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v3.23.1

DEPOSITS (Tables) | 3 Months Ended
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Mar. 31, 2023
Deposits [Abstract] |
Schedule of Time Deposits | A summary of time deposits is as follows:
(In thousands) |  | March 31, 2023 |  | December 31, 2022
Time less than $100,000 |  | $ | 621,894 |  |  | $ | 549,265 |
Time $100,000 through $250,000 |  | 877,486 |  |  | 642,600 |
Time more than $250,000 |  | 613,266 |  |  | 441,842 |
Total time deposits |  | $ | 2,112,646 |  |  | $ | 1,633,707 |

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- Definition Tabular disclosure of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. + References No definition available. + Details
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Namespace Prefix: | bhlb_
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Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DepositsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration