Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 18,452	$ 17,606
Right of use assets obtained in exchange for new operating lease liabilities (non-cash)	$ 0	$ 61,693