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Cash Flow (Tables)
 6 Months Ended
Oct. 31, 2016
Supplemental Cash Flow Information [Abstract]  
Supplemental Disclosures of Cash Flow Information
Supplemental disclosures of cash flow information:
 

Six Months Ended
 

October 31,
(in thousands)

2016

2015
Cash paid during the period for:

 

 
Interest

$
288


$
241

Income taxes

$
11,800


$
15,563