Note 4 - Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Land	$ 0		$ 0
Financing Receivable, Year One	92,042		92,042		$ 138,098
Land	0		0
Financing Receivable, Year Two	151,390		151,390		189,958
Land	0		0
Financing Receivable, Year Three	184,352		184,352		164,104
Land	0		0
Financing Receivable, Year Four	170,293		170,293		96,408
Land	0		0
Financing Receivable, Year Five	88,148		88,148		84,627
Land	0		0
Financing Receivable, Prior	333,052		333,052		275,914
Land	14		39
Financing Receivable, Revolving	55,861		55,861		67,470
Land	14	$ 11	39	$ 40
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	1,075,138		1,075,138		1,016,579
Pass [Member]
Financing Receivable, Year One	92,042		92,042		138,098
Financing Receivable, Year Two	149,813		149,813		189,958
Financing Receivable, Year Three	184,352		184,352		156,421
Financing Receivable, Year Four	162,824		162,824		96,269
Financing Receivable, Year Five	85,847		85,847		80,001
Financing Receivable, Prior	315,366		315,366		270,888
Financing Receivable, Revolving	50,818		50,818		65,862
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	1,041,062		1,041,062		997,497
Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	1,577		1,577		0
Financing Receivable, Year Three	0		0		7,683
Financing Receivable, Year Four	7,469		7,469		139
Financing Receivable, Year Five	2,301		2,301		0
Financing Receivable, Prior	13,050		13,050		4,893
Financing Receivable, Revolving	5,043		5,043		1,608
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	29,440		29,440		14,323
Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		4,626
Financing Receivable, Prior	4,636		4,636		133
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	4,636		4,636		4,759
Commercial Portfolio Segment [Member]
Land	0		0
Financing Receivable, Year One	23,422		23,422		10,967
Land	0		0
Financing Receivable, Year Two	11,769		11,769		11,268
Land	0		0
Financing Receivable, Year Three	10,053		10,053		9,608
Land	0		0
Financing Receivable, Year Four	7,240		7,240		6,157
Land	0		0
Financing Receivable, Year Five	4,027		4,027		4,384
Land	0		0
Financing Receivable, Prior	4,694		4,694		2,332
Land	0		0
Financing Receivable, Revolving	20,234		20,234		20,502
Land	(0)	(0)	(0)	12
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	81,439		81,439		65,218
Commercial Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	23,422		23,422		10,967
Financing Receivable, Year Two	11,769		11,769		11,268
Financing Receivable, Year Three	10,053		10,053		9,608
Financing Receivable, Year Four	7,240		7,240		6,018
Financing Receivable, Year Five	4,027		4,027		4,384
Financing Receivable, Prior	4,633		4,633		2,239
Financing Receivable, Revolving	20,234		20,234		20,502
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	81,378		81,378		64,986
Commercial Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		139
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	2		2		6
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	2		2		145
Commercial Portfolio Segment [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	59		59		87
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	59		59		87
Consumer Portfolio Segment [Member]
Land	0		0
Financing Receivable, Year One	3,939		3,939		1,234
Land	0		0
Financing Receivable, Year Two	1,074		1,074		5,042
Land	0		0
Financing Receivable, Year Three	4,832		4,832		4,104
Land	0		0
Financing Receivable, Year Four	3,578		3,578		2,213
Land	0		0
Financing Receivable, Year Five	2,119		2,119		2,074
Land	0		0
Financing Receivable, Prior	9,017		9,017		7,601
Land	14		39
Financing Receivable, Revolving	9,053		9,053		9,419
Land	14	11	39	28
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	33,612		33,612		31,687
Consumer Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	3,939		3,939		1,234
Financing Receivable, Year Two	1,074		1,074		5,042
Financing Receivable, Year Three	4,832		4,832		4,104
Financing Receivable, Year Four	3,578		3,578		2,213
Financing Receivable, Year Five	2,119		2,119		2,074
Financing Receivable, Prior	8,975		8,975		7,555
Financing Receivable, Revolving	9,053		9,053		8,529
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	33,570		33,570		30,751
Consumer Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One					0
Financing Receivable, Year Two					0
Financing Receivable, Year Three					0
Financing Receivable, Year Four					0
Financing Receivable, Year Five					0
Financing Receivable, Prior					0
Financing Receivable, Revolving					890
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process					890
Consumer Portfolio Segment [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	42		42		46
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	42		42		46
Agriculture [Member]
Land	0		0
Financing Receivable, Year One	28		28		3,032
Land	0		0
Financing Receivable, Year Two	3,469		3,469		1,707
Land	0		0
Financing Receivable, Year Three	1,120		1,120		1,309
Land	0		0
Financing Receivable, Year Four	1,281		1,281		0
Land	0		0
Financing Receivable, Year Five	0		0		214
Land	0		0
Financing Receivable, Prior	518		518		488
Land	0		0
Financing Receivable, Revolving	24,360		24,360		19,172
Land	(0)	(0)	(0)	(0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	30,776		30,776		25,922
Agriculture [Member] \| Pass [Member]
Financing Receivable, Year One	28		28		3,032
Financing Receivable, Year Two	1,892		1,892		1,707
Financing Receivable, Year Three	1,120		1,120		1,309
Financing Receivable, Year Four	1,281		1,281		0
Financing Receivable, Year Five	0		0		214
Financing Receivable, Prior	518		518		488
Financing Receivable, Revolving	19,317		19,317		18,984
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	24,156		24,156		25,734
Agriculture [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	1,577		1,577		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	5,043		5,043		188
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	6,620		6,620		188
Land Loans [Member] \| Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Construction and Land [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Year One					16,237
Financing Receivable, Year Two					42,670
Financing Receivable, Year Three					1,259
Financing Receivable, Year Four					0
Financing Receivable, Year Five					1,244
Financing Receivable, Prior					1,650
Financing Receivable, Revolving					0
Land	(0)	(0)	(0)	(0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	31,300		31,300		63,060
Construction and Land [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One					16,237
Financing Receivable, Year Two					42,670
Financing Receivable, Year Three					1,259
Financing Receivable, Year Four					0
Financing Receivable, Year Five					1,244
Financing Receivable, Prior					1,650
Financing Receivable, Revolving					0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process					63,060
Construction Loans [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Year One	6,853		6,853
Financing Receivable, Year Two	8,291		8,291
Financing Receivable, Year Three	13,659		13,659
Financing Receivable, Year Four	923		923
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	1,574		1,574
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	31,300		31,300
Construction Loans [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	6,853		6,853
Financing Receivable, Year Two	8,291		8,291
Financing Receivable, Year Three	13,659		13,659
Financing Receivable, Year Four	923		923
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	1,574		1,574
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	31,300		31,300
Multifamily [Member] \| Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	0		0
Land	(0)	(0)	(0)	(0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	58,360		58,360		54,045
Owner Occupied [Member] \| Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Financing Receivable, Year One	24,097		24,097		10,031
Land	0		0
Financing Receivable, Year Two	9,851		9,851		40,666
Land	0		0
Financing Receivable, Year Three	45,198		45,198		56,060
Land	0		0
Financing Receivable, Year Four	54,158		54,158		25,642
Land	0		0
Financing Receivable, Year Five	23,744		23,744		18,967
Land	0		0
Financing Receivable, Prior	71,068		71,068		58,260
Land	0		0
Financing Receivable, Revolving	400		400		781
Land	(0)	(0)	(0)	(0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	228,516		228,516		210,407
Owner Occupied [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	24,097		24,097		10,031
Financing Receivable, Year Two	9,851		9,851		40,666
Financing Receivable, Year Three	45,198		45,198		48,377
Financing Receivable, Year Four	46,689		46,689		25,642
Financing Receivable, Year Five	23,744		23,744		14,341
Financing Receivable, Prior	66,252		66,252		57,971
Financing Receivable, Revolving	400		400		251
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	216,231		216,231		197,279
Owner Occupied [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		7,683
Financing Receivable, Year Four	7,469		7,469		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	281		281		289
Financing Receivable, Revolving	0		0		530
