Business and Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Business and Significant Accounting Policies
Cash and cash equivalents held in brokerage accounts and foreign banks	$ 380,000		$ 380,000
Cash and cash equivalents money market fund held ia a brokerage account	10,000		$ 10,000
Maturities period of current assets in United states treasury securities			30 days to 8 months
Current assets in United States treasury securities	$ 2,077,000		$ 2,077,000
Potentially dilutive shares related to outstanding common stock options	5,341,250	5,440,000	5,340,000	5,390,000