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STOCKHOLDERS' EQUITY (Treasury Stock) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 31, 2015
Treasury Stock
Aggregate cost of shares repurchased during the period	$ 6,019	$ 9,510	$ 12,765
Treasury stock (in shares)	2,851,578	2,565,399
Stock Repurchase Program
Treasury Stock
Amount of stock repurchases authorized				$ 50,000
Number of shares repurchased during the period	286,179
Aggregate cost of shares repurchased during the period	$ 6,000
Amount available for repurchase	$ 31,700

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The cash outflow to reacquire common stock during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
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Amount remaining of a stock repurchase plan authorized.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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Number of shares that have been repurchased during the period and are being held in treasury.

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