Note 5 - Loans and Leases - Credit Risk Profile (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023
Notes receivable, gross	$ 1,798,802	[1]	$ 1,685,098	[2]
Current period gross write-offs	950		874
Commercial Portfolio Segment [Member]
Current period gross write-offs	399		320
Commercial Portfolio Segment [Member] | Commercial [Member]
Current year	26,711		30,328
Year two	22,554		19,712
Year three	11,536		23,124
Year four	18,521		4,868
Year five	2,969		6,975
Prior	15,572		12,535
Revolving loans	74,971		55,098
Revolving loans converted to term	0		0
Notes receivable, gross	172,834	[1]	152,640	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	141		300
Current period gross write-offs, year four	35		20
Current period gross write-offs, year five	21		0
Current period gross write-offs, prior	202		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	399		320
Commercial Portfolio Segment [Member] | Municipal [Member]
Current year	10,549		27,016
Year two	23,789		13,933
Year three	14,509		21,241
Year four	24,102		13,137
Year five	12,535		1,445
Prior	16,222		17,952
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	101,706	[1]	94,724	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		0
Commercial Portfolio Segment [Member] | Pass [Member] | Commercial [Member]
Current year	26,711		30,328
Year two	22,519		19,115
Year three	11,367		22,820
Year four	15,837		4,848
Year five	2,957		6,922
Prior	14,581		12,156
Revolving loans	74,871		53,758
Revolving loans converted to term	0		0
Notes receivable, gross	168,843		149,947
Commercial Portfolio Segment [Member] | Pass [Member] | Municipal [Member]
Current year	10,549		27,016
Year two	23,789		13,933
Year three	14,509		21,241
Year four	24,102		13,137
Year five	12,535		1,445
Prior	16,222		17,952
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	101,706		94,724
Commercial Portfolio Segment [Member] | Special Mention [Member] | Commercial [Member]
Current year	0		0
Year two	0		597
Year three	0		288
Year four	0		0
Year five	0		0
Prior	0		55
Revolving loans	0		30
Revolving loans converted to term	0		0
Notes receivable, gross	0		970
Commercial Portfolio Segment [Member] | Special Mention [Member] | Municipal [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Portfolio Segment [Member] | Substandard [Member] | Commercial [Member]
Current year	0		0
Year two	35		0
Year three	169		16
Year four	2,684		20
Year five	12		53
Prior	991		324
Revolving loans	100		1,310
Revolving loans converted to term	0		0
Notes receivable, gross	3,991		1,723
Commercial Portfolio Segment [Member] | Substandard [Member] | Municipal [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Commercial [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Municipal [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Consumer Portfolio Segment [Member]
Current period gross write-offs	419		463
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Current year	7,214		8,581
Year two	7,296		17,890
Year three	15,611		9,487
Year four	7,779		7,988
Year five	6,464		3,832
Prior	9,850		8,862
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	54,214	[1]	56,640	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	7		26
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	7		26
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Performing Financial Instruments [Member]
Current year	7,214		8,581
Year two	7,296		17,890
Year three	15,611		9,487
Year four	7,779		7,988
Year five	6,464		3,832
Prior	9,809		8,792
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	54,173		56,570
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Nonperforming Financial Instruments [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	41		70
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	41		70
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	47,948		41,303
Revolving loans converted to term	10,182		11,045
Notes receivable, gross	58,130	[1]	52,348	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	41		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	41		0
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Performing Financial Instruments [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	47,487		40,939
Revolving loans converted to term	10,182		11,045
Notes receivable, gross	57,669		51,984
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Nonperforming Financial Instruments [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	461		364
Revolving loans converted to term	0		0
Notes receivable, gross	461		364
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Recourse [Member]
Current year	4,743		3,120
Year two	2,336		1,957
Year three	1,179		2,834
Year four	1,735		1,926
Year five	1,094		765
Prior	302		154
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	11,389	[1]	10,756	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonrecourse [Member]
Current year	5,402		39,673
Year two	27,679		42,059
Year three	27,790		17,317
Year four	10,029		8,179
Year five	3,588		3,999
Prior	952		1,368
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	75,440	[1]	112,595	[2]
