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Note F - Debt Facilities (Tables)
9 Months Ended
Jan. 31, 2019
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
(In thousands)   January 31, 2019   April 30, 2018
         
Revolving lines of credit   $
170,208
    $
151,380
 
Notes payable    
222
     
305
 
Capital lease    
916
     
1,117
 
Debt issuance costs    
(609
)    
(435
)
                 
Debt facilities   $
170,737
    $
152,367