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v3.3.1.900

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2012 |  | 52,960,570 |  |  |
Balance at Dec. 31, 2012 | $ 532,723 | $ 530 | $ 471,711 | $ 61,687 | $ (1,205)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Exercise of common stock options (in shares) |  | 393,183 |  |  |
Exercise of common stock options | 3,198 | $ 3 | 3,195 |  |
Employee stock purchase plan (in shares) |  | 203,200 |  |  |
Employee stock purchase plan | 3,856 | $ 2 | 3,854 |  |
Stock-based compensation expense | 13,911 |  |  |  |
Vesting of restricted stock units and restricted stock awards (in shares) |  | 369,572 |  |  |
Vesting of restricted stock units and restricted stock awards | (4,693) | $ 4 | (4,697) |  |
Tax deficiency from stock-based compensation | 5,305 |  | 5,305 |  |
Fair value adjustment of derivatives, net of income tax | 193 |  |  |  | 193
Translation adjustments | 1,128 |  |  |  | 1,128
Net income (loss) | 84,512 |  |  | 84,512 |
Balance (in shares) at Dec. 31, 2013 |  | 53,926,525 |  |  |
Balance at Dec. 31, 2013 | 640,133 | $ 539 | 493,279 | 146,199 | 116
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Exercise of common stock options (in shares) |  | 147,163 |  |  |
Exercise of common stock options | 1,105 | $ 1 | 1,104 |  |
Employee stock purchase plan (in shares) |  | 207,805 |  |  |
Employee stock purchase plan | $ 5,253 | $ 2 | 5,251 |  |
Stock repurchase and retirement (in shares) | (3,400,000) | (3,359,604) |  |  |
Stock repurchase and retirement | $ (100,048) | $ (33) | 31,194 | 68,821 |
Stock-based compensation expense | 17,246 |  |  |  |
Vesting of restricted stock units and restricted stock awards (in shares) |  | 464,804 |  |  |
Vesting of restricted stock units and restricted stock awards | (6,497) | $ 5 | (6,502) |  |
Tax deficiency from stock-based compensation | 4,718 |  | 4,718 |  |
Fair value adjustment of derivatives, net of income tax | 86 |  |  |  | 86
Translation adjustments | (4,772) |  |  |  | (4,772)
Net income (loss) | $ 77,184 |  |  | 77,184 |
Balance (in shares) at Dec. 31, 2014 | 51,386,693 | 51,386,693 |  |  |
Balance at Dec. 31, 2014 | $ 634,408 | $ 514 | 483,902 | 154,562 | (4,570)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Exercise of common stock options (in shares) | 329,502 | 329,502 |  |  |
Exercise of common stock options | $ 3,472 | $ 3 | 3,469 |  |
Employee stock purchase plan (in shares) |  | 204,401 |  |  |
Employee stock purchase plan | $ 5,293 | $ 2 | 5,291 |  |
Stock repurchase and retirement (in shares) | (43,000) | (89,174) |  |  |
Stock repurchase and retirement | $ (3,819) | $ (1) | 1,173 | 2,645 |
Stock-based compensation expense | 23,471 |  |  |  |
Vesting of restricted stock units and restricted stock awards (in shares) |  | 398,850 |  |  |
Vesting of restricted stock units and restricted stock awards | (8,823) | $ 4 | (8,827) |  |
Tax deficiency from stock-based compensation | $ 6,551 |  | 6,551 |  |
Stock Issued During Period, Shares, Acquisitions | 794,700 | 794,700 |  |  |
Stock Issued During Period, Value, Acquisitions | $ 30,183 | $ 8 | 30,175 |  |
Fair value adjustment of derivatives, net of income tax | 122 |  |  |  | 122
Translation adjustments | (3,714) |  |  |  | (3,714)
Net income (loss) | $ 97,650 |  |  | 97,650 |
Balance (in shares) at Dec. 31, 2015 | 53,024,972 | 53,024,972 |  |  |
Balance at Dec. 31, 2015 | $ 784,794 | $ 530 | $ 542,859 | $ 249,567 | $ (8,162)

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