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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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount.

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