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v3.19.2

Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2019 | Jun. 29, 2018 | Jun. 28, 2019 | Jun. 29, 2018
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 106,506 | $ 95,621 | $ 205,537 | $ 192,078
Operating Income | 24,823 | 22,478 | 40,577 | 44,076
Capital Expenditures | 6,900 | 2,139 | 13,241 | 8,949
Depreciation and Amortization | 1,642 | 1,594 | 3,232 | 3,149
Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | 36,291 | 31,958 | 68,461 | 64,495
Capital Expenditures | 942 | 1,338 | 2,763 | 2,202
Depreciation and Amortization | 1,218 | 1,162 | 2,384 | 2,296
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | (11,468) | (9,480) | (27,884) | (20,419)
Capital Expenditures | 5,958 | 801 | 10,478 | 6,747
Depreciation and Amortization | 424 | 432 | 848 | 853
Engineering and Other Scientific | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 86,820 | 77,080 | 167,074 | 154,127
Operating Income | 29,252 | 25,802 | 55,226 | 51,715
Capital Expenditures | 929 | 1,291 | 2,707 | 2,104
Depreciation and Amortization | 1,170 | 1,121 | 2,291 | 2,216
Environmental and Health | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 19,686 | 18,541 | 38,463 | 37,951
Operating Income | 7,039 | 6,156 | 13,235 | 12,780
Capital Expenditures | 13 | 47 | 56 | 98
Depreciation and Amortization | $ 48 | $ 41 | $ 93 | $ 80

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