SALE OF ASSETS - Sale of XSense (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Apr. 16, 2015	Sep. 30, 2015	Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Royalty Revenue		$ 700	$ 1,200
Patents
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Finite-Lived Intangible Assets, Fair Value Assumption, Discount Rate	40.00%
XSense [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intellectual Property License, Term	5 years
Intellectual Property License, Option to Renew, Renewal Period	10 years
Royalty Agreement, Guaranteed Minimum Royalties	$ 16,300
Proceeds from Royalties Received	9,300
Total consideration	(16,700)
Selling and other costs	457
Gain on sale of assets	2,159
XSense [Member] | Discontinued Operations Disposed of by Means Other Than Sale, Exchange
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net assets transferred	961
XSense [Member] | Patents | Royalty Arrangement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of patent license agreement	$ 13,123