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STOCKHOLDERS' EQUITY (Reclass) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Unrecognized Net Periodic Benefit Costs |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | $ (7,242) | $ (9,110)
Tax benefit | 2,817 | 3,544
Total, net of tax | (4,425) | (5,566)
Amortization of net actuarial loss |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | (4,230) | (2,705)
Amortization of prior service credit |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | 190 | 190
Pension settlement expense |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | $ (3,202) | $ (6,595)

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