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Subsequent Event (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
1 Months Ended 0 Months Ended
Jan. 31, 2014
Feb. 28, 2014
Aug. 31, 2013
Apr. 10, 2014
Subsequent event
Apr. 10, 2014
Subsequent event
2010 Equity Incentive Plan
Subsequent event          
Additional number of shares authorized for issuance 2,500       2,500
Number of authorized shares of common stock   32,143 32,143 75,000  
Common stock, par value (in dollars per share)   $ 0.0000056 $ 0.0000056 $ 0.0000056