Stock-Based Compensation (Tables)

6 Months Ended

Oct. 31, 2015

Share-based Compensation [Abstract]

Stock-Based Compensation Expense Allocated

For the three- and six-month periods ended October 31, 2015 and 2014, stock-based compensation expense was allocated as follows: 

	Three Months Ended   October 31,				Six Months Ended   October 31,
(in thousands)	2015		2014		2015		2014
Cost of sales and distribution	$	141	$	127	$	299	$	282
Selling and marketing expenses	250		216		530		473
General and administrative expenses	441		478		966		1,009
Stock-based compensation expense	$	832	$	821	$	1,795	$	1,764