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Share-Based Payments (Tables)

12 Months Ended

Apr. 30, 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 costs were recorded as follows (in thousands):

		Year Ended April 30,
		2013			2012
General and administrative		$	1,984		$	3,009
Sales and marketing			263			240
Research and development			37			39
TOS cost of sales			20			10
POS cost of sales			72			25
Total stock-based compensation expense		$	2,376		$	3,323

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 years ended April 30, 2013 and 2012 were as follows:

		Year Ended April 30,
		2013		2012
Expected term in years		3.0 - 6.0		3.0 - 6.0
Risk-free interest rates		0.7% to 1.3%		0.4% - 2.3%
Volatility		88% - 104%		90% - 108%
Dividend yield		0%		0%

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

The Company’s stock options activity and related information as of and for the years ended April 30, 2013 and 2012 is as follows (dollars in thousands):

														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			7.6		$	-
Granted			130,000			611,250			741,250			0.41
Exercised			-			-			-			-
Canceled			-			(25,000)			(25,000)			0.62
Forfeited			-			(551,250)			(551,250)			0.72
Expired			(775,000)			(365,833)			(1,140,833)			0.95
Outstanding, April 30, 2013			765,000			13,125,205			13,890,205			0.85			7.0		$	89,000
Vested and expected to vest as of April 30,     2013			765,000			13,125,205			13,890,205						7.0		$	89,000
Exercisable as of 30-Apr-13			458,334			10,886,120			11,344,454			0.86			6.9		$	54,000

														Weighted
											Weighted			Average
					Directors						Average			Remaining			Aggregate
		Non-			and						Exercise			Contractual			Intrinsic
		Employees			Employees			Total			Price			Life (Years)			Value
Outstanding, May 1, 2011			1,610,000			12,710,948			14,320,948		$	0.88			8.4		$	1,780
Granted			115,000			1,380,000			1,495,000			0.77
Exercised			(50,000)			-			(50,000)			0.17
Forfeited			-			(348,581)			(348,581)			0.94
Expired			(265,000)			(286,329)			(551,329)			0.60
Outstanding, April 30, 2012			1,410,000			13,456,038			14,866,038			0.88			7.6		$	-
Vested and expected to vest as of April 30,     2012			1,410,000			13,456,038			14,866,038			0.88			7.6		$	-
Exercisable as of 30-Apr-12			1,241,667			6,502,163			7,743,830			0.89			6.8		$	-

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 for the years ended April 30, 2013 and 2012 is as follows (dollars in thousands):

		2013						2012
					Weighted						Weighted
					Average						Average
					Grant Date						Grant Date
		Total			Fair Value			Total			Fair Value
		Shares			Per Share			Shares			Per Share
Nonvested, beginning of period			25,000		$	0.75			100,000		$	0.90
Granted			100,000			0.30			50,000			0.75
Vested			(75,000)			0.45			(125,000)			0.87
Forfeited			-			-			-
Expired			-			-			-
Nonvested, end of period			50,000			0.30			25,000			0.75

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]

Activity related to these warrants, which expire at various dates through April 2016, is summarized as follows (dollars in thousands):

								Weighted
					Weighted			Average
		Number			Average			Remaining			Aggregate
		of			Exercise			Contractual			Intrinsic
		Shares			Price			Life (Years)			Value
Outstanding, May 1, 2012			1,416,667		$	0.50			3.8		$	-
Granted			1,860,000			0.66			4.8
Exercised			-			-
Forfeited			-			-
Expired			-			-
Outstanding, April 30, 2013			3,276,667		$	0.61			3.9		$	-

								Weighted
					Weighted			Average
		Number			Average			Remaining			Aggregate
		of			Exercise			Contractual			Intrinsic
		Shares			Price			Life (Years)			Value
Outstanding, May 1, 2011			1,912,019		$	0.73			3.7		$	524
Granted			-			-
Exercised			(495,352)			0.20						234
Forfeited			-			-
Expired			-			-
Outstanding, April 30, 2012			1,416,667		$	0.91			3.8		$	-

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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Tabular disclosure of employee stock purchase plan activity.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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