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Note 3 - Cost and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings [Table Text Block] |
|  | December 31, |
|  | 2016 |  |  | 2015 |
|  | (in thousands) |
Costs incurred on uncompleted contracts |  | $ | 238,050 |  |  | $ | 210,716 |
Estimated earnings |  |  | 7,247 |  |  |  | 31,921 |
|  |  | 245,297 |  |  |  | 242,637 |
Less billings to date |  |  | (203,672 | ) |  |  | (200,565 | )
|  | $ | 41,625 |  |  | $ | 42,072 |
Amounts are presented in the Consolidated Balance Sheets as follows: |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts |  | $ | 43,663 |  |  | $ | 42,592 |
Billings in excess of costs and estimated earnings on uncompleted contracts |  |  | (2,038 | ) |  |  | (520 | )
|  | $ | 41,625 |  |  | $ | 42,072 |

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- Definition Tabular disclosure of costs and estimated earnings in excess of billings on uncompleted contracts and billings in excess of costs and estimated earnings. + References No definition available. + Details
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Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration