Segment Information - Schedule Of Reportable Segment Information (Detail) - USD ($) number in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales to external customers	$ 296,031	$ 278,233	$ 295,998	$ 279,268	$ 313,318	$ 273,746	$ 287,011	$ 256,708	$ 1,149,530	$ 1,130,783	$ 1,133,885
Intercompany sales									0	0	0
Operating income									164,192	122,741	134,281
Restructuring charges									5,694	12,258	8,515
Currency exchange losses, net									766	2,204	1,509
Adjusted operating income (loss)									170,652	137,203	144,305
Interest income									2,827	1,525	1,822
Interest expense									16,411	10,854	9,851
Depreciation and amortization									34,813	32,680	29,762
Pension (income) expense									(6,332)	(11,955)	(4,836)
Income tax provision									57,804	44,407	41,044
Total Assets	1,353,920				1,422,863				1,353,920	1,422,863	1,263,412
Capital expenditures									25,523	36,241	33,583
Net property	148,678				155,839				148,678	155,839	151,352
Americas
Segment Reporting Information [Line Items]
Restructuring charges									1,800	3,300	500
International
Segment Reporting Information [Line Items]
Restructuring charges									5,300	7,400	8,000
Corporate
Segment Reporting Information [Line Items]
Sales to external customers									0	0	0
Intercompany sales									0	0	0
Restructuring charges									200	1,600	0
Adjusted operating income (loss)									(38,627)	(38,269)	(37,361)
Interest income									10	6	5
Interest expense									16,411	10,854	9,851
Depreciation and amortization									0	0	0
Pension (income) expense									0	0	0
Income tax provision									8,778	(20,108)	(15,972)
Total Assets	10,903				16,362				10,903	16,362	20,867
Capital expenditures									0	0	0
Net property	1				1				1	1	1
Operating Segments | Americas
Segment Reporting Information [Line Items]
Sales to external customers									678,433	704,754	663,655
Intercompany sales									113,273	134,185	117,681
Adjusted operating income (loss)									$ 162,788	$ 141,971	$ 134,819
Adjusted operating margin %									0.00%	0.00%	0.00%
Interest income									$ 1,914	$ 1,183	$ 1,450
Interest expense									0	0	0
Depreciation and amortization									21,046	21,180	20,145
Pension (income) expense									(544)	(3,759)	(1,977)
Income tax provision									37,838	50,751	49,014
Total Assets	836,243				873,045				836,243	873,045	883,131
Capital expenditures									16,306	22,568	20,268
Net property	95,904				97,021				95,904	97,021	95,933
Operating Segments | International
Segment Reporting Information [Line Items]
Sales to external customers									471,097	426,029	470,230
Intercompany sales									275,640	225,358	131,477
Adjusted operating income (loss)									$ 46,491	$ 33,501	$ 46,847
Adjusted operating margin %									0.00%	0.00%	0.00%
Interest income									$ 903	$ 336	$ 367
Interest expense									0	0	0
Depreciation and amortization									13,767	11,500	9,617
Pension (income) expense									(6,876)	(8,196)	(6,813)
Income tax provision									12,830	13,706	8,633
Total Assets	505,278				532,960				505,278	532,960	359,557
Capital expenditures									9,217	13,673	13,315
Net property	52,773				58,817				52,773	58,817	55,418
Reconciling Items
Segment Reporting Information [Line Items]
Sales to external customers									0	0	0
Intercompany sales									(388,913)	(359,543)	(249,158)
Adjusted operating income (loss)									0	0	0
Interest income									0	0	0
Interest expense									0	0	0
Depreciation and amortization									0	0	0
Pension (income) expense									0	0	0
Income tax provision									(1,642)	58	(631)
Total Assets	1,496				496				1,496	496	(143)
Capital expenditures									0	0	0
Net property	$ 0				$ 0				$ 0	$ 0	$ 0