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Stock Compensation Plans (Tables) | 6 Months Ended
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Jun. 30, 2020
Share-based Payment Arrangement [Abstract] |
Stock-Based Compensation Expense and Related Tax Benefits | Stock-based compensation expense and related tax benefits were as follows:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
(DOLLARS IN THOUSANDS) | 2020 |  | 2019 |  | 2020 |  | 2019
Equity-based awards | $ | 10,358 |  |  | $ | 10,696 |  |  | $ | 18,982 |  |  | $ | 18,300 |
Liability-based awards | 3,136 |  |  | 2,061 |  |  | 2,497 |  |  | 2,791 |
Total stock-based compensation expense | 13,494 |  |  | 12,757 |  |  | 21,479 |  |  | 21,091 |
Less: Tax benefit | (2,568) |  |  | (2,141) |  |  | (3,962) |  |  | (3,523) |
Total stock-based compensation expense, after tax | $ | 10,926 |  |  | $ | 10,616 |  |  | $ | 17,517 |  |  | $ | 17,568 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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