v3.26.1
Segment Information - Schedule of Financial Performance through Reportable Segments (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Dec. 31, 2025
Dec. 28, 2025
Dec. 29, 2024
Residential Solar Installation [Member]          
Segment Reporting [Line Items]          
Operating revenues $ 31,541,000 $ 36,504,000   $ 160,987,000 $ 67,460,000
Less:          
Cost of revenues 18,011,000 [1] 22,615,000 [2]   88,400,000 [3] 45,266,000
Sales commissions 6,553,000 6,667,000   26,298,000 23,388,000
Sales and marketing 3,539,000 8,522,000   25,154,000 6,827,000
General and administrative 15,833,000 [1] 10,440,000 [2]   58,597,000 [3] 57,641,000 [4]
Segment operating income (loss) (12,395,000) (11,740,000)   (37,462,000) (65,662,000)
New Homes Business [Member]          
Segment Reporting [Line Items]          
Operating revenues 14,625,000 41,909,000   124,595,000 41,282,000
Less:          
Cost of revenues 9,961,000 [1] 28,422,000 [2]   82,288,000 [3] 23,974,000
Sales commissions 1,166,000 1,017,000   5,032,000 1,202,000
Sales and marketing 876,000   3,253,000
General and administrative 11,545,000 [1] 4,456,000 [2]   29,648,000 [3] 18,953,000 [4]
Segment operating income (loss) (8,923,000) 8,014,000   4,374,000 (2,847,000)
Dealer [Member]          
Segment Reporting [Line Items]          
Operating revenues 26,627,000   14,418,000  
Less:          
Cost of revenues 134,000 [1] [2]   100,000 [3]  
Sales commissions 20,845,000   5,679,000  
Sales and marketing 578,000   623,000  
General and administrative 2,947,000 [1] [2]   1,859,000 [3]  
Segment operating income (loss) 2,123,000   6,157,000  
Reportable Subsegments [Member]          
Segment Reporting [Line Items]          
Operating revenues 72,793,000 78,413,000   300,000,000 108,742,000
Gain on troubled debt restructuring         22,337,000
Less:          
Cost of revenues 600   $ 2,200,000    
General and administrative 3,000   7,000,000    
Total 3,600   9,200,000    
Segment operating income (loss) (19,195,000) (3,726,000)   (26,931,000) (68,509,000)
Unallocated amounts:          
Interest expense (6,924,000) (6,041,000)   (25,095,000) (16,223,000)
Interest income   3,000   3,000 19,000
Other non-operating income, net 30,761,000 14,576,000   9,347,000 7,932,000
Loss from continuing operations before taxes 4,642,000 4,812,000   $ (42,676,000) $ (54,444,000)
Residential Solar Installation [Member]          
Less:          
Cost of revenues 500 400 2,000,000    
General and administrative 1,800 1,000 5,300,000    
Total 2,300 1,400 7,300,000    
New Homes Business [Member]          
Less:          
Cost of revenues 100,000    
General and administrative 300 200 800,000    
Total 300 200 900,000    
Dealer [Member]          
Less:          
Cost of revenues 100 100,000    
General and administrative 900 900,000    
Total $ 1,000 $ 1,000,000    
[1] Depreciation and amortization expense in the thirteen week period ended March 29, 2026 was as follows (in millions):
[2] Depreciation and amortization expense in the thirteen week period ended March 30, 2025 was as follows (in millions):
[3] For the year ended December 28, 2025, depreciation and amortization expense was as follows
[4] For the year ended December 29, 2024, depreciation and amortization expense was $2.6 million and $0.1 million for the Residential Solar Installation and New Homes Business reportable segments, respectively.