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v3.10.0.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member]
--- | --- | --- | --- | --- | --- | ---
Balance, Amount at Dec. 31, 2015 | $ 427,948 | $ 1,262 | $ (462,167) | $ 634,626 | $ 254,860 | $ (633)
Balance, Shares at Dec. 31, 2015 |  | 126,182 | 73,228 |  |  |
Net income | 40,065 |  |  |  | 40,065 |
Other comprehensive income (loss) | 129 |  |  |  |  | 129
Share repurchases | (9,144) |  | $ (9,144) |  |  |
Share repurchases, Shares |  |  | 919 |  |  |
Restricted stock |  | $ 3 |  | (3) |  |
Restricted stock, Shares |  | 300 |  |  |  |
Stock options exercised | 8,070 | $ 11 |  | 8,059 |  |
Stock options exercised, Shares |  | 1,128 |  |  |  |
Share-based compensation | 5,725 |  |  | 5,725 |  |
Tax benefit (expense) from employee share plans | 1,004 |  |  | 1,004 |  |
Business acquisitions | 6,224 | $ 6 |  | 6,218 |  |
Business acquisitions, Shares |  | 581 |  |  |  |
Balance, Amount at Dec. 31, 2016 | 480,021 | $ 1,282 | $ (471,311) | 655,629 | 294,925 | (504)
Balance, Shares at Dec. 31, 2016 |  | 128,191 | 74,147 |  |  |
Net income | 50,377 |  |  |  | 50,377 |
Other comprehensive income (loss) | 322 |  |  |  |  | 322
Share repurchases | (19,735) |  | $ (19,735) |  |  |
Share repurchases, Shares |  |  | 1,337 |  |  |
Restricted stock |  | $ 3 |  | (3) |  |
Restricted stock, Shares |  | 292 |  |  |  |
Stock options exercised | 8,008 | $ 12 |  | 7,996 |  |
Stock options exercised, Shares |  | 1,176 |  |  |  |
Share-based compensation | 5,705 |  |  | 5,705 |  |
Business acquisitions | 6,181 | $ 4 |  | 6,177 |  |
Business acquisitions, Shares |  | 416 |  |  |  |
Balance, Amount at Dec. 31, 2017 | 530,879 | $ 1,301 | $ (491,046) | 675,504 | 345,302 | (182)
Balance, Shares at Dec. 31, 2017 |  | 130,075 | 75,484 |  |  |
Cumulative-effect adjustment (Note 1) | 2,091 |  |  |  | 2,091 |
Adjusted balance, Amount at January 1, 2018 | 532,970 | $ 1,301 | $ (491,046) | 675,504 | 347,393 | (182)
Adjusted balance, Shares at January 1, 2018 |  | 130,075 | 75,484 |  |  |
Net income | 61,570 |  |  |  | 61,570 |
Other comprehensive income (loss) | (300) |  |  |  |  | (300)
Share repurchases | (17,484) |  | $ (17,484) |  |  |
Share repurchases, Shares |  |  | 848 |  |  |
Restricted stock |  | $ 3 |  | (3) |  |
Restricted stock, Shares |  | 272 |  |  |  |
Stock options exercised | $ 6,291 | $ 8 |  | 6,283 |  |
Stock options exercised, Shares | 864 | 864 |  |  |  |
Share-based compensation | $ 6,866 |  |  | 6,866 |  |
Business acquisitions | 3,750 | $ 2 |  | 3,748 |  |
Business acquisitions, Shares |  | 193 |  |  |  |
Balance, Amount at Dec. 31, 2018 | $ 593,663 | $ 1,314 | $ (508,530) | $ 692,398 | $ 408,963 | $ (482)
Balance, Shares at Dec. 31, 2018 |  | 131,404 | 76,332 |  |  |

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