Aggregate Principal Amounts due on Mortgage and Construction Notes Payable by Unconsolidated LLC's/LPs Accounted Under Equity Method (Parenthetical) (Detail) - Grayson Properties Two L P - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Schedule Of Equity Method Investments [Line Items]
Construction loan		$ 5.7
Letters of Credit Terminated Amount	$ 3.1