Comprehensive Income - Schedule of Changes in Balances of Each Component of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (188,436)	$ (160,046)
Other comprehensive income before reclassifications	(50,367)	14,271
Amounts reclassified from accumulated other comprehensive income	4,901	(1,149)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	55,268	(15,420)
Ending Balance	(133,168)	(175,466)
Income Tax Expense (Benefit)	(617)	130
Realized Investment Gains (Losses)	(3)	1
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(21,136)	(20,196)
Other comprehensive income before reclassifications	(14,147)	6,434
Amounts reclassified from accumulated other comprehensive income	4,459	(583)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	18,606	(7,017)
Ending Balance	(2,530)	(27,213)
Realized Investment Gains (Losses)	5,957	(568)
Accumulated Translation Adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(166,191)	(144,036)
Other comprehensive income before reclassifications	(36,220)	7,770
Amounts reclassified from accumulated other comprehensive income	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	36,220	(7,770)
Ending Balance	(129,971)	(151,806)
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(1,109)	(753)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	442	(253)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	442	(253)
Ending Balance	(667)	(1,006)
Other Postretirement Benefits Plan [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	0	4,939
Other comprehensive income before reclassifications	0	67
Amounts reclassified from accumulated other comprehensive income	0	(313)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	(380)
Ending Balance	0	4,559
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Income Tax Expense (Benefit)	(1,498)	(15)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Postretirement Benefits Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	(210)
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income	0	(313)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0	103
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	(313)
Income Tax Expense (Benefit)	$ 0	$ 0