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Shareholders' Equity and Stock Options (Details) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Summary of stock units and stock options outstanding under the Comprehensive Plan |  |  |
Stock options | 956,814 | 1,882,939 | 2,600,583
Restricted common stock units related to incentive compensation | 1,663,190 | 1,423,611 | 1,135,840
Total | 2,850,047 | 3,534,652 | 3,965,012
Employee Stock Option [Member] |  |  |
Summary of stock units and stock options outstanding under the Comprehensive Plan |  |  |
Common stock units related to deferred compensation | 111,981 | 116,174 | 115,087
Restricted Stock Units (RSUs) [Member] |  |  |
Summary of stock units and stock options outstanding under the Comprehensive Plan |  |  |
Common stock units related to deferred compensation | 118,062 | 111,928 | 113,502

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