CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Qualitytech, LP [Member] Partnership Units [Member] General Partner [Member]	Qualitytech, LP [Member] Partnership Units [Member] Limited Partner [Member]	Qualitytech, LP [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Dividends in Excess of Earnings [Member]	Total stockholders' Equity [Member]	Noncontrolling Interest [Member]	Total
Beginning balance at Dec. 31, 2014				$ 294	$ 324,917	$ (22,503)	$ 302,708	$ 77,477	$ 380,185
Beginning balance at Dec. 31, 2014		$ 380,185	$ 380,185
Beginning balance, shares at Dec. 31, 2014				29,408
Beginning balance, shares at Dec. 31, 2014	1	36,935
Issuance of shares through equity award plan				$ 2	(2)
Issuance of shares through equity award plan, shares		193		193
Net proceeds from equity offering		$ 369,309	$ 369,309	$ 108	331,050		331,158	38,151	369,309
Net proceeds from equity offering, shares		10,750		10,750
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock				$ 5	6,196		6,201	(6,201)
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock, shares				530
Equity-based compensation expense		$ 3,138	3,138		2,590		2,590	548	3,138
Dividend to shareholders		(24,225)	(24,225)			(24,225)	(24,225)		(24,225)
Distribution to noncontrolling interests								(4,479)	(4,479)
Partnership distribution		(4,479)	(4,479)
Net income		10,557	10,557			8,714	8,714	1,843	10,557
Ending balance at Jun. 30, 2015				$ 409	$ 664,751	$ (38,014)	$ 627,146	$ 107,339	$ 734,485
Ending balance at Jun. 30, 2015		$ 734,485	$ 734,485
Ending balance, shares at Jun. 30, 2015				40,881
Ending balance, shares at Jun. 30, 2015	1	47,878