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BALANCE SHEET DETAILS
 9 Months Ended
Apr. 30, 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:
 
Apr 30, 2013
 
Jul 31, 2012
Accounts receivable:
 
 
 
Billed
$
494,887

 
$
584,449

Unbilled
74,765

 
82,720

Total
569,652

 
667,169

Less: Allowances for doubtful accounts
(15,527
)
 
(11,733
)
 
$
554,125

 
$
655,436


Unbilled receivables principally relate to revenues accrued for long-term contracts recorded under the percentage-of-completion method of accounting.
 
Apr 30, 2013
 
Jul 31, 2012
Inventory:
 
 
 
Raw materials and components
$
97,400

 
$
86,659

Work-in-process
107,157

 
92,427

Finished goods
201,566

 
185,680

 
$
406,123

 
$
364,766


Property, plant and equipment:
 
 
 
Property, plant and equipment
$
1,643,581

 
$
1,608,718

Less: Accumulated depreciation and amortization
(886,242
)
 
(857,725
)
 
$
757,339

 
$
750,993