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Property, Plant and Equipment (Details Textual) (USD $)	12 Months Ended
Property, Plant and Equipment (Details Textual) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Property Plant and Equipment (Textual) [Abstract]
Depreciation expense	$ 919,000	$ 958,000

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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