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Schedule of Other Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Other Assets, Noncurrent [Abstract]    
Recoverable insurance losses $ 3,985 $ 4,056
Investments held for supplemental savings plan accounts 5,002 4,807
Long-term deposits 17,870 16,848
Deferred tax asset 381 395
Right of use asset 4,400  
Other 5,631 5,220
Total other assets $ 37,269 $ 31,326