequent to acquisition, Improvements	27,130
Buildings and improvements, Total costs	35,649
Total	35,649
Accumulated depreciation and amortization	(15,954)
Date of acquisition or construction	2006
114 Rue Ambroise Croizat [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	114 Rue Ambroise Croizat
Metropolitan Area	Paris
Land, Initial costs	12,261
Buildings and improvements, Initial costs	34,051
Costs capitalized subsequent to acquisition, Improvements	88,043
Land, Total costs	12,062
Buildings and improvements, Total costs	122,293
Total	134,355
Accumulated depreciation and amortization	(33,418)
Date of acquisition or construction	2006
Unit 9, Blanchardstown Corporate Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit 9, Blanchardstown Corporate Park
Metropolitan Area	Dublin
Land, Initial costs	1,927
Buildings and improvements, Initial costs	40,024
Costs capitalized subsequent to acquisition, Improvements	26,403
Land, Total costs	1,990
Buildings and improvements, Total costs	66,364
Total	68,354
Accumulated depreciation and amortization	(15,966)
Date of acquisition or construction	2006
111 8th Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	111 8th Avenue
Metropolitan Area	NY Metro
Buildings and improvements, Initial costs	17,688
Costs capitalized subsequent to acquisition, Improvements	14,736
Buildings and improvements, Total costs	32,424
Total	32,424
Accumulated depreciation and amortization	(23,556)
Date of acquisition or construction	2006
1807 Michael Faraday Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1807 Michael Faraday Court
Metropolitan Area	N. Virginia
Land, Initial costs	1,499
Buildings and improvements, Initial costs	4,578
Costs capitalized subsequent to acquisition, Improvements	1,908
Land, Total costs	1,499
Buildings and improvements, Total costs	6,486
Total	7,985
Accumulated depreciation and amortization	(2,245)
Date of acquisition or construction	2006
8100 Boone Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8100 Boone Boulevard
Metropolitan Area	N. Virginia
Buildings and improvements, Initial costs	158
Costs capitalized subsequent to acquisition, Improvements	1,046
Buildings and improvements, Total costs	1,204
Total	1,204
Accumulated depreciation and amortization	(939)
Date of acquisition or construction	2006
21110 Ridgetop Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	21110 Ridgetop Circle
Metropolitan Area	N. Virginia
Land, Initial costs	2,934
Buildings and improvements, Initial costs	14,311
Costs capitalized subsequent to acquisition, Improvements	1,307
Land, Total costs	2,934
Buildings and improvements, Total costs	15,618
Total	18,552
Accumulated depreciation and amortization	(3,732)
Date of acquisition or construction	2007
3011 Lafayette Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3011 Lafayette Street
Metropolitan Area	Silicon Valley
Land, Initial costs	3,354
Buildings and improvements, Initial costs	10,305
Costs capitalized subsequent to acquisition, Improvements	48,750
Land, Total costs	3,354
Buildings and improvements, Total costs	59,055
Total	62,409
Accumulated depreciation and amortization	(29,543)
Date of acquisition or construction	2007
44470 Chilum Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	44470 Chilum Place
Metropolitan Area	N. Virginia
Land, Initial costs	3,531
Buildings and improvements, Initial costs	37,360
Costs capitalized subsequent to acquisition, Improvements	1
Land, Total costs	3,531
Buildings and improvements, Total costs	37,361
Total	40,892
Accumulated depreciation and amortization	(7,013)
Date of acquisition or construction	2007
43881 Devin Shafron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43881 Devin Shafron Drive
Metropolitan Area	N. Virginia
Land, Initial costs	4,653
Buildings and improvements, Initial costs	23,631
Costs capitalized subsequent to acquisition, Improvements	92,369
Land, Total costs	4,653
Buildings and improvements, Total costs	116,000
Total	120,653
Accumulated depreciation and amortization	(51,622)
Date of acquisition or construction	2007
43831 Devin Shafron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43831 Devin Shafron Drive
Metropolitan Area	N. Virginia
Land, Initial costs	3,027
Buildings and improvements, Initial costs	16,247
Costs capitalized subsequent to acquisition, Improvements	602
Land, Total costs	3,027
Buildings and improvements, Total costs	16,849
Total	19,876
Accumulated depreciation and amortization	(3,476)
Date of acquisition or construction	2007
43791 Devin Shafron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43791 Devin Shafron Drive
Metropolitan Area	N. Virginia
Land, Initial costs	3,490
Buildings and improvements, Initial costs	17,444
Costs capitalized subsequent to acquisition, Improvements	74,642
Land, Total costs	3,490
Buildings and improvements, Total costs	92,086
Total	95,576
Accumulated depreciation and amortization	(23,513)
Date of acquisition or construction	2007
Mundells Roundabout [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Mundells Roundabout
Metropolitan Area	London
Land, Initial costs	31,354
Costs capitalized subsequent to acquisition, Improvements	63,802
Land, Total costs	26,391
Buildings and improvements, Total costs	68,764
Total	95,155
Accumulated depreciation and amortization	(9,200)
Date of acquisition or construction	2007
210 N Tucker [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	210 N Tucker
Metropolitan Area	St. Louis
Land, Initial costs	2,042
Buildings and improvements, Initial costs	17,223
Costs capitalized subsequent to acquisition, Improvements	91,123
Land, Total costs	2,042
Buildings and improvements, Total costs	108,346
Total	110,388
Accumulated depreciation and amortization	(8,160)
Date of acquisition or construction	2007
900 Walnut Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	900 Walnut Street
Metropolitan Area	St. Louis
Land, Initial costs	1,791
Buildings and improvements, Initial costs	29,516
Costs capitalized subsequent to acquisition, Improvements	3,798
Land, Total costs	1,791
Buildings and improvements, Total costs	33,314
Total	35,105
Accumulated depreciation and amortization	(6,818)
Date of acquisition or construction	2007
1 Savvis Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 Savvis Parkway
Metropolitan Area	St. Louis
Land, Initial costs	3,301
Buildings and improvements, Initial costs	20,639
Costs capitalized subsequent to acquisition, Improvements	238
Land, Total costs	3,301
Buildings and improvements, Total costs	20,877
Total	24,178
Accumulated depreciation and amortization	(4,176)
Date of acquisition or construction	2007
1500 Space Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1500 Space Park Drive
Metropolitan Area	Silicon Valley
Land, Initial costs	6,732
Buildings and improvements, Initial costs	6,325
Costs capitalized subsequent to acquisition, Improvements	46,168
Land, Total costs	4,106
Buildings and improvements, Total costs	55,119
Total	59,225
Accumulated depreciation and amortization	(29,414)
Date of acquisition or construction	2007
Cressex 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cressex 1
Metropolitan Area	London
Encumbrances	28,583
Land, Initial costs	3,629
Buildings and improvements, Initial costs	9,036
Costs capitalized subsequent to acquisition, Improvements	27,736
Land, Total costs	3,183
Buildings and improvements, Total costs	37,218
Total	40,401
Accumulated depreciation and amortization	(13,186)
Date of acquisition or construction	2007
Naritaweg 52 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Naritaweg 52
Metropolitan Area	Amsterdam
Acquired ground lease, Initial costs	1,192
Buildings and improvements, Initial costs	23,441
Costs capitalized subsequent to acquisition, Improvements	(1,215)
Acquired ground lease, Total costs	1,124
Buildings and improvements, Total costs	22,294
Total	23,418
Accumulated depreciation and amortization	(4,101)
Date of acquisition or construction	2007
1 St. Anne's Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 St. Anne's Boulevard
Metropolitan Area	London
Land, Initial costs	1,490
Buildings and improvements, Initial costs	1,045
Costs capitalized subsequent to acquisition, Improvements	(287)
Land, Total costs	1,267
Buildings and improvements, Total costs	981
Total	2,248
Accumulated depreciation and amortization	(150)
Date of acquisition or construction	2007
2 St. Anne's Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2 St. Anne's Boulevard
Metropolitan Area	London
Land, Initial costs	922
Buildings and improvements, Initial costs	695
Costs capitalized subsequent to acquisition, Improvements	43,672
Land, Total costs	844
Buildings and improvements, Total costs	44,445
Total	45,289
Accumulated depreciation and amortization	(2,479)
Date of acquisition or construction	2007
3 St. Anne's Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3 St. Anne's Boulevard
Metropolitan Area	London
Land, Initial costs	22,079
Buildings and improvements, Initial costs	16,351
Costs capitalized subsequent to acquisition, Improvements	111,729
Land, Total costs	18,610
Buildings and improvements, Total costs	131,549
Total	150,159
Accumulated depreciation and amortization	(28,064)
Date of acquisition or construction	2007
365 South Randolphville Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	365 South Randolphville Road
Metropolitan Area	NY Metro
Land, Initial costs	3,019
Buildings and improvements, Initial costs	17,404
Costs capitalized subsequent to acquisition, Improvements	226,767
Land, Total costs	3,019
Buildings and improvements, Total costs	244,171
Total	247,190
Accumulated depreciation and amortization	(32,906)
Date of acquisition or construction	2008
701 & 717 Leonard Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	701 & 717 Leonard Street
Metropolitan Area	Dallas
