Other Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Receivables
Other receivables	$ 24,447	$ 23,655
Loans to customers to finance vehicle purchases
Other Receivables
Other receivables	419	394
Accrued customer billings
Other Receivables
Other receivables	4,417	6,335
Fuel tax credits
Other Receivables
Other receivables	12,684	10,556
Other receivables
Other Receivables
Other receivables	$ 6,927	$ 6,370