Long-Term Debt (Details) - Long-term debt - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt, including current portion	$ 4,268,000	$ 4,268,000
Less portion due within one year	3,768,000	3,768,000
Net long-term debt	500,000	500,000
Total debt	4,268,000	4,268,000
Less deferred financing costs and debt discount
8¼% Limited Convertible Senior Subordinated Notes Due 2012 [Member]
Debt Instrument [Line Items]
Long-term debt, including current portion	302,000	302,000
9½% Subordinated Debentures Due 2012 [Member]
Debt Instrument [Line Items]
Long-term debt, including current portion	220,000	220,000
Revolving Credit Line - Related Party [Member]
Debt Instrument [Line Items]
Long-term debt, including current portion	2,246,000	2,246,000
Related Party Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, including current portion	1,000,000	1,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, including current portion	$ 500,000	$ 500,000