Employee Benefit Plans (Amounts included in accumulated other comprehensive loss, net of tax, expected to be recognized in net periodic benefit cost during the next fiscal year) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	$ 0
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	530
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	99
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 7