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Nature of Operations and Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017
Goodwill [Roll Forward] |  |
Gross Balance, Beginning Balance | $ 353,510 | $ 236,964
Accumulated impairment losses | (85,509) | (85,509)
Net Balance, Beginning Balance | 268,001 | 151,455
Increase Due to Acquisition | (92) | 101,881
Currency translation | (9,735) | 14,665
Goodwill period adjustments | (9,827) | 116,546
Gross Balance, Ending Balance | 343,683 | 353,510
Accumulated impairment losses | (85,509) | (85,509)
Net Balance, Ending Balance | 258,174 | 268,001
Stock-Preparation |  |
Goodwill [Roll Forward] |  |
Net Balance, Beginning Balance | 60,275 |
Net Balance, Ending Balance | 58,142 | 60,275
Doctoring, Cleaning, & Filtration |  |
Goodwill [Roll Forward] |  |
Net Balance, Beginning Balance | 35,941 |
Net Balance, Ending Balance | 34,209 | 35,941
Fluid-Handling |  |
Goodwill [Roll Forward] |  |
Net Balance, Beginning Balance | 65,289 |
Net Balance, Ending Balance | 64,052 | 65,289
Operating Segments | Papermaking Systems |  |
Goodwill [Roll Forward] |  |
Gross Balance, Beginning Balance | 247,014 | 219,699
Accumulated impairment losses | (85,509) | (85,509)
Net Balance, Beginning Balance | 161,505 | 134,190
Increase Due to Acquisition | (17) | 16,373
Currency translation | (5,085) | 10,942
Goodwill period adjustments | (5,102) | 27,315
Gross Balance, Ending Balance | 241,912 | 247,014
Accumulated impairment losses | (85,509) | (85,509)
Net Balance, Ending Balance | 156,403 | 161,505
Operating Segments | Wood Processing Systems |  |
Goodwill [Roll Forward] |  |
Gross Balance, Beginning Balance | 106,496 | 17,265
Accumulated impairment losses | 0 | 0
Net Balance, Beginning Balance | 106,496 | 17,265
Increase Due to Acquisition | (75) | 85,508
Currency translation | (4,650) | 3,723
Goodwill period adjustments | (4,725) | 89,231
Gross Balance, Ending Balance | 101,771 | 106,496
Accumulated impairment losses | 0 | 0
Net Balance, Ending Balance | $ 101,771 | $ 106,496

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