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v3.21.2

Long-Term Debt - Swaps (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) item | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) item | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Jun. 13, 2019 USD ($)
Derivative [Line Items] |  |  |  |  |  |
Amount amortized from AOCL to earnings | $ 402 | $ 748 | $ 1,150 | $ 748 |  |
Amount expected to be amortized from AOCI |  |  | 687 |  |  |
Adjustments on derivatives not classified as hedges |  |  | (849) | 3,057 |  |
Inventories - truck chassis floor plan | 6,999 |  | 6,999 |  | $ 8,146 |
Mark-to-market adjustment interest expense | 204 | $ 897 | (1,998) | $ 2,310 |  |
Interest rate swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Negative fair value | $ 10,170 |  | $ 10,170 |  | 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 | $ 4,110 |  | $ 4,110 |  | 4,075 |
Interest rate swap | Other Noncurrent Liabilities |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Negative fair value | $ 6,060 |  | $ 6,060 |  | $ 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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