Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Treasury Stock
Beginning balance at Apr. 30, 2011	$ 95,083	$ 66	$ 185,802	$ (84,462)	$ 73	$ (6,396)
Beginning balance, shares at Apr. 30, 2011		65,711				1,200
Exercise of employee stock options, shares		100
Exercise of employee stock options	180		180
Stock-based compensation	587		587
Book deduction of stock-based compensation in excess of tax deductions	(249)		(249)
Net income	791			791
Ending balance at Jul. 31, 2011	$ 96,392	$ 66	$ 186,320	$ (83,671)	$ 73	$ (6,396)
Ending balance, shares at Jul. 31, 2011		65,811				1,200