Consolidated Statements of Operations - USD ($)	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
NET SALES:
Net sales, excluding joint ventures	$ 27,491,392	$ 23,601,514	$ 19,724,205
Net sales, to joint ventures	2,831,301	3,224,594	2,777,659
Total net sales	30,322,693	26,826,108	22,501,864
Cost of goods sold	20,555,932	17,803,153	15,473,212
Gross profit	9,766,761	9,022,955	7,028,652
JOINT VENTURE OPERATIONS:
Equity in income from joint ventures	5,936,565	5,920,603	5,237,711
Fees for services provided to joint ventures	5,715,491	8,142,863	7,352,980
Total joint venture operations	11,652,056	14,063,466	12,590,691
OPERATING EXPENSES:
Selling expenses	5,820,748	5,221,738	4,845,676
General and administrative expenses	6,531,576	5,393,531	4,605,979
Expenses incurred in support of joint ventures	1,867,570	1,408,014	1,387,197
Research and development expenses	4,047,279	4,368,752	3,815,515
Total operating expenses	18,267,173	16,392,035	14,654,367
OPERATING INCOME	3,151,644	6,694,386	4,964,976
INTEREST INCOME	34,835	11,617	34,614
INTEREST EXPENSE	(20,960)	(47,322)	(52,215)
OTHER INCOME	515	4,393	670,126
INCOME BEFORE INCOME TAX EXPENSE	3,166,034	6,663,074	5,617,501
INCOME TAX EXPENSE	648,674	1,124,662	864,000
NET INCOME	2,517,360	5,538,412	4,753,501
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	727,789	1,432,040	1,386,607
NET INCOME ATTRIBUTABLE TO NTIC	$ 1,789,571	$ 4,106,372	$ 3,366,894
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.40	$ 0.92	$ 0.76
Diluted (in dollars per share)	$ 0.38	$ 0.90	$ 0.75
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in shares)	4,521,788	4,454,836	4,421,636
Diluted (in shares)	4,649,060	4,579,498	4,475,895