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v3.19.2

Consolidated Statements of Stockholders' Equity (Unaudited) - 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) Gain [Member]
--- | --- | --- | --- | --- | --- | ---
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 of accounting changes adjustment | 1,622 |  |  |  | 1,622 |
Net income | 48,957 |  |  |  | 48,957 |
Other comprehensive income | 288 |  |  |  |  | 288
Share repurchases | (4,409) |  | $ (4,409) |  |  |
Share repurchases, Shares |  |  | 219 |  |  |
Restricted stock |  | $ 4 |  | (4) |  |
Restricted stock, Shares |  | 272 |  |  |  |
Stock options exercised | 4,425 | $ 5 |  | 4,420 |  |
Stock options exercised, Shares |  | 616 |  |  |  |
Share-based compensation | 3,850 |  |  | 3,850 |  |
Business acquisitions | 3,214 | $ 1 |  | 3,213 |  |
Business acquisitions, Shares |  | 169 |  |  |  |
Balance, Amount at Jun. 30, 2018 | 588,826 | $ 1,311 | $ (495,455) | 686,983 | 395,881 | 106
Balance, Shares at Jun. 30, 2018 |  | 131,132 | 75,703 |  |  |
Balance, Amount at Mar. 31, 2018 | 571,616 | $ 1,305 | $ (491,604) | 679,208 | 382,775 | (68)
Balance, Shares at Mar. 31, 2018 |  | 130,470 | 75,515 |  |  |
Net income | 13,106 |  |  |  | 13,106 |
Other comprehensive income | 174 |  |  |  |  | 174
Share repurchases | (3,851) |  | $ (3,851) |  |  |
Share repurchases, Shares |  |  | 188 |  |  |
Restricted stock |  | $ 4 |  | (4) |  |
Restricted stock, Shares |  | 216 |  |  |  |
Stock options exercised | 2,154 | $ 1 |  | 2,153 |  |
Stock options exercised, Shares |  | 277 |  |  |  |
Share-based compensation | 2,413 |  |  | 2,413 |  |
Business acquisitions | 3,214 | $ 1 |  | 3,213 |  |
Business acquisitions, Shares |  | 169 |  |  |  |
Balance, Amount at Jun. 30, 2018 | 588,826 | $ 1,311 | $ (495,455) | 686,983 | 395,881 | 106
Balance, Shares at Jun. 30, 2018 |  | 131,132 | 75,703 |  |  |
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 |  |  |
Cumulative-effect of accounting changes adjustment |  |  |  |  | (101) | 101
Net income | 54,061 |  |  |  | 54,061 |
Other comprehensive income | (341) |  |  |  |  | (341)
Share repurchases | (21,732) |  | $ (21,732) |  |  |
Share repurchases, Shares |  |  | 1,096 |  |  |
Restricted stock |  | $ 2 |  | (2) |  |
Restricted stock, Shares |  | 228 |  |  |  |
Stock options exercised | $ 3,043 | $ 4 |  | 3,039 |  |
Stock options exercised, Shares | 378 | 378 |  |  |  |
Share-based compensation | $ 3,399 |  |  | 3,399 |  |
Business acquisitions | 1,967 | $ 1 |  | 1,966 |  |
Business acquisitions, Shares |  | 98 |  |  |  |
Balance, Amount at Jun. 30, 2019 | 634,060 | $ 1,321 | $ (530,262) | 700,800 | 462,923 | (722)
Balance, Shares at Jun. 30, 2019 |  | 132,108 | 77,428 |  |  |
Balance, Amount at Mar. 31, 2019 | 623,487 | $ 1,318 | $ (520,088) | 696,226 | 446,331 | (300)
Balance, Shares at Mar. 31, 2019 |  | 131,813 | 76,912 |  |  |
Net income | 16,592 |  |  |  | 16,592 |
Other comprehensive income | (422) |  |  |  |  | (422)
Share repurchases | (10,174) |  | $ (10,174) |  |  |
Share repurchases, Shares |  |  | 516 |  |  |
Restricted stock |  | $ 1 |  | (1) |  |
Restricted stock, Shares |  | 55 |  |  |  |
Stock options exercised | 1,643 | $ 2 |  | 1,641 |  |
Stock options exercised, Shares |  | 189 |  |  |  |
Share-based compensation | 1,917 |  |  | 1,917 |  |
Business acquisitions | 1,017 |  |  | 1,017 |  |
Business acquisitions, Shares |  | 51 |  |  |  |
Balance, Amount at Jun. 30, 2019 | $ 634,060 | $ 1,321 | $ (530,262) | $ 700,800 | $ 462,923 | $ (722)
Balance, Shares at Jun. 30, 2019 |  | 132,108 | 77,428 |  |  |

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