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Acquired SJB Assets and FDIC Loss Sharing Asset - Summary of PCI Loans and Lease Finance Receivables (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
--- | --- | --- | ---
Real estate: |  |  |
Less: Purchase accounting discount | $ 0 |  |
Gross PCI loans, net of discount | 17,260 |  | $ 36,548
Less: Allowance for PCI loan losses | (205) |  | (431)
PCI Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial and industrial | 459 | $ 934 |
SBA | 1,286 | 1,383 |
Real estate: |  |  |
Commercial real estate | 14,979 | 27,431 |
Construction | 0 | 0 |
SFR mortgage | 150 | 162 |
Dairy & livestock and agribusiness | 200 | 770 |
Municipal lease finance receivables | 0 | 0 |
Consumer and other loans | 186 | 228 |
Gross PCI loans | 17,260 | 30,908 |
Less: Purchase accounting discount | 0 | (2,026) |
Gross PCI loans, net of discount | 17,260 | 28,882 | 36,548
Less: Allowance for PCI loan losses | (205) | (367) | $ (431)
Net loans | $ 17,055 | $ 28,515 |

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