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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, 2013
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] |
|  | Three Months Ended March 31, |
|  |  | 2013 |  |  |  | 2012 |
Numerator: |  |  |  |  |  |  |  |
Net loss attributable to Sterling common stockholders |  | $ | (4,580 | ) |  | $ | (7,500 | )
Revaluation of noncontrolling interest obligations reflected in retained earnings, net of tax |  |  | (1,854 | ) |  |  | 301 |
|  | $ | (6,434 | ) |  | $ | (7,199 | )
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding — basic |  |  | 16,598 |  |  |  | 16,322 |
Shares for dilutive stock options and warrants |  |  | -- |  |  |  | -- |
Weighted average common shares outstanding and assumed conversions— diluted |  |  | 16,598 |  |  |  | 16,322 |
Basic loss per share attributable to Sterling common stockholders |  | $ | (0.39 | ) |  | $ | (0.44 | )
Diluted loss per share attributable to Sterling common stockholders |  | $ | (0.39 | ) |  | $ | (0.44 | )

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: 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 + Details
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