Condensed Parent Company Only Financial Information - CONDENSED BALANCE SHEET (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and Cash Equivalents	$ 37,916	$ 19,306
Other Assets	1,097	1,002
Total Assets	527,307	480,797
Liabilities and Stockholders' Equity
Stockholders' Equity	125,775	77,798	$ 76,069
Total Liabilities and Stockholders' Equity	527,307	$ 480,797
Fifth District Bancorp, Inc | Fifth District Bancorp, Inc
Assets
Cash and Cash Equivalents	21,848
Investment in Subsidiary	103,866
Other Assets	263
Total Assets	125,977
Liabilities and Stockholders' Equity
Due to Subsidiary	202
Stockholders' Equity	125,775
Total Liabilities and Stockholders' Equity	$ 125,977