INVESTMENTS - Schedule of AFS Allowance for Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Expected credit loss on available-for-sale debt securities at beginning of period	$ 631	$ 1,018
Provision for (or reversal of) credit loss expense	250	(387)
Expected credit loss on available-for-sale debt securities at end of period	881	631
Corporate Bonds
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Expected credit loss on available-for-sale debt securities at beginning of period	568	894
Provision for (or reversal of) credit loss expense	311	(326)
Expected credit loss on available-for-sale debt securities at end of period	879	568
Mortgage-Backed and Asset-Backed Securities
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Expected credit loss on available-for-sale debt securities at beginning of period	0	0
Provision for (or reversal of) credit loss expense	1	0
Expected credit loss on available-for-sale debt securities at end of period	1	0
Municipal Bonds
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Expected credit loss on available-for-sale debt securities at beginning of period	1	3
Provision for (or reversal of) credit loss expense	0	(2)
Expected credit loss on available-for-sale debt securities at end of period	1	1
Redeemable Preferred Stock
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Expected credit loss on available-for-sale debt securities at beginning of period	62	121
Provision for (or reversal of) credit loss expense	(62)	(59)
Expected credit loss on available-for-sale debt securities at end of period	$ 0	$ 62