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Stock-Based Compensation Plans - Summary of SARs Activity (Detail)
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12 Months Ended | |||
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Dec. 31, 2013
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Dec. 31, 2012
SARs [Member]
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Dec. 31, 2011
SARs [Member]
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Dec. 31, 2013
SARs [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock outstanding, beginning balance, Shares | 27,983 | 31,456 | ||
| Granted | 913,915 | 750 | 6,937 | |
| Canceled | (1,866) | |||
| Repurchased | (8,544) | |||
| Stock outstanding, ending balance, Shares | 913,915 | 28,733 | 27,983 | |
| SARs vested at end of period | 22,666 | 18,944 | 28,733 | |
| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Repurchased In Period No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested No definition available.
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| X | ||||||||||
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- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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