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Note 6 - Notes Payable And Long-Term Debt (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 7 Months Ended | 25 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2008 | Jul. 31, 2007 | Jul. 31, 2007 | Jul. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Jul. 31, 2007 Building [Member] sqft | Jul. 31, 2007 Land [Member] acre | Dec. 31, 2012 JPMorgan Chase Bank [Member] | Jul. 12, 2012 JPMorgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) |  | $ 5,500,000 | $ 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 |  |
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases (in Dollars) |  | 5,500,000 | 5,500,000 |  |  |  |  |  |  |
Line Of Credit Facility Covenant Percentage |  |  | 90.00% |  |  |  |  |  |  |
Debt Instrument Maturity Period | 10 years |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.10% |  |  |  | 7.10% | 7.10% |  |  |  |
Proceeds from Bank Debt (in Dollars) |  | $ 4,050,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Covenant Terms |  |  |  | 1.2 to 1.0 |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  | 2.2087% | 2.00%

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- Definition Interest rate stated in the contractual 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 Description of the conditions for borrowing under the credit facility including the nature of any restrictions. + References Reference 1: 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FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: 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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