Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Segment revenue	$ 393,491	$ 231,406	$ 1,058,097	$ 640,575
Product cost	269,147	140,528	726,080	385,468
Amortization of developed technology and backlog	4,434	3,639	11,713	10,918
Depreciation	778	602	1,973	1,531
Other costs	13,461	8,322	39,108	23,300
Gross profit	105,671	78,315	279,223	219,358
Total operating expenses	(60,220)	(210,990)	(160,112)	(304,017)
Total other income (expense), net	(2,007)	(4,829)	4,492	(15,868)
Income before income taxes	43,444	(137,504)	123,603	(100,527)
Segment assets	1,611,161	1,563,104	1,611,161	1,563,104
Capital expenditures	5,513	1,077	14,496	5,604
Depreciation and amortization	12,169	13,198	31,636	39,933
Interest income	2,977	4,223	10,096	12,685
Interest expense	5,046	8,264	21,849	25,818
Array Legacy Operations
Segment Reporting Information [Line Items]
Segment revenue	353,374	160,266	858,474	459,807
Product cost	233,575	84,474	560,535	238,628
Amortization of developed technology and backlog	4,434	3,639	11,713	10,918
Depreciation	845	602	1,973	1,480
Other costs	12,393	5,825	32,440	16,663
Gross profit	102,127	65,726	251,813	192,118
Total operating expenses	0	0	0	0
Total other income (expense), net	0	0	0	0
Segment assets	1,211,117	898,159	1,211,117	898,159
Capital expenditures	5,211	986	13,922	4,283
Depreciation and amortization	9,209	6,903	23,134	20,428
Interest income	2,866	3,415	9,513	8,816
Interest expense	4,362	7,734	19,905	24,134
Outbound freight	12,000	5,700	31,800	16,400
STI Operations
Segment Reporting Information [Line Items]
Segment revenue	40,117	71,140	199,623	180,768
Product cost	35,572	56,054	165,545	146,840
Amortization of developed technology and backlog	0	0	0	0
Depreciation	(67)	0	0	51
Other costs	1,068	2,497	6,668	6,637
Gross profit	3,544	12,589	27,410	27,240
Total operating expenses	0	0	0	0
Total other income (expense), net	0	0	0	0
Segment assets	400,044	664,945	400,044	664,945
Capital expenditures	302	91	574	1,321
Depreciation and amortization	2,960	6,295	8,502	19,505
Interest income	111	808	583	3,869
Interest expense	$ 684	$ 530	$ 1,944	$ 1,684