Annual report pursuant to Section 13 and 15(d)

FEDERAL FUNDS PURCHASED (Additional Information) (Details)

v3.6.0.2
FEDERAL FUNDS PURCHASED (Additional Information) (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Federal Funds Purchased [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.00%  
Line of Credit, Current $ 378.0 $ 180.0
Federal Funds Purchased [Member]    
Federal Funds Purchased [Line Items]    
Short-term Debt, Total $ 355.9 $ 352.4
Federal Funds Purchased [Member] | Maximum [Member]    
Federal Funds Purchased [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 0.80% 0.75%
Federal Funds Purchased [Member] | Minimum [Member]    
Federal Funds Purchased [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 0.75% 0.55%