Fair Value Measurement - Marketable Securities (Details Narrative) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Investments, Debt and Equity Securities [Abstract] | ||
| Maturities of securities | 1 year | |
| Net unrealized gain on marketable securities | $ 16,843 | $ 156 |
| Income tax expense | ||
| Proceeds from the sale of marketable securities | 302,095 | 1,095,218 |
| Net gain on securities | $ 1,051 | |
| X | ||||||||||
- Definition Available for sale securities debt maturities period. No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI). No definition available.
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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in marketable security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. No definition available.
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