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Note 5 - Accounts Receivable
3 Months Ended
Jun. 30, 2016
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
5. Accounts Receivable
 
Accounts receivable consist of the following (in thousands):
 
 
 
June 30,
 
 
March 31,
 
 
 
2016
 
 
2016
 
 
 
(unaudited)
 
Accounts receivable, gross
  $ 43,751     $ 41,219  
Allowances
    (2,688 )     (2,779 )
Accounts receivable, net
  $ 41,063     $ 38,440