Note B - The Southern California Regional Gamma Knife Center - Financial Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Patient revenue	$ 0	$ 0	$ 0	$ 0
Current assets	2,241,000		2,241,000		$ 527,000
Net loss	(435,000)	$ (434,000)	(747,000)	(542,000)
Income (Loss) from Equity Method Investments			4,000	(266,000)
Total assets	3,032,000		3,032,000		1,321,000
Current liabilities	976,000		976,000		607,000
Equity	1,998,000		1,998,000		645,000
Total liabilities and equity	3,032,000		3,032,000		1,321,000
NeuroPartners LLC and Corona Gamma Knife, LLC (“CGK”) [Member]
Income (Loss) from Equity Method Investments			0	(63,000)
NeuroPartners LLC and Corona Gamma Knife, LLC (“CGK”) [Member]
Patient revenue			0	136,000
Current assets	0		0		363,000
Net loss			0	$ (75,000)
Noncurrent assets	0		0		0
Total assets	0		0		363,000
Current liabilities	0		0		653,000
Noncurrent liabilities	0		0		0
Equity	0		0		(290,000)
Total liabilities and equity	$ 0		$ 0		$ 363,000