CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income (loss)	$ 31,665	$ (7,175)	$ 1,457
Other comprehensive income (loss):
Foreign currency translation adjustment gain	34
Increase (decrease) in fair value of derivative contracts	(29,843)	895	1,449
Reclassification of other comprehensive income to utilities expense	749	0	0
Reclassification of other comprehensive income to interest expense	(1,031)	110
Comprehensive income (loss)	1,574	(6,170)	2,906
Comprehensive (income) loss attributable to noncontrolling interests	(169)	711	(349)
Comprehensive income (loss) attributable to QTS Realty Trust, Inc.	1,405	(5,459)	2,557
Qualitytech, LP
Net income (loss)	31,665	(7,175)	1,457
Other comprehensive income (loss):
Foreign currency translation adjustment gain	34
Increase (decrease) in fair value of derivative contracts	(29,843)	895	1,449
Reclassification of other comprehensive income to utilities expense	749
Reclassification of other comprehensive income to interest expense	(1,031)	110
Comprehensive income (loss)	$ 1,574	$ (6,170)	$ 2,906