OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Reclassifications Out of AOCI Into Net Income Available to Common Shareholders (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Impairment losses	$ (12,568)	$ (22)	$ (1,486)
Income (loss) before income taxes and interest in income (loss) of equity method investments	243,125	648,909	(129,133)
Income tax (expense) benefit	(22,037)	(62,384)	12,321
Net income (loss)	223,083	618,609	(120,424)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on available for sale investments
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Other realized gains (losses)	(322,726)	94,771	91,866
Impairment losses	(12,568)	(22)	(1,486)
Income (loss) before income taxes and interest in income (loss) of equity method investments	(335,294)	94,749	90,380
Income tax (expense) benefit	30,369	(7,635)	(12,368)
Net income (loss)	$ (304,925)	$ 87,114	$ 78,012