Shareholders' Equity (Schedule Of Common Stock Outstanding Roll Forward) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued at beginning of year	34,492,484
Shares cancelled, shares	(670,732)
Shares issued at end of year	33,821,752
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Treasury shares issued at beginning of year	1,074,602
Shares repurchased, shares	670,732	432,117
Shares issued out of treasury, shares	(161,671)
Shares cancelled, shares	(670,732)
Total treasury shares at end of year	912,931
Total shares outstanding at end of year	32,908,821		33,417,882