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Note 12 - Net Income (Loss) per Share Attributable to Sterling Common Stockholders (Tables) | 3 Months Ended
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Mar. 31, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2014 |  |  | 2013 |
Numerator: |  |  |  |  |  |
Net income (loss) attributable to Sterling common stockholders |  | $ | 205 |  |  | $ | (4,580 | )
Revaluation of noncontrolling interest obligations reflected in retained earnings, net of tax |  |  | - |  |  |  | (1,854 | )
|  | $ | 205 |  |  | $ | (6,434 | )
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding – basic |  |  | 16,668 |  |  |  | 16,598 |
Shares for dilutive stock options and warrants |  |  | 187 |  |  |  | - |
Weighted average common shares outstanding and assumed conversions – diluted |  |  | 16,855 |  |  |  | 16,598 |
Basic earnings (loss) per share attributable to Sterling common stockholders |  | $ | 0.01 |  |  | $ | (0.39 | )
Diluted earnings (loss) per share attributable to Sterling common stockholders |  | $ | 0.01 |  |  | $ | (0.39 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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