Employee Benefit Plans, Retirement Plans (Details) (USD $)	12 Months Ended
	Dec. 29, 2012		Dec. 31, 2011		Jan. 01, 2011
Components of Net Periodic Benefit Cost [Abstract]
Curtailment gain					$ (219,000)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of actuarial loss expected next year	662,000
Amortization of unrecognized prior service cost expected next year	140,000
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	31,594,000		26,734,000
Service cost	991,000		855,000		820,000
Interest cost	1,313,000		1,298,000		1,294,000
Actuarial loss	1,046,000		4,451,000
Prior service cost	0		0
Benefits paid	(3,201,000)		(1,744,000)
Effect of currency translation	0		0
Benefit obligation at end of year	31,743,000		31,594,000		26,734,000
Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	26,393,000		23,965,000
Actual return on plan assets	2,576,000		3,272,000
Employer contribution	960,000		900,000
Benefits paid	(3,201,000)		(1,744,000)
Fair value of plan assets at end of year	26,728,000		26,393,000		23,965,000
Unfunded status	(5,015,000)		(5,201,000)
Accumulated benefit obligation as of year end	26,270,000		25,928,000
Amounts recognized in the balance sheet consist of [Abstract]
Current liability	0		0
Non-current liability	(5,015,000)		(5,201,000)
Amounts Recognized in Accumulated Other Comprehensive Items Before Tax Consist of [Abstract]
Unrecognized net actuarial loss	(9,656,000)		(10,205,000)
Unrecognized prior service cost	(273,000)		(329,000)
Total	(9,929,000)		(10,534,000)
Change in Amounts Recognized in Accumulated Other Comprehensive Items, Before Tax [Abstract]
Current year unrecognized net actuarial loss	(85,000)		(2,608,000)
Current year prior service cost	0		0
Amortization of unrecognized prior service cost	56,000		55,000
Amortization of unrecognized net actuarial loss	634,000		433,000
Effect of currency translation	0		0
Total	605,000		(2,120,000)
Weighted Average Assumptions Used to Determine Benefit Obligation [Abstract]
Discount rate (in hundredths)	3.89%		4.28%
Rate of compensation increase (in hundredths)	3.50%		4.00%
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation	31,743,000		31,594,000
Fair value of plan assets	26,728,000		26,393,000
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	0		0
Fair value of plan assets	0		0
Components of Net Periodic Benefit Cost [Abstract]
Service cost	991,000		855,000		820,000
Interest cost	1,313,000		1,298,000		1,294,000
Expected return on plan assets	(1,616,000)		(1,429,000)		(1,412,000)
Recognized net actuarial loss	634,000		433,000		439,000
Amortization of prior service cost (income)	56,000		55,000		55,000
Net periodic benefit cost	1,378,000		1,212,000		1,196,000
Curtailment gain	0		0		0
Net periodic benefit cost	1,378,000		1,212,000		1,196,000
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	4.28%		5.25%		5.75%
Expected long-term return on plan assets (in hundredths)	6.25%		6.25%		7.00%
Rate of compensation increase (in hundredths)	4.00%		4.00%		4.00%
Mutual Funds [Abstract]
Fair value of plan assets	26,728,000		26,393,000
Target Asset Allocations [Abstract]
Neutral (in hundredths)	100.00%
Expected contributions to noncontributory defined benefit plan for the next year	1,080,000
Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2013	1,614,000
2014	1,318,000
2015	2,115,000
2016	1,474,000
2017	3,039,000
2018-2022	12,718,000
Other Benefits [Member]
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	5,402,000		3,975,000
Service cost	143,000		187,000		100,000
Interest cost	225,000		237,000		218,000
Actuarial loss	425,000		527,000
Prior service cost	0		960,000
Benefits paid	(275,000)		(437,000)
Effect of currency translation	48,000		(47,000)
Benefit obligation at end of year	5,968,000		5,402,000		3,975,000
Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0		0
Actual return on plan assets	0		0
Employer contribution	275,000		437,000
Benefits paid	(275,000)		(437,000)
Fair value of plan assets at end of year	0		0		0
Unfunded status	(5,968,000)		(5,402,000)
Accumulated benefit obligation as of year end	1,777,000		1,345,000
Amounts recognized in the balance sheet consist of [Abstract]
Current liability	(251,000)		(444,000)
Non-current liability	(5,717,000)		(4,958,000)
Amounts Recognized in Accumulated Other Comprehensive Items Before Tax Consist of [Abstract]
Unrecognized net actuarial loss	(1,251,000)		(857,000)
Unrecognized prior service cost	(882,000)		(908,000)
Total	(2,133,000)		(1,765,000)
Change in Amounts Recognized in Accumulated Other Comprehensive Items, Before Tax [Abstract]
Current year unrecognized net actuarial loss	(425,000)		(527,000)
Current year prior service cost	0		(960,000)
