Employee Benefit Expenses - Additional information (Details)	12 Months Ended
Dec. 31, 2025 USD ($) Employee	Dec. 31, 2024 USD ($) Employee
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Number of Employees \| Employee	1,235	1,283
HMH Holding BV And Subsidiaries [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost \| $	$ 7.2	$ 5.8

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details