Revenue Recognition Revenue Contract Assets and Liabilities Rollforward (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Revenue Recognition and Deferred Revenue [Abstract]
Beginning balance, January 1, 2020	$ 88,215
Revenues recognized from beginning contract liability	(57,077)
Increases due to amounts collected or due	112,394
Revenues recognized from current period increases	(45,304)
Other	(999)
Ending balance, March 31, 2020	$ 97,229