Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2020
Income Taxes
Income tax benefit	$ (35,000)	$ (4,000)
Deferred income taxes	36,000
Operating loss carryforwards	$ 103,600,000		$ 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	$ 34,500	$ 4,500
New Jersey state income tax
Income Taxes
Operating loss carryforwards	25,900,000
Domestic Tax Authority
Income Taxes
Operating loss carryforwards	100,400,000
Domestic Tax Authority | R & D credit carryforwards
Income Taxes
Tax Credit Carryforward Amount	$ 11,100,000