v3.26.1
Note 11 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
  

Year Ended December 31,

 
  

2025

  

2024

 

United States

 $(6,353) $(4,033)

Foreign

  —   — 

Total

 $(6,353) $(4,033)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

Year Ended December 31,

 
  

2025

  

2024

 

Current:

        

Federal

 $—  $— 

Foreign

  —   3 

State

  2   7 

Total current

  2   10 
         

Total deferred

  —   — 

Income tax expense

 $2  $10 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Amount

  

Percent

 

U.S. federal statutory rate

 $(1,334)  21.00%

State and local taxes, net of federal effects (1)

  1   (0.01)%

Change in valuation allowance

  1,259   (19.82)%

Nontaxable or nondeductible items

  54   (0.85)%

Other Reconciling Items

  22   (0.35)%

Effective tax rates

 $2   (0.03)%
  

Amount

 

U.S. federal income taxes at the statutory rate

 $(847)

State Taxes, Net of Federal Effects

  (57)

U.S Federal and State NOL Carryforward adjustment for expired NOLs and other

  62 

Stock Compensation Adjust for Expired Options

  67 

Change in valuation allowance

  1,026 

State Taxes, Change in Apportionment Rate

  (297)

Other

  56 

Income tax expense

 $10 
Schedule of Income Taxes Paid [Table Text Block]

Federal

 $— 

State

    

California

  2 

New Jersey

  4 

Other States

  1 

Total cash paid for income taxes, net of refunds

 $7 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

Year Ended December 31,

 
  

2025

  

2024

 

Deferred tax assets (liabilities):

        

Tax benefit of operating loss carry forward - Federal

 $30,801  $30,164 

Tax benefit of operating loss carry forward - State

  6,360   6,319 

Accrued expenses

  193   211 

Deferred revenue

  3   8 

Fixed assets

  —   1 

Inventory

  195   199 

Intangible amortization

  8   19 

Section 174 research and experimentation

  174   261 

R&D credit

  2,154   2,154 

Texas margin tax temporary credit

  37   37 

Charitable contributions

  41   33 

Unrealized loss - digital assets

  795   — 

Total deferred tax asset, net of deferred tax liabilities

  40,761   39,406 
         

Valuation allowance

  (40,761)  (39,406)

Net deferred tax asset

 $—  $—