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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2015 USD ($) segment component office | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Accounting Policies [Line Items] |  |  |
Number of offices in which the company operates throughout the country | office | 21 |  |
Cash and cash equivalents, original maturities (or less) | 90 days |  |
Impairment charge related to investment | $ 0 |  |
Held to maturity or trading securities | $ 0 | $ 0 |
Number of impairment components | component | 2 |  |
Debt securities other than temporarily impaired | $ 0 | 0 | $ 0
Maturity of interest bearing deposits | 90 days |  |
Evaluation period to return past due loans to accrual status | 6 months |  |
Balance of loans serviced for others | $ 317,793,000 | 315,239,000 |
Foreclosed real estate totaled | $ 710,000 | 932,000 |
Percentage of limited partner interest | 99.00% |  |
Investment in real estate partnership | $ 5,450,000 | 3,629,000 |
Investment in real estate partnerships, proportional amortization method | 2,205,000 |  |
Loss investment in real estate partnership | 384,000 | 150,000 | 361,000
Recognition of federal tax credits | 475,000 | 475,000 | 475,000
Advertising expense | $ 723,000 | 540,000 | $ 489,000
Percentage of deferred tax assets (more than) | 50.00% |  |
Accumulated other comprehensive income (loss), net of taxes | $ 1,199,000 | $ 1,576,000 |
Number of operating significant segment | segment | 1 |  |
Customer list |  |  |
Accounting Policies [Line Items] |  |  |
Finite lives of intangible assets | 15 years |  |
Deposit premiums |  |  |
Accounting Policies [Line Items] |  |  |
Finite lives of intangible assets | 10 years |  |
Minimum | Buildings and improvements |  |  |
Accounting Policies [Line Items] |  |  |
Plant and equipment, useful life | 10 years |  |
Minimum | Furniture and Equipment |  |  |
Accounting Policies [Line Items] |  |  |
Plant and equipment, useful life | 3 years |  |
Maximum | Buildings and improvements |  |  |
Accounting Policies [Line Items] |  |  |
Plant and equipment, useful life | 40 years |  |
Maximum | Furniture and Equipment |  |  |
Accounting Policies [Line Items] |  |  |
Plant and equipment, useful life | 15 years |  |

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