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	$ 1,189	$ 1,128	$ 3,578	$ 3,197
Short-term lease cost	471	43	808	292
Total lease cost	$ 1,660	$ 1,171	$ 4,386	$ 3,489