Accounts Receivable - Credit Loss (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance of the allowance for credit losses	$ (3,449)
Current period provision for expected credit losses	(1,335)
Recoveries of amounts previously written off	900
Ending balance of the allowance for credit losses	$ (3,884)