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Employee Benefits - Summary of Workers' Compensation Known Claims and IBNR Reserves (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Employee-related Liabilities [Abstract]    
Included in other current liabilities $ 6,777 $ 5,795
Included in other long-term liabilities 10,874 9,447
Workers' Compensation Liability $ 17,651 $ 15,242