Restructuring and Other Charges - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net of tax	$ 2,500,000	$ 1,100,000	$ 4,300,000	$ 2,800,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			1,700,000	3,000,000	3,000,000
Cash payments			(3,300,000)		(6,600,000)
Restructuring charges	3,640,000	1,515,000	6,397,000	3,942,000	5,300,000
Restructuring Reserve, ending balance	4,800,000		4,800,000		1,700,000
North America
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			0	300,000	300,000
Cash payments			0		(300,000)
Restructuring charges			0		0
Restructuring Reserve, ending balance	0		0		0
Europe
Restructuring Cost and Reserve [Line Items]
Severance costs			4,500,000	2,200,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			1,700,000	2,500,000	2,500,000
Cash payments			(1,700,000)		(3,800,000)
Restructuring charges	3,000,000	1,100,000	4,500,000		3,000,000
Restructuring Reserve, ending balance	4,500,000		4,500,000		1,700,000
International
Restructuring Cost and Reserve [Line Items]
Severance costs			1,900,000	1,700,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			0	200,000	200,000
Cash payments			(1,600,000)		(2,500,000)
Restructuring charges	600,000	400,000	1,900,000		2,300,000
Restructuring Reserve, ending balance	$ 300,000		$ 300,000		$ 0