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Note 7 - Financing Arrangements (Detail) (USD $) | 0 Months Ended |  |  |  | 0 Months Ended |
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Mar. 15, 2012 | Aug. 05, 2011 | Dec. 31, 2012 HSBC Bank [Member] | Aug. 05, 2011 HSBC Bank [Member] Revolving Credit Facility [Member] | Aug. 05, 2011 HSBC Bank [Member] Five-Year Term Loan [Member] | Mar. 15, 2012 HSBC Bank [Member] | Aug. 05, 2011 HSBC Bank [Member] | Aug. 01, 2011 Capital One Bank [Member] Term Loan [Member] | Aug. 01, 2011 Capital One Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 7,000,000 |  |  | $ 9,100,000 |  | $ 5,000,000
Debt Instrument, Face Amount |  |  |  |  | 2,100,000 | 6,000,000 |  | 2,100,000 |
Debt Instrument, Interest Rate Terms |  |  |  |  |  | Interest presently accrues on the Loan, at our option, at the variable rate of LIBOR plus 1.75% or HSBC's prime rate minus 0.50%. | Interest on the unpaid principal balance on this facility accrues at either (i) the LIBOR Rate plus 1.75% or (ii) the bank's prime rate minus 0.50%. |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.045% | 1.959% |  |  |  |  |  |
Purchase Price for Property Exclusive of Closing Costs | $ 7,200,000 |  |  |  |  |  |  |  |

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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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- Definition Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. + 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 Reference 3: 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. + Details
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