Number of equity-based compensation plans.

No definition available.

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- Definition

Refers to the percentage of stock outstanding as of the immediately preceding December 31st used to determine the annual increase in the Plan limit for authorized shares that may be granted as qualified and nonqualified options.

+ References

No definition available.

+ Details

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- Definition

Term the Plan shall continue to remain effective, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Stock-Based Compensation, Equity Compensation Plans (Details)	12 Months Ended
	Dec. 31, 2020 Plan shares	Dec. 31, 2014 shares	Dec. 09, 2020 shares	Dec. 08, 2020 shares	Mar. 31, 2019 shares	Jan. 02, 2019 shares	Dec. 31, 2018 shares	Jan. 02, 2018 shares	Jan. 02, 2017 shares	Jan. 02, 2016 shares
Stock Options [Abstract]
Number of equity compensation plans \| Plan	3
The Plans [Member]
Stock Options [Abstract]
Term of plan	10 years
The Plans [Member] \| Incentive Stock Options [Member]
Stock Options [Abstract]
Vesting period	4 years
The Plans [Member] \| Incentive Stock Options [Member] \| Maximum [Member]
Stock Options [Abstract]
Term of option	10 years
The Plans [Member] \| Nonqualified Stock Options [Member] \| Minimum [Member]
Stock Options [Abstract]
Vesting period	1 year
The Plans [Member] \| Nonqualified Stock Options [Member] \| Maximum [Member]
Stock Options [Abstract]
Vesting period	5 years
2014 Equity Incentive Plan [Member]
Stock Options [Abstract]
Number of shares authorized for issuance (in shares)		91,367			826,292	323,529		271,941	210,203	152,366
Percentage of Common Stock outstanding used to determine annual increase in the plan limit		4.00%
2018 Equity Incentive Plan [Member]
Stock Options [Abstract]
Number of shares authorized for issuance (in shares)							558,071
Shares available for grant (in shares)	190,799
2019 Inducement Plan [Member]
Stock Options [Abstract]
Common stock reserved for issuance (in shares)			500,000	200,000
Shares available for grant (in shares)	421,500