Stockholders' Equity (Shares Reserved for Issuance) (Details)	Jun. 30, 2013
Class of Stock [Line Items]
Shares reserved for issuance	15,643,000
Employee Stock Purchase Plan
Class of Stock [Line Items]
Shares reserved for issuance	1,967,000
Stock Options
Class of Stock [Line Items]
Shares reserved for issuance	13,676,000

Aggregate number of common shares reserved for future issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant