XML 73 R56.htm IDEA: XBRL DOCUMENT v3.20.4
Leases - Summary of Operating Lease Costs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Lease Cost [Abstract]      
Operating lease cost $ 6,917 $ 5,155 $ 4,503