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Debt, Covenants (Details) - Line of Credit
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Credit Agreement, covenant compliance, actual leverage ratio   2.3
Credit Agreement, covenant terms, maximum leverage ratio   4.5
Credit Agreement, covenant compliance, actual interest coverage ratio   9.6
Credit Agreement, covenant terms, minimum interest coverage ratio   3.5
Scenario, Forecast    
Debt Instrument [Line Items]    
Credit Agreement, covenant terms, maximum leverage ratio 4.0