Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2012	May 31, 2011
NET SALES:
Net sales, excluding joint ventures	$ 7,175,825	$ 4,367,589	$ 15,579,086	$ 11,906,999
Net sales, to joint ventures	629,079	733,189	2,032,260	2,070,338
Total net sales	7,804,904	5,100,778	17,611,346	13,977,337
Cost of goods sold	4,143,514	3,458,851	10,833,072	9,155,788
Gross profit	3,661,390	1,641,927	6,778,274	4,821,549
JOINT VENTURE OPERATIONS:
Equity in income of joint ventures	1,822,972	1,724,477	4,405,327	4,549,267
Fees for services provided to joint ventures	734,337	1,623,585	3,477,715	4,477,514
Total joint venture operations	2,557,309	3,348,062	7,883,042	9,026,781
OPERATING EXPENSES:
Selling expenses	1,270,996	1,167,630	3,393,564	3,088,237
General and administrative expenses	1,147,744	1,126,823	3,518,569	3,300,626
Expenses incurred in support of joint ventures	294,169	244,959	729,990	722,955
Research and development expenses	1,067,454	1,207,889	2,856,536	3,308,515
Total operating expenses	3,780,363	3,747,301	10,498,659	10,420,333
OPERATING INCOME	2,438,336	1,242,688	4,162,657	3,427,997
INTEREST INCOME	15,726	8,522	36,417	13,131
INTEREST EXPENSE	(6,264)	(7,880)	(19,514)	(53,355)
OTHER INCOME	6,825	6,825	20,475	20,475
INCOME BEFORE INCOME TAX EXPENSE	2,454,623	1,250,155	4,200,035	3,408,248
INCOME TAX EXPENSE	814,000	228,000	1,020,000	490,000
NET INCOME	1,640,623	1,022,155	3,180,035	2,918,248
NET INCOME (LOSS) ATTRIBUTABLE TO NON CONTROLLING INTEREST	186,586	(1,394)	161,048	45,879
NET INCOME ATTRIBUTABLE TO NTIC	$ 1,454,037	$ 1,023,549	$ 3,018,987	$ 2,872,369
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in Shares)	0.33	0.24	0.69	0.67
Diluted (in Shares)	0.33	0.23	0.68	0.66
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in Dollars per share)	$ 4,399,290	$ 4,343,601	$ 4,379,175	$ 4,303,892
Diluted (in Dollars per share)	$ 4,461,044	$ 4,427,097	$ 4,448,472	$ 4,378,242