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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified | Total | Common Stock | Treasury Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 499,963 | $ 355 | $ (283,658) | $ 552,231 | $ (1,795) | $ 232,830
Treasury Stock, shares at Dec. 31, 2010 |  |  | (6,994) |  |  |
Common Stock, shares at Dec. 31, 2010 |  | 35,527 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 27,989 |  |  |  |  | 27,989
Total comprehensive income (loss) | (7,298) |  |  |  | (7,298) |
Proceeds from equity component of convertible notes | 43,170 |  |  | 43,170 |  |
Proceeds from sale of stock purchase warrants | 28,451 |  |  | 28,451 |  |
Purchase of option hedge on convertible notes | (42,895) |  |  | (42,895) |  |
Equity portion of convertible notes issuance costs | (1,334) |  |  | (1,334) |  |
Issuance of common stock through employee benefit plans | 376 | 2 |  | 374 |  |
Issuance of common stock through employee benefit plans, shares |  | 207 |  |  |  |
Share-based compensation | (27,679) |  |  | (27,679) |  |
Repurchse of common stock | (83,463) |  | (83,463) |  |  |
Repurchase of common stock, shares |  |  | (1,909) |  |  |
Balance at Dec. 31, 2011 | 492,638 | 357 | (367,121) | 607,676 | (9,093) | 260,819
Treasury Stock, shares at Dec. 31, 2011 |  |  | (8,903) |  |  |
Common Stock, shares at Dec. 31, 2011 |  | 35,734 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 41,204 |  |  |  |  | 41,204
Total comprehensive income (loss) | 4,296 |  |  |  | 4,296 |
Issuance of common stock through employee benefit plans | 251 | 1 |  | 250 |  |
Issuance of common stock through employee benefit plans, shares |  | 9 |  |  |  |
Share-based compensation | (20,614) | (11) |  | (20,625) |  |
Share-based compensation, shares |  | 1,109 |  |  |  |
Balance at Dec. 31, 2012 | 517,775 | 369 | (367,121) | 587,301 | (4,797) | 302,023
Treasury Stock, shares at Dec. 31, 2012 | (8,903) |  | (8,903) |  |  |
Common Stock, shares at Dec. 31, 2012 |  | 36,852 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | (21,067) |  |  |  |  | (21,067)
Total comprehensive income (loss) | 5,724 |  |  |  | 5,724 |
Issuance of common stock through employee benefit plans | 1,066 | 1 |  | 1,065 |  |
Issuance of common stock through employee benefit plans, shares |  | 165 |  |  |  |
Share-based compensation | (10,134) |  |  | (10,134) |  |
Stock Issued During Period, Shares, New Issues |  | 4,025 |  |  |  |
Stock Issued During Period, Value, New Issues | 152,458 | 40 |  | 152,418 |  |
Balance at Dec. 31, 2013 | $ 666,090 | $ 410 | $ (367,121) | $ 750,918 | $ 927 | $ 280,956
Treasury Stock, shares at Dec. 31, 2013 | (8,903) |  | (8,903) |  |  |
Common Stock, shares at Dec. 31, 2013 |  | 41,042 |  |  |  |

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