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, 2022			7,181,554
Balance at beginning of period at Dec. 31, 2022	$ 822,936	$ 817,019	$ 120	$ 1,286,244	$ 130,261	$ (358)	$ (599,248)	$ 5,917
Balance at beginning of period, treasury stock (in shares) at Dec. 31, 2022							4,851,693
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			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
Balance at Dec. 31, 2022	113,718
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	6,967,147		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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	137,385	138,396			138,396			(1,011)
Foreign currency translation adjustments, net of tax	826	826				826
Net subscriptions (redemptions) and other	1,698	4,028		4,028				(2,330)
Cash dividends declared, common	(65,719)	(65,719)			(65,719)
Repurchase of common shares (in shares)			(347,364)				347,364
Repurchase of common shares	(59,999)	(59,999)					$ (59,999)
Issuance of common shares related to employee stock transactions (in shares)			75,398
Issuance of common shares related to employee stock transactions	0	0	$ 1	(1)
Taxes paid on stock-based compensation	(7,847)	(7,847)		(7,847)
Stock-based compensation	$ 26,865	26,865		26,865
Balance at ending of period, common stock (in shares) at Dec. 31, 2025	6,695,181		6,695,181
Balance at end of period at Dec. 31, 2025	$ 934,845	$ 934,043	$ 123	$ 1,342,153	$ 340,898	$ 462	$ (749,593)	$ 802
Balance at ending of period, treasury stock (in shares) at Dec. 31, 2025	5,624,097						5,624,097
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward]
Net income (loss)	$ (1,397)
Net subscriptions (redemptions) and other	(2,951)
Balance at Dec. 31, 2025	$ 102,934