Earnings (Loss) Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net Income (Loss)	$ 106,628	$ 262,835	$ 119,963
Noncontrolling interests	10,913	(54,704)	(40,006)
Net Income (Loss) Attributable to Virtus Investment Partners, Inc.	$ 117,541	$ 208,131	$ 79,957
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic: Weighted-average number of shares outstanding (in shares)	7,391	7,672	7,620
Plus: Incremental shares from assumed conversion of dilutive instruments (in shares)	191	331	356
Weighted Average Shares Outstanding—Diluted (in shares)	7,582	8,003	7,976
Earnings per share—basic (in dollars per share)	$ 15.90	$ 27.13	$ 10.49
Earnings per share—diluted (in dollars per share)	$ 15.50	$ 26.01	$ 10.02