Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial assets:
Trading securities	$ 641,864	$ 647,998
Available for sale securities	1,584,724	2,130,568
Equity securities	209	250
MSR asset	156,539	86,990
Financial liabilities:
Securities sold, not yet purchased	99,515	96,586
Recurring
Financial assets:
Trading securities	641,864	647,998
Available for sale securities	1,584,724	2,130,568
Equity securities	209	250
Loans held for sale	863,427	1,782,591
Loans held for investment	8,912
Derivative assets	141,536	48,122
MSR asset	156,539	86,990
Financial liabilities:
Securities sold, not yet purchased	99,515	96,586
Derivative liabilities	45,032	21,816
Recurring \| Level 1
Financial assets:
Trading securities	5,259	8,628
Equity securities	209	250
Financial liabilities:
Securities sold, not yet purchased	65,370	45,973
Recurring \| Level 2
Financial assets:
Trading securities	636,605	639,370
Available for sale securities	1,584,724	2,130,568
Loans held for sale	826,013	1,734,875
Derivative assets	141,536	48,122
Financial liabilities:
Securities sold, not yet purchased	34,145	50,613
Derivative liabilities	45,032	21,816
Recurring \| Level 3
Financial assets:
Loans held for sale	37,414	47,716
Loans held for investment	8,912
MSR asset	$ 156,539	$ 86,990

Amount 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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