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Contracts in Process
 3 Months Ended
Mar. 31, 2017
Contractors [Abstract]  
Long-term Contracts or Programs Disclosure [Text Block]
4. Contracts in Process
 
The net asset position for contracts in process consisted of the following:
 
 
 
March 31,
 
December 31,
 
(In thousands)
 
2017
 
2016
 
 
 
 
 
 
 
Costs and estimated earnings on uncompleted contracts
 
$
1,643,901
 
$
2,194,695
 
Less: Billings to date
 
 
1,620,446
 
 
2,167,066
 
 
 
$
23,455
 
$
27,629
 
 
The net asset position for contracts in process included in the accompanying consolidated balance sheets was as follows:
 
 
 
March 31,
 
December 31,
 
(In thousands)
 
2017
 
2016
 
 
 
 
 
 
 
Costs and estimated earnings in excess of billings on uncompleted contracts
 
$
72,903
 
$
69,950
 
Billings in excess of costs and estimated earnings on uncompleted contracts
 
 
(49,448)
 
 
(42,321)
 
 
 
$
23,455
 
$
27,629