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Net Loss Per Share (Details Textual)	12 Months Ended
Net Loss Per Share (Details Textual)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option [Member]
Net Loss Per Share (Textual)
Antidilutive securities excluded from computation of earnings per share	24,000	1,600,000	1,700,000
Warrant [Member]
Net Loss Per Share (Textual)
Antidilutive securities excluded from computation of earnings per share	300,000	800,000	4,700,000
Convertible Preferred Stock [Member]
Net Loss Per Share (Textual)
Antidilutive securities excluded from computation of earnings per share	11,000	11,000	52,000

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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