Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Goodwill and Intangible Assets [Line Items]
Cost	$ 3,469	$ 3,469
Accumulated Amortization	(2,522)	(2,149)
Net Book Value	947	1,320
Intangible assets not subject to amortization	40	40
Total intangible assets, net	987	1,360
Amortization of intangible assets	400	400	$ 400
Impairment of intangible assets	0	255	$ 0
Goodwill	$ 317	317
Existing technology
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	7 years
Cost	$ 1,910	1,910
Accumulated Amortization	(1,728)	(1,456)
Net Book Value	$ 182	454
Patent license
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	14 years
Cost	$ 1,388	1,388
Accumulated Amortization	(623)	(522)
Net Book Value	$ 765	866
Non-competition agreements and other
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	3 years
Cost	$ 171	171
Accumulated Amortization	(171)	(171)
Net Book Value	$ 0	$ 0