$NTIC
NORTHERN TECHNOLOGIES INTERNATIONAL CORP Stock $ntic

$ntic Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-K Financial Statement

#000117184321008091 Filed on November 19, 2021

Income Statement

Concept	2021 Q3	2021	2020 Q3
Revenue	$15.51M	$56.49M	$10.03M
YoY Change	54.67%	18.59%	-25.43%
Cost Of Revenue	$9.923M	$36.92M	$6.620M
YoY Change	49.9%	16.8%	-27.17%
Gross Profit	$5.590M	$19.57M	$3.410M
YoY Change	63.93%	22.11%	-21.79%
Gross Profit Margin	36.03%	34.65%	34.0%
Selling, General & Admin	$5.409M	$20.28M	$4.250M
YoY Change	27.26%	4.83%	-19.05%
% of Gross Profit	96.75%	103.61%	124.63%
Research & Development	$1.183M	$4.400M	$1.060M
YoY Change	11.61%	10.58%	3.92%
% of Gross Profit	21.16%	22.48%	31.09%
Depreciation & Amortization	$275.2K	$905.3K	$250.0K
YoY Change	10.08%	8.21%	-7.41%
% of Gross Profit	4.92%	4.63%	7.33%
Operating Expenses	$5.016M	$24.68M	$4.190M
YoY Change	19.72%	5.81%	-13.43%
Operating Profit	$573.8K	$8.323M	-$780.0K
YoY Change	-173.57%	424.05%	62.5%
Interest Expense	$1.686M	$16.09K	$800.0K
YoY Change	110.74%	0.32%	-51.52%
% of Operating Profit	293.81%	0.19%
Other Income/Expense, Net	$50.60K		$140.0K
YoY Change	-63.86%
Pretax Income	$2.310M	$8.459M	$160.0K
YoY Change	1343.99%	386.13%	-86.32%
Income Tax	$532.3K	$1.462M	$1.800M
% Of Pretax Income	23.04%	17.28%	1125.0%
Net Earnings	$1.652M	$6.281M	-$1.760M
YoY Change	-193.88%	-569.55%	-312.05%
Net Earnings / Revenue	10.65%	11.12%	-17.55%
Basic Earnings Per Share		$0.69
Diluted Earnings Per Share	$165.1K	$0.64	-$193.4K
COMMON SHARES
Basic Shares Outstanding	9.110M	9.116M	9.100M
Diluted Shares Outstanding		9.874M

Balance Sheet

Concept	2021 Q3	2021	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$7.685M	$7.685M	$11.95M
YoY Change	-35.68%	-35.69%	26.83%
Cash & Equivalents	$7.681M	$7.681M	$6.403M
Short-Term Investments	$4.634K	$4.630K	$5.545M
Other Short-Term Assets	$1.302M	$1.302M	$800.0K
YoY Change	62.79%	62.79%	-24.53%
Inventory	$11.11M	$11.11M	$10.96M
Prepaid Expenses	$1.302M		$797.5K
Receivables	$11.75M	$11.75M	$8.550M
Other Receivables	$1.892M	$1.892M	$950.0K
Total Short-Term Assets	$33.75M	$33.75M	$33.20M
YoY Change	1.64%	1.65%	-0.3%
LONG-TERM ASSETS
Property, Plant & Equipment	$11.82M	$11.82M	$7.111M
YoY Change	66.25%	66.27%	-3.36%
Goodwill	$0.00
YoY Change
Intangibles
YoY Change
Long-Term Investments	$27.62M	$27.62M	$24.09M
YoY Change	14.67%	14.67%	-0.48%
Other Assets	$469.0K	$469.0K	$658.8K
YoY Change	-28.81%	-46.09%
Total Long-Term Assets	$40.62M	$40.62M	$32.87M
YoY Change	23.58%	23.59%	-3.91%
TOTAL ASSETS
Total Short-Term Assets	$33.75M	$33.75M	$33.20M
Total Long-Term Assets	$40.62M	$40.62M	$32.87M
Total Assets	$74.37M	$74.37M	$66.07M
YoY Change	12.56%	12.56%	-2.13%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.291M	$4.291M	$3.205M
YoY Change	33.87%	33.68%	-28.86%
Accrued Expenses	$4.046M	$4.046M	$2.580M
YoY Change	56.83%	56.83%	-22.52%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$8.516M	$8.516M	$6.098M
YoY Change	39.66%	39.61%	-22.24%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$104.1K	$104.1K	$270.0K
YoY Change	-61.44%	-61.44%
Total Long-Term Liabilities	$104.1K	$104.1K	$272.4K
YoY Change	-61.79%	-61.44%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.516M	$8.516M	$6.098M
Total Long-Term Liabilities	$104.1K	$104.1K	$272.4K
Total Liabilities	$8.620M	$12.00M	$6.370M
YoY Change	35.33%	27.42%	-18.77%
SHAREHOLDERS EQUITY
Retained Earnings	$46.97M		$42.47M
YoY Change	10.6%		-5.6%
Common Stock	$18.92M		$17.60M
YoY Change	7.52%		8.66%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$62.37M	$62.37M	$56.66M
YoY Change
Total Liabilities & Shareholders Equity	$74.37M	$74.37M	$66.07M
YoY Change	12.56%	12.56%	-2.13%

Cashflow Statement

Concept	2021 Q3	2021	2020 Q3
OPERATING ACTIVITIES
Net Income	$1.652M	$6.281M	-$1.760M
YoY Change	-193.88%	-569.55%	-312.05%
Depreciation, Depletion And Amortization	$275.2K	$905.3K	$250.0K
YoY Change	10.08%	8.21%	-7.41%
Cash From Operating Activities	$1.839M	$2.893M	$1.900M
YoY Change	-3.2%	-41.11%	-31.16%
INVESTING ACTIVITIES
Capital Expenditures	-$4.824M	$5.533M	-$360.0K
YoY Change	1239.99%	677.71%	33.33%
Acquisitions		$0.00
YoY Change
Other Investing Activities	$5.120M	$5.540M	-$100.0K
YoY Change	-5220.42%	-379.8%	-90.29%
Cash From Investing Activities	$296.5K	-$103.3K	-$440.0K
YoY Change	-167.38%	-96.29%	-66.15%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-212.6K	-$1.522M	-200.0K
YoY Change	6.3%	0.28%	-72.97%
NET CHANGE
Cash From Operating Activities	1.839M	$2.893M	1.900M
Cash From Investing Activities	296.5K	-$103.3K	-440.0K
Cash From Financing Activities	-212.6K	-$1.522M	-200.0K
Net Change In Cash	1.923M	$1.278M	1.260M
YoY Change	52.63%	133.88%	75.0%
FREE CASH FLOW
Cash From Operating Activities	$1.839M	$2.893M	$1.900M
Capital Expenditures	-$4.824M	$5.533M	-$360.0K
Free Cash Flow	$6.663M	-$2.640M	$2.260M
YoY Change	194.83%	-162.84%	-25.41%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	90000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.02
CY2021Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2020Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2021Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000
CY2021Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2021Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.02
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	15000000
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	15000000
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9184811
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9184811
CY2020Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9099990
CY2020Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9099990
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	pure
	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2021	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2020Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2021	ntic	Lessee Operating Lease Option To Extend Term One LesseeOperatingLeaseOptionToExtendTermOne	P5Y
CY2021	ntic	Lessee Operating Lease Option To Extend Term Two LesseeOperatingLeaseOptionToExtendTermTwo	P10Y
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	7680641	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6403032	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	4634	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	5544722	USD
CY2021Q3	ntic	Trade Receivables Excluding Joint Ventures Net Current TradeReceivablesExcludingJointVenturesNetCurrent	11128805	USD
CY2020Q3	ntic	Trade Receivables Excluding Joint Ventures Net Current TradeReceivablesExcludingJointVenturesNetCurrent	8072212	USD
CY2021Q3	ntic	Trade Receivables Joint Ventures Current TradeReceivablesJointVenturesCurrent	624808	USD
CY2020Q3	ntic	Trade Receivables Joint Ventures Current TradeReceivablesJointVenturesCurrent	475900	USD
CY2021Q3	ntic	Fees Receivable For Services Provided To Joint Ventures Current FeesReceivableForServicesProvidedToJointVenturesCurrent	1505127	USD
CY2020Q3	ntic	Fees Receivable For Services Provided To Joint Ventures Current FeesReceivableForServicesProvidedToJointVenturesCurrent	927286	USD
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CY2020Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	19907	USD
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CY2020Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	272443	USD
CY2021Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2020	us-gaap	Dividends Dividends	1182200	USD
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CY2020	us-gaap	Profit Loss ProfitLoss	-934760	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1150138	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	59704441	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	584414	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	74333	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	664174	USD
CY2021	us-gaap	Dividends Dividends	1780956	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	400000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	6996737	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-92562	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	65750581	USD
CY2021	us-gaap	Profit Loss ProfitLoss	6996737	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-934760	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	664174	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1337774	USD
CY2021	us-gaap	Depreciation Depreciation	905299	USD
CY2020	us-gaap	Depreciation Depreciation	836601	USD
CY2021	us-gaap	Adjustment For Amortization AdjustmentForAmortization	203088	USD
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	231624	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	262000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	25000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7465214	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4270327	USD
CY2021	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	3665365	USD
CY2020	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	5672099	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-0	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-173810	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-114620	USD
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-1424529	USD
CY2021	ntic	Increase Decrease In Trade Receivables Excluding Joint Ventures IncreaseDecreaseInTradeReceivablesExcludingJointVentures	3030655	USD
CY2020	ntic	Increase Decrease In Trade Receivables Excluding Joint Ventures IncreaseDecreaseInTradeReceivablesExcludingJointVentures	-1680611	USD
CY2021	ntic	Increase Decrease In Trade Receivables Joint Ventures IncreaseDecreaseInTradeReceivablesJointVentures	148908	USD
CY2020	ntic	Increase Decrease In Trade Receivables Joint Ventures IncreaseDecreaseInTradeReceivablesJointVentures	-348573	USD
CY2021	ntic	Increase Decrease In Fees Receivable For Services Provided To Joint Ventures IncreaseDecreaseInFeesReceivableForServicesProvidedToJointVentures	577841	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	6340088	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2190	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	800000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4000000	USD
CY2020	ntic	Increase Decrease In Fees Receivable For Services Provided To Joint Ventures IncreaseDecreaseInFeesReceivableForServicesProvidedToJointVentures	-340714	USD
