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ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Other Accounting Pronouncements) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 01, 2018 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Adopted Accounting Pronouncements |  |  |  |  |
Decrease in operating expenses |  | $ 790,194 | $ 694,601 | $ 1,477,470 | $ 1,355,589
Increase in other cost |  | 1,123 | 528 | 3,324 | 2,234
Net income |  | $ 1,233 | 15,777 | 11,187 | 8,370
ASC Topic 715, Compensation – Retirement Benefits | Adjustment |  |  |  |  |
Adopted Accounting Pronouncements |  |  |  |  |
Decrease in operating expenses |  |  | (1,000) |  | (3,400)
Increase in other cost |  |  | 1,000 |  | 3,400
Net income |  |  | $ 0 |  | $ 0
EPS (in dollars per share) |  |  | $ 0 |  | $ 0
Accumulated Other Comprehensive Loss | ASC Topic 220, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income |  |  |  |  |
Adopted Accounting Pronouncements |  |  |  |  |
Reclassification from AOCI to Retained earnings tax effect | $ (3,600) |  |  |  |
Retained Earnings |  |  |  |  |
Adopted Accounting Pronouncements |  |  |  |  |
Net income |  |  |  | $ 11,187 |
Retained Earnings | ASC Topic 220, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income |  |  |  |  |
Adopted Accounting Pronouncements |  |  |  |  |
Reclassification from AOCI to Retained earnings tax effect | $ 3,600 |  |  |  |

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