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Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Abstract]
Savings and checking accounts at major U.S. financial institutions	$ 367	$ 1,312
U.S. Treasury securities money market fund	8,189	0
Total	$ 8,556	$ 1,312

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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