Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Condensed Consolidated Statements of Income
Net sales	$ 56,828,000	$ 52,559,000	$ 112,868,000	$ 103,345,000
Cost of sales	41,029,000	38,047,000	81,173,000	74,724,000
Gross margin	15,799,000	14,512,000	31,695,000	28,621,000
Operating expenses:
Selling, general and administrative expenses	12,673,000	11,720,000	25,275,000	23,210,000
Income from operations	3,126,000	2,792,000	6,420,000	5,411,000
Other income (expense):
Net gain (loss) on trading securities	471,000	(126,000)	391,000	102,000
Loss on sale of property			(102,000)
Interest and other (expense)	(65,000)	(125,000)	(184,000)	(202,000)
Other income(expense), net	406,000	(251,000)	105,000	(100,000)
Income before income taxes	3,532,000	2,541,000	6,525,000	5,311,000
Provision for income taxes	934,000	580,000	2,010,000	1,425,000
Net income	2,598,000	1,961,000	4,515,000	3,886,000
Cumulative preferred stock dividend	(19,000)	(19,000)	(38,000)	(38,000)
Net income attributable to common shareholders	$ 2,579,000	$ 1,942,000	$ 4,477,000	$ 3,848,000
Basic and diluted earnings per common share:	$ 0.53	$ 0.40	$ 0.92	$ 0.79
Basic and diluted weighted average common shares outstanding	4,861,590	4,861,590	4,861,590	4,861,590