Other Employee Benefit Plans Other Employee Benefit Plans (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service costs	$ 254	$ 267	$ 205
Interest costs	883	936	1,047
Net amortization and deferral	1,111	1,205	903
Settlement loss	3,305	0	0
Net periodic pension costs	5,553	2,408	2,155
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]
Net loss	107
Net prior service cost	160
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 267