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Note 5 - Construction Joint Ventures (Tables) | 6 Months Ended
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Jun. 30, 2017
Notes Tables |
Condensed Balance Sheet [Table Text Block] |
|  | June 30, 2017 |  | December 31, 2016
Total combined: |  |  |  |  |  |  |  |
Current assets |  | $ | 45,034 |  |  | $ | 32,592 |
Less current liabilities |  |  | (64,672 | ) |  |  | (57,598 | )
Net assets |  | $ | (19,638 | ) |  | $ | (25,006 | )
Backlog |  | $ | 75,670 |  |  | $ | 107,333 |
Sterling’s noncontrolling interest in backlog |  | $ | 38,751 |  |  | $ | 52,992 |
Sterling’s receivables from and equity in construction joint ventures |  | $ | 7,463 |  |  | $ | 7,130 |
Condensed Income Statement [Table Text Block] |
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
Total combined: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 18,897 |  |  | $ | 19,750 |  |  | $ | 33,507 |  |  | $ | 28,554 |
Income before tax |  |  | 1,497 |  |  |  | 1,379 |  |  |  | 2,670 |  |  |  | 1,913 |
Sterling’s noncontrolling interest: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 8,674 |  |  | $ | 7,684 |  |  | $ | 15,163 |  |  | $ | 11,464 |
Income before tax |  |  | 718 |  |  |  | 593 |  |  |  | 1,271 |  |  |  | 851 |

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