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Note 3 - Business Combinations - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2020 | Jul. 27, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Liabilities |  |  |  |  |
Goodwill |  |  | $ 22,985 | $ 0 |
Bargain purchase gain |  |  | $ 0 | $ 0 | $ (20,080)
Geneva Pipe Company, Inc. [Member] |  |  |  |  |
Assets |  |  |  |  |
Cash and cash equivalents | $ 691 |  |  |  |
Trade and other receivables | 7,089 |  |  |  |
Inventories | 5,673 |  |  |  |
Prepaid expenses and other | 356 |  |  |  |
Property and equipment | 9,096 |  |  |  |
Operating lease right-of-use assets | 21,684 |  |  |  |
Intangible assets | 11,165 |  |  |  |
Total assets acquired | 55,754 |  |  |  |
Liabilities |  |  |  |  |
Accounts payable | 1,395 |  |  |  |
Accrued liabilities | 1,189 |  |  |  |
Operating lease liabilities | 20,454 |  |  |  |
Deferred income taxes | 5,343 |  |  |  |
Other long-term liabilities | 939 |  |  |  |
Total liabilities assumed | 29,320 |  |  |  |
Goodwill | 22,985 |  |  |  |
Total purchase consideration | $ 49,419 |  |  |  |
Ameron Water Transmission Group, LLC [Member] |  |  |  |  |
Assets |  |  |  |  |
Cash and cash equivalents |  | $ 912 |  |  |
Trade and other receivables |  | 8,887 |  |  |
Inventories |  | 7,937 |  |  |
Prepaid expenses and other |  | 3,777 |  |  |
Property and equipment |  | 34,827 |  |  |
Total assets acquired |  | 68,678 |  |  |
Contract assets |  | 12,018 |  |  |
Other assets |  | 320 |  |  |
Liabilities |  |  |  |  |
Accounts payable |  | 5,520 |  |  |
Accrued liabilities |  | 1,599 |  |  |
Deferred income taxes |  | 3,221 |  |  |
Total liabilities assumed |  | 10,463 |  |  |
Total purchase consideration |  | 38,135 |  |  |
Contract liabilities |  | 123 |  |  |
Bargain purchase gain |  | $ (20,080) |  |  |

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- Definition Amount of accrued liabilities, assumed at the acquisition date. + References No definition available. + Details
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- Definition Amount of contract liabilities, assumed at the acquisition date. + References No definition available. + Details
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- Definition Amount of operating lease liabilities assumed at the acquisition date. + References No definition available. + Details
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- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6571-128477 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 (f)(1) -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 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6527-128477 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464 + Details
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- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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