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Summary of Significant Accounting Policies - Schedule of Goodwill (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill, Beginning Balance | $ 297,607 | $ 296,618
Goodwill, Ending Balance | 359,099 | 297,607
HPI Transaction [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill transaction | 0 | (1,082)
Range Transaction [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill transaction | 0 | 2,071
Drake Transaction [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill transaction | 7,551 | 0
Simpson Transaction [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill transaction | 51,305 | 0
Detroit Speed Transaction [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill transaction | $ 2,636 | $ 0

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