Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 1,362,928		$ 1,303,573		$ 2,560,302	$ 2,394,764
Operating Expenses	1,224,674		1,206,262		2,364,977	2,233,234
Net income	99,703	$ 25,130	61,825	$ 40,926	124,833	102,751
Receivables, net	$ 920,824		$ 890,579		$ 920,824	$ 890,579	$ 836,605
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(7,700)
Operating Expenses		(1,200)
Net income		(6,700)
Accounts Payable		(1,200)
Receivables, net		$ (7,700)