Allowance for Doubtful Accounts - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
One-time adjustment	$ 67,801	$ 52,393
Interest income	1,700
Bad debt provision	$ 9,636	25,480	$ 51,387
Cumulative Impact from Adopting ASC 326 Guidance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
One-time adjustment		$ 42,236		$ 42,200