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Note 4 - Financing Arrangements (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
December 31,
   
December 31,
 
   
2019
   
2018
 
Term note payable - Bank of America
               
Real estate term note bearing interest at one-month LIBOR + 2.25% (4.1% and 4.8% as of December 31, 2019 and 2018, respectively) maturing June 15, 2022 with monthly payments of approximately $41,000 plus interest secured by substantially all assets.
  $
3,755
    $
4,253
 
                 
Devicix Acquistion Note 1 payable to DeLange Holdings, matured on July 1, 2019.
   
-
     
156
 
                 
Devicix Acquistion Note 2 payable to DeLange Holdings, matured on July 1, 2019.
   
-
     
203
 
     
3,755
     
4,612
 
Discount on Devicix Notes Payable
   
-
     
(23
)
Debt issuance Costs
   
(132
)    
(185
)
Total long-term debt
   
3,623
     
4,404
 
Current maturities of long-term debt
   
(444
)    
(780
)
Long-term debt - net of current maturities
  $
3,179
    $
3,624
 
Schedule of Maturities of Long-term Debt [Table Text Block]
Years Ending December 31,
 
Amount
 
2020
  $
498
 
2021
   
498
 
2022
   
2,759
 
Total
  $
3,755