Income Taxes (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2020
Income Taxes
Income tax benefit	$ 52,000	$ 17,000	$ (4,000)
Deferred income taxes	51,000	15,000	0
Operating loss carryforwards	103,400,000	$ 103,400,000		$ 100,000,000
Tax credit carryforward, limitations on use		net operating losses generated in tax years beginning after December 31, 2017 have an unlimited carryforward period, and the amount of net operating loss allowed to be utilized each year is limited to 80% of taxable income
New Jersey state income tax
Income Taxes
Income tax benefit		$ 17,000	$ 4,000
New Jersey state income tax
Income Taxes
Operating loss carryforwards	25,600,000	25,600,000
Domestic Tax Authority
Income Taxes
Operating loss carryforwards	100,200,000	100,200,000
Domestic Tax Authority | R & D credit carryforwards
Income Taxes
Tax Credit Carryforward Amount	$ 11,100,000	$ 11,100,000