Income Taxes, Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
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	$ (3,472)	$ (5,207)
Tax expense (benefit) [Abstract]
Tax at statutory federal rate	(729)	(1,094)
State income taxes	(110)	(445)
Change in valuation allowance	840	1,540
Income tax expense (benefit)	$ 1	$ 1