COMMITMENTS AND CONTINGENCIES - (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2011 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($) Position
Long-term Purchase Commitment [Line Items]
Revenue from Grants			$ 790
Grant, Terms and Conditions, Required Increase in Workforce by Specified Date | Position			96
Licensed technology [Member] | Minimum [Member]
Long-term Purchase Commitment [Line Items]
Future maximum royalty payments		2.00%
Licensed technology [Member] | Maximum [Member]
Long-term Purchase Commitment [Line Items]
Future maximum royalty payments		10.00%
In-process research and development [Member]
Long-term Purchase Commitment [Line Items]
Future maximum royalty payments	7.00%
Milestone payment one	$ 500
Milestone payment two	2,000
Milestone payment three	4,000
Milestone for milestone payment one	10,000
Milestone for milestone payment two	25,000
Milestone for milestone payment three	50,000
Milestone for ending royalty payments, cumulative sales	$ 20,000
Payment upon regulatory approval [Member]
Long-term Purchase Commitment [Line Items]
Other commitment		$ 16,500
Payment upon subscriber levels as of July 2018, July 2019 and July 2020 [Member]
Long-term Purchase Commitment [Line Items]
Other commitment		1,500
Payment upon completion of software development
Long-term Purchase Commitment [Line Items]
Other commitment		$ 300