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Income Taxes (Schedule of Income Taxes Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Income tax at federal statutory rate | $ 40,197 | $ 40,394 | $ 74,495
State income tax, net of federal income tax impact | 4,578 | 6,261 | 6,011
Domestic production deduction | 0 | 0 | (5,511)
Share-based payment compensation excess tax benefit | (1,579) | (2,914) | (7,683)
Changes in tax law (TCJA) | 0 | 612 | 13,210
Other | 1,709 | (552) | (562)
Provision for income taxes | $ 44,905 | $ 43,801 | $ 79,960

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