Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Income
Net sales	$ 36,174,604	$ 37,135,207
Cost of goods sold	28,279,125	28,830,043
Gross profit	7,895,479	8,305,164
Selling and administrative expenses	5,408,281	5,439,555
Operating profit	2,487,198	2,865,609
Other income	44,443	41,280
Income before provision for income taxes	2,531,641	2,906,889
Provision for income taxes	844,000	955,000
Net income	$ 1,687,641	$ 1,951,889
Net income per share	$ 1.75	$ 2.02