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Quarterly Data (Tables) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Data |
Quarters (000's omitted, except per share data) |  |  |  |  |  |  |  |  |  |
2016 |  | First |  | Second |  | Third |  | Fourth |  | Total
Net sales |  | $ | 25,288 |  |  | $ | 40,997 |  |  | $ | 31,913 |  |  | $ | 26,377 |  |  | $ | 124,574 |
Cost of goods sold |  |  | 16,103 |  |  |  | 26,302 |  |  |  | 20,050 |  |  |  | 16,564 |  |  |  | 79,019 |
Net income |  |  | 565 |  |  |  | 3,267 |  |  |  | 1,473 |  |  |  | 545 |  |  |  | 5,851 |
Basic earnings per share |  | $ | 0.17 |  |  | $ | 0.98 |  |  | $ | 0.44 |  |  | $ | 0.16 |  |  | $ | 1.76 |
Diluted earnings per share |  | $ | 0.16 |  |  | $ | 0.91 |  |  | $ | 0.40 |  |  | $ | 0.15 |  |  | $ | 1.64 |
Dividends per share |  | $ | 0.10 |  |  | $ | 0.10 |  |  | $ | 0.10 |  |  | $ | 0.10 |  |  | $ | 0.40 |
2015 |  |  | First |  |  |  | Second |  |  |  | Third |  |  |  | Fourth |  |  |  | Total |
Net sales |  | $ | 22,837 |  |  | $ | 33,954 |  |  | $ | 29,903 |  |  | $ | 23,118 |  |  | $ | 109,812 |
Cost of goods sold |  |  | 14,402 |  |  |  | 21,419 |  |  |  | 19,578 |  |  |  | 14,852 |  |  |  | 70,251 |
Net income |  |  | 436 |  |  |  | 2,710 |  |  |  | 1,208 |  |  |  | 440 |  |  |  | 4,794 |
Basic earnings per share |  | $ | 0.13 |  |  | $ | 0.82 |  |  | $ | 0.36 |  |  | $ | 0.12 |  |  | $ | 1.44 |
Diluted earnings per share |  | $ | 0.12 |  |  | $ | 0.74 |  |  | $ | 0.33 |  |  | $ | 0.11 |  |  | $ | 1.30 |
Dividends per share |  | $ | 0.09 |  |  | $ | 0.09 |  |  | $ | 0.09 |  |  | $ | 0.10 |  |  | $ | 0.37 |

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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