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Note 11 - Income Taxes (Tables)
12 Months Ended
Jun. 30, 2024
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

Year Ended June 30,

 

(In thousands)

 

2024

  

2023

 

Current

        

Federal

 $  $ 

State and local

  (2)   

Total current tax benefit/ (expense)

 $(2) $ 

Deferred

        

Federal

      

State and local

      

Total deferred tax benefit/ (expense)

 $  $ 

Total tax benefit/ (expense)

 $(2) $ 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Year Ended June 30,

 

(In thousands)

 

2024

  

2023

 

Expected benefit

 $2,449  $2,025 

State tax expense

  (2)   

Tax credits

  251   200 

Change in valuation allowance

  (2,465)  (1,838)

Stock-based compensation

  (271)  (296)

Prior year true-up

  43    

Expiration of net operating loss carryovers

     (88)

Other permanent items

  (7)  (3)

Total income tax benefit/ (expense)

 $(2) $ 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

Year Ended June 30,

 

(In thousands)

 

2024

  

2023

 

Deferred tax assets:

        

Net operating loss carryforwards

 $18,900  $17,920 

Tax credit carryforwards

  1,800   1,530 

Lease liability - current and non-current

  63   128 

Unrealized loss on securities

  247   305 

IRC Section 174 R&D Expense Capitalization

  2,107   1,061 

Accrued expenses and other timing

  310   143 

Stock-based compensation

  63   111 

Property and equipment, principally due to differences in depreciation

      

Total gross deferred tax assets

 $23,490  $21,198 

Less — valuation allowance

  (23,444)  (21,064)

Net deferred tax assets

 $46  $134 

Deferred tax liabilities:

        

Right-of-use assets

 $(25) $(55)

Property and equipment, principally due to differences in depreciation

  (21)  (79)

Total gross deferred tax liabilities

  (46)  (134)

Net deferred tax assets

 $  $ 
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
  

Year Ended June 30,

 

(In thousands)

 

2024

  

2023

 

Fiscal year beginning balance

 $486  $400 

Additions for tax positions of current period

  136   86 

Additions for tax positions of prior years

      

Decreases for tax positions of prior years

  (18)   

Fiscal year ending balance

 $604  $486