BORROWINGS (Short-Term Borrowings) (Details) - USD ($) $ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
---|---|---|
Short-term Debt [Line Items] | ||
Other Short-term Borrowings | $ 80,000 | $ 180,000 |
Federal Home Loan Bank of Indianapolis Notes, 1.67%, Due June 27, 2018 | ||
Short-term Debt [Line Items] | ||
Other Short-term Borrowings | 80,000 | 0 |
Federal Home Loan Bank of Indianapolis Notes, 0.89%, Due June 28, 2017 | ||
Short-term Debt [Line Items] | ||
Other Short-term Borrowings | $ 0 | $ 180,000 |