Restructuring and Asset Impairments - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 28, 2014 USD ($)	Jun. 28, 2014 USD ($)	Mar. 29, 2014 Plant
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.1	$ 2.3
Asset impairment charges	0.3	1.9
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.1	2.2
Asset impairment charges		0.9
United Kingdom [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.1
Asset impairment charges	0.3	1.0
2014 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Number of plants to be closed | Plant			2
Restructuring charges	0.1	2.3
Asset impairment charges	$ 0.3	$ 1.9
2014 Restructuring Plan [Member] | North America [Member]
Restructuring Cost and Reserve [Line Items]
Number of plants to be closed | Plant			1
2014 Restructuring Plan [Member] | United Kingdom [Member]
Restructuring Cost and Reserve [Line Items]
Number of plants to be closed | Plant			1