INTERIM CONSOLIDATED FINANCIAL STATEMENTS CONSOLIDATED STATEMENT OF EQUITY - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ 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 September 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 September 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, issued and outstanding as of September 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, issued and outstanding as of September 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, 57,800,709 and 57,245,524 units issued and outstanding as of September 30, 2018 and December 31, 2017, respectively Qualitytech, LP General Partner	Common units: $0.01 par value, 450,133,000 units authorized, 57,800,709 and 57,245,524 units issued and outstanding as of September 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
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
Beginning balance, shares at Dec. 31, 2017							57,246
Beginning balance, shares at Dec. 31, 2017						1
Net share activity through equity award plan							$ (1,134)										(1,134)		$ 4	(2,153)			(2,149)	1,015	(1,134)
Net share activity through equity award plan, shares							555												422
Increase (decrease) in fair value of interest rate swaps																9,974	9,974				8,820		8,820	1,154	9,974
Equity-based compensation expense							$ 14,569										14,569			12,891			12,891	1,678	14,569
Net proceeds from stock offering		$ 103,212	$ 103,212	$ 304,265	$ 304,265			$ 103,212		$ 103,212	$ 103,212	$ 304,265		$ 304,265	$ 304,265
Net proceeds from stock offering (in shares)		4,280		3,163				4,280				3,163
Dividends declared on Preferred Stock									$ (4,140)	$ (4,140)	$ (4,140)		$ (5,482)	$ (5,482)	$ (5,482)										(9,621)
Dividends declared on Preferred Units		$ (4,140)	$ (4,140)	$ (5,482)	$ (5,482)												(9,621)
Dividends to stockholders							(62,909)										(62,909)					(62,909)	(62,909)		(62,909)
Distributions to noncontrolling interests																								(8,207)	(8,207)
Partnership distributions							(8,207)										(8,207)
Net loss							(13,577)										(13,577)					(10,936)	(10,936)	(2,641)	(13,577)
Ending balance at Sep. 30, 2018																$ 11,423		$ 407,477	$ 511	$ 1,059,914	$ 10,103	$ (257,019)	$ 1,220,986	$ 106,241	$ 1,327,227
Ending balance at Sep. 30, 2018	$ 407,477						$ 908,327
Partners' Capital, Ending Balance at Sep. 30, 2018																	$ 1,327,227
Ending balance, shares at Sep. 30, 2018																		7,443	51,124
Ending balance, shares at Sep. 30, 2018	7,443						57,801
Ending balance, shares at Sep. 30, 2018						1