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Line of Credit	9 Months Ended
	Sep. 30, 2011
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Note 5. Line of Credit The Company amended its $9,000,000 line of credit with the Bank of America (the “Bank”) effective September 30, 2011, extending it through August 1, 2013.  The line of credit is drawn on from time to time as needed for equipment purchases and working capital.  Amounts drawn against the line of credit bear interest at the Bank’s Prime Rate minus 0.5 percentage point, or alternately the LIBOR rate plus 1.0 percentage point, and are secured by the Company’s cash invested with the Bank.  The Company is in compliance with all debt covenants.  The weighted average interest rate during the first nine months of 2011 was 1.88%.  At September 30, 2011 and December 31, 2010, $7,500,000 and $8,500,000, respectively, was borrowed under the line of credit.

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The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20,22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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