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Debt - Additional Information (Detail) - Revolving Credit Facility - USD ($)
1 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Dec. 31, 2020
Feb. 28, 2019
Short-term Debt [Line Items]        
Line of credit facility, maximum borrowing capacity       $ 50,000,000
Interest rate       1.50%
Debt Instrument renewal term   1 year    
Line of credit facility, current borrowing capacity     $ 0  
Line of credit facility, covenant terms, minimum liquidity     $ 50,000,000  
Termination of line of credit facility $ 50,000,000      
Long-term line of credit $ 0