Loss Per Share (Details) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	24,285	18,538
Options, Warrants And Stock-Based Compensation [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	8,148	2,895
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	11,908	11,414
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	4,229	4,229