Employee Benefit Plans (Components Of Net Periodic Benefit Cost Pension Plan) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Service cost	$ 90	$ 341	$ 269	$ 1,024
Interest cost	1,693	1,790	5,079	5,369
Expected return on plan assets	(2,432)	(2,474)	(7,295)	(7,421)
Amortization of net actuarial pension loss	643	480	1,930	1,440
Net periodic benefit cost (income)	$ (6)	$ 137	$ (17)	$ 412