Accumulated Other Comprehensive Income (Loss) - Changes In Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 687,310	$ 683,137	$ 695,295	$ 697,648
Net unrealized gains (losses) on investments in securities
Ending balance	685,236	682,685	685,236	682,685
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(28,845)	(33,494)	(28,013)	(34,355)
Net unrealized gains (losses) on investments in securities
Ending balance	(29,432)	(29,221)	(29,432)	(29,221)
Foreign currency translation adjustments
Foreign currency translation adjustments
Other comprehensive (loss) income before reclassifications	(678)	348	(1,603)	875
Amounts reclassified from accumulated other comprehensive loss	0	3,906	0	3,906
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications	(678)	348	(1,603)	875
Amounts reclassified from accumulated other comprehensive loss	0	3,906	0	3,906
Net current-period other comprehensive income (loss)	(678)	4,254	(1,603)	4,781
Net unrealized gains (losses) on investments in securities
Foreign currency translation adjustments
Other comprehensive (loss) income before reclassifications	91	19	184	353
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications	91	19	184	353
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	$ 91	$ 19	$ 184	$ 353

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