Note 5 - Loans and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Current Fiscal Year	$ 428,011		$ 428,011		$ 596,067
Fiscal Year before Current Fiscal Year	559,360		559,360		667,909
Two Years before Current Fiscal Year	658,012		658,012		452,797
Three Years before Current Fiscal Year	407,847		407,847		341,964
Four Years before Current Fiscal Year	300,980		300,980		191,674
More than Four Years before Current Fiscal Year	405,919		405,919		273,541
Revolving	272,214		272,214		235,631
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,032,343		3,032,343		2,759,583
Current Fiscal Year, Gross Charge-offs			0		43
Fiscal Year before Current Fiscal Year, Gross Charge-offs			197		2
Two Years before Current Fiscal Year, Gross Charge-offs			32		58
Three Years before Current Fiscal Year, Gross Charge-offs			150		42
Four Years before Current Fiscal Year, Gross Charge-offs			2,672		253
More than Four Years before Current Fiscal Year, Gross Charge-offs			393		215
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	505	$ 151	3,444	$ 516	613
Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,122,945		2,122,945		1,849,267
Loans, Gross Charge-offs	344	134	3,267	394
Commercial Borrower [Member] | Commercial Portfolio Segment [Member]
Current Fiscal Year	139,653		139,653		190,107
Fiscal Year before Current Fiscal Year	152,820		152,820		88,077
Two Years before Current Fiscal Year	63,749		63,749		67,073
Three Years before Current Fiscal Year	54,046		54,046		68,695
Four Years before Current Fiscal Year	53,815		53,815		31,953
More than Four Years before Current Fiscal Year	40,896		40,896		17,392
Revolving	101,266		101,266		98,883
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	606,245		606,245		562,180
Current Fiscal Year, Gross Charge-offs			0		39
Fiscal Year before Current Fiscal Year, Gross Charge-offs			191		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		49
Three Years before Current Fiscal Year, Gross Charge-offs			0		11
Four Years before Current Fiscal Year, Gross Charge-offs			2,668		247
More than Four Years before Current Fiscal Year, Gross Charge-offs			281		90
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs			3,140		436
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Pass [Member]
Current Fiscal Year	139,653		139,653		189,643
Fiscal Year before Current Fiscal Year	147,857		147,857		83,233
Two Years before Current Fiscal Year	63,749		63,749		66,837
Three Years before Current Fiscal Year	40,651		40,651		62,367
Four Years before Current Fiscal Year	50,753		50,753		31,859
More than Four Years before Current Fiscal Year	38,881		38,881		14,879
Revolving	90,695		90,695		83,522
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	572,239		572,239		532,340
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Special Mention [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	515		515		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	9,368		9,368		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	6		6		0
Revolving	192		192		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	10,081		10,081		0
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Substandard [Member]
Current Fiscal Year	0		0		464
Fiscal Year before Current Fiscal Year	4,448		4,448		4,844
Two Years before Current Fiscal Year	0		0		236
Three Years before Current Fiscal Year	4,027		4,027		6,328
Four Years before Current Fiscal Year	3,062		3,062		94
More than Four Years before Current Fiscal Year	2,009		2,009		2,513
Revolving	10,379		10,379		15,361
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	23,925		23,925		29,840
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Doubtful [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,431,443		1,431,443		1,210,114
Loans, Gross Charge-offs	98	(0)	127	(0)
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction, Land, and Development [Member]
Current Fiscal Year	48,935		48,935		29,902
Fiscal Year before Current Fiscal Year	58,373		58,373		78,611
Two Years before Current Fiscal Year	49,374		49,374		14,326
Three Years before Current Fiscal Year	1,263		1,263		122
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	1,652		1,652		952
Revolving	14,032		14,032		121
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	173,629		173,629		124,034
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Current Fiscal Year	24,189		24,189		71,994
Fiscal Year before Current Fiscal Year	57,051		57,051		67,368
Two Years before Current Fiscal Year	110,246		110,246		16,637
Three Years before Current Fiscal Year	18,525		18,525		48,643
Four Years before Current Fiscal Year	44,446		44,446		24,581
More than Four Years before Current Fiscal Year	20,786		20,786		15,745
Revolving	134		134		135
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	275,377		275,377		245,103
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-Owner Occupied [Member]
Current Fiscal Year	110,526		110,526		154,813
Fiscal Year before Current Fiscal Year	154,417		154,417		127,550
Two Years before Current Fiscal Year	146,842		146,842		79,046
Three Years before Current Fiscal Year	71,486		71,486		62,857
Four Years before Current Fiscal Year	60,671		60,671		70,144
More than Four Years before Current Fiscal Year	137,487		137,487		69,823
Revolving	4,642		4,642		5,121
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	686,071		686,071		569,354
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member]
Current Fiscal Year	52,339		52,339		39,030
Fiscal Year before Current Fiscal Year	33,230		33,230		55,924