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	362438	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-424002	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-58314	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	435712	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	487771	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-279312	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	866597	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1229510	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-160231	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	302641	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	1389804	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1294911	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2892940	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4912070	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2020536	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5532750	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	711412	USD
CY2021	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	110654	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	95996	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-103316	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2784682	USD
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	400000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	400000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1780956	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1182200	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	74333	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	64195	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	584414	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1522209	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1518005	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	10194	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-63109	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1277609	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	546274	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	6403032	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	5856758	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	7680641	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	6403032	USD
CY2021Q3	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	65	pure
CY2021Q3	ntic	Number Of Joint Venture Arrangements NumberOfJointVentureArrangements	18	pure
CY2021	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>Net Sales </i>– The Company includes net sales to its joint ventures and net sales to unaffiliated customers as separate line items on its consolidated statements of operations. There are <em style="font: inherit;">no</em> sales originating from the Company’s joint ventures included in the amount, as the Company’s investments in its joint ventures are accounted for using the equity method.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">When determining recognition of revenue arrangements the Company performs the following <em style="font: inherit;">five</em> steps: (<em style="font: inherit;">1</em>) identify the contracts with a customer; (<em style="font: inherit;">2</em>) identify the performance obligations in the contract; (<em style="font: inherit;">3</em>) determine the transaction price; (<em style="font: inherit;">4</em>) allocate the transaction price to the performance obligations in the contract; and (<em style="font: inherit;">5</em>) recognize revenue when or as the entity satisfies a performance obligation. The Company only applies the <em style="font: inherit;">five</em>-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods it transfers to, or services it performs for, the customer.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">Generally, the Company’s performance obligations are satisfied when the customers take possession of the products, which normally occurs at the shipping point or destination depending on the terms of the contracts. The Company’s services are generally sold based upon quotes or contracts with customers that include a fixed or determinable price, and sales arrangements do <em style="font: inherit;">not</em> contain any significant financing component for its customers. The Company does <em style="font: inherit;">not</em> recognize revenue related to product warranties, nor does the Company incur significant contract costs. Customer arrangements do <em style="font: inherit;">not</em> generate contract assets or liabilities.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>Revenue Recognition</i> – Revenue is measured based on consideration specified in the contract with a customer, adjusted for any applicable estimates of variable consideration and other factors affecting the transaction price, including noncash consideration, consideration paid or payable to customers, and significant financing components. Revenue from all customers is recognized when a performance obligation is satisfied by transferring control of a distinct good or service to a customer.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">Individually promised goods and services in a contract are considered a distinct performance obligation and accounted for separately if the customer can benefit from the individual good or service on its own or with other resources that are readily available to the customer and the good or service is separately identifiable from other promises in the arrangement. When an arrangement includes multiple performance obligations, the consideration is allocated between the performance obligations in proportion to their estimated standalone selling price. Costs related to products delivered are recognized in the period incurred, unless criteria for capitalization of costs are met. Costs of revenues consist primarily of direct labor, manufacturing overhead, materials, and components. The Company does <em style="font: inherit;">not</em> incur significant upfront costs to obtain a contract. If costs to obtain a contract were to become material, the costs would be recorded as an asset and amortized to expense in a manner consistent with the related recognition of revenue.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">The Company excludes government assessed and imposed taxes on revenue generating transactions that are invoiced to customers from revenue. The Company includes freight billed to customers in revenue. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of goods sold.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">The timing of revenue recognition, billing, and cash collections results in accounts receivable on the consolidated balance sheet.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>Performance Obligations</i> - A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation in proportion to its standalone selling price and recognized as revenue when, or as, the performance obligation is satisfied. The Company’s various performance obligations and the timing or method of revenue recognition are discussed below. The Company’s technical service consultants work directly with the end users of NTIC’s ZERUST® rust and corrosion inhibiting products to analyze their specific needs and develop systems to meet their performance requirements.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">The Company sells its products to both distributors and end-users. Each unit of product delivered under a customer order represents a distinct and separate performance obligation, as the customer can benefit from each unit on its own or with other resources that are readily available to the customer, and each unit of product is separately identifiable from other products in the arrangement.