Northern Technologies International (NTIC) 10-Q 10 Jan 25 2025 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Nov. 30, 2024	Jan. 10, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 30, 2024
Document Transition Report	false
Entity File Number	001-11038
Entity Registrant Name	NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-0857886
Entity Address, Address Line One	4201 Woodland Road
Entity Address, City or Town	Circle Pines
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55014
City Area Code	763
Local Phone Number	225-6600
Title of 12(b) Security	Common stock, par value $0.02 per share
Trading Symbol	NTIC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		9,470,507
Entity Central Index Key	0000875582
Current Fiscal Year End Date	--08-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
CURRENT ASSETS:
Cash and cash equivalents	$ 5,569,834	$ 4,952,184
Receivables:
Trade, less allowance for credit losses of $310,000 as of November 30, 2024 and August 31, 2024	16,081,710	19,187,079
Fees for services provided to joint ventures	1,170,328	1,235,016
Income taxes	688,806	392,293
Inventories, net	14,337,384	14,390,844
Prepaid expenses	2,454,288	1,421,803
Total current assets	40,302,350	41,579,219
PROPERTY AND EQUIPMENT, NET	17,053,239	16,265,653
OTHER ASSETS:
Investments in joint ventures	25,492,921	25,397,287
Deferred income tax, net	508,495	544,464
Intangible assets, net	5,573,945	5,682,945
Goodwill	4,782,376	4,782,376
Operating lease right of use assets	324,329	424,558
Total other assets	36,682,066	36,831,630
Total assets	94,037,655	94,676,502
CURRENT LIABILITIES:
Line of credit	4,518,734	4,291,608
Term loan	2,761,592	2,820,835
Accounts payable	6,559,744	6,393,355
Income taxes payable	256,849	327,781
Accrued liabilities:
Payroll and related benefits	2,710,181	3,163,372
Other	1,094,381	574,876
Current portion of operating leases	217,441	325,116
Total current liabilities	18,118,922	17,896,943
LONG-TERM LIABILITIES:
Deferred income tax, net	1,504,796	1,504,796
Operating leases, less current portion	106,888	99,442
Total long-term liabilities	1,611,684	1,604,238
Commitments and Contingencies
EQUITY:
Preferred stock, no par value; authorized 10,000 shares; none issued and outstanding	0	0
Common stock, $0.02 par value per share; authorized 15,000,000 shares as of November 30, 2024 and August 31, 2024; issued and outstanding 9,470,507 and 9,466,976, respectively	189,410	189,340
Additional paid-in capital	23,999,854	23,615,564
Retained earnings	53,669,366	53,771,211
Accumulated other comprehensive loss	(7,645,298)	(6,382,124)
Stockholders’ equity	70,213,332	71,193,991
Non-controlling interests	4,093,717	3,981,330
Total equity	74,307,049	75,175,321
Total liabilities and equity	94,037,655	94,676,502
Intangible Assets Excluding Patents and Trademarks [Member]
OTHER ASSETS:
Intangible assets, net	$ 5,573,945	$ 5,682,945

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Accounts Receivable, Allowance for Credit Loss, Current	$ 310,000	$ 310,000
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	10,000	10,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.02	$ 0.02
Common Stock, Shares Authorized (in shares)	15,000,000	15,000,000
Common Stock, Shares, Outstanding (in shares)	9,470,507	9,466,980
Common Stock, Shares, Issued (in shares)	9,470,507	9,466,980

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
NET SALES:
Net sales	$ 21,338,393	$ 20,181,675
Cost of goods sold	13,175,440	12,847,401
Gross profit	8,162,953	7,334,274
JOINT VENTURE OPERATIONS:
Equity in income from joint ventures	1,129,593	1,102,241
Fees for services provided to joint ventures	1,284,119	1,248,958
Total joint venture operations	2,413,712	2,351,199
OPERATING EXPENSES:
Selling expenses	4,267,654	3,686,058
General and administrative expenses	3,858,943	3,517,061
Research and development expenses	1,343,397	1,105,921
Total operating expenses	9,469,994	8,309,040
OPERATING INCOME	1,106,671	1,376,433
INTEREST INCOME	25,567	46,442
INTEREST EXPENSE	(120,220)	(111,138)
INCOME BEFORE INCOME TAX EXPENSE	1,012,018	1,311,737
INCOME TAX EXPENSE	217,871	226,796
NET INCOME	794,147	1,084,941
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	233,056	189,420
NET INCOME ATTRIBUTABLE TO NTIC	$ 561,091	$ 895,521
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.06	$ 0.09
Diluted (in dollars per share)	$ 0.06	$ 0.09
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic (in shares)	9,470,507	9,427,588
Diluted (in shares)	9,754,209	9,706,581
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.07	$ 0.07

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
NET INCOME	$ 794,147	$ 1,084,941
OTHER COMPREHENSIVE (LOSS) INCOME – FOREIGN CURRENCY TRANSLATION ADJUSTMENT	(1,383,843)	301,319
COMPREHENSIVE (LOSS) INCOME	(589,696)	1,386,260
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	(112,387)	(183,797)
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO NTIC	$ (702,083)	$ 1,202,463

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
BALANCE (in shares) at Aug. 31, 2023	9,424,101
BALANCE at Aug. 31, 2023	$ 188,482	$ 21,986,767	$ 51,004,427	$ (6,823,403)	$ 4,342,524	$ 70,698,797
Stock issued for employee stock purchase plan (in shares)	3,496
Stock issued for employee stock purchase plan	$ 70	40,026	0	0	0	40,096
Stock-based compensation expense	0	350,933	0	0	0	350,933
Dividend received by non-controlling interest	0	0	0	0	(800,000)	(800,000)
Dividends paid to shareholders	0	0	(659,932)	0	0	(659,932)
Net income	0	0	895,521	0	189,420	1,084,941
Comprehensive income	$ 0	0	0	306,942	(5,623)	301,319
BALANCE (in shares) at Nov. 30, 2023	9,427,597
BALANCE at Nov. 30, 2023	$ 188,552	22,377,726	51,240,016	(6,516,461)	3,726,321	71,016,154
BALANCE (in shares) at Aug. 31, 2024	9,466,980
BALANCE at Aug. 31, 2024	$ 189,340	23,615,564	53,771,211	(6,382,124)	3,981,330	75,175,321
Stock issued for employee stock purchase plan (in shares)	3,527
Stock issued for employee stock purchase plan	$ 71	42,400	0	0	0	42,471
Stock-based compensation expense	0	341,890	0	0	0	341,890
Dividends paid to shareholders	0	0	(662,936)	0	0	(662,936)
Net income	0	0	561,091	0	233,056	794,147
Comprehensive income	$ 0	0	0	(1,263,174)	(120,669)	(1,383,843)
BALANCE (in shares) at Nov. 30, 2024	9,470,507
BALANCE at Nov. 30, 2024	$ 189,410	$ 23,999,854	$ 53,669,366	$ (7,645,298)	$ 4,093,717	$ 74,307,049

