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Uncompleted Contracts (Tables)
6 Months Ended
Dec. 31, 2016
Disclosure Customer Contracts Additional Information [Abstract]  
Gross and Net Amount of Uncompleted Contracts
Gross and net amounts on uncompleted contracts are as follows: 
 
December 31,
2016
 
June 30,
2016
 
(in thousands)
Costs incurred and estimated earnings recognized on uncompleted contracts
$
1,983,345

 
$
1,875,014

Billings on uncompleted contracts
1,977,907

 
1,829,340

 
$
5,438

 
$
45,674

Shown in balance sheet as:
 
 
 
Costs and estimated earnings in excess of billings on uncompleted contracts
$
80,296

 
$
104,001

Billings on uncompleted contracts in excess of costs and estimated earnings
74,858

 
58,327

 
$
5,438

 
$
45,674