Annual report pursuant to Section 13 and 15(d)

BORROWINGS (Short-Term Borrowings) (Details)

v3.8.0.1
BORROWINGS (Short-Term Borrowings) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Debt Disclosure [Abstract]    
Securities sold under agreements to repurchase $ 49,152 $ 59,281
Other short-term borrowings 745,000 517,500
Total short-term borrowings 794,152 576,781
Maximum month-end outstanding balance 794,152 678,262
Average outstanding balance during the period $ 602,553 $ 590,074
Average interest rate 1.00% 0.49%
Average interest rate at end of period 1.32% 0.60%