v3.26.1
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets    
Fair Value $ 2,595,966 $ 1,906,535
Derivatives 9,626 11,369
Loans held for sale – fair value option 5,510 2,745
Loans receivable, fair value option 17,656,866 16,307,551
Liabilities    
Derivative liabilities 14,443 15,799
Fair Value, Measurements, Recurring    
Assets    
Derivatives 9,626 11,369
Loans held for sale – fair value option 5,510 2,745
Assets, fair value 4,350,723 3,635,723
Liabilities    
Derivative liabilities 14,443 15,799
Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 50,179 33,100
Asset-backed securities    
Assets    
Fair Value 301,492 237,813
Asset-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 301,492 237,813
Agency-guaranteed residential mortgage-backed securities    
Assets    
Fair Value 750,995 413,761
Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 750,995 413,761
Agency-guaranteed residential collateralized mortgage obligations    
Assets    
Fair Value 844,866 493,507
Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 844,866 493,507
Agency-guaranteed commercial collateralized mortgage obligations    
Assets    
Fair Value 112,025 115,576
Agency-guaranteed commercial collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 112,025 115,576
Corporate notes    
Assets    
Fair Value 236,879 285,858
Corporate notes | Fair Value, Measurements, Recurring    
Assets    
Fair Value 236,879 285,858
Private label collateralized mortgage obligations    
Assets    
Fair Value 349,709 360,020
Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 349,709 360,020
Mortgage Finance | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 1,654,795 1,612,997
Installment Loans | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 84,826 102,077
Collateral-dependent loans | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 37,611 20,668
Other real estate owned | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 12,568 12,432
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets    
Fair Value 0 0
Derivatives 0 0
Loans receivable, fair value option 0 0
Liabilities    
Derivative liabilities 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring    
Assets    
Derivatives 0 0
Loans held for sale – fair value option 0 0
Assets, fair value 0 0
Liabilities    
Derivative liabilities 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency-guaranteed commercial collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage Finance | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Installment Loans | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2)    
Assets    
Fair Value 2,294,474 1,668,722
Derivatives 9,533 11,325
Loans receivable, fair value option 1,654,795 1,612,997
Liabilities    
Derivative liabilities 14,443 15,799
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring    
Assets    
Derivatives 9,533 11,325
Loans held for sale – fair value option 2,528 1,851
Assets, fair value 3,961,330 3,294,895
Liabilities    
Derivative liabilities 14,443 15,799
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2) | Asset-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Other Observable Inputs (Level 2) | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 750,995 413,761
Significant Other Observable Inputs (Level 2) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 844,866 493,507
Significant Other Observable Inputs (Level 2) | Agency-guaranteed commercial collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 112,025 115,576
Significant Other Observable Inputs (Level 2) | Corporate notes | Fair Value, Measurements, Recurring    
Assets    
Fair Value 236,879 285,858
Significant Other Observable Inputs (Level 2) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 349,709 360,020
Significant Other Observable Inputs (Level 2) | Mortgage Finance | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 1,654,795 1,612,997
Significant Other Observable Inputs (Level 2) | Installment Loans | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 0 0
Significant Other Observable Inputs (Level 2) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2) | Other real estate owned | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 0 0
Significant Unobservable Inputs (Level 3)    
Assets    
Fair Value 301,492 237,813
Derivatives 93 44
Loans receivable, fair value option 16,002,071 14,694,554
Liabilities    
Derivative liabilities 0 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring    
Assets    
Derivatives 93 44
Loans held for sale – fair value option 2,982 894
Assets, fair value 389,393 340,828
Liabilities    
Derivative liabilities 0 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 50,179 33,100
Significant Unobservable Inputs (Level 3) | Asset-backed securities    
Assets    
Fair Value 301,492 237,813
Significant Unobservable Inputs (Level 3) | Asset-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 301,492 237,813
Significant Unobservable Inputs (Level 3) | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Unobservable Inputs (Level 3) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Unobservable Inputs (Level 3) | Agency-guaranteed commercial collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Unobservable Inputs (Level 3) | Corporate notes | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Unobservable Inputs (Level 3) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring    
Assets    
Fair Value 0 0
Significant Unobservable Inputs (Level 3) | Mortgage Finance | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 0 0
Significant Unobservable Inputs (Level 3) | Installment Loans | Fair Value, Measurements, Recurring    
Assets    
Loans receivable, fair value option 84,826 102,077
Significant Unobservable Inputs (Level 3) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value 37,611 20,668
Significant Unobservable Inputs (Level 3) | Other real estate owned | Fair Value, Measurements, Nonrecurring    
Assets    
Assets, fair value $ 12,568 $ 12,432