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ACQUISITIONS - Estimated FV of Assets Acquired & Liab Assumed(Details) - USD ($) $ in Thousands | Sep. 30, 2017 | May 12, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Assets |  |  |
Goodwill | $ 231,806 |  | $ 221,526
Island Bancorp, Inc. [Member] |  |  |
Assets |  |  |
Cash |  | $ 11,137 |
Loans |  | 155,551 |
Premises and equipment |  | 5,828 |
Goodwill |  | 10,280 |
Core deposit intangible |  | 2,964 |
Other assets |  | 4,629 |
Total assets acquired |  | 190,389 |
Liabilities |  |  |
Deposits |  | 159,580 |
Borrowings |  | 2,475 |
Other liabilities |  | 18 |
Total liabilities assumed |  | 162,073 |
Purchase price |  | $ 28,316 |

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