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Loss per Common Share (Details)	9 Months Ended		12 Months Ended
Loss per Common Share (Details)	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded anti-dilutive stock options and warrants	13,888,262	15,325,943	14,679,971	16,452,368
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded anti-dilutive stock options and warrants	2,380,644	2,294,714
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Excluded anti-dilutive stock options and warrants	150,423	0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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