Operating Segments and Geographic Information Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Total current deferred tax assets	$ 4,587		$ 4,440
Income tax receivable	14,426		10,630
Other receivables	17,295		11,942
Prepaid expenses and other current assets	37,923		29,175
Total current assets	870,734		640,077
Property and equipment, net	83,316		86,971
Intangible assets, net	85,747		72,132
Goodwill	2,479		2,690
Total non-current deferred tax assets	18,614		19,628
Other assets	40,983		53,661
Total assets	1,101,873		875,159
Americas [Member]
Segment Reporting Information [Line Items]
Total current assets	184,547		139,855
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total current assets	219,988		177,343
Japan [Member]
Segment Reporting Information [Line Items]
Total current assets	51,667		51,155
Europe [Member]
Segment Reporting Information [Line Items]
Total current assets	178,500		137,701
Total Segment Current Assets [Member]
Segment Reporting Information [Line Items]
Total current assets	634,702		506,054
Other businesses [Member]
Segment Reporting Information [Line Items]
Total current assets	16,274		14,093
Significant Reconciling Items [Member]
Segment Reporting Information [Line Items]
Total current assets	$ 145,527	[1]	$ 63,743	[1]

[1] Corporate assets primarily consist of cash and equivalents which increased predominately due to net cash proceeds from our investment with Blackstone. See Note 13 - Series A Preferred Stock for further details regarding the preferred share offering.