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Represent the aggregate notional amount specified by the derivative(s) at maturity, expressed as an absolute value.

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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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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The number of derivative instruments of a particular group held by the entity.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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The gain recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) $ in Thousands	12 Months Ended
DERIVATIVE FINANCIAL INSTRUMENTS (Details) $ in Thousands	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Feb. 28, 2017 USD ($) instrument	Oct. 31, 2013 USD ($) instrument
Interest expense
Effect of derivative financial instruments on the condensed consolidated statement of income and comprehensive income
Amount of (gain) loss reclassified from accumulated OCI into income (effective portion)	$ (6)	$ 313	$ 108
Interest Rate Swaps
Derivative financial instruments
Number of derivative instruments \| instrument				3	2
Notional amount of interest rate swap derivatives				$ 40,000	$ 25,000
Hedge ineffectiveness recorded in earnings	0	0	0
Notional amount of interest rate swap derivatives at maturity					$ 6,673
Estimated amount to be reclassified as an decrease to interest expense	222
Interest rate products \| Derivatives in cash flow hedging relationships
Effect of derivative financial instruments on the condensed consolidated statement of income and comprehensive income
Amount of gain (loss) recognized in OCI on derivative	244	(87)
Interest rate products \| Other long-term assets \| Derivatives designated as hedging instruments
Derivative financial instruments
Fair value of derivative Asset	566	196
Effect of derivative financial instruments on the condensed consolidated statement of income and comprehensive income
Total amounts of income and expense line items presented that reflect the effects of cash flow hedges recorded	$ 2,701	$ 2,474	$ 6,449