Description of prepayment fee.

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Final payment of loan.

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Number of Trials Utilized to Determine Estimated Fair Value

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Other costs.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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

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The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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

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

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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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Amount of the required periodic payments applied to interest.

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Description of debt redemption features under terms of the debt agreement.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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The effective interest rate during the reporting period.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Definite liabilities to third parties under a termination loan agreement, whether or not guaranteed in whole or in part by the government.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Financing Arrangements - Additional Information (Detail)			1 Months Ended	3 Months Ended
	Apr. 27, 2021 USD ($)	Mar. 30, 2020 USD ($)	Feb. 29, 2020 USD ($)	Mar. 31, 2021 USD ($) customer $ / shares shares	Mar. 31, 2020 USD ($) Trial	Feb. 21, 2021 USD ($)	Feb. 21, 2020 USD ($)	Dec. 31, 2019 USD ($)	Aug. 07, 2017 USD ($)
Debt Instrument [Line Items]
Debt insrument redemption description				The simulation utilized the assumptions that if the Company was able to exercise its forced conversion right (if the requirements to do so were met), that it would do so in 100% of such scenarios. Additionally, if an event of default occurred during the simulated trial (based on the Company’s probability of default), the Investors would opt to redeem the Convertible Debentures in 100% of such scenarios.
Loss from fair value of the convertible debentures			$ 7,500,000
Description of prepayment fee				the prepayment date, (2) the final payment ($122,500 or 1.75% of the original loan amount), (3) a 2% of principal if prepaid after March 30, 2021 but before June 30, 2022, or 1% of principal if prepaid after March 30, 2022) plus
Final payment of loan				$ 510,000
Gain (Loss) on Extinguishment of Debt					$ (341,000)
Reclassified the fair value of convertible debentures						$ 21,200,000	$ 21,164,000	$ 13,642,000
Obligations repaid	$ 7,354,283,000				$ 2,000,000
Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Termination Loans				$ 114,000
Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Final payment of loan		$ 185,000
Termination Loans		114,000
Other Costs		10,000
Gain (Loss) on Extinguishment of Debt		341,000
Unamortized closing costs		$ 42,000
Western Alliance Bank [Member]
Debt Instrument [Line Items]
Percentage of final payment		1.75%
First interest payment		$ 122,500
Interest Rate During Period		3.25%
Interest Rate Description				$6.0
Western Alliance Bank [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Interest Rate During Period		4.25%
Western Alliance Bank [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate During Period		1.00%
Convertible Debt [Member]
Debt Instrument [Line Items]
Aggregate principal amount								$ 7,000,000.0
Debt conversion, conversion price per share \| $ / shares				$ 4.00
Convertible debenture Number of instrumnts converted \| customer				1,742,500
Shares issued up on conversion \| shares				1,816,466
Convertible Debt [Member] \| Make Whole Provision [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 697,000
Convertible debenture Number of instrumnts converted \| customer				76,966
Convertible Debt [Member] \| Monte Carlo Simulation [Member]
Debt Instrument [Line Items]
Number of trials to detremine fair value \| Trial					100,000
Term Loan A [Member] \| Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Credit facility		$ 7,000,000.0
Revolving Credit Facility [Member] \| Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Credit facility		$ 5,000,000.0							$ 4,000,000.0
Revolving Credit Facility [Member] \| Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Credit facility									$ 6.0