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Intangible Assets, Net and Goodwill - Schedule of Goodwill Activity (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Schedule of Goodwill Activity [Line Items]    
Balance $ 18,476
Measurement period adjustments (18,476)  
Goodwill acquired in business combinations 62,630 18,476
Goodwill 62,630 18,476
Accumulated impairment losses
Balance 62,630 18,476
Residential Solar Installation [Member]    
Schedule of Goodwill Activity [Line Items]    
Balance 18,276
Measurement period adjustments (18,276)  
Goodwill acquired in business combinations 30,808 18,276
Goodwill 30,808 18,276
Accumulated impairment losses
Balance 30,808 18,276
New Homes [Member]    
Schedule of Goodwill Activity [Line Items]    
Balance 200
Measurement period adjustments (200)  
Goodwill acquired in business combinations 200
Goodwill 200
Accumulated impairment losses
Balance 200
Dealer [Member]    
Schedule of Goodwill Activity [Line Items]    
Balance
Measurement period adjustments  
Goodwill acquired in business combinations 31,822
Goodwill 31,822
Accumulated impairment losses
Balance $ 31,822