Land, Initial costs	2,165
Buildings and improvements, Initial costs	9,934
Costs capitalized subsequent to acquisition, Improvements	448
Land, Total costs	2,165
Buildings and improvements, Total costs	10,382
Total	12,547
Accumulated depreciation and amortization	(1,535)
Date of acquisition or construction	2008
650 Randolph Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	650 Randolph Road
Metropolitan Area	NY Metro
Land, Initial costs	3,986
Buildings and improvements, Initial costs	6,883
Costs capitalized subsequent to acquisition, Improvements	5,541
Land, Total costs	3,986
Buildings and improvements, Total costs	12,424
Total	16,410
Accumulated depreciation and amortization	(1,154)
Date of acquisition or construction	2008
Manchester Technopark [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Manchester Technopark
Metropolitan Area	Manchester
Encumbrances	8,695
Buildings and improvements, Initial costs	23,918
Costs capitalized subsequent to acquisition, Improvements	(3,567)
Buildings and improvements, Total costs	20,351
Total	20,351
Accumulated depreciation and amortization	(3,229)
Date of acquisition or construction	2008
1201 Comstock Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1201 Comstock Street
Metropolitan Area	Silicon Valley
Land, Initial costs	2,093
Buildings and improvements, Initial costs	1,606
Costs capitalized subsequent to acquisition, Improvements	26,244
Land, Total costs	3,398
Buildings and improvements, Total costs	26,545
Total	29,943
Accumulated depreciation and amortization	(10,061)
Date of acquisition or construction	2008
1550 Space Park Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1550 Space Park Drive
Metropolitan Area	Silicon Valley
Land, Initial costs	2,301
Buildings and improvements, Initial costs	766
Costs capitalized subsequent to acquisition, Improvements	1,732
Land, Total costs	1,926
Buildings and improvements, Total costs	2,873
Total	4,799
Date of acquisition or construction	2008
1525 Comstock Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1525 Comstock Street
Metropolitan Area	Silicon Valley
Land, Initial costs	2,293
Buildings and improvements, Initial costs	16,216
Costs capitalized subsequent to acquisition, Improvements	29,322
Land, Total costs	2,061
Buildings and improvements, Total costs	45,770
Total	47,831
Accumulated depreciation and amortization	(16,052)
Date of acquisition or construction	2008
43915 Devin Shafron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43915 Devin Shafron Drive
Metropolitan Area	N. Virginia
Land, Initial costs	6,927
Costs capitalized subsequent to acquisition, Improvements	84,470
Land, Total costs	6,927
Buildings and improvements, Total costs	84,470
Total	91,397
Accumulated depreciation and amortization	(25,810)
Date of acquisition or construction	2009
43830 Devin Shafron Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43830 Devin Shafron Drive
Metropolitan Area	N. Virginia
Land, Initial costs	5,509
Costs capitalized subsequent to acquisition, Improvements	77,172
Land, Total costs	5,509
Buildings and improvements, Total costs	77,172
Total	82,681
Accumulated depreciation and amortization	(9,543)
Date of acquisition or construction	2009
1232 Alma Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1232 Alma Road
Metropolitan Area	Dallas
Land, Initial costs	2,267
Buildings and improvements, Initial costs	3,740
Costs capitalized subsequent to acquisition, Improvements	61,203
Land, Total costs	2,267
Buildings and improvements, Total costs	64,943
Total	67,210
Accumulated depreciation and amortization	(15,254)
Date of acquisition or construction	2009
900 Quality Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	900 Quality Way
Metropolitan Area	Dallas
Land, Initial costs	1,446
Buildings and improvements, Initial costs	1,659
Costs capitalized subsequent to acquisition, Improvements	37,818
Land, Total costs	1,446
Buildings and improvements, Total costs	39,477
Total	40,923
Accumulated depreciation and amortization	(4,264)
Date of acquisition or construction	2009
1400 N. Bowser Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1400 N. Bowser Road
Metropolitan Area	Dallas
Land, Initial costs	2,041
Buildings and improvements, Initial costs	3,389
Costs capitalized subsequent to acquisition, Improvements	355
Land, Total costs	2,041
Buildings and improvements, Total costs	3,744
Total	5,785
Date of acquisition or construction	2009
1301 International Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1301 International Parkway
Metropolitan Area	Dallas
Land, Initial costs	333
Buildings and improvements, Initial costs	344
Costs capitalized subsequent to acquisition, Improvements	14
Land, Total costs	333
Buildings and improvements, Total costs	358
Total	691
Date of acquisition or construction	2009
908 Quality Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	908 Quality Way
