Fair Value Measurement - Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Carrying Value | Notes receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	$ 3,855	$ 3,650
Carrying Value | Note payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	14,016	18,695
Carrying Value | Equipment financing facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	5,581	6,371
Carrying Value | Yorkville Convertible Note
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	7,333	0
Carrying Value | 2021 Convertible Notes without embedded derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	76,498	71,789
Fair Value | Fair Value, Inputs, Level 3 | Notes receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	2,062	2,805
Fair Value | Fair Value, Inputs, Level 3 | Note payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	9,867	14,607
Fair Value | Fair Value, Inputs, Level 3 | Equipment financing facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	4,847	5,951
Fair Value | Fair Value, Inputs, Level 3 | Yorkville Convertible Note
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	7,444	0
Fair Value | Fair Value, Inputs, Level 3 | 2021 Convertible Notes without embedded derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	$ 55,082	$ 61,866