Leases - Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 148	$ 150
Net lease cost	148	150
Operating cash flows from operating leases	141	142
ROU assets obtained in exchange for new operating lease liabilities	$ 0	$ 2,765
Weighted average remaining lease term in years	6 years 6 months 26 days		6 years 9 months 4 days
Weighted average discount rate	5.48%		5.47%
Operating lease right-of-use assets	$ 2,667		$ 2,792