Goodwill and Intangible Assets, Net (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Schedule of Goodwill and Intangible Assets [Line Items]
Cost	$ 3,469,000		$ 3,469,000
Accumulated Amortization	(1,468,000)		(1,370,000)
Net Book Value	2,001,000		2,099,000
Intangible assets not subject to amortization	295,000		295,000
Total intangible assets, net	2,296,000		2,394,000
Amortization of intangible assets	100,000	100,000
Goodwill	317,000		317,000
Existing technology
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	7 years
Cost	1,910,000		1,910,000
Accumulated Amortization	(978,000)		(909,000)
Net Book Value	932,000		1,001,000
Patent license
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	14 years
Cost	1,388,000		1,388,000
Accumulated Amortization	(347,000)		(323,000)
Net Book Value	1,041,000		1,065,000
Non-competition agreements and other
Schedule of Goodwill and Intangible Assets [Line Items]
Estimated Lives	3 years
Cost	171,000		171,000
Accumulated Amortization	(143,000)		(138,000)
Net Book Value	$ 28,000		$ 33,000