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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Amount of unamortized loan commitment, origination, and other costs (fees) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Loans and Allowance for Credit Losses - By Major Category (Details) - USD ($)	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Loans and Allowance for Credit Losses
Loans, gross	$ 187,216,288		$ 190,713,722
Allowance for credit losses	(1,182,780)	$ (1,166,431)	(1,142,629)	$ (1,196,352)	$ (1,190,255)	$ (1,126,422)
Unearned loan fees	(162,585)		(155,572)
Loans, net	185,870,923		189,415,521
Real estate \| One to four family residential
Loans and Allowance for Credit Losses
Loans, gross	125,354,683		129,672,893
Allowance for credit losses	(533,585)	(605,128)	(601,094)	(693,116)	(739,393)	(639,578)
Real estate \| Home equity
Loans and Allowance for Credit Losses
Loans, gross	1,869,908		1,975,201
Allowance for credit losses	(7,959)	(9,081)	(9,156)	(10,925)	(12,660)	(11,020)
Real estate \| Equity line of credit
Loans and Allowance for Credit Losses
Loans, gross	8,177,998		6,930,038
Allowance for credit losses	(34,810)	(35,920)	(32,124)	(35,904)	(33,051)	(28,634)
Real estate \| Construction
Loans and Allowance for Credit Losses
Loans, gross	12,786,675		12,175,080
Allowance for credit losses	(143,270)	(136,336)	(136,781)	(120,632)	(99,470)	(73,444)
Real estate \| Multi-family
Loans and Allowance for Credit Losses
Loans, gross	1,201,689		1,067,972
Allowance for credit losses	(5,115)	(5,875)	(4,951)	(6,322)	(7,827)	(6,251)
Real estate \| Commercial
Loans and Allowance for Credit Losses
Loans, gross	1,886,056		1,936,965
Allowance for credit losses	(19,889)	(20,312)	(19,727)	(23,293)	(24,803)	(30,624)
Commercial installment
Loans and Allowance for Credit Losses
Loans, gross	3,694,907		3,505,245
Allowance for credit losses	(47,541)	(49,882)		(37,357)	(38,567)
Commercial installment \| Commercial
Loans and Allowance for Credit Losses
Allowance for credit losses	(47,541)		(35,804)	(37,357)		(42,629)
Consumer \| Marine and recreational
Loans and Allowance for Credit Losses
Loans, gross	29,664,230		30,242,927
Allowance for credit losses	(361,289)	(280,267)	(277,395)	(242,894)	(207,041)	(259,197)
Consumer \| Other consumer
Loans and Allowance for Credit Losses
Loans, gross	2,580,142		3,207,401
Allowance for credit losses	$ (29,322)	$ (23,630)	$ (25,597)	$ (25,909)	$ (27,443)	$ (35,045)