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Note 7 - Debt Obligations (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 08, 2023
Dec. 21, 2018
Dec. 31, 2023
Jan. 01, 2023
Jan. 02, 2022
May 06, 2020
Line of Credit, Current     $ 20,000 $ 15,000    
Property, Plant and Equipment, Net     8,948 1,398    
Notes Payable     1,400 900    
Repayments of Debt     700 $ 500 $ 400  
Long-Term Debt, Maturity, Year One     1,000      
Long-Term Debt, Maturity, Year Two     500      
Long-Term Debt, Maturity, Expected Interest Payments     100      
Long-Term Debt     $ 1,400      
Minimum [Member]            
Debt Instrument, Interest Rate, Stated Percentage     3.75% 3.75%    
Debt Instrument, Term (Year)     10 months 28 days 1 year 8 months 1 day    
Maximum [Member]            
Debt Instrument, Interest Rate, Stated Percentage     9.89% 6.75%    
Debt Instrument, Term (Year)     2 years 3 months 2 years 3 days    
Weighted Average [Member]            
Debt Instrument, Interest Rate, Stated Percentage     8.34% 5.95%    
Debt Instrument, Term (Year)     1 year 9 months 21 days 1 year 10 months 28 days    
Fixed Assets, Net Purchased Through Financing Arrangements [Member]            
Property, Plant and Equipment, Net     $ 1,400 $ 900    
Heritage Bank of Commerce [Member] | Paycheck Protection Program [Member]            
Debt Instrument, Face Amount           $ 1,200
Debt Instrument, Interest Rate, Stated Percentage           1.00%
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Month-end Outstanding Amount $ 20,000 $ 15,000        
Debt Instrument, Fee Amount     60 45    
Line of Credit, Current     $ 20,000 $ 15,000    
Debt Instrument, Interest Rate, Effective Percentage     9.00% 8.00%    
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]            
Debt Instrument, Basis Spread on Variable Rate     0.50%