XML 104 R36.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Dividends and Earnings Per Share (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2013
Dividends and Earnings Per Share |
Schedule of computation of basic and diluted earnings per share |
|  | Three months ended June 30, |  | Six months ended June 30, |
|  | 2013 |  | 2012 |  | 2013 |  | 2012 |
Numerator: |  |  |  |  |  |  |  |  |
Net income attributable to Primoris |  | $ | 15,564 |  | $ | 11,733 |  | $ | 25,334 |  | $ | 22,219 |
Denominator (shares in thousands): |  |  |  |  |  |  |  |  |
Weighted average shares for computation of basic earnings per share |  | 51,562 |  | 51,435 |  | 51,510 |  | 51,386 |
Dilutive effect of shares issued to independent directors |  | — |  | — |  | 4 |  | — |
Dilutive effect of shares issued as part of Q3C acquisition |  | — |  | — |  | 1 |  | — |
Dilutive effect of unvested restricted stock units |  | 64 |  | — |  | 32 |  | — |
Weighted average shares for computation of diluted earnings per share |  | 51,626 |  | 51,435 |  | 51,547 |  | 51,386 |
Earnings per share: |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.30 |  | $ | 0.23 |  | $ | 0.49 |  | $ | 0.43 |
Diluted earnings per share |  | $ | 0.30 |  | $ | 0.23 |  | $ | 0.49 |  | $ | 0.43 |

X
- Details
Name: | prim_DividendsAndEarningsPerShareDisclosureAbstract
Namespace Prefix: | prim_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration