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Components of Other Comprehensive Income/(Loss)
12 Months Ended
Dec. 31, 2012
Components Of Other Comprehensive Income/(Loss) [Abstract]  
Components of Other Comprehensive Income/(Loss) [Text Block]

Note 15Components of Other Comprehensive Income/(loss)

Following is detail of "Accumulated other comprehensive income/(loss)" as presented in the Consolidated Statements of Condition: 
          Accumulated Other Comprehensive Income/(Loss)
            
   Before-Tax AmountTax Benefit/ (Expense)   
(Dollars in thousands)       
December 31, 2009$ 58,878 $ (21,256)  $ (114,209) 
Other comprehensive income:          
 Unrealized market adjustments on securities available-for-sale  (31,297)   12,175    (19,122) 
 Adjustment for net (gain)/loss on securities available-for-sale included in Net income/(loss)  (715)   278    (437) 
 Pension and postretirement plans:          
  Net actuarial gain/(loss) arising during the period  (5,439)   2,014    (3,425) 
  Amortization of prior service cost, transition asset/obligation, and net actuarial gain/(loss) included in net periodic benefit cost  15,121   (5,474)    9,647 
December 31, 2010  (22,330)   8,993    (127,546) 
Other comprehensive income:          
 Unrealized market adjustments on securities available-for-sale  36,294   (14,119)    22,175 
 Adjustment for net (gain)/loss on securities available-for-sale included in Net income/(loss)  (773)   301    (472) 
 Pension and postretirement plans:          
  Net actuarial gain/(loss) arising during the period  (60,953)   23,337    (37,616) 
  Amortization of prior service cost, transition asset/obligation, and net actuarial gain/(loss) included in net periodic benefit cost  21,556   (8,253)    13,303 
December 31, 2011  (3,876)   1,266    (130,156) 
Other comprehensive income:          
 Unrealized market adjustments on securities available-for-sale  (19,016)   7,397    (11,619) 
 Adjustment for net (gain)/loss on securities available-for-sale included in Net income/(loss)  (328)   128    (200) 
 Pension and postretirement plans:          
  Net actuarial gain/(loss) arising during the period  (45,110)   17,906    (27,204) 
  Amortization of prior service cost, transition asset/obligation, and net actuarial gain/(loss) included in net periodic benefit cost  37,867   (15,031)    22,836 
December 31, 2012$ (26,587) $ 10,400  $ (146,343) 
Certain previously reported amounts have been reclassified to agree with current presentation.