INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 7,918	$ 8,120
Other comprehensive income (loss):
Foreign currency translation adjustment loss	(158)	(223)
Increase (decrease) in fair value of derivative contracts	17,253	(36,715)
Reclassification of other comprehensive income to utilities expense	(66)	354
Reclassification of other comprehensive income to interest expense	3,375	758
Comprehensive income (loss)	28,322	(27,706)
Comprehensive (income) loss attributable to noncontrolling interests	(2,558)	2,831
Comprehensive income (loss) attributable to QTS Realty Trust, Inc.	$ 25,764	$ (24,875)