Segment Information Classified Based on Geographic Location (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 219.6	$ 209.3	$ 222.6	$ 199.8	$ 217.7	$ 185.0	$ 204.4	$ 196.1	$ 851.3	$ 803.2	$ 688.7
Long-lived assets (excluding intangibles)	68.4				71.8				68.4	71.8	62.0
United States
Segment Reporting Information [Line Items]
Net sales									550.2	492.7	420.5
Long-lived assets (excluding intangibles)	46.1				54.5				46.1	54.5	45.4
Europe/Other
Segment Reporting Information [Line Items]
Net sales									244.6	259.0	229.0
Europe
Segment Reporting Information [Line Items]
Long-lived assets (excluding intangibles)	21.9				16.8				21.9	16.8	16.0
Canada
Segment Reporting Information [Line Items]
Net sales									56.5	51.5	39.2
Other
Segment Reporting Information [Line Items]
Long-lived assets (excluding intangibles)	$ 0.4				$ 0.5				$ 0.4	$ 0.5	$ 0.6