Stock-Based Compensation (Tables)

9 Months Ended

Jan. 31, 2015

Share-based Compensation [Abstract]

Stock-Based Compensation Expense Allocated

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

	Three Months Ended   January 31,				Nine Months Ended   January 31,
(in thousands)	2015		2014		2015		2014
Cost of sales and distribution	$	88	$	131	$	370	$	373
Selling and marketing expenses	216		211		689		592
General and administrative expenses	469		446		1,478		1,553
Stock-based compensation expense	$	773	$	788	$	2,537	$	2,518