v3.26.3
Fair Value Measurements - Estimated Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financial assets:    
Held to maturity securities $ 653,508 $ 674,890
Loans held for investment, net 8,713,214 8,220,415
Broker-dealer and clearing organization receivables 1,764,729 1,588,882
Financial liabilities:    
Broker-dealer and clearing organization payables 1,558,183 1,518,503
Notes Payable 148,762 148,587
Carrying Value    
Financial assets:    
Cash and cash equivalents 1,205,694 1,232,594
Assets segregated for regulatory purposes 17,984 20,211
Securities purchased under agreements to resell 119,534 55,977
Held to maturity securities 740,235 728,329
Loans held for sale 72,783 63,987
Loans held for investment, net 8,713,214 8,220,415
Broker-dealer and clearing organization receivables 1,764,729 1,588,882
Other assets 73,997 70,079
Financial liabilities:    
Deposits 11,034,849 10,878,080
Broker-dealer and clearing organization payables 1,558,183 1,518,503
Short-term borrowings 825,220 676,882
Notes Payable 148,762 148,587
Other liabilities 8,434 7,489
Fair Value    
Financial assets:    
Cash and cash equivalents 1,205,694 1,232,594
Assets segregated for regulatory purposes 17,984 20,211
Securities purchased under agreements to resell 119,534 55,977
Held to maturity securities 653,508 674,890
Loans held for sale 73,361 65,549
Loans held for investment, net 8,731,115 8,392,700
Broker-dealer and clearing organization receivables 1,764,729 1,588,882
Other assets 73,997 70,079
Financial liabilities:    
Deposits 11,025,582 10,871,788
Broker-dealer and clearing organization payables 1,558,183 1,518,503
Short-term borrowings 825,220 676,882
Notes Payable 145,980 144,323
Other liabilities 8,434 7,489
Fair Value | Level 1    
Financial assets:    
Cash and cash equivalents 1,205,694 1,232,594
Assets segregated for regulatory purposes 17,984 20,211
Fair Value | Level 2    
Financial assets:    
Securities purchased under agreements to resell 119,534 55,977
Held to maturity securities 653,508 674,890
Loans held for sale 33,500 19,251
Loans held for investment, net 390,348 344,533
Broker-dealer and clearing organization receivables 1,764,729 1,588,882
Other assets 73,997 70,079
Financial liabilities:    
Deposits 11,025,582 10,871,788
Broker-dealer and clearing organization payables 1,558,183 1,518,503
Short-term borrowings 825,220 676,882
Notes Payable 145,980 144,323
Other liabilities 8,434 7,489
Fair Value | Level 3    
Financial assets:    
Loans held for sale 39,861 46,298
Loans held for investment, net $ 8,340,767 $ 8,048,167