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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Mar. 31, 2018
Notes Tables  
Summary of Valuation Allowance [Table Text Block]
   
Balance at
Beginning
of Period
    
Increase
(decrease) to
Costs and
Expenses
    
Write
Offs
    
Reversal
Benefit to
Revenue
    
Balance
at End of
Period
  
Allowance for doubtful accounts (in $000’s)
:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
                                         
Fiscal year ended March 31, 2018
   $
114
     $
225
     $
(93
)
   $
(31
)
   $
215
  
Fiscal year ended March 31, 2017
   $
407
     $
84
     $
(335
)
   $
(42
)
   $
114