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Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Cash and Cash Equivalents [Abstract]    
Savings and checking accounts at major U.S. financial institutions $ 434 $ 367
U.S. Treasury securities money market fund 2,807 8,189
Total $ 3,241 $ 8,556 [1]
[1] Derived from audited financial statements