Credit Losses - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Credit Loss [Abstract]
Accounts receivable, gross	$ 580,425
Less: allowance for returns	(3,634)
Less: allowance for credit losses	(12,009)
Accounts receivable, net	564,782	$ 720,359
Credit loss expense	$ 5,884