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Note 13. Commitments and Contingencies (Details) - Legal Proceedings - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Estimated Litigation Liability [Line Items]      
Accrued litigation $ 0 $ 363,000  
Litigation loss 6,000 363,000 $ 0
Class Action [Member]      
Estimated Litigation Liability [Line Items]      
Accrued litigation   350,000  
Payments for Legal Settlements 350,000    
Opt-Out Action [Member]      
Estimated Litigation Liability [Line Items]      
Accrued litigation   $ 13,000  
Payments for Legal Settlements 19,000    
Litigation loss $ 6,000