The Company and its Significant Accounting Policies, Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Current Assets [Abstract]
Operating lease right-of-use asset	$ 20,000	$ 59,000
Total leased assets	20,000	59,000
Current Liabilities [Abstract]
Operating lease right-of-use liability - current portion	23,000	43,000
Long-term Liabilities [Abstract]
Operating lease right-of-use liability - net of current portion	0	23,000
Total lease liabilities	23,000	66,000
Lease Cost [Abstract]
Net lease cost	41,000	34,000
Operating lease [Abstract]
2023	24,000
Total	24,000
Less amount representing interest	0
Present value of lease liabilities	$ 24,000	66,000
Discount rate	5.85%
Selling, General and Administrative Expenses [Member]
Lease Cost [Abstract]
Operating lease cost	$ 41,000	41,000
Interest Expense [Member]
Lease Cost [Abstract]
Finance lease cost, interest on lease liabilities	0	1,000
Interest Income - Sales-type Sublease [Member]
Lease Cost [Abstract]
Sublease income	$ 0	$ 8,000