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Quarterly Data (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Data | Quarters (000’s omitted, except per share data):
2018 |  | First |  | Second |  | Third |  | Fourth |  | Total
Net sales |  | $ | 31,709 |  |  | $ | 39,751 |  |  | $ | 34,731 |  |  | $ | 31,130 |  |  | $ | 137,321 |
Cost of goods sold |  |  | 19,585 |  |  |  | 25,039 |  |  |  | 22,281 |  |  |  | 19,767 |  |  |  | 86,672 |
Gross profit |  |  | 12,124 |  |  |  | 14,712 |  |  |  | 12,450 |  |  |  | 11,363 |  |  |  | 50,649 |
Net income |  |  | 764 |  |  |  | 2,436 |  |  |  | 807 |  |  |  | 591 |  |  |  | 4,598 |
Basic earnings per share |  | $ | 0.23 |  |  | $ | 0.72 |  |  | $ | 0.24 |  |  | $ | 0.18 |  |  | $ | 1.36 |
Diluted earnings per share |  | $ | 0.21 |  |  | $ | 0.67 |  |  | $ | 0.23 |  |  | $ | 0.19 |  |  | $ | 1.30 |
Dividends per share |  | $ | 0.11 |  |  | $ | 0.11 |  |  | $ | 0.11 |  |  | $ | 0.12 |  |  | $ | 0.45 |
2017 |  | First |  | Second |  | Third |  | Fourth |  | Total
Net sales |  | $ | 27,745 |  |  | $ | 38,849 |  |  | $ | 33,785 |  |  | $ | 30,171 |  |  | $ | 130,550 |
Cost of goods sold |  |  | 17,181 |  |  |  | 24,366 |  |  |  | 21,559 |  |  |  | 19,545 |  |  |  | 82,651 |
Gross profit |  |  | 10,564 |  |  |  | 14,483 |  |  |  | 12,226 |  |  |  | 10,626 |  |  |  | 47,899 |
Net income |  |  | 659 |  |  |  | 2,846 |  |  |  | 1,202 |  |  |  | (655 | ) |  |  | 4,052 |
Basic earnings per share |  | $ | 0.20 |  |  | $ | 0.85 |  |  | $ | 0.36 |  |  | $ | (0.20 | ) |  | $ | 1.21 |
Diluted earnings per share |  | $ | 0.18 |  |  | $ | 0.75 |  |  | $ | 0.32 |  |  | $ | (0.16 | ) |  | $ | 1.09 |
Dividends per share |  | $ | 0.10 |  |  | $ | 0.11 |  |  | $ | 0.11 |  |  | $ | 0.11 |  |  | $ | 0.43 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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