Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Jun. 30, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information

	First		Second		Third		Fourth
2018	Quarter		Quarter		Quarter		Quarter
Net sales	$	7,496,423	$	11,531,105	$	5,663,161	$	7,827,194
Gross profit		1,461,154		3,075,598		1,255,204		1,870,296
Net income		442,764		1,614,871		317,764		700,398
Net income per share -
Basic		0.19		0.69		0.14		0.30
Diluted		0.19		0.69		0.14		0.29
2017
Net sales	$	6,068,684	$	5,667,624	$	5,324,104	$	5,460,600
Gross profit		1,343,748		1,080,145		1,128,505		1,162,170
Net income		420,825		244,079		279,173		191,659
Net income per share -
Basic		0.18		0.11		0.12		0.08
Diluted		0.18		0.11		0.12		0.08