Schedule of Borrowings (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total	$ 847,436	$ 865,626
Less current portion	1,087	98,946
Less deferred debt issuance costs	5,203	4,607
Less unaccreted debt discount	1,439	1,674
Total long-term borrowings	839,707	760,399
Other Borrowings
Debt Instrument [Line Items]
Other borrowings	2,436	2,170
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving Facility	195,000	115,000
2.58% Senior Euro Notes, due June 2015
Debt Instrument [Line Items]
Total	0	98,456
4.5% Senior Notes, due December 2020
Debt Instrument [Line Items]
Total	300,000	300,000
4.2% Senior Notes, due December 2021
Debt Instrument [Line Items]
Total	$ 350,000	$ 350,000