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Stockholders' Equity - Initial Public Offering (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 6 Months Ended | 21 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 22, 2014 | Apr. 09, 2014 | Dec. 31, 2013 | Jun. 30, 2014 | Jun. 30, 2014
Common Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Offering price (in dollars per share) | $ 7.00 |  |  |  |
IPO |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Proceeds from IPO | $ 74.9 |  |  |  |
Underwriters discounts and commissions | $ 5.6 |  |  |  |
Offering expenses |  |  |  |  | $ 4.2
Payment of offering costs |  |  | $ 0.8 | $ 3.4 |
IPO | Common Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares issued |  | 10,000,000 |  |  |
Offering price (in dollars per share) |  | $ 7.00 |  |  |
Shares issued to underwriters (in shares) | 1,500,000 |  |  |  |

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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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