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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information [Text Block] | ## 16. Quarterly Financial Data (Unaudited) The following table presents the unaudited consolidated operating results by quarter for the years ended December 31, 2014 and 2013:
|  | For the Three Months Ended
(in thousands, except per share data) |  | March 31, |  | June 30, |  | September 30, |  | December 31,
2014: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 215,638 |  |  | $ | 228,877 |  |  | $ | 248,473 |  |  | $ | 250,979 |
Gross profit |  |  | 27,080 |  |  |  | 30,528 |  |  |  | 32,724 |  |  |  | 42,082 |
Net income |  |  | 6,272 |  |  |  | 7,741 |  |  |  | 8,404 |  |  |  | 14,127 |
Basic earnings per share |  | $ | 0.30 |  |  | $ | 0.36 |  |  | $ | 0.40 |  |  | $ | 0.68 |
Diluted earnings per share |  | $ | 0.29 |  |  | $ | 0.36 |  |  | $ | 0.39 |  |  | $ | 0.66 |
2013: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 201,342 |  |  | $ | 213,916 |  |  | $ | 232,890 |  |  | $ | 254,581 |
Gross profit |  |  | 27,303 |  |  |  | 31,253 |  |  |  | 32,483 |  |  |  | 33,838 |
Net income |  |  | 6,960 |  |  |  | 9,462 |  |  |  | 8,315 |  |  |  | 10,022 |
Basic earnings per share |  | $ | 0.33 |  |  | $ | 0.45 |  |  | $ | 0.39 |  |  | $ | 0.47 |
Diluted earnings per share |  | $ | 0.32 |  |  | $ | 0.44 |  |  | $ | 0.38 |  |  | $ | 0.46 |
Earnings per share amounts for each quarter are required to be computed independently using the weighted average number of shares outstanding during the period. As a result, the sum of the individual quarterly earnings per share amounts may not agree to the earnings per share calculated for the year. Gross profit was higher in the fourth quarter of 2014 due to higher levels of claim settlements and change orders.

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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