Post-Retirement Plans - Additional Information (Detail) (USD $)	6 Months Ended
	Jul. 13, 2013	Jul. 14, 2012
Pension and Other Postretirement Benefits Disclosure [Line Items]
Cash Contributions to pension plans	$ 2,543,000	$ 16,143,000
Expected pension income for fiscal 2013	13,200,000
Total cost and employer contributions	12,700,000	11,000,000
Lepage 401(k) Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Total cost and employer contributions	$ 300,000