Pension Plans and Other Postretirement Benefits (Details Textual) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Pension Plans and Other Postretirement Benefits (Textual) [Abstract]
Health reimbursement accounts funding	$ 132	$ 90
Other Postretirement Benefit Plan, Defined Benefit [Member]
Pension Plans and Other Postretirement Benefits (Textual) [Abstract]
Defined Benefit Plan, Other Changes	$ 556	$ 186