Stock-Based Compensation (Tables)

6 Months Ended

Oct. 31, 2017

Share-based Compensation [Abstract]

Stock-Based Compensation Expense Allocated

For the three- and six-month periods ended October 31, 2017 and 2016, stock-based compensation expense was allocated as follows: 

	Three Months Ended   October 31,					Six Months Ended   October 31,
(in thousands)	2017			2016		2017		2016
Cost of sales and distribution	$	277		$	158	$	521	$	308
Selling and marketing (income) expenses	(44		)	250		202		501
General and administrative expenses	431			395		886		840
Stock-based compensation expense	$	664		$	803	$	1,609	$	1,649