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Components of Accumulated Other Comprehensive Loss, Net (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at beginning of period $ 210,279  
Balance at end of period 277,741  
Accumulated Translation Adjustment:    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at beginning of period (27,821) $ (35,644)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 3,380 1,976
Balance at end of period (24,441) (33,668)
Accumulated Deferred Gains (Losses) on Cash Flow Hedges:    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at beginning of period 14 (3)
Amounts reclassified from accumulated other comprehensive loss [1] (14)  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax   13
Balance at end of period   10
Accumulated Effect of Retirement Benefit Obligations:    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at beginning of period (1,518) (1,352)
Amounts reclassified from accumulated other comprehensive loss [2] 18 15
Balance at end of period $ (1,500) $ (1,337)
[1] Amount is recorded as interest expense on the condensed consolidated statement of operations.
[2] Amounts are recorded in selling, general and administrative expense on the condensed consolidated statements of operations.