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.

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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Details

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- Details

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Stock-Based Compensation, Equity Compensation Plans (Details) - shares	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2022	May 17, 2022	May 16, 2022	Dec. 08, 2020	Dec. 07, 2020	Mar. 31, 2019	Dec. 31, 2018
2014 Equity Incentive Plan [Member]
Stock Options [Abstract]
Number of shares authorized for issuance (in shares)	91,367				3,339,243		826,292
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
Inducement Plan [Member]
Stock Options [Abstract]
Shares available for grant (in shares)		215,215
Common stock reserved for issuance (in shares)			1,100,000	500,000	500,000	200,000