Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Trading securities	$ 593,273	$ 647,998
Available for sale securities	1,562,222	2,130,568
Equity securities	197	250
MSR asset	121,688	86,990
Financial liabilities:
Securities sold, not yet purchased	135,968	96,586
Recurring
Financial assets:
Trading securities	593,273	647,998
Available for sale securities	1,562,222	2,130,568
Equity securities	197	250
Loans held for sale	1,372,383	1,782,591
Loans held for investment	9,027
Derivative assets	82,918	48,122
MSR asset	121,688	86,990
Financial liabilities:
Securities sold, not yet purchased	135,968	96,586
Derivative liabilities	26,661	21,816
Recurring \| Level 1
Financial assets:
Trading securities	8,594	8,628
Equity securities	197	250
Financial liabilities:
Securities sold, not yet purchased	68,543	45,973
Recurring \| Level 2
Financial assets:
Trading securities	584,679	639,370
Available for sale securities	1,562,222	2,130,568
Loans held for sale	1,330,651	1,734,875
Derivative assets	82,918	48,122
Financial liabilities:
Securities sold, not yet purchased	67,425	50,613
Derivative liabilities	26,661	21,816
Recurring \| Level 3
Financial assets:
Loans held for sale	41,732	47,716
Loans held for investment	9,027
MSR asset	$ 121,688	$ 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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