Description of Business and Significant Accounting Policies (Tables)

6 Months Ended

Oct. 31, 2014

Accounting Policies [Abstract]

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

	Three Months ended October 31, 2014
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(1,506,961	)		2,410,512	$	(.63	)
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	$	(1,506,961	)		2,410,512	$	(.63	)

	Three Months ended October 31, 2013
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(338,192	)		1,899,227	$	(.18	)
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	$	(338,192	)		1,899,227	$	(.18	)

	Six Months ended October 31, 2014
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(2,266,728	)		2,410,512	$	(.94	)
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	$	(2,266,728	)		2,410,512	$	(.94	)

	Six Months ended October 31, 2013
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share – net loss and weighted average common shares outstanding	$	(1,219,822	)		1,826,945	$	(.67	)
Effect of dilutive securities – stock options		—			—		—
Diluted net loss per share – net loss, weighted average common shares outstanding and effect of stock options	$	(1,219,822	)		1,826,945	$	(.67	)

Summary of option activity

	Shares			Weighted average exercise price		Weighted average remaining contractual life (1)		Aggregate intrinsic value
Balance April 30, 2014		264,244		$	12.42		4.46	$	14,750
Expired		(16,000	)	$	15.42		—		—
Balance October 31, 2014		248,244		$	12.23		4.22	$	14,750
Exercisable October 31, 2014		235,744		$	12.75		3.99	$	7,375
Expected to vest October 31, 2014		224,000		$	12.23		3.99	$	7,375

(1) This amount represents the weighted average remaining contractual life of stock options in years.