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Acquisition - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 30, 2019 | Mar. 31, 2018
Pro Forma Information |  |
Nonrecurring adjustments | $ 10,900 | $ 10,858
Syntron Material Handling Group, LLC |  |
Business Acquisition [Line Items] |  |
Revenues | 171,316 | 170,532
Net Income Attributable to Kadant | $ 14,112 | $ 8,475
Earnings per Share Attributable to Kadant: |  |
Basic (in dollars per share) | $ 1.27 | $ 0.77
Diluted (in dollars per share) | $ 1.24 | $ 0.75
Syntron Material Handling Group, LLC | Acquisition-related transaction costs |  |
Pro Forma Information |  |
Nonrecurring adjustments | $ (843) | $ 843
Syntron Material Handling Group, LLC | Inventory revalued |  |
Pro Forma Information |  |
Nonrecurring adjustments | (2,310) | 2,310
Syntron Material Handling Group, LLC | Intangible amortization related to acquired backlog |  |
Pro Forma Information |  |
Nonrecurring adjustments | $ (998) | $ 998

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