Allowance for Doubtful Accounts - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019	Jun. 30, 2020	Jan. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
One-time adjustment	$ 82,093	$ 82,093	$ 52,393	$ 83,986
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Interest income	$ 300	$ 1,300
Cumulative Impact from Adopting ASC 326 Guidance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
One-time adjustment					$ 42,236