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Income (Loss) Per Common Share (Computation Of Basic And Diluted Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic income (loss) per common share
Net income (loss)	$ 1,565	$ 1,325	$ (2,064)	$ 6,711
Net (income) loss allocated to participating securities	(15)	(22)	20	(126)
Net income (loss) allocated to common shareholders	$ 1,550	$ 1,303	$ (2,044)	$ 6,585
Basic weighted-average common shares outstanding	36,526	32,887	36,331	32,665
Basic income (loss) per common share	$ 0.04	$ 0.04	$ (0.06)	$ 0.20
Diluted income (loss) per common share
Net income (loss)	$ 1,565	$ 1,325	$ (2,064)	$ 6,711
Net (income) loss allocated to participating securities	(14)	(22)	20	(122)
Net income (loss) allocated to common shareholders	$ 1,551	$ 1,303	$ (2,044)	$ 6,589
Basic weighted-average common shares outstanding	36,526	32,887	36,331	32,665
Effect of dilutive stock options and awards	1,084	1,170		1,186
Diluted weighted-average common shares outstanding	37,610	34,057	36,331	33,851
Diluted income (loss) per common share	$ 0.04	$ 0.04	$ (0.06)	$ 0.19

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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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