Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 2,755	$ 2,160
Finance lease cost:
Amortization of right-of-use assets	176	75
Interest on lease liabilities	21	20
Finance lease cost	$ 197	$ 95