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v3.6.0.2

Allowance for Loan Losses - Changes in the Allowance for Loan Losses and Loan Balances Outstanding (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | $ 14,361 | $ 14,268 | $ 16,528
Charge-offs | (1,826) | (2,049) | (4,781)
Recoveries | 2,070 | 942 | 1,021
Provision (Credit) | (1,300) | 1,200 | 1,500
Ending Balance | 13,305 | 14,361 | 14,268
Commercial and Agriculture [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 1,478 | 1,819 | 2,838
Charge-offs | (880) | (190) | (338)
Recoveries | 105 | 182 | 251
Provision (Credit) | 1,315 | (333) | (932)
Ending Balance | 2,018 | 1,478 | 1,819
Commercial Real Estate Non Owner Occupied [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 4,657 | 4,334 | 3,888
Charge-offs | (23) | (81) | (198)
Recoveries | 1,372 | 115 | 50
Provision (Credit) | (1,400) | 289 | 594
Ending Balance | 4,606 | 4,657 | 4,334
Residential Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 4,086 | 3,747 | 5,224
Charge-offs | (455) | (1,135) | (2,449)
Recoveries | 479 | 331 | 293
Provision (Credit) | (1,021) | 1,143 | 679
Ending Balance | 3,089 | 4,086 | 3,747
Real Estate Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 371 | 428 | 184
Charge-offs | (115) |  |
Recoveries | 12 | 5 | 6
Provision (Credit) | 152 | (62) | 238
Ending Balance | 420 | 371 | 428
Farm Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 538 | 822 | 740
Recoveries |  | 76 |
Provision (Credit) | (96) | (360) | 82
Ending Balance | 442 | 538 | 822
Consumer and Other [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 382 | 200 | 217
Charge-offs | (125) | (120) | (135)
Recoveries | 46 | 46 | 61
Provision (Credit) | 11 | 256 | 57
Ending Balance | 314 | 382 | 200
Commercial Real Estate Owner Occupied [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 2,467 | 2,221 | 2,931
Charge-offs | (228) | (523) | (1,661)
Recoveries | 56 | 187 | 360
Provision (Credit) | (124) | 582 | 591
Ending Balance | 2,171 | 2,467 | 2,221
Unallocated [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Beginning balance | 382 | 697 | 506
Provision (Credit) | (137) | (315) | 191
Ending Balance | $ 245 | $ 382 | $ 697

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