Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Current [Abstract]
Taxes payable	$ 17,802	$ 13,167
Lease liability - operating	710
Accrued property and liability losses	583	2,726
Other	5,347	5,199
Other current liabilities	$ 24,442	$ 21,092