Leases - Supplemental Income Statement Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Finance Lease, Right-of-Use Asset, Amortization	$ 1,523	$ 1,234
Finance Lease, Interest Expense	184	50
Operating Lease, Cost	30,461	16,083
Variable Lease, Cost	42,772	23,470
Sublease Income	(202)	(198)
Lease, Cost	$ 74,738	$ 40,639
Operating Lease, Expense			$ 12,600