Other Current Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Current Accounts Receivable
Insurance claims receivable	$ 57,021	$ 1,100
Accident loss receivables	1,448	624
Other current receivables	1,023	956
Total other current accounts receivable	$ 59,492	$ 2,680