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Loans and Convertible Notes Payable - Summary of Remaining Maturities of Company's Loan and Convertible Note Payables (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Debt Instrument [Line Items]
Loans	$ 12,638
Convertible Notes	5,000
Total	17,638
Year ended December 31, 2022
Debt Instrument [Line Items]
Loans	571
Convertible Notes	143
Total	714
Year ended December 31, 2023
Debt Instrument [Line Items]
Loans	6,857
Convertible Notes	1,714
Total	8,571
Year ended December 31, 2024
Debt Instrument [Line Items]
Loans	5,210
Convertible Notes	3,143
Total	$ 8,353

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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