Note 18 - Fair Value Measurements (Details) - Assets And Liabilities Measured at Fair Value Nonrecurring Basis (NTI ASEAN [Member], USD $)	Aug. 31, 2013
Note 18 - Fair Value Measurements (Details) - Assets And Liabilities Measured at Fair Value Nonrecurring Basis [Line Items]
Fair market value of NTI Asean	$ 7,922,000
Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Assets And Liabilities Measured at Fair Value Nonrecurring Basis [Line Items]
Fair market value of NTI Asean	$ 7,922,000

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

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+ Details