Cash Flow (Tables)

6 Months Ended

Oct. 31, 2017

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosures of Cash Flow Information

Supplemental disclosures of cash flow information:

	Six Months Ended
	October 31,
(in thousands)	2017		2016
Cash paid during the period for:
Interest	$	217	$	288
Income taxes	$	17,461	$	11,800