Note 9. Income Taxes Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	2.20%	2.30%	(1.90%)
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent	1.20%	2.90%	0.00%
Effective Tax Rate Reconciliation, Executive Compensation Limitations	1.20%	0.90%	0.00%
Effective Tax Rate Reconciliation, Interest Expense Limitations	1.00%	1.30%	0.00%
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	0.10%	(0.50%)	(2.00%)
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Percent	(0.80%)	(1.40%)	0.80%
Effective Tax Rate Reconciliation, Changes in Laws and Apportionment	4.30%	5.20%	(0.50%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	(3.90%)	(243.70%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Percent	0.00%	0.00%	(2.10%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	0.00%	1.60%	1.90%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	0.40%	(1.30%)	0.30%
Effective Income Tax Rate Reconciliation, Percent	30.60%	28.10%	(212.20%)