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Commitments and contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Schedule Of Fair Value Off Balance Sheet Risks Text Block
    
(In thousands) December 31, 2014 December 31, 2013
Commitments to extend credit:    
 Credit card lines$ 4,450,284$ 4,594,676
 Commercial lines of credit  2,415,843  2,569,377
 Other unused credit commitments   269,225  326,874
Commercial letters of credit  2,820  3,059
Standby letters of credit  46,362  78,948
Commitments to originate or fund mortgage loans  25,919  47,722