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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Date the limited liability company (LLC) or limited partnership (LP) was formed, in CCYY-MM-DD format.

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State in which the limited liability company or limited partnership was organized.

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Amount of the fees associated with providing collateral for the credit facility.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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Organization - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions			9 Months Ended
	Oct. 30, 2020	Feb. 26, 2019	Sep. 30, 2020
QL Holdings LLC and Subsidiaries
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Proceeds from initial public offering, net of underwriting discounts and commissions	$ 124.2
Company formation date			Mar. 07, 2014
State in which the limited liability company or limited partnership was organized.			Delaware
Fees related to the closing of the new secured credit facility		$ 2.3
QL Holdings LLC and Subsidiaries \| General and Administrative Expense
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Total transaction expenses		8.8
QL Holdings LLC and Subsidiaries \| General and Administrative Expense \| Legal Investment Banking And Other Consulting Fees
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Total transaction expenses		7.2
QL Holdings LLC and Subsidiaries \| Transaction Bonuses
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Total transaction expenses		1.6
QL Holdings LLC and Subsidiaries \| Insignia Capital Group
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Aggregate amount of share unit repurchased		$ 62.8
QL Holdings LLC and Subsidiaries \| MediaAlpha Ventures, LLC
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Membership interest purchased			60.00%
QL Holdings LLC and Subsidiaries \| Q L Holdings L L C \| White Mountains Capital Inc
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Ownership percentage			42.00%
QL Holdings LLC and Subsidiaries \| Q L Holdings L L C \| Insignia Capital Group
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Ownership percentage			22.00%
Class A Common \| Initial Public Offering (IPO) \| Subsequent Event
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Shares issued	7,027,606
Public offering price, per share	$ 19.00
Proceeds from initial public offering, net of underwriting discounts and commissions	$ 124.2
Class A Common \| Initial Public Offering (IPO) \| Subsequent Event \| QL Holdings LLC and Subsidiaries
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Proceeds from initial public offering, net of underwriting discounts and commissions	$ 124.2
Class A Common \| Underwriters' Over-allotment Option \| Subsequent Event
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Shares issued	769,104
Class A \| QL Holdings LLC and Subsidiaries \| Insignia Capital Group
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Sale of Class A units, Number of Shares		284,211
Sale of Class A units, Consideration		$ 62.8
Percentage of repurchase of share units		25.00%
Class B \| QL Holdings LLC and Subsidiaries \| Insignia Capital Group
Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Effects Of Changes Net [Line Items]
Percentage of repurchase of share units		25.00%