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 794,147	$ 1,084,941
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	341,890	350,933
Depreciation expense	267,155	307,010
Amortization expense	147,720	147,655
Equity in income from joint ventures	(1,129,593)	(1,102,241)
Dividends received from joint ventures	0	371,103
Deferred income taxes	22,755	15,335
Changes in current assets and liabilities:
Trade	2,874,595	794,395
Fees for services provided to joint ventures	64,687	75,914
Dividends receivable from joint venture	0	1,986,027
Income taxes	(344,621)	(285,866)
Inventories	(73,223)	525,559
Prepaid expenses and other	(1,046,973)	(929,250)
Accounts payable	195,752	270,194
Income tax payable	(19,024)	9,594
Accrued liabilities	299,800	(544,411)
Net cash provided by operating activities	2,395,066	3,076,892
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(1,219,616)	(390,729)
Investments in patents	(38,720)	(33,142)
Net cash used in investing activities	(1,258,336)	(423,871)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net payments on line of credit	227,124	(600,000)
Dividends paid on NTIC common stock	(662,936)	(659,932)
Dividends received by non-controlling interest	0
Proceeds from employee stock purchase plan	42,471	40,096
Net cash used in financing activities	(393,341)	(2,019,836)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS:	(125,739)	54,673
NET INCREASE IN CASH AND CASH EQUIVALENTS	617,650	687,858
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	4,952,184	5,406,174
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 5,569,834	$ 6,094,032

Note 1 - Interim Financial Info

Note 1 - Interim Financial Information	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. INTERIM FINANCIAL INFORMATION In the opinion of management, the accompanying unaudited consolidated financial statements contain all necessary adjustments, which are of a normal recurring nature, and present fairly the consolidated financial position of Northern Technologies International Corporation and its subsidiaries (the Company) as of November 30, 2024 and August 31, 2024, the results of the Company’s operations for the three months ended November 30, 2024 and 2023, the changes in stockholders’ equity for the three months ended November 30, 2024 and 2023 and the Company’s cash flows for the three months ended November 30, 2024 and 2023, in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Company’s annual report on Form 10-K for the fiscal year ended August 31, 2024. These consolidated financial statements also should be read in conjunction with the “ Management s Discussion and Analysis of Financial Condition and Results of Operations Operating results for the three months ended November 30, 2024 are not necessarily indicative of the results that may be expected for the full fiscal year ending August 31, 2025. Certain prior year amounts have been reclassified for consistency with the current period presentation. These reclassifications had no effect on the reported results of operations. An adjustment has been made to the Consolidated Statements of Cash Flows for the three months ended November 30, 2023 to reclassify joint venture receivables, tax receivables and tax payables. The Company evaluates events occurring after the date of the consolidated financial statements, through the date the consolidated financial statements were available to be issued, requiring recording or disclosure in the consolidated financial statements.

Note 2 - New Significant Accoun

Note 2 - New Significant Accounting Policies	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2. NEW SIGNIFICANT ACCOUNTING POLICIES For the three months ended November 30, 2024, there have been no new significant accounting policies from those disclosed in the Company’s annual report on Form 10-K for the fiscal year ended August 31, 2024.

Note 3 - Accounting Pronounceme

Note 3 - Accounting Pronouncements	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	3. ACCOUNTING PRONOUNCEMENTS Recently Issued Accounting Pronouncements In November 2023, the FASB issued Accounting Standards Update (ASU) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures In March 2024, the Securities and Exchange Commission (SEC) adopted rules under SEC Release No. 33-11275, The Enhancement and Standardization of Climate-Related Disclosures for Investors

Note 4 - Inventories

Note 4 - Inventories	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Inventory Disclosure [Text Block]	4. INVENTORIES Inventories consisted of the following: November 30, 2024 August 31, 2024 Production materials $ 5,543,326 $ 5,513,409 Finished goods 8,794,058 8,877,435 $ 14,337,384 $ 14,390,844

Note 5 - Property and Equipment

Note 5 - Property and Equipment, Net	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	5. PROPERTY AND EQUIPMENT, NET Property and equipment, net consisted of the following: November 30, 2024 August 31, 2024 Land $ 1,238,180 $ 1,238,180 Buildings and improvements 14,760,250 14,760,250 Construction in process 4,171,288 3,086,479 Machinery and equipment 7,298,297 7,276,151 27,468,015 26,361,060 Less accumulated depreciation (10,414,776 ) (10,095,407 ) $ 17,053,239 $ 16,265,653 Depreciation expense was $267,155 for the three months ended November 30, 2024, compared to $307,010 for the three months ended November 30, 2023.

Note 6 - Intangible Assets, Net

Note 6 - Intangible Assets, Net	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	6. INTANGIBLE ASSETS, NET Intangible assets, net consisted of the following: As of November 30, 2024 Gross Carrying Accumulated Net Carrying Patents and trademarks $ 3,498,597 $ (2,896,469 ) $ 602,128 Customer relationships 6,347,000 (1,375,183 ) 4,971,817 Total intangible assets, net $ 9,845,597 $ (4,271,652 ) $ 5,573,945 As of August 31, 2024 Gross Carrying Accumulated Net Carrying Patents and trademarks $ 3,459,877 $ (2,854,532 ) $ 605,345 Customer relationships 6,347,000 (1,269,400 ) 5,077,600 Total intangible assets, net $ 9,806,877 $ (4,123,932 ) $ 5,682,945 Amortization expense related to intangible assets was $147,720 and $147,655 for the three months ended November 30, 2024 and 2023, respectively. As of November 30, 2024, future amortization expense related to intangible assets for each of the next five fiscal years and thereafter is estimated as follows: Remainder of fiscal 2025 $ 459,191 Fiscal 2026 485,814 Fiscal 2027 450,739 Fiscal 2028 450,739 Fiscal 2029 450,739 Thereafter 3,276,723 Total $ 5,573,945

