Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Real Estate Assets
Land	$ 52,430	$ 48,577
Buildings and improvements	1,073,120	914,286
Less: Accumulated depreciation	(205,284)	(180,167)
Total real estate assets	920,266	782,696
Construction in progress	320,885	214,719
Real Estate Assets, net	1,241,151	997,415
Cash and cash equivalents	10,744	10,788	$ 7,489	$ 5,210
Rents and other receivables, net	30,548	15,579
Acquired intangibles, net	122,005	18,000
Deferred costs, net	38,013	37,058
Prepaid expenses	7,132	3,079
Goodwill	173,237
Other assets, net	29,198	24,640
TOTAL ASSETS	1,652,028	1,106,559
LIABILITIES
Mortgage notes payable	70,000	86,600
Unsecured credit facility	330,000	239,838
Senior notes, net of discount	297,852	297,729
Capital lease and lease financing obligations	56,211	13,062
Accounts payable and accrued liabilities	92,708	64,607
Dividends and distributions payable	15,322	10,705
Advance rents, security deposits and other liabilities	19,444	3,302
Deferred income taxes	16,449
Deferred income	19,557	10,531
TOTAL LIABILITIES	917,543	726,374
EQUITY
TOTAL LIABILITIES AND EQUITY	1,652,028	1,106,559
Eliminations [Member]
Real Estate Assets
Investment in subsidiaries	(294,858)
TOTAL ASSETS	(294,858)
EQUITY
Partners' capital	(294,858)
TOTAL LIABILITIES AND EQUITY	(294,858)
Qualitytech, LP [Member]
Real Estate Assets
Land	52,430	48,577
Buildings and improvements	1,073,120	914,286
Less: Accumulated depreciation	(205,284)	(180,167)
Total real estate assets	920,266	782,696
Construction in progress	320,885	214,719
Real Estate Assets, net	1,241,151	997,415
Cash and cash equivalents	10,744	10,788	$ 7,489	$ 5,210
Rents and other receivables, net	30,548	15,579
Acquired intangibles, net	122,005	18,000
Deferred costs, net	38,013	37,058
Prepaid expenses	7,132	3,079
Goodwill	173,237
Other assets, net	29,198	24,640
TOTAL ASSETS	1,652,028	1,106,559
LIABILITIES
Mortgage notes payable	70,000	86,600
Unsecured credit facility	330,000	239,838
Senior notes, net of discount	297,852	297,729
Capital lease and lease financing obligations	56,211	13,062
Accounts payable and accrued liabilities	92,708	64,607
Dividends and distributions payable	15,322	10,705
Advance rents, security deposits and other liabilities	19,444	3,302
Deferred income taxes	16,449
Deferred income	19,557	10,531
TOTAL LIABILITIES	917,543	726,374
EQUITY
Partners' capital	734,485	380,185
TOTAL LIABILITIES AND EQUITY	1,652,028	1,106,559
Guarantor Subsidiaries [Member]
Real Estate Assets
Land	51,300
Buildings and improvements	993,748
Less: Accumulated depreciation	(204,606)
Total real estate assets	840,442
Construction in progress	308,758
Real Estate Assets, net	1,149,200
Cash and cash equivalents	6,117	$ 10,788
Rents and other receivables, net	18,294
Acquired intangibles, net	30,158
Deferred costs, net	38,013
Prepaid expenses	5,534
Investment in subsidiaries	294,858
Other assets, net	28,563
TOTAL ASSETS	1,570,737
LIABILITIES
Mortgage notes payable	70,000
Unsecured credit facility	330,000
Senior notes, net of discount	297,852
Capital lease and lease financing obligations	12,379
Accounts payable and accrued liabilities	84,816
Dividends and distributions payable	15,322
Advance rents, security deposits and other liabilities	16,600
Deferred income taxes	(3,135)
Deferred income	12,418
TOTAL LIABILITIES	836,252
EQUITY
Partners' capital	734,485
TOTAL LIABILITIES AND EQUITY	1,570,737
Non-Guarantor Subsidiaries [Member]
Real Estate Assets
Land	1,130
Buildings and improvements	79,372
Less: Accumulated depreciation	(678)
Total real estate assets	79,824
Construction in progress	12,127
Real Estate Assets, net	91,951
Cash and cash equivalents	4,627
Rents and other receivables, net	12,254
Acquired intangibles, net	91,847
Prepaid expenses	1,598
Goodwill	173,237
Other assets, net	635
TOTAL ASSETS	376,149
LIABILITIES
Capital lease and lease financing obligations	43,832
Accounts payable and accrued liabilities	7,892
Advance rents, security deposits and other liabilities	2,844
Deferred income taxes	19,584
Deferred income	7,139
TOTAL LIABILITIES	81,291
EQUITY
Partners' capital	294,858
TOTAL LIABILITIES AND EQUITY	$ 376,149