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	7,750		7,750		8,502
Owner Occupied [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		4,626
Financing Receivable, Prior	4,535		4,535		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	4,535		4,535		4,626
Mortgage Loans [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Year One	5,238		5,238		3,803
Financing Receivable, Year Two	4,731		4,731		6,976
Financing Receivable, Year Three	6,872		6,872		8,711
Financing Receivable, Year Four	7,710		7,710		3,473
Financing Receivable, Year Five	3,383		3,383		6,780
Financing Receivable, Prior	30,426		30,426		24,302
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	58,360		58,360		54,045
Mortgage Loans [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	5,238		5,238		3,803
Financing Receivable, Year Two	4,731		4,731		6,976
Financing Receivable, Year Three	6,872		6,872		8,711
Financing Receivable, Year Four	7,710		7,710		3,473
Financing Receivable, Year Five	3,383		3,383		6,780
Financing Receivable, Prior	30,426		30,426		24,302
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	58,360		58,360		54,045
Non-owner Occupied [member] \| Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Financing Receivable, Year One	23,468		23,468		78,417
Land	0		0
Financing Receivable, Year Two	98,817		98,817		71,236
Land	0		0
Financing Receivable, Year Three	92,487		92,487		81,386
Land	0		0
Financing Receivable, Year Four	78,680		78,680		43,531
Land	0		0
Financing Receivable, Year Five	40,288		40,288		44,413
Land	0		0
Financing Receivable, Prior	181,700		181,700		149,190
Land	0		0
Financing Receivable, Revolving	1,814		1,814		1,879
Land	(0)	(0)	(0)	(0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	517,254		517,254		470,052
Non-owner Occupied [member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	23,468		23,468		78,417
Financing Receivable, Year Two	98,817		98,817		71,236
Financing Receivable, Year Three	92,487		92,487		81,386
Financing Receivable, Year Four	78,680		78,680		43,531
Financing Receivable, Year Five	40,288		40,288		44,413
Financing Receivable, Prior	174,935		174,935		145,073
Financing Receivable, Revolving	1,814		1,814		1,879
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	510,489		510,489		465,935
Non-owner Occupied [member] \| Commercial Real Estate Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	6,765		6,765		4,117
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	6,765		6,765		4,117
Farmland Loans [Member] \| Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Financing Receivable, Year One	4,997		4,997		14,377
Land	0		0
Financing Receivable, Year Two	13,388		13,388		10,393
Land	0		0
Financing Receivable, Year Three	10,131		10,131		1,667
Land	0		0
Financing Receivable, Year Four	16,723		16,723		15,392
Land	0		0
Financing Receivable, Year Five	14,587		14,587		6,551
Land	0		0
Financing Receivable, Prior	34,055		34,055		32,091
Land	0		0
Financing Receivable, Revolving	0		0		15,717
Land	(0)	$ (0)	(0)	$ (0)
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	93,881		93,881		96,188
Farmland Loans [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	4,997		4,997		14,377
Financing Receivable, Year Two	13,388		13,388		10,393
Financing Receivable, Year Three	10,131		10,131		1,667
Financing Receivable, Year Four	16,723		16,723		15,392
Financing Receivable, Year Five	12,286		12,286		6,551
Financing Receivable, Prior	28,053		28,053		31,610
Financing Receivable, Revolving	0		0		15,717
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	85,578		85,578		95,707
Farmland Loans [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One					0
Financing Receivable, Year Two					0
Financing Receivable, Year Three					0
Financing Receivable, Year Four					0
Financing Receivable, Year Five					0
Financing Receivable, Prior					481
Financing Receivable, Revolving					0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process					$ 481
Farmland Loans [Member] \| Commercial Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0
Financing Receivable, Year Two	0		0
Financing Receivable, Year Three	0		0
Financing Receivable, Year Four	0		0
Financing Receivable, Year Five	2,301		2,301
Financing Receivable, Prior	6,002		6,002
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	$ 8,303		$ 8,303

Note 4 - Loans - Credit Quality Indicators (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2024

Sep. 30, 2023

Sep. 30, 2024

Sep. 30, 2023

Dec. 31, 2023

Land

$ 0

Financing Receivable, Year One

92,042