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Shareholders' Equity and Stock-Based Compensation (Details 2) (USD $) | 0 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 18, 2013 | Jan. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary of common shares issued, treasury shares and shares outstanding |  |  |  |  |
Balance at the beginning of the period (in shares) |  | 48,303,707 | 48,303,707 | 51,073,000 | 50,294,000
Stock options exercised (in shares) |  |  | 8,000 | 174,000 | 154,000
Share repurchases (in shares) |  |  | (3,493,000) | (3,606,000) |
Restricted stock shares and restricted stock units (in shares) |  |  | 256,000 | 396,000 | 354,000
Other (in shares) |  |  | 206,000 | 267,000 | 271,000
Balance at the end of the period (in shares) |  |  | 45,281,329 | 48,303,707 | 51,073,000
Common Stock |  |  |  |  |
Authorized shares |  |  | 200,000,000 |  |
Par value (in dollars per share) |  |  | $ 10.00 |  |
Summary of common shares issued, treasury shares and shares outstanding |  |  |  |  |
Balance at the beginning of the period (in shares) |  | 99,454,000 | 99,454,000 | 98,702,000 | 98,068,000
Stock options exercised (in shares) |  |  | 8,000 | 174,000 | 154,000
Restricted stock shares and restricted stock units (in shares) |  |  | 133,000 | 311,000 | 209,000
Other (in shares) |  |  | 206,000 | 267,000 | 271,000
Balance at the end of the period (in shares) |  |  | 99,801,000 | 99,454,000 | 98,702,000
Common Stock In Treasury |  |  |  |  |
Summary of common shares issued, treasury shares and shares outstanding |  |  |  |  |
Balance at the beginning of the period (in shares) |  | (51,150,000) | (51,150,000) | (47,629,000) | (47,774,000)
Share repurchases (in shares) | (115,000) | (1,514,000) | (3,493,000) | (3,606,000) |
Restricted stock shares and restricted stock units (in shares) |  |  | 123,000 | 85,000 | 145,000
Balance at the end of the period (in shares) |  |  | (54,520,000) | (51,150,000) | (47,629,000)

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