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Income Taxes (Details) - 6 months ended Jun. 30, 2015	Total
Income Taxes
Effective tax rate on income before provision for income taxes excluding income attributable to noncontrolling interests (as a percent)	39.00%
Effective tax rate for income attributable to Primoris (as a percent)	39.00%
U.S. federal statutory rate (as a percent)	35.00%
Minimum period of statute of limitations of state and foreign jurisdictions	3 years
Maximum period of statute of limitations of state and foreign jurisdictions	5 years

X

- Definition

Represents the ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations, excluding income attributable to noncontrolling interests.

+ References

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X

- Definition

Represents the maximum period of statute of limitations of state and foreign jurisdictions.

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Represents the minimum period of statute of limitations of state and foreign jurisdictions.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



-SubTopic 10



-Section 50



-Paragraph 13



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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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