v3.26.1
Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets    
Other short-term investments $ 0 $ 7,233
Debt securities available for sale    
Equity securities with readily determinable fair value not held for trading 2,537 2,548
Securities 2,608,418 2,084,569
Mortgage loans held for sale (at fair value) $ 389 $ 2,932
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable and other assets Accrued interest receivable and other assets
Derivative instruments $ 27,178 $ 36,539
Liabilities    
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts payable, accrued liabilities and other liabilities Accounts payable, accrued liabilities and other liabilities
Derivative instruments $ 25,984 $ 36,053
Fair Value, Measurements, Recurring    
Assets    
Other short-term investments   7,233
Debt securities available for sale    
Debt securities available for sale 2,549,256 2,024,883
Equity securities with readily determinable fair value not held for trading 2,537 2,548
Securities 2,551,793 2,027,431
Mortgage loans held for sale (at fair value) 389 2,932
Bank owned life insurance 265,362 260,644
Mortgage servicing rights (MSRs) 0 1,314
Derivative instruments 27,178 36,539
Assets measured at fair value 2,844,722 2,336,093
Liabilities    
Derivative instruments 25,984 36,053
Fair Value, Measurements, Recurring | U.S Treasury Securities    
Debt securities available for sale    
Debt securities available for sale 218,953 1,000
Fair Value, Measurements, Recurring | U.S. Government agency and sponsored enterprise residential MBS    
Debt securities available for sale    
Debt securities available for sale 2,099,858 1,824,510
Fair Value, Measurements, Recurring | U.S. Government agency and sponsored enterprise commercial MBS    
Debt securities available for sale    
Debt securities available for sale 146,793 152,249
Fair Value, Measurements, Recurring | U.S. Government agency and sponsored enterprise obligations    
Debt securities available for sale    
Debt securities available for sale 81,989 45,455
Fair Value, Measurements, Recurring | Non-agency commercial MBS    
Debt securities available for sale    
Debt securities available for sale   0
Fair Value, Measurements, Recurring | Municipal Bonds    
Debt securities available for sale    
Debt securities available for sale 1,663 1,669
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets    
Other short-term investments   0
Debt securities available for sale    
Debt securities available for sale 0 0
Equity securities with readily determinable fair value not held for trading 2,537 2,548
Securities 2,537 2,548
Mortgage loans held for sale (at fair value) 0 0
Bank owned life insurance 0 0
Mortgage servicing rights (MSRs) 0 0
Derivative instruments 0 0
Assets measured at fair value 2,537 2,548
Liabilities    
Derivative instruments 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S Treasury Securities    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency and sponsored enterprise residential MBS    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency and sponsored enterprise commercial MBS    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency and sponsored enterprise obligations    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency commercial MBS    
Debt securities available for sale    
Debt securities available for sale   0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal Bonds    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)    
Assets    
Other short-term investments   7,233
Debt securities available for sale    
Debt securities available for sale 2,549,256 2,024,883
Equity securities with readily determinable fair value not held for trading 0 0
Securities 2,549,256 2,024,883
Mortgage loans held for sale (at fair value) 389 2,932
Bank owned life insurance 265,362 260,644
Mortgage servicing rights (MSRs) 0 0
Derivative instruments 27,178 36,539
Assets measured at fair value 2,842,185 2,332,231
Liabilities    
Derivative instruments 25,984 36,053
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | U.S Treasury Securities    
Debt securities available for sale    
Debt securities available for sale 218,953 1,000
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | U.S. Government agency and sponsored enterprise residential MBS    
Debt securities available for sale    
Debt securities available for sale 2,099,858 1,824,510
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | U.S. Government agency and sponsored enterprise commercial MBS    
Debt securities available for sale    
Debt securities available for sale 146,793 152,249
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | U.S. Government agency and sponsored enterprise obligations    
Debt securities available for sale    
Debt securities available for sale 81,989 45,455
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | Non-agency commercial MBS    
Debt securities available for sale    
Debt securities available for sale   0
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2) | Municipal Bonds    
Debt securities available for sale    
Debt securities available for sale 1,663 1,669
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)    
Assets    
Other short-term investments   0
Debt securities available for sale    
Debt securities available for sale 0 0
Equity securities with readily determinable fair value not held for trading 0 0
Securities 0 0
Mortgage loans held for sale (at fair value) 0 0
Bank owned life insurance 0 0
Mortgage servicing rights (MSRs) 0 1,314
Derivative instruments 0 0
Assets measured at fair value 0 1,314
Liabilities    
Derivative instruments 0 0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | U.S Treasury Securities    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | U.S. Government agency and sponsored enterprise residential MBS    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | U.S. Government agency and sponsored enterprise commercial MBS    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | U.S. Government agency and sponsored enterprise obligations    
Debt securities available for sale    
Debt securities available for sale 0 0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | Non-agency commercial MBS    
Debt securities available for sale    
Debt securities available for sale   0
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3) | Municipal Bonds    
Debt securities available for sale    
Debt securities available for sale $ 0 $ 0