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Stockholders' Equity - Additional Information (Detail) (Common Stock [Member], USD $) In Millions, except Share data, unless otherwise specified | 1 Months Ended
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Mar. 26, 2014
Common Stock [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Public offering, common stock shares issued | 4,444,444
Public offering price of common stock issued | $ 22.50
Net proceeds from issuance under public offering | $ 93.8

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- Definition Amount per share or per unit assigned to the consideration received of equity securities issued for development stage entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 915 -SubTopic 215 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927 + Details
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