Note 7 - Investments in Joint V

Note 7 - Investments in Joint Ventures	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	7. INVESTMENTS IN JOINT VENTURES The consolidated financial statements of the Company’s foreign joint ventures are initially prepared using the accounting principles accepted in the respective joint ventures’ countries of domicile. Amounts related to foreign joint ventures reported in the below tables and the accompanying consolidated financial statements have subsequently been adjusted to conform with U.S. GAAP in all material respects. All material profits on sales recorded that remain on the consolidated balance sheet from the Company to its joint ventures and from joint ventures to other joint ventures have been eliminated for financial reporting purposes. Financial information from the audited and unaudited financial statements of the Company’s joint venture in Germany, Excor Korrosionsschutz – Technologien und Produkte GmbH (EXCOR), and all the Company’s other joint ventures are summarized as follows: As of November 30, 2024 Total EXCOR All Other Current assets $ 56,703,487 $ 26,050,938 $ 30,652,549 Total assets 64,773,897 31,700,918 33,072,979 Current liabilities 12,976,356 2,455,785 10,520,571 Non-current liabilities 300,116 — 300,116 Joint ventures’ equity 51,497,426 29,245,133 22,252,293 NTIC’s share of joint ventures’ equity 25,493,228 14,622,568 10,870,660 NTIC’s share of joint ventures’ undistributed earnings 24,548,560 14,591,663 9,956,897 Three Months Ended November 30, 2024 Total EXCOR All Other Net sales $ 23,837,010 $ 8,738,814 $ 15,098,196 Gross profit 10,315,283 4,757,686 5,557,597 Net income 2,259,187 1,247,500 1,011,687 NTIC’s share of equity in income from joint ventures 1,129,593 623,750 505,843 NTIC’s dividends received from joint ventures — — — As of August 31, 2024 Total EXCOR All Other Current assets $ 56,420,503 $ 26,234,664 $ 30,185,839 Total assets 64,183,071 31,513,288 32,669,783 Current liabilities 12,553,716 2,221,726 10,331,990 Non-current liabilities 323,199 — 323,199 Joint ventures’ equity 51,306,156 29,291,562 22,014,594 NTIC’s share of joint ventures’ equity 25,397,287 14,645,783 10,751,504 NTIC’s share of joint ventures’ undistributed earnings 23,645,685 14,614,878 9,030,807 Three Months Ended November 30, 2023 Total EXCOR All Other Net sales $ 23,560,661 $ 8,420,960 $ 15,139,701 Gross profit 10,103,800 4,375,075 5,728,725 Net income 2,204,482 1,026,907 1,177,575 NTIC’s share of equity in income from joint ventures 1,102,241 513,453 588,788 NTIC’s dividends received from joint ventures 371,104 — 371,104

Note 8 - Corporate Debt

Note 8 - Corporate Debt	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Debt Disclosure [Text Block]	8. CORPORATE DEBT On January 6, 2023, the Company entered into a Credit Agreement (the Credit Agreement) with JPMorgan Chase Bank, N.A. (JPM), which provided the Company with a senior secured revolving line of credit (the Credit Facility) of up to $10.0 million, which included a $5.0 million sublimit for standby letters of credit. Borrowings of $4,518,734 and $4,291,608 were outstanding under the Credit Facility as of November 30, 2024 and August 31, 2024, respectively. The Company was in compliance with all covenants under the Credit Agreement as of November 30, 2024. On January 6, 2025, the Company and JPM entered into an amendment to the Credit Agreement to extend the maturity date of the Credit Facility from January 6, 2025 to January 5, 2026, reduce the availability under the Credit Facility from $10.0 million to $8.0 million and increase the applicable margin for Adjusted SOFR Rate (as defined below) advances from 2.15% to 2.35%. All other material terms of the Credit Facility and the Credit Agreement remain the same. The principal amount under the Credit Facility, together with all accrued unpaid interest and other amounts owing thereunder, if any, will be payable in full on the January 5, 2026 maturity date, unless the Credit Facility is extended or renewed or terminated earlier. Borrowings under the Credit Agreement bear interest at a floating rate, at the option of the Company, equal to either the CB Floating Rate or the Adjusted SOFR Rate. The term “CB Floating Rate” means the greater of the Prime Rate in the United States or 2.50%. The term “Adjusted SOFR Rate” means the term secured overnight financing rate for either one, three or six months (depending on the interest period selected by the Company) plus 0.10% per annum. With respect to any borrowings using an Adjusted SOFR Rate, there is an applicable margin of 2.35% applied per annum. There is no applicable margin with respect to borrowings using a CB Floating Rate. The weighted average interest rate was 7.07% and 7.43% for the three months ended November 30, 2024 and 2023. To secure the Credit Agreement, the Company assigned JPM a continuing security interest in all of its right, title and interest in collateral made up of the assets of the Company. The Credit Agreement contains customary affirmative and negative covenants, including, among other matters, limitations on the Company’s ability to incur additional debt, grant liens, engage in certain business operations and transactions, make certain investments, modify its organizational documents or form any new subsidiaries, subject to certain exceptions. Further, the Credit Agreement contains a negative covenant that restricts the ability of the Company to redeem or repurchase its common stock or pay dividends if the result of which would cause an event of default under the Credit Agreement. The Credit Agreement also requires the Company to maintain a Fixed Charge Coverage Ratio of at least 1.25 to 1.00. The term “Fixed Charge Coverage Ratio” means the ratio, computed for the Company on a consolidated basis, of net income plus income tax expense, plus amortization expense, plus depreciation expense, plus interest expense, and plus dividends received from joint ventures, minus unfinanced capital expenditures and equity in income from joint ventures, all computed for the twelve month period then ending, to scheduled principal payments made, plus scheduled finance lease payments made, plus interest expense paid, plus income tax expense paid, and plus cash distributions and dividends paid, all computed for the same twelve month period then ending. The Credit Agreement also contains customary events of default, including, without limitation, payment defaults, material inaccuracy of representations and warranties, covenant defaults, bankruptcy and insolvency proceedings, cross-defaults to certain other agreements, breach of any financial covenant and change of control. Upon the occurrence and during the continuance of any event of default, JPM may accelerate the payment of the obligations thereunder and exercise various other customary default remedies. On each of April 10, 2023 and May 30, 2023, the Company’s wholly-owned subsidiary in China, NTIC China, entered into a loan agreement with China Construction Bank Corporation. Each term loan provided NTIC China with a RMB 10,000,000 (USD $1.45 million). The term loans mature in April 2025 and June 2025, respectively, unless extended. Both term loans have an annual interest rate of 3.25% with interest due monthly. Both term loans are secured by an office building owned by NTIC China and the loan agreements contain certain financial and other covenants. The Company was in compliance with the covenants as of November 30, 2024. The current outstanding balance for both term loans was USD $2,761,592 as of November 30, 2024 and USD $2,820,835 as of August 31, 2024.

