v3.26.1
Note 5 - Acquisitions and Disposal (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
May 08, 2026
Aug. 14, 2025
Aug. 01, 2025
Jul. 01, 2025
Mar. 14, 2025
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Jul. 31, 2025
Business Combination, Acquisition-Related Cost, Expense                 $ 100     $ 500    
Goodwill, Measurement Period Adjustment                     $ (222)      
Gain (Loss) on Disposition of Business           $ 1,347     0   1,347 0    
Revenues           39,442     30,919   78,401 59,268    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest           342     (3,296)   (1,973) (6,652)    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Trinity [Member]                            
Disposal Group, Including Discontinued Operation, Consideration $ 8,000                          
Proceeds from Divestiture of Businesses 5,000                          
Noncash or Part Noncash Divestiture, Amount of Consideration Received 3,000                          
Notes Receivable, Fair Value Disclosure $ 1,500                          
Gain (Loss) on Disposition of Business           1,300                
Revenues           1,000     2,500   2,800 4,300    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest           100     300   100 $ 300    
Southside Plumbing [Member]                            
Subsidiary, Ownership Percentage, Noncontrolling Owner   20.00%                        
M.L.C. Plumbing, LLC [Member]                            
Business Acquisition, Percentage of Voting Interests Acquired         100.00%                  
Business Combination, Consideration Transferred, Net         $ 5,000                  
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred                 $ 100          
Business Combination, Acquiree's Revenue since Acquisition Date, Actual                   $ 2,000        
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual                   $ 200        
Business Combination, Consideration Transferred, Equity Interest         0                  
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value         $ 0                  
Roundhouse Electric & Equipment Co. Inc. [Member]                            
Business Acquisition, Percentage of Voting Interests Acquired       100.00%                    
Business Combination, Consideration Transferred, Before Adjustments       $ 23,500                    
Funds Held in Escrow, Claims Indemnification               $ 800     100      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period               100            
Goodwill, Measurement Period Adjustment                     (200)      
Business Combination, Consideration Transferred, Equity Interest       3,328                    
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value       $ 0                    
Roundhouse Electric & Equipment Co. Inc. [Member] | Seller Phantom Equity Award [Member]                            
Business Combination, Consideration Transferred, Equity Interest                         $ 3,300  
Advanced Plumbing and Drain [Member]                            
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred             $ 100              
Business Combination, Consideration Transferred, Before Adjustments     $ 3,900                      
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount     1,500                     $ 1,500
Business Combination, Consideration Transferred, Equity Interest     0                      
Business Combination, Contingent Consideration, Liability     800     800   800     800   800  
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value     $ 0                      
Southside Plumbing [Member]                            
Business Acquisition, Percentage of Voting Interests Acquired   80.00%                        
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred             $ 100              
Business Combination, Consideration Transferred, Before Adjustments   $ 4,700                        
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount   1,125                        
Business Combination, Consideration Transferred, Equity Interest   0                        
Business Combination, Contingent Consideration, Liability   200       $ 200   $ 200     $ 200   $ 200  
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value   $ 900                        
Southside Plumbing [Member] | Measurement Input, Discount Rate [Member]                            
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value, Measurement Input   0.20