Leases - Components of Lease Expense and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease expense	$ 570	$ 653
Short-term lease expense	32	43
Interest on lease liabilities	4
Total lease expense	606	696
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	584	582
Operating cash flows from finance leases	3	0
Financing cash flows from finance leases	$ (51)	$ 0