Revenue Recognition Revenue Contract Assets and Liabilities Rollforward (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Revenue Recognition and Deferred Revenue [Abstract]
Beginning balance, January 1, 2020	$ 88,215
Revenues recognized from beginning contract liability	(71,859)
Increases due to amounts collected or due	181,878
Revenues recognized from current period increases	(75,447)
Other	(5,629)
Ending balance, June 30, 2020	$ 117,158