Note 8 - Commitments	3 Months Ended
Mar. 31, 2026
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 8. Commitments As of March 31, 2026, the Company had commitments to purchase and install two Esprit and two LINAC systems. The Esprit upgrades and one LINAC installation are anticipated to occur in late 2026 or later at existing customer sites. The remaining LINAC is reserved for a future customer site. Total Gamma Knife and LINAC commitments as of March 31, 2026 were $7,884,000. There are no deposits on the condensed consolidated balance sheets related to these commitments as of March 31, 2026 and December 31, 2025, nor are there any penalties if the Company decides to not execute on these commitments. Although the Company’s current intent is to finance substantially all of these commitments, there can be no assurance that financing will be available for the Company’s current or future projects, or at terms that are acceptable to the Company. However, the Company currently has cash on hand of $5,223,000. As of March 31, 2026, the Company had commitments to service and maintain its Gamma Knife, LINAC, and PBRT equipment. The service commitments are carried out via contracts with Mevion, Elekta, Solutech, and Mobius Imaging, LLC. The Company’s commitment to purchase one LINAC system also includes a 5-year agreement to service the equipment. Total service commitments as of March 31, 2026 were $5,705,000. The service contracts are paid monthly, as service is performed. The Company believes that cash flow from cash on hand and operations will be sufficient to cover these payments.

Note 8 - Commitments

3 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Text Block]

Note 8. Commitments

As of March 31, 2026, the Company had commitments to purchase and install two Esprit and two LINAC systems. The Esprit upgrades and one LINAC installation are anticipated to occur in late 2026 or later at existing customer sites. The remaining LINAC is reserved for a future customer site. Total Gamma Knife and LINAC commitments as of March 31, 2026 were $7,884,000. There are no deposits on the condensed consolidated balance sheets related to these commitments as of March 31, 2026 and December 31, 2025, nor are there any penalties if the Company decides to not execute on these commitments. Although the Company’s current intent is to finance substantially all of these commitments, there can be no assurance that financing will be available for the Company’s current or future projects, or at terms that are acceptable to the Company. However, the Company currently has cash on hand of $5,223,000.

As of March 31, 2026, the Company had commitments to service and maintain its Gamma Knife, LINAC, and PBRT equipment. The service commitments are carried out via contracts with Mevion, Elekta, Solutech, and Mobius Imaging, LLC. The Company’s commitment to purchase one LINAC system also includes a 5-year agreement to service the equipment. Total service commitments as of March 31, 2026 were $5,705,000. The service contracts are paid monthly, as service is performed. The Company believes that cash flow from cash on hand and operations will be sufficient to cover these payments.