Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net sales	$ 21,480,590	$ 19,611,297	$ 55,178,369	$ 55,529,230
Cost of sales	12,988,545	11,674,047	32,798,083	32,940,446
Gross profit	8,492,045	7,937,250	22,380,286	22,588,784
Operating expenses
Selling, general and administrative	6,087,362	6,614,693	19,856,922	18,794,395
Income from operations	2,404,683	1,322,557	2,523,364	3,794,389
Interest income	116,549	73,759	331,650	186,378
Income before income taxes	2,521,232	1,396,316	2,855,014	3,980,767
Income tax expense	766,000	593,000	462,000	1,393,000
Net income	$ 1,755,232	$ 803,316	$ 2,393,014	$ 2,587,767
Net income per common share:
Basic (in dollars per share)	$ 0.13	$ 0.06	$ 0.18	$ 0.19
Diluted (in dollars per share)	$ 0.13	$ 0.06	$ 0.18	$ 0.19
Weighted average shares outstanding:
Basic (in shares)	13,430,503	13,522,755	13,441,619	13,559,704
Diluted (in shares)	13,430,503	13,598,582	13,473,123	13,730,945