Pension Plans and Other Postretirement Benefits (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Pension Plans and Other Postretirement Benefits (Textual) [Abstract]
Health reimbursement accounts funding	$ 63	$ 35
Other Postretirement Benefit Plan, Defined Benefit [Member]
Pension Plans and Other Postretirement Benefits (Textual) [Abstract]
Defined Benefit Plan, Other Changes	$ 314	$ 33

Changes in the defined benefit obligation, not otherwise separately disclosed in the financial statements.

No definition available.

Name:	us-gaap_DefinedBenefitPlanOtherChanges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration