Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFITS AND STOCK BASED COMPENSATION (Schedule of Recognized Stock-Based Compensation Expense) (Details)

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EMPLOYEE BENEFITS AND STOCK BASED COMPENSATION (Schedule of Recognized Stock-Based Compensation Expense) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Employee Benefits and Share-based Compensation, Noncash [Abstract]      
Stock-based compensation expense $ 4,648 $ 3,270 $ 1,388
Reduction of income tax expense $ 1,467 $ 1,104 $ 405
Per share compensation cost $ 0.06 $ 0.05 $ 0.02