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BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Short-term borrowings
Carrying Value	$ 666,306	$ 649,498
Weighted Average Rate	2.13%	1.43%
Long-term borrowings
Carrying Value	$ 115,906	$ 180,223
Weighted Average Rate	3.21%	2.47%
Total borrowings	$ 782,212	$ 829,721
Weighted Average Rate	2.29%	1.66%
Advances from the FHLB
Short-term borrowings
Carrying Value	$ 628,855	$ 608,792
Weighted Average Rate	2.19%	1.49%
Long-term borrowings
Carrying Value	$ 72,918	$ 137,190
Weighted Average Rate	1.80%	1.72%
Other borrowings
Short-term borrowings
Carrying Value	$ 37,451	$ 40,706
Weighted Average Rate	1.04%	0.59%
Subordinated borrowings
Long-term borrowings
Carrying Value	$ 37,988	$ 38,033
Weighted Average Rate	5.54%	4.88%
Junior subordinated borrowings
Long-term borrowings
Carrying Value	$ 5,000	$ 5,000
Weighted Average Rate	5.88%	4.89%

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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