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Variable Interest Entities - Consolidated Balance Sheet - Myers (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Current assets: |  |  |  |
Cash and cash equivalents | $ 66,541 | $ 42,785 | $ 43,021 | $ 4,426
Contracts receivable, including retainage | 149,052 | 84,132 |  |
Other current assets | 9,654 | 5,448 |  |
Total current assets | 279,793 | 175,908 |  |
Property and equipment, net | 59,464 | 68,127 |  |
Goodwill | 85,277 | 54,820 |  |
Total assets | 473,035 | 301,823 |  |
Current liabilities: |  |  |  |
Accounts payable | 100,565 | 67,097 |  |
Total current liabilities | 194,953 | 146,592 |  |
Variable Interest Entity, Primary Beneficiary |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents | 2,588 | 9,655 |  |
Contracts receivable, including retainage | 30,134 | 15,046 |  |
Other current assets | 13,936 | 10,208 |  |
Total current assets | 46,658 | 34,909 |  |
Property and equipment, net | 8,996 | 9,824 |  |
Goodwill | 1,501 | 1,501 |  |
Total assets | 57,155 | 46,234 |  |
Current liabilities: |  |  |  |
Accounts payable | 27,109 | 21,274 |  |
Other current liabilities | 14,667 | 8,782 |  |
Total current liabilities | 41,776 | 30,056 |  |
Long-term liabilities: |  |  |  |
Other long-term liabilities | 271 | 5,373 |  |
Total liabilities | $ 42,047 | $ 35,429 |  |

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