Fair Value Measurements (Details) - Schedule of U.S. government securities with the below market values and maturity dates - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Market value of U.S. government securities portfolio
Total Market value of investment in U.S. government securities	$ 135,976,000	$ 143,787,000
Maturing in 2023 [Member]
Market value of U.S. government securities portfolio
Total Market value of investment in U.S. government securities	67,245,000	106,873,000
Maturing in 2024 [Member]
Market value of U.S. government securities portfolio
Total Market value of investment in U.S. government securities	64,505,000	36,506,000
Maturing in 2025 [Member]
Market value of U.S. government securities portfolio
Total Market value of investment in U.S. government securities	3,918,000
Accrued Interest [Member]
Market value of U.S. government securities portfolio
Total Market value of investment in U.S. government securities	$ 308,000	$ 408,000