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Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2018 | $ 1,851,190 |  | $ 1,293,669 | $ 575,805 |  | $ (18,284)
Beginning balance, shares at Dec. 31, 2018 |  |  | 140,000 |  |  |
Repurchase of common stock | (1,535) |  | $ (1,535) |  |  |
Repurchase of common stock, shares |  |  | (70) |  |  |
Exercise of stock options | 2,212 |  | $ 2,212 |  |  |
Exercise of stock options, shares |  |  | 160 |  |  |
Shares issued pursuant to stock-based compensation plan | 3,792 |  | $ 3,792 |  |  |
Shares issued pursuant to stock-based compensation plan, shares |  |  | 67 |  |  |
Cash dividends declared on common stock | (75,692) |  |  | (75,692) |  |
Net earnings | 156,546 |  |  | 156,546 |  |
Other comprehensive income (loss) | 30,380 |  |  |  |  | 30,380
Ending balance at Sep. 30, 2019 | 1,966,893 |  | $ 1,298,138 | 656,659 |  | 12,096
Ending balance, shares at Sep. 30, 2019 |  |  | 140,157 |  |  |
Beginning balance at Jun. 30, 2019 | 1,936,677 |  | $ 1,296,885 | 631,512 |  | 8,280
Beginning balance, shares at Jun. 30, 2019 |  |  | 140,142 |  |  |
Repurchase of common stock | (723) |  | $ (723) |  |  |
Repurchase of common stock, shares |  |  | (34) |  |  |
Exercise of stock options | 155 |  | $ 155 |  |  |
Exercise of stock options, shares |  |  | 15 |  |  |
Shares issued pursuant to stock-based compensation plan | 1,821 |  | $ 1,821 |  |  |
Shares issued pursuant to stock-based compensation plan, shares |  |  | 34 |  |  |
Cash dividends declared on common stock | (25,276) |  |  | (25,276) |  |
Net earnings | 50,423 |  |  | 50,423 |  |
Other comprehensive income (loss) | 3,816 |  |  |  |  | 3,816
Ending balance at Sep. 30, 2019 | 1,966,893 |  | $ 1,298,138 | 656,659 |  | 12,096
Ending balance, shares at Sep. 30, 2019 |  |  | 140,157 |  |  |
Beginning balance at Dec. 31, 2019 | 1,994,098 |  | $ 1,298,792 | 682,692 |  | 12,614
Beginning balance, shares at Dec. 31, 2019 |  |  | 140,102 |  |  |
Cumulative adjustment upon adoption of ASU 2016-13 at Dec. 31, 2019 |  | $ (1,325) |  |  | $ (1,325) |
Repurchase of common stock | (92,687) |  | $ (92,687) |  |  |
Repurchase of common stock, shares |  |  | (5,004) |  |  |
Exercise of stock options | 168 |  | $ 168 |  |  |
Exercise of stock options, shares |  |  | 14 |  |  |
Shares issued pursuant to stock-based compensation plan | 4,373 |  | $ 4,373 |  |  |
Shares issued pursuant to stock-based compensation plan, shares |  |  | 397 |  |  |
Cash dividends declared on common stock | (73,252) |  |  | (73,252) |  |
Net earnings | 127,103 |  |  | 127,103 |  |
Other comprehensive income (loss) | 23,479 |  |  |  |  | 23,479
Ending balance at Sep. 30, 2020 | 1,981,957 |  | $ 1,210,646 | 735,218 |  | 36,093
Ending balance, shares at Sep. 30, 2020 |  |  | 135,509 |  |  |
Beginning balance at Jun. 30, 2020 | 1,959,098 |  | $ 1,209,449 | 712,145 |  | 37,504
Beginning balance, shares at Jun. 30, 2020 |  |  | 135,516 |  |  |
Repurchase of common stock | (257) |  | $ (257) |  |  |
Repurchase of common stock, shares |  |  | (15) |  |  |
Exercise of stock options | 47 |  | $ 47 |  |  |
Exercise of stock options, shares |  |  | 4 |  |  |
Shares issued pursuant to stock-based compensation plan | 1,407 |  | $ 1,407 |  |  |
Shares issued pursuant to stock-based compensation plan, shares |  |  | 4 |  |  |
Cash dividends declared on common stock | (24,419) |  |  | (24,419) |  |
Net earnings | 47,492 |  |  | 47,492 |  |
Other comprehensive income (loss) | (1,411) |  |  |  |  | (1,411)
Ending balance at Sep. 30, 2020 | $ 1,981,957 |  | $ 1,210,646 | $ 735,218 |  | $ 36,093
Ending balance, shares at Sep. 30, 2020 |  |  | 135,509 |  |  |

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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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