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Equity Compensation and Employee Benefit Plans (Equity Compensation Expense and Related Income Tax Benefit Recognized) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Stock Options |  |  |
Equity Compensation [Abstract] |  |  |
Pre-tax compensation expense | $ 0 | $ 0 | $ 6
Tax benefit | 0 | 0 | 2
Stock expense, net of tax | 0 | 0 | 4
Restricted Stock |  |  |
Equity Compensation [Abstract] |  |  |
Pre-tax compensation expense | 4,943 | 4,143 | 3,244
Tax benefit | 1,258 | 1,056 | 1,265
Stock expense, net of tax | 3,685 | 3,087 | 1,979
Performance Shares |  |  |
Equity Compensation [Abstract] |  |  |
Pre-tax compensation expense | 3,156 | 3,152 | 1,459
Tax benefit | 803 | 804 | 569
Stock expense, net of tax | $ 2,353 | $ 2,348 | $ 890

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