OPERATING AND GEOGRAPHICAL SEGMENTS (Schedule of Physical Locations of Long-lived Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 206,285	$ 227,718
United States [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	92,466	104,912
Philippines [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	56,094	50,472
Germany [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	17,920	24,244
France [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	13,714	17,249
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	20,237	23,815
Rest of Europe [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 5,854	$ 7,026