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v3.20.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Common Stock | Treasury Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Total
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2018 | $ 527 | $ (125,452) | $ 256,806 | $ (453) | $ 1,082,169 | $ 1,213,597
Beginning Balance, Shares at Dec. 31, 2018 | 52,690 | 4,489 |  |  |  |
Comprehensive income |  |  |  | (107) | 73,243 | 73,136
Common stock purchased for treasury |  | $ (10,000) |  |  |  | (10,000)
Common stock acquired, shares |  | 108 |  |  |  |
Restricted shares forfeited, Shares |  | 11 |  |  |  |
Share-based compensation | $ 1 | $ (8,127) | 2,635 |  |  | (5,491)
Share-based compensation, Shares | 149 | 68 |  |  |  |
Exercise of stock options | $ 1 |  | 1,630 |  |  | 1,631
Exercise of stock options, Shares | 83 |  |  |  |  |
Ending Balance at Mar. 31, 2019 | $ 529 | $ (143,579) | 261,071 | $ (560) | 1,155,412 | 1,272,873
Ending Balance, Shares at Mar. 31, 2019 | 52,922 | 4,676 |  |  |  |
Beginning Balance at Dec. 31, 2019 | $ 531 | $ (169,365) | 270,923 |  | 1,341,344 | 1,443,433
Beginning Balance, Shares at Dec. 31, 2019 | 53,054 | 4,949 |  |  |  |
Comprehensive income |  |  |  |  | 71,385 | 71,385
Common stock purchased for treasury |  | $ (60,737) |  |  |  | (60,737)
Common stock acquired, shares |  | 787 |  |  |  |
Restricted shares forfeited, Shares |  | 10 |  |  |  |
Share-based compensation | $ 1 | $ (4,969) | 2,655 |  |  | (2,313)
Share-based compensation, Shares | 164 | 62 |  |  |  |
Exercise of stock options |  |  | 72 |  |  | 72
Exercise of stock options, Shares | 3 |  |  |  |  |
Ending Balance at Mar. 31, 2020 | $ 532 | $ (235,071) | $ 273,650 |  | 1,408,897 | 1,448,008
Ending Balance, Shares at Mar. 31, 2020 | 53,221 | 5,808 |  |  |  |
Cumulative effect from the adoption of accounting pronouncements, net of taxes |  |  |  |  | $ (3,832) | $ (3,832)

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