XML 135 R111.htm IDEA: XBRL DOCUMENT v3.20.4
Income Taxes - Tax Credit Carryforwards (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Domestic Tax Authority  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 0.7
State and Local Jurisdiction  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 0.8