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Share-based Compensation (Details 2) (USD $)
9 Months Ended
Sep. 30, 2014
Restricted Stock Awards, Number of Shares  
Restricted stock units outstanding at December 31, 2013 419,000
Granted 191,700
Vested and released (129,671)
Forfeited and cancelled 0
Restricted stock units outstanding at September 30, 2014 481,029
Restricted Stock Awards, Weighted Average Grant Date Fair Value  
Restricted stock units outstanding at December 31, 2013 $ 1.39
Granted $ 1.95
Vested and released $ 1.38
Forfeited and cancelled $ 0
Restricted stock units outstanding at September 30, 2014 $ 1.61