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Major Customers (Details Textual) (USD $) | Dec. 31, 2012 | Dec. 31, 2011
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Customer One [Member] |  |
Sales Revenue, Goods, Net, Percentage | 26.30% | 28.80%
Accounts Receivable, Gross | $ 2,021,000 | $ 2,390,000
Customer Two [Member] |  |
Sales Revenue, Goods, Net, Percentage | 8.90% | 12.20%
Accounts Receivable, Gross | 627,000 | 746,000
Customer Three [Member] |  |
Sales Revenue, Goods, Net, Percentage | 7.50% | 9.40%
Accounts Receivable, Gross | $ 0 | $ 0

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- Definition For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.9) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition The percentage of net product revenue to total net revenue from the sale of goods as of year end. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant