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v3.23.3

Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2023 | Sep. 30, 2022 | Sep. 29, 2023 | Sep. 30, 2022
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 133,336 | $ 127,179 | $ 413,866 | $ 385,938
Operating Income | 33,933 | 36,813 | 92,928 | 118,807
Capital Expenditures | 1,814 | 2,090 | 17,242 | 9,541
Depreciation and Amortization | 2,361 | 1,723 | 6,535 | 5,224
Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | 46,209 | 45,763 | 143,614 | 138,966
Capital Expenditures | 566 | 918 | 3,349 | 3,154
Depreciation and Amortization | 1,803 | 1,149 | 4,583 | 3,425
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | (12,276) | (8,950) | (50,686) | (20,159)
Capital Expenditures | 1,248 | 1,172 | 13,893 | 6,387
Depreciation and Amortization | 558 | 574 | 1,952 | 1,799
Engineering and Other Scientific | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 110,857 | 107,403 | 344,552 | 321,168
Operating Income | 38,734 | 39,385 | 121,064 | 117,907
Capital Expenditures | 541 | 870 | 3,210 | 3,050
Depreciation and Amortization | 1,750 | 1,108 | 4,428 | 3,301
Environmental and Health | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 22,479 | 19,776 | 69,314 | 64,770
Operating Income | 7,475 | 6,378 | 22,550 | 21,059
Capital Expenditures | 25 | 48 | 139 | 104
Depreciation and Amortization | $ 53 | $ 41 | $ 155 | $ 124

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