Metropolitan Area	Dallas
Land, Initial costs	6,730
Buildings and improvements, Initial costs	4,493
Costs capitalized subsequent to acquisition, Improvements	19,172
Land, Total costs	1,670
Buildings and improvements, Total costs	28,725
Total	30,395
Accumulated depreciation and amortization	(6,549)
Date of acquisition or construction	2009
904 Quality Way [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	904 Quality Way
Metropolitan Area	Dallas
Land, Initial costs	760
Buildings and improvements, Initial costs	744
Costs capitalized subsequent to acquisition, Improvements	6,870
Land, Total costs	760
Buildings and improvements, Total costs	7,614
Total	8,374
Accumulated depreciation and amortization	(244)
Date of acquisition or construction	2009
905 Security Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	905 Security Row
Metropolitan Area	Dallas
Land, Initial costs	4,056
Buildings and improvements, Initial costs	1,553
Costs capitalized subsequent to acquisition, Improvements	103
Land, Total costs	4,056
Buildings and improvements, Total costs	1,656
Total	5,712
Date of acquisition or construction	2009
1202 Alma Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1202 Alma Road
Metropolitan Area	Dallas
Costs capitalized subsequent to acquisition, Improvements	40,986
Land, Total costs	1,899
Buildings and improvements, Total costs	39,087
Total	40,986
Accumulated depreciation and amortization	(3,371)
Date of acquisition or construction	2009
1350 Duane [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1350 Duane
Metropolitan Area	Silicon Valley
Land, Initial costs	7,081
Buildings and improvements, Initial costs	69,817
Costs capitalized subsequent to acquisition, Improvements	60
Land, Total costs	7,081
Buildings and improvements, Total costs	69,877
Total	76,958
Accumulated depreciation and amortization	(7,550)
Date of acquisition or construction	2009
45901 & 45845 Nokes Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	45901 & 45845 Nokes Boulevard
Metropolitan Area	N. Virginia
Land, Initial costs	3,437
Buildings and improvements, Initial costs	28,785
Costs capitalized subsequent to acquisition, Improvements	849
Land, Total costs	3,437
Buildings and improvements, Total costs	29,634
Total	33,071
Accumulated depreciation and amortization	(3,265)
Date of acquisition or construction	2009
21561 & 21571 Beaumeade Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	21561 & 21571 Beaumeade Circle
Metropolitan Area	N. Virginia
Land, Initial costs	3,966
Buildings and improvements, Initial costs	24,211
Costs capitalized subsequent to acquisition, Improvements	44
Land, Total costs	3,966
Buildings and improvements, Total costs	24,255
Total	28,221
Accumulated depreciation and amortization	(2,508)
Date of acquisition or construction	2009
60 & 80 Merritt [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	60 & 80 Merritt
Metropolitan Area	NY Metro
Land, Initial costs	3,418
Buildings and improvements, Initial costs	71,477
Costs capitalized subsequent to acquisition, Improvements	88,591
Land, Total costs	3,418
Buildings and improvements, Total costs	160,068
Total	163,486
Accumulated depreciation and amortization	(10,898)
Date of acquisition or construction	2010
55 Middlesex [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	55 Middlesex
Metropolitan Area	Boston
Land, Initial costs	9,975
Buildings and improvements, Initial costs	68,363
Costs capitalized subsequent to acquisition, Improvements	6,896
Land, Total costs	9,975
Buildings and improvements, Total costs	75,259
Total	85,234
Accumulated depreciation and amortization	(9,633)
Date of acquisition or construction	2010
128 First Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	128 First Avenue
Metropolitan Area	Boston
Land, Initial costs	5,465
Buildings and improvements, Initial costs	185,348
Costs capitalized subsequent to acquisition, Improvements	25,669
Land, Total costs	5,465
Buildings and improvements, Total costs	211,017
Total	216,482
Accumulated depreciation and amortization	(28,232)
Date of acquisition or construction	2010
Cateringweg 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cateringweg 5
Metropolitan Area	Amsterdam
Acquired ground lease, Initial costs	3,518
Buildings and improvements, Initial costs	3,517
Costs capitalized subsequent to acquisition, Improvements	48,226
Acquired ground lease, Total costs	3,950
Buildings and improvements, Total costs	51,311
Total	55,261
Accumulated depreciation and amortization	(3,410)
Date of acquisition or construction	2010
1725 Comstock Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1725 Comstock Street
Metropolitan Area	Silicon Valley
Land, Initial costs	3,274
Buildings and improvements, Initial costs	6,567
Costs capitalized subsequent to acquisition, Improvements	37,614
Land, Total costs	3,274
Buildings and improvements, Total costs	44,181
Total	47,455
