Earnings (Loss) Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net Income (Loss)	$ 26,022	$ 30,180	$ 63,889	$ 64,823
Noncontrolling interests	(8,408)	77	(16,417)	4,058
Net Income (Loss) Attributable to Virtus Investment Partners, Inc.	$ 17,614	$ 30,257	$ 47,472	$ 68,881
Shares:
Basic: Weighted-average number of shares outstanding (in shares)	7,127	7,308	7,123	7,277
Plus: Incremental shares from assumed conversion of dilutive instruments (in shares)	115	77	141	121
Diluted: Weighted-average number of shares outstanding (in shares)	7,242	7,385	7,264	7,398
Earnings (Loss) per Share—Basic (in dollars per share)	$ 2.47	$ 4.14	$ 6.66	$ 9.47
Earnings (Loss) per Share—Diluted (in dollars per share)	$ 2.43	$ 4.10	$ 6.54	$ 9.31