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STOCK COMPENSATION PLANS (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock compensation costs | $ 4,635 | $ 3,698 | $ 9,210 | $ 7,652
Net tax benefit recognized in equity for stock compensation plans |  |  | 1,005 | 3,196
Common Stock and Additional Paid-in Capital |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Net tax benefit recognized in equity for stock compensation plans | $ 19 | $ 51 | $ 1,005 | $ 3,196

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