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Equity Method Investments - Summary of Combined Balance Sheet Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]        
Current assets $ 773,598 $ 629,755    
TOTAL 2,293,503 1,908,913    
Current liabilities 529,727 404,709    
Stockholders' Equity 617,768 404,112 $ 235,701 $ 285,757
TOTAL 2,293,503 1,908,913    
Equity Method Investee        
Schedule of Equity Method Investments [Line Items]        
Current assets 492,025 442,253    
Noncurrent assets 970 1,285    
TOTAL 492,995 443,538    
Current liabilities 270,536 219,702    
Stockholders' Equity 222,459 223,836    
TOTAL $ 492,995 $ 443,538