Current period gross write-offs, current year	0		3
Current period gross write-offs, year two	22		7
Current period gross write-offs, year three	67		105
Current period gross write-offs, year four	23		36
Current period gross write-offs, year five	6		15
Current period gross write-offs, prior	13		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	131		166
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Performing Financial Instruments [Member] | Recourse [Member]
Current year	4,743		3,120
Year two	2,336		1,957
Year three	1,179		2,834
Year four	1,735		1,926
Year five	1,094		765
Prior	302		154
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	11,389		10,756
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Performing Financial Instruments [Member] | Nonrecourse [Member]
Current year	5,402		39,673
Year two	27,679		42,059
Year three	27,790		17,314
Year four	9,981		8,162
Year five	3,588		3,999
Prior	948		1,349
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	75,388		112,556
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonperforming Financial Instruments [Member] | Recourse [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonperforming Financial Instruments [Member] | Nonrecourse [Member]
Current year	0		0
Year two	0		0
Year three	0		3
Year four	48		17
Year five	0		0
Prior	4		19
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	52		39
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member]
Current year	8,598	[3]	11,569	[4]
Year two	7,121	[3]	10,728	[4]
Year three	7,592	[3]	7,522	[4]
Year four	2,476	[3]	1,660	[4]
Year five	94	[3]	83	[4]
Prior	0	[3]	0	[4]
Revolving loans	0	[3]	0	[4]
Revolving loans converted to term	0	[3]	0	[4]
Notes receivable, gross	25,881	[3]	31,562	[2],[4]
Current period gross write-offs, current year	0	[3]	0	[4]
Current period gross write-offs, year two	0	[3]	0	[4]
Current period gross write-offs, year three	0	[3]	0	[4]
Current period gross write-offs, year four	0	[3]	0	[4]
Current period gross write-offs, year five	0	[3]	0	[4]
Current period gross write-offs, prior	0	[3]	0	[4]
Current period gross write-offs, revolving	0	[3]	0	[4]
Current period gross write-offs, revolving converted to term	0	[3]	0	[4]
Current period gross write-offs	0	[3]	0	[4]
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Performing Financial Instruments [Member]
Current year	8,598	[3]	11,569	[4]
Year two	7,121	[3]	10,728	[4]
Year three	7,592	[3]	7,508	[4]
Year four	2,444	[3]	1,660	[4]
Year five	94	[3]	83	[4]
Prior	0	[3]	0	[4]
Revolving loans	0	[3]	0	[4]
Revolving loans converted to term	0	[3]	0	[4]
Notes receivable, gross	25,849	[3]	31,548	[4]
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Nonperforming Financial Instruments [Member]
Current year	0	[3]	0	[4]
Year two	0	[3]	0	[4]
Year three	0	[3]	14	[4]
Year four	32	[3]	0	[4]
Year five	0	[3]	0	[4]
Prior	0	[3]	0	[4]
Revolving loans	0	[3]	0	[4]
Revolving loans converted to term	0	[3]	0	[4]
Notes receivable, gross	32	[3]	14	[4]
Consumer Portfolio Segment [Member] | Other Loan [Member]
Current year	11,794		8,127
Year two	6,048		3,266
Year three	1,780		1,963
Year four	1,055		705
Year five	398		368
Prior	617		762
Revolving loans	2,156		1,309
Revolving loans converted to term	0		0
Notes receivable, gross	23,848	[1]	16,500	[2]
Current period gross write-offs, current year	38		125
Current period gross write-offs, year two	93		77
Current period gross write-offs, year three	30		16
Current period gross write-offs, year four	31		7
Current period gross write-offs, year five	7		17
Current period gross write-offs, prior	41		29
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	240		271
Consumer Portfolio Segment [Member] | Other Loan [Member] | Performing Financial Instruments [Member]
Current year	11,794		8,127
Year two	6,048		3,266
Year three	1,760		1,963
Year four	1,055		705
Year five	398		368
Prior	617		762
Revolving loans	2,156		1,309
Revolving loans converted to term	0		0
Notes receivable, gross	23,828		16,500
Consumer Portfolio Segment [Member] | Other Loan [Member] | Nonperforming Financial Instruments [Member]
Current year	0		0
Year two	0		0
Year three	20		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	20		0
Commercial Real Estate Portfolio Segment [Member]
Current period gross write-offs	132		91
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Current year	69,675		34,349
Year two	34,230		57,939
Year three	72,073		74,913
Year four	67,239		48,521
Year five	45,330		16,811
Prior	97,159		97,970
Revolving loans	8,513		7,168
Revolving loans converted to term	0		0
Notes receivable, gross	394,219	[1]	337,671	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		32
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		32
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Current year	52,059		29,182
Year two	31,026		45,995
Year three	38,741		46,576
Year four	42,326		24,540
Year five	21,770		25,781
Prior	102,986		96,158
Revolving loans	15,981		10,061
Revolving loans converted to term	0		0
Notes receivable, gross	304,889	[1]	278,293	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	132		59
