Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
Dec. 31, 2021 |
|
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||||
| Beginning balance of allowance for off-balance sheet credit losses | $ 16,492 | $ 17,147 | $ 17,265 | $ 17,434 | |
| Provision for off-balance sheet credit losses | 1,489 | (400) | 716 | (687) | |
| Ending balance of allowance for off-balance sheet credit losses | 17,981 | $ 16,747 | 17,981 | $ 16,747 | |
| Commitments to extend credit | |||||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||||
| Off-balance sheet liability | 10,194,949 | 10,194,949 | $ 9,445,763 | ||
| Standby letters of credit | |||||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||||
| Off-balance sheet liability | $ 378,217 | $ 378,217 | $ 357,672 | ||