Exit Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Exit costs included in accrued liabilities in consolidated balance sheet
Accrued severance costs	$ 0	$ 0	$ 567
Exit Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	395,680	423,742
Accrued contract obligations-changes in estimate	57,735	26,183
Accretion of discount	42,205	44,154
Payments	(95,631)	(98,399)
Ending balance	399,989	395,680	423,742
Termination Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	0	10
Accrued contract obligations-changes in estimate	0	0
Accretion of discount	0	0
Payments	0	(10)
Ending balance	$ 0	$ 0	$ 10