Note 7 - Long-term Debt (Tables)
 12 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Debt [Table Text Block]
 
 
March 31,
201
7
 
 
March 31,
2016
 
Line of credit (2.81% at March 31, 2017)
   $
35,500
     $
27,500
  
Term loan (2.81% at March 31, 2017)
    
19,750
      
17,750
  
Less: discount
    
(450
 )    
--
  
Less: current portion
    
(1,125
 )    
(3,000
 )
Long-term portion
   $
53,675
     $
42,250
  
Schedule of Maturities of Long-term Debt [Table Text Block]
Year ending March 31,
        
2018
   $
1,125
  
2019
    
1,625
  
2020
    
2,125
  
2021
    
2,625
  
2022
    
47,750
  
    $
55,250