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Accrued Expenses - Constituents of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Constituents of accrued expenses    
Company bonuses $ 4,895 $ 8,238
Salaries, commissions, and payroll taxes 4,859 5,081
Vacation 4,482 4,328
Warranty obligations 4,174 4,086
Foreign retirement obligations 3,249 3,233
Japanese consumption taxes 412 2,148
Other 11,201 8,500
Accrued expenses $ 33,272 $ 35,614