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Stock Based Compensation - Schedule of Exercise Prices of Common Stock Options (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Exercise price lower range | $ 2.25 |
Exercise price upper range | $ 1.32 |
Number of Shares, Outstanding | 9,405,541 | 2,176,637
Number of Shares, Exercisable | 1,853,186 |
Exercise Price Range One [Member] |  |
Exercise price upper range | $ 1.00 |
Number of Shares, Outstanding | 6,093,500 |
Number of Shares, Exercisable | 516,333 |
Exercise Price Range Two [Member] |  |
Exercise price lower range | $ 1.01 |
Exercise price upper range | $ 1.25 |
Number of Shares, Outstanding | 1,707,482 |
Number of Shares, Exercisable | 921,946 |
Exercise Price Range Three [Member] |  |
Exercise price lower range | $ 1.26 |
Exercise price upper range | $ 1.50 |
Number of Shares, Outstanding | 28,309 |
Number of Shares, Exercisable | 7,198 |
Exercise Price Range Four [Member] |  |
Exercise price lower range | $ 1.51 |
Exercise price upper range | $ 1.75 |
Number of Shares, Outstanding | 345,000 |
Number of Shares, Exercisable | 108,542 |
Exercise Price Range Five [Member] |  |
Exercise price lower range | $ 1.76 |
Exercise price upper range | $ 2.00 |
Number of Shares, Outstanding | 1,055,000 |
Number of Shares, Exercisable | 252,500 |
Exercise Price Range Six [Member] |  |
Exercise price lower range | $ 2.01 |
Exercise price upper range | $ 2.25 |
Number of Shares, Outstanding | 135,000 |
Number of Shares, Exercisable | 5,417 |
Exercise Price Range Seven [Member] |  |
Exercise price lower range | $ 2.26 |
Exercise price upper range | $ 2.50 |
Number of Shares, Outstanding | 41,250 |
Number of Shares, Exercisable | 41,250 |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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