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Note 13 - Equity Incentive Plan - Summary of the Status of the Company's Non-vested Shares (Details) | 12 Months Ended
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Nov. 30, 2016 $ / shares shares
Non-vested at Beginning of Period, Shares (in shares) | shares | 5,000
Non-vested at Beginning of Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |
Vested, Non-vested Shares (in shares) | shares | (5,000)
Vested, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares | $ 1.14
Forfeited, Non-vested Shares (in shares) | shares |
Forfeited, Non-vested Options, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |
Non-vested at End of Period, Shares (in shares) | shares |
Non-vested at End of Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |

X
- Definition Number of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of non-vested options forfeited. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
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Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options vested. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration