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, 2019  | 
Dec. 31, 2018  | 
Dec. 31, 2017  | 
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| Employee Benefits and Share-based Compensation, Noncash [Abstract] | |||
| Stock-based compensation expense | $ 8,332 | $ 6,132 | $ 4,648 | 
| Reduction of income tax expense | $ 1,750 | $ 1,287 | $ 1,467 | 
| Per share compensation cost | $ 0.08 | $ 0.07 | $ 0.06 | 
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- Definition Share based Compensation Allocated Expense On Earnings Per Share No definition available. 
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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