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Investments - Schedule of Amortized Cost and Fair Value on Mortgage-Backed and Asset-Backed Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,162,919	$ 1,152,852
Fair Value	1,064,330	1,014,626
Mortgage-backed and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	334,460	327,166
Fair Value	303,146	287,607
Agency | Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	165,507	157,672
Fair Value	145,686	133,928
Non-agency | Mortgage-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	63,729	60,328
Fair Value	55,102	50,478
Auto loan receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	53,686	62,128
Fair Value	52,869	59,370
Credit card receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,414	657
Fair Value	3,428	612
Other receivables | Asset-backed securities:
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	48,124	46,381
Fair Value	$ 46,061	$ 43,219

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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