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BALANCE SHEET DETAILS
 3 Months Ended
Oct. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
BALANCE SHEET DETAILS
BALANCE SHEET DETAILS
The following tables provide details of selected balance sheet items:
 
Oct 31, 2013
 
Jul 31, 2013
Accounts receivable:
 
 
 
Billed
$
469,075

 
$
508,448

Unbilled
78,508

 
72,787

Total
547,583

 
581,235

Less: Allowances for doubtful accounts
(14,779
)
 
(14,900
)
 
$
532,804

 
$
566,335


Unbilled receivables principally relate to revenues accrued for long-term contracts recorded under the percentage-of-completion method of accounting.
 
Oct 31, 2013
 
Jul 31, 2013
Inventory:
 
 
 
Raw materials and components
$
107,496

 
$
94,837

Work-in-process
107,579

 
94,998

Finished goods
193,086

 
191,212

 
$
408,161

 
$
381,047


Property, plant and equipment:
 
 
 
Property, plant and equipment
$
1,707,055

 
$
1,650,274

Less: Accumulated depreciation and amortization
(910,109
)
 
(875,326
)
 
$
796,946

 
$
774,948