Stock Based Compensation (Detail Textuals) - $ / shares	6 Months Ended	12 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Stock options
Stock-based compensation
Options granted (in shares)	1,550,270	306,304
Grant date fair value		$ 1.25
Percentage of vesting of awards	25.00%
Fair value assumptions method used	Black-Scholes option-pricing model
Stock options \| Minimum
Stock-based compensation
Grant date fair value	$ 0.52	1.17
Stock options \| Maximum
Stock-based compensation
Grant date fair value	$ 0.61	$ 1.29
Performance based options
Stock-based compensation
Options granted (in shares)	174,272
2018 Equity Incentive Plan (the "2018 Plan")
Stock-based compensation
Number of authorized shares	1,500,000
Number of authorized additional shares to be issued	709,889
2018 Equity Incentive Plan (the "2018 Plan") \| Minimum
Stock-based compensation
Maximum life of stock option awards granted	1 year
Vesting period	1 year
2018 Equity Incentive Plan (the "2018 Plan") \| Maximum
Stock-based compensation
Maximum life of stock option awards granted	4 years
Vesting period	4 years
2018 Equity Incentive Plan (the "2018 Plan") \| Stock options
Stock-based compensation
Number of shares reserved for issuance	152,083
Maximum life of stock option awards granted	10 years

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
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Percentage of vesting of share-based compensation awards.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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