Two Years before Current Fiscal Year	52,002		52,002		44,495
Three Years before Current Fiscal Year	45,787		45,787		36,339
Four Years before Current Fiscal Year	28,424		28,424		25,155
More than Four Years before Current Fiscal Year	82,786		82,786		68,142
Revolving	1,798		1,798		2,538
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	296,366		296,366		271,623
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			29		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			98		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	98	(0)	127	(0)	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction, Land, and Development [Member]
Current Fiscal Year	47,796		47,796		29,902
Fiscal Year before Current Fiscal Year	58,373		58,373		57,944
Two Years before Current Fiscal Year	25,508		25,508		14,326
Three Years before Current Fiscal Year	1,263		1,263		122
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	1,652		1,652		952
Revolving	14,032		14,032		121
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	148,624		148,624		103,367
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Multifamily Loan [Member]
Current Fiscal Year	24,189		24,189		71,994
Fiscal Year before Current Fiscal Year	57,051		57,051		67,368
Two Years before Current Fiscal Year	110,246		110,246		16,637
Three Years before Current Fiscal Year	18,525		18,525		48,643
Four Years before Current Fiscal Year	31,639		31,639		24,581
More than Four Years before Current Fiscal Year	20,484		20,484		15,435
Revolving	134		134		135
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	262,268		262,268		244,793
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Non-Owner Occupied [Member]
Current Fiscal Year	110,526		110,526		154,813
Fiscal Year before Current Fiscal Year	154,417		154,417		127,550
Two Years before Current Fiscal Year	146,842		146,842		79,046
Three Years before Current Fiscal Year	56,666		56,666		62,857
Four Years before Current Fiscal Year	60,671		60,671		69,269
More than Four Years before Current Fiscal Year	132,675		132,675		69,680
Revolving	64		64		5,121
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	661,861		661,861		568,336
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Loans [Member]
Current Fiscal Year	52,339		52,339		39,030
Fiscal Year before Current Fiscal Year	32,986		32,986		55,337
Two Years before Current Fiscal Year	49,367		49,367		41,623
Three Years before Current Fiscal Year	42,406		42,406		36,339
Four Years before Current Fiscal Year	28,424		28,424		22,340
More than Four Years before Current Fiscal Year	76,053		76,053		66,574
Revolving	1,798		1,798		2,538
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	283,373		283,373		263,781
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction, Land, and Development [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Multifamily Loan [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	12,807		12,807		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	12,807		12,807		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Non-Owner Occupied [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	7,032		7,032		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	1,098		1,098		0
Revolving	4,578		4,578		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	12,708		12,708		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	944		944		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	336		336		262
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,280		1,280		262
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction, Land, and Development [Member]
Current Fiscal Year	1,139		1,139		0
Fiscal Year before Current Fiscal Year	0		0		20,667
Two Years before Current Fiscal Year	23,866		23,866		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	25,005		25,005		20,667
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Multifamily Loan [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	302		302		310
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	302		302		310
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Non-Owner Occupied [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	7,788		7,788		0
Four Years before Current Fiscal Year	0		0		875
More than Four Years before Current Fiscal Year	3,714		3,714		143
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,502		11,502		1,018
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	244		244		587
Two Years before Current Fiscal Year	2,635		2,635		2,872
Three Years before Current Fiscal Year	2,437		2,437		0
Four Years before Current Fiscal Year	0		0		2,815
More than Four Years before Current Fiscal Year	6,397		6,397		1,306
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,713		11,713		7,580
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction, Land, and Development [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Multifamily Loan [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Non-Owner Occupied [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Owner Occupied Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	85,257		85,257		76,973
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Land [Member]
Current Fiscal Year	8,423		8,423		6,424
Fiscal Year before Current Fiscal Year	5,957		5,957		15,294
Two Years before Current Fiscal Year	14,892		14,892		4,721
Three Years before Current Fiscal Year	4,504		4,504		5,958
Four Years before Current Fiscal Year	5,461		5,461		672
More than Four Years before Current Fiscal Year	6,502		6,502		7,763
Revolving	82		82		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	45,821		45,821		40,832
