Schedule of Reportable Segment Information (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
Segment Reporting Information [Line Items]
Sales to external customers	$ 275,159	$ 264,884	$ 822,697	$ 820,629
Intercompany sales	0	0	0	0
Net income:
Continuing operations	18,674	18,987	54,328	60,929
Discontinued operations	631	514	1,491	1,907
North America
Segment Reporting Information [Line Items]
Sales to external customers	131,844	130,919	400,147	402,539
Intercompany sales	28,654	30,696	87,247	91,037
Net income:
Continuing operations	18,018	17,001	49,658	46,638
Discontinued operations	0	0	0	0
Europe
Segment Reporting Information [Line Items]
Sales to external customers	75,785	66,360	229,606	207,480
Intercompany sales	24,424	23,566	81,520	71,235
Net income:
Continuing operations	2,587	3,141	13,027	11,734
Discontinued operations	0	0	0	0
International
Segment Reporting Information [Line Items]
Sales to external customers	67,530	67,605	192,944	210,610
Intercompany sales	4,050	6,581	12,688	17,497
Net income:
Continuing operations	2,821	5,004	9,040	20,570
Discontinued operations	631	514	1,491	1,907
Reconciling Items
Segment Reporting Information [Line Items]
Sales to external customers	0	0	0	0
Intercompany sales	(57,128)	(60,843)	(181,455)	(179,769)
Net income:
Continuing operations	(4,752)	(6,159)	(17,397)	(18,013)
Discontinued operations	$ 0		$ 0	$ 0