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Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)
In Millions, except Share data, unless otherwise specified |
1 Months Ended | |
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May 17, 2013
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Apr. 23, 2013
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Subsequent Event [Member]
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| Subsequent Event [Line Items] | ||
| Sale of common shares | 13,333,333 | |
| Sale of common stock price per share | $ 12.50 | |
| Net proceeds from offerings | $ 9.5 | $ 155.4 |
| Purchase of additional stock of common shares | 818,356 | |
| X | ||||||||||
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- Definition
Additional Shares Purchased By Underwriters To Exercise Over Allotment Option No definition available.
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| X | ||||||||||
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- Definition
Common Stock Initial Public Offering Shares Issued No definition available.
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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