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Stock Plans and Stock Compensation Expense Share-based Awards (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 28, 2019
USD ($)
yr
$ / shares
Rate
shares
Dec. 29, 2018
USD ($)
$ / shares
Rate
shares
Dec. 30, 2017
USD ($)
days
$ / shares
Rate
shares
Jul. 30, 2018
USD ($)
$ / shares
shares
Mar. 12, 2018
USD ($)
$ / shares
shares
Sep. 18, 2017
USD ($)
$ / shares
shares
Sep. 01, 2017
USD ($)
$ / shares
shares
Mar. 10, 2017
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]                
Outstanding 570,000 434,000            
Outstanding 461,000 570,000 434,000          
Share-based Arrangements with Nonemployee Directors [Abstract]                
Minimum Market Value Per Share, Calculation of Shares | $ / shares $ 5.00              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]                
Exercised (29,001) (39,711) 0          
Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Award Vesting Period 3 years 3 years            
Restricted Stock Granted in Period       10,000 297,292 10,000 10,000 40,000
Grant Date Fair Value of Restricted Stock | $       $ 20 $ 832 $ 41 $ 42 $ 140
Weighted Average Grant Date Fair Value of Restricted Stock | $ / shares       $ 2.00 $ 2.80 $ 4.05 $ 4.15 $ 3.50
Share Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 6 years 1 month              
Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 8 years 7 months              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]                
Outstanding 569,998 433,841 457,378          
Weighted Average Grant Date Fair Value of Outstanding Shares | $ / shares $ 4.04 $ 6.66 $ 7.41          
Granted   307,292 60,000          
Weighted Average Grant Date Fair Value Granted During the Year | $ / shares   $ 2.77 $ 3.70          
Vested (90,791) (64,939) (78,908)          
Weighted Average Grant Date Fair Value of Awards Vested | $ / shares $ 2.83 $ 6.58 $ 8.79          
Forfeited (17,784) (106,196) (4,629)          
Weighted Average Grant Date Fair Value of Forfeitures | $ / shares $ 3.48 $ 9.51 $ 5.96          
Outstanding 461,423 569,998 433,841          
Weighted Average Grant Date Fair Value of Outstanding Shares | $ / shares $ 4.30 $ 4.04 $ 6.66          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]                
Nonvested Awards, Compensation Not yet Recognized | $ $ 989              
Nonvested Awards, Vested in Period, Fair Value | $ $ 94 $ 173 $ 276          
Primary Long-Term Incentive Award [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Award Vesting Period 3 years              
Stock Performance Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 4 months              
Share-based Arrangements with Nonemployee Directors [Abstract]                
Nonemployee Directors Fees, Paid in Cash | $ $ 18 18 18          
Nonemployee Directors Fees, Value Received in Stock Performance Units | $ $ 18 $ 18 $ 18          
Stock Performance Units, Outstanding 112,320              
Nonemployee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options | $ $ 5              
Share-based Payment Arrangement, Option [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Award Vesting Period     2 years          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     203,000          
Options Granted, Weighted Average Exercise Price | $ / shares $ 0.00 $ 0.00 $ 4.30          
Share-based Compensation Arrangement by Share-based Award, Equity Instrument, Options, Grant Date Fair Value | $     306          
SharebasedCompensationArrangementbySharebasedPaymentAwardVestingMinimumSharePrice | $ / shares     $ 7.00          
Share-based Compensation Arrangement by Share-based Payment Award, Vesting, Common Stock Minimum Share Price, Trading Period | days     5          
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period     2 years          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     5 years          
Share-based Compensation Arrangement by Share-based Payment Award, Method of Measuring Cost of Award     lattice model          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]                
Expected Volatility | Rate 0.00% [1] 0.00% [1] 47.80%          
Risk-free interest rate | Rate 0.00% [1] 0.00% [1] 1.79%          
Dividend yield | Rate 0.00% [1] 0.00% [1] 0.00%          
Expected life of options (yrs) 0 years [1] 0 years [1] 5 years          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]                
Options Outstanding 298,500 306,500 103,500          
Options Outstanding, Weighted Average Exercise Price | $ / shares $ 4.55 $ 4.54 $ 5.00          
Granted 0 0 203,000          
Options Granted, Weighted Average Exercise Price | $ / shares $ 0.00 $ 0.00 $ 4.30          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares $ 0.00 $ 0.00 $ 1.51          
Exercised 0 0 0          
Options Exercised, Weighted Average Exercise Price | $ / shares $ 0.00 $ 0.00 $ 0.00          
Forfeited (132,500) (8,000) 0          
Options Forfeitured and Expired, Weighted Average Exercise Price | $ / shares $ 4.82 $ 4.17 $ 0.00          
Options Outstanding 166,000 298,500 306,500          
Options Outstanding, Weighted Average Exercise Price | $ / shares $ 4.33 $ 4.55 $ 4.54          
Options Outstanding, Weighted Average Remaining Contractual Term 2 years 4 months 25 days              
Options Exercisable 166,000 103,500 103,500          
Options Exercisable, Weighted Average Exercise Price | $ / shares $ 4.33 $ 5.00 $ 5.00          
Options Exercisable, Weighted Average Remaining Contractual Term 2 years 4 months 25 days              
Options Outstanding, Intrinsic Value | $ $ 0              
Options Exercisable, Intrinsic Value | $ 0              
Options Exercised in Period, Intrinsic Value | $ $ 0 $ 0 $ 0          
Age 60 or Older [Member] | Career Shares Award [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Award Vesting Period 2 years              
Age Eligible for Retirement | yr 60              
Under Age 60 [Member] | Career Shares Award [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested Awards, General Disclosures [Abstract]                
Award Vesting Period 5 years              
Age Eligible for Retirement | yr 60              
[1] (1) No options were granted during the years ended December 28, 2019 and December 29, 2018.