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">The transaction price for the Company’s products is the invoiced amount. The Company does <em style="font: inherit;">not</em> have variable consideration in the form of refunds, credits, rebates, price concessions, pricing incentives, or other items impacting transaction price. The purchase order pricing in arrangements with customers is deemed to approximate standalone selling price; therefore, the Company does <em style="font: inherit;">not</em> need to allocate proceeds on a relative standalone selling price allocation between performance obligations. The Company applies the practical expedient in paragraph <em style="font: inherit;">606</em>-<em style="font: inherit;">10</em>-<em style="font: inherit;">50</em>-<em style="font: inherit;">14</em> and does <em style="font: inherit;">not</em> disclose information about remaining performance obligations that have original expected durations of <em style="font: inherit;">one</em> year or less. There are <em style="font: inherit;">no</em> material obligations that extend beyond <em style="font: inherit;">one</em> year.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">Revenue is recognized when transfer of control occurs, as defined by the terms in the customer agreement. The Company immediately recognizes incidental items that are immaterial in the context of the contract. The Company has applied the practical expedient in paragraph <em style="font: inherit;">606</em>-<em style="font: inherit;">10</em>-<em style="font: inherit;">25</em>-<em style="font: inherit;">16A</em> and does <em style="font: inherit;">not</em> assess if immaterial items are promised goods or services. The Company has also applied the practical expedient in paragraph <em style="font: inherit;">606</em>-<em style="font: inherit;">10</em>-<em style="font: inherit;">32</em>-<em style="font: inherit;">18</em> regarding the adjustment of the promised amount of consideration for the effects of a significant financing component when the customer pays for that good or service within <em style="font: inherit;">one</em> year or less, as the Company does <em style="font: inherit;">not</em> have any significant financing components in its customer arrangements since payment is received at or shortly after the point of sale, generally <em style="font: inherit;">thirty</em> to <em style="font: inherit;">ninety</em> days.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">The Company estimates returns based on an analysis of historical experience if the right to return products is granted to its customers. The Company does <em style="font: inherit;">not</em> record a return asset, as non-conforming products are generally <em style="font: inherit;">not</em> returned. The Company’s return policy does <em style="font: inherit;">not</em> vary by geography. The customer has <em style="font: inherit;">no</em> rotation or price protection rights, and the Company is <em style="font: inherit;">not</em> under a warranty obligation.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>Sales Commissions</i> – Sales commissions paid to sales representatives are eligible for capitalization, as they are incremental costs that would <em style="font: inherit;">not</em> have been incurred without entering into a specific sales arrangement and are recoverable through the expected margin on the transaction. The Company has elected to apply the practical expedient provided by ASC <em style="font: inherit;">340</em>-<em style="font: inherit;">40</em>-<em style="font: inherit;">25</em>-<em style="font: inherit;">4</em> and recognize the incremental costs of obtaining contracts as an expense when incurred, as the amortization period of the assets that would have otherwise been recognized is <em style="font: inherit;">one</em> year or less. The Company records these costs as a selling expense.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>Product Warranty</i> – The Company offers warranties on various products and services. These warranties are assurance type warranties that are <em style="font: inherit;">not</em> sold on a standalone basis; therefore, they are <em style="font: inherit;">not</em> considered distinct performance obligations. The Company estimates the costs that <em style="font: inherit;"> may </em>be incurred under its warranties and records a liability in the amount of such costs at the time the revenue is recognized for the product sale.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><i>International Revenue</i> – The Company markets its products to numerous countries in North America, Europe, Latin America, Asia, and other parts of the world. See Note <em style="font: inherit;">11,</em> Segment and Geographical Information, for information regarding revenue disaggregation by geography.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p>
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	382000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	90000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<i>Use of Estimates</i> – The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
CY2021Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	4453688	USD
CY2020Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	3866791	USD
CY2021Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	6660519	USD
CY2020Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	7095005	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	11114207	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	10961796	USD
CY2021Q3	us-gaap	Land Land	310365	USD
CY2020Q3	us-gaap	Land Land	310365	USD
CY2021Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	13149258	USD
CY2020Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	8167783	USD
CY2021Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	5453679	USD
CY2020Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	4940912	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	18913302	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13419060	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7091844	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6308271	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11821458	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7110789	USD
CY2020Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2020-02-19
CY2015Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000	USD
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	231624	USD
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.065
CY2021Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-02-03
CY2021Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-02-17
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.065
CY2021Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-05-05
CY2021Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-05-19
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.065
CY2021Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-08-04
CY2021Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-08-18
