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Major Customer And Geographic Information (Schedule Of Major Customer Data) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Israeli Ministry Of Defense [Member]
Revenue, Major Customer [Line Items]
Percentage of total revenues	15.00%	23.00%	23.00%
U.S. Government [Member]
Revenue, Major Customer [Line Items]
Percentage of total revenues	8.00%	8.00%	7.00%

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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X

- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration