Income Taxes, Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 0	$ 0	$ 0
Increases related to prior year tax positions	1,310	0	0
Increases related to current year tax positions	69	0	0
Ending balance	1,379	0	0
Accrued interest or penalties associated with uncertain tax positions	0	0
Interest or penalties associated with uncertain tax positions	0	0	0
Tax benefit from participation in research and development tax credit exchange program	200	200	$ 900
Prepaid Expenses and Other Current Assets [Member]
Income Taxes [Abstract]
Research and development tax credit receivables	$ 200	$ 200