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Bank Call Loans (Tables)
 12 Months Ended
Dec. 31, 2012
Summary of Bank Call Loans

Expressed in thousands of dollars, except percentages.

 

     2012     2011  

Year-end balance

    $ 128,300      $ 27,500   

Weighted interest rate (at end of year)

      1.23 %      1.25 % 

Maximum balance (at any month end)

    $ 171,400      $ 178,600   

Average amount outstanding (during the year)

    $ 73,227      $ 92,657   

Average interest rate (during the year)

      1.27 %      1.25 %