Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 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	$ 140	$ 170
Operating lease cost	110	140
Short-term lease cost	10	10
Variable lease cost	20	20
Operating lease payments	120	140
Right-of-use assets obtained in exchange for lease obligations	0	$ 3,581
Operating lease, right-of-use asset	3,110		$ 3,200
Total operating lease liabilities	$ 3,137		$ 3,230
Weighted average remaining lease term	10 years 11 months 23 days		10 years 10 months 9 days
Weighted average discount rate	3.46%		3.46%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	16 years