v3.26.1
Fair Value of Financial Instruments - Schedule of Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
ASSETS    
Cash and cash equivalents $ 380,696 $ 417,058
Investment securities available-for-sale (at fair value) 585,533 528,639
Investment securities held-to-maturity, fair value 696,725 597,449
Held-to-maturity securities 758,223 651,732
Equity securities with readily determinable fair values 332 5,059
Loans receivable 9,663,781 7,345,941
Loans held for sale 26,486 25,695
LIABILITIES    
Time deposits 1,269,658 1,149,771
Securities sold under agreements to repurchase 20,239 17,350
Long-term debt 202,003 54,540
Federal Home Loan Bank advances 125,000  
Carrying amount | Level 1    
ASSETS    
Cash and cash equivalents 380,696 417,058
Equity securities with readily determinable fair values 332 5,059
Carrying amount | Level 2    
ASSETS    
FRB and FHLB stock 42,854 24,641
Loans held for sale 26,486 25,695
Accrued interest receivable 51,892 41,951
LIABILITIES    
Deposit transaction accounts 9,119,775 7,142,863
Time deposits 1,269,658 1,149,771
Securities sold under agreements to repurchase 20,239 17,350
Long-term debt 204,676 54,719
Federal Home Loan Bank advances 125,000  
Accrued interest payable 20,230 18,017
Carrying amount | Level 3    
ASSETS    
Loans receivable 9,774,052 7,433,356
Estimated fair value | Level 1    
ASSETS    
Cash and cash equivalents 380,696 417,058
Equity securities with readily determinable fair values 332 5,059
Estimated fair value | Level 2    
ASSETS    
FRB and FHLB stock 42,854 24,641
Loans held for sale 26,486 25,695
Accrued interest receivable 51,892 41,951
LIABILITIES    
Deposit transaction accounts 9,119,775 7,142,863
Time deposits 1,271,253 1,157,231
Securities sold under agreements to repurchase 20,239 17,350
Long-term debt 202,003 53,165
Federal Home Loan Bank advances 125,000  
Accrued interest payable 20,230 18,017
Estimated fair value | Level 3    
ASSETS    
Loans receivable 9,525,099 7,274,904
U.S. Treasury securities    
ASSETS    
Investment securities available-for-sale (at fair value) 53,675 74,226
Investment securities held-to-maturity, fair value   24,851
Held-to-maturity securities   24,900
U.S. Treasury securities | Carrying amount | Level 1    
ASSETS    
Investment securities available-for-sale (at fair value) 53,675 74,226
Investment securities held-to-maturity, fair value   24,900
U.S. Treasury securities | Estimated fair value | Level 1    
ASSETS    
Investment securities available-for-sale (at fair value) 53,675 74,226
Investment securities held-to-maturity, fair value   24,851
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises    
ASSETS    
Investment securities available-for-sale (at fair value) 201,135 157,665
Investment securities held-to-maturity, fair value 212,335 213,974
Held-to-maturity securities 236,687 236,535
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises | Carrying amount | Level 2    
ASSETS    
Investment securities available-for-sale (at fair value) 201,135 157,665
Held-to-maturity securities 236,687 236,535
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises | Estimated fair value | Level 2    
ASSETS    
Investment securities available-for-sale (at fair value) 201,135 157,665
Held-to-maturity securities 212,335 213,974
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises    
ASSETS    
Investment securities available-for-sale (at fair value) 330,472 296,026
Investment securities held-to-maturity, fair value 484,390 358,624
Held-to-maturity securities 521,536 390,297
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises | Carrying amount | Level 2    
ASSETS    
Investment securities available-for-sale (at fair value) 330,472 296,026
Held-to-maturity securities 521,536 390,297
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises | Estimated fair value | Level 2    
ASSETS    
Investment securities available-for-sale (at fair value) 330,472 296,026
Held-to-maturity securities 484,390 358,624
Other securities    
ASSETS    
Investment securities available-for-sale (at fair value) 251 722
Other securities | Carrying amount | Level 3    
ASSETS    
Investment securities available-for-sale (at fair value) 251 722
Other securities | Estimated fair value | Level 3    
ASSETS    
Investment securities available-for-sale (at fair value) 251 722
Interest rate swap | Carrying amount | Level 2    
ASSETS    
Derivative asset $ 30,298 $ 29,150
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
LIABILITIES    
Derivative liability $ 6,695 $ 9,093
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities
Interest rate swap | Estimated fair value | Level 2    
ASSETS    
Derivative asset $ 30,298 $ 29,150
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
LIABILITIES    
Derivative liability $ 6,695 $ 9,093
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities
Mortgage banking derivatives | Carrying amount | Level 3    
ASSETS    
Derivative asset $ 352 $ 283
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
LIABILITIES    
Derivative liability $ 72 $ 88
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities
Mortgage banking derivatives | Estimated fair value | Level 3    
ASSETS    
Derivative asset $ 352 $ 283
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
LIABILITIES    
Derivative liability $ 72 $ 88
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities