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Balance Sheets - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Current assets:    
Accrued accounts receivable $ 41,705 $ 78,119
Prepaid expense and other assets 11,242 171,202
Total current assets 18,063,055 9,579,388
Property and equipment, net 4,222,713 9,036,105
Deferred tax asset 0 231,744
Total assets 22,285,768 18,847,237
Current liabilities:    
Trade payables and accrued expenses 87,985 52,420
Income tax payable 469,048 0
Unearned revenue 173,369 211,763
Total current liabilities 730,402 264,183
Deferred tax liability 109,954 0
Total liabilities 840,356 264,183
Stockholders' equity:    
Common stock, 3,000,000 shares authorized, no par value, 2,102,595 and 2,053,129 shares issued and outstanding, respectively, as of December 31, 2025, and 2,066,044 and 2,027,032 shares issued and outstanding, respectively, as of December 31, 2024 59,335 59,335
Additional paid in capital 3,374,002 3,374,002
Treasury stock, 49,466 and 39,012 shares, at cost, respectively, as of December 31, 2025 and 2024 (620,216) (472,602)
Retained earnings 18,632,291 15,622,319
Total stockholders' equity 21,445,412 18,583,054
Total liabilities and stockholders' equity 22,285,768 18,847,237
Cash and Cash Equivalents Excluding Certificates of Deposit [Member]    
Current assets:    
Cash and cash equivalents 18,010,108 3,421,576
Certificates of Deposit [Member]    
Current assets:    
Cash and cash equivalents $ 0 $ 5,908,491