Accounts Receivable - Credit Loss (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Receivables [Abstract]
Beginning balance of the allowance for credit losses	$ (3,449)
Current period provision for expected credit losses	(1,237)
Recoveries of amounts previously written off	648
Ending balance of the allowance for credit losses	$ (4,038)