For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Concentration of Credit Risk - Summary of Funds Provided Ten Percent or More of Total Revenues (Details) - Revenue Benchmark	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2018
Virtus KAR Small Cap Growth Fund
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%
Virtus Newfleet Multi-Sector Short Term Bond Fund
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%
Virtus Vontobel Emerging Markets Opportunities Fund
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%