NONCONTROLLING INTERESTS (Narrative) (Details)	Dec. 31, 2016
Sandpiper Project [Member]
Ownership interest by noncontrolling (in percentage)	37.50%

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant