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Note 15 - Acquisitions (Details Textual) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 13, 2021 | Nov. 01, 2021 | Oct. 18, 2021 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 31, 2020
Payments to Acquire Businesses, Gross |  |  |  | $ 269,332 | $ 10,168 |
Goodwill, Ending Balance |  |  |  | 370,331 | $ 292,142 | $ 292,142
Asset Purchase Agreement With Summit [Member] |  |  |  |  |  |
Business Combination, Consideration Transferred, Total | $ 205,300 |  |  |  |  |
Business Combination, Consideration Transferred, Liabilities Incurred | 102,000 |  |  |  |  |
Payments to Acquire Real Estate, Total | $ 57,000 |  |  |  |  |
Goodwill, Ending Balance |  |  |  | $ 73,710 |  |
Illinois Truck Centre, Inc. [Member] |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 2,700 |  |  |  |
Goodwill, Ending Balance |  | $ 1,000 |  |  |  |
Commercial Engine Service, Inc. [Member] |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 4,300 |  |  |
Goodwill, Ending Balance |  |  | $ 3,500 |  |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
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