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Employee Compensation Plans - Stock Appreciation Rights (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 1,818,540
Total weighted average strike price | $ 20.30
Total weighted average remaining contractual life | 2 years 3 months 18 days
Total weighted average fair value per share | $ 7.39
January 12, 2009 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 324,200
Strike price | $ 12.74
Remaining contractual life | 11 days
Fair value per share | $ 12.04
January 19, 2010 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 267,680
Strike price | $ 30.68
Remaining contractual life | 1 year
Fair value per share | $ 1.46
January 13, 2011 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 366,050
Strike price | $ 26.35
Remaining contractual life | 2 years
Fair value per share | $ 3.02
January 19, 2012 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 406,040
Strike price | $ 18.94
Remaining contractual life | 3 years
Fair value per share | $ 8.09
January Fourteen Two Thousand Thirteen [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Number of OARs outstanding | 454,570
Strike price | $ 15.94
Remaining contractual life | 4 years
Fair value per share | $ 10.45

X
- Definition The fair value per share of each stock appreciation rights award outstanding by grant date as of the balance sheet date. + References No definition available. + Details
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X
- Definition The number of each stock appreciation rights award outstanding as of the balance sheet date. + References No definition available. + Details
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X
- Definition The remaining contractual term of the stock appreciation rights outstanding by grant date as of the balance sheet date. + References No definition available. + Details
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- Definition The strike price of each stock appreciation rights award outstanding. + References No definition available. + Details
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X
- Definition The weighted average fair value per share of the total stock appreciation rights outstanding as of the balance sheet date. + References No definition available. + Details
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- Definition The weighted average remaining contractual term of the total stock appreciation rights outstanding as of the balance sheet date. + References No definition available. + Details
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- Definition The weighted average strike price of the total stock appreciation rights outstanding as of the balance sheet date. + References No definition available. + Details
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