Employee Benefit Plans (Details) (USD $)	12 Months Ended									1 Months Ended	3 Months Ended	12 Months Ended											12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended																																																																									12 Months Ended
	Dec. 31, 2012	Dec. 30, 2011	Dec. 31, 2010	Dec. 31, 2012 UK Plan	Dec. 30, 2011 UK Plan	Dec. 31, 2010 UK Plan	Dec. 31, 2012 United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2010 United States Pension Plans of US Entity, Defined Benefit [Member]	Jul. 31, 2012 Final [Member] U.S. Commercial Products	Jul. 01, 2011 Scenario, Previously Reported [Member] U.S. Commercial Products	Dec. 31, 2012 Change In Benefit Obligation [Member] UK Plan	Dec. 30, 2011 Change In Benefit Obligation [Member] UK Plan	Dec. 31, 2012 Change In Benefit Obligation [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Change In Benefit Obligation [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Change In Plan Assets [Member] UK Plan	Dec. 30, 2011 Change In Plan Assets [Member] UK Plan	Dec. 31, 2012 Change In Plan Assets [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Change In Plan Assets [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Equity Securities [Member] UK Plan	Dec. 30, 2011 Equity Securities [Member] UK Plan	Dec. 31, 2010 Equity Securities [Member] UK Plan	Dec. 31, 2012 Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2010 Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Debt Securities [Member] UK Plan	Dec. 30, 2011 Debt Securities [Member] UK Plan	Dec. 31, 2010 Debt Securities [Member] UK Plan	Dec. 31, 2012 Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2010 Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Cash and Cash Equivalents [Member] UK Plan	Dec. 30, 2011 Cash and Cash Equivalents [Member] UK Plan	Dec. 31, 2010 Cash and Cash Equivalents [Member] UK Plan	Dec. 31, 2012 Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2010 Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Money Market Funds [Member] UK Plan	Dec. 30, 2011 Money Market Funds [Member] UK Plan	Dec. 31, 2010 Money Market Funds [Member] UK Plan	Dec. 31, 2012 Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2010 Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Global Equities [Member] UK Plan	Dec. 30, 2011 Global Equities [Member] UK Plan	Dec. 31, 2012 Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Debt Securities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Debt Securities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Money Market Funds [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Money Market Funds [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Global Equities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Global Equities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 1 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Debt Securities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Debt Securities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Money Market Funds [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Money Market Funds [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Global Equities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Global Equities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 2 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Equity Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Debt Securities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Debt Securities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Debt Securities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Cash and Cash Equivalents [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Cash and Cash Equivalents [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Money Market Funds [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Money Market Funds [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Money Market Funds [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Global Equities [Member] UK Plan	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Global Equities [Member] UK Plan	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 30, 2011 Fair Value, Inputs, Level 3 [Member] Global Equities [Member] United States Pension Plans of US Entity, Defined Benefit [Member]	Dec. 31, 2012 Teamsters Pension Trust Fund of Philadelphia and Vicinity [Member]		Dec. 30, 2011 Teamsters Pension Trust Fund of Philadelphia and Vicinity [Member]		Dec. 31, 2010 Teamsters Pension Trust Fund of Philadelphia and Vicinity [Member]		Dec. 31, 2012 Warehouse Employees Local 169 and Employers Joint Pension Fund [Member]	Dec. 30, 2011 Warehouse Employees Local 169 and Employers Joint Pension Fund [Member]	Dec. 31, 2010 Warehouse Employees Local 169 and Employers Joint Pension Fund [Member]
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Defined Benefit Plan, Benefit Obligation												$ 45,695,000	$ 43,685,000	$ 11,778,000	$ 9,258,000
Service cost				0	0	0	59,000	59,000	327,000			0	0	59,000	59,000
Interest cost				2,371,000	2,381,000	2,544,000	513,000	510,000	526,000			2,371,000	2,381,000	513,000	510,000
Defined Benefit Plan, Actuarial Gain (Loss)												60,000	1,639,000	988,000	2,205,000	1,524,000	(1,807,000)	854,000	312,000
Defined Benefit Plan, Benefits Paid												(1,995,000)	(1,782,000)	(286,000)	(254,000)	(1,995,000)	(1,782,000)	(286,000)	(254,000)
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)												2,084,000	(228,000)	0	0
Defined Benefit Plan, Benefit Obligation												48,215,000	45,695,000	13,052,000	11,778,000
Defined Benefit Plan, Accumulated Benefit Obligation												48,215,000	45,695,000	13,052,000	11,778,000
