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Stockholder's Equity (Details 5)	Dec. 31, 2012
Reserved shares of common stock
Reserved shares of common stock for issuance	1,412,747
Restricted Stock Units (RSUs) [Member]
Reserved shares of common stock
Reserved shares of common stock for issuance	98,575
2008 Equity incentive plan [Member]
Reserved shares of common stock
Reserved shares of common stock for issuance	1,000,000
Reserved for future grants under 2008 and 2012 Equity Incentive Plans	794,923
Stock options [Member]
Reserved shares of common stock
Reserved shares of common stock for issuance	433,028
Warrant [Member]
Reserved shares of common stock
Reserved shares of common stock for issuance	86,221

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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