Note 9 - Stockholders' Equity

Note 9 - Stockholders' Equity	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Equity [Text Block]	9. STOCKHOLDERS EQUITY On October 16, 2024, the Company’s Board of Directors declared a cash dividend of $0.07 per share of the Company’s common stock, payable on November 13, 2024 to stockholders of record on October 30, 2024. On October 18, 2023, the Company’s Board of Directors declared a cash dividend of $0.07 per share of the Company’s common stock, payable on November 15, 2023 to stockholders of record on November 1, 2023. During the three months ended November 30, 2024 and 2023, the Company repurchased no The Company issued 3,527 and 3,496 shares of common stock on September 1, 2023 and 2022, respectively, under the Northern Technologies International Corporation Employee Stock Purchase Plan (the ESPP). The ESPP is compensatory for financial reporting purposes. As of November 30, 2024, 51,727 shares of common stock remained available for sale under the ESPP.

Note 10 - Net Income Per Common

Note 10 - Net Income Per Common Share	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Earnings Per Share [Text Block]	10. NET INCOME PER COMMON SHARE Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share assumes the exercise of stock options and the settlement of restricted stock units using the treasury stock method, if dilutive. The following is a reconciliation of the net income per share computation for the three months ended November 30, 2024 and 2023: Three Months Ended November 30, Numerator: 2024 2023 Net income attributable to NTIC $ 561,091 $ 895,521 Denominator: Basic – weighted shares outstanding 9,470,507 9,427,588 Weighted shares assumed upon exercise of stock options and settlement of restricted stock units 283,702 278,993 Diluted – weighted shares outstanding 9,754,209 9,706,581 Basic net income per share: $ 0.06 $ 0.09 Diluted net income per share: $ 0.06 $ 0.09 The dilutive impact summarized above relates to the periods when the average market price of the Company’s common stock exceeded the exercise price of the potentially dilutive option securities granted. Net income per common share was based on the weighted average number of common shares outstanding during the periods when computing basic net income per share. When dilutive, stock options and restricted stock units are included as equivalents using the treasury stock market method when computing the diluted net income per share. Excluded from the computation of diluted net income per share for the three months ended November 30, 2024 were options outstanding to purchase 751,153 shares of common stock. Excluded from the computation of diluted net income per share for the three months ended November 30, 2023 were options outstanding to purchase 580,869 shares of common stock.

Note 11 - Stock-based Compensat

Note 11 - Stock-based Compensation	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	11. STOCK-BASED COMPENSATION Stock Options A summary of stock option activities under the Northern Technologies International Corporation 2024 Stock Incentive Plan (2024 Plan), the Northern Technologies International Corporation Amended and Restated 2019 Stock Incentive Plan and the Northern Technologies International Corporation Amended and Restated 2007 Stock Incentive Plan is as follows: Number of Weighted Outstanding as of August 31, 2024 1,752,667 $ 11.48 Granted 245,190 $ 13.26 Exercised — — Cancelled/Forfeited — — Outstanding as of November 30, 2024 1,997,857 $ 11.69 The weighted average per share fair value of options granted during the three months ended November 30, 2024 and 2023 was $4.95 and $5.05, respectively. The weighted average remaining contractual life of the options outstanding as of November 30, 2024 and 2023 was 6.27 years and 6.55 years, respectively. The Company recognized stock option compensation expense of $304,930 and $350,933 during the three months ended November 30, 2024 and 2023, respectively. As of November 30, 2024, there was $1,916,887 of unrecognized stock option compensation expense. The amount is expected to be recognized over a period of 2.75 years. Restricted Stock Units Restricted stock units were granted under the 2024 Plan on September 1, 2024 to certain non-employee directors during the three months ended November 30, 2024 and vest in full on the one-year anniversary of the date of grant. A summary of restricted stock unit activity for the three months ended November 30, 2024 is as follows: Number of Weighted Outstanding as of August 31, 2024 — $ — Granted 11,313 13.14 Vested/Settled — — Cancelled/Forfeited — — Outstanding as of November 30, 2024 11,313 $ 13.14 Restricted stock units are valued using the closing stock price on the grant date. The Company recognizes the grant date fair value of the restricted stock units over one year. For the three months ended November 30, 2024, the Company recognized $36,960 in stock-based compensation expense. As of November 30, 2024, there is an unrecognized stock-based compensation expense of $111,692, which is expected to be recognized over 0.75 years.

Note 12 - Segment and Geographi

Note 12 - Segment and Geographic Information	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	12. SEGMENT AND GEOGRAPHIC INFORMATION Segment Information The Company’s chief operating decision maker is its Chief Executive Officer. The Company’s business is organized into two The following table sets forth the Company’s net sales for the three months ended November 30, 2024 and 2023 by segment: Three Months Ended November 30, 2024 2023 ZERUST® net sales $ 15,475,803 $ 15,405,745 Natur-Tec® net sales 5,862,590 4,775,930 Total net sales $ 21,338,393 $ 20,181,675 The following table sets forth the Company’s cost of goods sold for the three months ended November 30, 2024 and 2023 by segment: November 30, % of November 30, % of Direct cost of goods sold ZERUST® $ 8,678,706 56.1 % $ 8,744,024 56.8 % Natur-Tec® 3,689,183 62.9 % 3,228,583 67.6 % Indirect cost of goods sold 807,551 NA 874,794 NA Total net cost of goods sold $ 13,175,440 $ 12,847,401 * The percent of product sales is calculated by dividing the direct cost of goods sold for each individual segment category by the net sales for each segment category. The Company utilizes product net sales and direct and indirect cost of goods sold for each product in reviewing the financial performance of a product type. Further allocation of Company expenses or assets, aside from amounts presented in the tables above, is not utilized in evaluating product performance, nor does such allocation occur for internal financial reporting. Geographic Information Net sales by geographic location for the three months ended November 30, 2024 and 2023 were as follows: Three Months Ended November 30, 2024 2023 Inside the U.S. to unaffiliated customers $ 13,088,319 $ 12,097,843 Outside the U.S. to: Joint ventures in which the Company is a shareholder directly and indirectly 767,456 851,452 Unaffiliated customers 7,482,618 7,232,380 $ 21,338,393 $ 20,181,675 Net sales by geographic location are based on the location of the customer. Fees for services provided to joint ventures by geographic location as a percentage of total fees for services provided to joint ventures during the three months ended November 30, 2024 and 2023 were as follows: Three Months Ended November 30, 2024 % of Total Fees 2023 % of Total Fees for Poland $ 220,010 17.1 % $ 198,017 15.9 % Germany 206,329 16.1 % 205,643 16.5 % Japan 148,538 11.6 % 136,081 10.9 % Finland 131,460 10.2 % 103,744 8.3 % United Kingdom 116,226 9.1 % 63,149 5.1 % Thailand 94,165 7.3 % 79,438 6.4 % France 79,064 6.2 % 121,966 9.8 % Czech Republic 72,631 5.7 % 77,812 6.2 % South Korea 67,701 5.3 % 74,957 6.0 % Sweden 66,928 5.2 % 110,536 8.9 % Other 81,067 6.3 % 77,615 6.2 % $ 1,284,119 100.0 % $ 1,248,958 100.0 % The geographical distribution of total property and equipment and net sales is as follows: At November 30, 2024 At August 31, 2024 China $ 5,453,786 $ 5,627,202 Other 1,212,917 1,217,400 United States 10,386,536 9,421,051 Total property and equipment, net $ 17,053,239 $ 16,265,653 Three Months Ended November 30, 2024 2023 China $ 3,994,769 $ 3,678,523 Brazil 1,385,194 1,529,623 India 6,045,735 5,180,391 Other 2,430,077 2,560,757 United States 7,482,618 7,232,381 Total net sales $ 21,338,393 $ 20,181,675 Long-lived assets consist of property and equipment. These assets are periodically reviewed to assure the net realizable value from the estimated future production based on forecasted sales exceeds the carrying value of the assets. Sales to the Company’s joint ventures are included in the foregoing segment and geographic information; however, sales by the Company’s joint ventures to other parties are not included. The foregoing segment and geographic information represents only sales recognized directly by the Company and sold in that geographic territory. All joint venture operations, including equity in income, fees for services and related dividends, are primarily related to ZERUST® products and services.

