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Significant Accounting Policies - Investment in Marketable Securities - Additional Information (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
security
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
security
Sep. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Real Estate [Line Items]          
Proceeds from sale of marketable securities $ 0 $ 0 $ 0 $ 0  
Equity marketable securities 0   0   $ 0
Commercial mortgage-backed securities          
Real Estate [Line Items]          
Cost basis of commercial mortgage backed securities $ 16,900,000   $ 16,900,000   11,500,000
Number of securities in unrealized gain position | security 1   1    
Unrealized gain     $ 100,000    
Fair market value $ 5,400,000   5,400,000    
Unrealized loss     900,000   1,900,000
Fair value of security in a continuous unrealized loss position for less than 12 months $ 11,100,000   $ 11,100,000   $ 9,600,000
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, number of positions | security 2   2    
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions | security 1   1