v3.21.2

Related Parties - Summary of Notes Payable to Related Parties (Detail) - USD ($) | Oct. 31, 2021 | Oct. 30, 2021 | Oct. 21, 2021 | Oct. 14, 2021 | Aug. 05, 2021 | Jul. 06, 2021 | Jan. 30, 2021 | Mar. 31, 2020 | Feb. 29, 2020
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount |  | $ 3,250,000 |  |  |  |  | $ 4,348,000 | $ 1,800,000 | $ 16,400,000
Amount classified as current |  | 178,000 |  |  |  |  | 2,478,000 |  |
Notes payable |  | $ 3,072,000 |  |  |  |  | 1,870,000 |  |
9% Unsecured Convertible Note Due January 6, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount |  |  |  |  |  | $ (272,000) |  |  |
9% Unsecured Convertible Note Due February 5, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount |  |  |  |  | $ (314,000) |  |  |  |
9% Unsecured Convertible Note Due April 14, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount |  |  |  | $ (650,000) |  |  |  |  |
9% Unsecured Convertible Note Due April 21, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount |  |  | $ (665,000) |  |  |  |  |  |
Notes Payable To Related Parties [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount | $ 3,500,000 |  |  |  |  |  | 400,000 |  |
Unamortized discount | (1,901,000) |  |  |  |  |  |  |  |
Total carrying value | 1,599,000 |  |  |  |  |  | 400,000 |  |
Amount classified as current | 1,599,000 |  |  |  |  |  | 400,000 |  |
Notes Payable To Related Parties [Member] | 18% Promissory Note Due April 21, 2021 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount |  |  |  |  |  |  | $ 400,000 |  |
Notes Payable To Related Parties [Member] | 9% Unsecured Convertible Note Due January 6, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount | 1,000,000 |  |  |  |  |  |  |  |
Notes Payable To Related Parties [Member] | 9% Unsecured Convertible Note Due February 5, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount | 1,000,000 |  |  |  |  |  |  |  |
Notes Payable To Related Parties [Member] | 9% Unsecured Convertible Note Due April 14, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount | 750,000 |  |  |  |  |  |  |  |
Notes Payable To Related Parties [Member] | 9% Unsecured Convertible Note Due April 21, 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total face amount | $ 750,000 |  |  |  |  |  |  |  |

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