ACQUISITIONS (Purchase Price) (Details) - Torrance Refinery [Member] $ in Thousands	Jul. 01, 2016 USD ($)
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	$ 404,542
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	982
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	704,633
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	68,053
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	2,688
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Expenses	64,137
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	139,453
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	971,932
Gross purchase price	537,500
Working capital	450,582
Post close purchase price adjustments	16,150
Total consideration	$ 971,932