Margin Account Loan (Details) (USD $)	9 Months Ended
Sep. 30, 2012	Dec. 31, 2011
Margin Account Loan [Abstract]
Line of Credit Facility, Description	A "Margin Account" loan was established with Wells Fargo Advisors for which the proceeds of this flexible form of indebtedness effectively serves the Company as a line of credit to finance the capital improvement project underway at the New Brunswick, New Jersey Manufacturing facility.
Line of Credit Facility, Initiation Date	Jul. 26, 2011
Line of Credit Facility, Maximum Borrowing Capacity	$ 6,500,000
Line of Credit Facility, Asset Restrictions	the Company needs to pledge, restrict from sale and segregate to a dedicated Margin Account its marketable securities at an approximate ratio of two to one of security collateral to debt undertaken.
Line of Credit Facility, Interest Rate During Period	3.00%
Reduction in Wells Fargo Base Rate, Percentage	2.75%
Margin Account Loan Liability	5,761,000	1,695,000
Available-for-sale Securities, Restricted, Current	10,342,000	1,026,000
Available-for-sale Securities, Restricted, Noncurrent	0	2,075,000
Line of Credit Facility, Increase, Accrued Interest	$ 49,000

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A loan collateralized by marketable securities which requires the value of these securities remain above the outstanding loan balance. A drop in the value of these marketable securities below the outstanding loan balance would trigger a margin call. The margin call would require that the difference between the outstanding loan balance and the value of the securities be either paid down or the collateral increased, proportionally.

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Reduction in Wells Fargo Base Rate, Percentage

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Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities, which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

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Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities, which are intended be sold or mature greater than one year from the balance sheet date or the normal operating cycle, whichever is longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

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Description of restrictions on the entity's other assets as required by the terms of the credit facility.

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Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

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Increase for accrued, but unpaid interest on the credit facility for the period.

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Date the credit facility first became available, in CCYY-MM-DD format.

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The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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