Stock Compensation and Share Repurchase Plan (Summary Of Stock Option Activity) (Details) - $ / shares shares in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, balance, beginning of period (in shares)	219	472	807
Options outstanding, exercised (in shares)	(71)	(219)	(83)
Options outstanding, forfeited/expired (in shares)	(50)	(34)	(252)
Options outstanding, balance, end of period (in shares)	98	219	472
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted-avg exercise price, balance beginning of period (in usd per share)	$ 15.74	$ 14.58	$ 16.80
Weighted-avg exercise price, exercised (in usd per share)	13.59	11.95	11.06
Weighted-avg exercise price, forfeited/expired (in usd per share)	26.12	24.19	22.88
Weighted-avg exercise price, balance, end of period (in usd per share)	$ 11.99	$ 15.74	$ 14.58
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, end of year, options outstanding (in shares)	98	211	437
Options exercisable, end of year, weighted avg exercise price (in usd per share)	$ 11.99	$ 15.88	$ 14.78

No definition available.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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