Number of warrants exercised.

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Share-based compensation arrangement by share-based payment award, eligible payroll cost for award.

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Share-based compensation arrangement by share-based payment award, employee subscription rate.

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Warrant expiration period.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Number of warrants or rights outstanding.

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The number of warrants or rights which entitle the entity to receive future services in exchange for the unvested, forfeitable warrants or rights.

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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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No definition available.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of noncash expense for share-based payment arrangement.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Date the equity-based award expires, in CCYY-MM-DD format.

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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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The highest quantity of shares an employee can purchase under the plan per period.

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Number of shares authorized for issuance under share-based payment arrangement.

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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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Number of new stock issued during the period.

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Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in CCYY-MM-DD format.

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Stock Benefit Plans and Equity Transactions - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended		6 Months Ended
	May 29, 2020	Apr. 05, 2020	Jul. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 17, 2020	Apr. 08, 2020	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding				25,400,659		25,400,659
Stock-based compensation						$ 8,143,000	$ 3,963,000
2017 PIPE Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period						5 years
Proceeds from exercise of warrant					$ 200,000	$ 300,000	$ 200,000
Number of warrants exercised				0	118,864	125,000	118,864
Warrants outstanding				3,255,554		3,255,554
Exercise price of warrants				$ 2.02		$ 2.02
2018 Common Stock Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period						5 years
Warrants outstanding				11,663,147		11,663,147
Exercise price of warrants				$ 3.50		$ 3.50
2018 Common Stock Warrants \| 2018 PIPE Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from exercise of warrant					$ 500,000	$ 900,000	$ 500,000
Number of warrants exercised				0	136,000	2,059,524	136,000
Warrants outstanding				11,663,147		11,663,147
Squadron Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period	7 years
Warrants outstanding				6,759,530		6,759,530
Number of warrants issued (in shares)	1,075,820				4,838,710		4,838,710			845,000
Exercise price of warrants	$ 4.88				$ 2.17		$ 2.17			$ 3.15
Warrant termination date	May 29, 2027
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				4,596,708,000		4,596,708,000		7,000,000
Salary-to-Equity Conversion Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting date		Jul. 10, 2020
Deferred compensation liability				$ 700,000		$ 700,000
Salary-to-Equity Conversion Program \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible employee payroll cost for conversion program		$ 100,000
Employee voluntary election to reduce compensation rate		10.00%
Salary-to-Equity Conversion Program \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee voluntary election to reduce compensation rate		75.00%
2017 Distributor Inducement Plan \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued				51,500
Stock-based compensation				$ 100,000	$ 100,000	$ 100,000	$ 100,000
Number of warrants available to be granted				220,000		220,000
2017 Distributor Inducement Plan \| Common Stock \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of warrants											1,000,000
Two Thousand Seventeen Development Services Plan \| Restricted Common Stock \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				4,619,000		4,619,000
Two Thousand Seventeen Development Services Plan \| Common Stock \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant									6,000,000
Common stock issued						0
2019 Management Objective Strategic Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation						$ 100,000
2019 Management Objective Strategic Incentive Plan \| Unvested restricted share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum grant of shares per participant						25,000
Restricted shares granted under the plan						130,000
2019 Management Objective Strategic Incentive Plan \| Common Stock \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of warrants			500,000
Maximum grant of shares per participant			50,000