Goodwill and Other Intangible Assets, Net - Schedule of Goodwill (Details) - USD ($) $ in Thousands		9 Months Ended
	Aug. 14, 2025	Sep. 30, 2026
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 135,173
Goodwill acquired–AWM		91,082
Measurement period adjustment–APA		5,510
Goodwill, ending balance		231,765
Array Legacy Operations
Goodwill [Roll Forward]
Goodwill, beginning balance		135,173
Goodwill, ending balance		231,765
Accumulated impairment		51,900
STI Operations
Goodwill [Roll Forward]
Goodwill, beginning balance		0
Goodwill acquired–AWM		0
Measurement period adjustment–APA		0
Goodwill, ending balance		0
Accumulated impairment		338,600
AWM
Goodwill [Roll Forward]
Goodwill, ending balance	$ 91,100
AWM | Unallocated Goodwill
Goodwill [Roll Forward]
Goodwill acquired–AWM		91,082
APA
Goodwill [Roll Forward]
Goodwill, beginning balance		65,446
Measurement period adjustment–APA	$ 5,510	5,500
Goodwill, ending balance		70,956
APA | Array Legacy Operations
Goodwill [Roll Forward]
Measurement period adjustment–APA		$ 5,510