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Note 6 - Line of Credit and Long-term Debt (Tables)
12 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
20
20
   
201
9
 
   
(in thousands)
 
Line of credit
  $
2,000
    $
2,000
 
Long-term debt
   
5,367
     
6,035
 
Long-term debt – related party
   
1,500
     
 
Less current maturities
   
(2,689
)
   
(2,663
)
Long-term debt, excluding current maturities
   
6,178
     
5,372
 
Less unamortized debt issuance costs
   
(169
)
   
(200
)
Total long-term debt, net of current maturities and unamortized debt issuance costs
  $
6,009
    $
5,172
 
Schedule of Maturities of Long-term Debt [Table Text Block]
Fiscal year ending March 31
 
(in thousands)
 
2021
  $
689
 
2022
   
2,207
 
2023
   
513
 
2024
   
285
 
2025
   
302
 
Thereafter
   
2,870
 
Total principal payments
  $
6,867