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Cash and Cash Equivalents (Tables)
6 Months Ended
Jun. 30, 2024
Cash and Cash Equivalents [Abstract]  
Schedule of Cash and Cash Equivalents
Cash and cash equivalents consisted of the following (in thousands):
June 30,
2024
December 31,
2023
Savings and checking accounts at major U.S. financial institutions$434 $367 
U.S. Treasury securities money market fund2,807 8,189 
Total$3,241 $8,556