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Consolidated Balance Sheets (Current Period Unaudited) (USD $) | Nov. 30, 2014 | Aug. 31, 2014
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CURRENT ASSETS: |  |
Cash and cash equivalents | $ 2,598,739 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 2,477,017 us-gaap_CashAndCashEquivalentsAtCarryingValue
Available for sale securities | 4,024,599 us-gaap_AvailableForSaleSecuritiesCurrent | 5,519,766 us-gaap_AvailableForSaleSecuritiesCurrent
Receivables: |  |
Trade excluding joint ventures, less allowance for doubtful accounts of $40,000 at November 30, 2014 and August 31, 2014, respectively | 3,350,630 ntic_TradeReceivablesExcludingJointVenturesNetCurrent | 3,596,247 ntic_TradeReceivablesExcludingJointVenturesNetCurrent
Trade joint ventures | 552,714 ntic_TradeReceivablesJointVenturesCurrent | 951,286 ntic_TradeReceivablesJointVenturesCurrent
Fees for services provided to joint ventures | 2,769,231 ntic_FeesReceivableForServicesProvidedToJointVenturesCurrent | 2,612,899 ntic_FeesReceivableForServicesProvidedToJointVenturesCurrent
Income taxes | 139,606 us-gaap_IncomeTaxesReceivable | 762 us-gaap_IncomeTaxesReceivable
Inventories | 5,640,028 us-gaap_InventoryGross | 5,961,399 us-gaap_InventoryGross
Prepaid expenses | 755,454 us-gaap_PrepaidExpenseCurrent | 411,226 us-gaap_PrepaidExpenseCurrent
Deferred income taxes | 789,364 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent | 789,364 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Total current assets | 20,620,365 us-gaap_AssetsCurrent | 22,319,966 us-gaap_AssetsCurrent
PROPERTY AND EQUIPMENT, NET | 6,803,143 us-gaap_PropertyPlantAndEquipmentNet | 6,477,987 us-gaap_PropertyPlantAndEquipmentNet
OTHER ASSETS: |  |
Investments in joint ventures | 23,302,301 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | 22,961,989 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Deferred income taxes | 943,279 us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent | 943,279 us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
Patents and trademarks, net | 1,228,181 us-gaap_FiniteLivedIntangibleAssetsNet | 1,197,700 us-gaap_FiniteLivedIntangibleAssetsNet
Other | 150,733 us-gaap_OtherAssetsNoncurrent | 156,854 us-gaap_OtherAssetsNoncurrent
Total other assets | 25,624,494 us-gaap_AssetsNoncurrent | 25,259,822 us-gaap_AssetsNoncurrent
Total assets | 53,048,002 us-gaap_Assets | 54,057,775 us-gaap_Assets
CURRENT LIABILITIES: |  |
Accounts payable | 2,139,655 us-gaap_AccountsPayableCurrent | 2,225,029 us-gaap_AccountsPayableCurrent
Accrued liabilities: |  |
Payroll and related benefits | 1,032,766 us-gaap_EmployeeRelatedLiabilitiesCurrent | 1,847,246 us-gaap_EmployeeRelatedLiabilitiesCurrent
Deferred joint venture royalties | 288,000 us-gaap_DeferredRevenueCurrent | 288,000 us-gaap_DeferredRevenueCurrent
Other | 102,614 us-gaap_OtherAccruedLiabilitiesCurrent | 106,380 us-gaap_OtherAccruedLiabilitiesCurrent
Total current liabilities | 3,563,035 us-gaap_LiabilitiesCurrent | 4,466,655 us-gaap_LiabilitiesCurrent
COMMITMENTS AND CONTINGENCIES (Note 13) |  |
EQUITY: |  |
Preferred stock, no par value; authorized 10,000 shares; none issued and outstanding | 0 us-gaap_PreferredStockValue | 0 us-gaap_PreferredStockValue
Common stock, $0.02 par value per share; authorized 10,000,000 shares; issued and outstanding 4,521,883 and 4,504,552, respectively | 90,438 us-gaap_CommonStockValue | 90,092 us-gaap_CommonStockValue
Additional paid-in capital | 12,942,167 us-gaap_AdditionalPaidInCapitalCommonStock | 12,676,546 us-gaap_AdditionalPaidInCapitalCommonStock
Retained earnings | 33,741,565 us-gaap_RetainedEarningsAccumulatedDeficit | 32,733,300 us-gaap_RetainedEarningsAccumulatedDeficit
Accumulated other comprehensive (loss) income | (951,151)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | 253,925 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Stockholders’ equity | 45,823,019 us-gaap_StockholdersEquity | 45,753,863 us-gaap_StockholdersEquity
Non-controlling interest | 3,661,948 us-gaap_MinorityInterest | 3,837,257 us-gaap_MinorityInterest
Total equity | 49,484,967 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 49,591,120 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total liabilities and equity | $ 53,048,002 us-gaap_LiabilitiesAndStockholdersEquity | $ 54,057,775 us-gaap_LiabilitiesAndStockholdersEquity

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