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Condensed Consolidated Statements of Income (Unaudited) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Condensed Consolidated Statements of Income (Unaudited)        
Net sales $ 8,856,049 $ 8,386,756 $ 28,660,474 $ 27,305,591
Cost of goods sold 7,221,815 6,632,070 22,394,801 21,224,986
Gross profit 1,634,234 1,754,686 6,265,673 6,080,605
Selling and administrative expenses 1,308,884 1,278,646 4,185,571 4,205,493
Operating profit 325,350 476,040 2,080,102 1,875,112
Other income 38,399 24,795 109,527 68,000
Income before income taxes 363,749 500,835 2,189,629 1,943,112
Provision for income taxes 76,000 165,000 491,000 634,000
Net income $ 287,749 $ 335,835 $ 1,698,629 $ 1,309,112
Per share data, basic and diluted:        
Net income per share $ 0.30 $ 0.35 $ 1.76 $ 1.36
Average common shares outstanding 966,132 966,132 966,132 966,132
Cash dividends declared per share $ 0.21 $ 0.20 $ 0.93 $ 0.95