Cashless exercise of stock options, shares.

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, options fair value.

+ References

No definition available.

+ Details

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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-Topic 210
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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

+ References

+ Details

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- Definition

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.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

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- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

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- Definition

Value of stock issued as a result of the exercise of stock options.

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Stock Plans and Share-Based Payments (Details Narrative) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	May 07, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercised, value	$ 62	$ 2
Employee service share-based compensation, nonvested awards, compensation not yet recognized, stock options	$ 2,100
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	6 years 9 months 18 days
SRP Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2	26
Number of shares reserved and authorized for awards			150,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	41	$ 28
Employee service share-based compensation, nonvested awards, compensation not yet recognized, stock options	334
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		1 year 2 months 12 days
Selling, General and Administrative Expenses [Member] \| 2019 SRP Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	2	$ 12
Selling, General and Administrative Expenses [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	41	23
Research and Development Expenses [Member] \| 2019 SRP Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		14
Research and Development Expenses [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		5
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	233	168
Stock Options [Member] \| Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	222	152
Stock Options [Member] \| Research and Development Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 11	$ 16
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercised	14,754	556
Number of stock options exercised, value
Cashless exercise of stock options, shares	131	755
Common Stock [Member] \| Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercised	1,042
Cashless exercise of stock options, shares	131
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	160,428
Fair value of stock options granted	$ 866
Employees [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued, value	$ 169