Share-Based Payments (Tables)

9 Months Ended

12 Months Ended

Jan. 31, 2015

Apr. 30, 2014

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

As of January 31, 2015, $158 of stock compensation is included within accrued liabilities line item on the balance sheet. Stock-based compensation expense was recognized as follows (in thousands):

	Three Months Ended				Nine Months Ended
	January 31,				January 31,
	2015		2014		2015		2014
General and administrative	$	474	$	866	$	1,530	$	1,686
Sales and marketing		114		63		447		189
Research and development		65		4		267		19
TOS cost of sales		2		2		20		12
POS cost of sales		2		6		20		62
Total stock-based compensation expense	$	657	$	941	$	2,284	$	1,968

Stock-based compensation costs were recorded as follows (in thousands):

	Year Ended April 30,
	2014		2013
General and administrative	$	2,298	$	1,984
Sales and marketing		352		263
Research and development		36		37
TOS cost of sales		56		20
POS cost of sales		65		72
Total stock-based compensation expense	$	2,807	$	2,376

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, 2015 and 2014 were as follows (in thousands):

	Three Months Ended		Nine Months Ended
	January 31,		January 31,
	2015	2014	2015	2014
Expected term in years	-	5 - 6	3 - 6	5 - 6
Risk-free interest rates	-	1.4% - 2.1%	0.79% - 1.94%	0.8% - 2.4%
Volatility	-	97% - 102%	85.8% - 102.1%	97% - 102%
Dividend yield	-	0%	0%	0%

Black-Scholes assumptions used to calculate the fair value of options granted during the years ended April 30, 2014 and 2013 were as follows:

	Year Ended April 30,
	2014		2013
Expected term in years		3.0 - 6.0		3.0 - 6.0
Risk-free interest rates		0.7% - 2.4%		0.7% - 1.3%
Volatility		84% - 102%		88% - 104%
Dividend yield		0%		0%

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

The Company’s stock options activity for the nine months ended January 31, 2015 is as follows:

						Weighted
				Weighted		Average
		Directors		Average		Remaining	Aggregate
	Non-	and		Exercise		Contractual	Intrinsic
	Employees	Employees	Total	Price		Life (Years)	Value
Outstanding, May 1, 2014	765,000	22,586,037	23,351,037	$	1.01	7.5	$	985
Granted	80,000	1,013,175	1,093,175		0.72	5.9		-
Exercised	-	(3,750)	(3,750)		0.49
Forfeited	-	(101,250)	(101,250)		0.96
Expired	(150,000)	(199,204)	(349,204)		1.04
Outstanding, January 31, 2015	695,000	23,295,008	23,990,008		1.00	6.6		63
Vested and expected to vest as of January 31, 2015	695,000	23,295,008	23,990,008		1.00	6.6		63
Exercisable as of January 31, 2015	487,500	16,544,466	17,031,966		0.91	5.8		62

The Company’s stock options activity and related information as of and for the years ended April 30, 2014 and 2013 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, 2013		765,000		13,125,205		13,890,205	$	0.85		7.0	$	89,000
Granted		-		9,793,332		9,793,332		1.23
Exercised		-		(33,750)		(33,750)		0.63
Canceled		-		-		-		-
Forfeited		-		(72,500)		(72,500)		0.82
Expired		-		(226,250)		(226,250)		0.73
Outstanding, April 30, 2014		765,000		22,586,037		23,351,037		1.01		7.5	$	985,000
Vested and expected to vest as of April 30, 2014		765,000		22,586,037		23,351,037				7.5	$	985,000
Exercisable as of April 30, 2014		522,292		13,042,285		13,564,577		0.85		6.1	$	927,000

									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 April 30, 2013		458,334		10,886,120		11,344,454		0.86		6.9	$	54,000

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 for the years ended April 30, 2014 and 2013 is as follows (dollars in thousands):

	2014				2013
			Weighted				Weighted
			Average				Average
			Grant Date				Grant Date
	Total		Fair Value		Total		Fair Value
	Shares		Per Share		Shares		Per Share
Nonvested, beginning of period		50,000	$	0.30		25,000	$	0.75
Granted		-		-		100,000		0.30
Vested		(50,000)		0.30		(75,000)		0.45
Forfeited		-		-		-
Expired		-		-		-
Nonvested, end of period		-		-		50,000		0.30

Warrant [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

Assumptions used to calculate the fair value of these warrants were as follows:

	January 31,	April 30,
	2015	2014
Expected term in years	1.2 - 3.0	1.9 - 3.7
Risk-free interest rates	0.6% - 1.05%	0.4% - 1.17%
Volatility	73% - 100%	95% - 113%
Dividend yield	0%	0%

Schedule of Share-based Compensation, Stock Options, 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, 2014	3,276,667	$	0.61	2.9	$	984
Granted	-		-	-		-
Exercised	-		-	-		-
Expired	(150,000)		-	-		-
Outstanding, January 31, 2015	3,126,667	$	0.60	2.3	$	-

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, 2013		3,276,667	$	0.61		3.9	$	-
Granted		-		-		-
Exercised		-		-
Forfeited		-		-
Expired		-		-
Outstanding, April 30, 2014		3,276,667	$	0.61		2.9	$	984,333

					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	$	-