Loans Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Recorded Investment:
With No Related Allowance	$ 689	$ 1,825	$ 689	$ 1,825	$ 2,929
With a Related Allowance	35	1,622	35	1,622	294
Unpaid Principal Balance:
With No Related Allowance	688	1,847	688	1,847	2,928
With a Related Allowance	36	1,576	36	1,576	293
Average Recorded Balance:
With No Related Allowance	1,609	1,482	1,810	1,482
With a Related Allowance	36	1,622	165	1,622
Interest Income Recognized:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Cash Basis Income:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Commercial
Recorded Investment:
With No Related Allowance	0	0	0	0	430
With a Related Allowance	35	475	35	475	0
Unpaid Principal Balance:
With No Related Allowance	0	0	0	0	429
With a Related Allowance	36	489	36	489	0
Average Recorded Balance:
With No Related Allowance	0	0	215	0
With a Related Allowance	36	478	18	478
Interest Income Recognized:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Cash Basis Income:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Commercial Real Estate Portfolio Segment
Recorded Investment:
With No Related Allowance	0	5	0	5	793
With a Related Allowance	0	801	0	801	0
Unpaid Principal Balance:
With No Related Allowance	0	5	0	5	793
With a Related Allowance	0	807	0	807	0
Average Recorded Balance:
With No Related Allowance	1	7	397	7
With a Related Allowance	0	794	0	794
Interest Income Recognized:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Cash Basis Income:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Consumer Portfolio Segment
Recorded Investment:
With No Related Allowance	114	108	114	108	101
With a Related Allowance	0	0	0	0	0
Unpaid Principal Balance:
With No Related Allowance	113	109	113	109	100
With a Related Allowance	0	0	0	0	0
Average Recorded Balance:
With No Related Allowance	119	104	108	104
With a Related Allowance	0	0	0	0
Interest Income Recognized:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Cash Basis Income:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Residential
Recorded Investment:
With No Related Allowance	575	1,712	575	1,712	1,605
With a Related Allowance	0	346	0	346	294
Unpaid Principal Balance:
With No Related Allowance	575	1,733	575	1,733	1,606
With a Related Allowance	0	280	0	280	$ 293
Average Recorded Balance:
With No Related Allowance	1,489	1,371	1,090	1,371
With a Related Allowance	0	350	147	350
Interest Income Recognized:
With No Related Allowance	0	0	0	0
With a Related Allowance	0	0	0	0
Cash Basis Income:
With No Related Allowance	0	0	0	0
With a Related Allowance	$ 0	$ 0	$ 0	$ 0

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