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Note 11 - Net (Loss) Income per Share Attributable to Sterling Common Stockholders | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] |
| 11. | Net (Loss) Income per Share Attributable to Sterling Common Stockholders
Basic net (loss) income per share attributable to Sterling common stockholders is computed by dividing net (loss) income attributable to Sterling common stockholders by the weighted average number of common shares outstanding during the period. Diluted net (loss) income per common share attributable to Sterling common stockholders is the same as basic net (loss) income per share attributable to Sterling common stockholders but includes dilutive unvested stock and stock options using the treasury stock method. The following table reconciles the numerators and denominators of the basic and diluted per common share computations for net (loss) income attributable to Sterling common stockholders (amounts in thousands, except per share data):
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Sterling common stockholders |  | $ | (2,542 | ) |  | $ | 1,200 |  |  | $ | (19,534 | ) |  | $ | 1,406 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding — basic |  |  | 19,270 |  |  |  | 17,942 |  |  |  | 19,041 |  |  |  | 17,309 |
Shares for dilutive unvested stock and stock options |  |  | - |  |  |  | 168 |  |  |  | - |  |  |  | 155 |
Weighted average common shares outstanding and incremental shares assumed repurchased— diluted |  |  | 19,270 |  |  |  | 18,110 |  |  |  | 19,041 |  |  |  | 17,464 |
Basic and diluted (loss) earnings per share attributable to Sterling common stockholders |  | $ | (0.13 | ) |  | $ | 0.07 |  |  | $ | (1.03 | ) |  | $ | 0.08 |
In accordance with the treasury stock method, no shares of unvested common stock and stock options were excluded from the diluted weighted average common shares outstanding for the three months ended June 30, 2015, as the assumed proceeds related to these shares would purchase more shares than the unvested shares outstanding resulting in anti-dilution. In addition, and also in accordance with the treasury stock method, approximately 0.1 million shares were excluded from the diluted weighted average common shares outstanding for the six months ended June 30, 2015, as the Company incurred a loss during this period and the impact of such shares would have been antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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