INTERIM CONSOLIDATED FINANCIAL STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 4,608	$ 5,807	$ 10,176	$ 12,666
Other comprehensive loss:
Decrease in fair value of interest rate swaps	(1,499)		(1,499)
Comprehensive income	3,109	5,807	8,677	12,666
Comprehensive income attributable to noncontrolling interests	(385)		(1,076)
Comprehensive income attributable to QTS Realty Trust, Inc.	2,724	5,807	7,601	12,666
Qualitytech, LP [Member]
Net income	4,608	5,807	10,176	12,666
Other comprehensive loss:
Decrease in fair value of interest rate swaps	(1,499)		(1,499)
Comprehensive income	$ 3,109	$ 5,807	$ 8,677	$ 12,666