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Stockholders' Equity - Summary of Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Equity [Abstract]
Number of Shares, Outstanding at beginning of year | shares	2,176,637
Number of Shares, Granted | shares	2,021,250
Number of Shares, Exercised | shares	(125,000)
Number of Shares, Forfeited | shares	(189,884)
Number of Shares, Expired | shares
Number of Shares, Outstanding at end of year | shares	3,883,003
Number of Shares, Exercisable | shares	937,271
Weighted Average Exercise Price, Outstanding at beginning of year | $ / shares	$ 1.25
Weighted Average Exercise Price, Granted | $ / shares	1.74
Weighted Average Exercise Price, Exercised | $ / shares	0.17
Weighted Average Exercise Price, Forfeited | $ / shares	1.43
Weighted Average Exercise Price, Expired | $ / shares
Weighted Average Exercise Price, Outstanding at end of year | $ / shares	1.49
Weighted Average Exercise Price, Exercisable | $ / shares	$ 1.25
Weighted Average Remaining Contractual Life, Outstanding	9 years 3 months 15 days
Weighted Average Remaining Contractual Life, Exercisable	8 years 9 months 11 days

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Number of Shares, Outstanding at beginning of year.

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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.

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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.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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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.

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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.

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Number of share options (or share units) exercised during the current period.

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