Employee Retirement and Profit Sharing Plans - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended						1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Minimum	Dec. 31, 2013 Minimum Defined Contribution Pension	Dec. 31, 2013 Maximum	Dec. 31, 2013 Maximum Defined Contribution Pension	Dec. 31, 2013 Employee Retirement And Profit Sharing Plans	Dec. 31, 2012 Employee Retirement And Profit Sharing Plans	Jul. 31, 2009 Master Trust Equity Securities	Dec. 31, 2013 Master Trust Equity Securities	Jul. 31, 2009 Master Trust Fixed Income Securities	Dec. 31, 2013 Master Trust Fixed Income Securities	Jul. 31, 2009 Master Trust Cash and Cash Equivalents	Dec. 31, 2013 Master Trust Cash and Cash Equivalents	Jul. 31, 2009 Master Trust Other Investments	Dec. 31, 2013 Master Trust Other Investments
Defined Benefit Plan Disclosure [Line Items]
Minimum requisite service period, years	One or more years of service
Unrecognized prior service costs, before tax							$ 3,500,000	$ 4,300,000
Unrecognized prior service costs, net of tax							2,100,000	2,600,000
Unrecognized actuarial losses, before tax							86,800,000	157,900,000
Unrecognized actuarial losses, net of tax							53,100,000	97,000,000
Prior service costs expected to be recognized next fiscal year							787,150
Prior service costs expected to be recognized next fiscal year, net of tax							481,972
Actuarial losses expected to be recognized next fiscal year							5,100,000
Actuarial losses expected to be recognized next fiscal year, net of tax							3,100,000
Underfunded status of the plans							(23,727,000)	(96,704,000)
Current accrued pension liability							800,000
Employer expected contribution in 2014	2,800,000						12,400,000
Accumulated benefit obligation	$ 290,600,000	$ 340,800,000
Frozen defined benefit plan obligations	90.00%
Weighted average discount rate							4.90%	3.70%
Targets investment in equity securities, fixed income, cash equivalents and other investments, percentage									59.00%		37.00%				1.00%
Targets investment in equity securities, fixed income, cash equivalents and other investments, percentage													3.00%
Investment in equity securities, fixed income, cash equivalents and other investments, percentage										62.00%		36.00%		2.00%		1.00%
Plan participants' contributions, allowed percentage of participants' annual compensation				1.00%		20.00%
Plans in red zone					65.00%
Plans in yellow zone					80.00%
Plans in green zone			80.00%