v3.23.1
BALANCE SHEETS (Parenthetical) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
BALANCE SHEETS    
Allowance for doubtful accounts (in dollars) $ 15,000 $ 15,000
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized 15,000,000 15,000,000
Common stock, shares issued 4,530,207 4,519,524
Common stock, shares outstanding 4,530,207 4,519,524