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Income Taxes (Reconciliation of Effective Income Tax Rate) (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
Tax at federal statutory rate | 21.00% | 35.00% | 35.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent | 0.00% | (35.20%) | 0.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent | 0.00% | 0.00% | (2548.10%)
State income taxes, net of federal benefit | 5.90% | 2.70% | (60.80%)
Company provided benefits | 0.70% | 0.50% | 10.60%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent | (0.20%) | (0.30%) | (7.10%)
Effective Income Tax Rate Reconciliation, Company Provided Benefits | 0.10% | 0.50% | 15.20%
Effective Income Tax Rate Reconciliation, Compensation-based credits | (1.90%) | (1.00%) | (22.30%)
Other, net | 0.40% | (0.40%) | 3.70%
Effective tax rate | 26.00% | 1.80% | (2573.80%)

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