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Investment Securities - Summary of Amortized Cost and Approximate Fair Value of Investment Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | $ 840,259 | $ 0
Allowance for Credit Losses | 0 |
Net Carrying Value | 840,259 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (46,446) |
Fair Value | 793,813 |
Asset-backed securities |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 361,107 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 361,107 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (4,974) |
Fair Value | 356,133 |
Agency-guaranteed residential mortgage-backed securities |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 7,189 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 7,189 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (563) |
Fair Value | 6,626 |
Agency-guaranteed commercial mortgage-backed securities |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 1,928 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 1,928 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (104) |
Fair Value | 1,824 |
Agency-guaranteed residential collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 204,495 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 204,495 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (18,376) |
Fair Value | 186,119 |
Agency-guaranteed commercial collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 151,711 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 151,711 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (9,435) |
Fair Value | 142,276 |
Private label collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 113,829 |
Allowance for Credit Losses | 0 |
Net Carrying Value | 113,829 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (12,994) |
Fair Value | $ 100,835 |

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