Note 13 - Commitments and Conti

Note 13 - Commitments and Contingencies	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	13. COMMITMENTS AND CONTINGENCIES Legal Matters From time to time, the Company is subject to various other claims and legal actions in the ordinary course of its business. The Company records a liability in its consolidated financial statements for costs related to claims, including future legal costs, settlements and judgments, where the Company has assessed that a loss is probable, and an amount could be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when no amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is not probable or the amount is not estimable, or both, if there is a reasonable possibility that material loss may have been incurred. In the opinion of management, as of November 30, 2024, the amount of liability, if any, with respect to these matters, individually or in the aggregate, will not materially affect the Company’s consolidated results of operations, financial position or cash flows.

Note 14 - Supplemental Cash Flo

Note 14 - Supplemental Cash Flow Information	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Cash Flow, Supplemental Disclosures [Text Block]	14. SUPPLEMENTAL CASH FLOW INFORMATION Supplemental disclosures of cash flow information consisted of: Three Months Ended November 30, 2024 2023 Cash paid for interest $ 120,220 $ 111,138

Note 15 - Income Taxes

Note 15 - Income Taxes	3 Months Ended
	Nov. 30, 2024
Notes to Financial Statements
Income Tax Disclosure [Text Block]	15. INCOME TAXES Income tax expense for the three months ended November 30, 2024 was $217,871 compared to $226,796 for the three months ended November 30, 2023. The expense was largely due to foreign operations. The Company has federal and state tax credit carry forwards, net operating loss carry forwards and foreign tax carry forwards. The Company has recorded a full valuation allowance against the U.S. deferred tax assets as of November 30, 2024 and August 31, 2024.

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Nov. 30, 2024
Insider Trading Arr Line Items
Material Terms of Trading Arrangement [Text Block]	ITEM 5. OTHER INFORMATION Credit Agreement On January 6, 2025, the Company and JPM entered into an amendment to the Credit Agreement to extend the maturity date of the Credit Facility from January 6, 2025 to January 5, 2026, reduce the availability under the Credit Facility from $10.0 million to $8.0 million and increase the applicable margin for Adjusted SOFR Rate (as defined below) advances from 2.15% to 2.35%. All other material terms of the Credit Facility and the Credit Agreement remain the same. The foregoing represents only a summary of the material terms of the amendment to the Credit Agreement, does not purport to be complete and is qualified in its entirety by reference to the complete text of the amendment to the Credit Agreement and new Line of Credit Note, which are filed as Exhibit 10.1 and Exhibit 10.2, respectively, to this quarterly report on Form 10-Q, and are incorporated by reference herein. Rule 10b5-1 Plan and Non-Rule 10b5-1 Trading Arrangement Adoptions, Terminations, and Modifications During the three months ended November 30, 2024, none Material Changes to the Procedures by Which Security Holders May Recommend Nominees to the Registrant's Board of Directors On November 14, 2024, NTIC’s Board of Directors approved and adopted Third Amended and Restated Bylaws (the “Amended and Restated Bylaws”) incorporating certain amendments, including amendments in response to recent developments in Delaware law. The Amended and Restated Bylaws became effective immediately upon their approval and adoption by the Board of Directors. The amendments reflected in the Amended and Restated Bylaws include, among other changes: (i) limiting certain disclosure requirements to bring forth a stockholder proposal or director nomination to the stockholder giving notice, any beneficial owners of such stockholder and stockholders who are known to financially support such stockholder proposal or director nomination; and (ii) incorporating other non-substantive, conforming changes. The foregoing summary of the Amended and Restated Bylaws is qualified in its entirety by reference to the complete text of the Amended and Restated Bylaws, as approved, adopted, and effective on November 14, 2024, which is filed as Exhibit 3.1 to this quarterly report on Form 10-Q and incorporated by reference herein.
Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Schedule of Inventory, Current [Table Text Block]	November 30, 2024 August 31, 2024 Production materials $ 5,543,326 $ 5,513,409 Finished goods 8,794,058 8,877,435 $ 14,337,384 $ 14,390,844

Note 5 - Property and Equipme_2

Note 5 - Property and Equipment, Net (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Property, Plant and Equipment [Table Text Block]	November 30, 2024 August 31, 2024 Land $ 1,238,180 $ 1,238,180 Buildings and improvements 14,760,250 14,760,250 Construction in process 4,171,288 3,086,479 Machinery and equipment 7,298,297 7,276,151 27,468,015 26,361,060 Less accumulated depreciation (10,414,776 ) (10,095,407 ) $ 17,053,239 $ 16,265,653

Note 6 - Intangible Assets, N_2

Note 6 - Intangible Assets, Net (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	As of November 30, 2024 Gross Carrying Accumulated Net Carrying Patents and trademarks $ 3,498,597 $ (2,896,469 ) $ 602,128 Customer relationships 6,347,000 (1,375,183 ) 4,971,817 Total intangible assets, net $ 9,845,597 $ (4,271,652 ) $ 5,573,945 As of August 31, 2024 Gross Carrying Accumulated Net Carrying Patents and trademarks $ 3,459,877 $ (2,854,532 ) $ 605,345 Customer relationships 6,347,000 (1,269,400 ) 5,077,600 Total intangible assets, net $ 9,806,877 $ (4,123,932 ) $ 5,682,945
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Remainder of fiscal 2025 $ 459,191 Fiscal 2026 485,814 Fiscal 2027 450,739 Fiscal 2028 450,739 Fiscal 2029 450,739 Thereafter 3,276,723 Total $ 5,573,945

