Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components (Details Textual)

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Balance Sheet Components (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Depreciation, Depletion and Amortization $ 9,268 $ 17,498 $ 19,226 $ 42,330