ACCOUNTING POLICIES (Details 4) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018		Dec. 31, 2017
Finite-Lived Intangible Assets
Intangible assets subject to amortization, gross	$ 28,004	[1]	$ 17,779
Less: accumulated amortization of intangible assets subject to amortization	(12,494)		(10,442)
Intangible assets subject to amortization, net	15,510		7,337
Intangible assets not subject to amortization	10,833		0
Intangible assets, net	$ 26,343		$ 7,337
Weighted average
Finite-Lived Intangible Assets
Useful life of intangible assets	5 years 8 months 11 days

[1] At June 30, 2018, the weighted average remaining useful life for intangible assets subject to amortization, excluding fully amortized intangible assets, was 5.70 years.