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Consolidated Statements Of Shareholders' Equity (USD $) In Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Retained Earnings (Accumulated Deficit) [Member]
--- | --- | --- | --- | --- | ---
Shareholders' Equity beginning of period at Dec. 31, 2010 | $ 2,135,167 | $ 3,820 | $ 2,972,919 | $ (1,519) | $ (840,053)
Shareholders' Equity, shares beginning of period at Dec. 31, 2010 |  | 382,028 |  |  |
Stock awards, net of cancellations |  | 10 | (10) |  |
Stock awards, net of cancellations, shares |  | 1,020 |  |  |
Stock repurchases | (2,021) | (2) | (2,081) |  | (62)
Stock repurchases, shares |  | (267) |  |  |
Stock-based compensation | 14,444 | 0 | 14,444 | 0 | 0
Net income (loss) | (224,209) |  |  |  | (224,209)
Other comprehensive income (loss) | 86 |  |  | 86 |
Shareholders' Equity end of period at Sep. 30, 2011 | 1,923,467 | 3,828 | 2,985,272 | (1,433) | (1,064,200)
Shareholders' Equity, shares end of period at Sep. 30, 2011 |  | 382,781 |  |  |
Shareholders' Equity beginning of period at Dec. 31, 2011 | 1,938,615 | 3,826 | 2,986,240 | (1,306) | (1,050,145)
Shareholders' Equity, shares beginning of period at Dec. 31, 2011 |  | 382,608 |  |  |
Stock options exercised | 27,432 | 24 | 27,408 | 0 | 0
Stock option exercises, shares |  | 2,403 |  |  |
Stock awards, net of cancellations |  | 13 | (13) |  |
Stock awards, net of cancellations, shares |  | 1,316 |  |  |
Stock repurchases | (961) | (1) | (813) |  | (147)
Stock repurchases, shares |  | (104) |  |  |
Stock-based compensation | 9,384 |  | 9,384 | 0 | 0
Net income (loss) | 147,403 |  |  |  | 147,403
Other comprehensive income (loss) | 173 |  |  | 173 |
Shareholders' Equity end of period at Sep. 30, 2012 | $ 2,122,046 | $ 3,862 | $ 3,022,206 | $ (1,133) | $ (902,889)
Shareholders' Equity, shares end of period at Sep. 30, 2012 |  | 386,223 |  |  |

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