SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SALE OF PRODUCT LINE (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
Oct. 11, 2013	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Proceeds from sale of product line	$ 11,800		$ 0	$ 0	$ 11,832
Carrying value of assets sold	$ 2,500
Gain on sale of product line		$ 9,300	$ 0	$ 0	$ 9,295

Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6390208&loc=d3e400-110220

Name:	us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant