Note 4 - Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Land	$ 0		$ 0
Land	0		0
Financing Receivable, Year One	61,878		61,878		$ 138,098
Land	0		0
Financing Receivable, Year Two	150,059		150,059		189,958
Land	0		0
Financing Receivable, Year Three	185,929		185,929		164,104
Land	0		0
Financing Receivable, Year Four	172,827		172,827		96,408
Land	0		0
Financing Receivable, Year Five	90,500		90,500		84,627
Land	10		25
Financing Receivable, Prior	342,240		342,240		275,914
Land	10	$ 9	25	$ 29
Financing Receivable, Revolving	66,604		66,604		67,470
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	1,070,037		1,070,037		1,016,579
Pass [Member]
Financing Receivable, Year One	61,877		61,877		138,098
Financing Receivable, Year Two	148,474		148,474		189,958
Financing Receivable, Year Three	185,929		185,929		156,421
Financing Receivable, Year Four	165,286		165,286		96,269
Financing Receivable, Year Five	90,500		90,500		80,001
Financing Receivable, Prior	328,787		328,787		270,888
Financing Receivable, Revolving	62,034		62,034		65,862
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	1,042,887		1,042,887		997,497
Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	1,585		1,585		0
Financing Receivable, Year Three	0		0		7,683
Financing Receivable, Year Four	7,541		7,541		139
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	8,778		8,778		4,893
Financing Receivable, Revolving	4,570		4,570		1,608
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	22,474		22,474		14,323
Substandard [Member]
Financing Receivable, Year One	1		1		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	4,675		4,675		133
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	4,676		4,676		4,759
Commercial Portfolio Segment [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	10,151		10,151		10,967
Land	0		0
Financing Receivable, Year Two	12,071		12,071		11,268
Land	0		0
Financing Receivable, Year Three	10,554		10,554		9,608
Land	0		0
Financing Receivable, Year Four	7,874		7,874		6,157
Land	0		0
Financing Receivable, Year Five	4,764		4,764		4,384
Land	0		0
Financing Receivable, Prior	5,150		5,150		2,332
Land	(0)	(0)	(0)	12
Financing Receivable, Revolving	24,304		24,304		20,502
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	74,868		74,868		65,218
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	10,151		10,151		10,967
Financing Receivable, Year Two	12,071		12,071		11,268
Financing Receivable, Year Three	10,554		10,554		9,608
Financing Receivable, Year Four	7,874		7,874		6,018
Financing Receivable, Year Five	4,764		4,764		4,384
Financing Receivable, Prior	5,078		5,078		2,239
Financing Receivable, Revolving	24,304		24,304		20,502
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	74,796		74,796		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	3		3		6
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	3		3		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	69		69		87
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	69		69		87
Consumer Portfolio Segment [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	2,525		2,525		1,234
Land	0		0
Financing Receivable, Year Two	1,119		1,119		5,042
Land	0		0
Financing Receivable, Year Three	4,914		4,914		4,104
Land	0		0
Financing Receivable, Year Four	3,660		3,660		2,213
Land	0		0
Financing Receivable, Year Five	2,152		2,152		2,074
Land	10		25
Financing Receivable, Prior	9,304		9,304		7,601
Land	10	9	25	17
Financing Receivable, Revolving	9,555		9,555		9,419
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	33,229		33,229		31,687
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	2,524		2,524		1,234
Financing Receivable, Year Two	1,119		1,119		5,042
Financing Receivable, Year Three	4,914		4,914		4,104
Financing Receivable, Year Four	3,660		3,660		2,213
Financing Receivable, Year Five	2,152		2,152		2,074
Financing Receivable, Prior	9,260		9,260		7,555
Financing Receivable, Revolving	9,555		9,555		8,529
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	33,184		33,184		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	1		1		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	44		44		46
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	45		45		46
Agriculture [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	28		28		3,032
Land	0		0
Financing Receivable, Year Two	3,492		3,492		1,707
Land	0		0
Financing Receivable, Year Three	1,225		1,225		1,309
Land	0		0
Financing Receivable, Year Four	1,290		1,290		0
Land	0		0
Financing Receivable, Year Five	0		0		214
Land	0		0
Financing Receivable, Prior	577		577		488
Land	(0)	(0)	(0)	(0)
Financing Receivable, Revolving	30,421		30,421		19,172
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	37,033		37,033		25,922
Agriculture [Member] | Pass [Member]
Financing Receivable, Year One	28		28		3,032
Financing Receivable, Year Two	1,907		1,907		1,707
Financing Receivable, Year Three	1,225		1,225		1,309
Financing Receivable, Year Four	1,290		1,290		0
Financing Receivable, Year Five	0		0		214
Financing Receivable, Prior	577		577		488
Financing Receivable, Revolving	25,851		25,851		18,984
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	30,878		30,878		25,734
Agriculture [Member] | Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	1,585		1,585		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	4,570		4,570		188
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	6,155		6,155		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
Land	(0)	(0)	(0)	(0)
Financing Receivable, Revolving					0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	46,080		46,080		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	3,960		3,960
