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Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2011 | $ 1,106,202 | $ 415 | $ 383,978 | $ 778,201 | $ (56,392)
Beginning Balance (in shares) at Dec. 31, 2011 | 41,484,000 | 41,484,000 |  |  |
Net income | 48,891 |  |  | 48,891 |
Other comprehensive income: |  |  |  |  |
Cumulative translation adjustment | 14,620 |  |  |  | 14,620
Issuance of common stock in connection with: |  |  |  |  |
Exercise of options, net of income tax expense from share-based awards of $270 (in shares) |  | 206,000 |  |  |
Exercise of options, net of income tax expense from share-based awards of $270 | 5,112 | 2 | 5,110 |  |
Restricted share grants, less net settled shares of 129 (in shares) |  | 423,000 |  |  |
Restricted share grants, less net settled shares of 129 | (4,881) | 4 | (4,885) |  |
Stock units issued under incentive compensation plan | 3,079 |  | 3,079 |  |
Business combinations | (3,647) |  | (3,647) |  |
Reacquisition of equity component of convertible debt | (108) |  | (108) |  |
Purchase and retirement of common stock (in shares) |  | (758,000) |  |  |
Purchase and retirement of common stock | (20,013) | (7) | (20,006) |  |
Share-based compensation | 24,465 |  | 24,465 |  |
Ending Balance at Sep. 30, 2012 | $ 1,173,720 | $ 414 | $ 387,986 | $ 827,092 | $ (41,772)
Ending Balance (in shares) at Sep. 30, 2012 | 41,355,000 | 41,355,000 |  |  |

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