Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Name:	us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Recent and New Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock based compensation tax withholding		$ 0	$ 3,825
New Accounting Pronouncement, Early Adoption [Member] \| 2011 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock based compensation tax withholding	$ 3,800