SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Reimbursable Third-Party Patent Costs, Third party Royalties and Royalty Buy-Down (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Mar. 31, 2012 USD ($) Payment	Sep. 30, 2017 USD ($) Payment	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Reimbursable Third-Party Patent Costs [Abstract]
Accrued patent costs	$ 0			$ 0		$ 25
Third-Party Royalties [Abstract]
Royalty expenses	400	$ 400		1,400	$ 1,200
Royalty Buy-Down [Abstract]
Initial payment for royalty buy down			$ 1,500	$ 600
Number of additional cash payments for royalty buy-down | Payment			5
Number of cash payments made for royalty obligation | Payment				4
Deferred costs, amortization period				5 years
Amount amortized related to agreement	400	$ 200		$ 1,100	$ 700
Deferred royalty buy-down - long term	$ 2,300			$ 2,300		$ 3,400