CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) (USD $) In Thousands	Qualitytech, LP [Member] Partnership Units [Member] General Partner [Member]	Qualitytech, LP [Member] Partnership Units [Member] Limited Partner [Member]	Qualitytech, LP [Member]	Partnership Units [Member]	Partners Capital [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated other Comprehensive Income (Loss) [Member]	Accumulated Dividends in Excess of Earnings [Member]	Total stockholders' Equity [Member]	Noncontrolling Interest [Member]	Total
Beginning balance at Dec. 31, 2011	$ 1	$ 39,864	$ 39,865		$ 39,865							$ 39,865
Beginning balance, shares at Dec. 31, 2011	1	16,049		16,050
Equity-based compensation expense		412	412		412							412
Issuance of RS LTIP Units		150		150
Equity investment in Class D units, net of costs		91,935	91,935		91,935							91,935
Equity investment in Class D units, net of costs, shares		3,680		3,680
PIK settlement		2,294		2,294
Other comprehensive gain (loss)		(766)	(766)		(766)							(766)
Net income (loss)			(9,767)		(9,767)							(9,767)
Net income (loss)	(1)	(9,766)	(9,767)
Ending balance at Dec. 31, 2012		121,679	121,679		121,679							121,679
Ending balance, shares at Dec. 31, 2012	1	22,173		22,174
Equity-based compensation expense					1,369							1,369
Member advances exchanged for LP units				400	10,000							10,000
Partnership distributions					(7,633)							(7,633)
Other comprehensive gain (loss)					220							220
Net income (loss)					(152)							(152)
Ending balance at Oct. 14, 2013					125,483							125,483
Ending balance, shares at Oct. 14, 2013				22,574
Beginning balance at Dec. 31, 2012		121,679	121,679
Beginning balance, shares at Dec. 31, 2012		22,173
Net proceeds from IPO		279,059	279,059
Net proceeds from IPO, shares		14,197
Equity-based compensation expense			1,960
Equity-based compensation expense, net of equity awards repurchased		1,947	1,947
Member advances exchanged for LP units		10,000	10,000
Member advances exchanged for LP units, shares		400
Partnership distributions		(9,645)	(9,645)
Other comprehensive gain (loss)		(233)	(233)
Dividend to shareholders		(6,953)	(6,953)
Net income (loss)			3,850
Net income (loss)		3,850	3,850
Ending balance at Dec. 31, 2013		399,704	399,704
Ending balance, shares at Dec. 31, 2013	1	36,770
Beginning balance at Oct. 14, 2013					125,483					125,483		125,483
Beginning balance, shares at Oct. 14, 2013				22,574
Reclassify partners capital					(125,483)	148	39,338			(85,997)	85,997
Reclassify partners capital, shares				(22,574)		14,776
Net proceeds from IPO						141	278,918			279,059		279,059
Net proceeds from IPO, shares						14,197
Equity-based compensation expense							578			578		578
Other comprehensive gain (loss)								(357)		(357)	(96)	(453)
Dividend to shareholders									(6,953)	(6,953)		(6,953)
Distribution to noncontrolling interests											(2,012)	(2,012)
Net income (loss)									3,154	3,154	848	4,002	[1]
Ending balance at Dec. 31, 2013		399,704	399,704			289	318,834	(357)	(3,799)	314,967	84,737	399,704
Ending balance at Dec. 31, 2013												399,704
Ending balance, shares at Dec. 31, 2013	1	36,770
Ending balance, shares at Dec. 31, 2013						28,973
Issuance of shares through equity award plan						5	(5)
Issuance of shares through equity award plan, shares						165
Issuance of shares through equity award plan, shares		165
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock							2,811			2,811	(2,811)
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock, shares						270
Equity-based compensation expense		4,153	4,153				3,277			3,277	876	4,153
Other comprehensive gain (loss)		453	453					357		357	96	453
Dividend to shareholders		(33,776)	(33,776)						(33,776)	(33,776)		(33,776)
Distribution to noncontrolling interests											(9,452)	(9,452)
Partnership distribution		(9,452)	(9,452)
Net income (loss)			19,103						15,072	15,072	4,031	19,103	[1]
Net income (loss)		19,103	19,103
Ending balance at Dec. 31, 2014		380,185	380,185
Ending balance at Dec. 31, 2014						$ 294	$ 324,917		$ (22,503)	$ 302,708	$ 77,477	$ 380,185
Ending balance, shares at Dec. 31, 2014	1	36,935
Ending balance, shares at Dec. 31, 2014						29,408

[1] (1) Includes 7,770 Class A and Class RS units, 195 “in the money” value of Class O units on an “as if” converted basis and 114 “in the money” value options to purchase shares of Class A common stock on an “as if” converted basis as of the year ended December 31, 2014. As of the year ended December 31, 2013, this amount includes 7,797 Class A and Class RS units and 24 “in the money” value of Class O units