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v3.22.2

Investment Securities (Narrative) (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) Security | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) Security | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) Security
Schedule Of Investments [Line Items] |  |  |  |  |
Securities pledged as collateral | $ 815,800,000 |  | $ 815,800,000 |  | $ 637,600,000
Number of security positions, unrealized loss position | Security | 207 |  | 207 |  | 116
Number of security positions, unrealized loss position for more than 12 months | Security | 55 |  | 55 |  | 28
Securities, 12 months or longer, Fair Value | $ 305,309,000 |  | $ 305,309,000 |  | $ 172,180,000
Securities, 12 months or longer, Unrealized Losses | $ 49,235,000 |  | $ 49,235,000 |  | $ 4,727,000
Number of security positions, unrealized loss position for less than 12 months | Security | 152 |  | 152 |  | 88
Securities, Less than 12 months, Fair Value | $ 750,814,000 |  | $ 750,814,000 |  | $ 773,484,000
Securities, Less than 12 months, Unrealized Losses | 77,422,000 |  | 77,422,000 |  | 10,039,000
Available for sale securities, allowance for credit loss | 0 |  | 0 |  | 0
Securities held to maturity, Amortized Cost | 204,938,000 |  | 204,938,000 |  | 205,586,000
Investment securities, past due | 3,710,490,000 |  | 3,710,490,000 |  | 3,631,355,000
Investment securities, nonaccrual | 6,548,000 |  | 6,548,000 |  | 11,369,000
Total Past Due [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Investment securities, past due | 12,392,000 |  | 12,392,000 |  | 9,467,000
Municipal Bonds [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Securities held to maturity, Amortized Cost | 98,600,000 |  | 98,600,000 |  | 105,600,000
Internally rated held-to-maturity securities | 7,400,000 |  | 7,400,000 |  | 5,800,000
Maximum [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Securities, 12 months or longer, Unrealized Losses | 49,200,000 |  | 49,200,000 |  | 4,700,000
Available for Sale Securities [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Accrued interest receivable | 2,200,000 |  | 2,200,000 |  | 2,100,000
Held To Maturity Investment Securities [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Accrued interest receivable | 733,000 |  | 733,000 |  | 696,000
Held To Maturity Investment Securities [Member] | Total Past Due [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Investment securities, past due | 0 |  | 0 |  | $ 0
Held To Maturity Investment Securities [Member] | Maximum [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Credit loss expense | $ 1,000 | $ 1,000 | $ 1,000 | $ (1,000) |

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