Income Taxes Schedule of effective income tax rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	21.00%	21.00%
Computed expected tax expense	$ 2,620	$ 1,752
State taxes	32	68
Tax exempt Interest	(513)	(413)
Increase in cash surrender value of COLI	(59)	(103)
Tax credits	(857)	(684)
Equity in losses of limited partnerships	640	528
Non-deductible expenses	46	36
True-up adjustment for effect of enacted tax law changes	0	32
Other	(79)	57
Provision for income taxes	$ 1,830	$ 1,273