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Earnings per Share | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per Share Basic and diluted earnings per share (EPS) are calculated as follows:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, 2017 |  | October 1, 2016 |  | September 30, 2017 |  | October 1, 2016
(In thousands, except per share amounts) |  |  |  |
Amounts Attributable to Kadant: |  |  |  |  |  |  |  |
Income from Continuing Operations |  | $ | 13,285 |  |  | $ | 9,154 |  |  | $ | 30,332 |  |  | $ | 24,341 |
Income from Discontinued Operation |  | — |  |  | 3 |  |  | — |  |  | 3 |
Net Income |  | $ | 13,285 |  |  | $ | 9,157 |  |  | $ | 30,332 |  |  | $ | 24,344 |
Basic Weighted Average Shares |  | 11,004 |  |  | 10,901 |  |  | 10,986 |  |  | 10,854 |
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan Shares |  | 340 |  |  | 288 |  |  | 296 |  |  | 266 |
Diluted Weighted Average Shares |  | 11,344 |  |  | 11,189 |  |  | 11,282 |  |  | 11,120 |
Basic Earnings per Share |  | $ | 1.21 |  |  | $ | 0.84 |  |  | $ | 2.76 |  |  | $ | 2.24 |
Diluted Earnings per Share |  | $ | 1.17 |  |  | $ | 0.82 |  |  | $ | 2.69 |  |  | $ | 2.19 |
Unvested restricted stock units (RSUs) equivalent to approximately 4,000 and 13,000 shares of common stock in the third quarter of 2017 and 2016, respectively, and 21,000 and 62,000 shares of common stock in the first nine months of 2017 and 2016, respectively, were not included in the computation of diluted EPS as the effect would have been antidilutive or, for unvested performance-based RSUs, the performance conditions had not been met as of the end of the reporting periods.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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