Deposits - Summary of Deposit Balances (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Deposit Liability [Line Items] | ||
| Time deposits | $ 2,023,750 | |
| Interest-bearing deposit accounts | 1,146,769 | $ 1,092,252 |
| Money market deposit accounts | 1,041,921 | 945,313 |
| Savings accounts | 913,816 | 887,402 |
| Governmental deposit accounts | 755,584 | 739,939 |
| Interest-bearing | 5,881,910 | 6,159,155 |
| Non-interest-bearing deposits | 1,560,184 | 1,545,428 |
| Total deposits | 7,442,094 | 7,704,583 |
| Brokered deposits | ||
| Deposit Liability [Line Items] | ||
| Time deposits | 192,155 | 510,458 |
| Retail certificates of deposit ("CDs") | ||
| Deposit Liability [Line Items] | ||
| $100 or more | 1,046,668 | 1,143,787 |
| Less than $100 | 784,997 | 840,004 |
| Time deposits | $ 1,831,665 | $ 1,983,791 |
| X | ||||||||||
- Definition Deposits, Governmental No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The aggregate of all domestic and foreign interest-bearing deposit liabilities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of interest-bearing domestic checking deposit liabilities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of time deposit liabilities, including certificates of deposit. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|