Accumulated depreciation and amortization	(9,399)
Date of acquisition or construction	2010
3105 And 3115 Alfred Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3015 and 3115 Alfred Street
Metropolitan Area	Silicon Valley
Land, Initial costs	6,533
Buildings and improvements, Initial costs	3,725
Costs capitalized subsequent to acquisition, Improvements	56,783
Land, Total costs	6,533
Buildings and improvements, Total costs	60,508
Total	67,041
Accumulated depreciation and amortization	(9,703)
Date of acquisition or construction	2010
365 Main Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	365 Main Street
Metropolitan Area	San Francisco
Land, Initial costs	22,854
Buildings and improvements, Initial costs	158,709
Costs capitalized subsequent to acquisition, Improvements	20,297
Land, Total costs	22,854
Buildings and improvements, Total costs	179,006
Total	201,860
Accumulated depreciation and amortization	(17,533)
Date of acquisition or construction	2010
720 2nd Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	720 2nd Street
Metropolitan Area	San Francisco
Land, Initial costs	3,884
Buildings and improvements, Initial costs	116,861
Costs capitalized subsequent to acquisition, Improvements	6,806
Land, Total costs	3,884
Buildings and improvements, Total costs	123,667
Total	127,551
Accumulated depreciation and amortization	(11,825)
Date of acquisition or construction	2010
2260 East El Segundo [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2260 East El Segundo
Metropolitan Area	Los Angeles
Land, Initial costs	11,053
Buildings and improvements, Initial costs	51,397
Costs capitalized subsequent to acquisition, Improvements	11,479
Land, Total costs	11,053
Buildings and improvements, Total costs	62,876
Total	73,929
Accumulated depreciation and amortization	(6,733)
Date of acquisition or construction	2010
2121 South Price Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2121 South Price Road
Metropolitan Area	Phoenix
Land, Initial costs	7,335
Buildings and improvements, Initial costs	238,452
Costs capitalized subsequent to acquisition, Improvements	176,792
Land, Total costs	7,335
Buildings and improvements, Total costs	415,244
Total	422,579
Accumulated depreciation and amortization	(28,972)
Date of acquisition or construction	2010
4030 Lafayette [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4030 La Fayette
Metropolitan Area	N. Virginia
Land, Initial costs	2,492
Buildings and improvements, Initial costs	16,912
Costs capitalized subsequent to acquisition, Improvements	2,920
Land, Total costs	2,492
Buildings and improvements, Total costs	19,832
Total	22,324
Accumulated depreciation and amortization	(2,116)
Date of acquisition or construction	2010
4040 Lafayette [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4040 La Fayette
Metropolitan Area	N. Virginia
Land, Initial costs	1,246
Buildings and improvements, Initial costs	4,267
Costs capitalized subsequent to acquisition, Improvements	702
Land, Total costs	1,246
Buildings and improvements, Total costs	4,969
Total	6,215
Accumulated depreciation and amortization	(427)
Date of acquisition or construction	2010
4050 Lafayette [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4050 La Fayette
Metropolitan Area	N. Virginia
Land, Initial costs	1,246
Buildings and improvements, Initial costs	4,371
Costs capitalized subsequent to acquisition, Improvements	34,258
Land, Total costs	1,246
Buildings and improvements, Total costs	38,629
Total	39,875
Accumulated depreciation and amortization	(7,097)
Date of acquisition or construction	2010
800 Central Expressway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	800 Central Expressway
Metropolitan Area	Silicon Valley
Land, Initial costs	8,976
Buildings and improvements, Initial costs	18,155
Costs capitalized subsequent to acquisition, Improvements	94,689
Land, Total costs	8,976
Buildings and improvements, Total costs	112,844
Total	121,820
Accumulated depreciation and amortization	(400)
Date of acquisition or construction	2010
29 A International Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	29A International Business Park
Metropolitan Area	Singapore
Buildings and improvements, Initial costs	137,545
Costs capitalized subsequent to acquisition, Improvements	127,920
Buildings and improvements, Total costs	265,465
Total	265,465
Accumulated depreciation and amortization	(23,873)
Date of acquisition or construction	2010
Loudoun Parkway North [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Loudoun Parkway North
Metropolitan Area	N. Virginia
Land, Initial costs	17,300
Costs capitalized subsequent to acquisition, Improvements	157,218
Land, Total costs	17,300
Buildings and improvements, Total costs	157,218
Total	174,518
Accumulated depreciation and amortization	(3,976)
Date of acquisition or construction	2011
1-23 Templar Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1-23 Templar Road
