Segment Information - Long-lived Assets by Geographical Areas (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 160,135	$ 138,704
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 11,261	$ 11,171

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant