Employee Benefit Plans Future Benefit Payments Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payments, Next Twelve Months	$ 1,800
Expected Future Benefit Payments, Year Two	1,850
Expected Future Benefit Payments, Year Three	1,890
Expected Future Benefit Payments, Year Four	1,960
Expected Future Benefit Payments, Year Five	2,060
Expected Future Benefit Payments, Five Fiscal Years Thereafter	11,630
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payments, Next Twelve Months	90
Expected Future Benefit Payments, Year Two	90
Expected Future Benefit Payments, Year Three	80
Expected Future Benefit Payments, Year Four	80
Expected Future Benefit Payments, Year Five	60
Expected Future Benefit Payments, Five Fiscal Years Thereafter	$ 250