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	132		59
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Current year	21,400		15,075
Year two	26,055		17,358
Year three	1,665		852
Year four	0		0
Year five	0		0
Prior	293		3,739
Revolving loans	1,517		2,799
Revolving loans converted to term	0		0
Notes receivable, gross	50,930	[1]	39,823	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		0
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Non-owner Occupied [Member]
Current year	69,675		34,349
Year two	34,230		57,874
Year three	72,073		72,806
Year four	66,554		48,088
Year five	45,215		16,245
Prior	90,237		89,117
Revolving loans	8,513		7,168
Revolving loans converted to term	0		0
Notes receivable, gross	386,497		325,647
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied [Member]
Current year	52,059		29,182
Year two	31,026		38,767
Year three	31,983		45,643
Year four	41,420		23,980
Year five	20,746		25,781
Prior	91,316		85,167
Revolving loans	15,951		9,342
Revolving loans converted to term	0		0
Notes receivable, gross	284,501		257,862
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Current year	21,400		15,075
Year two	26,055		17,358
Year three	1,665		852
Year four	0		0
Year five	0		0
Prior	293		3,739
Revolving loans	1,517		2,799
Revolving loans converted to term	0		0
Notes receivable, gross	50,930		39,823
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Non-owner Occupied [Member]
Current year	0		0
Year two	0		0
Year three	0		1,044
Year four	0		304
Year five	0		0
Prior	0		1,375
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		2,723
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied [Member]
Current year	0		0
Year two	0		199
Year three	0		554
Year four	0		0
Year five	514		0
Prior	886		0
Revolving loans	0		125
Revolving loans converted to term	0		0
Notes receivable, gross	1,400		878
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Non-owner Occupied [Member]
Current year	0		0
Year two	0		65
Year three	0		1,063
Year four	685		129
Year five	115		566
Prior	6,922		7,478
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	7,722		9,301
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied [Member]
Current year			0
Year two	0		7,029
Year three	6,758		379
Year four	906		560
Year five	510		0
Prior	10,784		10,991
Revolving loans	30		594
Revolving loans converted to term	0		0
Notes receivable, gross	18,988		19,553
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Non-owner Occupied [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Owner Occupied [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Residential Portfolio Segment [Member]
Current period gross write-offs	(0)		(0)
Residential Portfolio Segment [Member] | Construction Loans [Member]
Current year	15,601		10,733
Year two	2,894		13,084
Year three	0		9,267
Year four	2,012		2,675
Year five	0		343
Prior	0		434
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	20,507	[1]	36,536	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		0
Residential Portfolio Segment [Member] | Construction Loans [Member] | Performing Financial Instruments [Member]
Current year	15,601		10,733
Year two	2,894		13,084
Year three	0		9,267
Year four	2,012		2,675
Year five	0		343
Prior	0		434
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	20,507		36,536
Residential Portfolio Segment [Member] | Construction Loans [Member] | Nonperforming Financial Instruments [Member]
Current year	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	0		0
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Current year	35,008		53,604
Year two	64,714		80,516
Year three	89,014		137,620
Year four	137,434		51,710
Year five	51,728		29,859
Prior	126,917		111,701
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	504,815	[1]	465,010	[2]
Current period gross write-offs, current year	0		0
Current period gross write-offs, year two	0		0
Current period gross write-offs, year three	0		0
Current period gross write-offs, year four	0		0
Current period gross write-offs, year five	0		0
Current period gross write-offs, prior	0		0
Current period gross write-offs, revolving	0		0
Current period gross write-offs, revolving converted to term	0		0
Current period gross write-offs	0		0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Performing Financial Instruments [Member]
Current year	35,008		53,604
Year two	64,399		80,516
Year three	89,014		137,620
Year four	137,434		51,710
Year five	51,728		29,859
Prior	126,471		111,423
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	504,054		464,732
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Nonperforming Financial Instruments [Member]
Current year	0		0
Year two	315		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	446		278
Revolving loans	0		0
Revolving loans converted to term	0		0
Notes receivable, gross	$ 761		$ 278

[1] Includes net deferred loan costs of $5.0 million.

[2] Includes net deferred loan costs of $4.9 million.

[3] Net of unearned lease revenue of $2.1 million.

[4] Net of unearned lease revenue of $2.0 million.