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.065
CY2019Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2019-11-06
CY2019Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2019-11-20
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.065
CY2020Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2020-02-05
CY2021Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	2640548	USD
CY2021	ntic	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Including Cashless Exercises ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodIncludingCashlessExercises	77645
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.18
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	74950
CY2020	ntic	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Including Cashless Exercises ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodIncludingCashlessExercises	11975
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	5.13
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	6823
CY2021	us-gaap	Net Income Loss NetIncomeLoss	6281238	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-1337709	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9116472
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9096981
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	757667
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9874139
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9096981
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.15
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.15
CY2021Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	5225
CY2020Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	2754
CY2020Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	4646
CY2019Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	3597
CY2021	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	664174	USD
CY2020	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	1337774	USD
CY2021	ntic	Allocated Share Based Compensation Expense Estimate Fiscal Year Two AllocatedShareBasedCompensationExpenseEstimateFiscalYearTwo	666667	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0165	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0241	pure
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.454	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.452	pure
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P10Y
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P10Y
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0077	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0140	pure
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1127968
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.63
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	419874
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	839173
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.13
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	300770
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	10.87
CY2020	ntic	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Including Cashless Exercises ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodIncludingCashlessExercises	11975
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	5.13
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	-0
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	8.24
CY2021	ntic	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Including Cashless Exercises ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodIncludingCashlessExercises	77645
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.18
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	43546
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	9.63
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1426651
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.30
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	10514418	USD
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1022802
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.72
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	7108474	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8.24
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	10.87
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y2M12D
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y1M2D
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	pure
CY2021	us-gaap	Revenues Revenues	56493819	USD
CY2020	us-gaap	Revenues Revenues	47638691	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	36920814	USD
CY2021Q3	us-gaap	Noncurrent Assets NoncurrentAssets	11821458	USD
CY2020Q3	us-gaap	Noncurrent Assets NoncurrentAssets	7110789	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	31609274	USD
CY2021	us-gaap	Revenues Revenues	56493819	USD
CY2020	us-gaap	Revenues Revenues	47638691	USD
CY2021	ntic	Total Fees For Services Provided To Joint Ventures Geographic Location TotalFeesForServicesProvidedToJointVenturesGeographicLocation	5964260	USD
CY2021	ntic	Entity Wide Fees For Services Provided To Joint Ventures Geographic Percentage EntityWideFeesForServicesProvidedToJointVenturesGeographicPercentage	1.000	pure
CY2020	ntic	Total Fees For Services Provided To Joint Ventures Geographic Location TotalFeesForServicesProvidedToJointVenturesGeographicLocation	4612885	USD
CY2020	ntic	Entity Wide Fees For Services Provided To Joint Ventures Geographic Percentage EntityWideFeesForServicesProvidedToJointVenturesGeographicPercentage	1.000	pure
CY2021	us-gaap	Revenues Revenues	56493819	USD
CY2020	us-gaap	Revenues Revenues	47638691	USD
CY2020	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.15	pure
CY2020	ntic	Defined Contribution Plan Maximum Amount Of Employees Contributions Percent DefinedContributionPlanMaximumAmountOfEmployeesContributionsPercent	0.50	pure
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.035	pure
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	237499	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	234534	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	39000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	23000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1307000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1226000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1346000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1249000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1501000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	101000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	115905	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-176365	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	115905	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1425635	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1461905	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2674635	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1794000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	365000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	37000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	23000	USD
CY2021	us-gaap	Income Tax Reconciliation Equity In Earnings Losses Of Unconsolidated Subsidiary IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary	1560000	USD
