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Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Jul. 15, 2017
Dec. 31, 2016
Jul. 09, 2016
Dec. 31, 2015
Financial assets, Carrying Amount        
Cash and cash equivalents, Carrying Amount $ 2,280 $ 1,013 $ 3,263 $ 1,982
Financial liabilities, Carrying Amount        
Current portion of Long-term debt, Carrying Amount 1,300 1,250 1,605  
Long-term debt, Carrying Amount 22,386 24,189 32,431  
Fair Value, Inputs, Level 1 [Member]        
Financial assets, Fair Value        
Cash and cash equivalents, Fair Value 2,280 1,013 3,263  
Financial liabilities, Fair Value        
Current portion of Long-term debt, Fair Value 0 0 0  
Long-term debt, Fair Value 0 0 0  
Fair Value, Inputs, Level 2 [Member]        
Financial assets, Fair Value        
Cash and cash equivalents, Fair Value 0 0 0  
Financial liabilities, Fair Value        
Current portion of Long-term debt, Fair Value 1,300 1,250 1,605  
Long-term debt, Fair Value 22,386 24,189 32,431  
Fair Value, Inputs, Level 3 [Member]        
Financial assets, Fair Value        
Cash and cash equivalents, Fair Value 0 0 0  
Financial liabilities, Fair Value        
Current portion of Long-term debt, Fair Value 0 0 0  
Long-term debt, Fair Value $ 0 $ 0 $ 0