Segment Information (Long-Lived Assets by Geographic Region) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total long-lived assets	$ 78,075	$ 71,908
United States [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	39,347	34,422
Israel [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	20,551	22,580
Australia [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	9,058	9,827
Netherlands [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	7,696	3,540
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	$ 1,423	$ 1,539