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Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Mar. 09, 2012 NeuroDyne Company [Member]
Schedule of Significant Accounting Policies [Line Items]
Acquisition of assets and assumed certain liabilities	$ 538		$ 538
Significant Accounting Policies (Textual) [Abstract]
Allowance for uncollectible accounts receivable	1,800	1,680
Inventory finished goods	6,081
Inventory parts	1,211
Inventory supplies	271
Reserve for obsolete and damaged inventory	832	686
Open purchase commitments	$ 3,611

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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Amount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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