CY2020	us-gaap	Income Tax Reconciliation Equity In Earnings Losses Of Unconsolidated Subsidiary IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary	888000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	839000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	641000	USD
CY2021	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	0	USD
CY2020	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	108000	USD
CY2021	ntic	Effective Income Tax Rate Reconciliation Tax Credit Foreign Expirations Amount EffectiveIncomeTaxRateReconciliationTaxCreditForeignExpirationsAmount	897000	USD
CY2020	ntic	Effective Income Tax Rate Reconciliation Tax Credit Foreign Expirations Amount EffectiveIncomeTaxRateReconciliationTaxCreditForeignExpirationsAmount	0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	277000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	368000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-492000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2797000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	75000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	189000	USD
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	83000	USD
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	55000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	231905	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-137.365	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1461905	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2674635	USD
CY2021	ntic	Foreign Withholding Tax ForeignWithholdingTax	113000	USD
CY2020	ntic	Foreign Withholding Tax ForeignWithholdingTax	-76000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	539300	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	173500	USD
CY2021Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	55100	USD
CY2020Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	64000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	103100	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	74900	USD
CY2021Q3	ntic	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	84300	USD
CY2020Q3	ntic	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	147500	USD
CY2021Q3	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	453000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	581200	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	466300	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	397300	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	4893300	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5790500	USD
CY2021Q3	us-gaap	Deferred Tax Assets Other Tax Carryforwards DeferredTaxAssetsOtherTaxCarryforwards	5243100	USD
CY2020Q3	us-gaap	Deferred Tax Assets Other Tax Carryforwards DeferredTaxAssetsOtherTaxCarryforwards	4824200	USD
CY2021Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	11837500	USD
CY2020Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	12053100	USD
CY2021Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11447500	USD
CY2020Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11561700	USD
CY2021Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	390000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	491400	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7300	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	50700	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	84300	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	147500	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	154900	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	-0	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	50900	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	83400	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	297400	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	281600	USD
CY2021Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	92600	USD
CY2020Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	209800	USD
CY2021	ntic	Tax Credit Carryforward Foreign Expirations In Period TaxCreditCarryforwardForeignExpirationsInPeriod	897000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	248000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4400	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	297600	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	278200	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	15200	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	15000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	15000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1065500	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	377600	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	247500	USD
CY2021Q3	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	11447500	USD
CY2020Q3	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	11561700	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	114000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	2797000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	278200	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	376438	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	658788	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	272336	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	386345	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	104102	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	272443	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	376438	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	658788	USD
CY2021	ntic	Finance And Operating Lease Weighted Average Remaining Lease Term FinanceAndOperatingLeaseWeightedAverageRemainingLeaseTerm	P1Y6M
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0231	pure
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	272336	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	84353	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	26700	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	0	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	383389	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6951	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	376438	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	272336	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	104102	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	386345	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	131840	USD
CY2021Q3	us-gaap	Accrued Bonuses Current And Noncurrent AccruedBonusesCurrentAndNoncurrent	2366668	USD
CY2020Q3	us-gaap	Accrued Bonuses Current And Noncurrent AccruedBonusesCurrentAndNoncurrent	1300000	USD
CY2021Q3	ntic	Entity Wide Trade Joint Venture Receivables Three Joint Ventures Percentage EntityWideTradeJointVentureReceivablesThreeJointVenturesPercentage	0.374	pure
CY2020Q3	ntic	Entity Wide Trade Joint Venture Receivables Three Joint Ventures Percentage EntityWideTradeJointVentureReceivablesThreeJointVenturesPercentage	0.882	pure
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	895646	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1099635	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	16086	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	16034	USD

