v3.26.1
Disclosures About Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial assets:    
Securities held-to-maturity $ 550,416 $ 605,929
Accrued interest receivable 57,473 56,291
Derivative assets, netting adjustments (16,149) (13,431)
Financial liabilities:    
Borrowed funds, netting adjustments (13,250) (1,900)
Subordinated debt 114,800 114,800
Junior subordinated debentures 130,223 130,093
Borrowed funds and derivative liabilities, netting adjustments (16,149) (13,431)
Recurring    
Financial assets:    
Securities available-for-sale 199,728 178,261
Derivative assets, netting adjustments (16,149) (13,431)
Total financial assets 1,835,042 1,598,873
Financial liabilities:    
Derivative liabilities, netting adjustments (2,899) (11,531)
Not Hedging    
Financial assets:    
Derivative assets 22,012 25,922
Financial liabilities:    
Derivative liabilities 20,780 26,673
Interest rate lock commitments | Recurring    
Financial assets:    
Derivative assets 673 617
Forward commitments | Recurring    
Financial assets:    
Derivative assets 78 95
Foreign exchange swaps | Recurring    
Financial assets:    
Derivative assets   4
Interest rate swap agreements | Hedging    
Financial assets:    
Derivative assets, netting adjustments (609) (51)
Financial liabilities:    
Derivative liabilities, netting adjustments (58) (1,280)
Interest rate swap agreements | Hedging | Recurring    
Financial assets:    
Derivative assets 0 0
Derivative assets, netting adjustments (609) (51)
Financial liabilities:    
Derivative liabilities 0 0
Derivative liabilities, netting adjustments (58) (1,280)
Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative assets, netting adjustments (15,540) (13,380)
Financial liabilities:    
Derivative liabilities, netting adjustments (2,841) (10,251)
Interest rate swap agreements | Not Hedging | Recurring    
Financial assets:    
Derivative assets 5,112 11,775
Derivative assets, netting adjustments (15,540) (13,380)
Financial liabilities:    
Derivative liabilities 17,867 15,115
Derivative liabilities, netting adjustments (2,841) (10,251)
Risk participation agreements | Recurring    
Financial liabilities:    
Derivative liabilities 14 27
Level 1    
Financial assets:    
Cash and cash equivalents 248,499 233,647
Securities available-for-sale 0 0
Securities held-to-maturity 0 0
Loans receivable, net 0 0
Loans held-for-sale 0 0
Accrued interest receivable 57,473 56,291
FHLB stock 0 0
Total financial assets 305,972 289,938
Financial liabilities:    
Savings and checking deposits 11,334,008 11,026,319
Time deposits 0 0
Borrowed funds before netting 623,864 446,836
Subordinated debt 0 0
Junior subordinated debentures 0 0
Accrued interest payable 8,385 6,846
Total financial liabilities 11,966,257 11,480,001
Level 1 | Recurring    
Financial assets:    
Securities available-for-sale 0 0
Total financial assets 0 0
Level 1 | Interest rate lock commitments    
Financial assets:    
Derivative assets 0 0
Level 1 | Interest rate lock commitments | Recurring    
Financial assets:    
Derivative assets 0 0
Level 1 | Forward commitments    
Financial assets:    
Derivative assets 0 0
Level 1 | Forward commitments | Recurring    
Financial assets:    
Derivative assets 0 0
Level 1 | Foreign exchange swaps    
Financial assets:    
Derivative assets   0
Level 1 | Foreign exchange swaps | Recurring    
Financial assets:    
Derivative assets   0
Level 1 | Interest rate swap agreements | Hedging    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 1 | Interest rate swap agreements | Hedging | Recurring    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 1 | Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 1 | Interest rate swap agreements | Not Hedging | Recurring    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 1 | Risk participation agreements    
Financial liabilities:    
Derivative liabilities 0 0
Level 1 | Risk participation agreements | Recurring    
Financial liabilities:    
Derivative liabilities 0 0
Level 2    
Financial assets:    
Cash and cash equivalents 0 0
Securities available-for-sale 1,829,179 1,586,382
Securities held-to-maturity 550,416 605,929
Loans receivable, net 0 0
Loans held-for-sale 0
Accrued interest receivable 0 0
FHLB stock 0 0
Total financial assets 2,400,934 2,217,616
Financial liabilities:    
Savings and checking deposits 0 0
Time deposits 0 0
Borrowed funds before netting 0 0
Subordinated debt 114,800 114,800
Junior subordinated debentures 0 0
Accrued interest payable 0 0
Total financial liabilities 135,580 141,473
Level 2 | Recurring    
Financial assets:    
Securities available-for-sale 199,728 178,261
Total financial assets 1,850,518 1,611,687
Level 2 | Interest rate lock commitments    
Financial assets:    
Derivative assets 0 0
Level 2 | Interest rate lock commitments | Recurring    
Financial assets:    
Derivative assets 0 0
Level 2 | Forward commitments    
Financial assets:    
Derivative assets 78 95
Level 2 | Forward commitments | Recurring    
Financial assets:    
Derivative assets 78 95
Level 2 | Foreign exchange swaps    
Financial assets:    
Derivative assets   4
Level 2 | Foreign exchange swaps | Recurring    
Financial assets:    
Derivative assets   4
Level 2 | Interest rate swap agreements | Hedging    
Financial assets:    
Derivative asset before netting 609 51
Financial liabilities:    
Derivative liabilities, before netting 58 1,280
Level 2 | Interest rate swap agreements | Hedging | Recurring    
