Share-Based Payments (Tables)

9 Months Ended

Jan. 31, 2013

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Stock-based compensation expense was recognized as follows (in thousands): 

	Three Months Ended					Nine Months Ended
	January 31,					January 31,
	2013		2012			2013		2012
General and administrative	$	500	$	701		$	1,619	$	2,370
Sales and marketing		56		49			199		168
Research and development		4		(8	)		33		72
TOS cost of sales		4		1			16		2
POS cost of sales		6		-			67		-
Total stock-based compensation expense	$	570	$	743		$	1,934	$	2,612

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Black-Scholes assumptions used to calculate the fair value of options granted during the three and nine months ended January 31, 2013 and 2012 were as follows:

	Three Months Ended				Nine Months Ended
	January 31,				January 31,
	2013		2012		2013		2012
Expected term in years		6.0		3.0 - 6.0		6.0		3.0 - 6.0
Risk-free interest rates		0.9% - 1.0%		0.4% - 1.9%		0.8% - 1.0%		0.4% - 2.2%
Volatility		100% - 102%		90% - 101%		99% - 102%		90% - 108%
Dividend yield		0%		0%		0%		0%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The Company’s stock option activity for the nine months ended January 31, 2013 was as follows:

												Weighted
										Weighted		Average
				Directors						Average		Remaining		Aggregate
	Non-			and						Exercise		Contractual		Intrinsic
	Employees			Employees			Total			Price		Life (Years)		Value
Outstanding, May 1, 2012		1,410,000			13,456,038			14,866,038		$	0.88		7.0	$	-
Granted		130,000			586,250			716,250			0.41
Forfeited		-			(22,500	)		(22,500	)		0.67
Expired		(500,000	)		(15,833	)		(515,833	)		0.76
Canceled		-			(25,000	)		(25,000	)		0.62
Outstanding, January 31, 2013		1,040,000			13,978,955			15,018,955			0.86		7.1		96,000
Vested and expected to vest as of January 31, 2013		1,040,000			13,978,955			15,018,955
Exercisable as of January 31, 2013		933,334			9,735,078			10,668,412			0.88		6.8		14,000

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

A summary of the activity related to restricted stock grants is as follows (in thousands):

				Weighted
				Average Grant
				Date Fair Value
	Shares			Per Share
Nonvested as of May 1, 2012		25,000		$	0.75
Granted		100,000			0.30
Vested		(50,000	)		0.53
Forfeited		-			-
Expired		-			-
Nonvested as of January 31, 2013		75,000			-