Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of year	$ 7,296	$ 4,486	$ 1,792
Add: provision for doubtful accounts	9,129	7,353	4,558
Less: write-offs, net of recoveries and other adjustments	(7,376)	(4,543)	(1,864)
Balance, end of year	$ 9,049	$ 7,296	$ 4,486