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Related Party Transactions - Other (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Related Party Transactions
Expenses incurred	$ 53,931	$ 51,610	$ 94,275	$ 96,050
Accounts payable	75,784		75,784		$ 84,255
Related Party \| Westrock Group
Related Party Transactions
Expenses incurred	200	$ 300	200	$ 600
Related Party \| Accrued expenses and other current liabilities \| Westrock Group
Related Party Transactions
Short-term related party debt	$ 100		$ 100		$ 100