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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018 USD ($)
Disclosure Basisof Presentationand Significant Accounting Policies Additional Information [Abstract]
Callable Debt Securities Held At Premium	$ 4,100,000
Callable Debt Securities Unamortized Premium	13,000
ASU 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 100,000,000
ASU 2016-02 [Member] | Total Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Percentage	1.00%

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- Definition

Amount of callable debt securities held at a premium.

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Amount, after accumulated amortization, of debt premium on callable securities.

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Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information [Abstract]

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- Definition

Represents the percentage of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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No definition available.

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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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