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v3.23.3

Borrowings - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Oct. 01, 2022 USD ($) item
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Amount of repurchase agreements | $ 20,300 |  | $ 20,300 |  | $ 20,200 |
Fair Value | 620,445 |  | 620,445 |  | 706,289 |
Remaining balance on the note | 54,123 |  | 54,123 |  | 53,890 |
Debt issuance costs | 300 |  | 300 |  |  |
Federal home loan bank, advances, general debt obligations, maximum amount available | 1,700,000 |  | 1,700,000 |  |  |
Loans receivable | 7,384,992 |  | 7,384,992 |  | 7,130,916 |
Interest expense related to FHLB advances | 4,400 | $ 0 | 17,100 | $ 0 |  |
Bank of Jackson Hole |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Number of subordinated note purchase agreements assumed | item |  |  |  |  |  | 3
Asset Pledged as Collateral |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Fair Value | 0 |  | 0 |  | 0 |
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase [Member] |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Fair Value | $ 29,900 |  | $ 29,900 |  | $ 32,000 |
Financing Receivable, Pledging Purpose [Extensible Enumeration] | Noninterest-bearing Deposit Liabilities |  | Noninterest-bearing Deposit Liabilities |  | Noninterest-bearing Deposit Liabilities |
Excess collateral pledged | $ 9,600 |  | $ 9,600 |  | $ 11,800 |
Asset Pledged as Collateral | Federal Home Loan Bank Advances [Member] |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Fair Value | $ 0 |  | $ 0 |  | 0 |
Financing Receivable, Pledging Purpose [Extensible Enumeration] | Noninterest-bearing Deposit Liabilities |  | Noninterest-bearing Deposit Liabilities |  |  |
Loans receivable | $ 2,500,000 |  | $ 2,500,000 |  | 2,000,000 |
Fixed-To-Floating Rate Note, Maturing November 2031 |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Subordinated note | 40,000 |  | 40,000 |  |  |
Remaining balance on the note | 39,700 |  | 39,700 |  |  |
Fixed-To-Floating Rate Note, Maturing November 2031 | Other liabilities |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Interest expense | 300 |  | 900 |  |  |
Fixed-To-Floating Rate Note, Maturing June 2031 | Bank of Jackson Hole |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Subordinated note |  |  |  |  |  | $ 15,000
Fair value adjustment from the acquisition | 500 |  | 500 |  |  |
Remaining balance on the note | 14,500 |  | 14,500 |  |  |
Fixed-To-Floating Rate Note, Maturing June 2031 | Other liabilities | Bank of Jackson Hole |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Interest expense | 100 |  | 400 |  |  |
Line of credit [Member] |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
FHLB advances | $ 316,800 |  | $ 316,800 |  | $ 385,000 |
Subordinated Debt [Member] | Fixed-To-Floating Rate Note, Maturing November 2031 |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  | 3.00% |  |  |
Variable rate basis (as a percent) |  |  | 203.00% |  |  |
Redemption price as a percent of principal |  |  | 100.00% |  |  |
Subordinated Debt [Member] | Fixed-To-Floating Rate Note, Maturing June 2031 | Bank of Jackson Hole |  |  |  |  |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  | 3.75% |  |  |
Variable rate basis (as a percent) |  |  | 306.00% |  |  |
Redemption price as a percent of principal |  |  | 100.00% |  |  |

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