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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Amount | $ 182,315 | $ 182,315 | $ 182,309
Accumulated Amortization | (118,381) | (110,951) | (79,612)
Net Amount | $ 63,934 | $ 71,364 | 102,697
Trademarks [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | indefinite | indefinite |
Gross Amount | $ 50,000 | $ 50,000 | 50,000
Net Amount | $ 50,000 | $ 50,000 | 50,000
Customer relationships [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 4 years | 4 years |
Gross Amount | $ 75,000 | $ 75,000 | 75,000
Accumulated Amortization | (71,875) | (67,187) | (48,437)
Net Amount | $ 3,125 | $ 7,813 | 26,563
Purchased technology [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 5 years | 5 years |
Gross Amount | $ 45,423 | $ 45,423 | 45,423
Accumulated Amortization | (35,314) | (33,149) | (24,487)
Net Amount | $ 10,109 | $ 12,274 | 20,936
Development costs [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 3 years | 3 years |
Gross Amount | $ 9,486 | $ 9,486 | 9,486
Accumulated Amortization | (8,884) | (8,434) | (5,096)
Net Amount | $ 602 | $ 1,052 | 4,390
Software [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 4 years | 4 years |
Gross Amount | $ 2,406 | $ 2,406 | 2,400
Accumulated Amortization | (2,308) | (2,181) | (1,592)
Net Amount | $ 98 | $ 225 | $ 808

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