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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2022
Revenue From Contract With Customer [Abstract] |
Disaggregation of Revenue | Disaggregation of Revenue
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  | Percent |
Client Markets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy, environment, and infrastructure |  | $ | 160,401 |  |  |  | 38 | % |  | $ | 167,309 |  |  |  | 43 | % |  | $ | 316,444 |  |  |  | 38 | % |  | $ | 330,533 |  |  | 43 | %
Health, education, and social programs |  |  | 208,953 |  |  |  | 49 | % |  |  | 167,640 |  |  |  | 43 | % |  |  | 414,750 |  |  |  | 50 | % |  |  | 325,906 |  |  | 42 | %
Safety and security |  |  | 33,409 |  |  |  | 8 | % |  |  | 29,618 |  |  |  | 7 | % |  |  | 62,809 |  |  |  | 7 | % |  |  | 60,816 |  |  | 8 | %
Consumer and financial |  |  | 20,347 |  |  |  | 5 | % |  |  | 27,958 |  |  |  | 7 | % |  |  | 42,575 |  |  |  | 5 | % |  |  | 53,748 |  |  | 7 | %
Total |  | $ | 423,110 |  |  |  | 100 | % |  | $ | 392,525 |  |  |  | 100 | % |  | $ | 836,578 |  |  |  | 100 | % |  | $ | 771,003 |  |  | 100 | %
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  | Percent |
Client Type: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. federal government |  | $ | 225,229 |  |  |  | 53 | % |  | $ | 182,241 |  |  |  | 46 | % |  | $ | 444,221 |  |  |  | 53 | % |  | $ | 358,225 |  |  | 46 | %
U.S. state and local government |  |  | 64,056 |  |  |  | 15 | % |  |  | 58,487 |  |  |  | 15 | % |  |  | 130,165 |  |  |  | 16 | % |  |  | 115,637 |  |  | 15 | %
International government |  |  | 27,144 |  |  |  | 7 | % |  |  | 37,148 |  |  |  | 10 | % |  |  | 53,863 |  |  |  | 6 | % |  |  | 73,894 |  |  | 10 | %
Total Government |  |  | 316,429 |  |  |  | 75 | % |  |  | 277,876 |  |  |  | 71 | % |  |  | 628,249 |  |  |  | 75 | % |  |  | 547,756 |  |  | 71 | %
Commercial |  |  | 106,681 |  |  |  | 25 | % |  |  | 114,649 |  |  |  | 29 | % |  |  | 208,329 |  |  |  | 25 | % |  |  | 223,247 |  |  | 29 | %
Total |  | $ | 423,110 |  |  |  | 100 | % |  | $ | 392,525 |  |  |  | 100 | % |  | $ | 836,578 |  |  |  | 100 | % |  | $ | 771,003 |  |  | 100 | %
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  |  | Percent |  |  | Dollars |  | Percent |
Contract Mix: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Time-and-materials |  | $ | 169,980 |  |  |  | 40 | % |  | $ | 162,249 |  |  |  | 41 | % |  | $ | 334,821 |  |  |  | 40 | % |  | $ | 322,085 |  |  | 42 | %
Fixed price |  |  | 185,823 |  |  |  | 44 | % |  |  | 160,288 |  |  |  | 41 | % |  |  | 369,962 |  |  |  | 44 | % |  |  | 307,757 |  |  | 40 | %
Cost-based |  |  | 67,307 |  |  |  | 16 | % |  |  | 69,988 |  |  |  | 18 | % |  |  | 131,795 |  |  |  | 16 | % |  |  | 141,161 |  |  | 18 | %
Total |  | $ | 423,110 |  |  |  | 100 | % |  | $ | 392,525 |  |  |  | 100 | % |  | $ | 836,578 |  |  |  | 100 | % |  | $ | 771,003 |  |  | 100 | %
Schedule of Contract Balances and Changes in Contract Balances | Contract Balances: Contract assets consist primarily of unbilled amounts resulting from long-term contracts when revenue recognized exceeds the amount billed often due to billing schedule timing. Contract liabilities result from advance payments received on a contract or from billings in excess of revenue recognized on long-term contracts due to billing schedule timing. The following table summarizes the contract balances as of June 30, 2022 and December 31, 2021:
|  | June 30, 2022 |  |  | December 31, 2021 |  |  | $ Change |  |  | % Change |
Contract assets |  | $ | 190,506 |  |  | $ | 137,867 |  |  | $ | 52,639 |  |  |  | 38.2 | %
Contract liabilities |  |  | (24,612 | ) |  |  | (39,665 | ) |  |  | 15,053 |  |  |  | (38.0 | %)
Net contract assets (liabilities) |  | $ | 165,894 |  |  | $ | 98,202 |  |  | $ | 67,692 |  |  |  | 68.9 | %

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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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 https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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