Loans, Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Recorded Investment
With no related allowance recorded	$ 10,039		$ 10,039		$ 12,727
With an allowance recorded	2,319		2,319		3,134
Total	12,358		12,358		15,861
Unpaid Principal Balance
With no related allowance recorded	11,586		11,586		14,679
With an allowance recorded	2,534		2,534		3,286
Total	14,120		14,120		17,965
Related Allowance
With an allowance recorded	28		28		295
Average Recorded Investment
With no related allowance recorded	10,481	$ 22,087	11,827	$ 22,765
With an allowance recorded	2,328	1,228	2,351	1,194
Total	12,809	23,315	14,178	23,959
Interest Income Recognized
With no related allowance recorded	277	399	984	663
With an allowance recorded	21	6	39	21
Total	298	405	1,023	684
Cash basis interest expense on impaired loans			10,000	0
Commercial and industrial [Member]
Recorded Investment
With no related allowance recorded	1,142		1,142		711
With an allowance recorded	212		212		230
Total	1,354		1,354		941
Unpaid Principal Balance
With no related allowance recorded	1,460		1,460		1,253
With an allowance recorded	212		212		235
Total	1,672		1,672		1,488
Related Allowance
With an allowance recorded	8		8		6
Average Recorded Investment
With no related allowance recorded	1,219	851	1,227	876
With an allowance recorded	216	267	221	264
Total	1,435	1,118	1,448	1,140
Interest Income Recognized
With no related allowance recorded	18	8	289	9
With an allowance recorded	5	4	8	8
Total	23	12	297	17
Commercial, secured by real estate [Member]
Recorded Investment
With no related allowance recorded	5,703		5,703		8,625
With an allowance recorded	1,786		1,786		2,338
Total	7,489		7,489		10,963
Unpaid Principal Balance
With no related allowance recorded	6,352		6,352		9,373
With an allowance recorded	2,001		2,001		2,485
Total	8,353		8,353		11,858
Related Allowance
With an allowance recorded	8		8		272
Average Recorded Investment
With no related allowance recorded	5,981	17,250	7,172	17,830
With an allowance recorded	1,786	144	1,799	147
Total	7,767	17,394	8,971	17,977
Interest Income Recognized
With no related allowance recorded	196	330	530	527
With an allowance recorded	11	2	21	3
Total	207	332	551	530
Residential real estate [Member]
Recorded Investment
With no related allowance recorded	2,963		2,963		3,118
With an allowance recorded	318		318		549
Total	3,281		3,281		3,667
Unpaid Principal Balance
With no related allowance recorded	3,418		3,418		3,651
With an allowance recorded	318		318		549
Total	3,736		3,736		4,200
Related Allowance
With an allowance recorded	12		12		17
Average Recorded Investment
With no related allowance recorded	3,026	3,652	3,162	3,719
With an allowance recorded	323	796	327	762
Total	3,349	4,448	3,489	4,481
Interest Income Recognized
With no related allowance recorded	56	52	149	108
With an allowance recorded	5	0	10	10
Total	61	52	159	118
Consumer [Member]
Recorded Investment
With no related allowance recorded	7		7		10
With an allowance recorded	3		3		17
Total	10		10		27
Unpaid Principal Balance
With no related allowance recorded	7		7		10
With an allowance recorded	3		3		17
Total	10		10		27
Related Allowance
With an allowance recorded	0		0		0
Average Recorded Investment
With no related allowance recorded	8	12	14	13
With an allowance recorded	3	21	4	21
Total	11	33	18	34
Interest Income Recognized
With no related allowance recorded	0	0	1	1
With an allowance recorded	0	0	0	0
Total	0	0	1	1
Agricultural [Member]
Recorded Investment
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Total	0		0		0
Unpaid Principal Balance
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Total	0		0		0
Related Allowance
With an allowance recorded	0		0		0
Average Recorded Investment
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Total	0	0	0	0
Interest Income Recognized
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Total	0	0	0	0
Other [Member]
Recorded Investment
With no related allowance recorded	224		224		263
With an allowance recorded	0		0		0
Total	224		224		263
Unpaid Principal Balance
With no related allowance recorded	349		349		392
With an allowance recorded	0		0		0
Total	349		349		392
Related Allowance
With an allowance recorded	0		0		$ 0
Average Recorded Investment
With no related allowance recorded	247	322	252	327
With an allowance recorded	0	0	0	0
Total	247	322	252	327
Interest Income Recognized
With no related allowance recorded	7	9	15	18
With an allowance recorded	0	0	0	0
Total	$ 7	$ 9	$ 15	$ 18