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NATURE OF OPERATIONS AND RECENT ACCOUNTING PRONOUNCEMENTS (Details)
6 Months Ended
Jun. 30, 2019
Lease, Practical Expedients, Package [true false] true
Lease, Practical Expedient, Use of Hindsight [true false] true
Lease Practical Expedient Land Easement true
MSC  
Ownership interest (as a percent) 49.00%