Long-Term Debt (Details) - Long-Term Debt - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, including current portion	$ 4,307,000	$ 4,311,000
Less portion due within one year	3,776,000	3,776,000
Net long-term debt	531,000	535,000
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	2,247,000	2,247,000
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	$ 538,000	$ 542,000