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Per Share Data and Stockholders' Equity (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Dilutive effect on earnings per share |  |  |  |
Weighted Average Share Earning (Loss) | 52,597 | 52,593 | 52,591 | 52,409
Income (loss) From Continuing Operations, Amount | $ 8,717 | $ 28,998 | $ 30,415 | $ 50,143
Dilutive effect on earnings per share | 199 | (819) | (208) | (1,466)
Net income (loss), Amount | 8,916 | 28,179 | 30,207 | 48,677
Effect of participating securities: |  |  |  |
Participating securities income (loss) from continuing operations non-vested restricted stock and stock units | (71) | (452) | (237) | (777)
Participating securities net income (loss) attributable to parent non-vested restricted stock and stock units | (71) | (452) | (237) | (777)
Income (loss) from Continuing Operations Basic | 8,646 | 28,546 | 30,178 | 49,366
Income (Loss) From Continuing Operations, Basic earnings (loss), Per Share Amount | $ 0.16 | $ 0.54 | $ 0.57 | $ 0.94
Income (Loss) From Discontinued Operations, Basic earnings (loss), Amount | 199 | (819) | (208) | (1,466)
Income (Loss) From Discontinuing Operations, Basic earnings (loss), Per Share Amount | $ 0.01 | $ (0.01) |  | $ (0.03)
Net Income (Loss), Amount | 8,845 | 27,727 | 29,970 | 47,900
Net Income (Loss), Per Share Amount | $ 0.17 | $ 0.53 | $ 0.57 | $ 0.91
Effect of dilutive securities: |  |  |  |
Weighted Average Shares, Contingently convertible debt |  | 10,535 |  | 11,106
Income (Loss) From Continuing Operations, Contingently Convertible debt, Amount |  | 1,856 |  | 3,981
Income (Loss) From Discontinued Operations, Contingently Convertible debt, Amount |  | 33 |  | 80
Net Income (Loss), Contingently Convertible debt, Amount |  | 1,889 |  | 4,061
Weighted Average Share, Stock compensation plans | 345 | 378 | 346 | 448
Weighted Average Shares, Diluted earnings (loss) and shares | 52,942 | 63,506 | 52,937 | 63,963
Income (Loss) From Continuing Operations Diluted, Amount | 8,646 | 30,402 | 30,178 | 53,347
Income (Loss) From Continuing Operations Diluted, Per Share Amount | $ 0.16 | $ 0.48 | $ 0.57 | $ 0.83
Income (Loss) From Discontinued Operations Diluted, Amount | 199 | (786) | (208) | (1,386)
Income (Loss) From Discontinued Operations Diluted, Per Share Amount | $ 0.01 | $ (0.01) |  | $ (0.02)
Net Income (Loss) Diluted, Amount | $ 8,845 | $ 29,616 | $ 29,970 | $ 51,961
Net Income (Loss) Diluted, Per Share Amount | $ 0.17 | $ 0.47 | $ 0.57 | $ 0.81

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