Nature of the Business and Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Change in trade and other receivables	$ (163,486)		$ (163,486)		$ (175,043)
Increase to selling, general and administrative expenses	74,936	$ 97,430	151,600	$ 179,753
Revision Of Prior Period, Error Correction, Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Change in trade and other receivables	3,400		$ 3,400
Increase to selling, general and administrative expenses	$ 3,400