Income Tax (Benefit) Expense - Deferred Income Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Loss carryforwards	$ 53.8	$ 43.3
Leases	4.1	5.1
Property, plant & equipment	4.5	3.2
Liabilities and reserves	12.0	11.7
Stock options	0.9	2.2
Inventories	3.7	4.9
Other	4.1	2.5
Deferred tax assets, gross	83.1	72.9
Property, plant & equipment	(63.6)	(59.2)
Intangible assets	(15.9)	(10.5)
Other	(0.8)	(0.9)
Deferred tax liabilities	(80.3)	(70.6)
Valuation allowance	(27.5)	(22.2)
Net deferred tax liability	$ (24.7)	$ (19.9)