Metropolitan Area	Sydney
Land, Initial costs	11,173
Costs capitalized subsequent to acquisition, Improvements	47,365
Land, Total costs	9,760
Buildings and improvements, Total costs	48,778
Total	58,538
Accumulated depreciation and amortization	(1,832)
Date of acquisition or construction	2011
Fountain Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Fountain Court
Metropolitan Area	London
Land, Initial costs	7,544
Buildings and improvements, Initial costs	12,506
Costs capitalized subsequent to acquisition, Improvements	69,991
Land, Total costs	8,037
Buildings and improvements, Total costs	82,004
Total	90,041
Accumulated depreciation and amortization	(1,807)
Date of acquisition or construction	2011
98 Radnor Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	98 Radnor Drive
Metropolitan Area	Melbourne
Land, Initial costs	4,467
Costs capitalized subsequent to acquisition, Improvements	95,607
Land, Total costs	3,902
Buildings and improvements, Total costs	96,172
Total	100,074
Accumulated depreciation and amortization	(3,106)
Date of acquisition or construction	2011
Cabot Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cabot Street
Metropolitan Area	Boston
Land, Initial costs	2,386
Costs capitalized subsequent to acquisition, Improvements	57,977
Land, Total costs	2,427
Buildings and improvements, Total costs	57,936
Total	60,363
Accumulated depreciation and amortization	(479)
Date of acquisition or construction	2011
3825 NW Aloclek Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3825 NW Aloclek Place
Metropolitan Area	Portland
Land, Initial costs	1,689
Costs capitalized subsequent to acquisition, Improvements	56,365
Land, Total costs	1,689
Buildings and improvements, Total costs	56,365
Total	58,054
Accumulated depreciation and amortization	(4,110)
Date of acquisition or construction	2011
11085 Sun Center Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11085 Sun Center Drive
Metropolitan Area	Sacramento
Land, Initial costs	2,490
Buildings and improvements, Initial costs	21,509
Land, Total costs	2,490
Buildings and improvements, Total costs	21,509
Total	23,999
Accumulated depreciation and amortization	(1,394)
Date of acquisition or construction	2011
Profile Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Profile Park
Metropolitan Area	Dublin
Land, Initial costs	6,288
Costs capitalized subsequent to acquisition, Improvements	12,924
Land, Total costs	6,700
Buildings and improvements, Total costs	12,512
Total	19,212
Date of acquisition or construction	2011
1506 Moran Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1506 Moran Road
Metropolitan Area	N. Virginia
Land, Initial costs	1,527
Costs capitalized subsequent to acquisition, Improvements	17,001
Land, Total costs	1,115
Buildings and improvements, Total costs	17,413
Total	18,528
Accumulated depreciation and amortization	(447)
Date of acquisition or construction	2011
760 Doug Davis Drive [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	760 Doug Davis Drive
Metropolitan Area	Atlanta
Land, Initial costs	4,837
Buildings and improvements, Initial costs	53,551
Costs capitalized subsequent to acquisition, Improvements	1,647
Land, Total costs	4,837
Buildings and improvements, Total costs	55,198
Total	60,035
Accumulated depreciation and amortization	(3,629)
Date of acquisition or construction	2011
360 Spear Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	360 Spear Street
Metropolitan Area	San Francisco
Land, Initial costs	19,828
Buildings and improvements, Initial costs	56,733
Costs capitalized subsequent to acquisition, Improvements	(1,282)
Land, Total costs	19,828
Buildings and improvements, Total costs	55,451
Total	75,279
Accumulated depreciation and amortization	(4,206)
Date of acquisition or construction	2011
2501 S. State Hwy 121 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2501 S. State Hwy 121
Metropolitan Area	Dallas
Land, Initial costs	23,137
Buildings and improvements, Initial costs	93,943
Costs capitalized subsequent to acquisition, Improvements	13,234
Land, Total costs	23,137
Buildings and improvements, Total costs	107,177
Total	130,314
Accumulated depreciation and amortization	(8,275)
Date of acquisition or construction	2012
9333, 9355, 9377 Grand Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	9333, 9355, 9377 Grand Avenue
Metropolitan Area	Chicago
Land, Initial costs	5,686
Buildings and improvements, Initial costs	14,515
Costs capitalized subsequent to acquisition, Improvements	136,741
Land, Total costs	5,686
Buildings and improvements, Total costs	151,256
Total	156,942
Accumulated depreciation and amortization	(2,829)
Date of acquisition or construction	2012
8025 North Interstate 35 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8025 North Interstate 35
Metropolitan Area	Austin
Encumbrances	6,426
Land, Initial costs	2,920
Buildings and improvements, Initial costs	8,512
