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Components of Accumulated Other Comprehensive Loss, Net (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Accumulated translation adjustment:          
Balance at beginning of period $ (1,212) $ (3,194) $ (2,944) $ (2,804)  
Translation gain (loss) during period (3,309) 200 (1,577) (190)  
Balance at end of period (4,521) (2,994) (4,521) (2,994)  
Accumulated deferred losses on cash flow hedges:          
Balance at beginning of period (65) (28) (31) (272)  
Derivative fair value adjustment, net of taxes of $49 and $32 for the three months ended September 30, 2014 and 2013, respectively, and $26 and $131 for the nine months ended September 30, 2014 and 2013, respectively 73 (48) 39 196  
Balance at end of period 8 (76) 8 (76)  
Accumulated effect of retirement benefit obligations:          
Balance at beginning of period (731) (1,134) (745) (1,160)  
Amounts reclassified from accumulated other comprehensive loss:          
Amortization of actuarial losses, net of taxes of $5 and $8 for the three months ended September 30, 2014 and 2013, respectively, and $14 and $27 for the nine months ended September 30, 2014 and 2013, respectively 7 [1] 14 [1] 21 [1] 40 [1]  
Balance at end of period (724) (1,120) (724) (1,120)  
Total accumulated other comprehensive loss at end of period $ (5,237) $ (4,190) $ (5,237) $ (4,190) $ (3,720)
[1] Amounts are recorded in selling, general and administrative expense on the Condensed consolidated statements of operations.