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v3.21.2

Long-Term Debt - Swaps (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) item | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) item | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Jun. 13, 2019 USD ($)
Derivative [Line Items] |  |  |  |  |  |
Amount amortized from AOCL to earnings | $ (291) | $ 748 | $ 859 | $ 1,496 |  |
Amount expected to be amortized from AOCI |  |  | 687 |  |  |
Adjustments on derivatives not classified as hedges |  |  | (1,020) | 3,133 |  |
Inventories - truck chassis floor plan | 7,916 |  | 7,916 |  | $ 8,146 |
Mark-to-market adjustment interest expense | 119 | $ (673) | (1,879) | $ 1,637 |  |
Interest rate swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Negative fair value | $ 9,149 |  | $ 9,149 |  | 13,073 |
Number of financial institutions for which the entity is exposed to counterparty credit risk | item | 1 |  | 1 |  |  |
Interest rate swap | Accrued Expenses and Other Current Liabilities |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Negative fair value | $ 4,106 |  | $ 4,106 |  | 4,075 |
Interest rate swap | Other Noncurrent Liabilities |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Negative fair value | $ 5,043 |  | $ 5,043 |  | $ 8,998 |
Interest rate swap effective May 31,2019 through May 31,2024 [member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount |  |  |  |  |  | $ 175,000
Interest rate | 2.495% |  | 2.495% |  |  |

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