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Contracts in Process | 12 Months Ended
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Dec. 31, 2015
Contractors [Abstract] |
Long-term Contracts or Programs Disclosure [Text Block] | ## 5. Contracts in Process The net asset position for contracts in process consisted of the following at December 31:
(in thousands) |  | 2015 |  | 2014
Costs and estimated earnings on uncompleted contracts |  | $ | 2,153,085 |  |  | $ | 1,746,507 |
Less: Billings to date |  |  | 2,142,213 |  |  |  | 1,740,019 |
|  | $ | 10,872 |  |  | $ | 6,488 |
The net asset position for contracts in process is included in the accompanying consolidated balance sheets as follows at December 31:
(in thousands) |  | 2015 |  | 2014
Costs and estimated earnings in excess of billings on uncompleted contracts |  | $ | 51,486 |  |  | $ | 44,609 |
Billings in excess of costs and estimated earnings on uncompleted contracts |  |  | (40,614 | ) |  |  | (38,121 | )
|  | $ | 10,872 |  |  | $ | 6,488 |

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