Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lease term, option to extend (up to)	10 years
Lease term, option to terminate (within)	1 year
Operating lease expense	$ 420	$ 470
Operating lease cost	350	400
Short-term lease cost	30	20
Variable lease cost	40	50
Operating lease payments	350	400
Right-of-use assets obtained in exchange for lease obligations	0	$ 3,581
Operating lease, right-of-use asset	2,910		$ 3,200
Total operating lease liabilities	$ 2,955		$ 3,230
Weighted average remaining lease term	11 years 3 months		10 years 10 months 9 days
Weighted average discount rate	3.48%		3.46%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	15 years