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ACQUISITIONS - Summary of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |  | 1 Months Ended |
--- | --- | --- | ---
May 17, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: |  |  |
Goodwill |  | $ 554,703 | $ 518,325
SI Financial Group, Inc. |  |  |
Consideration Paid: |  |  |
Company common stock issued to SIFI common shareholders | $ 175,804 |  |
Fair value of SIFI stock options converted to Berkshire options | 907 |  |
Cash in lieu paid to SIFI shareholders | 14 |  |
Total consideration paid | 176,725 |  |
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: |  |  |
Cash and short-term investments | 110,774 |  |
Investment securities | 143,368 |  |
Loans held for sale | 1,005 |  |
Loans, net | 1,302,739 |  |
Premises and equipment | 16,947 |  |
Core deposit intangibles | 17,980 |  |
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets | 17,236 |  |
Goodwill and other intangibles | 0 |  |
Other assets | 60,307 |  |
Deposits | (1,334,848) |  |
Borrowings | (153,009) |  |
Other liabilities | (42,153) |  |
Total identifiable net assets | 140,346 |  |
Goodwill | 36,379 |  |
Fair Value Adjustments |  |  |
Cash and short-term investments | 0 |  |
Investment securities | (1,261) |  |
Loans held for sale | 0 |  |
Loans, net | (29,388) |  |
Premises and equipment | (2,092) |  |
Core deposit intangibles | 17,980 |  |
Deferred tax assets, net | 10,607 |  |
Goodwill and other intangibles | (16,063) |  |
Other assets | (341) |  |
Deposits | (7,733) |  |
Borrowings | 1,717 |  |
Other liabilities | (8,166) |  |
Total identifiable net assets | (34,740) |  |
Fair value adjustments, write-off in allowance for loan and lease losses |  | 15,600 |
Acquired credit impaired loans | 55,754 |  |
Impaired loans, fair value | 32,100 |  |
Fair value adjustments, impaired loans |  | 4,200 |
Financing receivable not considered impaired at time of acquisition | 1,290,000 |  |
Financing receivable not considered impaired at time of acquisition, fair value | $ 1,270,000 |  |
Fair value adjustments, financing receivable not considered impaired at time of acquisition |  | 6,700 |
Fair value adjustments, land |  | 1,100 |
Fair value adjustments, furniture, fixtures, and equipment |  | 1,000 |
Acquired finite-lived intangible assets, estimated useful life | 10 years |  |
Acquired deposits, estimated useful life | 11 months |  |
Fair value adjustments, borrowings |  | 800 |
Fair value adjustments, SI Capital Trust II |  | 900 |
Fair value adjustments, post-retirement liabilities |  | 7,600 |
Fair value adjustments, bank-owned life insurance liabilities |  | 800 |
Fair value adjustments, unfunded commitment reserve |  | $ 400 |
As Acquired | SI Financial Group, Inc. |  |  |
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: |  |  |
Cash and short-term investments | $ 110,774 |  |
Investment securities | 144,629 |  |
Loans held for sale | 1,005 |  |
Loans, net | 1,332,127 |  |
Premises and equipment | 19,039 |  |
Core deposit intangibles | 0 |  |
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets | 6,629 |  |
Goodwill and other intangibles | 16,063 |  |
Other assets | 60,648 |  |
Deposits | (1,327,115) |  |
Borrowings | (154,726) |  |
Other liabilities | (33,987) |  |
Total identifiable net assets | $ 175,086 |  |

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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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