Accounts Receivables - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,822	$ 1,880
Charges to income from operations	923	1,752
Collections from customers previously reserved and other	(1,091)	(451)
Ending balance	$ 1,654	$ 3,181