v3.19.3

Note 11 - Stock Options - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2019	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Weighted Average Exercise Price, outstanding (in dollars per share)		$ 2.76	$ 0.10		$ 0.10
Number of Options, outstanding (in shares)		690	19,222,000		19,222,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period		(17)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price		$ 93.48
Number of Options, outstanding (in shares)		731	690		19,222,000		19,222,000
Weighted Average Exercise Price, outstanding (in dollars per share)		$ 23.38	$ 2.76		$ 0.10		$ 0.10
Weighted Average Remaining Life in Years, outstanding (Year)		6 years 1 month 6 days	7 years 4 months 24 days		8 years 4 months 24 days		9 years 4 months 24 days
Intrinsic Value, outstanding		$ 33	$ 6,956	[1]	$ 6,639	[1]
Options Outstanding, Vested and expected to vest (in shares)			19,222,000
Weighted Average Exercise Price Per Share, Vested and expected to vest (in dollars per share)			$ 0.10
Weighted-average Remaining Contractual Life, Vested and expected to vest (Year)			7 years 4 months 24 days
Aggregate Intrinsic Value, Vested and expected to vest	[1]		$ 6,956
Number of Options, exercisable (in shares)		550	11,146,000
Weighted Average Exercise Price, exercisable (in dollars per share)		$ 30.07	$ 0.09
Weighted Average Remaining Life in Years, exercisable (Year)		5 years 9 months 18 days	7 years 4 months 24 days
Intrinsic Value, exercisable		$ 33	$ 4,119	[1]
Shares Available For Grant, Balance (in shares)			5,000		5,000		5,000
Alliqua Biomedical, Inc. [Member]
Number of Options, outstanding (in shares)		58
Weighted Average Exercise Price, outstanding (in dollars per share)		$ 289.76
[1] The aggregate intrinsic value is calculated as the difference between the stock option exercise price and the estimated fair value of the Company’s common stock of $0.46 and $0.44 per share as of December 31, 2018 and 2017.

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- Definition

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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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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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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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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