OTHER BORROWINGS - Information Regarding Other Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Securities sold under agreement to repurchase and Federal funds purchased
Securities under repurchase agreements	$ 43,062	$ 38,339
Short-term FHLB advances	130,000	138,000
Term debt	11,667	18,333
Federal funds purchased	923	15,000
Total other borrowings	$ 185,652	209,672
Federal Home Loan Bank, Advances, Interest Rate	1.67%
Maximum
Securities sold under agreement to repurchase and Federal funds purchased
Debt Instrument, Term	6 months
Securities sold under repurchase agreements
Securities sold under agreement to repurchase and Federal funds purchased
Pledged mortgage backed securities	$ 58,110
Securities sold under repurchase agreements \| Maximum
Securities sold under agreement to repurchase and Federal funds purchased
Maturity period	30 days
Term debt \| Cheviot Financial Corp.
Securities sold under agreement to repurchase and Federal funds purchased
Proceeds from Loans	$ 30,000
Repayments of Debt	$ 6,666	$ 11,667
Debt Instrument, Interest Rate, Stated Percentage	3.50%

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Represents the maturity period of short-term debt.

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Term debt obtained by the Company to fund an acquisition.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Interest rate of advances made and reported by Federal Home Loan Bank (FHLBank).

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The carrying amount as of the date of the latest financial statement presented of mortgage-related securities classified as available for sale or held for investment which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party.

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Cash received from principal payments made on loans related to operating activities.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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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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