INTERIM CONSOLIDATED FINANCIAL STATEMENTS CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 30, 2017 - USD ($) shares in Thousands, $ in Thousands	Qualitytech, LP [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Qualitytech, LP [Member] General Partner [Member]	Qualitytech, LP [Member] Limited Partner [Member]	Qualitytech, LP [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, 2016					$ 478	$ 931,783		$ (97,793)	$ 834,468	$ 118,342	$ 952,810
Beginning balance at Dec. 31, 2016			$ 952,810
Partners' Capital, Beginning Balance at Dec. 31, 2016			$ 952,810	$ 952,810
Beginning balance, shares at Dec. 31, 2016					47,831
Beginning balance, shares at Dec. 31, 2016			54,628
Beginning balance, shares at Dec. 31, 2016		1
Net share activity through equity award plan			$ (1,968)	(1,968)	$ 2	(1,727)			(1,725)	(243)	(1,968)
Issuance of shares through equity award plan, shares			235		235
Other comprehensive loss	$ (1,499)			(1,499)			$ (1,316)		(1,316)	(183)	(1,499)
Net proceeds from equity offering			$ 39,011	39,011	$ 8	36,343			36,351	2,660	39,011
Net proceeds from equity offering, shares			746		746
Equity-based compensation expense			$ 6,814	6,814		5,971			5,971	843	6,814
Dividend to shareholder			(37,698)	(37,698)				(37,698)	(37,698)		(37,698)
Distributions to noncontrolling interests										(5,290)	(5,290)
Partnership distributions			(5,290)	(5,290)
Net income			10,176	10,176				8,917	8,917	1,259	10,176
Ending balance at Jun. 30, 2017					$ 488	$ 972,370	$ (1,316)	$ (126,574)	$ 844,968	$ 117,388	$ 962,356
Ending balance at Jun. 30, 2017	$ (1,499)		963,855
Partners' Capital, Ending Balance at Jun. 30, 2017			$ 963,855	$ 962,356
Ending balance, shares at Jun. 30, 2017					48,812
Ending balance, shares at Jun. 30, 2017			55,609
Ending balance, shares at Jun. 30, 2017		1