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Goodwill and Intangible Assets (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Apr. 02, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Date of acquisition	Apr. 02, 2012
Goodwill			$ 6,100,000
Total intangible amortization expense	$ 314,000	$ 0

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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