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Construction Joint Ventures (Tables) | 12 Months Ended
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Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract] |
Change in Non-controlling Interest | The following table summarizes the changes in the noncontrolling owners’ interests in subsidiaries and consolidated joint ventures for the years ended December 31, 2018, 2017 and 2016 (amounts in thousands):
| Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Balance, beginning of period | $ | 4,856 |  |  | $ | 656 |  |  | $ | 91 |
Net income attributable to noncontrolling interest included in equity | 4,353 |  |  | 4,200 |  |  | 1,826 |
Distributions to noncontrolling interest owners | (1,350 | ) |  | — |  |  | (1,079 | )
Balance, end of period | $ | 7,859 |  |  | $ | 4,856 |  |  | $ | 656 |
Condensed Balance Sheet | Combined financial amounts of joint ventures in which the Company has a noncontrolling interest and the Company’s share of such amounts which are included in the Company’s consolidated financial statements are shown below (amounts in thousands):
| As of December 31,
| 2018 |  | 2017
Total combined: |  |  |  |  |
Current assets | $ | 64,815 |  |  | $ | 64,574 |
Less current liabilities | $ | (74,543 | ) |  | (78,349 | )
Net liabilities | $ | (9,728 | ) |  | $ | (13,775 | )
Sterling’s receivables from and equity in construction joint ventures | $ | 10,720 |  |  | $ | 11,380 |
Condensed Income Statement |
| Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Revenues | $ | 193,677 |  |  | $ | 181,589 |  |  | $ | 156,202 |
Operating income | 8,819 |  |  | 9,069 |  |  | 6,005 |
Net income attributable to Sterling common stockholders | $ | 4,415 |  |  | $ | 4,531 |  |  | $ | 2,993 |
| Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Total combined: |  |  |  |  |
Revenues | $ | 115,441 |  |  | $ | 93,848 |  |  | $ | 62,440 |
Income before tax | 8,097 |  |  | 7,827 |  |  | 5,144 |
Sterling’s noncontrolling interest: |  |  |  |  |
Revenues | $ | 55,134 |  |  | $ | 44,948 |  |  | $ | 25,537 |
Income before tax | 4,104 |  |  | 3,847 |  |  | 1,980 |

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- Definition Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 3 -Paragraph i -Subsection 10 + Details
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- Definition Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 3 -Paragraph i -Subsection 10 + Details
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- Definition The tabular disclosure of the effects of any changes in a parent's ownership interest in a subsidiary on the equity attributable to the parent if the ownership interests in a subsidiary changes during the period. The changes represented by this element did not result in the deconsolidation of the subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591554-111686 + Details
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