Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 72,511	$ 40,934	$ 200,822	$ 58,149
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax of $6 and $(6) for the three months ended September 30, 2021 and 2020, respectively, and $4 and $3 for the nine months ended September 30, 2021 and 2020, respectively	(17)	17	(11)	(9)
Other comprehensive income (loss)	(17)	17	(11)	(9)
Comprehensive income (loss)	72,494	40,951	200,811	58,140
Comprehensive (income) loss attributable to noncontrolling interests	(13,775)	(11,286)	(42,531)	(21,507)
Comprehensive Income (Loss) Attributable to Virtus Investment Partners, Inc.	$ 58,719	$ 29,665	$ 158,280	$ 36,633