Summary of Significant Accounting Policies (Unaudited) (Details)		12 Months Ended
	Jul. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) segment shares	Dec. 31, 2023 USD ($) shares
Summary of Significant Accounting Policies (Unaudited)
Common stock, per share | $ / shares	$ 10
Proceeds from Issuance of Common Stock	$ 54,594,730
Payments of Stock Issuance Costs	$ 2,400,000
Stock Issued During Period Shares New Issues To Charitable Foundation | shares	100,000
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP | shares	444,758
Percent of employee stock ownership plan stock over total common stock issued	8.00%
Common stock, issued (in shares) | shares	5,559,473	5,559,473	0
Common stock, outstanding (in shares) | shares		5,559,473	0
Net Proceeds From The Offering To The Bank	$ 26,097,000
Employee Stock Ownership Plan (ESOP), Loan Amount	4,447,580
Net Proceeds Of The Offering, Amount Retained	$ 21,400,000
Number of reporting segments | segment		1
Bank deposit accounts in excess of FDIC limit of $250,000 per institution		$ 27,065,000	$ 8,934,000
Deposit Limit		250,000	250,000
Reserve Requirement With Federal Reserve Bank		0	0
Held-to-maturity securities held		0	0
Trading securities held		0	0
Allowance for credit losses for available-for-sale securities		0	0
Accrued interest receivable on available-for-sale securities		348,000	168,000
Accrued interest receivable related to loans		1,619,000	1,589,000
Bank Owned Life Insurance		10,685,000	10,332,000
Appreciation in cash surrender value		353,000	312,000
Real Estate Owned		42,000	42,000
Interest and/or penalties recognized		0	0
Dilutive securities		0
Advertising and promotional expenses		$ 131,000	$ 258,000
Fifth District Saving Bank
Summary of Significant Accounting Policies (Unaudited)
Ownership Percentage	100.00%
Fifth District Saving Bank
Summary of Significant Accounting Policies (Unaudited)
Number of shares sold on the conversion | shares	5,459,473
Minimum | Building and Improvements
Summary of Significant Accounting Policies (Unaudited)
Estimated useful lives		15 years
Minimum | Furniture and Fixtures
Summary of Significant Accounting Policies (Unaudited)
Estimated useful lives		5 years
Maximum | Building and Improvements
Summary of Significant Accounting Policies (Unaudited)
Estimated useful lives		40 years
Maximum | Furniture and Fixtures
Summary of Significant Accounting Policies (Unaudited)
Estimated useful lives		10 years
Commercial loans
Summary of Significant Accounting Policies (Unaudited)
Percentage of loan balance purchased (in percent)		100.00%
Percentage of loan balance remitted to seller (in percent)		97.00%
Number Of Days Of delinquency Considered For Replacement Of delinquent Loans With Performing Loans By Seller		90 days
Percentage of loan balance that the seller establishes reserve deposit account (in percent)		3.00%