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Note 15. Commitments and Contingencies Commitments and Contingencies (Details) - USD ($)
$ in Millions
Jun. 09, 2015
Dec. 31, 2020
Loss Contingencies [Line Items]    
Loss Contingency, Receivable   $ 5.3
Minimum [Member]    
Loss Contingencies [Line Items]    
Loss Contingency, Estimate of Possible Loss   7.0
Maximum [Member]    
Loss Contingencies [Line Items]    
Loss Contingency, Estimate of Possible Loss   14.5
Environmental and Workplace Matters [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual   1.1
Joshua Harman, False Claims Act [Member] | Highway Products Litigation [Member]    
Loss Contingencies [Line Items]    
Loss Contingency, Judgment Entered, Value $ 682.4  
State, County, and Municipal Actions [Member] | Highway Products Litigation [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual   0.0
Accrued Liabilities [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual   $ 7.5