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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data | Total | Common Stock | Treasury Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive (Loss)
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2009 | $ 898,845 | $ 1,030 |  | $ 387,496 | $ 546,355 | $ (36,036)
Beginning Balance (in shares) at Dec. 31, 2009 |  | 103,018,358 |  |  |  |
Common stock repurchases and retirements (in shares) |  | (1,665,392) |  |  |  |
Common stock repurchases and retirements | (40,851) | (17) |  | (40,834) |  |
Common stock dividends declared | (61,679) |  |  |  | (61,679) |
Restricted stock grants and cancellations (in shares) |  | 560,845 |  |  |  |
Restricted stock grants and cancellations | 513 | 6 |  | 507 |  |
Exercise of stock options (in shares) | 394,420 | 394,420 |  |  |  |
Exercise of stock options | 8,037 | 4 |  | 8,033 |  |
Share-based compensation expense | 7,006 |  |  | 7,006 |  |
Other | 40 |  |  | 40 |  |
Comprehensive income | 197,090 |  |  |  | 205,435 | (8,345)
Ending Balance at Dec. 31, 2010 | 1,009,001 | 1,023 |  | 362,248 | 690,111 | (44,381)
Ending Balance (in shares) at Dec. 31, 2010 |  | 102,308,231 |  |  |  |
Common stock repurchases and retirements (in shares) |  | (4,896,666) | (2,355) |  |  |
Common stock repurchases and retirements | (123,077) | (49) | (59) | (29,098) | (93,871) |
Common stock dividends declared | (80,307) |  |  |  | (80,307) |
Restricted stock grants and cancellations (in shares) |  | 569,724 |  |  |  |
Restricted stock grants and cancellations | 512 | 6 |  | 506 |  |
Exercise of stock options (in shares) | 343,685 | 343,685 |  |  |  |
Exercise of stock options | 7,736 | 3 |  | 7,733 |  |
Share-based compensation expense | 9,736 |  |  | 9,736 |  |
Other | 679 |  |  | 679 |  |
Comprehensive income | 104,630 |  |  |  | 158,027 | (53,397)
Ending Balance at Dec. 31, 2011 | 928,910 | 983 | (59) | 351,804 | 673,960 | (97,778)
Ending Balance (in shares) at Dec. 31, 2011 |  | 98,324,974 | (2,355) |  |  |
Common stock repurchases and retirements (in shares) |  | (1,510,014) | 2,355 |  |  |
Common stock repurchases and retirements | (45,162) | (15) | 59 | (9,282) | (35,924) |
Common stock dividends declared | (98,128) |  |  |  | (98,128) |
Restricted stock grants and cancellations (in shares) |  | 382,953 |  |  |  |
Restricted stock grants and cancellations | 1,615 | 4 |  | 1,611 |  |
Exercise of stock options (in shares) | 944,869 | 944,869 |  |  |  |
Exercise of stock options | 22,297 | 9 |  | 22,288 |  |
Share-based compensation expense | 11,687 |  |  | 11,687 |  |
Other | 686 |  |  | 686 |  |
Comprehensive income | 147,556 |  |  |  | 163,820 | (16,264)
Ending Balance at Dec. 31, 2012 | $ 969,461 | $ 981 |  | $ 378,794 | $ 703,728 | $ (114,042)
Ending Balance (in shares) at Dec. 31, 2012 |  | 98,142,782 |  |  |  |

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