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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DEBT- Scheduled Future Payments on Term Loan (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Oct. 30, 2020	Oct. 29, 2020	Dec. 31, 2018
Debt Instrument [Line Items]
Less: current portion	$ 0	$ 0
Long-term portion	57,022	$ 56,940
SVB Term Loan
Debt Instrument [Line Items]
The remainder of 2021	0
2022	3,222
2023	19,333
2024	19,333
2025	16,112
Total future principal payments	58,000		$ 58,000	$ 56,000	$ 56,000
Less: unamortized debt discount	(978)
Carrying value of long-term debt	57,022
Less: current portion	0
Long-term portion	$ 57,022