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Note 2 - Notes Payable And Long-Term Debt (Details) (USD $) |  |  |  | 0 Months Ended | 9 Months Ended | 0 Months Ended | 1 Months Ended |  |
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Sep. 30, 2013 | Dec. 31, 2012 | Jul. 31, 2007 Building [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member] sqft | Jul. 31, 2007 Land [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member] acre | Jul. 12, 2012 London Interbank Offered Rate (LIBOR) [Member] Line of Credit Note with JPMorgan Chase Bank, N.A.[Member] | Sep. 30, 2013 London Interbank Offered Rate (LIBOR) [Member] Line of Credit Note with JPMorgan Chase Bank, N.A.[Member] | Apr. 30, 2008 Term Note [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member] | Jul. 31, 2007 Credit Agreement with JPMorgan Chase Bank, N.A. [Member] | Sep. 30, 2013 Line of Credit Note with JPMorgan Chase Bank, N.A.[Member] | Jul. 12, 2012 Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]
Note 2 - Notes Payable And Long-Term Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | $ 5,500,000 |  | $ 4,000,000
Area of Real Estate Property (in Square Feet) |  |  | 191,000 | 30 |  |  |  |  |  |
Area of Real Estate Property (in Acres) |  |  | 191,000 | 30 |  |  |  |  |  |
Proceeds from Bank Debt |  |  |  |  |  |  |  | 4,050,000 |  |
Debt Instrument, Term |  |  |  |  |  |  | 10 years |  |  |
Debt Instrument Amortization Period |  |  |  |  |  |  | 20 years |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.10% | 7.10% |  |  |  |  | 7.10% |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 2.00% | 2.25% |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  | $ 4,000,000 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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. + 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(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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