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Balance Sheet Components - Additional Information (Details) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Property Plant And Equipment [Line Items]      
Depreciation and amortization $ 1,254,000 $ 846,000 [1] $ 598,000 [1]
Disposals of fixed assets 0 254,000 75,000
Fully depreciated equipment $ 19,300,000 $ 19,300,000  
[1] As adjusted, see Note 1