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Note 3 - Business Combination - Intangible Assets Acquired (Details) - USD ($) $ in Thousands | Oct. 05, 2021 | Jan. 31, 2020
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Park Environmental Equipment, LLC [Member] |  |
Intangible Asset Acquired, Useful Life (Year) | 10 years 4 months 24 days |
Intangible Asset Acquired, Fair Value | $ 31,000 |
Park Environmental Equipment, LLC [Member] | Customer Relationships [Member] |  |
Intangible Asset Acquired, Useful Life (Year) | 10 years |
Intangible Asset Acquired, Fair Value | $ 19,800 |
Park Environmental Equipment, LLC [Member] | Trademarks and Trade Names [Member] |  |
Intangible Asset Acquired, Useful Life (Year) | 10 years |
Intangible Asset Acquired, Fair Value | $ 9,600 |
Park Environmental Equipment, LLC [Member] | Patents [Member] |  |
Intangible Asset Acquired, Useful Life (Year) | 21 years |
Intangible Asset Acquired, Fair Value | $ 1,300 |
Park Environmental Equipment, LLC [Member] | Backlog [Member] |  |
Intangible Asset Acquired, Useful Life (Year) | 7 months 6 days |
Intangible Asset Acquired, Fair Value | $ 300 |
Geneva Pipe Company, Inc. [Member] |  |
Intangible Asset Acquired, Useful Life (Year) |  | 9 years 10 months 24 days
Intangible Asset Acquired, Fair Value |  | $ 11,165
Geneva Pipe Company, Inc. [Member] | Customer Relationships [Member] |  |
Intangible Asset Acquired, Useful Life (Year) |  | 11 years
Intangible Asset Acquired, Fair Value |  | $ 8,031
Geneva Pipe Company, Inc. [Member] | Trade Names [Member] |  |
Intangible Asset Acquired, Useful Life (Year) |  | 10 years
Intangible Asset Acquired, Fair Value |  | $ 2,093
Geneva Pipe Company, Inc. [Member] | Backlog [Member] |  |
Intangible Asset Acquired, Useful Life (Year) |  | 10 months 24 days
Intangible Asset Acquired, Fair Value |  | $ 1,041

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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