Segment and Geographic Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Segment revenue	$ 1,284,141	$ 915,807	$ 1,576,551
Product cost	882,262	578,551	1,110,952
Inventory valuation charge	29,516	0	0
Amortization of developed technology and backlog	17,520	14,558	14,558
Depreciation	3,569	2,135	1,348
Other costs	52,721	22,886	34,142
Gross profit	298,553	297,677	415,551
Total operating expenses	(327,548)	(524,682)	(201,427)
Total other expense	(222)	(23,571)	(36,967)
Income (loss) before income taxes	(29,217)	(250,576)	177,157
Segment assets	1,451,792	1,425,999	1,706,741
Capital expenditures	21,972	7,305	16,989
Depreciation and amortization	47,288	52,779	54,826
Interest income	11,852	16,777	8,330
Interest expense	27,331	34,825	44,229
Manufacturing Production Credits, 45X
Segment Reporting Information [Line Items]
Product cost includes 45X benefits realized	173,600	137,800	9,300
Array Legacy Operations
Segment Reporting Information [Line Items]
Segment revenue	1,070,478	661,629	1,172,827
Product cost	704,429	353,034	805,174
Inventory valuation charge	0
Amortization of developed technology and backlog	17,520	14,558	14,558
Depreciation	3,569	2,045	1,348
Other costs	44,968	21,961	34,142
Gross profit	299,992	270,031	317,605
Total operating expenses	0	0	0
Total other expense	0	0	0
Segment assets	1,235,937	1,018,487	868,697
Capital expenditures	21,077	6,423	15,748
Depreciation and amortization	35,846	27,303	26,840
Interest income	10,912	12,767	3,985
Interest expense	24,996	32,516	40,982
Outbound freight	43,800	21,600	33,500
STI Operations
Segment Reporting Information [Line Items]
Segment revenue	213,663	254,178	403,724
Product cost	177,833	225,517	305,778
Inventory valuation charge	29,516
Amortization of developed technology and backlog	0	0	0
Depreciation	0	90	0
Other costs	7,753	925	0
Gross profit	(1,439)	27,646	97,946
Total operating expenses	0	0	0
Total other expense	0	0	0
Segment assets	215,855	407,512	838,044
Capital expenditures	895	882	1,241
Depreciation and amortization	11,442	25,476	27,986
Interest income	940	4,010	4,345
Interest expense	$ 2,335	$ 2,309	$ 3,247