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Note 10 - Variable Interest Entities (Details) - Summary Financial Information of Myers Included in the Condensed Consolidated Balance Sheets - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Current assets: |  |  |  |
Cash and cash equivalents | $ 14,336 | $ 22,843 | $ 14,281 | $ 1,872
Contracts receivable, including retainage | 100,563 | 78,896 |  |
Other current assets | 5,652 | 5,278 |  |
Total current assets | 162,658 | 156,974 |  |
Property and equipment, net | 80,813 | 87,098 |  |
Goodwill | 54,820 | 54,820 |  |
Total assets | 307,318 | 306,451 |  |
Current liabilities: |  |  |  |
Accounts payable | 75,760 | 66,792 |  |
Total current liabilities | 131,521 | 104,650 |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents |  | 148 |  |
Contracts receivable, including retainage | 24,321 | 21,327 |  |
Other current assets | 11,779 | 7,656 |  |
Total current assets | 36,100 | 29,131 |  |
Property and equipment, net | 9,957 | 9,303 |  |
Goodwill | 1,501 | 1,501 |  |
Total assets | 47,558 | 39,935 |  |
Current liabilities: |  |  |  |
Accounts payable | 23,938 | 15,795 |  |
Other current liabilities | 9,435 | 9,000 |  |
Total current liabilities | 33,373 | 24,795 |  |
Long-term liabilities: |  |  |  |
Other long-term liabilities | 295 | 16 |  |
Total liabilities | $ 33,668 | $ 24,811 |  |

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