Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS (Short-Term Borrowings) (Details)

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BORROWINGS (Short-Term Borrowings) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Debt Disclosure [Abstract]    
Securities sold under agreements to repurchase $ 121,262 $ 84,977
Other short-term borrowings 557,000 304,000
Total short-term borrowings 678,262 388,977
Maximum month-end outstanding balance 678,262 445,761
Average outstanding balance during the period $ 564,443 $ 379,783
Average interest rate during the period 0.47% 0.25%
Average interest rate at end of period 0.48% 0.27%
Other short-term borrowings:    
Federal funds purchased $ 0 $ 0
FHLB 541,000 304,000
Other lines of credit $ 16,000 $ 0