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Employee Benefit Plans (Components of the Net Periodic Pension Plan Cost) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Expected long-term return on assets 7.75%  
Pension [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost $ 0 $ 0
Interest cost 1,380 1,430
Expected return on assets (2,211) (2,225)
Amortization of transition asset (39) (39)
Amortization of recognized loss 379 279
Amortization of prior service cost 12 12
Net pension (income)/expense in employee benefitws (479) (543)
Discount rate for benefit obligations 4.00% 5.00%
Discount rate for net pension costs 5.00% 6.00%
Expected long-term return on assets 7.75% 7.75%
Rate of compensation increase 3.00% 4.00%
SERP [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 114 322
Interest cost 245 233
Expected return on assets 0 0
Amortization of transition asset 0 0
Amortization of recognized loss 15 20
Amortization of prior service cost 123 123
Net pension (income)/expense in employee benefitws $ 497 $ 698
Discount rate for benefit obligations 5.25% 5.25%
Discount rate for net pension costs 0.00% 0.00%
Expected long-term return on assets 0.00% 0.00%
Rate of compensation increase 3.00% 3.00%