Pension and Other Post Retirement Benefit Plans - Schedule of Maturities of Plan's Debt Securities (In Years) (Details) (Debt securities)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Minimum
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities	2 days	31 days
Maximum
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities	9 years 7 months 10 days	9 years 0 months 29 days
Weighted Average
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities	4 years 7 months 18 days	4 years 11 months 19 days