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ACQUISITIONS (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Nov. 12, 2021 | Dec. 31, 2020 | Dec. 31, 2018
--- | --- | --- | --- | ---
Assets |  |  |  |
Goodwill | $ 985,072 |  | $ 506,206 | $ 506,206
Blue Hills Bancorp, Inc. [Member] |  |  |  |
Assets |  |  |  |
Cash |  | $ 798,470 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Investments |  | 266 |  |
Loans |  | 4,908,949 |  |
Business Combination, Acquired Receivables, Estimated Uncollectible |  | (16,540) |  |
Premises and equipment |  | 66,825 |  |
Goodwill |  | 478,866 |  |
Core deposit intangible |  | 10,300 |  |
Other assets |  | 125,543 |  |
Total assets acquired |  | 6,372,679 |  |
Liabilities |  |  |  |
Deposits |  | 4,440,432 |  |
Borrowings |  | 576,088 |  |
Other liabilities |  | 46,432 |  |
Total liabilities assumed |  | 5,062,952 |  |
Purchase price |  | $ 1,309,727 |  |

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