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Costs and Estimated Earnings on Uncompleted Contracts (Details) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Costs and estimated earnings on uncompleted contracts |  |  |
Costs incurred on uncompleted contracts | $ 323,411,000 | $ 316,722,000 |
Provision for loss on uncompleted contracts |  |  |
Estimated income | 34,697,000 | 40,488,000 |
Cost on uncompleted contracts, net | 358,108,000 | 357,210,000 |
Less: billings to date | (371,665,000) | (372,339,000) |
Cost in excess of billing on uncompleted contracts, net | $ (13,557,000) | (15,129,000) |
Successor [Member] |  |  |
Costs and estimated earnings on uncompleted contracts |  |  |
Costs incurred on uncompleted contracts |  | 316,722 |
Provision for loss on uncompleted contracts |  |  |
Estimated income |  | 40,488 |
Cost on uncompleted contracts, net |  | 357,210 |
Less: billings to date |  | (372,339) |
Cost in excess of billing on uncompleted contracts, net |  | $ (15,129) |
Predecessor [Member] |  |  |
Costs and estimated earnings on uncompleted contracts |  |  |
Costs incurred on uncompleted contracts |  |  | $ 18,363
Provision for loss on uncompleted contracts |  |  |
Estimated income |  |  | 6,786
Cost on uncompleted contracts, net |  |  | 25,149
Less: billings to date |  |  | (53,173)
Cost in excess of billing on uncompleted contracts, net |  |  | $ (28,024)

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