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Consolidated Statements Of Redeemable Convertible Preferred Stock And Stockholders' Equity (Deficit) (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2011
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Initial Public Offering [Member]
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| Stock issuance costs | $ 2,915 |
| Issuance price of common stock | $ 19.00 |
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Secondary Offering [Member]
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| Stock issuance costs | $ 540 |
| Issuance price of common stock | $ 20.49 |