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Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Loans Modified as Troubled Debt Restructurings (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) Contract
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 3
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 627
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 627
Troubled debt restructurings, Outstanding Recorded Investment | 587
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Commercial Real Estate Owner Occupied [Member] | Interest rate reduction [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Commercial Real Estate Owner Occupied [Member] | Change in Amortization Period or Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Commercial and Industrial [Member] | Interest rate reduction [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Commercial and Industrial [Member] | Change in Amortization Period or Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 38
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 38
Troubled debt restructurings, Outstanding Recorded Investment | 20
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Dairy & Livestock and Agribusiness [Member] | Interest rate reduction [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Dairy & Livestock and Agribusiness [Member] | Change in Amortization Period or Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
SFR Mortgage [Member] | Interest rate reduction [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
SFR Mortgage [Member] | Change in Amortization Period or Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 311
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 311
Troubled debt restructurings, Outstanding Recorded Investment | 300
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Consumer [Member] | Interest rate reduction [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 0
Troubled debt restructurings, Outstanding Recorded Investment | 0
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0
Consumer [Member] | Change in Amortization Period or Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, Number of Loans | Contract | 1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment | $ 278
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment | 278
Troubled debt restructurings, Outstanding Recorded Investment | 267
Troubled debt restructurings, Financial Effect Resulting From Modifications | $ 0

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