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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | --- | ---
BALANCE at Dec. 31, 2010 | $ 934,537 | $ 812 | $ (191) | $ 576,853 | $ (81) | $ 357,144
BALANCE, shares at Dec. 31, 2010 |  | 81,220,000 |  |  |  |
BALANCE, shares at Dec. 31, 2010 |  |  | (11,000) |  |  |
Net income (loss) | 18,573 |  |  |  |  | 18,573
Foreign currency translation gain | (5,015) |  |  |  | (5,015) |
Unrealized loss on investments | (40) |  |  |  | (40) |
Total comprehensive income (loss) | 13,518 |  |  |  |  |
Treasury stock purchased | (150,445) |  | (150,445) |  |  |
Treasury stock purchased, shares |  |  | (8,056,000) |  |  |
Share-based compensation expense: |  |  |  |  |  |
Stock option plans | 5,453 |  |  | 5,453 |  |
Restricted stock award plans | 8,978 |  |  | 8,978 |  |
Employee stock purchase plan | 400 |  |  | 400 |  |
Common stock issued under: |  |  |  |  |  |
Stock option plans | 2,069 | 2 |  | 2,067 |  |
Stock option plans, shares | 141,625 | 141,625 |  |  |  |
Restricted stock award plans | (5,639) | 4 | (5,639) | (4) |  |
Restricted stock award plans, shares |  | 425,000 | (278,000) |  |  |
Employee stock purchase plan | 2,301 | 2 |  | 2,299 |  |
Employee stock purchase plan, shares | 180,000 | 180,000 |  |  |  |
Tax effect of options exercised and stock settlements | (5,081) |  |  | (5,081) |  |
BALANCE at Dec. 31, 2011 | 806,091 | 820 | (156,275) | 590,965 | (5,136) | 375,717
BALANCE, shares at Dec. 31, 2011 |  | 81,967,000 |  |  |  |
BALANCE, shares at Dec. 31, 2011 |  |  | (8,345,000) |  |  |
Net income (loss) | (142,796) |  |  |  |  | (142,796)
Foreign currency translation gain | 503 |  |  |  | 503 |
Unrealized loss on investments | (152) |  |  |  | (152) |
Total comprehensive income (loss) | (142,445) |  |  |  |  |
Treasury stock purchased | (56,431) |  | (56,431) |  |  |
Treasury stock purchased, shares |  |  | (6,072,000) |  |  |
Share-based compensation expense: |  |  |  |  |  |
Stock option plans | 2,907 |  |  | 2,907 |  |
Restricted stock award plans | 6,637 |  |  | 6,637 |  |
Employee stock purchase plan | 143 |  |  | 143 |  |
Common stock issued under: |  |  |  |  |  |
Stock option plans, shares |  |  |  |  |  |
Restricted stock award plans | (1,282) | (6) | (1,282) | 6 |  |
Restricted stock award plans, shares |  | (557,000) | (130,000) |  |  |
Employee stock purchase plan | 1,599 | 2 |  | 1,597 |  |
Employee stock purchase plan, shares | 207,000 | 207,000 |  |  |  |
Tax effect of options exercised and stock settlements | (5,429) |  |  | (5,429) |  |
BALANCE at Dec. 31, 2012 | 611,790 | 816 | (213,988) | 596,826 | (4,785) | 232,921
BALANCE, shares at Dec. 31, 2012 | 81,616,987 | 81,616,987 |  |  |  |
BALANCE, shares at Dec. 31, 2012 | (14,547,253) |  | (14,547,253) |  |  |
Net income (loss) | (164,263) |  |  |  |  | (164,263)
Foreign currency translation gain | 4,295 |  |  |  | 4,295 |
Unrealized loss on investments | (13) |  |  |  | (13) |
Total comprehensive income (loss) | (159,981) |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |
Stock option plans | 2,308 |  |  | 2,308 |  |
Restricted stock award plans | 4,339 |  |  | 4,339 |  |
Employee stock purchase plan | 52 |  |  | 52 |  |
Common stock issued under: |  |  |  |  |  |
Stock option plans | 4 |  |  | 4 |  |
Stock option plans, shares | 1,275 | 1,275 |  |  |  |
Restricted stock award plans | (506) | (1) | (506) | 1 |  |
Restricted stock award plans, shares |  | (131,000) | (172,000) |  |  |
Employee stock purchase plan | 994 | 4 |  | 990 |  |
Employee stock purchase plan, shares | 403,000 | 403,000 |  |  |  |
Tax effect of options exercised and stock settlements | (3,616) |  |  | (3,616) |  |
BALANCE at Dec. 31, 2013 | $ 455,384 | $ 819 | $ (214,494) | $ 600,904 | $ (503) | $ 68,658
BALANCE, shares at Dec. 31, 2013 | 81,889,907 | 81,889,907 |  |  |  |
BALANCE, shares at Dec. 31, 2013 | (14,719,385) |  | (14,719,385) |  |  |

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