Accounts Receivable - Summary of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Receivables [Abstract]
Balance at beginning of period	$ 14,277	$ 10,889	$ 10,494	$ 10,494	$ 4,408	$ 4,408
Write-offs	(2,170)	(481)	(1,152)			(3,905)
Provision	3,034	3,869	1,547	8,450	$ 2,906	9,991
Balance at end of period	$ 15,141	$ 14,277	$ 10,889	$ 15,141		$ 10,494