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Rental Income - Additional information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Leases [Abstract]        
Lease income $ 284,000 $ 284,000 $ 851,000 $ 708,000
Lease agreement expiration date     May 31, 2024  
Option to extend     The initial term of the lease agreement expired on May 31, 2024 and was extended for an additional eighty-four months, commencing June 1, 2024 and ending May 31, 2031.