Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
NET SALES:
Net sales, excluding joint ventures	$ 12,255,941	$ 12,988,153	$ 24,454,749	$ 27,033,937
Net sales, to joint ventures	526,941	245,630	1,107,245	831,246
Total net sales	12,782,882	13,233,783	25,561,994	27,865,183
Cost of goods sold	8,531,679	8,687,301	16,845,000	18,492,385
Gross profit	4,251,203	4,546,482	8,716,994	9,372,798
JOINT VENTURE OPERATIONS:
Equity in income from joint ventures	1,920,012	1,360,804	3,745,724	2,654,794
Fees for services provided to joint ventures	1,462,684	1,256,213	2,799,245	2,614,538
Total joint venture operations	3,382,696	2,617,017	6,544,969	5,269,332
OPERATING EXPENSES:
Selling expenses	2,832,008	3,110,240	5,573,776	5,997,532
General and administrative expenses	1,958,974	2,345,113	4,052,956	4,394,800
Research and development expenses	1,075,180	1,006,395	2,150,917	1,968,036
Total operating expenses	5,866,162	6,461,748	11,777,649	12,360,368
OPERATING INCOME	1,767,737	701,751	3,484,314	2,281,762
INTEREST INCOME	15,638	55,042	85,176	104,080
INTEREST EXPENSE	(5,249)	(9,377)	(7,617)	(14,821)
INCOME BEFORE INCOME TAX EXPENSE	1,778,126	747,416	3,561,873	2,371,021
INCOME TAX EXPENSE	274,660	463,594	653,250	727,660
NET INCOME	1,503,466	283,822	2,908,623	1,643,361
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	190,891	103,988	333,649	250,977
NET INCOME ATTRIBUTABLE TO NTIC	$ 1,312,575	$ 179,834	$ 2,574,974	$ 1,392,384
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.14	$ 0.02	$ 0.28	$ 0.15
Diluted (in dollars per share)	$ 0.13	$ 0.02	$ 0.26	$ 0.15
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in shares)	9,104,636	9,097,236	9,104,623	9,095,604
Diluted (in shares)	9,867,918	9,461,727	9,756,268	9,383,867
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.065	$ 0.065	$ 0.065	$ 0.13