Stock-Based Compensation Plans - Summary of Stock Option Activity - Pre-IPO (Detail) - Prior to IPO Stock Options [Member] |
12 Months Ended |
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Dec. 31, 2013
$ / shares
shares
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Shares Under Options, beginning of year | shares | 750 |
| Shares Under Options, Granted | shares | 0 |
| Shares Under Options, Exercised | shares | (750) |
| Weighted-Average Exercise Price, beginning of year | $ / shares | $ 28.86 |
| Weighted-Average Exercise Price, Granted | $ / shares | 0 |
| Weighted-Average Exercise Price, Exercised | $ / shares | $ 28.86 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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