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Production Loans [Member]
Current Fiscal Year	6,913		6,913		7,890
Fiscal Year before Current Fiscal Year	6,178		6,178		5,858
Two Years before Current Fiscal Year	6,044		6,044		854
Three Years before Current Fiscal Year	493		493		1,904
Four Years before Current Fiscal Year	1,294		1,294		2,744
More than Four Years before Current Fiscal Year	599		599		174
Revolving	17,915		17,915		16,717
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	39,436		39,436		36,141
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Pass [Member] | Land [Member]
Current Fiscal Year	8,423		8,423		6,424
Fiscal Year before Current Fiscal Year	5,653		5,653		15,294
Two Years before Current Fiscal Year	12,726		12,726		4,721
Three Years before Current Fiscal Year	4,504		4,504		5,958
Four Years before Current Fiscal Year	5,461		5,461		672
More than Four Years before Current Fiscal Year	6,502		6,502		7,763
Revolving	82		82		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	43,351		43,351		40,832
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Pass [Member] | Production Loans [Member]
Current Fiscal Year	6,913		6,913		7,890
Fiscal Year before Current Fiscal Year	6,178		6,178		5,858
Two Years before Current Fiscal Year	4,709		4,709		854
Three Years before Current Fiscal Year	493		493		1,904
Four Years before Current Fiscal Year	1,294		1,294		2,744
More than Four Years before Current Fiscal Year	599		599		174
Revolving	17,915		17,915		16,717
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	38,101		38,101		36,141
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Special Mention [Member] | Land [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Special Mention [Member] | Production Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Substandard [Member] | Land [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	304		304		0
Two Years before Current Fiscal Year	2,166		2,166		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,470		2,470		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Substandard [Member] | Production Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	1,335		1,335		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,335		1,335		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Doubtful [Member] | Land [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Doubtful [Member] | Production Loans [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0		0
Consumer Borrower [Member]
Loans, Gross Charge-offs	161	17	177	122
Consumer Borrower [Member] | Commercial Portfolio Segment [Member]
Loans, Gross Charge-offs	246	134	3,140	394
Consumer Borrower [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	873,005		873,005		881,013
Loans, Gross Charge-offs	(0)	9	3	86
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member]
Current Fiscal Year	17,117		17,117		61,201
Fiscal Year before Current Fiscal Year	69,681		69,681		190,749
Two Years before Current Fiscal Year	191,133		191,133		217,146
Three Years before Current Fiscal Year	204,418		204,418		108,100
Four Years before Current Fiscal Year	100,793		100,793		33,102
More than Four Years before Current Fiscal Year	107,309		107,309		87,318
Revolving	0		0		284
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	690,451		690,451		697,900
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		9
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	9	(0)	9	9
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member] | Performing Financial Instruments [Member]
Current Fiscal Year	17,117		17,117		61,201
Fiscal Year before Current Fiscal Year	69,102		69,102		190,749
Two Years before Current Fiscal Year	191,133		191,133		217,146
Three Years before Current Fiscal Year	204,117		204,117		108,100
Four Years before Current Fiscal Year	100,781		100,781		33,102
More than Four Years before Current Fiscal Year	106,253		106,253		87,213
Revolving	0		0		284
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	688,503		688,503		697,795
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member] | Nonperforming Financial Instruments [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	579		579		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	301		301		0
Four Years before Current Fiscal Year	12		12		0
More than Four Years before Current Fiscal Year	1,056		1,056		105
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,948		1,948		105
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Current Fiscal Year	4,035		4,035		10,978
Fiscal Year before Current Fiscal Year	1,796		1,796		16,428
Two Years before Current Fiscal Year	4,680		4,680		1,573
Three Years before Current Fiscal Year	1,297		1,297		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,808		11,808		28,979
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		0
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member] | Performing Financial Instruments [Member]
Current Fiscal Year	4,035		4,035		10,978
Fiscal Year before Current Fiscal Year	1,796		1,796		16,428
Two Years before Current Fiscal Year	0		0		1,573
Three Years before Current Fiscal Year	1,297		1,297		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,128		7,128		28,979
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member] | Nonperforming Financial Instruments [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	4,680		4,680		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	0		0		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,680		4,680		0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Current Fiscal Year	2,712		2,712		7,470
