Pension Plan (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Pension Plan (Details) [Line Items]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	$ 1,500,000
Defined Benefit Pension Plan, Liabilities, Noncurrent	3,000,000
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	1,400,000
Defined Benefit Plan, Expected Future Benefit Payments, Remainder of Fiscal Year	600,000
Increase (Decrease) in Deferred Pension Costs	599,000	(65,000)
Defined Benefit Plan, Contributions by Employer	778,000
Two Thousand Nine Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs	285,000
Two Thousand Ten Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs	559,000
Two Thousand Twelve Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs	$ 871,000