Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
NET SALES:
Net sales, excluding joint ventures	$ 12,044,513	$ 9,360,883	$ 34,479,773	$ 26,552,434
Net sales, to joint ventures	879,324	862,136	2,201,077	2,115,511
Total net sales	12,923,837	10,223,019	36,680,850	28,667,945
Cost of goods sold	8,592,366	6,774,001	24,493,672	19,256,953
Gross profit	4,331,471	3,449,018	12,187,178	9,410,992
JOINT VENTURE OPERATIONS:
Equity in income from joint ventures	2,246,066	1,686,016	5,793,391	4,343,159
Fees for services provided to joint ventures	1,508,500	1,442,048	4,624,532	3,941,667
Total joint venture operations	3,754,566	3,128,064	10,417,923	8,284,826
OPERATING EXPENSES:
Selling expenses	2,784,694	2,430,824	8,028,279	6,716,390
General and administrative expenses	1,987,785	1,682,669	6,012,746	5,996,977
Research and development expenses	860,347	733,651	2,581,824	2,118,210
Total operating expenses	5,632,826	4,847,144	16,622,849	14,831,577
OPERATING INCOME	2,453,211	1,729,938	5,982,252	2,864,241
INTEREST INCOME	35,630	10,996	84,569	19,075
INTEREST EXPENSE	(3,139)	(7,409)	(14,007)	(15,502)
INCOME BEFORE INCOME TAX EXPENSE	2,485,702	1,733,525	6,052,814	2,867,814
INCOME TAX EXPENSE	181,683	237,801	1,128,583	480,423
NET INCOME	2,304,019	1,495,724	4,924,231	2,387,391
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	161,267	143,308	365,006	350,370
NET INCOME ATTRIBUTABLE TO NTIC	$ 2,142,752	$ 1,352,416	$ 4,559,225	$ 2,037,021
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.47	$ 0.30	$ 1	$ 0.45
Diluted (in dollars per share)	$ 0.46	$ 0.30	$ 0.98	$ 0.45
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in shares)	4,539,353	4,526,771	4,538,838	4,528,523
Diluted (in shares)	4,707,032	4,591,527	4,663,847	4,571,395
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0	$ 0.30	$ 0