Costs capitalized subsequent to acquisition, Improvements	157
Land, Total costs	2,920
Buildings and improvements, Total costs	8,669
Total	11,589
Accumulated depreciation and amortization	(524)
Date of acquisition or construction	2012
Unamortized net premium	112
850 E. Collins [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	850 E. Collins
Metropolitan Area	Dallas
Land, Initial costs	1,614
Costs capitalized subsequent to acquisition, Improvements	56,095
Land, Total costs	1,614
Buildings and improvements, Total costs	56,095
Total	57,709
Accumulated depreciation and amortization	(617)
Date of acquisition or construction	2012
950 E. Collins [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	950 E. Collins
Metropolitan Area	Dallas
Land, Initial costs	1,546
Costs capitalized subsequent to acquisition, Improvements	36,092
Land, Total costs	1,546
Buildings and improvements, Total costs	36,092
Total	37,638
Date of acquisition or construction	2012
400 S. Akard Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	400 S. Akard
Metropolitan Area	Dallas
Land, Initial costs	10,075
Buildings and improvements, Initial costs	62,730
Costs capitalized subsequent to acquisition, Improvements	200
Land, Total costs	10,075
Buildings and improvements, Total costs	62,930
Total	73,005
Accumulated depreciation and amortization	(2,552)
Date of acquisition or construction	2012
410 Commerce Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	410 Commerce Boulevard
Metropolitan Area	NY Metro
Costs capitalized subsequent to acquisition, Improvements	28,944
Buildings and improvements, Total costs	28,944
Total	28,944
Accumulated depreciation and amortization	(895)
Date of acquisition or construction	2012
Unit B Prologis Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit B Prologis Park
Metropolitan Area	London
Land, Initial costs	1,683
Buildings and improvements, Initial costs	104,728
Costs capitalized subsequent to acquisition, Improvements	3,999
Land, Total costs	1,743
Buildings and improvements, Total costs	108,667
Total	110,410
Accumulated depreciation and amortization	(4,754)
Date of acquisition or construction	2012
The Chess Building [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	The Chess Building
Metropolitan Area	London
Acquired ground lease, Initial costs	7,355
Buildings and improvements, Initial costs	219,273
Costs capitalized subsequent to acquisition, Improvements	24,781
Acquired ground lease, Total costs	8,108
Buildings and improvements, Total costs	243,301
Total	251,409
Accumulated depreciation and amortization	(9,895)
Date of acquisition or construction	2012
Unit 21 Goldsworth Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit 21 Goldsworth Park
Metropolitan Area	London
Land, Initial costs	17,334
Buildings and improvements, Initial costs	928,129
Costs capitalized subsequent to acquisition, Improvements	62,826
Land, Total costs	17,747
Buildings and improvements, Total costs	990,542
Total	1,008,289
Accumulated depreciation and amortization	(39,399)
Date of acquisition or construction	2012
11900 East Cornell Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11900 East Cornell
Metropolitan Area	Denver
Land, Initial costs	3,352
Buildings and improvements, Initial costs	80,640
Costs capitalized subsequent to acquisition, Improvements	100
Land, Total costs	3,352
Buildings and improvements, Total costs	80,740
Total	84,092
Accumulated depreciation and amortization	(3,384)
Date of acquisition or construction	2012
701 Union Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	701 Union Boulevard
Metropolitan Area	NY Metro
Land, Initial costs	10,045
Buildings and improvements, Initial costs	6,755
Costs capitalized subsequent to acquisition, Improvements	19,309
Land, Total costs	10,045
Buildings and improvements, Total costs	26,064
Total	36,109
Date of acquisition or construction	2012
23 Waterloo Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	23 Waterloo Road
Metropolitan Area	Sydney
Land, Initial costs	7,112
Buildings and improvements, Initial costs	3,868
Costs capitalized subsequent to acquisition, Improvements	(1,561)
Land, Total costs	6,101
Buildings and improvements, Total costs	3,318
Total	9,419
Accumulated depreciation and amortization	(100)
Date of acquisition or construction	2012
1 Rue Jean-Pierre [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 Rue Jean-Pierre
Metropolitan Area	Paris
Land, Initial costs	9,621
Buildings and improvements, Initial costs	35,825
Costs capitalized subsequent to acquisition, Improvements	1,895
Land, Total costs	10,022
Buildings and improvements, Total costs	37,319
Total	47,341
Accumulated depreciation and amortization	(1,353)
Date of acquisition or construction	2012
Liet-dit ie Christ de Saclay [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Liet-dit le Christ de Saclay
Metropolitan Area	Paris
Land, Initial costs	3,402
