Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Condensed Consolidated Statements of Income
Net sales	$ 76,925,000	$ 66,587,000	$ 153,244,000	$ 130,409,000
Cost of sales	54,661,000	48,462,000	109,317,000	94,106,000
Gross margin	22,264,000	18,125,000	43,927,000	36,303,000
Operating expenses:
Selling, general and administrative expenses	15,606,000	13,439,000	31,291,000	22,334,000
Income from operations	6,658,000	4,686,000	12,636,000	13,969,000
Other income (expense):
Net gain (loss) on trading securities	179,000	(22,000)	621,000	(78,000)
Interest and other income (expense)	46,000	(53,000)	(2,000)	(105,000)
Other income (expense), net	225,000	(75,000)	619,000	(183,000)
Income before income taxes	6,883,000	4,611,000	13,255,000	13,786,000
Provision for income taxes	1,783,000	1,204,000	3,444,000	3,593,000
Net income	5,100,000	3,407,000	9,811,000	10,193,000
Cumulative preferred stock dividend	(19,000)	(19,000)	(38,000)	(38,000)
Net income available for common shareholders	$ 5,081,000	$ 3,388,000	$ 9,773,000	$ 10,155,000
Basic earnings per share	$ 1.05	$ 0.70	$ 2.01	$ 2.09
Diluted earnings per share	$ 1.05	$ 0.70	$ 2.01	$ 2.09
Basic weighted average common shares outstanding	4,861,590	4,861,590	4,861,590	4,861,590
Diluted weighted average common shares outstanding	4,901,590	4,901,590	4,901,590	4,901,590