Financial assets:    
Derivative asset before netting 609 51
Financial liabilities:    
Derivative liabilities, before netting 58 1,280
Level 2 | Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative asset before netting 20,652 25,155
Financial liabilities:    
Derivative liabilities, before netting 20,708 25,366
Level 2 | Interest rate swap agreements | Not Hedging | Recurring    
Financial assets:    
Derivative asset before netting 20,652 25,155
Financial liabilities:    
Derivative liabilities, before netting 20,708 25,366
Level 2 | Risk participation agreements    
Financial liabilities:    
Derivative liabilities 14 27
Level 2 | Risk participation agreements | Recurring    
Financial liabilities:    
Derivative liabilities 14 27
Level 3    
Financial assets:    
Cash and cash equivalents 0 0
Securities available-for-sale 0 0
Securities held-to-maturity 0 0
Loans receivable, net 12,628,052 12,418,154
Loans held-for-sale 15,391 22,437
Accrued interest receivable 0 0
FHLB stock 0 0
Total financial assets 12,644,116 12,441,208
Financial liabilities:    
Savings and checking deposits 0 0
Time deposits 2,827,204 2,909,139
Borrowed funds before netting 0 0
Subordinated debt 0 0
Junior subordinated debentures 126,664 120,237
Accrued interest payable 0 0
Total financial liabilities 2,953,868 3,029,376
Level 3 | Recurring    
Financial assets:    
Securities available-for-sale 0 0
Total financial assets 673 617
Level 3 | Interest rate lock commitments    
Financial assets:    
Derivative assets 673 617
Level 3 | Interest rate lock commitments | Recurring    
Financial assets:    
Derivative assets 673 617
Level 3 | Forward commitments    
Financial assets:    
Derivative assets 0 0
Level 3 | Forward commitments | Recurring    
Financial assets:    
Derivative assets 0 0
Level 3 | Foreign exchange swaps    
Financial assets:    
Derivative assets   0
Level 3 | Foreign exchange swaps | Recurring    
Financial assets:    
Derivative assets   0
Level 3 | Interest rate swap agreements | Hedging    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 3 | Interest rate swap agreements | Hedging | Recurring    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 3 | Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 3 | Interest rate swap agreements | Not Hedging | Recurring    
Financial assets:    
Derivative asset before netting 0 0
Financial liabilities:    
Derivative liabilities, before netting 0 0
Level 3 | Risk participation agreements    
Financial liabilities:    
Derivative liabilities 0 0
Level 3 | Risk participation agreements | Recurring    
Financial liabilities:    
Derivative liabilities 0 0
Carrying amount    
Financial assets:    
Cash and cash equivalents 248,499 233,647
Securities available-for-sale 1,829,179 1,586,382
Securities held-to-maturity 630,802 683,369
Loans receivable, net 13,079,906 12,857,104
Loans held-for-sale 15,391 22,437
Accrued interest receivable 57,473 56,291
FHLB stock 43,345 36,628
Total financial assets 15,910,458 15,488,349
Financial liabilities:    
Savings and checking deposits 11,334,008 11,026,319
Time deposits 2,827,810 2,916,698
Borrowed funds 612,075 446,283
Subordinated debt 114,800 114,800
Junior subordinated debentures 130,223 130,093
Accrued interest payable 8,385 6,846
Total financial liabilities 15,045,182 14,656,181
Carrying amount | Interest rate lock commitments    
Financial assets:    
Derivative assets 673 617
Carrying amount | Forward commitments    
Financial assets:    
Derivative assets 78 95
Carrying amount | Foreign exchange swaps    
Financial assets:    
Derivative assets   4
Carrying amount | Interest rate swap agreements | Hedging    
Financial assets:    
Derivative assets 0 0
Financial liabilities:    
Derivative liabilities 0 0
Carrying amount | Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative assets 5,112 11,775
Financial liabilities:    
Derivative liabilities 17,867 15,115
Carrying amount | Risk participation agreements    
Financial liabilities:    
Derivative liabilities 14 27
Estimated fair value    
Financial assets:    
Cash and cash equivalents 248,499 233,647
Securities available-for-sale 1,829,179 1,586,382
Securities held-to-maturity 550,416 605,929
Loans receivable, net 12,628,052 12,418,154
Loans held-for-sale 15,391 22,437
Accrued interest receivable 57,473 56,291
FHLB stock 43,345 36,628
Total financial assets 15,378,218 14,971,959
Financial liabilities:    
Savings and checking deposits 11,334,008 11,026,319
Time deposits 2,827,204 2,909,139
Borrowed funds 610,614 444,936
Subordinated debt 114,800 114,800
Junior subordinated debentures 126,664 120,237
Accrued interest payable 8,385 6,846
Total financial liabilities 15,039,556 14,637,419
Estimated fair value | Interest rate lock commitments    
Financial assets:    
Derivative assets 673 617
Estimated fair value | Forward commitments    
Financial assets:    
Derivative assets 78 95
Estimated fair value | Foreign exchange swaps    
Financial assets:    
Derivative assets   4
Estimated fair value | Interest rate swap agreements | Hedging    
Financial assets:    
Derivative assets 0 0
Financial liabilities:    
Derivative liabilities 0 0
Estimated fair value | Interest rate swap agreements | Not Hedging    
Financial assets:    
Derivative assets 5,112 11,775
Financial liabilities:    
Derivative liabilities 17,867 15,115
Estimated fair value | Risk participation agreements    
Financial liabilities:    
Derivative liabilities $ 14 $ 27