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Intangible Assets, Net (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2010
Intangible assets, Net (Textual) [Abstract]
Indefinite lived intangible asset not subject to amortization	$ 900
Finite lived intangible assets remaining	0
Intangible asset amortization period	5 years
Amortization expense per year	550
Amortization expense		$ 562

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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