Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Finance lease cost:
Amortization of right-of-use asset	$ 45	$ 45
Interest expense on lease liability	33	34
Total finance lease cost	78	79
Operating lease cost	516	528
Short-term and equipment lease cost	10	9
Sublease income	(9)	(6)
Total lease costs	$ 595	$ 610