Summary of Significant Accounting Policies - Schedule of Changes in Contractual Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Balance, beginning of year	$ 9,205	$ 6,345	$ 2,340
Add: allowance for contractual adjustments	15,518	9,095	4,664
Less: contractual adjustments	(9,290)	(6,235)	(659)
Balance, end of year	15,433	9,205	6,345
Allowance for Doubtful Accounts Receivable	$ 9,049	$ 7,296	$ 4,486	$ 1,792