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Costs and Estimated Earnings in Excess of Billings (Tables)
 12 Months Ended
Jul. 26, 2014
Contractors [Abstract]  
Costs and Estimated Earnings in Excess of Billings, Net
Costs and estimated earnings in excess of billings ("CIEB") includes revenue for services from contracts based both on the units-of-delivery and the cost-to-cost measures of the percentage of completion method. Contracts in progress are as follows:
 
July 26,
2014
 
July 27,
2013
 
(Dollars in thousands)
Costs incurred on contracts in progress
$
234,766

 
$
208,250

Estimated to date earnings
57,335

 
49,150

Total costs and estimated earnings
292,101

 
257,400

Less: billings to date
(75,414
)
 
(66,839
)
 
$
216,687

 
$
190,561

Included in the accompanying consolidated balance sheets under the captions:
 

 
 

Costs and estimated earnings in excess of billings
$
230,569

 
$
204,349

Billings in excess of costs and estimated earnings
(13,882
)
 
(13,788
)
 
$
216,687

 
$
190,561