Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
NET SALES:
Net sales, excluding joint ventures	$ 8,309,586	$ 7,027,614	$ 17,191,551	$ 13,529,024
Net sales, to joint ventures	433,317	677,320	1,253,375	1,200,347
Total net sales	8,742,903	7,704,934	18,444,926	14,729,371
Cost of goods sold	5,870,186	5,268,224	12,482,952	10,143,647
Gross profit	2,872,717	2,436,710	5,961,974	4,585,724
JOINT VENTURE OPERATIONS:
Equity in income of joint ventures	1,383,139	952,667	2,657,143	1,936,420
Fees for services provided to joint ventures	1,184,028	971,042	2,499,619	2,456,471
Total joint venture operations	2,567,167	1,923,709	5,156,762	4,392,891
OPERATING EXPENSES:
Selling expenses	2,246,482	1,475,433	4,285,566	3,000,516
General and administrative expenses	1,842,528	1,806,557	4,314,308	3,981,164
Research and development expenses	742,037	1,113,525	1,384,559	2,117,622
Total operating expenses	4,831,047	4,395,515	9,984,433	9,099,302
OPERATING INCOME (LOSS)	608,837	(35,096)	1,134,303	(120,687)
INTEREST INCOME	4,516	14,384	8,079	28,557
INTEREST EXPENSE	(3,470)	(10,796)	(8,093)	(15,522)
OTHER INCOME		961		961
INCOME (LOSS) BEFORE INCOME TAX EXPENSE	609,883	(30,547)	1,134,289	(106,691)
INCOME TAX EXPENSE	124,909	40,466	242,622	36,964
NET INCOME (LOSS)	484,974	(71,013)	891,667	(143,655)
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	98,008	36,776	207,062	198,485
NET INCOME (LOSS) ATTRIBUTABLE TO NTIC	$ 386,966	$ (107,789)	$ 684,605	$ (342,140)
NET INCOME (LOSS) ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.09	$ (0.02)	$ 0.15	$ (0.08)
Diluted (in dollars per share)	$ 0.09	$ (0.02)	$ 0.15	$ (0.08)
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in shares)	4,525,091	4,537,429	4,527,555	4,536,995
Diluted (in shares)	4,562,024	4,537,429	4,559,485	4,536,995