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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Comprehensive Loss [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 51,060 | $ 1,265 | $ 177,826 |  | $ (128,031)
Balance, shares at Dec. 31, 2012 |  | 126,554,000 |  |  |
Restricted stock issued, net |  | $ 10 | (10) |  |
Restricted stock issued net, shares |  | 974,000 |  |  |
Shares repurchased | (1,613) | $ (1) | (1,612) |  |
Shares repurchased, shares |  | (137,000) |  |  |
Exercise of stock options, net | $ 1,586 | $ 48 | 1,538 |  |
Exercise of stock options net, shares | 4,875,500 | 4,856,000 |  |  |
Stock-based compensation | $ 6,459 |  | 6,459 |  |
Net income | 51,537 |  |  |  | 51,537
Balance at Dec. 31, 2013 | 109,029 | $ 1,322 | 184,201 |  | (76,494)
Balance, shares at Dec. 31, 2013 |  | 132,247,000 |  |  |
Restricted stock issued, net |  | $ 6 | (6) |  |
Restricted stock issued net, shares |  | 613,000 |  |  |
Shares repurchased | (6,531) | $ (4) | (6,527) |  |
Shares repurchased, shares |  | (416,000) |  |  |
Exercise of stock options, net | $ 1,544 | $ 26 | 1,518 |  |
Exercise of stock options net, shares | 2,514,621 | 2,515,000 |  |  |
Stock-based compensation | $ 8,137 |  | 8,137 |  |
Tax benefit from stock option exercised and vested restricted shares | 21,893 |  | 21,893 |  |
Foreign currency translation adjustment | (53) |  |  | $ (53) |
Dividends | (10,785) |  |  |  | (10,785)
Net income | 61,051 |  |  |  | 61,051
Balance at Dec. 31, 2014 | $ 184,285 | $ 1,350 | 209,216 | (53) | (26,228)
Balance, shares at Dec. 31, 2014 | 133,445,000 | 134,959,000 |  |  |
Restricted stock issued, net |  | $ 9 | (9) |  |
Restricted stock issued net, shares |  | 861,000 |  |  |
Shares repurchased | $ (24,116) | $ (12) | (24,104) |  |
Shares repurchased, shares |  | (1,190,000) |  |  |
Exercise of stock options, net | $ 4,520 | $ 37 | 4,483 |  |
Exercise of stock options net, shares | 3,785,473 | 3,785,000 |  |  |
Stock-based compensation | $ 10,900 |  | 10,900 |  |
Tax benefit from stock option exercised and vested restricted shares | 57,474 |  | 57,474 |  |
Foreign currency translation adjustment | (73) |  |  | (73) |
Dividends | (78,540) |  |  |  | (78,540)
Net income | 80,052 |  |  |  | 80,052
Balance at Dec. 31, 2015 | $ 234,502 | $ 1,384 | $ 257,960 | $ (126) | $ (24,716)
Balance, shares at Dec. 31, 2015 | 136,794,000 | 138,415,000 |  |  |

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