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Components of Accumulated Other Comprehensive Loss, Net (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year $ 279,493 $ 210,279  
Balance at end of year 276,311 277,741  
Total accumulated other comprehensive loss at end of period (32,701) (25,941) $ (34,616)
Accumulated translation adjustment:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year (33,727) (27,821)  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 1,306 3,380  
Balance at end of year (32,421) (24,441)  
Accumulated deferred gains (losses) on cash flow hedges:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year 161 14  
Amounts reclassified from accumulated other comprehensive loss [1] 29 (14)  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax [1] 567    
Balance at end of year [1] 757    
Accumulated effect of retirement benefit obligations:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year [2] (1,050) (1,518)  
Amounts reclassified from accumulated other comprehensive loss [2] 13 18  
Balance at end of year [2] $ (1,037) $ (1,500)  
[1] Amounts are recorded on the condensed consolidated statement of operations as a component of cost of sales in the three month period ended March 31, 2019 and in interest expense in the three month period ended March 31, 2018.
[2] Amounts are recorded in selling, general and administrative expense on the condensed consolidated statements of operations.