Income Taxes, Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Components of pretax income (loss) and difference between income taxes computed at statutory federal rate and provision for income taxes [Abstract]
Income (loss) before income taxes	$ (5,270)	$ (3,472)
Tax expense (benefit) [Abstract]
Tax at statutory federal rate	(1,107)	(729)
State income taxes	(157)	(110)
Permanent items, tax credits and other adjustments	2	0
Change in valuation allowance	1,263	840
Income tax expense (benefit)	$ 1	$ 1