Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 2,231	$ 1,763	$ 7,042	$ 3,844
Finance lease cost
Amortization of ROU assets	49	157	235	465
Interest on lease liabilities	2	2	5	5
Total finance lease cost	$ 51	$ 159	$ 240	$ 470