Fiscal Year before Current Fiscal Year	6,392		6,392		6,835
Two Years before Current Fiscal Year	6,103		6,103		789
Three Years before Current Fiscal Year	1,199		1,199		1,184
Four Years before Current Fiscal Year	968		968		308
More than Four Years before Current Fiscal Year	1,536		1,536		1,341
Revolving	115,391		115,391		100,388
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	134,301		134,301		118,315
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			0		40
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	(0)	(0)	40
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Performing Financial Instruments [Member]
Current Fiscal Year	2,712		2,712		7,470
Fiscal Year before Current Fiscal Year	6,392		6,392		6,835
Two Years before Current Fiscal Year	6,103		6,103		789
Three Years before Current Fiscal Year	1,199		1,199		1,184
Four Years before Current Fiscal Year	968		968		308
More than Four Years before Current Fiscal Year	1,398		1,398		1,341
Revolving	114,041		114,041		100,388
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	132,813		132,813		118,315
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Nonperforming Financial Instruments [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	0		0		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	138		138		0
Revolving	1,350		1,350		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,488		1,488		0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member]
Current Fiscal Year	5,717		5,717		10,938
Fiscal Year before Current Fiscal Year	9,803		9,803		8,820
Two Years before Current Fiscal Year	7,943		7,943		5,157
Three Years before Current Fiscal Year	4,411		4,411		3,673
Four Years before Current Fiscal Year	2,865		2,865		1,461
More than Four Years before Current Fiscal Year	5,506		5,506		3,939
Revolving	200		200		1,831
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,445		36,445		35,819
Current Fiscal Year, Gross Charge-offs			0		0
Fiscal Year before Current Fiscal Year, Gross Charge-offs			0		0
Two Years before Current Fiscal Year, Gross Charge-offs			0		0
Three Years before Current Fiscal Year, Gross Charge-offs			0		0
Four Years before Current Fiscal Year, Gross Charge-offs			0		0
More than Four Years before Current Fiscal Year, Gross Charge-offs			3		77
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	(0)	(0)	3	77	77
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member] | Performing Financial Instruments [Member]
Current Fiscal Year	3,942		3,942		10,938
Fiscal Year before Current Fiscal Year	9,803		9,803		8,820
Two Years before Current Fiscal Year	7,643		7,643		5,157
Three Years before Current Fiscal Year	4,304		4,304		3,673
Four Years before Current Fiscal Year	2,865		2,865		1,461
More than Four Years before Current Fiscal Year	3,937		3,937		3,939
Revolving	200		200		50
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	32,694		32,694		34,038
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member] | Nonperforming Financial Instruments [Member]
Current Fiscal Year	1,775		1,775		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	300		300		0
Three Years before Current Fiscal Year	107		107		0
Four Years before Current Fiscal Year	0		0		0
More than Four Years before Current Fiscal Year	1,569		1,569		0
Revolving	0		0		1,781
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,751		3,751		1,781
Consumer Borrower [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	909,398		909,398		910,316
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member]
Current Fiscal Year	7,452		7,452		5,320
Fiscal Year before Current Fiscal Year	3,662		3,662		6,395
Two Years before Current Fiscal Year	5,004		5,004		980
Three Years before Current Fiscal Year	418		418		4,489
Four Years before Current Fiscal Year	2,243		2,243		1,554
More than Four Years before Current Fiscal Year	860		860		952
Revolving	16,754		16,754		9,613
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,393		36,393		29,303
Current Fiscal Year, Gross Charge-offs			0		4
Fiscal Year before Current Fiscal Year, Gross Charge-offs			6		2
Two Years before Current Fiscal Year, Gross Charge-offs			3		0
Three Years before Current Fiscal Year, Gross Charge-offs			150		31
Four Years before Current Fiscal Year, Gross Charge-offs			4		6
More than Four Years before Current Fiscal Year, Gross Charge-offs			11		8
Revolving, Gross Charge-offs			0		0
Loans, Gross Charge-offs	161	$ 8	174	$ 36	51
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member] | Performing Financial Instruments [Member]
Current Fiscal Year	7,452		7,452		5,320
Fiscal Year before Current Fiscal Year	3,662		3,662		6,395
Two Years before Current Fiscal Year	4,732		4,732		980
Three Years before Current Fiscal Year	418		418		4,489
Four Years before Current Fiscal Year	2,236		2,236		1,554
More than Four Years before Current Fiscal Year	849		849		952
Revolving	16,754		16,754		9,613
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,103		36,103		29,303
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member] | Nonperforming Financial Instruments [Member]
Current Fiscal Year	0		0		0
Fiscal Year before Current Fiscal Year	0		0		0
Two Years before Current Fiscal Year	272		272		0
Three Years before Current Fiscal Year	0		0		0
Four Years before Current Fiscal Year	7		7		0
More than Four Years before Current Fiscal Year	11		11		0
Revolving	0		0		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 290		$ 290		$ 0