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Note 3 - Cash and Cash Equivalents
12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Cash and Cash Equivalents Disclosure [Text Block]
3
.    Cash and Cash Equivalents
 
 
     The Company manages its cash and cash equivalents, which consist of cash on hand, amounts due from banks, federal funds sold, and short-term investments with original maturity of
three
months or less, based upon the Company’s operating, investment, and financing activities. For the purpose of reporting cash flows, these same accounts are included in cash and cash equivalents.
 
 
    
The Company is required to maintain reserves with the Federal Reserve Bank. Reserve requirements are based on a percentage of deposit liabilities. The average reserve balances required were
$7.5
million for
2017
and
$1.9
million for
2016
. The average excess balance with Federal Reserve Bank was
$359.5
million in
2017
and
$338.5
million in
2016
.   At
December 31, 2017,
the Bancorp had
$4.5
million on deposit in a cash margin account that serves as collateral for the Bancorp’s interest rate swaps.