INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amortization
Amortization expense	$ 18	$ 18	$ 18
Future amortization
Expected amortization expense in next year	18
Expected amortization expense in second year	18
Expected amortization expense in third year	18
Expected amortization expense in fourth year	18
Expected amortization expense in fifth year	18
Patent licensing fee
Intangible assets
Useful life	15 years
Intangible assets - gross	200	200
Accumulated amortization	(86)	(69)
Total	$ 114	$ 131