Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate with Federal and State Overall Effective Income Tax Rate from Continuing Operations (Details)

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Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate with Federal and State Overall Effective Income Tax Rate from Continuing Operations (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
U.S. statutory federal income tax rate 21.00% 21.00% 35.00%
Effective state income tax rate 4.10% 4.60% 4.58%
Valuation allowance adjustments (0.18%) 0.20% (0.59%)
Uncertain tax positions (0.45%) 0.17% 0.71%
Effect of change in future U.S. statutory federal income tax rate 0.00% 0.00% (26.27%)
Non-deductible compensation 1.48% 3.06% 0.23%
Other 1.65% 1.41% (0.74%)
Effective income tax rate 27.60% 30.44% 12.92%