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Cash and Cash Equivalents
6 Months Ended
Jun. 30, 2012
Significant Accounting Policies And Recent Accounting Pronouncements [Abstract]  
Cash and Cash Equivalents

 

3.  Cash and Cash Equivalents

 

For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits with other banks, banker’s acceptances, commercial paper, securities purchased under agreement to resell, federal funds sold, and securities with maturities of less than 90 days at acquisition.