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Convertible notes payable original issue discount.

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Debt instrument, incremental final payment, percentage.

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Term of the required periodic payments applied to interest.

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Initial tranche of loan.

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Second tranche of loan.

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Tranche loan funded into restricted account.

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Warrants issued to purchase of common stock.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Contractual interest rate for funds borrowed, under the debt agreement.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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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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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Amount, after accumulated amortization, of debt discount.

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Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer.

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Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The cash outflow for loan and debt issuance costs.

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

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Expiration date 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 YYYY-MM-DD format.

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Loans and Convertible Notes Payable - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 06, 2021	Sep. 30, 2021	Mar. 31, 2020	Sep. 30, 2021
Debt Instrument [Line Items]
Avenue warrant value				$ 1,309
Fair value of warrants reclassified from liability to equity			$ 6,199
Secured Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount	$ 2,000
Secured Convertible Notes Payable [Member] \| Series E Convertible Preferred Stock [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 30, 2024
Debt instrument, conversion price	$ 1,198
Term Loan from Avenue Venture Opportunities Fund L.P [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	7.70%
Debt instrument, interest rate	10.95%
Debt instrument, maturity date	Aug. 01, 2024
Debt instrument, interest rate term	The Loan bears interest at an annual rate equal to the greater of (a) the sum of 7.70% plus the prime rate as reported in The Wall Street Journal and (b) 10.95%. The Loan is secured by all of the Company’s assets globally, including intellectual property.
Initial tranche of loan	$ 15,000
Loan amount funded into restricted account	4,000
Gross proceeds from ATM Offering	20,000
Second tranche of loan	$ 5,000
Debt instrument, conversion price	$ 11.98
Frequency of periodic payment	monthly
Periodic interest payments, term	15 months
Debt instrument, incremental final payment	4.25%
Debt instrument, commitment fee	$ 150
Debt instrument, commitment fee, percentage	1.00%
Debt instrument, commitment fee upon funding of second tranche of loan	$ 200
Original issue discount	637
Cash issuance costs	563
Debit discount	519
Fair value of warrants reclassified from liability to equity	44
Aggregate debt discount	2,327
Amortization of debt discount		$ 127
Term Loan from Avenue Venture Opportunities Fund L.P [Member] \| Non Convertible Debt
Debt Instrument [Line Items]
Aggregate debt discount	1,909
Amortization of debt discount		107
Term Loan from Avenue Venture Opportunities Fund L.P [Member] \| Convertible Debt
Debt Instrument [Line Items]
Aggregate debt discount	$ 418
Amortization of debt discount		$ 19
Term Loan from Avenue Venture Opportunities Fund L.P [Member] \| Warrant [Member]
Debt Instrument [Line Items]
Warrants issued to purchase of common stock	127,755
Warrant exercise price	$ 0.01
Warrants, maturity date	Aug. 31, 2026
Fair value of the Avenue Warrant	$ 1,171
Term Loan from Avenue Venture Opportunities Fund L.P [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount	20,000
Debt instrument, converted amount	$ 3,000
Periodic interest payments, term	24 months
Prepayment fee, percentage	3.00%
Term Loan from Avenue Venture Opportunities Fund L.P [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Prepayment fee, percentage	1.00%