Balance Sheet Components (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended
	May 31, 2013	May 31, 2013	Aug. 31, 2012	May 31, 2013 Ning Xiang	May 31, 2013 Patents and trademarks	Aug. 31, 2012 Patents and trademarks	May 31, 2013 Acquired technology	Aug. 31, 2012 Acquired technology	May 31, 2013 Customer relationships	Aug. 31, 2012 Customer relationships	May 31, 2013 Customer relationships Ning Xiang
Intangible Assets
Weighted Average Amortization Period					16 years	17 years	4 years	4 years	5 years	5 years
Gross Carrying Amount	$ 2,372	$ 2,372	$ 2,089		$ 868	$ 585	$ 167	$ 167	$ 1,337	$ 1,337
Accumulated Amortization and Impairment	1,667	1,667	537		198	146	132	101	1,337	290
Total	705	705	1,552		670	439	35	66		1,047
Impairment of Long-Lived Assets
Impairment charge of finite lived asset	851	851									851
Goodwill
Implied fair value of goodwill			1,072	0
Goodwill impairment loss	$ 1,077	$ 1,077		$ 1,077