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Note 6 - Leases (Details Textual)				1 Months Ended	7 Months Ended	12 Months Ended		13 Months Ended	23 Months Ended
	Nov. 30, 2024 USD ($) ft² a	May 07, 2024 USD ($) ft²	Nov. 03, 2021 USD ($) ft²	Feb. 28, 2025 USD ($)	Jul. 31, 2024 USD ($) m²	Dec. 31, 2024 USD ($) ft² a	Dec. 31, 2023 USD ($)	Jan. 31, 2024 USD ($) ft²	Nov. 30, 2024 USD ($) ft² a
Sublease Income						$ 40,000	$ 129,000
Operating Lease, Right-of-Use Asset						1,015,000	57,000
Operating Lease, Liability						1,726,000
Operating Lease, Expense						$ 427,000	234,000
Condominium Space for Gamma Knife Facility in Guayaquil, Ecuador [Member]
Area of Real Estate Property (Square Foot) | ft²						864
Land and Parking Spaces for Gamma Knife Facility in Guayaquil, Ecuador [Member]
Area of Real Estate Property (Square Foot) | a						10,135
RHODE ISLAND
Number of Stand-Alone Facilities						2
Minimum [Member]
Lessee, Operating Lease, Discount Rate						4.00%
Lessee, Operating Lease, Remaining Lease Term (Year)						5 years
Maximum [Member]
Lessee, Operating Lease, Discount Rate						8.00%
Lessee, Operating Lease, Remaining Lease Term (Year)						17 years
Related Party [Member]
Sublease Income						$ 40,000	$ 129,000
RI Companies [Member]
Business Acquisition, Percentage of Voting Interests Acquired		60.00%
Number of Single-unit Facilities		3
Lease Agreement for New Corporate Office [Member]
Area of Real Estate Property (Square Foot) | ft²			900
Operating Lease, Monthly Expense			$ 4,500
Sublease Office in San Francisco, California [Member]
Area of Real Estate Property (Square Foot) | ft²			3,253
Operating Lease, Monthly Expense			$ 22,011
Lessee, Operating Sublease, Monthly Income			$ 16,195
Woonsocket Operating Lease [Member]
Area of Real Estate Property (Square Foot) | ft²		1,950
Corporate Office in San Francisco [Member]
Area of Real Estate Property (Square Foot) | a	900								900
Operating Lease, Monthly Expense									$ 4,500
Small Office Sublease in San Francisco [Member]
Area of Real Estate Property (Square Foot) | ft²	80								80
Operating Lease, Monthly Expense	$ 1,003
Operating Lease, Right-of-Use Asset	15,000								$ 15,000
Operating Lease, Liability	$ 15,000								$ 15,000
Small Office Sublease in Downers Grove [Member] | Subsequent Event [Member]
Operating Lease, Monthly Expense				$ 2,300
Clinic Space in Woonsocket, RI [Member] | RI Companies [Member]
Area of Real Estate Property (Square Foot) | ft²		1,950
Woonsocket Ground Lease [Member] | RI Companies [Member]
Operating Lease, Annual Prepayment		$ 44,000
Facility in Warwick, RI [Member] | RI Companies [Member]
Area of Real Estate Property (Square Foot) | ft²		15,019
Operating Lease, Monthly Expense		$ 32,790
Stand-alone Facility in Lima, Peru [Member]
Area of Real Estate Property (Square Foot) | ft²								1,600
Operating Lease, Monthly Expense								$ 8,850
Radiation Therapy Facility in Puebla, Mexico [Member]
Area of Real Estate Property (Square Foot) | m²					536
Operating Lease, Monthly Expense					$ 1,800
Operating Lease, Right-of-Use Asset					149,000
Operating Lease, Liability					$ 149,000

X

- Definition

monthly amount of sublease income for operating lease.

+ References

No definition available.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-SubTopic 10
-Section 50
-Paragraph 2
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Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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