Restructuring (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2015	Sep. 30, 2015	Sep. 30, 2014
Restructuring and Related Activities [Abstract]
Restructuring charges and lease termination costs		$ 16,373	$ 1,147
Impairment of lease related assets	$ 6,900	6,940	0
Restructuring costs		$ 9,433	$ 1,147

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Name:	us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration