INVESTMENTS - Schedule of Amortized Cost and Fair Value on Mortgage-Backed and Asset-Backed Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,449,624	$ 1,353,532
Fair Value	1,395,029	1,269,079
Mortgage-backed and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	419,884	387,538
Fair Value	397,272	357,030
Agency \| Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	215,261	194,400
Fair Value	197,451	171,531
Non-agency \| Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	66,749	58,722
Fair Value	61,946	51,940
Auto loan receivables \| Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	67,409	60,087
Fair Value	67,849	60,326
Credit card receivables \| Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,513	9,702
Fair Value	7,583	9,769
Other receivables \| Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	62,952	64,627
Fair Value	$ 62,443	$ 63,464