Accumulated Other Comprehensive Loss - Changes In Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 697,648	$ 828,493	$ 644,356
Net unrealized gains (losses) on investments in securities
Balance at end of period	695,295	697,648	828,493
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(34,355)	(16,817)	(3,420)
Net unrealized gains (losses) on investments in securities
Balance at end of period	(28,013)	(34,355)	(16,817)
Foreign currency translation adjustments
Foreign currency translation adjustments
Other comprehensive income (loss) before reclassifications	1,459	(16,278)	(13,278)
Amounts reclassified from accumulated other comprehensive income (loss)	3,906	0	0
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications	1,459	(16,278)	(13,278)
Amounts reclassified from accumulated other comprehensive income (loss)	3,906	0	0
Net current-period other comprehensive income (loss)	5,365	(16,278)	(13,278)
Net unrealized gains (losses) on investments in securities
Foreign currency translation adjustments
Other comprehensive income (loss) before reclassifications	977	(1,260)	(119)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications	977	(1,260)	(119)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Net current-period other comprehensive income (loss)	$ 977	$ (1,260)	$ (119)