Income Tax - Tax Expense Based on Location (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Current tax provision
Puerto Rico	$ 1,456	$ 3,054	$ 3,855	$ 4,860
United States	93	386	173	200
Foreign countries	1,524	940	4,132	2,827
Total current tax provision	3,073	4,380	8,160	7,887
Deferred tax expense (benefit)
Puerto Rico	(194)	(463)	(1,033)	(1,052)
United States	(11)	20	(98)	(83)
Foreign countries	244	131	18	(664)
Total deferred tax expense (benefit)	$ 39	$ (312)	$ (1,113)	$ (1,799)