INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income (loss)	$ 6,588	$ (6,892)	$ 35,271	$ (13,577)
Other comprehensive income (loss):
Foreign currency translation adjustment gain	(426)		(360)
Increase (decrease) in fair value of derivative contracts	(5,733)	1,429	(34,192)	9,974
Reclassification of other comprehensive income to interest expense	(235)	(83)	(1,200)	410
Comprehensive income (loss)	194	(5,546)	(481)	(3,193)
Comprehensive (income) loss attributable to noncontrolling interests	(22)	639	52	368
Comprehensive income (loss) attributable to QTS Realty Trust, Inc.	172	(4,907)	(429)	(2,825)
Qualitytech, LP
Net income (loss)	6,588	(6,892)	35,271	(13,577)
Other comprehensive income (loss):
Foreign currency translation adjustment gain	(426)		(360)
Increase (decrease) in fair value of derivative contracts	(5,733)	1,429	(34,192)	9,974
Reclassification of other comprehensive income to interest expense	(235)	(83)	(1,200)	410
Comprehensive income (loss)	$ 194	$ (5,546)	$ (481)	$ (3,193)