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Nature of Operations and Summary of Significant Accounting Policies - Goodwill (Details) $ in Thousands | 9 Months Ended
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Sep. 29, 2018 USD ($)
Goodwill [Roll Forward] |
Gross Balance, Beginning Balance | $ 353,510
Accumulated impairment losses | (85,509)
Net Balance, Beginning Balance | 268,001
Acquisitions | (92)
Currency translation | (5,828)
Total 2018 adjustments | (5,920)
Gross Balance, Ending Balance | 347,590
Accumulated impairment losses | (85,509)
Net Balance, Ending Balance | 262,081
Operating Segment [Member] | Papermaking Systems [Member] |
Goodwill [Roll Forward] |
Gross Balance, Beginning Balance | 247,014
Accumulated impairment losses | (85,509)
Net Balance, Beginning Balance | 161,505
Acquisitions | (17)
Currency translation | (3,552)
Total 2018 adjustments | (3,569)
Gross Balance, Ending Balance | 243,445
Accumulated impairment losses | (85,509)
Net Balance, Ending Balance | 157,936
Operating Segment [Member] | Wood Processing Systems [Member] |
Goodwill [Roll Forward] |
Gross Balance, Beginning Balance | 106,496
Accumulated impairment losses | 0
Net Balance, Beginning Balance | 106,496
Acquisitions | (75)
Currency translation | (2,276)
Total 2018 adjustments | (2,351)
Gross Balance, Ending Balance | 104,145
Accumulated impairment losses | 0
Net Balance, Ending Balance | $ 104,145

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