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Summary Of Major Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of Temporary Differences Using the Percentage-of-Completion Method
Revenue in Excess of Amounts Billed on uncompleted fixed-price contracts accounted for using the percentage-of-completion method is summarized as follows:
 
 
December 31,
(in thousands)
 
2016
 
2015
Revenue recognized
 
$
538,986

 
$
694,690

Less: Billings to customers
 
(488,814
)
 
(649,550
)
Revenue in excess of amounts billed
 
$
50,172

 
$
45,140


Billings in Excess of Revenue Recognized on uncompleted fixed-price contracts accounted for using the percentage-of-completion method are summarized as follows: 
 
 
December 31,
(in thousands)
 
2016
 
2015
Amounts billed to customers
 
$
178,914

 
$
302,904

Less: Revenue recognized
 
(81,800
)
 
(190,812
)
Billings in excess of revenue recognized
 
$
97,114

 
$
112,092
Schedule of Earnings Per Share, Basic and Diluted
Earnings per Share. For each year presented, the only difference between our annual calculated weighted average basic and diluted number of shares outstanding is the effect of outstanding restricted stock units.