Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Perpetual Federal Savings Bank [Member]
Income Taxes [Line Items]
Deferred taxes business combination allocated to additional paid in capital			$ 2,779,000
Unrecognized deferred taxes	$ 1,040,000
Peoples Federal Savings and Loan [Member]
Income Taxes [Line Items]
Operating loss carryforwards	2,000	$ 2,600
Operating loss carryforward at acquisition	$ 2,789,124
Deferred taxes business combination allocated to additional paid in capital		$ 2,174,000