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Long-Term Debt - Summary of Long Term Debt (Detail) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Debt Disclosure [Abstract] |  |
Principal amount of long-term debt | $ 32,500 | $ 32,500
Debt discount, net of accretion | 127 | 277
Cumulative accretion of end of term payments | 597 | 1,157
Long-term debt | 33,224 | 33,934
Current portion of long-term debt | (3,415) | (795)
Long-term debt, net of current portion | $ 29,809 | $ 33,139

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