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Business Segment Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 03, 2015 USD ($) | Sep. 27, 2014 USD ($) | Oct. 03, 2015 USD ($) Segment | Sep. 27, 2014 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of reportable segments | Segment |  |  | 2 |
Revenues: |  |  |  |
Revenues | $ 91,929 | $ 98,719 | $ 282,507 | $ 296,921
Income from Continuing Operations Before Provision for Income Taxes: |  |  |  |
Total operating income | 12,681 | 10,151 | 35,695 | 29,808
Interest expense, net | (185) | (168) | (551) | (420)
Income from Continuing Operations Before Provision for Income Taxes | 12,496 | 9,983 | 35,144 | 29,388
Capital Expenditures: |  |  |  |
Capital expenditures | 1,417 | 1,703 | 4,068 | 3,145
Fiber-Based Products [Member] |  |  |  |
Revenues: |  |  |  |
Revenues | 2,021 | 1,870 | 8,528 | 8,803
Operating Segment [Member] | Papermaking Systems [Member] |  |  |  |
Revenues: |  |  |  |
Revenues | 80,789 | 88,369 | 248,069 | 258,528
Income from Continuing Operations Before Provision for Income Taxes: |  |  |  |
Total operating income | 14,246 | 13,006 | 41,559 | 36,219
Capital Expenditures: |  |  |  |
Capital expenditures | 1,258 | 1,325 | 3,412 | 2,614
Operating Segment [Member] | Wood Processing Systems [Member] |  |  |  |
Revenues: |  |  |  |
Revenues | 9,119 | 8,480 | 25,910 | 29,590
Income from Continuing Operations Before Provision for Income Taxes: |  |  |  |
Total operating income | 2,724 | 1,648 | 7,512 | 4,497
Corporate and Fiber-Based Products [Member] |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes: |  |  |  |
Total operating income | (4,289) | (4,503) | (13,376) | (10,908)
Other [Member] |  |  |  |
Capital Expenditures: |  |  |  |
Capital expenditures | $ 159 | $ 378 | $ 656 | $ 531

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