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Common Stock and Preferred Stock - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
Class A Preferred Stock [Member]
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Dec. 31, 2011
Class A Preferred Stock [Member]
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Dec. 31, 2012
Junior Convertible Preferred Stock [Member]
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Dec. 31, 2011
Junior Convertible Preferred Stock [Member]
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Dec. 31, 2013
Junior Convertible Preferred Stock [Member]
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Jun. 21, 2013
IPO [Member]
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Dec. 31, 2012
IPO [Member]
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Jun. 21, 2013
IPO [Member]
Class A Preferred Stock [Member]
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Dec. 31, 2013
IPO [Member]
Class A Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||||||||||||
| Par value of common stock shares | $ 0.0001 | $ 0.0001 | ||||||||||
| Total authorized shares of common stock | 500,000,000 | 103,000,000 | ||||||||||
| Common Stock Shares Issued | 11,000,000 | 2,135,602 | 2,135,602 | |||||||||
| Initial Public Offering price per share | $ 17.00 | |||||||||||
| Initial public offering trading date | Jun. 21, 2013 | |||||||||||
| Number of convertible preferred stock converted into common stock | 66,235,473 | |||||||||||
| Write-Off of Deferred Equity Financing Costs | $ 5,023 | $ 5,023 | ||||||||||
| Preferred stock share authorized | 100,000,000 | |||||||||||
| Preferred stock, par value | $ 0.01 | |||||||||||
| Preferred stock share issued | 0 | |||||||||||
| Quarterly preferred return | 6.00% | |||||||||||
| Stated capital of preferred stock | $ 10,000 | |||||||||||
| Initial conversion price of preferred stock | $ 1,087 | |||||||||||
| Adjusted conversion price of preferred stock | $ 1,075 | |||||||||||
| Changes in fair value of derivative liability | (36,305) | 9,640 | 58,740 | 9,640 | 25,650 | 33,090 | (36,305) | 36,305 | ||||
| Fair value of preferred stock prior amendment | $ 10,000 | |||||||||||
| Fair value of preferred stock after amendment | $ 8 | |||||||||||