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Investment Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Fair Value | $ 2,129,461 | $ 1,277,728
Asset Pledged as Collateral |  |
Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Amortized Cost | 338,532 | 305,579
Fair Value | 291,650 | 305,179
Washington and Oregon state public deposits | Asset Pledged as Collateral |  |
Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Amortized Cost | 158,082 | 128,216
Fair Value | 138,003 | 130,217
Federal Reserve Bank credit facility | Asset Pledged as Collateral |  |
Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Amortized Cost | 60,763 | 61,057
Fair Value | 49,037 | 59,674
Securities sold under agreement to repurchase | Asset Pledged as Collateral |  |
Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Amortized Cost | 64,087 | 59,887
Fair Value | 55,825 | 59,655
Other securities pledged | Asset Pledged as Collateral |  |
Scheduled of amortized cost and fair value of securities pledged as collateral |  |
Amortized Cost | 55,600 | 56,419
Fair Value | $ 48,785 | $ 55,633

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- Definition Debt Securities, Amortized Cost + References No definition available. + Details
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- Definition Scheduled of amortized cost and fair value of securities pledged as collateral. + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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