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v3.10.0.1

Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings (Deficit) [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2015 | $ 116,462 | $ 696 | $ 116,598 | $ 119,395 | $ (120,227)
Beginning Balance, Shares at Dec. 31, 2015 |  | 61,809,060 |  |  | 7,829,458
Net income | 67,847 |  |  | 67,847 |
Employee stock purchase and option plans | 281 | $ 2 | 279 |  |
Employee stock purchase and option plans, Shares |  | 158,350 |  |  |
Shares withheld for taxes on share-based payment awards | (1,934) | $ (2) | (1,932) |  |
Shares withheld for taxes on share-based payment awards, Shares |  | (26,386) |  |  |
Stock-based compensation | 4,790 | $ 2 | 4,788 |  |
Stock-based compensation, Shares |  | 17,984 |  |  |
Shares repurchased under our publicly announced share repurchase programs | (53,285) |  |  |  | $ (53,285)
Shares repurchased under our publicly announced share repurchase programs, Shares |  | (3,157,904) |  |  | 3,157,904
Ending Balance at Dec. 31, 2016 | 134,161 | $ 698 | 119,733 | 187,242 | $ (173,512)
Ending Balance, Shares at Dec. 31, 2016 |  | 58,801,104 |  |  | 10,987,362
Net income | 95,128 |  |  | 95,128 |
Employee stock purchase and option plans | 393 | $ 2 | 391 |  |
Employee stock purchase and option plans, Shares |  | 33,228 |  |  |
Shares withheld for taxes on share-based payment awards | (3,619) | $ (2) | (3,617) |  |
Shares withheld for taxes on share-based payment awards, Shares |  | (58,470) |  |  |
Stock-based compensation | 5,187 |  | 5,187 |  |
Stock-based compensation, Shares |  | 80,998 |  |  |
Ending Balance at Dec. 31, 2017 | 231,250 | $ 698 | 121,694 | 282,370 | $ (173,512)
Ending Balance, Shares at Dec. 31, 2017 |  | 58,856,860 |  |  | 10,987,362
Net income | 134,572 |  |  | 134,572 |
Employee stock purchase and option plans | 882 | $ 1 | 881 |  |
Employee stock purchase and option plans, Shares |  | 63,448 |  |  |
Shares withheld for taxes on share-based payment awards | (4,695) |  | (4,695) |  |
Shares withheld for taxes on share-based payment awards, Shares |  | (13,028) |  |  |
Stock-based compensation | 6,345 | $ 1 | 6,344 |  |
Stock-based compensation, Shares |  | 103,694 |  |  |
Shares repurchased under our publicly announced share repurchase programs | (25,391) |  |  |  | $ (25,391)
Shares repurchased under our publicly announced share repurchase programs, Shares |  | (459,321) |  |  | 459,321
Ending Balance at Dec. 31, 2018 | $ 342,963 | $ 700 | $ 124,224 | $ 416,942 | $ (198,903)
Ending Balance, Shares at Dec. 31, 2018 |  | 58,551,653 |  |  | 11,446,683

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