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Loans and Allowance for Credit Losses - Schedule of Information Regarding Credit Exposure (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		$ 178		$ 189
Loans		1,418,590		1,410,653
Total nonaccrual loans		1,715		1,723	$ 1,596
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		523		149,181
Financing Receivable, Prior year		2,000		134,289
Financing Receivable, Two year prior		3,723		107,033
Financing Receivable, Three year prior		3,047		71,754
Financing Receivable, Four year prior		1,696		43,846
Prior		22,521		137,698
Term Loans Total		33,510		643,801
Revolving Loans		8,440		143,120
Grand Total		41,950		786,921
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	0
Current year-to-date gross write-offs, Two year prior		0	[1]	0
Current year-to-date gross write-offs, Three year prior		0	[1]	0
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		0	[1]	0
Current year-to-date gross write-offs, Term Loans Total		0	[1]	0
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		0	[1]	0
Loans		41,950		49,210
Agricultural [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		523		149,181
Financing Receivable, Prior year		2,000		134,289
Financing Receivable, Two year prior		3,723		107,033
Financing Receivable, Three year prior		3,047		71,754
Financing Receivable, Four year prior		1,696		43,846
Prior		22,303		136,361
Term Loans Total		33,292		642,464
Revolving Loans		8,440		143,120
Grand Total		41,732		785,584
Agricultural [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		176
Prior		218		54
Term Loans Total		218		230
Revolving Loans		0		0
Grand Total		218		230
Agricultural [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Agricultural [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Agricultural [Member] | Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		4,323		5,015
Financing Receivable, Prior year		27,221		4,088
Financing Receivable, Two year prior		42,428		3,078
Financing Receivable, Three year prior		20,151		1,788
Financing Receivable, Four year prior		9,924		7,204
Prior		19,119		18,530
Term Loans Total		123,166		39,703
Revolving Loans		108,056		9,507
Grand Total		231,222		49,210
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	0
Current year-to-date gross write-offs, Two year prior		0	[1]	0
Current year-to-date gross write-offs, Three year prior		0	[1]	0
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		1	[1]	0
Current year-to-date gross write-offs, Term Loans Total		1	[1]	0
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		1	[1]	0
Loans		231,222		229,915
Total nonaccrual loans				1
Commercial and Industrial [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		4,323		5,015
Financing Receivable, Prior year		27,221		4,088
Financing Receivable, Two year prior		42,317		3,078
Financing Receivable, Three year prior		20,127		1,788
Financing Receivable, Four year prior		9,891		7,028
Prior		18,852		18,476
Term Loans Total		122,731		39,473
Revolving Loans		107,930		9,507
Grand Total		230,661		48,980
Commercial and Industrial [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		111		0
Financing Receivable, Three year prior		24		0
Financing Receivable, Four year prior		33		0
Prior		121		1,337
Term Loans Total		289		1,337
Revolving Loans		109		0
Grand Total		398		1,337
Commercial and Industrial [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		146		4
Term Loans Total		146		4
Revolving Loans		17		0
Grand Total		163		4
Commercial and Industrial [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Commercial and Industrial [Member] | Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Construction Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		960		2,507
Financing Receivable, Prior year		1,518		2,719
Financing Receivable, Two year prior		148		552
Financing Receivable, Three year prior		542		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		3,168		5,778
Revolving Loans		14,722		15,158
Grand Total		17,890		20,936
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	0
Current year-to-date gross write-offs, Two year prior		0	[1]	0
Current year-to-date gross write-offs, Three year prior		0	[1]	0
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		0	[1]	0
Current year-to-date gross write-offs, Term Loans Total		0	[1]	0
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total	[1]	0
Loans		17,890		20,936
Construction Real Estate [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		960		2,507
Financing Receivable, Prior year		1,518		2,719
Financing Receivable, Two year prior		148		552
Financing Receivable, Three year prior		542		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		3,168		5,778
Revolving Loans		14,722		15,158
Grand Total		17,890		20,936
Construction Real Estate [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0
Revolving Loans		0
Grand Total		0
Construction Real Estate [Member] | Nonaccrual Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		2,210		9,775
Financing Receivable, Prior year		9,053		13,876
Financing Receivable, Two year prior		11,434		6,771
Financing Receivable, Three year prior		6,202		2,849
Financing Receivable, Four year prior		2,487		1,260
Prior		2,100		1,202
Term Loans Total		33,486		35,733
Revolving Loans		782		808
Grand Total		34,268		36,541
Current year-to-date gross write-offs, Current year		0	[1]	8
Current year-to-date gross write-offs, Prior year		1	[1]	24
Current year-to-date gross write-offs, Two year prior		33	[1]	11
Current year-to-date gross write-offs, Three year prior		1	[1]	28
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		1	[1]	1
Current year-to-date gross write-offs, Term Loans Total		36	[1]	72
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		36	[1]	72
Loans		34,268		36,541
Total nonaccrual loans		200
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		2,210		9,775
Financing Receivable, Prior year		9,011		13,876
Financing Receivable, Two year prior		11,277		6,771
Financing Receivable, Three year prior		6,201		2,849
Financing Receivable, Four year prior		2,487		1,260
Prior		2,100		1,202
Term Loans Total		33,286		35,733
Revolving Loans		782		808
Grand Total		34,068		36,541
