Loans and Allowance for Credit Losses - Changes in the Allowance (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 1,166,431	$ 1,190,255	$ 1,142,629	$ 1,126,422	$ 1,126,422
Provision for Credit Loss	43,399	6,097	92,088	69,930
Charge-offs	(27,840)		(53,717)	0	(80,557)
Recoveries	790		1,780	0
Ending Balance	1,182,780	1,196,352	1,182,780	1,196,352	1,142,629
Real estate \| One to four family residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	605,128	739,393	601,094	639,578	639,578
Provision for Credit Loss	(71,543)	(46,277)	(67,509)	53,538
Charge-offs			0	0	(686)
Recoveries			0	0
Ending Balance	533,585	693,116	533,585	693,116	601,094
Real estate \| Home equity
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9,081	12,660	9,156	11,020	11,020
Provision for Credit Loss	(1,122)	(1,735)	(1,197)	(95)
Charge-offs			0	0	0
Recoveries			0	0
Ending Balance	7,959	10,925	7,959	10,925	9,156
Real estate \| Equity line of credit
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	35,920	33,051	32,124	28,634	28,634
Provision for Credit Loss	(1,110)	2,853	2,686	7,270
Charge-offs			0	0	0
Recoveries			0	0
Ending Balance	34,810	35,904	34,810	35,904	32,124
Real estate \| Construction
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	136,336	99,470	136,781	73,444	73,444
Provision for Credit Loss	6,934	21,162	6,489	47,188
Charge-offs			0	0	0
Recoveries			0	0
Ending Balance	143,270	120,632	143,270	120,632	136,781
Real estate \| Multi-family
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,875	7,827	4,951	6,251	6,251
Provision for Credit Loss	(760)	(1,505)	164	71
Charge-offs			0	0	0
Recoveries			0	0
Ending Balance	5,115	6,322	5,115	6,322	4,951
Real estate \| Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	20,312	24,803	19,727	30,624	30,624
Provision for Credit Loss	(423)	(1,510)	162	(7,331)
Charge-offs			0	0	0
Recoveries			0	0
Ending Balance	19,889	23,293	19,889	23,293	19,727
Commercial installment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	49,882	38,567
Provision for Credit Loss	(2,341)	(1,210)
Charge-offs			0		0
Ending Balance	47,541	37,357	47,541	37,357
Commercial installment \| Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance			35,804	42,629	42,629
Provision for Credit Loss			11,737	(5,272)
Charge-offs			0	0
Recoveries			0	0
Ending Balance	47,541	37,357	47,541	37,357	35,804
Consumer \| Marine and recreational
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	280,267	207,041	277,395	259,197	259,197
Provision for Credit Loss	108,862	35,853	137,611	(16,303)
Charge-offs	(27,840)		(53,717)	0	(79,871)
Recoveries			0	0
Ending Balance	361,289	242,894	361,289	242,894	277,395
Consumer \| Other consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	23,630	27,443	25,597	35,045	35,045
Provision for Credit Loss	4,902	(1,534)	1,945	(9,136)
Charge-offs			0	0	0
Recoveries	790		1,780	0
Ending Balance	$ 29,322	$ 25,909	$ 29,322	$ 25,909	$ 25,597

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

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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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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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 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: 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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+ 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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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