Represents required percentage of ownership in order for warrants become exercisable.

No definition available.

Name:	acrx_ClassOfWarrantOrRightRequiredPercentageOfOwnershipToBecomeExercisable
Namespace Prefix:	acrx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of modification of warrants for equity issuance costs.

+ References

No definition available.

+ Details

Name:	acrx_EquityIssuanceCostsModificationOfWarrants
Namespace Prefix:	acrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the price per unit in an equity offering.

+ References

No definition available.

+ Details

Name:	acrx_EquityOfferingPricePerUnit
Namespace Prefix:	acrx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of proceeds from issuance or sale of equity after warrant adjustments.

+ References

No definition available.

+ Details

Name:	acrx_ProceedsFromIssuanceOrSaleOfEquityAfterWarrantAdjustment
Namespace Prefix:	acrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Proceeds from issuance or sale of equity, net of other costs.

+ References

No definition available.

+ Details

Name:	acrx_ProceedsFromIssuanceOrSaleOfEquityNet
Namespace Prefix:	acrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

+ Details

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

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfWarrants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

Name:	us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481004/946-505-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

Name:	us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Period between issuance and expiration 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 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_RedeemableConvertiblePreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_The2022PrefundedWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_CommonWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_December2022FinancingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputSharePriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_August2022LpcWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_November2021FinancingWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_ModifiedNovember2021WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_AdditionalPaidInCapitalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=acrx_WarrantInConnectionWithOxfordFinanceLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExercisePriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=acrx_December2022FinancingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=acrx_SecuritiesPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=acrx_RegisteredDirectOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 12 - Warrants (Details Textual)						1 Months Ended	12 Months Ended
Note 12 - Warrants (Details Textual)	Dec. 29, 2022 USD ($) $ / shares shares	Dec. 27, 2022 $ / shares shares	Aug. 03, 2022 USD ($) $ / shares shares	Nov. 17, 2021 USD ($) $ / shares shares	Nov. 15, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares	Oct. 25, 2022 $ / shares	Dec. 31, 2020 shares	May 30, 2019 USD ($) $ / shares yr shares
Common Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares						$ 0.001	$ 0.001	$ 0.001	$ 0.001
Equity Issuance Costs, Modification of Warrants							$ 47,000	$ 0
Warrants and Rights Outstanding						$ 7,098,000	$ 7,098,000	0
Redeemable Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares			3,000
Proceeds from Issuance or Sale of Equity, Net			$ 129,000
The 2022 Prefunded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares		2,632,898
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 0.0001
Equity Offering, Price Per Unit (in dollars per share) \| $ / shares	$ 2.22615
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| $ / shares	2.22615
Class of Warrant or Right, Outstanding (in shares) \| shares						2,632,898	2,632,898
Common Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares		4,227,052
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 2.07
Class of Warrant or Right, Outstanding (in shares) \| shares						4,227,052	4,227,052
December 2022 Financing [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 2.07
Warrants and Rights Outstanding	$ 7,100,000
Proceeds from Issuance of Warrants	$ 335,000
December 2022 Financing [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| $ / shares	2.13
December 2022 Financing [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	6
December 2022 Financing [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0.9544
December 2022 Financing [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0.0393
December 2022 Financing [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0
December 2022 Financing [Member] \| Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 1.00
August 2022 LPC Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares			81,150
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 2.07		$ 4.07			$ 2.07	$ 2.07
Warrants and Rights Outstanding			$ 300,000
Proceeds from Issuance or Sale of Equity, Net			$ 110,000
August 2022 LPC Warrant [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| $ / shares			4.44
August 2022 LPC Warrant [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)			5.5
August 2022 LPC Warrant [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)			0.8994
August 2022 LPC Warrant [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)			0.0286
August 2022 LPC Warrant [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)			0
November 2021 Financing Warrants [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares					875,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares					875,000	125,000	125,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares				$ 20.00	$ 20.00	$ 20.00	$ 20.00
Warrants and Rights Outstanding				$ 5,600,000	$ 8,600,000
Proceeds from Issuance of Warrants					$ 5,600,000
November 2021 Financing Warrants [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)					14.92
November 2021 Financing Warrants [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)					5
November 2021 Financing Warrants [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)					0.9177
November 2021 Financing Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)					0.0126
November 2021 Financing Warrants [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)					0
November 2021 Financing Warrants [Member] \| Maximum [Member]
Class of Warrant or Right, Required Percentage of Ownership to Become Exercisable					9.99%
Modified November 2021 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares	750,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 2.07
Equity Issuance Costs, Modification of Warrants	$ 800,000
Modified November 2021 Warrants [Member] \| Additional Paid-in Capital [Member]
Equity Issuance Costs, Modification of Warrants	100,000
Modified November 2021 Warrants [Member] \| Selling, General and Administrative Expenses [Member]
Equity Issuance Costs, Modification of Warrants	$ 700,000
Modified November 2021 Warrants [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| $ / shares	2.13
Modified November 2021 Warrants [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	6
Modified November 2021 Warrants [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0.9544
Modified November 2021 Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0.0393
Modified November 2021 Warrants [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)	0
Warrant In Connection with Oxford Finance Loan Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares											8,833
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares											$ 56.60
Warrants and Rights Outstanding											$ 400,000
Class of Warrant or Right, Outstanding (in shares) \| shares										8,833
Warrants and Rights Outstanding, Term (Year)											10 years
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| $ / shares											53.20
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share) \| yr											10
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)											0.8022
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)											0.0222
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (in dollars per share)											0
Warrant In Connection with Oxford Finance Loan Agreement [Member] \| Measurement Input, Exercise Price [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares											$ 56.60
December 2022 Financing [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares		748,744
Common Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares		$ 0.001
Equity Offering, Price Per Unit (in dollars per share) \| $ / shares	$ 2.22625
Proceeds from Issuance or Sale of Equity, Total						$ 7,500,000
Payments of Stock Issuance Costs						1,700,000
Equity Issuance Costs, Modification of Warrants						$ 800,000
Proceeds from Issuance or Sale of Equity, After Warrant Adjustment	$ 400,000
Proceeds from Issuance of Common Stock	95,000
Proceeds from Issuance or Sale of Equity, Net	$ 6,600,000
Securities Purchase Agreement [Member]
Proceeds from Issuance or Sale of Equity, Total			$ 300,000
Proceeds from Issuance or Sale of Equity, Net			$ 200,000
2021 Registered Direct Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) \| shares				875,000
Proceeds from Issuance or Sale of Equity, Total				$ 14,000,000.0	$ 14,000,000.0
Proceeds from Issuance of Common Stock							$ 7,528,000	0
Proceeds from Issuance of Warrants							$ 0	$ 13,918,000
2021 Registered Direct Offering [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Proceeds from Issuance or Sale of Equity, Total					14,000,000.0
Proceeds from Issuance of Common Stock					$ 8,400,000
2021 Registered Direct Offering [Member] \| November 2021 Financing Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares				875,000