Other Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Receivables
Other receivables	$ 81,722	$ 84,898
Loans to customers to finance vehicle purchases
Other Receivables
Other receivables	659	653
Accrued customer billings
Other Receivables
Other receivables	4,038	6,124
Fuel tax credits
Other Receivables
Other receivables	75,415	69,585
Other
Other Receivables
Other receivables	$ 1,610	$ 8,536