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Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 19,810 $ 29,704
Deferred issuance costs $ 29,354 $ 53,916
Common stock, par value $ 1 $ 1
Common stock, shares authorized 100,000 100,000
Common stock, shares issued 100,000 100,000
Common stock, shares outstanding 100,000 100,000