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v3.22.2.2

Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Oct. 01, 2021 | Sep. 30, 2022 | Oct. 01, 2021
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 127,179 | $ 116,405 | $ 385,938 | $ 352,763
Operating Income | 36,813 | 32,119 | 118,807 | 85,549
Capital Expenditures | 2,090 | 1,398 | 9,541 | 5,203
Depreciation and Amortization | 1,723 | 1,645 | 5,224 | 4,943
Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | 45,763 | 42,527 | 138,966 | 129,911
Capital Expenditures | 918 | 620 | 3,154 | 2,117
Depreciation and Amortization | 1,149 | 1,138 | 3,425 | 3,215
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | (8,950) | (10,408) | (20,159) | (44,362)
Capital Expenditures | 1,172 | 778 | 6,387 | 3,086
Depreciation and Amortization | 574 | 507 | 1,799 | 1,728
Engineering and Other Scientific | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 107,403 | 97,100 | 321,168 | 288,848
Operating Income | 39,385 | 36,676 | 117,907 | 108,646
Capital Expenditures | 870 | 563 | 3,050 | 1,981
Depreciation and Amortization | 1,108 | 1,089 | 3,301 | 3,074
Environmental and Health | Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 19,776 | 19,305 | 64,770 | 63,915
Operating Income | 6,378 | 5,851 | 21,059 | 21,265
Capital Expenditures | 48 | 57 | 104 | 136
Depreciation and Amortization | $ 41 | $ 49 | $ 124 | $ 141

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