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Income Taxes Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |
Federal statutory rate | $ 12,105 | $ 7,719 | $ 8,284
Federal statutory rate (as a percent) | 35.00% | 34.00% | 34.00%
Effect of state income taxes, net of federal benefit | $ 1,618 | $ 831 | $ 1,462
Effect of state income taxes, net of federal benefit (as a percent) | 4.70% | 3.70% | 6.00%
Effect of non-deductible expenses and other, net | $ 155 | $ 583 | $ (633)
Effectof non-deductible expenses and other, net (as a percent) | 0.40% | 2.60% | (2.60%)
Change in valuation allowance | $ (141) | $ (138) | $ 132
Change in valuation allowance (as a percent) | (0.40%) | (0.60%) | 0.50%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | $ 0 | $ (1,740) | $ 0
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent | 0.00% | (7.70%) | 0.00%
Total income tax provision | $ 13,737 | $ 7,255 | $ 9,245
Income tax expense (benefit) (as a percent) | 39.70% | 32.00% | 37.90%

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