Note 7 - Investments in Joint_2

Note 7 - Investments in Joint Ventures (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Condensed Balance Sheet [Table Text Block]	As of November 30, 2024 Total EXCOR All Other Current assets $ 56,703,487 $ 26,050,938 $ 30,652,549 Total assets 64,773,897 31,700,918 33,072,979 Current liabilities 12,976,356 2,455,785 10,520,571 Non-current liabilities 300,116 — 300,116 Joint ventures’ equity 51,497,426 29,245,133 22,252,293 NTIC’s share of joint ventures’ equity 25,493,228 14,622,568 10,870,660 NTIC’s share of joint ventures’ undistributed earnings 24,548,560 14,591,663 9,956,897 As of August 31, 2024 Total EXCOR All Other Current assets $ 56,420,503 $ 26,234,664 $ 30,185,839 Total assets 64,183,071 31,513,288 32,669,783 Current liabilities 12,553,716 2,221,726 10,331,990 Non-current liabilities 323,199 — 323,199 Joint ventures’ equity 51,306,156 29,291,562 22,014,594 NTIC’s share of joint ventures’ equity 25,397,287 14,645,783 10,751,504 NTIC’s share of joint ventures’ undistributed earnings 23,645,685 14,614,878 9,030,807
Condensed Income Statement [Table Text Block]	Three Months Ended November 30, 2024 Total EXCOR All Other Net sales $ 23,837,010 $ 8,738,814 $ 15,098,196 Gross profit 10,315,283 4,757,686 5,557,597 Net income 2,259,187 1,247,500 1,011,687 NTIC’s share of equity in income from joint ventures 1,129,593 623,750 505,843 NTIC’s dividends received from joint ventures — — — Three Months Ended November 30, 2023 Total EXCOR All Other Net sales $ 23,560,661 $ 8,420,960 $ 15,139,701 Gross profit 10,103,800 4,375,075 5,728,725 Net income 2,204,482 1,026,907 1,177,575 NTIC’s share of equity in income from joint ventures 1,102,241 513,453 588,788 NTIC’s dividends received from joint ventures 371,104 — 371,104

Note 10 - Net Income Per Comm_2

Note 10 - Net Income Per Common Share (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended November 30, Numerator: 2024 2023 Net income attributable to NTIC $ 561,091 $ 895,521 Denominator: Basic – weighted shares outstanding 9,470,507 9,427,588 Weighted shares assumed upon exercise of stock options and settlement of restricted stock units 283,702 278,993 Diluted – weighted shares outstanding 9,754,209 9,706,581 Basic net income per share: $ 0.06 $ 0.09 Diluted net income per share: $ 0.06 $ 0.09

Note 11 - Stock-based Compens_2

Note 11 - Stock-based Compensation (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	Number of Weighted Outstanding as of August 31, 2024 1,752,667 $ 11.48 Granted 245,190 $ 13.26 Exercised — — Cancelled/Forfeited — — Outstanding as of November 30, 2024 1,997,857 $ 11.69
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	Number of Weighted Outstanding as of August 31, 2024 — $ — Granted 11,313 13.14 Vested/Settled — — Cancelled/Forfeited — — Outstanding as of November 30, 2024 11,313 $ 13.14

Note 12 - Segment and Geograp_2

Note 12 - Segment and Geographic Information (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Three Months Ended November 30, 2024 2023 ZERUST® net sales $ 15,475,803 $ 15,405,745 Natur-Tec® net sales 5,862,590 4,775,930 Total net sales $ 21,338,393 $ 20,181,675
Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block]	November 30, % of November 30, % of Direct cost of goods sold ZERUST® $ 8,678,706 56.1 % $ 8,744,024 56.8 % Natur-Tec® 3,689,183 62.9 % 3,228,583 67.6 % Indirect cost of goods sold 807,551 NA 874,794 NA Total net cost of goods sold $ 13,175,440 $ 12,847,401
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Three Months Ended November 30, 2024 2023 Inside the U.S. to unaffiliated customers $ 13,088,319 $ 12,097,843 Outside the U.S. to: Joint ventures in which the Company is a shareholder directly and indirectly 767,456 851,452 Unaffiliated customers 7,482,618 7,232,380 $ 21,338,393 $ 20,181,675 Three Months Ended November 30, 2024 % of Total Fees 2023 % of Total Fees for Poland $ 220,010 17.1 % $ 198,017 15.9 % Germany 206,329 16.1 % 205,643 16.5 % Japan 148,538 11.6 % 136,081 10.9 % Finland 131,460 10.2 % 103,744 8.3 % United Kingdom 116,226 9.1 % 63,149 5.1 % Thailand 94,165 7.3 % 79,438 6.4 % France 79,064 6.2 % 121,966 9.8 % Czech Republic 72,631 5.7 % 77,812 6.2 % South Korea 67,701 5.3 % 74,957 6.0 % Sweden 66,928 5.2 % 110,536 8.9 % Other 81,067 6.3 % 77,615 6.2 % $ 1,284,119 100.0 % $ 1,248,958 100.0 %
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	At November 30, 2024 At August 31, 2024 China $ 5,453,786 $ 5,627,202 Other 1,212,917 1,217,400 United States 10,386,536 9,421,051 Total property and equipment, net $ 17,053,239 $ 16,265,653
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended November 30, 2024 2023 China $ 3,994,769 $ 3,678,523 Brazil 1,385,194 1,529,623 India 6,045,735 5,180,391 Other 2,430,077 2,560,757 United States 7,482,618 7,232,381 Total net sales $ 21,338,393 $ 20,181,675

Note 14 - Supplemental Cash F_2

Note 14 - Supplemental Cash Flow Information (Tables)	3 Months Ended
	Nov. 30, 2024
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	Three Months Ended November 30, 2024 2023 Cash paid for interest $ 120,220 $ 111,138

Note 4 - Inventories - Inventor

Note 4 - Inventories - Inventories (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Production materials	$ 5,543,326	$ 5,513,409
Finished goods	8,794,058	8,877,435
Inventory, Net	$ 14,337,384	$ 14,390,844

Note 5 - Property and Equipme_3

Note 5 - Property and Equipment, Net (Details Textual) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Depreciation expense	$ 267,155	$ 307,010

Note 5 - Property and Equipme_4

Note 5 - Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Land	$ 1,238,180	$ 1,238,180
Buildings and improvements	14,760,250	14,760,250
Construction in process	4,171,288	3,086,479
Machinery and equipment	7,298,297	7,276,151
Property, Plant and Equipment, Gross	27,468,015	26,361,060
Less accumulated depreciation	(10,414,776)	(10,095,407)
Property, Plant and Equipment, Net	$ 17,053,239	$ 16,265,653

