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Public Offering (Details Textual) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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May 18, 2011
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| Over Allotment Option Number Of Shares | 1,497,500 | ||
| Common Stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 | $ 0.0001 |
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 1 | ||
| Class of Warrant or Right, Exercise Price of Warrants or Rights | 11.5 | ||
| Class Of Warrant Or Right Expiration Period | 5 years | ||
| Class Of Warrant Or Right Redeemable Price | $ 0.01 | ||
| Class Of Warrant Or Right Redeemable Notice Period | 30 days | ||
| Sales Price Per Common Share | $ 17.5 | ||
| Underwriting Discount Percentage | 2.00% | ||
| Commited Underwriting Additional Fee Percentage | 3.50% | ||
| Deferred Compensation Share-based Arrangements, Liability, Current | $ 6,647,375 | ||
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Common Stock Subject To Mandatory Redemption [Member]
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| Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Number of Shares | 18,992,500 | 18,992,500 | |
| Share Price | $ 10 |
| X | ||||||||||
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- Definition
The period in which an warrant or right to purchase entity common stock is valid. No definition available.
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- Definition
This item represent the number of days notice required to give by holder of warrant to exercise his option to redeemed warrant. No definition available.
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| X | ||||||||||
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- Definition
The price at which class of warrant or right redeemed at the option of holder of warrant. No definition available.
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| X | ||||||||||
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- Definition
No authoritative reference available. No definition available.
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| X | ||||||||||
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- Definition
The number of share issued under an option, commonly available to underwriters, that allows the sale of additional shares that a company plans to issue in an initial public offering or secondary/follow-on offering known as Green shoes option. No definition available.
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- Definition
The last sales price of common share in a recognized stock exchange. No definition available.
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- Definition
Percentage of discount give to underwriters. Underwriters Discount is the differential between the price paid to the issuer for the new issue and the prices at which the securities are initially offered to the investing public. No definition available.
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| X | ||||||||||
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- Definition
The exercise price of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Price of a single share of a number of saleable stocks of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of shares that would be issued, determined under the conditions specified in the contract, if the settlement were to occur at the reporting date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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