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Loss Per Common Share (Computation Of Basic And Diluted (Loss) Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Basic (loss) income per common share
Net loss	$ (297)	$ (3,855)
Net loss allocated to participating securities	2	38
Net loss allocated to common shareholders	$ (295)	$ (3,817)
Basic weighted-average common shares outstanding	36,778	36,146
Basic loss per common share	$ (0.01)	$ (0.11)
Diluted (loss) income per common share
Net loss	$ (297)	$ (3,855)
Net loss allocated to participating securities	2	38
Net loss allocated to common shareholders	$ (295)	$ (3,817)
Basic weighted-average common shares outstanding	36,778	36,146
Diluted weighted-average common shares outstanding	36,778	36,146
Diluted loss per common share	$ (0.01)	$ (0.11)

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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