Stockholders Equity and Stock Option Plan (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2012
Share based compensation shares authorized under stock option plans exercise price range [Abstract]
Options Outstanding, Shares	2,791
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 7 months 6 days
Options Outstanding, Weighted Average Exercise Price	$ 1.92
Options Exercisable, Shares	1,023
Weighted Average Exercise Price	$ 2.88
Range One [Member]
Share based compensation shares authorized under stock option plans exercise price range [Abstract]
Range of Exercise Prices, Lower Range Limit	$ 1.00
Range of Exercise Prices, Upper Range Limit	$ 1.10
Options Outstanding, Shares	1,050
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 1.03
Range Two [Member]
Share based compensation shares authorized under stock option plans exercise price range [Abstract]
Range of Exercise Prices, Lower Range Limit	$ 1.86
Options Outstanding, Shares	957
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 10 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 1.86
Options Exercisable, Shares	239
Weighted Average Exercise Price	$ 1.86
Range Three [Member]
Share based compensation shares authorized under stock option plans exercise price range [Abstract]
Range of Exercise Prices, Lower Range Limit	$ 2.50
Range of Exercise Prices, Upper Range Limit	$ 2.75
Options Outstanding, Shares	569
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 2.54
Options Exercisable, Shares	569
Weighted Average Exercise Price	$ 2.54
Range Four [Member]
Share based compensation shares authorized under stock option plans exercise price range [Abstract]
Range of Exercise Prices, Lower Range Limit	$ 4.90
Options Outstanding, Shares	215
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 3 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 4.90
Options Exercisable, Shares	215
Weighted Average Exercise Price	$ 4.90