Note 7 - Investments in Joint Ventures (Tables)

6 Months Ended

Feb. 28, 2026

Notes Tables

Condensed Balance Sheet [Table Text Block]

		As of February 28, 2026
		Total				EXCOR				Acobal				Zerust OY				Other
Current assets		$	62,503,865			$	31,809,238			$	6,684,550			$	2,884,239			$	21,125,837
Total assets			72,326,199				38,912,946				7,596,463				3,151,560				22,665,230
Current liabilities			12,003,432				2,052,186				2,575,991				905,909				6,469,345
Non-current liabilities			336,458			—				—				—					336,458
Joint ventures’ equity			59,986,309				36,860,760				5,020,471				2,245,650				15,859,427
NTIC’s share of joint ventures’ equity			29,748,064				18,430,382				2,510,234				1,122,814				7,684,634
NTIC’s share of joint ventures’ undistributed earnings			28,803,395				17,610,532				2,900,410				1,405,155				6,887,298

		As of August 31, 2025
		Total				EXCOR				Acobal				Zerust OY				Other
Current assets		$	60,062,085			$	29,870,525			$	6,971,262			$	3,029,614			$	20,190,684
Total assets			69,815,251				36,941,008				7,900,298				3,313,909				21,660,036
Current liabilities			11,743,525				2,391,029				2,660,430				719,172				5,972,894
Noncurrent liabilities			336,557			—				—				—					336,557
Joint ventures’ equity			57,735,169				34,549,979				5,239,868				2,594,737				15,350,585
NTIC’s share of joint ventures’ equity			28,611,777				17,274,991				2,619,932				1,297,358				7,419,496
NTIC’s share of joint ventures’ undistributed earnings			27,667,432				17,244,086				2,619,932				1,277,358				6,526,056

Condensed Income Statement [Table Text Block]

		Three Months Ended February 28, 2026
		Total				EXCOR				Acobal				Zerust OY				Other
Net sales		$	23,483,578			$	8,336,442			$	3,255,573			$	1,330,157			$	10,561,406
Gross profit			10,401,649				4,565,626				1,311,235				807,480				3,717,307
Net income			2,216,229				910,462				621,935				228,395				455,437
NTIC’s share of equity in income from joint ventures			1,100,670				452,219				309,283				113,370				225,796
NTIC’s dividends received from joint ventures			1,184,193			—					747,477				436,716			—

		Six Months Ended February 28, 2026
		Total				EXCOR				Acobal				Zerust OY				Other
Net sales		$	48,015,009			$	17,102,159			$	6,857,925			$	2,730,272			$	21,324,653
Gross profit			21,084,388				9,138,346				2,711,994				1,666,838				7,567,210
Net income			4,660,463				1,946,732				1,230,612				507,537				975,582
NTIC’s share of equity in income from joint ventures			2,322,786				970,355				613,621				252,941				485,869
NTIC’s dividends received from joint ventures			1,402,525			—					747,477				436,716				218,332

		Three Months Ended February 28, 2025
		Total				EXCOR				All Other
Net sales		$	19,799,875			$	6,904,045			$	12,895,830
Gross profit			8,241,116				3,598,163				4,642,953
Net income			1,219,970				520,787				699,183
NTIC’s share of equity in income from joint ventures			620,730				268,251				352,479
NTIC’s dividends received from joint ventures			680,737				—				680,737

		Six Months Ended February 28, 2025
		Total				EXCOR				All Other
Net sales		$	43,636,885			$	15,642,859			$	27,994,026
Gross profit			18,556,399				8,355,849				10,200,550
Net income			3,479,157				1,768,287				1,710,870
NTIC’s share of equity in income from joint ventures			1,750,323				892,001				858,322
NTIC’s dividends received from joint ventures			680,737				–				680,737