Amortization of unrecognized prior service cost	28,000		15,000
Amortization of unrecognized net actuarial loss	36,000		28,000
Effect of currency translation	(7,000)		4,000
Total	(368,000)		(1,440,000)
Weighted Average Assumptions Used to Determine Benefit Obligation [Abstract]
Discount rate (in hundredths)	3.52%		4.44%
Rate of compensation increase (in hundredths)	3.15%		3.28%
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation	2,456,000		1,790,000
Fair value of plan assets	0		0
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	1,777,000		1,345,000
Fair value of plan assets	0		0
Components of Net Periodic Benefit Cost [Abstract]
Service cost	143,000		187,000		100,000
Interest cost	225,000		237,000		218,000
Expected return on plan assets	0		0		0
Recognized net actuarial loss	36,000		28,000		13,000
Amortization of prior service cost (income)	28,000		15,000		(58,000)
Net periodic benefit cost	432,000		467,000		273,000
Curtailment gain	0		0		(219,000)
Net periodic benefit cost	432,000		467,000		54,000
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	4.44%		5.04%		5.52%
Expected long-term return on plan assets (in hundredths)	0.00%		0.00%		0.00%
Rate of compensation increase (in hundredths)	3.57%		3.28%		2.00%
Assumed Health Care Cost Trend Rates [Abstract]
Healthcare cost trend rate assumed for next year (in hundredths)	8.00%		8.00%
Ultimate healthcare cost trend rate (in hundredths)	0.00%		0.00%
Year assumed rate reaches ultimate rate	2018		2018
Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract]
Effect on total of service and interest cost components - (expense) income - increase	0
Effect on total of service and interest cost components - (expense) income, decrease	0
Effect on post-retirement benefit obligation - (increase) decrease - increase	(1,000)
Effect on post-retirement benefit obligation - (increase) decrease - decrease	1,000
Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2013	252,000
2014	440,000
2015	259,000
2016	327,000
2017	894,000
2018-2022	2,037,000
Post-Retirement Welfare Benefits Plan [Member]
Post-Retirement Welfare Benefits Plan [Abstract]
Maximum annual contribution per participant	358
Percentage paid by employer for welfare benefits plan, retirement date prior to January 1, 2005 (in hundredths)	75.00%
Percentage paid by employer for welfare benefits plan, retirement date after January 1, 2005 (in hundredths)	50.00%
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	18,820,000		17,923,000
Significant Observable Inputs (Level 2) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	7,908,000		8,470,000
Significant Unobservable Inputs (Level 3) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	0		0
U.S. Equity [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	3,331,000	[1]	3,040,000	[1]
U.S. Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	3,331,000	[1]	3,040,000	[1]
U.S. Equity [Member] | Significant Observable Inputs (Level 2) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	0	[1]	0	[1]
U.S. Equity [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	0	[1]	0	[1]
International Equity [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	848,000	[1]	697,000	[1]
International Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	848,000	[1]	697,000	[1]
International Equity [Member] | Significant Observable Inputs (Level 2) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	0	[1]	0	[1]
International Equity [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	0	[1]	0	[1]
Fixed Income [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	22,549,000	[2]	22,656,000	[2]
Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	14,641,000	[2]	14,186,000	[2]
Fixed Income [Member] | Significant Observable Inputs (Level 2) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	7,908,000	[2]	8,470,000	[2]
Fixed Income [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pension Benefits [Member]
Mutual Funds [Abstract]
Fair value of plan assets	$ 0	[2]	$ 0	[2]
Equity Securities [Member] | Pension Benefits [Member]
Target Asset Allocations [Abstract]
Minimum (in hundredths)	10.00%
Neutral (in hundredths)	15.00%
Maximum (in hundredths)	20.00%
Debt Securities [Member] | Pension Benefits [Member]
Target Asset Allocations [Abstract]
Minimum (in hundredths)	80.00%
Neutral (in hundredths)	85.00%
Maximum (in hundredths)	90.00%
Maximum average maturity of debt securities (weighted)	10 years
Average benchmark duration for debt securities	5 years

[1] Common stock index funds.

[2] Investments in commingled funds that invest in a diversified blend of investment and non-investment grade fixed income securities.