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ACQUISITIONS - Estimated Fair Value of Assets Acquired and Liabilities assumed (Details) - USD ($) $ in Thousands |  |  |  | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2022 | Aug. 02, 2021 | Jul. 01, 2021 | Jun. 30, 2022 | Dec. 31, 2021 | May 13, 2022 | Jun. 30, 2021
Consideration : |  |  |  |  |  |  |
Cash |  |  |  | $ 84,643 | $ 29,870 |  |
Contingent consideration |  |  |  | 0 | 2,900 |  |
Total net consideration |  |  |  | 84,643 | 32,770 |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 84,988 | 541 |  |
Investment securities |  |  |  | 11,305 | 0 |  |
Loans, net of allowance for credit losses on PCD loans |  |  |  | 436,948 | 0 |  |
Premises and equipment, net |  |  |  | 12,317 | 760 |  |
Accrued interest and fees receivable |  |  |  | 884 | 0 |  |
Other assets |  |  |  | 21,984 | 579 |  |
Deposits |  |  |  | (522,295) | 0 |  |
Other liabilities |  |  |  | (5,039) | (1,072) |  |
Other Federal Home Loan Bank borrowings |  |  |  | (17,616) | 0 |  |
Total identifiable assets, net |  |  |  | 33,910 | 27,145 |  |
Goodwill |  |  |  | 849,813 | 799,109 |  | $ 794,892
Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  | 7,970 | 0 |  |
Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  | 2,464 | 26,337 |  |
Thomas Gregory Associates [Member] |  |  |  |  |  |  |
Consideration : |  |  |  |  |  |  |
Cash |  |  |  |  | 11,620 |  |
Contingent consideration |  | $ 1,500 |  |  | 1,500 |  |
Total net consideration | $ 2,500 |  |  |  | 13,120 |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 0 |  |
Investment securities |  |  |  |  | 0 |  |
Loans, net of allowance for credit losses on PCD loans |  |  |  |  | 0 |  |
Premises and equipment, net |  |  |  |  | 279 |  |
Accrued interest and fees receivable |  |  |  |  | 0 |  |
Other assets |  |  |  |  | 0 |  |
Other intangibles | $ 2,500 |  |  |  |  |  |
Deposits |  |  |  |  | 0 |  |
Other liabilities |  |  |  |  | (229) |  |
Other Federal Home Loan Bank borrowings |  |  |  |  | 0 |  |
Total identifiable assets, net |  |  |  |  | 10,950 |  |
Goodwill |  | $ 2,200 |  |  | 2,170 |  |
Thomas Gregory Associates [Member] | Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  |  | 0 |  |
Thomas Gregory Associates [Member] | Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  |  | 10,900 |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] |  |  |  |  |  |  |
Consideration : |  |  |  |  |  |  |
Cash |  |  |  |  | 15,350 |  |
Contingent consideration |  |  | $ 1,400 |  | 1,400 |  |
Total net consideration |  |  |  |  | 16,750 |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 541 |  |
Investment securities |  |  |  |  | 0 |  |
Loans, net of allowance for credit losses on PCD loans |  |  |  |  | 0 |  |
Premises and equipment, net |  |  |  |  | 282 |  |
Accrued interest and fees receivable |  |  |  |  | 0 |  |
Other assets |  |  |  |  | 579 |  |
Deposits |  |  |  |  | 0 |  |
Other liabilities |  |  |  |  | (669) |  |
Other Federal Home Loan Bank borrowings |  |  |  |  | 0 |  |
Total identifiable assets, net |  |  |  |  | 14,733 |  |
Goodwill |  |  | $ 2,000 |  | 2,017 |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  |  | 0 |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  |  | 14,000 |  |
NuVantage Insurance Corporation [Member] |  |  |  |  |  |  |
Consideration : |  |  |  |  |  |  |
Cash |  |  |  |  | 2,900 |  |
Contingent consideration |  |  |  |  | 0 |  |
Total net consideration |  |  |  |  | 2,900 |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 0 |  |
Investment securities |  |  |  |  | 0 |  |
Loans, net of allowance for credit losses on PCD loans |  |  |  |  | 0 |  |
Premises and equipment, net |  |  |  |  | 199 |  |
Accrued interest and fees receivable |  |  |  |  | 0 |  |
Other assets |  |  |  |  | 0 |  |
Deposits |  |  |  |  | 0 |  |
Other liabilities |  |  |  |  | (174) |  |
Other Federal Home Loan Bank borrowings |  |  |  |  | 0 |  |
Total identifiable assets, net |  |  |  |  | 1,462 |  |
Goodwill |  |  |  |  | 1,438 |  |
NuVantage Insurance Corporation [Member] | Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  |  | 0 |  |
NuVantage Insurance Corporation [Member] | Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  |  | 1,437 |  |
Elmira Savings Bank [Member] |  |  |  |  |  |  |
Consideration : |  |  |  |  |  |  |
Cash |  |  |  | 82,179 |  |  |
Contingent consideration |  |  |  | 0 |  |  |
Total net consideration |  |  |  | 82,179 |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 84,988 |  |  |
Investment securities |  |  |  | 11,305 |  | $ 11,300 |
Loans, net of allowance for credit losses on PCD loans |  |  |  | 436,948 |  | 437,000 |
Premises and equipment, net |  |  |  | 12,317 |  |  |
Accrued interest and fees receivable |  |  |  | 884 |  |  |
Other assets |  |  |  | 21,984 |  |  |
Deposits |  |  |  | (522,295) |  | (522,300) |
Other liabilities |  |  |  | (5,039) |  |  |
Other Federal Home Loan Bank borrowings |  |  |  | (17,616) |  |  |
Total identifiable assets, net |  |  |  | 31,446 |  |  |
Goodwill |  |  |  | 50,733 |  | 50,700 |
Elmira Savings Bank [Member] | Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  | 7,970 |  | $ (8,000) |
Elmira Savings Bank [Member] | Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  | 0 |  |  |
Other [Member] |  |  |  |  |  |  |
Consideration : |  |  |  |  |  |  |
Cash |  |  |  | 2,464 |  |  |
Contingent consideration |  |  |  | 0 |  |  |
Total net consideration |  |  |  | 2,464 |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 0 |  |  |
Investment securities |  |  |  | 0 |  |  |
Loans, net of allowance for credit losses on PCD loans |  |  |  | 0 |  |  |
Premises and equipment, net |  |  |  | 0 |  |  |
Accrued interest and fees receivable |  |  |  | 0 |  |  |
Other assets |  |  |  | 0 |  |  |
Deposits |  |  |  | 0 |  |  |
Other liabilities |  |  |  | 0 |  |  |
Other Federal Home Loan Bank borrowings |  |  |  | 0 |  |  |
Total identifiable assets, net |  |  |  | 2,464 |  |  |
Goodwill |  |  |  | 0 |  |  |
Other [Member] | Core deposit intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Deposits |  |  |  | 0 |  |  |
Other [Member] | Other intangibles |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Other intangibles |  |  |  | 2,464 |  |  |
One Group Acquisitions |  |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |
Goodwill |  |  |  | $ 50,733 | $ 5,625 |  |

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