v3.26.3
Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Jun. 30, 2026
Notes Tables  
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
  June 30, 2026  June 30, 2025 
Deferred Revenue $99  $143 
Schedule of Product Warranty Liability [Table Text Block]

(In thousands)

 

Warranty Provision

 

Balance as of June 30, 2024

 $184 

Accruals for new warranties issued

  75 

Settlements made

  (62)

Balance as of June 30, 2025

  197 

Accruals for new warranties issued

  65 

Settlements made

  (63)

Balance as of June 30, 2026

 $199 
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]

Revenue by Segment

 

 

  

Twelve Months Ended

 

(In thousands)

 

 

  

 

  

June 30, 2026

  

June 30, 2025

 

United States

         $686  $730 

Foreign Countries

         $227  $319 

Total Revenue

         $913  $1,049 
Disaggregation of Revenue [Table Text Block]

Product Revenue

 

 

  

Twelve Months Ended

 

(In thousands)

 

 

  

 

  

June 30, 2026

  

June 30, 2025

 

Product Revenue

          610   804 

Grant Revenue

          205   115 

Service Revenue

          97   130 

Total Revenue

         $913  $1,049 
Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Table Text Block]

Significant Segment Expenses

         

Twelve Months Ended

 

(In thousands)

         

June 30, 2026

  

June 30, 2025

 

Revenue

          913   1,049 

Research and development expense

          (6,484)  (8,142)

Selling, general and administrative expense

          (7,871)  (7,067)

Other segment items

          (696)  (574)

Loss from Operations

         $(14,138) $(14,734)