Accounts Payable and Accrued Expenses (Schedule of Accounts Payable and Accrued Expenses) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts Payable and Accrued Expenses
Accounts payable	$ 8,759	$ 6,322
Accrued research and development	561	4,118
Accrued compensation	984	2,838
Other	1,757	739
Total accounts payable and accrued expenses	12,061	$ 14,017
Accrued consideration for the uBriGene Asset Purchase Agreement	$ 1,300