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Dividends and Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |  |  |  |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 15, 2015 | May. 01, 2015 | Apr. 15, 2015 | Feb. 24, 2015 | Jan. 15, 2015 | Nov. 04, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Dividends and Earnings Per Share |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) |  | $ 0.055 |  | $ 0.04 |  | $ 0.04 |  |  |  |
Total dividend paid | $ 2,841 |  | $ 2,063 |  | $ 2,062 |  |  |  | $ 4,124 | $ 3,612
Numerator: |  |  |  |  |  |  |  |  |  |
Net income attributable to Primoris |  |  |  |  |  |  | $ 3,638 | $ 16,003 | $ 5,310 | $ 26,836
Denominator: |  |  |  |  |  |  |  |  |  |
Weighted average shares for computation of basic earnings per share |  |  |  |  |  |  | 51,666 | 51,655 | 51,619 | 51,631
Dilutive effect of shares issued to independent directors |  |  |  |  |  |  |  |  | 2 | 2
Dilutive effect of unvested restricted stock units |  |  |  |  |  |  | 149 | 149 | 149 | 126
Weighted average shares for computation of diluted earnings per share |  |  |  |  |  |  | 51,815 | 51,804 | 51,770 | 51,759
Earnings per share: |  |  |  |  |  |  |  |  |  |
Basic earnings per share (in dollars per share) |  |  |  |  |  |  | $ 0.07 | $ 0.31 | $ 0.10 | $ 0.52
Diluted earnings per share (in dollars per share) |  |  |  |  |  |  | $ 0.07 | $ 0.31 | $ 0.10 | $ 0.52

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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