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Loans and Loans Held for Sale - Restructured Loans for Periods Stated (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) loan | Dec. 31, 2014 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 60 | 44
Pre-Modification Outstanding Recorded Investment | $ 8,290 | $ 4,949
Post-Modification Outstanding Recorded Investment | 6,338 | 4,777
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (1,952) | $ (172)
Principal Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 8 | 6
Pre-Modification Outstanding Recorded Investment | $ 3,512 | $ 2,372
Post-Modification Outstanding Recorded Investment | 2,204 | 2,321
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (1,308) | $ (51)
Interest Rate Reduction and Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 4 | 2
Pre-Modification Outstanding Recorded Investment | $ 410 | $ 96
Post-Modification Outstanding Recorded Investment | 406 | 95
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (4) | $ (1)
Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 17 | 7
Pre-Modification Outstanding Recorded Investment | $ 3,312 | $ 1,368
Post-Modification Outstanding Recorded Investment | 2,922 | 1,322
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (390) | $ (46)
Chapter 7 Bankruptcy |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 31 | 29
Pre-Modification Outstanding Recorded Investment | $ 1,056 | $ 1,113
Post-Modification Outstanding Recorded Investment | 806 | 1,039
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (250) | $ (74)
Commercial Real Estate | Principal Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 2 | 4
Pre-Modification Outstanding Recorded Investment | $ 2,851 | $ 1,991
Post-Modification Outstanding Recorded Investment | 1,841 | 1,965
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (1,010) | $ (26)
Commercial Real Estate | Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 |
Pre-Modification Outstanding Recorded Investment | $ 438 |
Post-Modification Outstanding Recorded Investment | 427 |
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (11) |
Commercial and Industrial | Principal Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 6 | 2
Pre-Modification Outstanding Recorded Investment | $ 661 | $ 381
Post-Modification Outstanding Recorded Investment | 363 | 356
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (298) | $ (25)
Commercial and Industrial | Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 2 |
Pre-Modification Outstanding Recorded Investment | $ 824 |
Post-Modification Outstanding Recorded Investment | 728 |
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (96) |
Commercial Construction | Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 | 1
Pre-Modification Outstanding Recorded Investment | $ 1,434 | $ 1,019
Post-Modification Outstanding Recorded Investment | 1,432 | 974
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (2) | $ (45)
Residential Mortgage | Interest Rate Reduction and Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 |
Pre-Modification Outstanding Recorded Investment | $ 207 |
Post-Modification Outstanding Recorded Investment | 205 |
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (2) |
Residential Mortgage | Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 8 |
Pre-Modification Outstanding Recorded Investment | $ 545 |
Post-Modification Outstanding Recorded Investment | 265 |
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (280) |
Residential Mortgage | Chapter 7 Bankruptcy |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 7 | 9
Pre-Modification Outstanding Recorded Investment | $ 428 | $ 651
Post-Modification Outstanding Recorded Investment | 226 | 634
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (202) | $ (17)
Home Equity | Interest Rate Reduction and Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 | 2
Pre-Modification Outstanding Recorded Investment | $ 203 | $ 96
Post-Modification Outstanding Recorded Investment | 201 | 95
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (2) | $ (1)
Home Equity | Maturity Date Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 6
Pre-Modification Outstanding Recorded Investment | $ 71 | $ 349
Post-Modification Outstanding Recorded Investment | 70 | 348
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (1) | $ (1)
Home Equity | Chapter 7 Bankruptcy |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 23 | 15
Pre-Modification Outstanding Recorded Investment | $ 619 | $ 432
Post-Modification Outstanding Recorded Investment | 576 | 382
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (43) | $ (50)
Installment and Other Consumer | Chapter 7 Bankruptcy |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 5
Pre-Modification Outstanding Recorded Investment | $ 9 | $ 30
Post-Modification Outstanding Recorded Investment | 4 | 23
Increase (Decrease) Financing Receivable Modifications Difference In Recorded Investments | $ (5) | $ (7)

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