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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Income | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2009 | $ 2,081,700 | $ 1,808 | $ 781,635 | $ 1,901,853 | $ 14,996 | $ (618,592)
Beginning Balance (in shares) at Dec. 31, 2009 |  | 180,829,000 |  |  |  |
Comprehensive income: |  |  |  |  |  |
Net income | 63,088 |  |  | 63,088 |  |
Foreign currency translation adjustment, net of tax of $0 in 2011 and $2,814 in 2010 | 4,650 |  |  |  | 4,650 |
Total comprehensive income | 67,738 |  |  | 63,088 | 4,650 |
Issuance of restricted stock (in shares) |  | 646,000 |  |  |  |
Issuance of restricted stock |  | 6 | (6) |  |  |
Vesting of stock unit awards (in shares) |  | 7,000 |  |  |  |
Forfeitures of restricted stock (in shares) |  | (54,000) |  |  |  |
Exercise of stock options (in shares) |  | 34,000 |  |  |  |
Exercise of stock options | 290 |  | 290 |  |  |
Stock-based compensation | 11,881 |  | 11,881 |  |  |
Tax expense related to stock-based compensation | (2,535) |  | (2,535) |  |  |
Payment of cash dividends | (23,087) |  |  | (23,087) |  |
Purchases of treasury stock | (1,848) |  |  |  |  | (1,848)
Ending Balance at Sep. 30, 2010 | 2,134,139 | 1,814 | 791,265 | 1,941,854 | 19,646 | (620,440)
Ending Balance (in shares) at Sep. 30, 2010 |  | 181,462,000 |  |  |  |
Beginning Balance at Dec. 31, 2010 | 2,187,607 | 1,815 | 796,641 | 1,987,999 | 21,597 | (620,445)
Beginning Balance (in shares) at Dec. 31, 2010 | 181,537,568 | 181,538,000 |  |  |  |
Comprehensive income: |  |  |  |  |  |
Net income | 234,818 |  |  | 234,818 |  |
Foreign currency translation adjustment, net of tax of $0 in 2011 and $2,814 in 2010 | (3,460) |  |  |  | (3,460) |
Total comprehensive income | 231,358 |  |  | 234,818 | (3,460) |
Issuance of restricted stock (in shares) |  | 767,000 |  |  |  |
Issuance of restricted stock |  | 8 | (8) |  |  |
Vesting of stock unit awards (in shares) |  | 10,000 |  |  |  |
Forfeitures of restricted stock (in shares) |  | (44,000) |  |  |  |
Exercise of stock options (in shares) | 838,307 | 838,000 |  |  |  |
Exercise of stock options | 14,040 | 8 | 14,032 |  |  |
Stock-based compensation | 15,366 |  | 15,366 |  |  |
Tax benefit related to stock-based compensation | 5,838 |  | 5,838 |  |  |
Payment of cash dividends | (23,257) |  |  | (23,257) |  |
Purchases of treasury stock | (4,219) |  |  |  |  | (4,219)
Ending Balance at Sep. 30, 2011 | $ 2,426,733 | $ 1,831 | $ 831,869 | $ 2,199,560 | $ 18,137 | $ (624,664)
Ending Balance (in shares) at Sep. 30, 2011 | 183,108,650 | 183,109,000 |  |  |  |

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