Employee Retirement Plans (Components Of Net Periodic Pension And Other Post-Retirement Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Retirement Plans [Abstract]
Service cost		$ 41	$ 80
Interest cost	110	141	171
Amortization of unrecognized prior service cost	14	15	110
Gain amortization		(218)
Net periodic pension cost (income)	$ 124	$ (21)	$ 361
Discount rate	3.50%	4.50%	5.50%