Summary of Significant Accounting Policies (Tables)

3 Months Ended

Jan. 31, 2013

Accounting Policies [Abstract]

Reconciliation of the numerator and denominator used in computing basic and diluted net loss per share

	Three Months ended January 31, 2013
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(781,663	)		1,782,925	$	(.44	)
Effect of dilutive securities – stock options		—			—		—
Effect of dilutive securities – warrants		—			—		—
Diluted net loss per share – net loss, weighted average common shares outstanding and effect of stock options and warrants	$	(781,663	)		1,782,925	$	(.44	)

	Three Months ended January 31, 2012
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(4,182,611	)		1,783,885	$	(2.34	)
Effect of dilutive securities – stock options		—			—		—
Effect of dilutive securities – warrants		—			—		—
Diluted net loss per share – net loss, weighted average common shares outstanding and effect of stock options and warrants	$	(4,182,611	)		1,783,885	$	(2.34	)

	Nine Months ended January 31, 2013
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(3,005,137	)		1,784,898	$	(1.68	)
Effect of dilutive securities – stock options		—			—		—
Effect of dilutive securities – warrants		—			—		—
Diluted net loss per share – net loss, weighted average common shares outstanding and effect of stock options and warrants	$	(3,005,137	)		1,784,898	$	(1.68	)

	Nine Months ended January 31, 2012
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(6,215,443	)		1,766,735	$	(3.52	)
Effect of dilutive securities – stock options		—			—		—
Diluted net loss per share – net loss, weighted average common shares outstanding and effect of stock options	$	(6,215,443	)		1,766,735	$	(3.52	)

Summary of option activity

	Shares			Weighted average exercise price		Weighted average remaining contractual life (1)		Aggregate intrinsic value (2)
Balance April 30, 2012		290,983		$	14.04		5.29		—
Granted		16,667		$	4.14		—		—
Exercised		—			—		—		—
Expired		(21,075	)	$	16.65		—		—
Balance January 31, 2013		286,575		$	13.27		4.84		—
Exercisable January 31, 2013		257,325		$	14.10		4.91		—
Expected to vest January 31, 2013		272,167		$	13.27		4.84		—