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BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Short-term borrowings | $ 608,928 | $ 1,118,832
Long-term borrowings | 392,813 | 398,984
Total borrowings | $ 1,001,741 | $ 1,517,816
Weighted average rate on short-term borrowings | 2.65% | 2.58%
Weighted average rate on long-term borrowings | 3.34% | 3.16%
Weighted average rate | 2.92% | 2.73%
Advances from the FHLB |  |
Debt Instrument [Line Items] |  |
Short-term borrowings | $ 608,928 | $ 1,118,832
Long-term borrowings | $ 295,886 | $ 309,466
Weighted average rate on short-term borrowings | 2.65% | 2.58%
Weighted average rate on long-term borrowings | 2.36% | 2.17%
Subordinated borrowings |  |
Debt Instrument [Line Items] |  |
Long-term borrowings | $ 74,143 | $ 74,054
Weighted average rate on long-term borrowings | 7.00% | 7.00%
Trust I |  |
Debt Instrument [Line Items] |  |
Long-term borrowings | $ 15,464 | $ 15,464
Weighted average rate on long-term borrowings | 4.37% | 4.50%
Trust II |  |
Debt Instrument [Line Items] |  |
Long-term borrowings | $ 7,320 | $ 0
Weighted average rate on long-term borrowings | 4.11% | 0.00%

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