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v3.23.2

Debt - Narrative (Details) |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
May 12, 2023 USD ($) | Mar. 24, 2023 USD ($) agreement | Jun. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Number of amended agreements | agreement |  | 2 |  |  |  |
Number of agreements | agreement |  | 4 |  |  |  |
Short-term financing |  |  | $ 189,820,000 | $ 189,820,000 | $ 205,614,000 |
Debt, long-term and short-term, combined amount |  |  | 190,300,000 | 190,300,000 | 211,000,000 |
Cash and cash equivalents |  |  | 27,782,000 | 27,782,000 | 24,296,000 | $ 3,448,000
Accrued unpaid interest |  |  | 6,700,000 | 6,700,000 | 5,300,000 |
Revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issuance costs |  |  | 700,000 | 700,000 | 400,000 |
First Shareholder's Loan Agreement, Weichai | Revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Short-term financing |  |  | 0 | 0 |  |
Third Amended And Restated Credit Agreement | Revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Short-term financing |  |  | 110,000,000 | $ 110,000,000 | $ 130,000,000 |
Third Amended And Restated Credit Agreement | Revolving credit facility | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 3.35% |  |  |  |
Fourth Shareholder's Loan Agreement, Weichai | Revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Short-term financing |  | $ 30,000,000.0 |  |  |  |
Second, Third, And Fourth Shareholder's Loan Agreement, Weichai |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, incremental borrowing cost |  |  |  | 1.00% |  |
Second Shareholder's Loan Agreement, Weichai | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 4.05% |  |  |  |  |
Revolving credit facility | First Shareholder's Loan Agreement, Weichai |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 130,000,000.0 | 110,000,000.0 | $ 110,000,000.0 |  |
Paydown related to credit agreement |  |  | 20,000,000.0 |  |  |
Revolving credit facility | Second Standard Chartered Bank Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issuance costs |  | $ 1,000,000.0 |  |  |  |
Revolving credit facility | Fourth Shareholder's Loan Agreement, Weichai |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  |  | 30,000,000 | $ 30,000,000 |  |
Revolving credit facility | Fourth Shareholder's Loan Agreement, Weichai | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 4.05% |  |
Revolving credit facility | Second Shareholder's Loan Agreement, Weichai |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 25,000,000 |  | 50,000,000 | $ 50,000,000 |  |
Revolving credit facility | Second Shareholder's Loan Agreement, Weichai | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 4.65% |  |
Revolving credit facility | Third Shareholder's Loan Agreement, Weichai |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 50,000,000 | $ 50,000,000 |  |
Revolving credit facility | Third Shareholder's Loan Agreement, Weichai | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 4.65% |  |

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