Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Rental	$ 52,193	$ 41,966	$ 101,526	$ 82,545
Recoveries from customers	5,582	3,852	11,246	7,543
Cloud and managed services	8,220	4,970	14,015	9,201
Other	2,122	550	2,716	992
Total revenues	68,117	51,338	129,503	100,281
Operating Expenses:
Property operating costs	22,031	16,529	41,367	32,752
Real estate taxes and insurance	1,474	1,118	2,959	2,336
Depreciation and amortization	18,062	13,817	34,305	27,064
General and administrative	14,615	11,473	28,453	22,251
Restructuring		1,046		1,046
Transaction and integration costs	4,669	1,089	4,774	1,153
Total operating expenses	60,851	45,072	111,858	86,602
Operating income	7,266	6,266	17,645	13,679
Other income and expenses:
Interest income	1		1	8
Interest expense	(4,799)	(2,208)	(10,141)	(4,273)
Other (expense) income, net	(83)	(110)	(83)	(110)
Income before taxes	2,385	3,948	7,422	9,304
Tax benefit (expense) of taxable REIT subsidiaries	3,135	(27)	3,135	(55)
Net income	5,520	3,921	10,557	9,249
Qualitytech, LP [Member]
Revenues:
Rental	52,193	41,966	101,526	82,545
Recoveries from customers	5,582	3,852	11,246	7,543
Cloud and managed services	8,220	4,970	14,015	9,201
Other	2,122	550	2,716	992
Total revenues	68,117	51,338	129,503	100,281
Operating Expenses:
Property operating costs	22,031	16,529	41,367	32,752
Real estate taxes and insurance	1,474	1,118	2,959	2,336
Depreciation and amortization	18,062	13,817	34,305	27,064
General and administrative	14,615	11,473	$ 28,453	22,251
Restructuring		1,046		1,046
Transaction and integration costs	4,669	1,089	$ 4,774	1,153
Total operating expenses	60,851	45,072	111,858	86,602
Operating income	7,266	6,266	17,645	13,679
Other income and expenses:
Interest income	1		1	8
Interest expense	(4,799)	(2,208)	(10,141)	(4,273)
Other (expense) income, net	(83)	(110)	(83)	(110)
Income before taxes	2,385	3,948	7,422	9,304
Tax benefit (expense) of taxable REIT subsidiaries	3,135	(27)	3,135	(55)
Net income	5,520	$ 3,921	10,557	$ 9,249
Guarantor Subsidiaries [Member]
Revenues:
Rental	50,740		100,073
Recoveries from customers	5,582		11,246
Cloud and managed services	5,958		11,753
Other	2,120		2,714
Total revenues	64,400		125,786
Operating Expenses:
Property operating costs	20,564		39,900
Real estate taxes and insurance	1,474		2,959
Depreciation and amortization	16,876		33,119
General and administrative	13,781		$ 27,619
Restructuring
Transaction and integration costs	4,669		$ 4,774
Total operating expenses	57,364		108,371
Operating income	7,036		17,415
Other income and expenses:
Interest income	1		1
Interest expense	(4,743)		(10,085)
Other (expense) income, net	(83)		(83)
Equity in net income of subsidiaries	174		174
Income before taxes	2,385		7,422
Tax benefit (expense) of taxable REIT subsidiaries	3,135		3,135
Net income	5,520		10,557
Non-Guarantor Subsidiaries [Member]
Revenues:
Rental	1,453		1,453
Cloud and managed services	2,262		2,262
Other	2		2
Total revenues	3,717		3,717
Operating Expenses:
Property operating costs	1,467		1,467
Depreciation and amortization	1,186		1,186
General and administrative	834		$ 834
Restructuring
Total operating expenses	3,487		$ 3,487
Operating income	230		230
Other income and expenses:
Interest expense	(56)		(56)
Income before taxes	174		174
Net income	174		$ 174
Eliminations [Member]
Operating Expenses:
Restructuring
Other income and expenses:
Equity in net income of subsidiaries	(174)		$ (174)
Income before taxes	(174)		(174)
Net income	$ (174)		$ (174)