Stock Based Compensation (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	May 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares	1,013
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 1 month 6 days
Options Exercisable, Shares	597
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 1.10
Options Outstanding, Shares	250
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	7 years 7 months 6 days
Options Exercisable, Shares	125
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 1.86
Options Outstanding, Shares	593
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	7 years 1 month 6 days
Options Exercisable, Shares	302
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 4.90
Options Outstanding, Shares	170
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 months
Options Exercisable, Shares	170