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ACQUISITIONS (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | May 12, 2017 | Dec. 31, 2016 | Nov. 10, 2016 | Dec. 31, 2015
--- | --- | --- | --- | --- | ---
Assets |  |  |  |  |
Goodwill | $ 231,806 |  | $ 221,526 |  | $ 201,083
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 |  |  |
New England Bancorp, Inc. [Member] |  |  |  |  |
Assets |  |  |  |  |
Cash |  |  |  | $ 9,679 |
Loans |  |  |  | 225,731 |
Premises and equipment |  |  |  | 201 |
Goodwill |  |  |  | 20,443 |
Core deposit intangible |  |  |  | 670 |
Other assets |  |  |  | 19,197 |
Total assets acquired |  |  |  | 275,921 |
Liabilities |  |  |  |  |
Deposits |  |  |  | 175,686 |
Borrowings |  |  |  | 51,150 |
Other liabilities |  |  |  | 7,344 |
Total liabilities assumed |  |  |  | 234,180 |
Purchase price |  |  |  | $ 41,741 |

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