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CONDENSED CONSOLIDATED STOCKHOLDERS' EQUITY STATEMENT (USD $) In Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Component [Member] | Accumulated Other Comprehensive Income (Loss), Pension and Postretirement Benefit Plans [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2012 | $ 811,860 | $ 503 | $ 598,180 | $ 461,756 | $ (218,014) | $ 28,516 | $ (59,081)
Beginning balance, shares at Dec. 31, 2012 |  | 50,335 |  |  | (6,167) |  |
Net income | 51,737 |  |  | 51,737 |  |  |
Foreign currency translation | (15,269) |  |  |  |  | (15,269) |
Amortization of pension and other postretirement benefit plan losses, net of $1.5 million tax | 2,374 |  |  |  |  |  | 2,374
Exercise of stock options, net of tax withholding, shares |  |  |  |  | 490 |  |
Exercise of stock options, net of tax withholding | 1,649 |  | (16,867) |  | 18,516 |  |
Conversion of restricted stock units into common stock, net of tax withholding, shares |  |  |  |  | 120 |  |
Conversion of restricted stock units into common stock, net of tax withholding | (2,815) |  | (7,012) |  | 4,197 |  |
Share repurchase program | (62,500) |  |  |  | (62,500) |  |
Share repurchase program, shares |  |  |  |  | (1,197) |  |
Share-based compensation | 12,728 |  | 12,728 |  |  |  |
Dividends ($0.10 per share) | (4,452) |  |  | (4,452) |  |  |
Ending balance at Jun. 30, 2013 | $ 795,312 | $ 503 | $ 587,029 | $ 509,041 | $ (257,801) | $ 13,247 | $ (56,707)
Ending balance, shares at Jun. 30, 2013 |  | 50,335 |  |  | (6,754) |  |

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