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Business Combinations (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended	12 Months Ended
	Nov. 21, 2025	Sep. 24, 2025	Sep. 21, 2025	Sep. 29, 2024	Dec. 28, 2025	Dec. 29, 2024
Business Combination [Line Items]
Revenue					$ 300,000	$ 108,742
Income before income taxes from continuing operation					$ (42,676)	$ (54,444)
Price per share (in Dollars per share)					$ 2.5
Senior unsecured convertible notes			$ 22,000		$ 80,000
Common shares issued (in Shares)					111,334,959	73,784,645
Deferred consideration	$ 16,900
Closing share price (in Dollars per share)	$ 1.61
Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Aggregate cash consideration		$ 57,800
Royalty rate					1.00%
Principal amount		$ 20,000
Trading day			30 days
Business days			2 days
Senior unsecured convertible notes					$ 20,000
Sunder Energy LLC Acquisition[ Member] | Common Stock [Member]
Business Combination [Line Items]
Price per share (in Dollars per share)		$ 1.71
Common stock of acquisition			$ 17,100
SunPower Acquisition [Member]
Business Combination [Line Items]
Aggregate cash consideration				$ 54,500
Royalty rate					1.00%
Weighted average redevelopment period					19 months
Revenue					$ 83,800
Income before income taxes from continuing operation					6,500
SunPower Acquisition [Member] | General and Administrative Expense [Member]
Business Combination [Line Items]
Acquisition cost						$ 7,200
SunPower Acquisition [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Outstanding membership interest		$ 20,700
Sunder Energy Acquisition [Member]
Business Combination [Line Items]
Revenue					14,400
Income before income taxes from continuing operation					$ 6,200
Sunder Energy Acquisition [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Additional paid-in capital			$ 5,700
Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Common stock to be issued (in Shares)		3,333,334
12-Month Anniversary [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Common stock to be issued (in Shares)		3,333,333
18-Month Anniversary [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Common stock to be issued (in Shares)			3,333,333
3 Month Anniversary [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Deferred consideration percentage			50.00%
6 Month Anniversary [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Deferred consideration percentage			50.00%
Ambia [Member]
Business Combination [Line Items]
Royalty rate					1.00%
Revenue					$ 7,000
Income before income taxes from continuing operation					2,800
Outstanding membership interest	$ 10,800
Common shares issued (in Shares)	10,243,924
Trading volume weighted average price period	20 years
Ambia [Member] | Subsequent Tranches One [Member]
Business Combination [Line Items]
Outstanding membership interest	$ 10,800
Ambia [Member] | Common Stock [Member]
Business Combination [Line Items]
Additional paid-in capital	$ 9,375
September 2025 Notes [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Senior unsecured convertible notes					$ 22,000
Senior unsecured convertible notes rate					7.00%
Maximum [Member] | Ambia [Member]
Business Combination [Line Items]
Deferred common share issuable par value (in Dollars per share)	$ 2.8102
Minimum [Member]
Business Combination [Line Items]
Deferred common share issuable par value (in Dollars per share)	$ 1.4988
Common Stock [Member]
Business Combination [Line Items]
Common shares issued (in Shares)					626.9592
Common Stock [Member] | Sunder Energy Acquisition [Member] | Sunder Energy LLC Acquisition[ Member]
Business Combination [Line Items]
Common stock to be issued (in Shares)		10,000,000

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