INTERIM CONSOLIDATED FINANCIAL STATEMENTS CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Preferred Units Qualitytech, LP Limited Partner	7.125% Series A cumulative redeemable perpetual preferred stock: $0.01 par value (liquidation preference $25.00 per share), 4,600,000 shares authorized, 4,280,000 shares issued and outstanding as of June 30, 2018; zero shares authorized, issued and outstanding as of December 31, 2017 Qualitytech, LP Limited Partner	7.125% Series A cumulative redeemable perpetual preferred stock: $0.01 par value (liquidation preference $25.00 per share), 4,600,000 shares authorized, 4,280,000 shares issued and outstanding as of June 30, 2018; zero shares authorized, issued and outstanding as of December 31, 2017 Qualitytech, LP	6.50% Series B cumulative convertible perpetual preferred units: $0.01 par value (liquidation preference $100.00 per share), 3,162,500 units authorized, 3,162,500 units issued and outstanding as of June 30, 2018; zero units authorized, issued and outstanding as of December 31, 2017 Qualitytech, LP Limited Partner	6.50% Series B cumulative convertible perpetual preferred units: $0.01 par value (liquidation preference $100.00 per share), 3,162,500 units authorized, 3,162,500 units issued and outstanding as of June 30, 2018; zero units authorized, issued and outstanding as of December 31, 2017 Qualitytech, LP	Common units: $0.01 par value, 450,133,000 units authorized, 51,135,691 and 57,245,524 units issued and outstanding as of June 30, 2018 and December 31, 2017, respectively Qualitytech, LP General Partner	Common units: $0.01 par value, 450,133,000 units authorized, 51,135,691 and 57,245,524 units issued and outstanding as of June 30, 2018 and December 31, 2017, respectively Qualitytech, LP Limited Partner	Series A Preferred Stock Preferred stock	Series A Preferred Stock Accumulated dividends in excess of earnings	Series A Preferred Stock Total stockholders' Equity	Series A Preferred Stock	Series B Preferred Stock Preferred stock	Series B Preferred Stock Accumulated dividends in excess of earnings	Series B Preferred Stock Total stockholders' Equity	Series B Preferred Stock	Qualitytech, LP Accumulated other comprehensive income	Qualitytech, LP	Preferred stock	Common stock	Additional paid-in capital	Accumulated other comprehensive income	Accumulated dividends in excess of earnings	Total stockholders' Equity	Noncontrolling interests	Total
Preferred Stock, Shares Issued			0		0						0				0
Beginning balance at Dec. 31, 2017																$ 1,449			$ 507	$ 1,049,176	$ 1,283	$ (173,552)	$ 877,414	$ 113,242	$ 990,656
Beginning balance at Dec. 31, 2017							$ 989,207
Partners' Capital, Beginning Balance at Dec. 31, 2017																	$ 990,656
Beginning balance, shares at Dec. 31, 2017																			50,702,000
Beginning balance, shares at Dec. 31, 2017							57,246,000
Beginning balance, shares at Dec. 31, 2017						1,000
Net share activity through equity award plan							$ (862)										(862)		$ 4	(1,897)			(1,893)	1,031	(862)
Net share activity through equity award plan, shares							572,000												439,000
Increase (decrease) in fair value of interest rate swaps																8,545	8,545				7,557		7,557	988	8,545
Equity-based compensation expense							$ 10,608										10,608			9,388			9,388	1,220	10,608
Net proceeds from Series Preferred Stock offering		$ 103,212	$ 103,212	$ 304,426	$ 304,426			$ 103,212		$ 103,212	$ 103,212	$ 304,426		$ 304,426	$ 304,426
Net proceeds from Series Preferred Stock offering (in shares)		4,280,000		3,163,000				4,280,000				3,163,000
Dividends declared on Preferred Stock									$ (2,233)	$ (2,233)	(2,233)		$ (343)	$ (343)	(343)										(2,576)
Dividends declared on Preferred Units		$ (2,233)	(2,233)	$ (343)	(343)												(2,576)
Dividends to stockholders							(41,942)										(41,942)					(41,942)	(41,942)		(41,942)
Distributions to noncontrolling interests																								(5,472)	(5,472)
Partnership distributions							(5,472)										(5,472)
Net loss							(6,685)										(6,685)					(5,654)	(5,654)	(1,031)	(6,685)
Ending balance at Jun. 30, 2018																$ 9,994		$ 407,638	$ 511	$ 1,056,667	$ 8,840	$ (223,724)	$ 1,249,932	$ 109,978	$ 1,359,910
Ending balance at Jun. 30, 2018	$ 407,638						$ 942,278
Partners' Capital, Ending Balance at Jun. 30, 2018																	$ 1,359,910
Ending balance, shares at Jun. 30, 2018																		7,443,000	51,141,000
Ending balance, shares at Jun. 30, 2018	7,443,000						57,818,000
Ending balance, shares at Jun. 30, 2018						1,000
Preferred Stock, Value, Issued			$ 103,212		$ 304,426						$ 103,212				$ 304,426
Preferred Stock, Shares Issued			4,280,000		3,162,500						4,280,000				3,162,500