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Business Segment Information - Summary of Segment Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 26, 2020 USD ($) | Sep. 28, 2019 USD ($) | Sep. 26, 2020 USD ($) Segment | Sep. 28, 2019 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of reportable segments | Segment |  |  | 3 |
Revenue |  |  |  |
Revenues | $ 154,610 | $ 173,504 | $ 466,597 | $ 521,985
Income Before Provision for Income Taxes |  |  |  |
Total operating income | 21,335 | 24,553 | 59,111 | 66,270
Interest expense, net | (1,618) | (3,023) | (5,920) | (9,985)
Other expense, net | (32) | (98) | (95) | (296)
Income Before Provision for Income Taxes | 19,685 | 21,432 | 53,096 | 55,989
Capital Expenditures |  |  |  |
Capital expenditures | 1,822 | 2,093 | 5,419 | 6,236
Acquisition transaction costs |  |  | 485 | 843
Operating Segment | Flow Control |  |  |  |
Revenue |  |  |  |
Revenues | 56,815 | 62,375 | 165,329 | 188,792
Income Before Provision for Income Taxes |  |  |  |
Total operating income | 13,770 | 15,103 | 37,360 | 43,220
Capital Expenditures |  |  |  |
Capital expenditures | 509 | 636 | 1,667 | 1,814
Restructuring costs | 265 |  | 721 |
Operating Segment | Industrial Processing |  |  |  |
Revenue |  |  |  |
Revenues | 62,086 | 74,229 | 192,468 | 222,899
Income Before Provision for Income Taxes |  |  |  |
Total operating income | 12,072 | 13,107 | 32,147 | 38,830
Capital Expenditures |  |  |  |
Capital expenditures | 785 | 1,053 | 2,460 | 3,223
Restructuring costs | 205 |  | 205 |
Acquisition transaction costs | 161 |  | 596 |
Operating Segment | Material Handling Systems |  |  |  |
Revenue |  |  |  |
Revenues | 35,709 | 36,900 | 108,800 | 110,294
Income Before Provision for Income Taxes |  |  |  |
Total operating income | 2,614 | 3,525 | 10,341 | 5,515
Capital Expenditures |  |  |  |
Capital expenditures | 486 | 397 | 1,167 | 1,145
Acquisition transaction costs | 248 | 21 | 256 | 5,695
Corporate, Non-Segment |  |  |  |
Income Before Provision for Income Taxes |  |  |  |
Total operating income | (7,121) | (7,182) | (20,737) | (21,295)
Capital Expenditures |  |  |  |
Capital expenditures | $ 42 | $ 7 | $ 125 | $ 54

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