Annual report pursuant to Section 13 and 15(d)

Note 8 - Federal Funds Purchased (Details Textual)

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Note 8 - Federal Funds Purchased (Details Textual) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Federal Funds Purchased $ 288,725 $ 301,797
Line of Credit Facility, Maximum Borrowing Capacity 562,000 $ 468,000
Long-term Line of Credit, Total $ 0  
Federal Funds Purchased [Member] | Minimum [Member]    
Debt Instrument, Interest Rate, Stated Percentage 2.50% 1.55%
Federal Funds Purchased [Member] | Maximum [Member]    
Debt Instrument, Interest Rate, Stated Percentage 2.65% 1.70%