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Summary of Significant Accounting Policies - Credit Losses (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2020
Balance | $ 2,929 | $ 1,487 |  |
Adoption | 0 | 0 |  |
Additions charged to earnings | 67 | 1,081 | $ 1,361 |
Writeoffs | (10) | (428) |  |
Changes to reserve, net | (16) | 39 |  |
Balance at the end of the period | 2,970 | 2,929 | 1,487 |
Work Truck Attachments segment |  |  |  |
Balance | 1,480 | 600 |  |
Additions charged to earnings | (60) | 401 |  |
Writeoffs |  | (12) |  |
Changes to reserve, net | 10 | 91 |  |
Balance at the end of the period | 1,430 | 1,480 | 600 |
Work Truck Solutions |  |  |  |
Balance | 1,449 | 887 |  |
Additions charged to earnings | 127 | 680 |  |
Writeoffs | (10) | (416) |  |
Changes to reserve, net | (26) | (52) |  |
Balance at the end of the period | $ 1,540 | $ 1,449 | $ 887 |
ASU 2016-13 | Restatement adjustment |  |  |  |
Adoption |  |  |  | $ 750
ASU 2016-13 | Restatement adjustment | Work Truck Attachments segment |  |  |  |
Adoption |  |  |  | 400
ASU 2016-13 | Restatement adjustment | Work Truck Solutions |  |  |  |
Adoption |  |  |  | $ 350

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