XML 116 R102.htm IDEA: XBRL DOCUMENT v3.20.4
Other Non-Current Liabilities - Statement of Composition of Other Non Current Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]    
Deferred revenue $ 11,276 $ 891
Environmental and legal matters 17,921 12,023
Deferred compensation liability 51,508 49,835
Pension liability 17,229 19,407
Other non-current liabilities 16,359 14,024
Total other non-current liabilities $ 114,293 $ 96,180