Stockholders' Equity (Stock-Based Compensation) (Narrative) (Details)	30 Months Ended	96 Months Ended
Jan. 01, 2007	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Full exercise period		10 years
Granted after June 30, 2004 and before January 1, 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period after employment termination	1 year

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration