Summary of Significant Accounting Policies - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Right-of-use assets obtained in exchange for new lease liabilities: Finance leases	$ 82	$ 822	$ 14,006	$ 10,843
Right-of-use assets obtained in exchange for new lease liabilities: Operating leases	$ (9,162)	$ (7,053)	$ (44,559)	$ (1,885)