Earnings Per Share (Schedule Of Reconciliation Of Basic And Diluted Shares Of Common Stock Outstanding Used In Calculation Of Earnings Per Share) (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Weighted average number of shares outstanding - basic	29,739	30,017	29,939	30,015
Effect of dilutive stock awards	427		223
Weighted average number of shares outstanding - diluted	30,166	30,017	30,162	30,015
Basic net income (loss) per share	$ 0.14	$ (0.05)	$ 0.13	$ (0.22)
Diluted net income (loss) per share	$ 0.14	$ (0.05)	$ 0.12	$ (0.22)