Defined Benefit Plan, Fair Value of Plan Assets				26,109,000			7,185,000									26,109,000	26,682,000	7,185,000	6,956,000				2,284,000			9,555,000			1,653,000			295,000			1,919,000			0			585,000			0	16,259,000	1,191,000	744,000	20,529,000	26,109,000	7,897,000	7,185,000	4,002,000	2,284,000	10,702,000	9,555,000	1,716,000	1,653,000	286,000	295,000	125,000	1,919,000	9,541,000	0	863,000	585,000	0	16,259,000	1,191,000	744,000	8,898,000	0	0	0	0	0	0	0	0	0	0	0	0	0	8,898,000	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Expected return on assets				(1,680,000)	(1,847,000)	(1,709,000)	(576,000)	(555,000)	(498,000)							(1,680,000)	(1,847,000)	0	0
Defined Benefit Plan, Contributions by Employer																872,000	1,251,000	178,000	182,000
Defined Benefit Plan, Administration Expenses																0	0	(34,000)	(11,000)
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets																1,237,000	(82,000)	0	0
Defined Benefit Plan, Fair Value of Plan Assets				29,427,000	26,109,000		7,897,000	7,185,000								29,427,000	26,109,000	7,897,000	7,185,000				4,002,000			10,702,000			1,716,000			286,000			125,000			18,439,000			863,000			0	16,259,000	1,191,000	744,000	20,529,000	26,109,000	7,897,000	7,185,000	4,002,000	2,284,000	10,702,000	9,555,000	1,716,000	1,653,000	286,000	295,000	125,000	1,919,000	9,541,000	0	863,000	585,000	0	16,259,000	1,191,000	744,000	8,898,000	0	0	0	0	0	0	0	0	0	0	0	0	0	8,898,000	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Defined Benefit Plan, Funded Status of Plan																(18,788,000)	(19,586,000)	(5,155,000)	(4,593,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities																(18,788,000)	(19,586,000)	(5,155,000)	(4,593,000)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	10,134,000	11,255,000
Net amounts recognized in balance sheets	10,134,000	11,255,000
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss				(1,483,000)	3,300,000	(4,444,000)	743,000	2,448,000	100,000
Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, before Tax				0	0	0	0	0	(29,000)
Defined Benefit Plan, Amortization of Net Gains (Losses)				(92,000)	0	(306,000)	(252,000)	(43,000)	(34,000)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax				0	0	0	0	0	(1,000)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax				0	25,000	0	0	0	0
Total recognized in other comprehensive income				(1,575,000)	3,325,000	(4,750,000)	491,000	2,405,000	36,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year				600,000			100,000
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				4.50%	4.90%		4.01%	4.40%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate				4.90%	5.40%	5.66%	4.40%	5.57%	6.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase				0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets				6.47%	6.78%	7.00%	8.00%	8.00%	8.00%
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Service Cost				0	0	0	59,000	59,000	327,000			0	0	59,000	59,000
Defined Benefit Plan, Interest Cost				2,371,000	2,381,000	2,544,000	513,000	510,000	526,000			2,371,000	2,381,000	513,000	510,000
Defined Benefit Plan, Expected Return on Plan Assets				1,680,000	1,847,000	1,709,000	576,000	555,000	498,000							1,680,000	1,847,000	0	0
Amortization of actuarial loss				92,000	0	306,000	252,000	43,000	34,000
Amortization of prior service cost				0	0	0	0	0	1,000
Effect of curtailment				0	0	0	0	0	29,000
Total Company defined benefit net periodic pension cost				783,000	534,000	1,141,000	248,000	57,000	419,000
Multi-employer benefit expense	1,168,000	1,247,000	1,144,000	0	0	0	1,303,000	1,247,000	1,144,000																																																																																																									213,000	[1]	211,000	[1]	239,000	[1]	955,000	1,036,000	905,000
Multi-employer pension withdrawal penalty	39,000	1,200,000	0	0	0	0	39,000	1,200,000	0	1,200,000	1,200,000
Net periodic pension cost				783,000	534,000	1,141,000	1,590,000	2,504,000	1,563,000
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Actual Plan Asset Allocations																				0.00%	62.00%	67.00%	66.00%	42.00%	50.00%	36.00%	37.00%	32.00%	22.00%	23.00%	27.00%	1.00%	1.00%	1.00%	1.00%	27.00%	23.00%	63.00%	0.00%	0.00%	11.00%	8.00%	0.00%
Defined Benefit Plan, Target Plan Asset Allocations																				0.00%			60.00%			35.00%			37.00%			0.00%			3.00%			0.00%			0.00%
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months				1,587,000			239,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Two				1,803,000			271,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Three				1,810,000			311,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Four				1,839,000			354,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Five				1,950,000			399,000
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter				11,300,000			2,939,000
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Contributions	500.00%	500.00%
Supplemental Executive Retirement Plan Liability	400,000	500,000
Defined Contribution Plan, Employer Discretionary Contribution Amount				$ 2,200,000	$ 2,100,000	$ 1,300,000	$ 600,000	$ 600,000	$ 500,000

[1] The Trustees of the Teamsters Pension Trust Fund of Philadelphia and Vicinity elected to apply the special amortization and special asset valuation provisions provided for under the Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act of 2010 (PRA 2010) for Plan Years beginning January 1, 2009 and later. The special amortization rule allows that portion of the plan’s experience loss attributable to net investment losses incurred in the year ended December 31, 2008 to be amortized over a 30-year period rather than a 15-year period. The special asset valuation rule allows the recognition of investment losses in the year ended December 31, 2008 to be spread over a 10-year period rather than a 5-year period.