Stockholders' Equity (Details) - Employee Stock Option [Member] - $ / shares |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of Nonvested Beginning | 1,241,675 | |
| Options granted | 0 | |
| Number of Nonvested Ending | 1,241,675 | 1,241,675 |
| Options vested and exercisable at March 31, 2019 | 271,615 | |
| Weighted Average Exercise Price, Beginning | $ 5.73 | |
| Weighted Average Exercise Price, Options granted | 0 | |
| Weighted Average Exercise Price, Ending | 5.73 | $ 5.73 |
| Weighted Average Exercise Price, Options vested and exercisable | $ 5.73 | |
| Weighted Average Remaining Contractual Life, Options outstanding (in years) | 8 years 21 days | 8 years 3 months 21 days |
| Weighted Average Remaining Contractual Life, Options vested and exercisable (in years) | 8 years 21 days |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of non-vested options outstanding. No definition available.
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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