Note 9 - GKCE Acquisition - Tangible Assets Acquired (Details) - Gamma Knife Center Ecuador S.A. (GKCE) [Member]	Jun. 12, 2020 USD ($)
Tangible assets	$ 723,000
Building [Member]
Tangible assets	$ 385,000
Useful life (Year)	20 years
Land [Member]
Tangible assets	$ 19,000
Medical Equipment [Member]
Tangible assets	$ 302,000
Useful life (Year)	2 years
Property, Plant and Equipment, Other Types [Member]
Tangible assets	$ 17,000
Useful life (Year)	2 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration