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Balance Sheet Components - Other Assets (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Jun. 30, 2013
Balance Sheet Related Disclosures [Abstract]    
Prepaid royalty license $ 1,433 $ 1,496
Restricted cash 861 847
Investment in a privately held company 750 750
Building and land deposit 1,000 0
Others 141 148
Total other assets $ 4,185 $ 3,241