Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Additional Information (Detail)

v3.20.2
Revenue Recognition - Additional Information (Detail) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Revenue From Contract With Customer [Abstract]      
Receivables related to contracts with customers $ 7,870,000 $ 31,620,000  
Assets related to costs to obtain or fulfill contract with customers $ 0   $ 0