v3.26.1
Note 8 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

December 31,

 
  

2025

  

2024

 
         

Deferred tax assets:

        

Net operating losses

 $87,976  $82,076 

Fixed asset basis difference

  4,934   4,839 

Contributions carryover

  163   43 

Deferred compensation

  306   332 

Accrued liabilities and other

  2,132   980 
         

Total deferred tax assets

  95,511   88,270 
         

Valuation allowance for deferred tax assets

  (95,511)  (88,270)
         

Net deferred tax asset

 $-  $- 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Year Ended December 31, 2025

 
         

US federal statutory income tax rate

 $(7,169)  21.0%

State and local income taxes, net of federal income tax effect(1)

  11   (0.0)

Valuation allowance

  5,249   (15.4)

Expiring carryforwards

  745   (2.2)

Non-deductible expenses and other

  1,175   (3.4)
         

Effective tax rate

 $11   0.0%
  

Year Ended December 31, 2024

 
         

US federal statutory income tax rate

 $(6,537)  21.0%

State and local income taxes, net of federal income tax effect(1)

  11   (0.0)

Valuation allowance

  4,942   (15.9)

Expiring carryforwards

  716   (2.3)

Non-deductible expenses and other

  879   (2.8)
         

Effective tax rate

 $11   0.0%
Schedule of Cash Paid for Income Taxes [Table Text Block]
  

Year Ended December 31, 2024

 
  2025  2024 
         

Federal

 $-   - 

State

  11   11 
         

Cash paid for income taxes, net of refunds received

 $11  $11