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Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended		6 Months Ended
Commitments and Contingencies (Details Textual) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Commitments and Contingencies (Textual) [Abstract]
Allowance for sales returns	$ 100,000		$ 100,000		$ 200,000
Warranty reserve	300,000		300,000		200,000
Cash payments				300,000
Restructuring expense	$ 0	$ 0	$ 0	$ 0

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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