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Common stock options issued to placement agent and included in offering costs.

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Estimated fair value of liability options.

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Estimated fair value options exceeded gross proceeds.

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Fair value of common stock and pre-funded warrants.

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Issuance costs allocated to liability preferred options.

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Offering closing period.

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Options expiration period.

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Proceeds from issuance of common stock and warrants gross.

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Proceeds from issuance of common stock pre-funded warrants and preferred investment options.

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

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Warrant modification included in valuation loss.

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Warrants expiration period.

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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

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

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Price of a single share of a number of saleable stocks of a company.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Equity Financing - Additional Information (Detail) - USD ($)			1 Months Ended		3 Months Ended
	Mar. 06, 2023	Aug. 16, 2022	Mar. 31, 2023	Aug. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jan. 31, 2021	Dec. 31, 2020	Jul. 31, 2020	May 31, 2020	Sep. 30, 2019
Class Of Warrant Or Right [Line Items]
Change in fair value of common stock warrant and option liabilities					$ 940,000	$ 0
Maximum [Member]
Class Of Warrant Or Right [Line Items]
Proceeds from issuance, aggregate offering prices					50,000,000.0
Common Stock and Pre-Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Remaining offering costs allocated to common stock and offset to additional paid in capital	$ 330,000	$ 365,000
August 2022 Purchase Agreement [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued				61,250
Offering closing period				Aug. 16, 2022
August 2022 Purchase Agreement [Member] \| Pre Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrant issued, shares of common stock called by warrant				56,813
Warrants issued, exercise price				$ 0.004
August 2022 Purchase Agreement [Member] \| Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued				118,063
Exercise price				$ 37.35
Proceeds from issuance of common stock, pre-funded warrants and preferred investment options from March 2023 PIPE				$ 5,000,000.0
Warrants expiration period				5 years
March 2023 Placement Agent Options [Member]
Class Of Warrant Or Right [Line Items]
Issuance costs allocated to liability preferred options	$ 430,000
March 2023 Options and March 2023 Placement Agent Options [Member]
Class Of Warrant Or Right [Line Items]
Expected volatility	128.55%
Stock price	$ 7.61
Risk-free interest rate	4.27%
March 2023 Options and March 2023 Placement Agent Options [Member] \| Series B Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Expected volatility	103.33%
Stock price	$ 7.61
Risk-free interest rate	4.97%
August 2022 Options and August 2022 Placement Agent Options [Member]
Class Of Warrant Or Right [Line Items]
Expected volatility		128.46%
Stock price		$ 37.60
Risk-free interest rate		2.97%
Expected term		5 years
August 2022 Placement Agent Options [Member]
Class Of Warrant Or Right [Line Items]
Fair value assumptions, value		$ 191,000
Offering costs		488,000
Issuance costs allocated to liability preferred options		314,000
August 2022 Placement Agent Options [Member] \| Warrants [Member]
Class Of Warrant Or Right [Line Items]
Offering costs		$ 679,000
August 2022 Placement Agent Options [Member] \| August 2022 Purchase Agreement [Member] \| Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrant issued, shares of common stock called by warrant				5,904
Warrants issued, exercise price				$ 52.80
Warrant, exercisable term				5 years
March 2023 Options [Member]
Class Of Warrant Or Right [Line Items]
Estimated fair value of liability options	$ 6,600,000
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued			165,500
Offering costs					$ 548,000
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member] \| Series A Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued			666,334
Exercise price			$ 9.00		$ 9.00
Options expiration period			5 years
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member] \| Series A and B Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued			666,334
Exercise price			$ 9.00		$ 9.00
Proceeds from issuance of common stock and warrants gross					$ 6,000,000.0
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member] \| Series B Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Options expiration period			1 year 6 months
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member] \| Pre Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrant issued, shares of common stock called by warrant			500,834		500,834
Warrants issued, exercise price			$ 0.0001		$ 0.0001
March 2023 Private Placement [Member] \| March 2023 Purchase Agreement [Member] \| Common Stock and Pre-Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Fair value of common stock and pre-funded warrants	5,100,000
March 2023 Private Placement [Member] \| Option Amendment Agreements [Member] \| Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Warrant issued, shares of common stock called by warrant			178,132		178,132
March 2023 Private Placement [Member] \| Option Amendment Agreements [Member] \| Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrants issued, exercise price			$ 9.00	$ 37.35	$ 9.00		$ 125.20	$ 120.00	$ 154.00	$ 191.00	$ 300.80
March 2023 Private Placement [Member] \| March 2023 Placement Agent Options [Member] \| Preferred Investment Options [Member]
Class Of Warrant Or Right [Line Items]
Shares of common stock issued			33,317
March 2023 Private Placement [Member] \| March 2023 Placement Agent Options [Member] \| March 2023 Purchase Agreement [Member]
Class Of Warrant Or Right [Line Items]
Common stock options issued to placement agent and included in offering costs					$ 212,000
March 2023 Private Placement [Member] \| March 2023 Placement Agent Options [Member] \| March 2023 Purchase Agreement [Member] \| Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrant modification included in valuation loss					$ 404,000
March 2023 Private Placement [Member] \| March 2023 Placement Agent Options [Member] \| Option Amendment Agreements [Member]
Class Of Warrant Or Right [Line Items]
Exercise price			$ 11.25		$ 11.25
Warrant, exercisable term					5 years
March 2023 Private Placement [Member] \| August 2022 Placement Agent Options [Member] \| August 2022 Purchase Agreement [Member] \| Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrant modification included in valuation loss					$ 185,000
March 2023 Private Placement [Member] \| March 2023 Options [Member] \| March 2023 Purchase Agreement [Member] \| Common Stock and Pre-Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Estimated fair value, loss	$ 5,700,000