Annual report pursuant to Section 13 and 15(d)

Supplemental Retirement Plan and Related Post Retirement Benefits (Details 4)

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Supplemental Retirement Plan and Related Post Retirement Benefits (Details 4) (SERP Medical [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
SERP Medical [Member]
     
Net periodic cost recognized for defined benefit plans/Accumulated Postretirement Benefit Obligation      
Beginning of the Year - January 1 $ 568 $ 511  
Service Cost 2 2 4
Interest Cost 24 27 50
Actuarial Loss 42 68  
Benefits Paid (43) (40)  
End of the Year - December 31 $ 593 $ 568 $ 511