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Stock-Based Compensation - Additional Information (Detail) (Restricted stock units, USD $) In Millions, except Share data, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014
Restricted stock units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Restricted stock units granted in shares | 332,720
Fair value of restricted stock units | $ 16.0

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Period Type: | duration

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- Details
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- Definition Value, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP). + References No definition available. + Details
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