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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