Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net sales	$ 19,611,297	$ 21,598,720	$ 55,529,230	$ 54,235,622
Cost of sales	11,674,047	12,258,523	32,940,446	30,938,180
Gross profit	7,937,250	9,340,197	22,588,784	23,297,442
Operating expenses
Selling, general and administrative	6,614,693	5,878,352	18,794,395	15,712,319
Income from operations	1,322,557	3,461,845	3,794,389	7,585,123
Interest income	73,759	41,608	186,378	114,316
Income before income taxes	1,396,316	3,503,453	3,980,767	7,699,439
Income tax expense	593,000	1,141,392	1,393,000	2,356,945
Net income	$ 803,316	$ 2,362,061	$ 2,587,767	$ 5,342,494
Net income per common share:
Basic (in dollars per share)	$ 0.06	$ 0.18	$ 0.19	$ 0.40
Diluted (in dollars per share)	$ 0.06	$ 0.17	$ 0.19	$ 0.39
Weighted average shares outstanding:
Basic (in shares)	13,522,755	13,397,509	13,559,704	13,331,632
Diluted (in shares)	13,598,582	13,806,928	13,730,945	13,654,476