Long-Term Obligations (Details) (USD $)	12 Months Ended
Dec. 28, 2013 Ratio	Dec. 29, 2012
Long-term obligations [Line Items]
Total Long-Term Obligations	$ 38,635,000	$ 6,875,000
Less: Current Maturities	(625,000)	(625,000)
Long-Term Obligations, less Current Maturities	38,010,000	6,250,000
Unamortized debt issuance costs	668,000
Annual payment requirements for long term obligations [Abstract]
2014	625,000
2015	500,000
2016	5,250,000
2017	0
2018	32,260,000
Weighted average interest rate for long-term obligations (in hundredths)	2.74%	6.38%
Revolving Credit Facility [Member]
Long-term obligations [Line Items]
Total Long-Term Obligations	32,260,000	0
Annual payment requirements for long term obligations [Abstract]
Terms of debt agreements	5 years
Borrowing capacity available under committed portion	100,000,000
Additional borrowing capacity	50,000,000
Maturity date	Nov. 01, 2018
Interest rate description	Interest on any loans outstanding under the 2012 Credit Agreement accrues and is payable quarterly in arrears at one of the following rates selected by the Company: (i) the highest of (a) the federal funds rate plus 0.50% plus an applicable margin of 0% to 1%, (b) the prime rate, as defined, plus an applicable margin of 0% to 1% and (c) the Eurocurrency rate, as defined, plus 0.50% plus an applicable margin of 0% to 1% or (ii) the Eurocurrency rate, as defined, plus an applicable margin of 1% to 2%. The applicable margin is determined based upon the ratio of the Company's total debt to EBITDA, as defined in the 2012 Credit Agreement. For this purpose, total debt is defined as total debt less up to $25,000,000 of unrestricted U.S. cash.
Maximum consolidated leverage ratio	3.5
Minimum consolidated interest coverage ratio	3
Maximum Unrestricted U.S. Cash	25,000,000
Remaining borrowing capacity	66,911,000
Revolving Credit Facility [Member] \| Federal Funds Rate [Member]
Annual payment requirements for long term obligations [Abstract]
Basis spread on variable rate	federal funds rate
Basis spread on variable rate (in hundredths)	0.50%
Revolving Credit Facility [Member] \| Federal Funds Rate [Member] \| Minimum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	0.00%
Revolving Credit Facility [Member] \| Federal Funds Rate [Member] \| Maximum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	1.00%
Revolving Credit Facility [Member] \| Prime Rate [Member]
Annual payment requirements for long term obligations [Abstract]
Basis spread on variable rate	prime rate
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Minimum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	0.00%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Maximum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	1.00%
Revolving Credit Facility [Member] \| Eurocurrency Rate [Member]
Annual payment requirements for long term obligations [Abstract]
Basis spread on variable rate	Eurocurrency rate
Basis spread on variable rate (in hundredths)	0.50%
Revolving Credit Facility [Member] \| Eurocurrency Rate [Member] \| Minimum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	0.00%
Revolving Credit Facility [Member] \| Eurocurrency Rate [Member] \| Maximum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	1.00%
Revolving Credit Facility [Member] \| Eurocurrency Rate Two [Member] \| Minimum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	1.00%
Revolving Credit Facility [Member] \| Eurocurrency Rate Two [Member] \| Maximum [Member]
Annual payment requirements for long term obligations [Abstract]
Margin rate of debt instrument (in hundredths)	2.00%
Commercial Real Estate Loan [Member]
Long-term obligations [Line Items]
Total Long-Term Obligations	6,375,000	6,875,000
Annual payment requirements for long term obligations [Abstract]
Terms of debt agreements	10 years
Interest rate description	Interest on the 2006 Commercial Real Estate Loan accrues and is payable quarterly in arrears at one of the following rates selected by the Company: (a) the prime rate or (b) the three-month London Inter-Bank Offered Rate (LIBOR) plus a .75% margin
Face amount of debt	10,000,000
Quarterly payment of principal	125,000
Amount due at maturity	$ 5,000,000
Commercial Real Estate Loan [Member] \| Prime Rate [Member]
Annual payment requirements for long term obligations [Abstract]
Basis spread on variable rate	prime rate
Commercial Real Estate Loan [Member] \| Three Month LIBOR [Member]
Annual payment requirements for long term obligations [Abstract]
Basis spread on variable rate	three-month London Inter-Bank Offered Rate (LIBOR)
Margin rate of debt instrument (in hundredths)	0.75%

Amount of the total principal payments to be made at final maturity of debt.

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Applicable marginal rate of debt instrument basis spread.

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The term of the unsecured revolving credit facility agreement and commercial real estate loan.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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