Files In Submission

Name	View Source	Status
0001171843-21-008091-index-headers.html	Edgar Link	pending
0001171843-21-008091-index.html	Edgar Link	pending
0001171843-21-008091.txt	Edgar Link	pending
0001171843-21-008091-xbrl.zip	Edgar Link	pending
ex_308068.htm	Edgar Link	pending
ex_308069.htm	Edgar Link	pending
ex_308070.htm	Edgar Link	pending
ex_308071.htm	Edgar Link	pending
ex_308072.htm	Edgar Link	pending
ex_308073.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
ntic-20210831.xsd	Edgar Link	pending
ntic-20210831_cal.xml	Edgar Link	unprocessable
ntic-20210831_def.xml	Edgar Link	unprocessable
ntic-20210831_lab.xml	Edgar Link	unprocessable
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$NTIC
NORTHERN TECHNOLOGIES INTERNATIONAL CORP Stock $ntic

2021 Q3 Form 10-K Financial Statement

#000117184321008091 Filed on November 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTIC NORTHERN TECHNOLOGIES INTERNATIONAL CORP Stock $ntic

2021 Q3 Form 10-K Financial Statement

#000117184321008091 Filed on November 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTIC
NORTHERN TECHNOLOGIES INTERNATIONAL CORP Stock $ntic