Stock-Based Compensation (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Pre-tax stock-based compensation expense | $ 4,949,000 | $ 4,037,000 | $ 9,823,000 | $ 7,712,000 |
| Stock Options [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Pre-tax stock-based compensation expense | 1,861,000 | 1,755,000 | 3,771,000 | 3,459,000 |
| Restricted Stock Units (RSUs) [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Pre-tax stock-based compensation expense | $ 3,088,000 | $ 2,282,000 | $ 6,052,000 | $ 4,253,000 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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