Leases Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Lease, Cost [Abstract]
Operating Lease, Cost	$ 2,030	$ 1,093	$ 5,842	$ 3,824
Finance Lease, Right-of-Use Asset, Amortization	473	506	1,462	1,493
Finance Lease, Interest Payment on Liability	44	66	150	195
Finance Lease, Cost	517	572	1,612	1,688
Short-term Lease, Cost	17,975	35,118	149,960	147,223
Lease, Cost	$ 20,522	$ 36,783	$ 157,414	$ 152,735