Goodwill and Intangible Assets, Net (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, net - beginning balance	$ 1,480	$ 1,973
Foreign currency translation	208	(62)
Impairment		(431)
Goodwill, net - ending balance	1,688	$ 1,480
Accumulated goodwill impairment	$ (800)