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Note 3 - Loans and Allowance for Loan Losses - Impaired Loans by Loan Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Recorded Investment with no related allowance recorded	$ 307		$ 307		$ 572
Unpaid Principal Balance with no related allowance recorded	428		428		694
Recorded Investment with an allowance recorded	2,330		2,330		4,861
Unpaid Principal Balance with an allowance recorded	2,486		2,486		4,943
Related Allowance	157		157		503
Recorded Investment	2,637		2,637		5,433
Unpaid Principal Balance	2,914		2,914		5,637
Average Recorded Investment with no related allowance recorded	530	$ 1,816	509	$ 3,049
Interest Income Recognized with no related allowance recorded	0	2	0	86
Average Recorded Investment with an allowance recorded	2,134	4,574	3,415	4,706
Interest Income Recognized with an allowance recorded	19	54	59	129
Average Recorded Investment	2,664	6,390	3,924	7,755
Interest Income Recognized	19	56	59	215
Agricultural [Member]
Recorded Investment with no related allowance recorded	307		307		314
Unpaid Principal Balance with no related allowance recorded	428		428		428
Recorded Investment with an allowance recorded	5		5		2,302
Unpaid Principal Balance with an allowance recorded	5		5		2,302
Related Allowance	1		1		251
Recorded Investment	312		312		2,616
Unpaid Principal Balance	433		433		2,730
Average Recorded Investment with no related allowance recorded	310	989	312	669
Interest Income Recognized with no related allowance recorded	0	0	0	52
Average Recorded Investment with an allowance recorded	6	2,119	1,136	1,766
Interest Income Recognized with an allowance recorded	0	36	0	71
Average Recorded Investment	316	3,108	1,448	2,435
Interest Income Recognized	0	36	0	123
Commercial and Industrial [Member]
Recorded Investment with no related allowance recorded	0		0		0
Unpaid Principal Balance with no related allowance recorded	0		0		0
Recorded Investment with an allowance recorded	108		108		339
Unpaid Principal Balance with an allowance recorded	185		185		363
Related Allowance	6		6		95
Recorded Investment	108		108		339
Unpaid Principal Balance	185		185		363
Average Recorded Investment with no related allowance recorded	0	0	23	745
Interest Income Recognized with no related allowance recorded	0	0	0	0
Average Recorded Investment with an allowance recorded	134	240	217	198
Interest Income Recognized with an allowance recorded	1	2	3	3
Average Recorded Investment	134	240	240	943
Interest Income Recognized	1	2	3	3
Consumer Portfolio Segment [Member]
Recorded Investment with no related allowance recorded	0		0		0
Unpaid Principal Balance with no related allowance recorded	0		0		0
Recorded Investment with an allowance recorded	7		7		14
Unpaid Principal Balance with an allowance recorded	7		7		15
Related Allowance	1		1		2
Recorded Investment	7		7		14
Unpaid Principal Balance	7		7		15
Average Recorded Investment with no related allowance recorded	0	0	0	0
Interest Income Recognized with no related allowance recorded	0	0	0	0
Average Recorded Investment with an allowance recorded	7	0	15	2
Interest Income Recognized with an allowance recorded	0	0	0	0
Average Recorded Investment	7	0	15	2
Interest Income Recognized	0	0		0
Construction Real Estate [Member]
Recorded Investment with no related allowance recorded	0		0		0
Unpaid Principal Balance with no related allowance recorded	0		0		0
Recorded Investment with an allowance recorded	0		0		0
Unpaid Principal Balance with an allowance recorded	0		0		0
Related Allowance	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Average Recorded Investment with no related allowance recorded	0	0	0	20
Interest Income Recognized with no related allowance recorded	0	0	0	0
Average Recorded Investment with an allowance recorded	0	0	0	0
Interest Income Recognized with an allowance recorded	0	0	0	0
Average Recorded Investment	0	0		20
Interest Income Recognized	0	0		0
Commercial Real Estate Portfolio Segment [Member]
Recorded Investment with no related allowance recorded	0		0		94
Unpaid Principal Balance with no related allowance recorded	0		0		94
Recorded Investment with an allowance recorded	140		140		179
Unpaid Principal Balance with an allowance recorded	140		140		179
Related Allowance	6		6		9
Recorded Investment	140		140		273
Unpaid Principal Balance	140		140		273
Average Recorded Investment with no related allowance recorded	0	507	23	1,372
Interest Income Recognized with no related allowance recorded	0	2	0	34
Average Recorded Investment with an allowance recorded	145	272	156	525
Interest Income Recognized with an allowance recorded	2	2	7	8
Average Recorded Investment	145	779	179	1,897
Interest Income Recognized	2	4	7	42
Residential Portfolio Segment [Member]
Recorded Investment with no related allowance recorded	0		0		164
Unpaid Principal Balance with no related allowance recorded	0		0		172
Recorded Investment with an allowance recorded	2,070		2,070		2,027
Unpaid Principal Balance with an allowance recorded	2,149		2,149		2,084
Related Allowance	143		143		146
Recorded Investment	2,070		2,070		2,191
Unpaid Principal Balance	2,149		2,149		$ 2,256
Average Recorded Investment with no related allowance recorded	220	320	151	243
Interest Income Recognized with no related allowance recorded	0	0	0	0
Average Recorded Investment with an allowance recorded	1,842	1,943	1,891	2,215
Interest Income Recognized with an allowance recorded	16	14	49	47
Average Recorded Investment	2,062	2,263	2,042	2,458
Interest Income Recognized	$ 16	$ 14	$ 49	$ 47

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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