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Loans and Allowance for Credit Losses on Loans - Amortized cost basis and ACL (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | $ 10,766,225 | $ 10,199,553 |  |
ACL-Loans | 75,712 | 71,752 | $ 51,838 | $ 44,014
Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 123,355 | 128,627 |  |
ACL-Loans | 8,022 | 7,964 |  |
Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 118,070 | 122,334 |  |
Accounts Receivable Or Equipment |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 2,628 | 3,603 |  |
Other Collateralized Assets |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 2,657 | 2,690 |  |
Residential real estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 1,321,300 | 1,324,305 |  |
ACL-Loans | 6,905 | 7,323 | 7,378 | 7,029
Residential real estate | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 1,272 | 1,560 |  |
ACL-Loans | 8 | 21 |  |
Residential real estate | Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 1,272 | 1,557 |  |
Residential real estate | Other Collateralized Assets |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis |  | 3 |  |
Multi-family financing |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 4,096,606 | 4,006,160 |  |
ACL-Loans | 28,664 | 26,874 | 19,851 | 16,781
Multi-family financing | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 53,200 | 46,575 |  |
ACL-Loans | 581 | 521 |  |
Multi-family financing | Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 53,200 | 46,575 |  |
Healthcare financing |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 2,464,685 | 2,356,689 |  |
ACL-Loans | 24,587 | 22,454 | 11,753 | 9,882
Healthcare financing | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 63,283 | 73,909 |  |
ACL-Loans | 5,652 | 6,289 |  |
Healthcare financing | Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 63,283 | 73,909 |  |
Commercial and commercial real estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 1,666,751 | 1,643,081 |  |
ACL-Loans | 11,990 | 12,243 | 10,482 | 8,326
Commercial and commercial real estate | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 5,453 | 6,433 |  |
ACL-Loans | 1,780 | 1,132 |  |
Commercial and commercial real estate | Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 168 | 146 |  |
Commercial and commercial real estate | Accounts Receivable Or Equipment |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 2,628 | 3,603 |  |
Commercial and commercial real estate | Other Collateralized Assets |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 2,657 | 2,684 |  |
Agricultural production and real estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 65,977 | 103,150 |  |
ACL-Loans | 450 | 619 | 543 | 565
Agricultural production and real estate | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 147 | 147 |  |
ACL-Loans | 1 | 1 |  |
Agricultural production and real estate | Real Estate |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 147 | 147 |  |
Consumer and margin loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis | 7,912 | 13,700 |  |
ACL-Loans | $ 94 | 169 | $ 167 | $ 182
Consumer and margin loans | Collateral Dependent Loans |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis |  | 3 |  |
Consumer and margin loans | Other Collateralized Assets |  |  |  |
Loans and Allowance for Credit Losses on Loans |  |  |  |
Amortized Cost Basis |  | $ 3 |  |

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