Note 6 - Intangible Assets, N_3

Note 6 - Intangible Assets, Net (Details Textual) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Amortization of Intangible Assets	$ 147,720	$ 147,655

Note 6 - Intangible Assets, N_4

Note 6 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Gross Carrying Amount	$ 9,845,597	$ 9,806,877
Accumulated Amortization	(4,271,652)	(4,123,932)
Net Carrying Amount	5,573,945	5,682,945
Patents and Trademarks [Member]
Gross Carrying Amount	3,498,597	3,459,877
Accumulated Amortization	(2,896,469)	(2,854,532)
Net Carrying Amount	602,128	605,345
Customer Relationships [Member]
Gross Carrying Amount	6,347,000	6,347,000
Accumulated Amortization	(1,375,183)	(1,269,400)
Net Carrying Amount	$ 4,971,817	$ 5,077,600

Note 6 - Intangible Assets, N_5

Note 6 - Intangible Assets, Net - Future Amortization Expense (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Remainder of fiscal 2025	$ 459,191
Fiscal 2026	485,814
Fiscal 2027	450,739
Fiscal 2028	450,739
Fiscal 2029	450,739
Thereafter	3,276,723
Total	$ 5,573,945	$ 5,682,945

Note 7 - Investments in Joint_3

Note 7 - Investments in Joint Ventures - Condensed Balance Sheet of EXCOR and All Other Joint Ventures (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Current assets	$ 40,302,350	$ 41,579,219
Total assets	94,037,655	94,676,502
Current liabilities	18,118,922	17,896,943
Non-current liabilities	1,611,684	1,604,238
Joint ventures’ equity	70,213,332	71,193,991
Investments in joint ventures	25,492,921	25,397,287
EXCOR and All Other Joint Venturs [Member]
Investments in joint ventures	25,493,228	25,397,287
NTIC’s share of joint ventures’ undistributed earnings	24,548,560	23,645,685
EXCOR [Member]
Investments in joint ventures	14,622,568	14,645,783
NTIC’s share of joint ventures’ undistributed earnings	14,591,663	14,614,878
All Other [Member]
Investments in joint ventures	10,870,660	10,751,504
NTIC’s share of joint ventures’ undistributed earnings	9,956,897	9,030,807
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Current assets	56,703,487	56,420,503
Total assets	64,773,897	64,183,071
Current liabilities	12,976,356	12,553,716
Non-current liabilities	300,116	323,199
Joint ventures’ equity	51,497,426	51,306,156
EXCOR [Member]
Current assets	26,050,938	26,234,664
Total assets	31,700,918	31,513,288
Current liabilities	2,455,785	2,221,726
Non-current liabilities	0	0
Joint ventures’ equity	29,245,133	29,291,562
Joint Ventures in France [Member]
Current assets		30,185,839
Total assets		32,669,783
Current liabilities		10,331,990
Non-current liabilities		323,199
Joint ventures’ equity		$ 22,014,594
All Other [Member]
Current assets	30,652,549
Total assets	33,072,979
Current liabilities	10,520,571
Non-current liabilities	300,116
Joint ventures’ equity	$ 22,252,293

Note 7 - Investments in Joint_4

Note 7 - Investments in Joint Ventures - Condensed Income Statement of EXCOR and All Other Joint Ventures (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Net sales	$ 21,338,393	$ 20,181,675
Gross profit	8,162,953	7,334,274
Net income	561,091	895,521
NTIC’s share of equity in income from joint ventures	1,129,593	1,102,241
EXCOR and All Other Joint Venturs [Member]
Net income	2,259,187	2,204,482
NTIC’s share of equity in income from joint ventures	1,129,593	1,102,241
NTIC’s dividends received from joint ventures	0	371,104
EXCOR [Member]
Net income	1,247,500	1,026,907
NTIC’s share of equity in income from joint ventures	623,750	513,453
NTIC’s dividends received from joint ventures	0	0
All Other [Member]
Net income	1,011,687	1,177,575
NTIC’s share of equity in income from joint ventures	505,843	588,788
NTIC’s dividends received from joint ventures	0	371,104
EXCOR and All Other Joint Venturs [Member]
Net sales	23,837,010	23,560,661
Gross profit	10,315,283	10,103,800
EXCOR [Member]
Net sales	8,738,814	8,420,960
Gross profit	4,757,686	4,375,075
All Other [Member]
Net sales	15,098,196	15,139,701
Gross profit	$ 5,557,597	$ 5,728,725

Note 8 - Corporate Debt (Detail

Note 8 - Corporate Debt (Details Textual)	Jan. 06, 2025 USD ($)	Jan. 06, 2023 USD ($)	Nov. 30, 2024 USD ($)	Aug. 31, 2024 USD ($)	Nov. 30, 2023	May 30, 2023 USD ($)	May 30, 2023 CNY (¥)
NTIC China [Member] | Term Loan in May [Member]
Debt Instrument, Face Amount						$ 1,450,000	¥ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage						3.25%	3.25%
Long-Term Debt			$ 2,761,592	$ 2,820,835
Revolving Credit Facility [Member] | JP Morgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 10,000,000
Long-Term Line of Credit			$ 4,518,734	$ 4,291,608
Line of Credit Facility, Interest Rate at Period End			7.07%		7.43%
Revolving Credit Facility [Member] | JP Morgan Chase Bank [Member] | Adjusted SOFR Rate Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate		2.15%
Revolving Credit Facility [Member] | JP Morgan Chase Bank [Member] | Subsequent Event [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 8,000,000
CB Floating Rate Floor	2.50%
Debt Instrument, Covenants, Fixed Charge Coverage Ratio	1.25
Revolving Credit Facility [Member] | JP Morgan Chase Bank [Member] | Subsequent Event [Member] | Adjusted SOFR Rate Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	2.35%
Revolving Credit Facility [Member] | JP Morgan Chase Bank [Member] | Subsequent Event [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Standby Letters of Credit [Member] | JP Morgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 5,000,000

Note 9 - Stockholders' Equity (

Note 9 - Stockholders' Equity (Details Textual) - $ / shares					3 Months Ended
	Oct. 16, 2024	Oct. 18, 2023	Sep. 01, 2023	Sep. 01, 2022	Nov. 30, 2024	Nov. 30, 2023
Stock Repurchased and Retired During Period, Shares (in shares)					0	0
Stock Issued During Period, Shares, Employee Stock Purchase Plans			3,527	3,496
ESPP [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant					51,727
O 2025 Q1 Dividends [Member]
Dividends Payable, Date Declared	Oct. 16, 2024
Dividends Payable, Amount Per Share	$ 0.07
Dividends Payable, Date to be Paid	Nov. 13, 2024
Dividends Payable, Date of Record	Oct. 30, 2024
O 2024 Q1 Dividends [Member]
Dividends Payable, Date Declared		Oct. 18, 2023
Dividends Payable, Amount Per Share		$ 0.07
Dividends Payable, Date to be Paid		Nov. 15, 2023
Dividends Payable, Date of Record		Nov. 01, 2023

