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Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, balance at the beginning of the period | $ 195,132 | [1] | $ 198,022 |  | $ 83,243
Translation adjustment | (2,218) |  | 1,168 |  | 20
Goodwill adjustment |  |  | (4,058) |  |
Goodwill acquired | 9,492 |  |  |  | 114,759
Goodwill, balance at the end of the period | 202,406 |  | 195,132 | [1] | 198,022
Vegetation Management |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, balance at the beginning of the period | 124,981 |  | 126,894 |  | 16,751
Translation adjustment | (1,510) |  | 132 |  | (72)
Goodwill adjustment |  |  | (2,045) |  |
Goodwill acquired | 9,492 |  |  |  | 110,215
Goodwill, balance at the end of the period | 132,963 |  | 124,981 |  | 126,894
Industrial Equipment |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, balance at the beginning of the period | 70,151 |  | 71,128 |  | 66,492
Translation adjustment | (708) |  | 1,036 |  | 92
Goodwill adjustment |  |  | (2,013) |  |
Goodwill acquired | 0 |  |  |  | 4,544
Goodwill, balance at the end of the period | $ 69,443 |  | $ 70,151 |  | $ 71,128
[1] | Years ended December 31, 2020 amounts have been adjusted to reflect the change in inventory accounting method, as described in Note 1 to the Consolidated Financial Statements.

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