XML 52 R41.htm IDEA: XBRL DOCUMENT v3.26.1
Note E - Income Taxes - Reconciliation of the Effective Income Tax Rate (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Research & development credits $ (10,000) $ (9,000)
Research & development credits, tax rate (0.40%) (0.10%)
Non-taxable dividends $ (4,441)  
Non-taxable dividends, tax rate (0.20%)  
(Over) under accrual from prior year $ (3,957) $ 3,170
(Over) under accrual from prior year, tax rate (0.10%)  
Total provision for income taxes $ 537,277 $ 857,582
Provision for income taxes, tax rate 20.30% 20.90%
Domestic Tax Jurisdiction [Member]    
Income taxes at statutory federal income tax rate $ 555,033 $ 862,776
Income taxes at statutory federal income tax rate, tax rate 21.00% 21.00%
State and Local Jurisdiction [Member]    
State taxes, net of federal benefit $ 642 $ 636
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent 0.00%