Investments and Fair Value of Financial Instruments (Details Narrative) (10-K) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Fair Value Disclosures [Abstract] | ||||||
| Unrealized losses on affiliate warrants | $ 1,066 | $ 14,824 | $ 1,773 | $ 16,451 | $ 18,561 | $ 16,287 |
| X | ||||||||||
- Definition Unrealized losses on affiliate warrants. No definition available.
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| X | ||||||||||
- References No definition available.
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