Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

v3.20.4
Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Tax Credit Carryforward [Line Items]    
Coronavirus Aid, Relief, and Economic Security Act, NOL Carryback, Income Tax Benefit $ 13.0  
Other Receivables [Member]    
Tax Credit Carryforward [Line Items]    
Income Taxes Receivable 32.7  
State and Local Jurisdiction    
Tax Credit Carryforward [Line Items]    
Operating loss carryforwards, valuation allowance $ 4.8 $ 4.2