Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 2,859	$ 2,492
Amortization of right-of-use assets	216	218
Interest on lease liabilities	2	11
Total finance lease	$ 218	$ 229