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Goodwill and Intangible Assets, Net (Details Textual) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Aug. 31, 2012 World Heart [Member]	Mar. 31, 2013 Maximum [Member] Patents [Member]	Mar. 31, 2013 Minimum [Member] Patents [Member]
Goodwill and Intangible Assets, Net (Textual) [Abstract]
Acquired goodwill			$ 1,200,000
Estimated useful life				16 years	8 years
Business combination indefinite lived intangible assets work in progress			2,500,000
Goodwill and Intangible Assets, Net (Additional Textual) [Abstract]
Amortization expense	$ 121,000	$ 38,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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