Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
NET SALES:
Net sales, excluding joint ventures	$ 5,995,543	$ 5,527,366	$ 12,476,534	$ 11,132,384
Net sales, to joint ventures	733,166	691,642	1,466,270	1,395,724
Total net sales	6,728,709	6,219,008	13,942,804	12,528,108
Cost of goods sold	4,657,740	4,051,833	9,464,351	8,209,864
Gross profit	2,070,969	2,167,175	4,478,453	4,318,244
JOINT VENTURE OPERATIONS:
Equity in income of joint ventures	1,474,649	1,395,451	3,081,332	2,823,199
Fees for services provided to joint ventures	994,860	2,057,671	3,128,530	4,167,319
Total joint venture operations	2,469,509	3,453,122	6,209,862	6,990,518
OPERATING EXPENSES:
Selling expenses	1,339,441	1,291,316	2,734,328	2,610,202
General and administrative expenses	1,552,861	1,209,933	3,091,123	2,597,429
Expenses incurred in support of joint ventures	656,127	366,469	1,183,244	695,733
Research and development expenses	854,256	1,099,345	1,904,169	2,237,865
Total operating expenses	4,402,685	3,967,063	8,912,864	8,141,229
OPERATING INCOME	137,793	1,653,234	1,775,451	3,167,533
INTEREST INCOME	2,434	2,570	17,561	4,359
INTEREST EXPENSE	(3,223)	(11,976)	(8,228)	(25,646)
OTHER INCOME	2,145		2,145
INCOME BEFORE INCOME TAX EXPENSE	139,149	1,643,828	1,786,929	3,146,246
INCOME TAX EXPENSE	197,614	259,759	381,298	457,759
NET (LOSS) INCOME	(58,465)	1,384,069	1,405,631	2,688,487
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	70,179	359,025	526,010	804,857
NET (LOSS) INCOME ATTRIBUTABLE TO NTIC	$ (128,644)	$ 1,025,044	$ 879,621	$ 1,883,630
NET (LOSS) INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in Dollars per share)	$ (0.03)	$ 0.23	$ 0.20	$ 0.42
Diluted (in Dollars per share)	$ (0.03)	$ 0.22	$ 0.19	$ 0.41
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in Shares)	4,522,514	4,434,837	4,516,311	4,434,770
Diluted (in Shares)	4,522,514	4,579,603	4,655,792	4,566,103