CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 25,905	$ 28,566
Other comprehensive income (loss):
Unrealized gain (loss) on derivative contracts	(4,466)	609
Reclassification of other comprehensive income (loss) to interest expense	(198)	(32)
Comprehensive income	21,241	29,143
Comprehensive income attributable to noncontrolling interests	5,120	8,431
Comprehensive income attributable to CoreSite Realty Corporation	$ 16,121	$ 20,712