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Stockholders' Equity - Summary of Stock Options Activity (Details) - USD ($)								9 Months Ended	12 Months Ended
	Sep. 01, 2019	May 01, 2019	Apr. 15, 2019	Apr. 01, 2019	Mar. 15, 2019	Mar. 13, 2019	Jan. 01, 2019	Sep. 30, 2019	Dec. 31, 2018
Number of Options
Outstanding, beginning balance (in shares)							3,257,875	3,257,875
Granted (in shares)								4,153,000
Canceled (in shares)								0
Exercised (in shares)								0
Expired/Forfeited (in shares)								(271,250)
Outstanding, ending balance (in shares)								7,139,625	3,257,875
Exercisable (in shares)								2,598,125
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)							$ 5.44	$ 5.44
Granted (in dollars per share)								1.84
Canceled (in dollars per share)								0.00
Exercised (in dollars per share)								0.00
Expired/Forfeited (in dollars per share)								5.28
Outstanding, ending balance (in dollars per share)								3.35	$ 5.44
Exercisable (in dollars per share)								$ 5.16
Outstanding Weighted Average Remaining Contractual Life (in Years)								6 years 29 days	3 years 2 months 9 days
Exercisable Weighted Average Remaining Contractual Life (in Years)								2 years 1 month 25 days
Aggregate Intrinsic Value, Outstanding								$ 0	$ 0
Aggregate Intrinsic Value, Exercisable								$ 0
Employee Stock Option | Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage per year)		50.00%	50.00%	50.00%				33.33%
Number of Options
Granted (in shares)	15,000	10,000	24,000	150,000	50,000	154,000	250,000
Weighted Average Exercise Price
Granted (in dollars per share)	$ 1.59	$ 1.38	$ 1.40	$ 1.70	$ 5.50	$ 1.73	$ 3.00

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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

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Percentage of vesting of share-based compensation awards.

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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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