Segment and Geographical Information - Schedule of Long Lived Assets by Geographical Areas (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total consolidated assets	$ 386,282	$ 365,630
Reportable Geographical Components [Member] | United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total consolidated assets	223,667	196,383
Reportable Geographical Components [Member] | International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total consolidated assets	$ 162,615	$ 169,247