Income Taxes (Domestic And Foreign Components Of Income Before Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
United States	$ (10,117)	$ 6,252	$ 16,495
(Loss) income before provision for (benefit from) income taxes	(4,137)	10,717	19,150
Israel [Member]
Income Tax Contingency [Line Items]
Foreign	3,549	2,819	1,837
United Kingdom [Member]
Income Tax Contingency [Line Items]
Foreign	1,688	1,449	818
Netherlands [Member]
Income Tax Contingency [Line Items]
Foreign	1,044
Australia [Member]
Income Tax Contingency [Line Items]
Foreign	$ (301)	$ 197