Accumulated Other Comprehensive Income , Equity and Redeemable Noncontrolling Interests - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair value change of derivatives
Fair value change of derivatives, Income before income taxes	$ 81	$ 333	$ 74	$ 343
Fair value change of derivatives, Income tax expense	(26)	(107)	(24)	(110)
Fair value change of derivatives, Consolidated net income	55	226	50	233
Amortization of defined benefit and other postretirement benefit plans
Amortization of defined benefit and other postretirement benefit plans, Prior service credits	169	153	251	311
Amortization of defined benefit and other postretirement benefit plans, Actuarial losses	226	(461)	450	(932)
Amortization of defined benefit and other postretirement benefit plans, Income before income taxes	395	(308)	701	(621)
Amortization of defined benefit and other postretirement benefit plans, Income tax expense	(144)	84	(284)	181
Amortization of defined benefit and other postretirement benefit plans, Consolidated net income	251	(224)	417	(440)
Total reclassifications for the period	306	2	467	(207)
Interest expense, net of interest income [Member] | Interest rate contract [Member]
Fair value change of derivatives
Fair value change of derivatives, Income before income taxes	0	270	0	230
Cost of products sold [Member] | Foreign exchange contract [Member]
Fair value change of derivatives
Fair value change of derivatives, Income before income taxes	$ 81	$ 63	$ 74	$ 113