OTHER COMPREHENSIVE INCOME (LOSS) - Tax Effects of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Before tax amount
Unrealized gains (losses) arising during the period, net of reclassification adjustment	$ 135,560	$ (51,963)
Foreign currency translation adjustment	(156)	(8,951)
Total other comprehensive income (loss), before tax	135,404	(60,914)
Income tax (expense) benefit
Unrealized gains (losses) arising during the period, net of reclassification adjustment	(20,223)	14,901
Foreign currency translation adjustment	0	0
Income tax (expense) benefit	(20,223)	14,901
Net of tax amount
Unrealized gains (losses) arising during the period, net of reclassification adjustment	115,337	(37,062)
Foreign currency translation adjustment	(156)	(8,951)
Total other comprehensive income (loss), net of tax	115,181	(46,013)
Available for sale investments
Before tax amount
Adjustment for reclassification of net realized (gains) losses and impairment losses recognized in net income (loss)	34,310	24,879
Income tax (expense) benefit
Adjustment for reclassification of net realized (gains) losses and impairment losses recognized in net income (loss)	(6,223)	(1,464)
Net of tax amount
Adjustment for reclassification of net realized (gains) losses and impairment losses recognized in net income (loss)	28,087	23,415
Unrealized gains (losses) arising during the period, net of reclassification adjustment	115,337	(37,062)
Available for sale investments \| Unrealized gains (losses) arising during the period for which an allowance for expected credit losses has not been recognized
Before tax amount
Unrealized gains (losses) arising during the period	101,007	(76,408)
Income tax (expense) benefit
Unrealized gains (losses) arising during the period	(13,949)	16,349
Net of tax amount
Unrealized gains (losses) arising during the period	87,058	(60,059)
Available for sale investments \| Unrealized gains (losses) arising during the period for which an allowance for expected credit losses has been recognized
Before tax amount
Unrealized gains (losses) arising during the period	243	(434)
Income tax (expense) benefit
Unrealized gains (losses) arising during the period	(51)	16
Net of tax amount
Unrealized gains (losses) arising during the period	$ 192	$ (418)

Amount, before tax and after reclassification adjustment, of gain (loss) in value of unsold investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after tax and reclassification adjustment, of gain (loss) in value of unsold investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent.