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Acquisitions - Schedules of Loans Acquired (Details) - USD ($) $ in Millions | Apr. 08, 2019 | Aug. 16, 2018
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Idaho Independent Bank [Member] |  |
Business Acquisition [Line Items] |  |
Contractually required principal and interest payments | $ 24.1 |
Contractual cash flows not expected to be collected (“non-accretable discount”) | 3.9 |
Cash flows expected to be collected | 20.2 |
Interest component of cash flows expected to be collected (“accretable discount”) | 3.4 |
Fair value of acquired credit-impaired loans | 16.8 |
Contractually required principal and interest payments | 398.7 |
Contractual cash flows not expected to be collected | 15.2 |
Fair value at acquisition | $ 321.5 |
Inland Northwest Bank [Member] |  |
Business Acquisition [Line Items] |  |
Contractually required principal and interest payments |  | $ 27.5
Contractual cash flows not expected to be collected (“non-accretable discount”) |  | 4.4
Cash flows expected to be collected |  | 23.1
Interest component of cash flows expected to be collected (“accretable discount”) |  | 3.2
Fair value of acquired credit-impaired loans |  | 19.9
Contractually required principal and interest payments |  | 894.8
Contractual cash flows not expected to be collected |  | 26.1
Fair value at acquisition |  | $ 693.2

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- Definition The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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