Buildings and improvements, Initial costs	3,090
Costs capitalized subsequent to acquisition, Improvements	271
Land, Total costs	3,544
Buildings and improvements, Total costs	3,219
Total	6,763
Accumulated depreciation and amortization	(151)
Date of acquisition or construction	2012
127 Rue de Paris [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	127 Rue de Paris
Metropolitan Area	Paris
Land, Initial costs	8,637
Buildings and improvements, Initial costs	10,838
Costs capitalized subsequent to acquisition, Improvements	812
Land, Total costs	8,997
Buildings and improvements, Total costs	11,290
Total	20,287
Accumulated depreciation and amortization	(509)
Date of acquisition or construction	2012
17201 Waterview Parkway [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	17201 Waterview Parkway
Metropolitan Area	Dallas
Land, Initial costs	2,070
Buildings and improvements, Initial costs	6,409
Land, Total costs	2,070
Buildings and improvements, Total costs	6,409
Total	8,479
Accumulated depreciation and amortization	(193)
Date of acquisition or construction	2013
1900 S. Price Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1900 S. Price Road
Metropolitan Area	Phoenix
Land, Initial costs	5,380
Buildings and improvements, Initial costs	16,975
Costs capitalized subsequent to acquisition, Improvements	191
Land, Total costs	5,380
Buildings and improvements, Total costs	17,166
Total	22,546
Accumulated depreciation and amortization	(654)
Date of acquisition or construction	2013
371 Gough Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	371 Gough Road
Metropolitan Area	Toronto
Land, Initial costs	7,394
Buildings and improvements, Initial costs	677
Costs capitalized subsequent to acquisition, Improvements	12,006
Land, Total costs	7,139
Buildings and improvements, Total costs	12,938
Total	20,077
Accumulated depreciation and amortization	(14)
Date of acquisition or construction	2013
1500 Towerview Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1500 Towerview Road
Metropolitan Area	Minneapolis
Land, Initial costs	10,190
Buildings and improvements, Initial costs	20,054
Costs capitalized subsequent to acquisition, Improvements	(50)
Land, Total costs	10,190
Buildings and improvements, Total costs	20,004
Total	30,194
Accumulated depreciation and amortization	(560)
Date of acquisition or construction	2013
Principal Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Principal Park
Metropolitan Area	London
Land, Initial costs	11,837
Costs capitalized subsequent to acquisition, Improvements	13,753
Land, Total costs	14,695
Buildings and improvements, Total costs	10,895
Total	25,590
Date of acquisition or construction	2013
MetCenter Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	MetCenter Business Park
Metropolitan Area	Austin
Land, Initial costs	8,604
Buildings and improvements, Initial costs	20,314
Costs capitalized subsequent to acquisition, Improvements	6
Land, Total costs	8,604
Buildings and improvements, Total costs	20,320
Total	28,924
Accumulated depreciation and amortization	(486)
Date of acquisition or construction	2013
Liverpoolweg 10 [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Liverpoolweg 10
Metropolitan Area	Amsterdam
Land, Initial costs	733
Buildings and improvements, Initial costs	3,122
Costs capitalized subsequent to acquisition, Improvements	4,391
Land, Total costs	772
Buildings and improvements, Total costs	7,474
Total	8,246
Accumulated depreciation and amortization	(69)
Date of acquisition or construction	2013
DePresident [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	DePresident
Metropolitan Area	Amsterdam
Land, Initial costs	6,737
Costs capitalized subsequent to acquisition, Improvements	7,435
Land, Total costs	8,545
Buildings and improvements, Total costs	5,627
Total	14,172
Date of acquisition or construction	2013
Saito Industrial Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Saito Industrial Park
Metropolitan Area	Osaka
Land, Initial costs	9,649
Costs capitalized subsequent to acquisition, Improvements	2,284
Land, Total costs	9,325
Buildings and improvements, Total costs	2,608
Total	11,933
Date of acquisition or construction	2013
636 Pierce Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	636 Pierce Street
Metropolitan Area	New York Metro
Encumbrances	27,962
Land, Initial costs	5,501
Buildings and improvements, Initial costs	27,924
Land, Total costs	5,501
Buildings and improvements, Total costs	27,924
Total	33,425
Accumulated depreciation and amortization	(29)
Date of acquisition or construction	2013
Unamortized net premium	1,634
Other [Member]
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Other
Buildings and improvements, Initial costs	8,298
Costs capitalized subsequent to acquisition, Improvements	36,207
Buildings and improvements, Total costs	44,505
Total	44,505
Accumulated depreciation and amortization	$ (3,792)