Segment Information (Long-Lived Assets by Geographic Region) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total long-lived assets	$ 128,606	$ 131,812
United States [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	95,171	96,362
Israel [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	15,173	16,393
Australia [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	8,556	8,290
Netherlands [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	7,467	8,285
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	$ 2,239	$ 2,482