6. Fair Value (Details 2) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Impaired Loans	$ 9,601	$ 4,351
Fair Value Inputs Level 3 [Member]
Impaired Loans	9,601	4,351
Other Real Estate Owned	$ 2,063	$ 1,984
Valuation Technique Impaired Loans	Discounted appraised value	Discounted appraised value
Valuation Technique Other Real Estate Owned	Discounted appraised value	Discounted appraised value
Significant Unobservable Inputs Impaired Loans	Discount for selling costs and marketability	Discount for selling costs and marketability
Significant Unobservable Inputs Other Real Estate Owned	Discount for selling costs	Discount for selling costs
Average Impaired Loans	4.90%	5.50%
Average Other Real Estate Owned	4.00%	8.00%
Fair Value Inputs Level 3 [Member] | Minimum [Member]
Range Impaired Loans	2.00%	3.00%
Range Other Real Estate Owned	2.50%	5.00%
Fair Value Inputs Level 3 [Member] | Maximum [Member]
Range Impaired Loans	19.00%	19.00%
Range Other Real Estate Owned	10.00%	15.00%