Subsequent Events - Narrative (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended	11 Months Ended	1 Months Ended
Jul. 14, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Oct. 30, 2014 Subsequent Event [Member]
Subsequent Event [Line Items]
Repurchase of common stock (in shares)	1,950,296	7,970,353		9,096,060	1,988,673
Repurchase of common stock	$ 72,300	$ 325,609	$ 157,880		$ 47,000

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

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