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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative effect of classification change			$ (2,264)
Reclassification from net cash flows from operating activities	$ (209,658)	$ (180,247)
Reclassification to net cash flows from financing activities	$ 272,547	(43,457)
Additional Paid-In Capital
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative effect of classification change			(431)
Accumulated Deficit
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative effect of classification change			(1,833)
New Accounting Pronouncement, Early Adoption, Effect
New Accounting Pronouncement, Early Adoption [Line Items]
Reclassification from net cash flows from operating activities		2,200
Reclassification to net cash flows from financing activities		$ 2,200
New Accounting Pronouncement, Early Adoption, Effect \| Additional Paid-In Capital
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative effect of classification change			(400)
New Accounting Pronouncement, Early Adoption, Effect \| Accumulated Deficit
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative effect of classification change			$ 1,800