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Shareholders' Equity (Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Stockholders' Equity Note [Abstract] |  |  |  |
Stock-based compensation expense | $ 6,467 | $ 5,453 | $ 20,458 | $ 15,555
Less: Deferred tax benefit | (1,229) | (1,042) | (3,932) | (2,959)
Stock-based compensation expense, net of tax | $ 5,238 | $ 4,411 | $ 16,526 | $ 12,596

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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + 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)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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