Pension and Other Post Retirement Benefit Plans - Schedule of Changes in Benefit Obligation, and Plan Assets, Funded Status of the Plan, Assets and Liabilities Recognized in the Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation
Benefit obligation at beginning of year	$ 69,166	$ 68,769
Service Cost	131	161
Interest Cost	2,670	2,990
Actuarial Loss (Gain)	(5,597)	3,168
Benefits paid	(4,100)	(5,922)
Benefit obligation at end of year	62,270	69,166
Change in plan assets
Fair value of plan assets at beginning of year	62,865	62,078
Actual return on plan assets	10,610	6,141
Employer contributions	496	568
Benefits paid	(4,100)	(5,922)
End of Year	69,871	62,865
Funded Status at End of Year	7,601	(6,301)
Assets and Liabilities Recognized in the Balance Sheets:
Deferred Tax Asset	4,266	9,200
Assets	12,383
Liabilities	4,782	6,301
Amounts Recognized in Accumulated Other Comprehensive Income Not Yet Recognized as Components of Net Periodic Benefit Cost Consist of:
Accumulated Loss	(7,922)	(17,085)
Prior Service Credit	(28)	(41)
Total	$ (7,950)	$ (17,126)