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 | | | | | | |
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 | | | | | | | |
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 | | $ 9 | | | | | | |
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 | | $ 9 | | | | | | |
Proceeds from issuance of common stock and warrants gross | | | | | $ 6,000,000 | | | | | | |
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 | $ 37.35 | $ 9 | | $ 125.20 | $ 120 | $ 154 | $ 191 | $ 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 | | | | | | | | | | |