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Consumer Portfolio Segment [Member] | Nonaccrual Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		42		0
Financing Receivable, Two year prior		157		0
Financing Receivable, Three year prior		1		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		200		0
Revolving Loans		0		0
Grand Total		200		0
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		10,189		23,600
Financing Receivable, Prior year		151,579		45,489
Financing Receivable, Two year prior		127,964		23,490
Financing Receivable, Three year prior		105,078		10,537
Financing Receivable, Four year prior		70,301		9,287
Prior		176,548		11,950
Term Loans Total		641,659		124,353
Revolving Loans		153,046		105,562
Grand Total		794,705		229,915
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	55
Current year-to-date gross write-offs, Two year prior		0	[1]	30
Current year-to-date gross write-offs, Three year prior		0	[1]	71
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		0	[1]	2
Current year-to-date gross write-offs, Term Loans Total		0	[1]	158
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		0	[1]	158
Loans		794,705		786,921
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		10,189		23,600
Financing Receivable, Prior year		151,579		45,489
Financing Receivable, Two year prior		127,964		23,462
Financing Receivable, Three year prior		105,078		10,502
Financing Receivable, Four year prior		70,301		9,214
Prior		176,176		11,882
Term Loans Total		641,287		124,149
Revolving Loans		153,046		105,559
Grand Total		794,333		229,708
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		28
Financing Receivable, Three year prior		0		35
Financing Receivable, Four year prior		0		73
Prior		372		64
Term Loans Total		372		200
Revolving Loans		0		3
Grand Total		372		203
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Commercial Real Estate Portfolio Segment [Member] | Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		7,133		54,231
Financing Receivable, Prior year		52,481		65,148
Financing Receivable, Two year prior		63,806		29,127
Financing Receivable, Three year prior		28,731		16,391
Financing Receivable, Four year prior		15,992		12,556
Prior		51,088		40,756
Term Loans Total		219,231		218,209
Revolving Loans		49,292		49,521
Grand Total		268,523		267,730
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	0
Current year-to-date gross write-offs, Two year prior		0	[1]	0
Current year-to-date gross write-offs, Three year prior		0	[1]	0
Current year-to-date gross write-offs, Four year prior	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		0	[1]	0
Current year-to-date gross write-offs, Term Loans Total		0	[1]	0
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		0	[1]	0
Loans		268,523		267,730
Total nonaccrual loans		1,515		1,722	$ 1,596
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		7,133		54,231
Financing Receivable, Prior year		52,345		64,768
Financing Receivable, Two year prior		63,307		28,301
Financing Receivable, Three year prior		28,034		16,391
Financing Receivable, Four year prior		15,992		12,556
Prior		50,977		40,270
Term Loans Total		217,788		216,517
Revolving Loans		49,220		49,491
Grand Total		267,008		266,008
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Residential Portfolio Segment [Member] | Nonaccrual Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		136		380
Financing Receivable, Two year prior		499		826
Financing Receivable, Three year prior		697		0
Financing Receivable, Four year prior		0		0
Prior		111		486
Term Loans Total		1,443		1,692
Revolving Loans		72		30
Grand Total		1,515		1,722
Loans to other financial institutions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		30,032		19,400
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		30,032		19,400
Revolving Loans		0		0
Grand Total		30,032		19,400
Current year-to-date gross write-offs, Current year		0	[1]	0
Current year-to-date gross write-offs, Prior year		0	[1]	26
Current year-to-date gross write-offs, Two year prior		0	[1]	0
Current year-to-date gross write-offs, Three year prior		0	[1]	0
Current year-to-date gross write-offs, Four year prior		0	[1]	0
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total		0	[1]	1
Current year-to-date gross write-offs, Term Loans Total		0	[1]	27
Current year-to-date gross write-offs, Revolving Loans		0	[1]	0
Current year-to-date gross write-offs, Grand Total		0	[1]	27
Loans		30,032		19,400
Loans to other financial institutions [Member] | Performing Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		30,032		19,400
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		30,032		19,400
Revolving Loans		0		0
Grand Total		30,032		19,400
Loans to other financial institutions [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Loans to other financial institutions [Member] | Nonaccrual Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		0		0
Financing Receivable, Prior year		0		0
Financing Receivable, Two year prior		0		0
Financing Receivable, Three year prior		0		0
Financing Receivable, Four year prior		0		0
Prior		0		0
Term Loans Total		0		0
Revolving Loans		0		0
Grand Total		0		0
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		15,035		177,796
Financing Receivable, Prior year		180,800		183,866
Financing Receivable, Two year prior		174,115		133,601
Financing Receivable, Three year prior		128,276		84,079
Financing Receivable, Four year prior		81,921		60,337
Prior		218,188		168,178
Term Loans Total		798,335		807,857
Revolving Loans		269,542		258,189
Grand Total		1,067,877		1,066,046
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Current year		40,335		85,913
Financing Receivable, Prior year		63,052		81,743
Financing Receivable, Two year prior		75,388		36,450
Financing Receivable, Three year prior		35,475		19,240
Financing Receivable, Four year prior		18,479		13,816
Prior		53,188		41,958
Term Loans Total		285,917		279,120
Revolving Loans		64,796		65,487
Grand Total		$ 350,713		$ 344,607
[1] It is noted that write-offs in the table above do not include checking account write offs. Checking account write-offs during the first three months of 2024 were $87,000 or an annualized $348,000 compared to $480,000 during the full year 2023.

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