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Schedule of Reclassification Adjustments and Other Activities Impacting Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]      
Beginning Balance $ (69,091) $ (51,670) $ (25,743)
Other comprehensive income (loss) before reclassifications 50,602 (18,598) (27,738)
Income tax effect of other comprehensive income (loss) before reclassifications (575) 788 365
Amounts reclassified from accumulated other comprehensive income (loss) into net income (1,943) 593 1,966
Income taxes reclassified into net income 563 (204) (520)
Other comprehensive loss, net of tax: 48,647 (17,421) (25,927)
Ending Balance (20,444) (69,091) (51,670)
Defined Benefit Pension Plans      
Accumulated Other Comprehensive Income Loss [Line Items]      
Beginning Balance (2,550) (2,060) (2,673)
Other comprehensive income (loss) before reclassifications 166 (723) 761
Income tax effect of other comprehensive income (loss) before reclassifications (60) 185 (234)
Amounts reclassified from accumulated other comprehensive income (loss) into net income 78 48 86
Other comprehensive loss, net of tax: 184 (490) 613
Ending Balance (2,366) (2,550) (2,060)
Foreign Currency Translation Adjustments      
Accumulated Other Comprehensive Income Loss [Line Items]      
Beginning Balance (65,762) (49,381) (23,060)
Other comprehensive income (loss) before reclassifications 48,059 (16,678) (25,904)
Income tax effect of other comprehensive income (loss) before reclassifications 148 297 (417)
Other comprehensive loss, net of tax: 48,207 (16,381) (26,321)
Ending Balance (17,555) (65,762) (49,381)
Commodity Hedge Derivatives      
Accumulated Other Comprehensive Income Loss [Line Items]      
Beginning Balance 241 (229)  
Other comprehensive income (loss) before reclassifications 254 154 (849)
Income tax effect of other comprehensive income (loss) before reclassifications (93) (57) 543
Amounts reclassified from accumulated other comprehensive income (loss) into net income [1] (199) 589 124
Income taxes reclassified into net income 74 (216) (47)
Other comprehensive loss, net of tax: 36 470 (229)
Ending Balance 277 241 (229)
Foreign Currency Hedge Derivatives      
Accumulated Other Comprehensive Income Loss [Line Items]      
Beginning Balance (1,020)   (10)
Other comprehensive income (loss) before reclassifications 2,123 (1,351) (1,746)
Income tax effect of other comprehensive income (loss) before reclassifications (570) 363 473
Amounts reclassified from accumulated other comprehensive income (loss) into net income [1] (1,822) (44) 1,756
Income taxes reclassified into net income 489 12 (473)
Other comprehensive loss, net of tax: 220 (1,020) $ 10
Ending Balance $ (800) $ (1,020)  
[1] The amounts reclassified from accumulated other comprehensive income (loss) are included in cost of sales. See Note 14 for information related to the effect of commodity and foreign currency derivative instrument`s on our consolidated statements of income.