XML 73 R59.htm IDEA: XBRL DOCUMENT v3.20.4
Income Taxes - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Contingency [Line Items]    
Additional tax refund $ 14.0  
Potential affect of unrecognized tax benefits on effective tax rate 2.4  
Interest accrued on unrecognized tax benefits 0.1 $ 0.1
Potential change in unrecognized tax benefits 0.2 $ 0.2
Federal    
Income Tax Contingency [Line Items]    
Net operating loss carryforwards 12.0  
State    
Income Tax Contingency [Line Items]    
Net operating loss carryforwards $ 380.0