Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets, Noncurrent [Abstract]
Recoverable insurance losses	$ 4,056	$ 2,405
Investments held for savings plans	4,807	6,583
Long-term deposits	16,848	16,217
Deferred tax asset	395
Other	5,220	5,847
Total other assets	$ 31,326	$ 31,052