Pension and Postretirement Benefits (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2014
Pension Plans | Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Amount expected to contribute in funded pension plans	$ 1,400,000
Pension Contributions	217,000
Pension Plans | Unfunded Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Amount expected to contribute in unfunded pension plans	941,000
Pension Contributions	201,000
US Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Amount expected to contribute in postretirement benefit plans	950,000
Pension and Other Postretirement Benefit Contributions	$ 0