Quarterly report pursuant to Section 13 or 15(d)

K. COMMITMENTS AND CONTINGENCIES (Details-Sales Tax Accrual)

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K. COMMITMENTS AND CONTINGENCIES (Details-Sales Tax Accrual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Change in the sales tax accrual    
Balance, Beginning of year $ 83,282 $ 274,869
Sales tax collected 35,133 297,673
Provisions 6,734 (33,000)
Interest and penalties 0 (5,890)
Payments (81,000) (450,370)
Balance, End of period $ 44,149 $ 83,282