Stock-Based Compensation (Tables)

6 Months Ended

Oct. 31, 2014

Share-based Compensation [Abstract]

Stock-Based Compensation Expense Allocated

For the three- and six-month periods ended October 31, 2014 and 2013, stock-based compensation expense was allocated as follows: 

	Three Months Ended   October 31,				Six Months Ended   October 31,
(in thousands)	2014		2013		2014		2013
Cost of sales and distribution	$	127	$	102	$	282	$	242
Selling and marketing expenses	216		162		473		381
General and administrative expenses	478		605		1,009		1,107
Stock-based compensation expense	$	821	$	869	$	1,764	$	1,730