Note 15. Commitments and Contingencies Commitments and Contingencies (Details) - USD ($)	Jun. 09, 2015	Dec. 31, 2019
Loss Contingencies [Line Items]
Loss Contingency, Receivable		$ 15,200,000
Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		21,600,000
Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		35,300,000
Environmental and Workplace Matters [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		1,200,000
Joshua Harman, False Claims Act [Member] | Highway Products Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	$ 175,000,000.0
Loss Contingency, Judgment Entered, Value	682,400,000
Loss Contingency, Damages Awarded, Value, Trebled	525,000,000.0
Loss Contingency, Judgment Entered, Civil Penalties, Value	138,400,000
Loss Contingency, Judgment Entered, Costs and Attorney Fees, Value	$ 19,000,000.0
State, County, and Municipal Actions [Member] | Highway Products Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		0
Class Action, Shareholder [Member] | Class Action, Shareholder [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		7,500,000
Accrued Liabilities [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		$ 23,000,000.0