SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

Apr. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activities for the years ended April 30, 2015 and 2014:

	Number of Shares		Weighted Average Exercise Price		Total Intrinsic Value		Weighted Average Remaining Contractual Life (in years)
Outstanding as of April 30, 2013		5,090	$	147.40	$	-		3.88
Employee options granted		80		78.10		-		-
Forfeited/expired		(3,253)		25.13		-		-
Outstanding as of April 30, 2014		1,917		14.76		-		3.34
Employee options granted		46,363		20.06		-		5.10
Forfeited/expired		(7,592)		25.52		-		-
Outstanding as of April 30, 2015		40,688	$	18.79	$	-		5.88
Options vested and exercisable		27,052	$	25.82	$	-		3.92

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following assumptions were used to compute the fair value of stock options granted during the years ended April 30, 2015 and 2014:

	Years Ended
	April 30,
	2015			2014
Exercise price		$4.84 - $26.40		$	78.10
Expected stock price volatility		103.0% - 131.5	%		68.6	%
Risk-free rate of interest		1.1% - 1.3	%		0.90	%
Expected term (years)		5.0			5.0

Schedule Of Common Stock Warrant Activity

The following is a summary of the common stock warrant activity for the years ended April 30, 2015 and 2014:

			Weighted		Weighted
			Average		Average
	Number of		Exercise		Remaining
	Warrants		Price		Life in years
Outstanding, April 30, 2013		103,400	$	47.39		4.5
BTX Warrants issued in connection with the BTX Purchase Agreement		68,182		110.00		4.0
Outstanding as of April 30, 2014		171,582		72.27		4.0
Warrants exchanged in connection with the Amendment		(156,072)		47.39		-
Outstanding, April 30, 2015		15,510		322.64		4.01