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Short-Term Borrowings
12 Months Ended
Dec. 31, 2015
Short Term Borrowings [Abstract]  
Short-Term Borrowings [Text Block]

Note 9Short-term Borrowings

Short-term borrowings include federal funds purchased and securities sold under agreements to repurchase, trading liabilities, and other borrowed funds.

Federal funds purchased and securities sold under agreements to repurchase generally have maturities of less than 90 days. Trading liabilities, which represent short positions in securities, are generally held for less than 90 days. Other short-term borrowings have original maturities of one year or less. On December 31, 2015, fixed income trading securities with a fair value of $122.8 million were pledged to secure other short-term borrowings.

The detail of these borrowings for the years 2015, 2014 and 2013 is presented in the following table:
(Dollars in thousands)Federal Funds Purchased Securities Sold Under Agreements to RepurchaseTrading LiabilitiesOther Short-term Borrowings
2015
Average balance$705,054$370,097$733,189$164,951
Year-end balance464,166338,133566,019137,861
Maximum month-end outstanding1,228,125524,191866,005339,468
Average rate for the year0.26%0.06%2.18%0.67%
Average rate at year-end0.500.092.410.82
2014
Average balance$1,101,910$447,801$633,867$531,984
Year-end balance1,037,052562,214594,314157,218
Maximum month-end outstanding1,247,295562,214718,7671,829,141
Average rate for the year0.25%0.08%2.43%0.30%
Average rate at year-end0.250.062.600.56
2013
Average balance$1,263,792$487,923$665,095$299,288
Year-end balance1,042,633442,789368,348181,146
Maximum month-end outstanding1,429,319618,643895,8441,057,412
Average rate for the year0.25%0.14%2.05%0.27%
Average rate at year-end0.250.102.460.43