Current Expected Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ (3,169)
Provision for expected credit losses	(2,102)	$ (2,017)
Write-offs	2,672
Recoveries	(265)
Ending balance	$ (2,864)