Note 10 - Net Income Per Comm_3

Note 10 - Net Income Per Common Share (Details Textual) - shares	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	751,153	580,869

Note 10 - Net Income Per Comm_4

Note 10 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Net income	$ 561,091	$ 895,521
Basic – weighted shares outstanding (in shares)	9,470,507	9,427,588
Weighted shares assumed upon exercise of stock options and settlement of restricted stock units (in shares)	283,702	278,993
Diluted – weighted shares outstanding (in shares)	9,754,209	9,706,581
Basic net income per share: (in dollars per share)	$ 0.06	$ 0.09
Diluted net income per share: (in dollars per share)	$ 0.06	$ 0.09

Note 11 - Stock-based Compens_3

Note 11 - Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 4.95	$ 5.05
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)	6 years 3 months 7 days	6 years 6 months 18 days
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense	$ 304,930	$ 350,933
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 1,916,887
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 9 months
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Expense	$ 36,960
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 111,692
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	9 months

Note 11 - Stock-based Compens_4

Note 11 - Stock-based Compensation - Stock Option Activity (Details)	3 Months Ended
	Nov. 30, 2024 $ / shares shares
Outstanding, shares (in shares) | shares	1,752,667
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 11.48
Options granted, shares (in shares) | shares	245,190
Options granted, weighted average exercise price (in dollars per share) | $ / shares	$ 13.26
Options exercised, shares (in shares) | shares	0
Options exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 0
Options cancelled/forfeited, shares (in shares) | shares	0
Options cancelled/forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 0
Outstanding, shares (in shares) | shares	1,997,857
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 11.69

Note 11 - Stock-based Compens_5

Note 11 - Stock-based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) [Member]	3 Months Ended
	Nov. 30, 2024 $ / shares shares
RSU outstanding, shares (in shares) | shares	0
RSU outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
RSU granted, shares (in shares) | shares	11,313
RSU granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 13.14
RSU vested/settled, shares (in shares) | shares	0
RSU vested/settled, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
RSU cancelled/forfeited, shares (in shares) | shares	0
RSU cancelled/forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
RSU outstanding, shares (in shares) | shares	11,313
RSU outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 13.14

Note 12 - Segment and Geograp_3

Note 12 - Segment and Geographic Information (Details Textual)	3 Months Ended
	Nov. 30, 2024
2	2

Note 12 - Segment and Geograp_4

Note 12 - Segment and Geographic Information - Net Sales by Segment (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Net sales	$ 21,338,393	$ 20,181,675
ZERUST [Member]
Net sales	15,475,803	15,405,745
NaturTec [Member]
Net sales	$ 5,862,590	$ 4,775,930

Note 12 - Segment and Geograp_5

Note 12 - Segment and Geographic Information - Cost of Goods Sold by Segment (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Cost of goods sold	$ 13,175,440	$ 12,847,401
Direct Cost of Goods Sold [Member] | ZERUST [Member]
Cost of goods sold	$ 8,678,706	$ 8,744,024
Cost of goods sold, percentage	56.10%	56.80%
Direct Cost of Goods Sold [Member] | NaturTec [Member]
Cost of goods sold	$ 3,689,183	$ 3,228,583
Cost of goods sold, percentage	62.90%	67.60%
Indirect Cost of Goods Sold [Member]
Cost of goods sold	$ 807,551	$ 874,794

Note 12 - Segment and Geograp_6

Note 12 - Segment and Geographic Information - Information by Geographic Location (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Net sales	$ 21,338,393	$ 20,181,675
Total Fees	$ 1,284,119	$ 1,248,958
Total Fees percentage	100%	100%
Inside the USA to Unaffiliated Customers [Member]
Net sales	$ 13,088,319	$ 12,097,843
POLAND
Total Fees	$ 220,010	$ 198,017
Total Fees percentage	17.10%	15.90%
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	$ 767,456	$ 851,452
GERMANY
Total Fees	$ 206,329	$ 205,643
Total Fees percentage	16.10%	16.50%
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 7,482,618	$ 7,232,380
JAPAN
Total Fees	$ 148,538	$ 136,081
Total Fees percentage	11.60%	10.90%
FINLAND
Total Fees	$ 131,460	$ 103,744
Total Fees percentage	10.20%	8.30%
UNITED KINGDOM
Total Fees	$ 116,226	$ 63,149
Total Fees percentage	9.10%	5.10%
THAILAND
Total Fees	$ 94,165	$ 79,438
Total Fees percentage	7.30%	6.40%
FRANCE
Total Fees	$ 79,064	$ 121,966
Total Fees percentage	6.20%	9.80%
CZECHIA
Total Fees	$ 72,631	$ 77,812
Total Fees percentage	5.70%	6.20%
KOREA, REPUBLIC OF
Total Fees	$ 67,701	$ 74,957
Total Fees percentage	5.30%	6%
SWEDEN
Total Fees	$ 66,928	$ 110,536
Total Fees percentage	5.20%	8.90%
Other Countries [Member]
Net sales	$ 2,430,077	$ 2,560,757
Total Fees	$ 81,067	$ 77,615
Total Fees percentage	6.30%	6.20%

Note 12 - Segment and Geograp_7

Note 12 - Segment and Geographic Information - Schedule of Geographic Distribution (Details) - USD ($)	Nov. 30, 2024	Aug. 31, 2024
Total property and equipment, net	$ 17,053,239	$ 16,265,653
CHINA
Total property and equipment, net	5,453,786	5,627,202
Other Countries [Member]
Total property and equipment, net	1,212,917	1,217,400
UNITED STATES
Total property and equipment, net	$ 10,386,536	$ 9,421,051

Note 12 - Segment and Geograp_8

Note 12 - Segment and Geographic Information - Schedule of Geographic Distribution of Revenue (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Total net sales	$ 21,338,393	$ 20,181,675
CHINA
Total net sales	3,994,769	3,678,523
BRAZIL
Total net sales	1,385,194	1,529,623
INDIA
Total net sales	6,045,735	5,180,391
Other Countries [Member]
Total net sales	2,430,077	2,560,757
UNITED STATES
Total net sales	$ 7,482,618	$ 7,232,381

Note 14 - Supplemental Cash F_3

Note 14 - Supplemental Cash Flow Information - Supplemental Disclosures of Cash Flow Information (Details) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Cash paid for interest	$ 120,220	$ 111,138

Note 15 - Income Taxes (Details

Note 15 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Foreign Withholding Tax	$ 217,871	$ 226,796