CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	Qualitytech, LP [Member] General Partner [Member]	Qualitytech, LP [Member] Limited Partner [Member]	Qualitytech, LP [Member]	Partnership Units [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, 2012		$ 121,679	$ 121,679	$ 121,679							$ 121,679
Beginning balance, shares at Dec. 31, 2012	1	22,173		22,174
Equity-based compensation expense, net of equity awards repurchased				$ 1,369							1,369
Member advances exchanged for LP units				$ 10,000							10,000
Member advances exchanged for LP units, shares				400
Partnership distributions				$ (7,633)							(7,633)
Other comprehensive gain (loss)				220							220
Net income				(152)							(152)
Ending balance at Oct. 14, 2013				$ 125,483					$ 125,483		125,483
Ending balance, shares at Oct. 14, 2013				22,574
Beginning balance at Dec. 31, 2012		$ 121,679	121,679	$ 121,679							121,679
Beginning balance, shares at Dec. 31, 2012	1	22,173		22,174
Net proceeds from IPO		$ 279,059	279,059
Net proceeds from IPO, shares		14,197
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		3,850	3,850
Ending balance at Dec. 31, 2013					$ 289	$ 318,834	$ (357)	$ (3,799)	314,967	$ 84,737	399,704
Ending balance at Dec. 31, 2013		$ 399,704	399,704
Ending balance, shares at Dec. 31, 2013					28,973
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								3,154	3,154	848	4,002
Ending balance at Dec. 31, 2013					$ 289	318,834	(357)	(3,799)	314,967	84,737	399,704
Ending balance at Dec. 31, 2013		$ 399,704	399,704
Ending balance, shares at Dec. 31, 2013					28,973
Ending balance, shares at Dec. 31, 2013	1	36,770
Issuance of shares through equity award plan					$ 5	(5)
Issuance of shares through equity award plan, shares		165			165
Reclassification of noncontrolling interest upon conversion of partnership units to common stock						2,811			2,811	(2,811)
Reclassification of noncontrolling interest 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		19,103	19,103					15,072	15,072	4,031	19,103
Ending balance at Dec. 31, 2014					$ 294	324,917		(22,503)	302,708	77,477	380,185
Ending balance at Dec. 31, 2014		$ 380,185	380,185
Ending balance, shares at Dec. 31, 2014					29,408
Ending balance, shares at Dec. 31, 2014	1	36,935
Issuance of shares through equity award plan		$ (644)	(644)		$ 3	(3)				(644)	(644)
Issuance of shares through equity award plan, shares		338			338
Net proceeds from equity offering		$ 368,664	368,664		$ 108	330,256			330,364	38,300	368,664
Net proceeds from equity offering, shares		10,750			10,750
Reclassification of noncontrolling interest upon conversion of partnership units to common stock					$ 7	9,239			9,246	(9,246)
Reclassification of noncontrolling interest upon conversion of partnership units to common stock, shares					730
Equity-based compensation expense		$ 6,964	6,964			5,866			5,866	1,098	6,964
Dividend to shareholders		(50,555)	(50,555)					(50,555)	(50,555)		(50,555)
Distribution to noncontrolling interests										(8,877)	(8,877)
Partnership distribution		(8,877)	(8,877)
Net income		24,129	24,129					20,326	20,326	3,803	24,129
Ending balance at Dec. 31, 2015					$ 412	$ 670,275		$ (52,732)	$ 617,955	$ 101,911	$ 719,866
Ending balance at Dec. 31, 2015		$ 719,866	$ 719,866
Ending balance, shares at Dec. 31, 2015					41,226
Ending balance, shares at Dec. 31, 2015	1	48,023