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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% |

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