Accounts Receivables - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,822	$ 1,880
Charges to income from operations	3,510	10,354
Collections from customers previously reserved and other	(3,064)	(8,538)
Ending balance	$ 2,268	$ 3,696