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Stock-Based Compensation (Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Stock-Based Compensation [Abstract] |  |  |  |
Stock-based compensation | $ 23,676 | $ 21,322 | $ 41,384 | $ 40,664
Stock-based compensation, net of income taxes | 20,007 | 15,689 | 34,512 | 30,091
Total capitalized stock-based compensation included in net leasehold improvements, property and equipment on the condensed consolidated balance sheets | 309 | 155 | 622 | 343
Excess tax benefit on stock-based compensation recognized in benefit (provision) for income taxes | $ 15,708 | $ 5,264 | $ 39,339 | $ 10,698

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