Long Term Liabilities (Schedule of Long Term Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Long Term Liabilities [Abstract]
Indemnification liabilities	$ 10,787	$ 6,079
Deferred tax liability	3,489	4,907
Liabilities for uncertain tax positions	79,293	79,688	81,403	80,732
Other	306	2,443
Long term liabilities	$ 93,875	$ 93,117