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Revenue Recognition (Tables) | 9 Months Ended
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Sep. 27, 2019
Revenue Recognition [Abstract] |
Summary of Revenues | The Company recognized the following revenues from time and materials contracts:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 27, 2019 |  |  | September 28, 2018 |  |  | September 27, 2019 |  |  | September 28, 2018 |
Engineering & other scientific |  | $ | 68,859 |  |  | $ | 59,582 |  |  | $ | 205,999 |  |  | $ | 186,486 |
Environmental and health |  |  | 17,803 |  |  |  | 16,755 |  |  |  | 54,612 |  |  |  | 52,987 |
Total time and materials revenues |  |  | 86,662 |  |  |  | 76,337 |  |  |  | 260,611 |  |  |  | 239,473 |
Percent of total revenues |  |  | 85.3 | % |  |  | 80.1 | % |  |  | 84.9 | % |  |  | 83.3 | %
The Company recognized the following revenues from fixed price contracts:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 27, 2019 |  |  | September 28, 2018 |  |  | September 27, 2019 |  |  | September 28, 2018 |
Engineering & other scientific |  |  | 14,201 |  |  |  | 18,315 |  |  |  | 44,135 |  |  |  | 45,494 |
Environmental and health |  |  | 685 |  |  |  | 650 |  |  |  | 2,339 |  |  |  | 2,413 |
Total fixed price revenues |  |  | 14,886 |  |  |  | 18,965 |  |  |  | 46,474 |  |  |  | 47,907 |
Percent of total revenues |  |  | 14.7 | % |  |  | 19.9 | % |  |  | 15.1 | % |  |  | 16.7 | %

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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