Pension and Other Post Retirement Benefit Plans - Narrative (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Mar. 01, 2005	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Percentage of employees covered by plan		24.00%
Minimum Participant Attained Age	55 years
Requisite Service Period	10 years
Accumulated Benefit Obligation		$ 4,782,000	$ 69,139
Defined Benefit Plan Disclosure [Line Items]
Percentage of the Premiums Paid By Plan Participants		100.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Other Postretirement Benefit, Participant Attained Age		55 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Other Postretirement Benefit, Participant Attained Age		65 years