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Loans and Allowance for Loan Losses - Allowance for Loan Losses Activity by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	$ 44,884	$ 42,674	$ 42,674
Loans charged-off	(613)	(634)	(3,360)
Recoveries of loans charged-off	310	347
Net loans (charged-off) recovered	(303)	(287)
Provision for (reversal of) loan losses	42	1,170
Balance at end of period	44,623	43,557	44,884
Construction Real Estate Loans
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	3,958	5,287	5,287
Loans charged-off	0	0	(24)
Recoveries of loans charged-off	0	0
Net loans (charged-off) recovered	0	0
Provision for (reversal of) loan losses	(71)	(367)
Balance at end of period	3,887	4,920	3,958
1-4 Family Residential Real Estate Loans
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	2,780	2,840	2,840
Loans charged-off	(13)	(22)	(261)
Recoveries of loans charged-off	8	11
Net loans (charged-off) recovered	(5)	(11)
Provision for (reversal of) loan losses	(66)	(61)
Balance at end of period	2,709	2,768	2,780
Commercial Real Estate Loans
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	35,526	32,266	32,266
Loans charged-off	0	0	(78)
Recoveries of loans charged-off	5	3
Net loans (charged-off) recovered	5	3
Provision for (reversal of) loan losses	(801)	624
Balance at end of period	34,730	32,893	35,526
Commercial loans
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	2,448	2,086	2,086
Loans charged-off	(156)	(151)	(1,173)
Recoveries of loans charged-off	102	56
Net loans (charged-off) recovered	(54)	(95)
Provision for (reversal of) loan losses	734	783
Balance at end of period	3,128	2,774	2,448
Municipal loans
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	16	19	19
Loans charged-off	0	0	0
Recoveries of loans charged-off	0	0
Net loans (charged-off) recovered	0	0
Provision for (reversal of) loan losses	(2)	0
Balance at end of period	14	19	16
Loans to individuals
Allowances for Loan Losses [Roll Forward]
Balance at beginning of period	156	176	176
Loans charged-off	(444)	(461)	(1,824)
Recoveries of loans charged-off	195	277
Net loans (charged-off) recovered	(249)	(184)
Provision for (reversal of) loan losses	248	191
Balance at end of period	$ 155	$ 183	$ 156

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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+ References

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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-Section 50
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-Publisher FASB
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- Definition

Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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