Segment Information Total Assets (Details) (USD $) In Thousands, unless otherwise specified																9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 UNITED STATES	Dec. 31, 2013 UNITED STATES	Sep. 30, 2014 North America [Member]		Dec. 31, 2013 North America [Member]		Sep. 30, 2014 EMEA [Member]	Dec. 31, 2013 EMEA [Member]	Sep. 30, 2014 ROW [Member]		Dec. 31, 2013 ROW [Member]		Sep. 30, 2014 Korea [Member]	Sep. 30, 2014 Assets, Total [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 2,072,165	$ 2,042,010	$ 940,800	$ 1,231,300	$ 978,814	[1]	$ 1,267,158	[1]	$ 543,257	$ 616,126	$ 550,094	[1]	$ 158,726	[1]	$ 395,000
Concentration of risk, percentage																10.00%

[1] (1)North America contains assets from the United States of $940.8 million and $1,231.3 million as of September 30, 2014 and December 31, 2013, respectively. Rest of World contains assets from the Republic of Korea, including those assets acquired as a part of our acquisition of Ticket Monster described in Note 2 "Business Combinations," of $395.0 million as of September 30, 2014. There were no other individual countries that represented more than 10% of consolidated total assets as of September 30, 2014 and December 31, 2013, respectively.