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v3.20.2

Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2020 | Jun. 28, 2019 | Jul. 03, 2020 | Jun. 28, 2019
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 92,045 | $ 106,506 | $ 197,998 | $ 205,537
Operating Income | 9,120 | 24,823 | 45,108 | 40,577
Capital Expenditures | 1,644 | 6,900 | 2,683 | 13,241
Depreciation and Amortization | 1,701 | 1,642 | 3,487 | 3,232
Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | 27,856 | 36,291 | 61,750 | 68,461
Capital Expenditures | 920 | 942 | 1,548 | 2,763
Depreciation and Amortization | 1,114 | 1,218 | 2,298 | 2,384
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | (18,736) | (11,468) | (16,642) | (27,884)
Capital Expenditures | 724 | 5,958 | 1,135 | 10,478
Depreciation and Amortization | 587 | 424 | 1,189 | 848
Engineering and Other Scientific | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 72,123 | 86,820 | 157,009 | 167,074
Operating Income | 20,807 | 29,252 | 47,448 | 55,226
Capital Expenditures | 901 | 929 | 1,467 | 2,707
Depreciation and Amortization | 1,068 | 1,170 | 2,205 | 2,291
Environmental and Health | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 19,922 | 19,686 | 40,989 | 38,463
Operating Income | 7,049 | 7,039 | 14,302 | 13,235
Capital Expenditures | 19 | 13 | 81 | 56
Depreciation and Amortization | $ 46 | $ 48 | $ 93 | $ 93

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