ACQUISITIONS Acquired assets and liabilities (Details) - Chalmette Refining L.L.C. [Member] $ in Thousands	Nov. 01, 2015 USD ($)
Business Acquisition [Line Items]
Accounts receivable	$ 1,126
Inventories	271,434
Prepaid expenses and other current assets	913
Property, plant and equipment	356,961
Deferred charges and other assets	8,312
Accounts payable	(4,870)
Accrued expenses	(28,371)
Deferred tax liability	(25,721)
Noncontrolling interest	(11,821)
Fair value of net assets acquired	567,963
Noncontrolling Interest [Member]
Business Acquisition [Line Items]
Deferred tax liability	$ (5,144)