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Note 6 - Product Warranty (Details) - Changes in Product Warranty Liability (USD $) | 3 Months Ended | 6 Months Ended
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May 31, 2014 | May 31, 2013 | May 31, 2014 | May 31, 2013
Changes in Product Warranty Liability [Abstract] |  |  |  |
Balance, beginning | $ 153,455 | $ 575,330 | $ 220,719 | $ 578,864
Balance, ending | 229,400 | 526,981 | 229,400 | 526,981
Settlements made in cash or in-kind | (43,493) | (212,374) | (195,070) | (381,063)
Warranties issued | $ 119,438 | $ 164,025 | $ 203,751 | $ 329,180

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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate decrease in the liability for payments made (in cash or in kind) to satisfy claims under the terms of the standard product warranty. Does not include any Increase or Decrease in the liability for payments related to extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate increase in the liability for accruals related to standard product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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