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Commitments and Contingencies (Adverse Purchase Commitments Narrative) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Commitments And Contingencies Adverse Purchase Commitments Narrative Details
Accrued liability for loss on commitments to purchase materials to support production of PicoP based products	$ 522,000	$ 634,000

Aggregate carrying amount, as of the balance sheet date, of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed in the balance sheet. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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