CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (USD $) In Thousands, except Share data	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Stock Subscription Receivable [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Apr. 30, 2010	$ 37	$ (219)	$ 15,193	$ (12,680)	$ (750)	$ (4)	$ 1,577
Balance (in shares) at Apr. 30, 2010	35,780,000	1,064,000
Stock-based compensation	0	0	3,133	0	0	0	3,133
Exercise of options and warrants	0	0	20	0	0	0	20
Exercise of options and warrants (in shares)	104,000	0
Cancellation of stock subscription receivable	0	0	(750)	0	750	0	0
Purchase of treasury stock from board member and cancellation of accrued stock liability	0	(1,033)	188	0	0	0	(845)
Purchase of treasury stock from board member and cancellation of accrued stock liability (in shares)	(2,172,000)	2,172,000
Issuance of restricted stock	0	0	0	0	0	0	0
Issuance of restricted stock (in shares)	158,000	0
Foreign currency translation adjustment	0	0	0	0	0	(64)	(64)
Net loss	0	0	0	(3,802)		0	(3,802)
Balance at Apr. 30, 2011	37	(1,252)	17,784	(16,482)	0	(68)	19
Balance (in shares) at Apr. 30, 2011	33,870,000	3,236,000
Stock-based compensation		0	3,323	0	0	0	3,323
Exercise of options and warrants	1	0	97	0	0	0	98
Exercise of options and warrants (in shares)	534,000	0
Issuance of restricted stock	0	0	0	0	0	0	0
Issuance of restricted stock (in shares)	125,000	0
Foreign currency translation adjustment	0	0	0	0	0	(57)	(57)
Net loss	0	0	0	(8,661)	0	0	(8,661)
Balance at Apr. 30, 2012	$ 38	$ (1,252)	$ 21,204	$ (25,143)	$ 0	$ (125)	$ (5,278)
Balance (in shares) at Apr. 30, 2012	34,529,000	3,236,000