Taxes on Income (Reconciliation Of Liability For Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of the beginning and ending amount of the liability for unrecognized tax benefits [Roll Forward]
Balance at beginning of year	$ 1,532	$ 2,088	$ 2,290
Additions based on tax positions related to the current year	165	602	279
Additions for tax positions of prior years	53	402	84
Reductions for tax positions of prior years	(502)	(738)	(443)
Settlements	(203)	(822)	(122)
Balance at end of year	$ 1,045	$ 1,532	$ 2,088