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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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted average number of shares outstanding - basic	33,800	29,983	32,159	29,854
Effect of dilutive stock awards	2,364	1,003	1,885
Weighted average number of shares outstanding - diluted	36,164	30,986	34,044	29,854
Basic net income (loss) per share	$ 0.13	$ 0.04	$ 0.37	$ (0.05)
Diluted net income (loss) per share	$ 0.13	$ 0.04	$ 0.35	$ (0.05)

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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