Income Tax - Segregation of Income Tax Expense (Benefit) Based on Location of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Current tax provision
Current tax provision (benefit), Puerto Rico	$ 1,155	$ 937
Current tax provision (benefit), United States	141	198
Current tax provision (benefit), Foreign countries	750	2,454
Total current tax provision	2,046	3,589
Deferred tax expense (benefit)
Deferred tax provision (benefit), Puerto Rico	299	27
Deferred tax provision (benefit) , United States	(26)	(1)
Deferred tax provision (benefit), Foreign countries	(73)	(1,454)
Total deferred tax expense (benefit)	$ 200	$ (1,428)