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INCOME TAXES - Narrative (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Disclosure [Abstract] |  |  |  |
Income tax expense related to net security gains | $ 211,000 | $ 405,000 | $ 483,000 |
Statutory federal tax rate | 21.00% | 34.00% | 34.00% | 35.00%
Increase in income tax expense due to application of new rate |  |  | $ 185,000 |
Tax Cuts And Jobs Act Of 2017,change in tax rate, deferred tax asset, provisional deferred income tax expense |  | $ 2,635,000 |  |
Reclass to other assets from deferred tax assets |  | 5,343,000 |  |
Income tax penalties or interest | $ 0 | 0 | $ 0 |
Accrued penalties | $ 0 | $ 0 |  |

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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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