Equity-Based Compensation (Details Of Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee equity-based compensation expense	$ 1,029	$ 1,051	$ 2,101	$ 1,998
Actual tax benefit realized for tax deductions from equity-based plans	48	0	71	0
Director deferred compensation expense (income)	(940)	184	350	427
Performance shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee equity-based compensation expense	891	892	1,753	1,707
Restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee equity-based compensation expense	$ 138	$ 159	$ 348	$ 291