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Concentration of Credit Risk (Tables)
12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
Summary of Funds Provided Ten Percent or More of Total Revenues
The following client including the Company's sponsored funds provided 10 percent or more of the Company's investment management, administration and shareholder service fee revenues: 
202120202019
Virtus KAR Small Cap Growth Fund*10%*
* Less than 10 percent of total revenues of the Company