Accumulated Other Comprehensive Income , Equity and Redeemable Noncontrolling Interests - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	$ 0	$ 0	$ 1,609	$ 0
Fair value change of derivatives
Fair value change of derivatives, Income before income taxes	(122)	81	(290)	74
Fair value change of derivatives, Income tax expense	33	(26)	102	(24)
Fair value change of derivatives, Consolidated net income	(89)	55	(188)	50
Amortization of defined benefit and other postretirement benefit plans
Amortization of defined benefit and other postretirement benefit plans, Prior service credits	85	169	172	251
Amortization of defined benefit andother postretirement benefit plans, Actuarial gains (losses)	(652)	226	(1,265)	450
Amortization of defined benefit and other postretirement benefit plans, Income before income taxes	(567)	395	(1,093)	701
Amortization of defined benefit and other postretirement benefit plans, Income tax expense	152	(144)	293	(284)
Amortization of defined benefit and other postretirement benefit plans, Consolidated net income	(415)	251	(800)	417
Total reclassifications for the period	(504)	306	621	467
Cost of products sold [Member] | Foreign exchange contract [Member]
Fair value change of derivatives
Fair value change of derivatives, Income before income taxes	$ (122)	$ 81	$ (290)	$ 74