Fresh Start Accounting - Stepping-up to fair value of intangible assets (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Jul. 31, 2025	Dec. 31, 2024
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net	$ 344,080	$ 320,773	$ 132,842
Trade names-others
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		2,875
Customer relationships
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		264,000
Internally developed software
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		37,800
Purchased software
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		15,008
Outsourced contract costs
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		1,090
Predecessor
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		119,032
Predecessor | Trade names-others
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		5,300
Predecessor | Customer relationships
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		90,344
Predecessor | Internally developed software
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		7,290
Predecessor | Purchased software
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		15,008
Predecessor | Outsourced contract costs
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		1,090
Fresh Start Adjustments
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		201,741
Fresh Start Adjustments | Trade names-others
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		(2,425)
Fresh Start Adjustments | Customer relationships
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		173,656
Fresh Start Adjustments | Internally developed software
Reorganization, Chapter 11 [Line Items]
Intangible Assets, net		$ 30,510