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Components of Accumulated Other Comprehensive Loss, Net (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year $ 197,728 $ 199,468 $ 188,233
Balance at end of year 210,279 197,728 199,468
Accumulated translation adjustment:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year (35,644) (12,961) (7,680)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 7,823 (23,061) (5,281)
Amounts reclassified from accumulated other comprehensive loss [1]   378  
Balance at end of year (27,821) (35,644) (12,961)
Accumulated deferred gains (losses) on cash flow hedges:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year (3) [2] (20) [2] (18)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 17 17 (2)
Balance at end of year [2] 14 (3) (20)
Accumulated effect of retirement benefit obligations:      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at beginning of year (1,352) (1,204) (2,224)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (228) (202) 941
Amounts reclassified from accumulated other comprehensive loss [3] 62 54 79
Balance at end of year $ (1,518) $ (1,352) $ (1,204)
[1] Amount is recorded in equity in earnings (losses) on the consolidated statements of operations.
[2] Amount is recorded in selling, general and administrative expenses on the consolidated statements of operations.
[3] No amounts were reclassified out of accumulated other comprehensive loss. Amounts reclassified would be recorded in interest expense on the consolidated statements of operations.