Net Loss Per Share (Schedule Of Anti-Dilutive Securities Excluded From Computation Of Diluted Earnings Per Share) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common shares excluded from the computation of diluted earnings per share	3,578,867	3,382,780
Stock Options And Stock Appreciation Rights [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common shares excluded from the computation of diluted earnings per share	706,494	487,146
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common shares excluded from the computation of diluted earnings per share	752,008	697,751
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common shares excluded from the computation of diluted earnings per share	2,120,365	2,197,883