Stock-Based Compensation (Tables)

9 Months Ended

Jan. 31, 2014

Stock-Based Compensation [Abstract]

Stock-Based Compensation Expense Allocated

	Three Months Ended				Nine Months Ended
	January 31,				January 31,
(in thousands)		2014		2013		2014		2013
Cost of sales and distribution	$	131	$	159	$	373	$	467
Selling and marketing expenses		211		224		592		654
General and administrative expenses		446		504		1,553		1,527
Stock-based compensation expense	$	788	$	887	$	2,518	$	2,648