Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Total Attributed To Virtus Investment Partners, Inc.	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non- controlling Interests
Balance at beginning of period, common stock (in shares) at Dec. 31, 2021			7,506,151
Balance at beginning of period at Dec. 31, 2021	$ 836,627	$ 828,277	$ 119	$ 1,276,424	$ 60,962	$ 20	$ (509,248)	$ 8,350
Balance at beginning of period, treasury stock (in shares) at Dec. 31, 2021							4,400,596
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	116,776	117,541			117,541			(765)
Foreign currency translation adjustments, net of tax	(378)	(378)				(378)
Net subscriptions (redemptions) and other	367	2,035		2,035				(1,668)
Cash dividends declared, common	(48,242)	(48,242)			(48,242)
Repurchase of common shares (in shares)			(451,097)				451,097
Repurchase of common shares	(90,000)	(90,000)					$ (90,000)
Issuance of common shares related to employee stock transactions (in shares)			126,500
Issuance of common shares related to employee stock transactions	0	0	$ 1	(1)
Taxes paid on stock-based compensation	(16,830)	(16,830)		(16,830)
Stock-based compensation	24,616	24,616		24,616
Balance at ending of period, common stock (in shares) at Dec. 31, 2022			7,181,554
Balance at end of period at Dec. 31, 2022	822,936	817,019	$ 120	1,286,244	130,261	(358)	$ (599,248)	5,917
Balance at ending of period, treasury stock (in shares) at Dec. 31, 2022							4,851,693
Balance at Dec. 31, 2021	138,965
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Net income (loss)	(10,148)
Net subscriptions (redemptions) and other	(15,099)
Balance at Dec. 31, 2022	113,718
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	130,691	130,621			130,621			70
Foreign currency translation adjustments, net of tax	271	271				271
Net subscriptions (redemptions) and other	1,564	3,188		3,188				(1,624)
Cash dividends declared, common	(53,526)	(53,526)			(53,526)
Repurchase of common shares (in shares)			(223,807)				223,807
Repurchase of common shares	(45,216)	(45,216)					$ (45,216)
Issuance of common shares related to employee stock transactions (in shares)			129,981
Issuance of common shares related to employee stock transactions	0	0	$ 2	(2)
Taxes paid on stock-based compensation	(13,774)	(13,774)		(13,774)
Stock-based compensation	$ 25,343	25,343		25,343
Balance at ending of period, common stock (in shares) at Dec. 31, 2023	12,163,228		7,087,728
Balance at end of period at Dec. 31, 2023	$ 868,289	863,926	$ 122	1,300,999	207,356	(87)	$ (644,464)	4,363
Balance at ending of period, treasury stock (in shares) at Dec. 31, 2023	5,075,500						5,075,500
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Net income (loss)	$ 10,785
Net subscriptions (redemptions) and other	(19,634)
Balance at Dec. 31, 2023	104,869
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	122,515	121,746			121,746			769
Foreign currency translation adjustments, net of tax	(277)	(277)				(277)
Net subscriptions (redemptions) and other	4,260	5,249		5,249				(989)
Cash dividends declared, common	(60,881)	(60,881)			(60,881)
Repurchase of common shares (in shares)			(201,233)				201,233
Repurchase of common shares	(45,130)	(45,130)					$ (45,130)
Issuance of common shares related to employee stock transactions (in shares)			80,652
Issuance of common shares related to employee stock transactions	0	0
Taxes paid on stock-based compensation	(11,681)	(11,681)		(11,681)
Stock-based compensation	$ 24,541	24,541		24,541
Balance at ending of period, common stock (in shares) at Dec. 31, 2024	12,243,880		6,967,147
Balance at end of period at Dec. 31, 2024	$ 901,636	$ 897,493	$ 122	$ 1,319,108	$ 268,221	$ (364)	$ (689,594)	$ 4,143
Balance at ending of period, treasury stock (in shares) at Dec. 31, 2024	5,276,733						5,276,733
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Net income (loss)	$ 29,938
Net subscriptions (redemptions) and other	(27,525)
Balance at Dec. 31, 2024	$ 107,282