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Stock Options and Warrants (Details) - Employee Stock Option [Member] - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Shares, Beginning Balance 2,147,000 2,107,000
Shares, Exercised 0 0
Shares, Cancelled/expired 0 0
Shares, Ending Balance 2,147,000 2,107,000
Exercisable at end of period 2,022,000 1,485,000
Weighted Average Exercise Price, at beginning of period $ 0.13 $ 0.13
Weighted Average Exercise Price, at end of period 0.13 0.13
Weighted Average Exercise Price, Exercisable, at end of period $ 0.13 $ 0.13
Aggregate Intrinsic Value, Outstanding at end of period $ 15,000 $ 15,000