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Note 17 - Segments - Summarized Financial Information of Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenue |  | $ 159,806 | $ 166,100 | $ 187,561 | $ 102,601 | $ 152,945 | $ 127,636 | $ 157,530 | $ 103,342 | $ 616,068 | $ 541,453 | $ 480,154
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 86,780 | 79,536 | 74,892
Depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 20,938 | 20,316 | 19,737
Assets |  | 596,891 |  |  |  | 572,476 |  |  |  | 596,891 | 572,476 | 579,202
Capital Expenditures |  |  |  |  |  |  |  |  |  | 12,402 | 11,881 | 14,682
Interest expense - net |  |  |  |  |  |  |  |  |  | (11,253) | (11,839) | (20,238)
Depreciation expense |  |  |  |  |  |  |  |  |  | 10,418 | 9,634 | 8,806
Amortization |  |  |  |  |  |  |  |  |  | 10,520 | 10,682 | 10,931
Purchase accounting (1) | [1] |  |  |  |  |  |  |  |  | 0 | 0 | (2,017)
Stock based compensation |  |  |  |  |  |  |  |  |  | 6,730 | 5,794 | 2,830
Impairment charges |  |  |  |  |  |  |  |  |  | 0 | 1,211 | 127,872
Debt modification expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 3,542
Loss on extinguishment of debt |  |  |  |  |  |  |  |  |  | 0 | 4,936 | 0
COVID-19 (2) | [2] |  |  |  |  |  |  |  |  | 48 | 82 | 1,391
Other charges (3) | [3] |  |  |  |  |  |  |  |  | 450 | 770 | 128
Income (Loss) before taxes |  | 13,021 | $ 16,175 | $ 23,090 | $ (4,925) | 10,770 | $ 8,234 | $ 14,919 | $ 665 | 47,361 | 34,588 | (98,829)
Work Truck Attachments [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 382,296 | 325,707 | 252,838
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 78,211 | 77,369 | 62,532
Depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 12,901 | 11,937 | 10,824
Assets |  | 397,557 |  |  |  | 384,566 |  |  |  | 397,557 | 384,566 | 365,210
Capital Expenditures |  |  |  |  |  |  |  |  |  | 9,526 | 10,434 | 13,174
Work Truck Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 233,772 | 215,746 | 227,316
Adjusted EBITDA |  |  |  |  |  |  |  |  |  | 8,569 | 2,167 | 12,360
Depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 8,037 | 8,379 | 8,913
Assets |  | $ 199,334 |  |  |  | $ 187,910 |  |  |  | 199,334 | 187,910 | 213,992
Capital Expenditures |  |  |  |  |  |  |  |  |  | $ 2,876 | $ 1,447 | $ 1,508
[1] | Reflects $17 in reversal of earnout compensation related to Henderson, and $2,000 in reversal of earnout compensation related to Dejana in the year ended December 31, 2020.
[2] | Reflects incremental costs incurred related to the COVID-19 pandemic for the periods presented. Such COVID-19 related costs include increased expenses directly related to the pandemic, and do not include either production related overhead inefficiencies or lost or deferred sales.
[3] | Reflects expenses and accrual reversals for one time, unrelated legal, severance, restructuring and consulting fees for the periods presented.

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