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v3.3.1.900

Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 01, 2016 | Oct. 02, 2015 | Jul. 03, 2015 | Apr. 03, 2015 | Jan. 02, 2015 | Oct. 03, 2014 | Jul. 04, 2014 | Apr. 04, 2014 | Jan. 01, 2016 | Jan. 02, 2015 | Jan. 03, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 73,681 | $ 78,994 | $ 79,864 | $ 80,293 | $ 73,611 | $ 78,557 | $ 76,574 | $ 75,962 | $ 312,832 | [1] | $ 304,704 | [1] | $ 296,168 | [1]
Operating Income | $ 14,279 | $ 20,921 | $ 18,705 | $ 15,028 | $ 14,133 | $ 19,238 | $ 16,084 | $ 14,094 | 68,933 |  | 63,549 |  | 55,946 |
Capital Expenditures |  |  |  |  |  |  |  |  | 5,379 |  | 4,947 |  | 6,226 |
Depreciation and Amortization |  |  |  |  |  |  |  |  | 5,479 |  | 5,404 |  | 4,951 |
Engineering and Other Scientific |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 237,959 |  | 223,384 |  | 215,972 |
Operating Income |  |  |  |  |  |  |  |  | 76,817 |  | 72,207 |  | 67,070 |
Capital Expenditures |  |  |  |  |  |  |  |  | 3,197 |  | 3,719 |  | 5,180 |
Depreciation and Amortization |  |  |  |  |  |  |  |  | 3,919 |  | 3,637 |  | 3,097 |
Environmental and Health |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 74,873 |  | 81,320 |  | 80,196 |
Operating Income |  |  |  |  |  |  |  |  | 21,810 |  | 25,145 |  | 25,072 |
Capital Expenditures |  |  |  |  |  |  |  |  | 164 |  | 211 |  | 148 |
Depreciation and Amortization |  |  |  |  |  |  |  |  | 182 |  | 197 |  | 299 |
Operating segments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income |  |  |  |  |  |  |  |  | 98,627 |  | 97,352 |  | 92,142 |
Capital Expenditures |  |  |  |  |  |  |  |  | 3,361 |  | 3,930 |  | 5,328 |
Depreciation and Amortization |  |  |  |  |  |  |  |  | 4,101 |  | 3,834 |  | 3,396 |
Corporate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income |  |  |  |  |  |  |  |  | (29,694) |  | (33,803) |  | (36,196) |
Capital Expenditures |  |  |  |  |  |  |  |  | 2,018 |  | 1,017 |  | 898 |
Depreciation and Amortization |  |  |  |  |  |  |  |  | $ 1,378 |  | $ 1,570 |  | $ 1,555 |
[1] | Geographic revenues are allocated based on the location of the client.

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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