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INVESTMENTS - Schedule of Amortized Cost and Fair Value on Mortgage-Backed and Asset-Backed Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,392,573	$ 1,353,532
Fair Value	1,324,338	1,269,079
Mortgage-backed and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	401,745	387,538
Fair Value	377,522	357,030
Agency | Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	201,962	194,400
Fair Value	183,942	171,531
Non-agency | Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	65,451	58,722
Fair Value	59,567	51,940
Auto loan receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	61,928	60,087
Fair Value	62,283	60,326
Credit card receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,432	9,702
Fair Value	10,491	9,769
Other receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	61,972	64,627
Fair Value	$ 61,239	$ 63,464

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