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Inventories (Details Textual) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Inventories (Textual) [Abstract]
Inventory held on consignment	$ 204		$ 368
Inventory write-off	$ 75	$ 451

- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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- Definition

Gross amount of inventory owned by the entity but in the hands of a customer, typically a reseller.

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