Commitments and Contingencies (Leases) (Details Textuals 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Leases, Operating [Abstract]
Description of lease terms (in years)	11 years
Expected future receipts under sublease agreements	$ 12.4

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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