Comprehensive Income - Schedule of Changes in Balances of Each Component of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (160,047)	$ (252,843)
Other comprehensive income before reclassifications	18,640	(73,806)
Amounts reclassified from accumulated other comprehensive income	(9,750)	18,991
Income Tax Expense (Benefit)	924	989	$ 462
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(28,390)	92,797
Ending Balance	(188,436)	(160,047)	(252,843)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(20,197)	(71,381)
Other comprehensive income before reclassifications	(3,583)	(30,623)
Amounts reclassified from accumulated other comprehensive income	(4,522)	20,561
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(939)	51,184
Ending Balance	(21,136)	(20,197)	(71,381)
Accumulated Translation Adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(144,035)	(184,167)
Other comprehensive income before reclassifications	22,156	(40,132)
Amounts reclassified from accumulated other comprehensive income	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(22,156)	40,132
Ending Balance	(166,191)	(144,035)	(184,167)
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(753)	(665)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	(356)	(88)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(356)	(88)
Ending Balance	(1,109)	(753)	(665)
Other Postretirement Benefits Plan [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	4,939	3,370
Other comprehensive income before reclassifications	67	(3,051)
Amounts reclassified from accumulated other comprehensive income	(4,872)	(1,482)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(4,939)	1,569
Ending Balance	$ 0	$ 4,939	$ 3,370