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Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Cash and cash equivalents maturity period, maximum   90 days
Short-term lease exception - Lease term 12 months 12 months
Accounting Standards Update 470-20 [Member]    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Reduction of interest expense per quarter $ 420