Financing Receivable, Year Two	16,357		16,357
Financing Receivable, Year Three	22,031		22,031
Financing Receivable, Year Four	923		923
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	2,809		2,809
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	46,080		46,080
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	3,960		3,960
Financing Receivable, Year Two	16,357		16,357
Financing Receivable, Year Three	22,031		22,031
Financing Receivable, Year Four	923		923
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	2,809		2,809
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	46,080		46,080
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	57,371		57,371		54,045
Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	16,836		16,836		10,031
Land	0		0
Financing Receivable, Year Two	9,913		9,913		40,666
Land	0		0
Financing Receivable, Year Three	43,013		43,013		56,060
Land	0		0
Financing Receivable, Year Four	54,796		54,796		25,642
Land	0		0
Financing Receivable, Year Five	24,678		24,678		18,967
Land	0		0
Financing Receivable, Prior	72,491		72,491		58,260
Land	(0)	(0)	(0)	(0)
Financing Receivable, Revolving	63		63		781
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	221,790		221,790		210,407
Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	16,836		16,836		10,031
Financing Receivable, Year Two	9,913		9,913		40,666
Financing Receivable, Year Three	43,013		43,013		48,377
Financing Receivable, Year Four	47,255		47,255		25,642
Financing Receivable, Year Five	24,678		24,678		14,341
Financing Receivable, Prior	67,645		67,645		57,971
Financing Receivable, Revolving	63		63		251
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	209,403		209,403		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	7,541		7,541		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	284		284		289
Financing Receivable, Revolving	0		0		530
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	7,825		7,825		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	4,562		4,562		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	4,562		4,562		4,626
Mortgage Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Year One	3,904		3,904		3,803
Financing Receivable, Year Two	4,746		4,746		6,976
Financing Receivable, Year Three	6,907		6,907		8,711
Financing Receivable, Year Four	7,738		7,738		3,473
Financing Receivable, Year Five	3,413		3,413		6,780
Financing Receivable, Prior	30,663		30,663		24,302
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	57,371		57,371		54,045
Mortgage Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	3,904		3,904		3,803
Financing Receivable, Year Two	4,746		4,746		6,976
Financing Receivable, Year Three	6,907		6,907		8,711
Financing Receivable, Year Four	7,738		7,738		3,473
Financing Receivable, Year Five	3,413		3,413		6,780
Financing Receivable, Prior	30,663		30,663		24,302
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	57,371		57,371		54,045
Non-owner Occupied [member] | Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	19,539		19,539		78,417
Land	0		0
Financing Receivable, Year Two	88,887		88,887		71,236
Land	0		0
Financing Receivable, Year Three	87,073		87,073		81,386
Land	0		0
Financing Receivable, Year Four	79,806		79,806		43,531
Land	0		0
Financing Receivable, Year Five	40,724		40,724		44,413
Land	0		0
Financing Receivable, Prior	186,664		186,664		149,190
Land	(0)	(0)	(0)	(0)
Financing Receivable, Revolving	2,261		2,261		1,879
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	504,954		504,954		470,052
Non-owner Occupied [member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	19,539		19,539		78,417
Financing Receivable, Year Two	88,887		88,887		71,236
Financing Receivable, Year Three	87,073		87,073		81,386
Financing Receivable, Year Four	79,806		79,806		43,531
Financing Receivable, Year Five	40,724		40,724		44,413
Financing Receivable, Prior	184,261		184,261		145,073
Financing Receivable, Revolving	2,261		2,261		1,879
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	502,551		502,551		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	2,403		2,403		4,117
Financing Receivable, Revolving	0		0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	2,403		2,403		4,117
Farmland Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Land	0		0
Land	0		0
Financing Receivable, Year One	4,935		4,935		14,377
Land	0		0
Financing Receivable, Year Two	13,474		13,474		10,393
Land	0		0
Financing Receivable, Year Three	10,212		10,212		1,667
Land	0		0
Financing Receivable, Year Four	16,740		16,740		15,392
Land	0		0
Financing Receivable, Year Five	14,769		14,769		6,551
Land	0		0
Financing Receivable, Prior	34,582		34,582		32,091
Land	(0)	$ (0)	(0)	$ (0)
Financing Receivable, Revolving	0		0		15,717
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	94,712		94,712		96,188
Farmland Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Year One	4,935		4,935		14,377
Financing Receivable, Year Two	13,474		13,474		10,393
Financing Receivable, Year Three	10,212		10,212		1,667
Financing Receivable, Year Four	16,740		16,740		15,392
Financing Receivable, Year Five	14,769		14,769		6,551
Financing Receivable, Prior	28,494		28,494		31,610
Financing Receivable, Revolving	0		0		15,717
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	88,624		88,624		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	0		0
Financing Receivable, Prior	6,088		6,088
Financing Receivable, Revolving	0		0
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process	$ 6,088		$ 6,088