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Earnings/ (Loss) Per Share - Computation of Diluted Earnings Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Anti-dilutive common stock options, Number of Shares	309,342	351,000
Maximum [Member]
Anti-dilutive common stock options, Range of Exercise Price Per Share	0.55	7.50
Minimum [Member]
Anti-dilutive common stock options, Range of Exercise Price Per Share	7.50	0.55

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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