v3.26.3
Note 5 - Acquisitions and Disposal (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 05, 2026
May 08, 2026
Aug. 14, 2025
Aug. 01, 2025
Jul. 01, 2025
Mar. 14, 2025
Sep. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Jul. 31, 2025
Business Combination, Acquisition-Related Cost, Expense             $ 100     $ 900 $ 100 $ 1,300    
Goodwill, Measurement Period Adjustment                     (222)      
Gain (Loss) on Disposition of Business             0     0 1,347 0    
Revenues             38,851     37,173 117,252 96,441    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest             (3,324)     (4,461) (5,297) (11,113)    
Disposal Group, Not Discontinued Operation, Name [Extensible Enumeration]   Trinity [Member]                        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [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             0     2,700 2,800 7,000    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest             0     400 100 700    
Southside Plumbing [Member]                            
Subsidiary, Ownership Percentage, Noncontrolling Owner     20.00%                      
Romeo Computer Company, Inc. [Member]                            
Business Combination, Consideration Transferred, Net $ 2,400                          
Business Combination, Consideration Transferred, Equity Interest 0                          
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value $ 0                          
M.L.C. Plumbing, LLC [Member]                            
Business Combination, Consideration Transferred, Net           $ 5,000                
Business Acquisition, Percentage of Voting Interests Acquired           100.00%                
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred                   $ 100        
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, Acquiree's Revenue since Acquisition Date, Actual                       4,900    
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual                       $ 3,000    
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     $ 875                      
Southside Plumbing [Member] | Measurement Input, Discount Rate [Member]                            
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value, Measurement Input     0.20