Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Computed "expected" tax-benefit - Federal	$ (3,045)	$ (2,124)
Computed "expected" tax-benefit - State	(931)	(616)
Adjustment of "expected" tax-benefit to actual	0	0
Meals, entertainment and other	0	0
Non-deductible stock-based compensation	32	32
State tax rate adjustment	932	(1,221)
Federal and state net operating loss adjustment	0	0
Change in valuation allowance	3,012	3,929
Income tax expense	$ 0	$ 0