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Note 15 - Net Loss Per Share Attributable to Sterling Common Stockholders (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Years Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Numerator: |  |  |  |  |  |  |  |  |
Net loss attributable to Sterling common stockholders |  | $ | (9,781 | ) |  | $ | (73,929 | ) |  | $ | (297 | )
Revaluation of noncontrolling interest put/call liability reflected in additional paid in capital or retained earnings, net of tax |  |  | - |  |  |  | (7,686 | ) |  |  | (3,992 | )
|  | $ | (9,781 | ) |  | $ | (81,615 | ) |  | $ | (4,289 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding — basic |  |  | 18,063 |  |  |  | 16,635 |  |  |  | 16,421 |
Shares for dilutive stock options and warrants |  |  | - |  |  |  | - |  |  |  | - |
Weighted average common shares outstanding and assumed conversions— diluted |  |  | 18,063 |  |  |  | 16,635 |  |  |  | 16,421 |
Basic and diluted net loss per share attributable to Sterling common stockholders |  | $ | (0.54 | ) |  | $ | (4.91 | ) |  | $ | (0.26 | )

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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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