Leases, Right-of-Use Assets, Lease Liability, Lease Costs and Weighted Average Term and Discount Rate (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Lease Liabilities [Abstract]
Operating lease liabilities	$ 1,237	$ 1,237
Lease Cost [Abstract]
Operating lease cost	85	255
Variable lease cost	20	64
Total lease cost	$ 105	$ 319
Remaining Lease Term and Discount Rate [Abstract]
Weighted average term (years)	6 years 1 month 28 days	6 years 1 month 28 days
Weighted average discount rate	3.14%	3.14%
Other Assets [Member]
Right of Use Assets [Abstract]
Operating lease right-of-use-assets	$ 1,237	$ 1,237
Other Liabilities [Member]
Lease Liabilities [Abstract]
Operating lease liabilities	$ 1,237	$ 1,237