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Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2012
Other Comprehensive Income Loss [Abstract]  
Schedule Of Other Comprehensive Income Loss [Table Text Block]
    Pre-tax Tax benefit Net of
(In thousands)  amount (expense) tax amount
2012:       
Unrealized net holding gain on all other securities  2,188 (809) 1,379
Reclassification adjustment for net gain on securities recognized in net earnings  (679) 252 (427)
 Other comprehensive income $1,509 (557) 952
         
2011:       
Unrealized net holding loss on other-than-temporarily impaired securities        
 due to factors other than credit $(130) 48 (82)
Unrealized net holding gain on all other securities  11,187 (4,128) 7,059
Reclassification adjustment for net gain on securities recognized in net earnings  (878) 324 (554)
 Other comprehensive income $10,179 (3,756) 6,423
         
2010:       
Unrealized net holding loss on other-than-temporarily impaired securities        
 due to factors other than credit $(210) 77 (133)
Unrealized net holding loss on all other securities  (2,032) 751 (1,281)
Reclassification adjustment for net gain on securities recognized in net earnings  (1,423) 525 (898)
 Other comprehensive loss $(3,665) 1,353 (2,312)