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Equity-based Compensation - Summary of Class B Units' Activity (Details) - Class B Units - QL Holdings LLC and Subsidiaries $ / shares in Units, $ in Thousands | 9 Months Ended
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Sep. 30, 2020 USD ($) $ / shares shares
Share Based Compensation Arrangement by Share Based Payment Award [Line Items] |
Number of units, Beginning balance | shares | 163,800
Number of units, Granted | shares | 25,500
Number of units, Repurchased | shares | (8,568)
Number of units, Forfeited or canceled | shares | (3,432)
Number of units, Ending balance | shares | 177,300
Weighted average grant date fair value/unit, Beginning balance | $ / shares | $ 61.62
Weighted average grant date fair value/unit, Granted | $ / shares | 105.85
Weighted average grant date fair value/unit, Repurchased | $ / shares | 51.03
Weighted average grant date fair value/unit, Forfeited or canceled | $ / shares | 74.22
Weighted average grant date fair value/unit, Ending balance | $ / shares | $ 68.25
Aggregate intrinsic value, Beginning balance | $ | $ 28,622
Aggregate intrinsic value, Ending balance | $ | $ 70,953

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