Other Debt - Summary of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Interest expense — portfolio related	$ 28,752	$ 20,566	$ 52,308	$ 41,399
Interest expense — corporate debt	4,182	4,309	21,322	11,658
Total interest expense	32,934	24,875	73,630	53,057
Warehouse and Repurchase Facilities
Debt Instrument [Line Items]
Interest expense — portfolio related	4,115	2,361	7,880	4,067
Securitizations
Debt Instrument [Line Items]
Interest expense — portfolio related	$ 24,637	$ 18,205	$ 44,428	$ 37,332

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Aggregate amount of interest expense on all borrowings.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The aggregate interest expense incurred on the following for deposits in domestic offices: (1) transaction accounts (NOW, and telephone and preauthorized transfer accounts), (2) money market deposits and (3) savings deposits.

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