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Note 5 - Acquisitions and Discontinued Operations (Details Textual) - USD ($) $ in Thousands |  |  |  |  |  |  |  | 2 Months Ended | 3 Months Ended | 7 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 14, 2025 | Aug. 01, 2025 | Jul. 31, 2025 | Jul. 01, 2025 | Mar. 14, 2025 | Sep. 26, 2024 | Aug. 16, 2024 | Sep. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Goodwill |  |  |  |  |  |  |  | $ 69,544 | $ 69,544 | $ 69,544 |  |  |  | $ 69,544 | $ 69,544 |  | $ 56,524
Goodwill, Measurement Period Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (225) |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | 0 |  | $ (216) |  |  | 0 | $ (620) |
VA Lafayette [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  | $ 1,300 |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, Assumption of Mortgages |  |  |  |  |  |  | 11,800 |  |  |  |  |  |  |  |  |  |
Proceeds from Divestiture of Businesses |  |  |  |  |  |  | $ 1,100 |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | (200) |  |  | $ (400) |  | (600) |  |
Southside Plumbing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Ownership Percentage, Noncontrolling Owner | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Roundhouse Electric & Equipment Co. Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | $ 23,529 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 9,070 |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interest |  |  |  | 3,328 |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  | 4,900 |  |  |  |  |  |  |
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |
Business Combination, Acquisition-Related Cost, Expense |  |  |  |  |  |  |  |  |  | 500 |  |  |  |  | 500 |  |
Roundhouse Electric & Equipment Co. Inc. [Member] | Seller Phantom Equity Award [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interest |  |  |  | 3,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Roundhouse Electric & Equipment Co. Inc. [Member] | Service Fee Receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  |  | $ 4,259 |  |  |  |  |  |  |  |  |  |  |  |  |
Advanced Plumbing and Drain [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  | $ 3,900 | $ 3,862 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 600 | 594 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  |  |  |  |  |  |  | 1,200 |  |  |  |  |  |  |  |  |
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  |  |  |  |  |  |  | (100) |  |  |  |  |  |  |  |  |
Business Combination, Acquisition-Related Cost, Expense |  |  |  |  |  |  |  |  |  | 200 |  |  |  |  | 200 |  |
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount |  | 1,500 | 1,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  | 800 |  |  |  |  |  | 800 | 800 | 800 |  |  |  | 800 | 800 |  |
Advanced Plumbing and Drain [Member] | Service Fee Receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current |  | $ 500 | $ 503 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Southside Plumbing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 4,650 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 2,587 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current | 334 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  |  |  |  |  |  |  |  | 500 |  |  |  |  |  |  |  |
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  |  |  |  |  |  |  |  | (200) |  |  |  |  |  |  |  |
Business Combination, Acquisition-Related Cost, Expense |  |  |  |  |  |  |  |  |  | 200 |  |  |  |  | 200 |  |
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount | 1,125 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | 200 |  |  |  |  |  |  | $ 200 | $ 200 | 200 |  |  |  | 200 | 200 |  |
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value | 925 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Southside Plumbing [Member] | Service Fee Receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current | $ 300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
M.L.C. Plumbing, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  | $ 4,960 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 995 |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  |  |  | 46 |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,700 |  |  |
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100 |  |  |
Business Combination, Acquisition-Related Cost, Expense |  |  |  |  |  |  |  |  |  | 100 |  |  |  |  | 500 |  |
Business Combination, Consideration Transferred, Net |  |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred |  |  |  |  | 31 |  |  |  |  |  |  |  |  |  |  |  |
M.L.C. Plumbing, LLC [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  |  |  | $ 100 |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred |  |  |  |  |  |  |  |  |  |  | $ 100 |  |  |  |  |  |
Image Solutions, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  | $ 20,045 |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 6,261 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  |  |  |  | 575 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred |  |  |  |  |  | (309) |  |  |  |  |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period |  |  |  |  |  |  |  |  |  | $ 300 |  |  |  |  |  |  |
Goodwill, Measurement Period Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100 |  |
Image Solutions, LLC [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  | $ 20,400 |  |  |  |  |  |  |  |  |  |  |

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