Stock-Based Compensation (Tables)

6 Months Ended

12 Months Ended

Jan. 31, 2013

Jul. 31, 2012

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Stock Options Roll Forward [Table Text Block]

The following is a summary of the common stock options granted, forfeited or expired and exercised under the Plans for the six months ended January 31, 2013:

			Weighted
			Average
			Exercise		Aggregate
			Price		Intrinsic
	Options		Share		Value
Outstanding, August 1, 2012		10,979,634	$	0.257
Granted		—		n/a
Forfeited or expired		440,778		0.736
Exercised		85,701		0.001	$	3,342
Outstanding, January 31, 2013		10,453,155	$	0.239	$	220,359
Exercisable, January 31, 2013		10,369,405	$	0.236	$	220,359

The following is a summary of the common stock options granted, forfeited or expired and exercised under the Plan:

				Weighted Average
				Exercise Price
	Options			per Share
Outstanding - August 1, 2009		5,067,138		$	0.44
Granted		2,705,000		$	0.63
Forfeited		(270,000	)	$	0.92
Expired		(36,500	)	$	0.63
Exercised		—		$	0.00
Outstanding - July 31, 2010		7,465,638		$	0.49
Granted		3,300,000		$	0.28
Forfeited or expired		(2,848,704	)	$	0.41
Exercised		(576,752	)	$	0.001
Outstanding - July 31, 2011		7,340,182		$	0.46
Granted		5,851,696		$	0.001
Forfeited or expired		(912,250	)	$	0.65
Exercised		(1,299,994	)	$	0.001
Outstanding - July 31, 2012		10,979,634		$	0.26
Exercisable - July 31, 2012		10,807,134		$	0.25

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

The following is a summary of the non-vested common stock options granted, vested and forfeited under the Plan for the six months ended January 31, 2013:

				Weighted Average
				Grant Date
	Options			Fair Value
Outstanding, August 1, 2012		172,500		$	0.46
Granted		—			0.00
Vested		(86,250	)		0.46
Forfeited		(2,500	)		0.46
Outstanding, January 31, 2013		83,750		$	0.46