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Note 6 - Long-term Debt (Tables)
9 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Debt [Table Text Block]
   
December 31,
2018
   
March 31,
2018
 
Line of credit (3.813%, as of December 31, 2018)
  $
12,000
    $
28,000
 
Term loan (3.875% as of December 31, 2018)
   
17,500
     
18,625
 
Less: discount
   
(287
)    
(365
)
Less: current portion
   
(2,000
)    
(1,625
)
Long-term portion
  $
27,213
    $
44,635
 
Schedule of Maturities of Long-term Debt [Table Text Block]
For the year ending March 31,
 
 
 
 
2019
  $
500
 
2020
   
2,125
 
2021
   
2,625
 
2022
   
24,250
 
Total
  $
29,500